Mercurial > embed
changeset 67:01ba3c658576
fmt: upgrade to 5.1.0, closes #883 @20m
author | David Demelier <markand@malikania.fr> |
---|---|
date | Fri, 13 Jul 2018 13:15:12 +0200 |
parents | 177c7e511bcb |
children | 1a32b6d17c8e |
files | VERSION.fmt.txt fmt/CMakeLists.txt fmt/format.cc fmt/format.h fmt/include/fmt/core.h fmt/include/fmt/format-inl.h fmt/include/fmt/format.h fmt/include/fmt/ostream.h fmt/include/fmt/posix.h fmt/include/fmt/printf.h fmt/include/fmt/ranges.h fmt/include/fmt/time.h fmt/src/format.cc fmt/src/posix.cc fmt/support/cmake/cxx14.cmake tests/fmt/main.cpp |
diffstat | 16 files changed, 8038 insertions(+), 4847 deletions(-) [+] |
line wrap: on
line diff
--- a/VERSION.fmt.txt Fri Jul 13 12:57:10 2018 +0200 +++ b/VERSION.fmt.txt Fri Jul 13 13:15:12 2018 +0200 @@ -1,1 +1,1 @@ -3.0.1 +5.1.0
--- a/fmt/CMakeLists.txt Fri Jul 13 12:57:10 2018 +0200 +++ b/fmt/CMakeLists.txt Fri Jul 13 13:15:12 2018 +0200 @@ -1,27 +1,52 @@ -# -# CMakeLists.txt -- CMake build system for cppformat -# -# Copyright (c) 2016-2018 David Demelier <markand@malikania.fr> -# -# Permission to use, copy, modify, and/or distribute this software for any -# purpose with or without fee is hereby granted, provided that the above -# copyright notice and this permission notice appear in all copies. -# -# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES -# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF -# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR -# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES -# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN -# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF -# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. -# +cmake_minimum_required(VERSION 3.1.0) +project(fmt) + +set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} + "${CMAKE_CURRENT_SOURCE_DIR}/support/cmake") + +include(cxx14) +include(CheckCXXCompilerFlag) + +include(CheckSymbolExists) + +if (WIN32) + check_symbol_exists(open io.h HAVE_OPEN) +else () + check_symbol_exists(open fcntl.h HAVE_OPEN) +endif () -cmake_minimum_required(VERSION 3.0) -project(libfmt) -add_library(libfmt format.cc format.h) +set( + HEADERS + ${libfmt_SOURCE_DIR}/include/fmt/core.h + ${libfmt_SOURCE_DIR}/include/fmt/format.h + ${libfmt_SOURCE_DIR}/include/fmt/format-inl.h + ${libfmt_SOURCE_DIR}/include/fmt/ostream.h + ${libfmt_SOURCE_DIR}/include/fmt/printf.h + ${libfmt_SOURCE_DIR}/include/fmt/time.h + ${libfmt_SOURCE_DIR}/include/fmt/ranges.h +) + +set(FMT_SOURCES ${libfmt_SOURCE_DIR}/src/format.cc) + +if (HAVE_OPEN) + set(FMT_HEADERS ${FMT_HEADERS} ${libfmt_SOURCE_DIR}/include/fmt/posix.h) + set(FMT_SOURCES ${FMT_SOURCES} ${libfmt_SOURCE_DIR}/src/posix.cc) +endif () + +add_library(libfmt ${FMT_SOURCES} ${FMT_HEADERS}) +set_target_properties(libfmt PROPERTIES PREFIX "") + target_include_directories( libfmt PUBLIC - $<BUILD_INTERFACE:${libfmt_SOURCE_DIR}> + $<BUILD_INTERFACE:${fmt_SOURCE_DIR}/include> ) -set_target_properties(libfmt PROPERTIES PREFIX "") + +if (BUILD_SHARED_LIBS) + if (UNIX AND NOT APPLE) + # Fix rpmlint warning: + # unused-direct-shlib-dependency /usr/lib/libformat.so.1.1.0 /lib/libm.so.6. + target_link_libraries(libfmt -Wl,--as-needed) + endif () + target_compile_definitions(libfmt PRIVATE FMT_EXPORT INTERFACE FMT_SHARED) +endif ()
--- a/fmt/format.cc Fri Jul 13 12:57:10 2018 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,940 +0,0 @@ -/* - Formatting library for C++ - - Copyright (c) 2012 - 2016, Victor Zverovich - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - - 1. Redistributions of source code must retain the above copyright notice, this - list of conditions and the following disclaimer. - 2. Redistributions in binary form must reproduce the above copyright notice, - this list of conditions and the following disclaimer in the documentation - and/or other materials provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND - ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR - ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "format.h" - -#include <string.h> - -#include <cctype> -#include <cerrno> -#include <climits> -#include <cmath> -#include <cstdarg> -#include <cstddef> // for std::ptrdiff_t - -#if defined(_WIN32) && defined(__MINGW32__) -# include <cstring> -#endif - -#if FMT_USE_WINDOWS_H -# if defined(NOMINMAX) || defined(FMT_WIN_MINMAX) -# include <windows.h> -# else -# define NOMINMAX -# include <windows.h> -# undef NOMINMAX -# endif -#endif - -using fmt::internal::Arg; - -#if FMT_EXCEPTIONS -# define FMT_TRY try -# define FMT_CATCH(x) catch (x) -#else -# define FMT_TRY if (true) -# define FMT_CATCH(x) if (false) -#endif - -#ifdef _MSC_VER -# pragma warning(push) -# pragma warning(disable: 4127) // conditional expression is constant -# pragma warning(disable: 4702) // unreachable code -// Disable deprecation warning for strerror. The latter is not called but -// MSVC fails to detect it. -# pragma warning(disable: 4996) -#endif - -// Dummy implementations of strerror_r and strerror_s called if corresponding -// system functions are not available. -static inline fmt::internal::Null<> strerror_r(int, char *, ...) { - return fmt::internal::Null<>(); -} -static inline fmt::internal::Null<> strerror_s(char *, std::size_t, ...) { - return fmt::internal::Null<>(); -} - -namespace fmt { - -FMT_FUNC internal::RuntimeError::~RuntimeError() throw() {} -FMT_FUNC FormatError::~FormatError() throw() {} -FMT_FUNC SystemError::~SystemError() throw() {} - -namespace { - -#ifndef _MSC_VER -# define FMT_SNPRINTF snprintf -#else // _MSC_VER -inline int fmt_snprintf(char *buffer, size_t size, const char *format, ...) { - va_list args; - va_start(args, format); - int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args); - va_end(args); - return result; -} -# define FMT_SNPRINTF fmt_snprintf -#endif // _MSC_VER - -#if defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT) -# define FMT_SWPRINTF snwprintf -#else -# define FMT_SWPRINTF swprintf -#endif // defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT) - -// Checks if a value fits in int - used to avoid warnings about comparing -// signed and unsigned integers. -template <bool IsSigned> -struct IntChecker { - template <typename T> - static bool fits_in_int(T value) { - unsigned max = INT_MAX; - return value <= max; - } - static bool fits_in_int(bool) { return true; } -}; - -template <> -struct IntChecker<true> { - template <typename T> - static bool fits_in_int(T value) { - return value >= INT_MIN && value <= INT_MAX; - } - static bool fits_in_int(int) { return true; } -}; - -const char RESET_COLOR[] = "\x1b[0m"; - -typedef void (*FormatFunc)(Writer &, int, StringRef); - -// Portable thread-safe version of strerror. -// Sets buffer to point to a string describing the error code. -// This can be either a pointer to a string stored in buffer, -// or a pointer to some static immutable string. -// Returns one of the following values: -// 0 - success -// ERANGE - buffer is not large enough to store the error message -// other - failure -// Buffer should be at least of size 1. -int safe_strerror( - int error_code, char *&buffer, std::size_t buffer_size) FMT_NOEXCEPT { - FMT_ASSERT(buffer != 0 && buffer_size != 0, "invalid buffer"); - - class StrError { - private: - int error_code_; - char *&buffer_; - std::size_t buffer_size_; - - // A noop assignment operator to avoid bogus warnings. - void operator=(const StrError &) {} - - // Handle the result of XSI-compliant version of strerror_r. - int handle(int result) { - // glibc versions before 2.13 return result in errno. - return result == -1 ? errno : result; - } - - // Handle the result of GNU-specific version of strerror_r. - int handle(char *message) { - // If the buffer is full then the message is probably truncated. - if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1) - return ERANGE; - buffer_ = message; - return 0; - } - - // Handle the case when strerror_r is not available. - int handle(internal::Null<>) { - return fallback(strerror_s(buffer_, buffer_size_, error_code_)); - } - - // Fallback to strerror_s when strerror_r is not available. - int fallback(int result) { - // If the buffer is full then the message is probably truncated. - return result == 0 && strlen(buffer_) == buffer_size_ - 1 ? - ERANGE : result; - } - - // Fallback to strerror if strerror_r and strerror_s are not available. - int fallback(internal::Null<>) { - errno = 0; - buffer_ = strerror(error_code_); - return errno; - } - - public: - StrError(int err_code, char *&buf, std::size_t buf_size) - : error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {} - - int run() { - strerror_r(0, 0, ""); // Suppress a warning about unused strerror_r. - return handle(strerror_r(error_code_, buffer_, buffer_size_)); - } - }; - return StrError(error_code, buffer, buffer_size).run(); -} - -void format_error_code(Writer &out, int error_code, - StringRef message) FMT_NOEXCEPT { - // Report error code making sure that the output fits into - // INLINE_BUFFER_SIZE to avoid dynamic memory allocation and potential - // bad_alloc. - out.clear(); - static const char SEP[] = ": "; - static const char ERROR_STR[] = "error "; - // Subtract 2 to account for terminating null characters in SEP and ERROR_STR. - std::size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2; - typedef internal::IntTraits<int>::MainType MainType; - MainType abs_value = static_cast<MainType>(error_code); - if (internal::is_negative(error_code)) { - abs_value = 0 - abs_value; - ++error_code_size; - } - error_code_size += internal::count_digits(abs_value); - if (message.size() <= internal::INLINE_BUFFER_SIZE - error_code_size) - out << message << SEP; - out << ERROR_STR << error_code; - assert(out.size() <= internal::INLINE_BUFFER_SIZE); -} - -void report_error(FormatFunc func, int error_code, - StringRef message) FMT_NOEXCEPT { - MemoryWriter full_message; - func(full_message, error_code, message); - // Use Writer::data instead of Writer::c_str to avoid potential memory - // allocation. - std::fwrite(full_message.data(), full_message.size(), 1, stderr); - std::fputc('\n', stderr); -} - -// IsZeroInt::visit(arg) returns true iff arg is a zero integer. -class IsZeroInt : public ArgVisitor<IsZeroInt, bool> { - public: - template <typename T> - bool visit_any_int(T value) { return value == 0; } -}; - -// Checks if an argument is a valid printf width specifier and sets -// left alignment if it is negative. -class WidthHandler : public ArgVisitor<WidthHandler, unsigned> { - private: - FormatSpec &spec_; - - FMT_DISALLOW_COPY_AND_ASSIGN(WidthHandler); - - public: - explicit WidthHandler(FormatSpec &spec) : spec_(spec) {} - - void report_unhandled_arg() { - FMT_THROW(FormatError("width is not integer")); - } - - template <typename T> - unsigned visit_any_int(T value) { - typedef typename internal::IntTraits<T>::MainType UnsignedType; - UnsignedType width = static_cast<UnsignedType>(value); - if (internal::is_negative(value)) { - spec_.align_ = ALIGN_LEFT; - width = 0 - width; - } - if (width > INT_MAX) - FMT_THROW(FormatError("number is too big")); - return static_cast<unsigned>(width); - } -}; - -class PrecisionHandler : public ArgVisitor<PrecisionHandler, int> { - public: - void report_unhandled_arg() { - FMT_THROW(FormatError("precision is not integer")); - } - - template <typename T> - int visit_any_int(T value) { - if (!IntChecker<std::numeric_limits<T>::is_signed>::fits_in_int(value)) - FMT_THROW(FormatError("number is too big")); - return static_cast<int>(value); - } -}; - -template <typename T, typename U> -struct is_same { - enum { value = 0 }; -}; - -template <typename T> -struct is_same<T, T> { - enum { value = 1 }; -}; - -// An argument visitor that converts an integer argument to T for printf, -// if T is an integral type. If T is void, the argument is converted to -// corresponding signed or unsigned type depending on the type specifier: -// 'd' and 'i' - signed, other - unsigned) -template <typename T = void> -class ArgConverter : public ArgVisitor<ArgConverter<T>, void> { - private: - internal::Arg &arg_; - wchar_t type_; - - FMT_DISALLOW_COPY_AND_ASSIGN(ArgConverter); - - public: - ArgConverter(internal::Arg &arg, wchar_t type) - : arg_(arg), type_(type) {} - - void visit_bool(bool value) { - if (type_ != 's') - visit_any_int(value); - } - - template <typename U> - void visit_any_int(U value) { - bool is_signed = type_ == 'd' || type_ == 'i'; - using internal::Arg; - typedef typename internal::Conditional< - is_same<T, void>::value, U, T>::type TargetType; - if (sizeof(TargetType) <= sizeof(int)) { - // Extra casts are used to silence warnings. - if (is_signed) { - arg_.type = Arg::INT; - arg_.int_value = static_cast<int>(static_cast<TargetType>(value)); - } else { - arg_.type = Arg::UINT; - typedef typename internal::MakeUnsigned<TargetType>::Type Unsigned; - arg_.uint_value = static_cast<unsigned>(static_cast<Unsigned>(value)); - } - } else { - if (is_signed) { - arg_.type = Arg::LONG_LONG; - // glibc's printf doesn't sign extend arguments of smaller types: - // std::printf("%lld", -42); // prints "4294967254" - // but we don't have to do the same because it's a UB. - arg_.long_long_value = static_cast<LongLong>(value); - } else { - arg_.type = Arg::ULONG_LONG; - arg_.ulong_long_value = - static_cast<typename internal::MakeUnsigned<U>::Type>(value); - } - } - } -}; - -// Converts an integer argument to char for printf. -class CharConverter : public ArgVisitor<CharConverter, void> { - private: - internal::Arg &arg_; - - FMT_DISALLOW_COPY_AND_ASSIGN(CharConverter); - - public: - explicit CharConverter(internal::Arg &arg) : arg_(arg) {} - - template <typename T> - void visit_any_int(T value) { - arg_.type = internal::Arg::CHAR; - arg_.int_value = static_cast<char>(value); - } -}; -} // namespace - -namespace internal { - -template <typename Char> -class PrintfArgFormatter : - public ArgFormatterBase<PrintfArgFormatter<Char>, Char> { - - void write_null_pointer() { - this->spec().type_ = 0; - this->write("(nil)"); - } - - typedef ArgFormatterBase<PrintfArgFormatter<Char>, Char> Base; - - public: - PrintfArgFormatter(BasicWriter<Char> &w, FormatSpec &s) - : ArgFormatterBase<PrintfArgFormatter<Char>, Char>(w, s) {} - - void visit_bool(bool value) { - FormatSpec &fmt_spec = this->spec(); - if (fmt_spec.type_ != 's') - return this->visit_any_int(value); - fmt_spec.type_ = 0; - this->write(value); - } - - void visit_char(int value) { - const FormatSpec &fmt_spec = this->spec(); - BasicWriter<Char> &w = this->writer(); - if (fmt_spec.type_ && fmt_spec.type_ != 'c') - w.write_int(value, fmt_spec); - typedef typename BasicWriter<Char>::CharPtr CharPtr; - CharPtr out = CharPtr(); - if (fmt_spec.width_ > 1) { - Char fill = ' '; - out = w.grow_buffer(fmt_spec.width_); - if (fmt_spec.align_ != ALIGN_LEFT) { - std::fill_n(out, fmt_spec.width_ - 1, fill); - out += fmt_spec.width_ - 1; - } else { - std::fill_n(out + 1, fmt_spec.width_ - 1, fill); - } - } else { - out = w.grow_buffer(1); - } - *out = static_cast<Char>(value); - } - - void visit_cstring(const char *value) { - if (value) - Base::visit_cstring(value); - else if (this->spec().type_ == 'p') - write_null_pointer(); - else - this->write("(null)"); - } - - void visit_pointer(const void *value) { - if (value) - return Base::visit_pointer(value); - this->spec().type_ = 0; - write_null_pointer(); - } - - void visit_custom(Arg::CustomValue c) { - BasicFormatter<Char> formatter(ArgList(), this->writer()); - const Char format_str[] = {'}', 0}; - const Char *format = format_str; - c.format(&formatter, c.value, &format); - } -}; -} // namespace internal -} // namespace fmt - -FMT_FUNC void fmt::SystemError::init( - int err_code, CStringRef format_str, ArgList args) { - error_code_ = err_code; - MemoryWriter w; - internal::format_system_error(w, err_code, format(format_str, args)); - std::runtime_error &base = *this; - base = std::runtime_error(w.str()); -} - -template <typename T> -int fmt::internal::CharTraits<char>::format_float( - char *buffer, std::size_t size, const char *format, - unsigned width, int precision, T value) { - if (width == 0) { - return precision < 0 ? - FMT_SNPRINTF(buffer, size, format, value) : - FMT_SNPRINTF(buffer, size, format, precision, value); - } - return precision < 0 ? - FMT_SNPRINTF(buffer, size, format, width, value) : - FMT_SNPRINTF(buffer, size, format, width, precision, value); -} - -template <typename T> -int fmt::internal::CharTraits<wchar_t>::format_float( - wchar_t *buffer, std::size_t size, const wchar_t *format, - unsigned width, int precision, T value) { - if (width == 0) { - return precision < 0 ? - FMT_SWPRINTF(buffer, size, format, value) : - FMT_SWPRINTF(buffer, size, format, precision, value); - } - return precision < 0 ? - FMT_SWPRINTF(buffer, size, format, width, value) : - FMT_SWPRINTF(buffer, size, format, width, precision, value); -} - -template <typename T> -const char fmt::internal::BasicData<T>::DIGITS[] = - "0001020304050607080910111213141516171819" - "2021222324252627282930313233343536373839" - "4041424344454647484950515253545556575859" - "6061626364656667686970717273747576777879" - "8081828384858687888990919293949596979899"; - -#define FMT_POWERS_OF_10(factor) \ - factor * 10, \ - factor * 100, \ - factor * 1000, \ - factor * 10000, \ - factor * 100000, \ - factor * 1000000, \ - factor * 10000000, \ - factor * 100000000, \ - factor * 1000000000 - -template <typename T> -const uint32_t fmt::internal::BasicData<T>::POWERS_OF_10_32[] = { - 0, FMT_POWERS_OF_10(1) -}; - -template <typename T> -const uint64_t fmt::internal::BasicData<T>::POWERS_OF_10_64[] = { - 0, - FMT_POWERS_OF_10(1), - FMT_POWERS_OF_10(fmt::ULongLong(1000000000)), - // Multiply several constants instead of using a single long long constant - // to avoid warnings about C++98 not supporting long long. - fmt::ULongLong(1000000000) * fmt::ULongLong(1000000000) * 10 -}; - -FMT_FUNC void fmt::internal::report_unknown_type(char code, const char *type) { - (void)type; - if (std::isprint(static_cast<unsigned char>(code))) { - FMT_THROW(fmt::FormatError( - fmt::format("unknown format code '{}' for {}", code, type))); - } - FMT_THROW(fmt::FormatError( - fmt::format("unknown format code '\\x{:02x}' for {}", - static_cast<unsigned>(code), type))); -} - -#if FMT_USE_WINDOWS_H - -FMT_FUNC fmt::internal::UTF8ToUTF16::UTF8ToUTF16(fmt::StringRef s) { - static const char ERROR_MSG[] = "cannot convert string from UTF-8 to UTF-16"; - if (s.size() > INT_MAX) - FMT_THROW(WindowsError(ERROR_INVALID_PARAMETER, ERROR_MSG)); - int s_size = static_cast<int>(s.size()); - int length = MultiByteToWideChar( - CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, 0, 0); - if (length == 0) - FMT_THROW(WindowsError(GetLastError(), ERROR_MSG)); - buffer_.resize(length + 1); - length = MultiByteToWideChar( - CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, &buffer_[0], length); - if (length == 0) - FMT_THROW(WindowsError(GetLastError(), ERROR_MSG)); - buffer_[length] = 0; -} - -FMT_FUNC fmt::internal::UTF16ToUTF8::UTF16ToUTF8(fmt::WStringRef s) { - if (int error_code = convert(s)) { - FMT_THROW(WindowsError(error_code, - "cannot convert string from UTF-16 to UTF-8")); - } -} - -FMT_FUNC int fmt::internal::UTF16ToUTF8::convert(fmt::WStringRef s) { - if (s.size() > INT_MAX) - return ERROR_INVALID_PARAMETER; - int s_size = static_cast<int>(s.size()); - int length = WideCharToMultiByte(CP_UTF8, 0, s.data(), s_size, 0, 0, 0, 0); - if (length == 0) - return GetLastError(); - buffer_.resize(length + 1); - length = WideCharToMultiByte( - CP_UTF8, 0, s.data(), s_size, &buffer_[0], length, 0, 0); - if (length == 0) - return GetLastError(); - buffer_[length] = 0; - return 0; -} - -FMT_FUNC void fmt::WindowsError::init( - int err_code, CStringRef format_str, ArgList args) { - error_code_ = err_code; - MemoryWriter w; - internal::format_windows_error(w, err_code, format(format_str, args)); - std::runtime_error &base = *this; - base = std::runtime_error(w.str()); -} - -FMT_FUNC void fmt::internal::format_windows_error( - fmt::Writer &out, int error_code, - fmt::StringRef message) FMT_NOEXCEPT { - FMT_TRY { - MemoryBuffer<wchar_t, INLINE_BUFFER_SIZE> buffer; - buffer.resize(INLINE_BUFFER_SIZE); - for (;;) { - wchar_t *system_message = &buffer[0]; - int result = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, - 0, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), - system_message, static_cast<uint32_t>(buffer.size()), 0); - if (result != 0) { - UTF16ToUTF8 utf8_message; - if (utf8_message.convert(system_message) == ERROR_SUCCESS) { - out << message << ": " << utf8_message; - return; - } - break; - } - if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) - break; // Can't get error message, report error code instead. - buffer.resize(buffer.size() * 2); - } - } FMT_CATCH(...) {} - fmt::format_error_code(out, error_code, message); // 'fmt::' is for bcc32. -} - -#endif // FMT_USE_WINDOWS_H - -FMT_FUNC void fmt::internal::format_system_error( - fmt::Writer &out, int error_code, - fmt::StringRef message) FMT_NOEXCEPT { - FMT_TRY { - MemoryBuffer<char, INLINE_BUFFER_SIZE> buffer; - buffer.resize(INLINE_BUFFER_SIZE); - for (;;) { - char *system_message = &buffer[0]; - int result = safe_strerror(error_code, system_message, buffer.size()); - if (result == 0) { - out << message << ": " << system_message; - return; - } - if (result != ERANGE) - break; // Can't get error message, report error code instead. - buffer.resize(buffer.size() * 2); - } - } FMT_CATCH(...) {} - fmt::format_error_code(out, error_code, message); // 'fmt::' is for bcc32. -} - -template <typename Char> -void fmt::internal::ArgMap<Char>::init(const ArgList &args) { - if (!map_.empty()) - return; - typedef internal::NamedArg<Char> NamedArg; - const NamedArg *named_arg = 0; - bool use_values = - args.type(ArgList::MAX_PACKED_ARGS - 1) == internal::Arg::NONE; - if (use_values) { - for (unsigned i = 0;/*nothing*/; ++i) { - internal::Arg::Type arg_type = args.type(i); - switch (arg_type) { - case internal::Arg::NONE: - return; - case internal::Arg::NAMED_ARG: - named_arg = static_cast<const NamedArg*>(args.values_[i].pointer); - map_.push_back(Pair(named_arg->name, *named_arg)); - break; - default: - /*nothing*/; - } - } - return; - } - for (unsigned i = 0; i != ArgList::MAX_PACKED_ARGS; ++i) { - internal::Arg::Type arg_type = args.type(i); - if (arg_type == internal::Arg::NAMED_ARG) { - named_arg = static_cast<const NamedArg*>(args.args_[i].pointer); - map_.push_back(Pair(named_arg->name, *named_arg)); - } - } - for (unsigned i = ArgList::MAX_PACKED_ARGS;/*nothing*/; ++i) { - switch (args.args_[i].type) { - case internal::Arg::NONE: - return; - case internal::Arg::NAMED_ARG: - named_arg = static_cast<const NamedArg*>(args.args_[i].pointer); - map_.push_back(Pair(named_arg->name, *named_arg)); - break; - default: - /*nothing*/; - } - } -} - -template <typename Char> -void fmt::internal::FixedBuffer<Char>::grow(std::size_t) { - FMT_THROW(std::runtime_error("buffer overflow")); -} - -FMT_FUNC Arg fmt::internal::FormatterBase::do_get_arg( - unsigned arg_index, const char *&error) { - Arg arg = args_[arg_index]; - switch (arg.type) { - case Arg::NONE: - error = "argument index out of range"; - break; - case Arg::NAMED_ARG: - arg = *static_cast<const internal::Arg*>(arg.pointer); - break; - default: - /*nothing*/; - } - return arg; -} - -template <typename Char> -void fmt::internal::PrintfFormatter<Char>::parse_flags( - FormatSpec &spec, const Char *&s) { - for (;;) { - switch (*s++) { - case '-': - spec.align_ = ALIGN_LEFT; - break; - case '+': - spec.flags_ |= SIGN_FLAG | PLUS_FLAG; - break; - case '0': - spec.fill_ = '0'; - break; - case ' ': - spec.flags_ |= SIGN_FLAG; - break; - case '#': - spec.flags_ |= HASH_FLAG; - break; - default: - --s; - return; - } - } -} - -template <typename Char> -Arg fmt::internal::PrintfFormatter<Char>::get_arg( - const Char *s, unsigned arg_index) { - (void)s; - const char *error = 0; - Arg arg = arg_index == UINT_MAX ? - next_arg(error) : FormatterBase::get_arg(arg_index - 1, error); - if (error) - FMT_THROW(FormatError(!*s ? "invalid format string" : error)); - return arg; -} - -template <typename Char> -unsigned fmt::internal::PrintfFormatter<Char>::parse_header( - const Char *&s, FormatSpec &spec) { - unsigned arg_index = UINT_MAX; - Char c = *s; - if (c >= '0' && c <= '9') { - // Parse an argument index (if followed by '$') or a width possibly - // preceded with '0' flag(s). - unsigned value = parse_nonnegative_int(s); - if (*s == '$') { // value is an argument index - ++s; - arg_index = value; - } else { - if (c == '0') - spec.fill_ = '0'; - if (value != 0) { - // Nonzero value means that we parsed width and don't need to - // parse it or flags again, so return now. - spec.width_ = value; - return arg_index; - } - } - } - parse_flags(spec, s); - // Parse width. - if (*s >= '0' && *s <= '9') { - spec.width_ = parse_nonnegative_int(s); - } else if (*s == '*') { - ++s; - spec.width_ = WidthHandler(spec).visit(get_arg(s)); - } - return arg_index; -} - -template <typename Char> -void fmt::internal::PrintfFormatter<Char>::format( - BasicWriter<Char> &writer, BasicCStringRef<Char> format_str) { - const Char *start = format_str.c_str(); - const Char *s = start; - while (*s) { - Char c = *s++; - if (c != '%') continue; - if (*s == c) { - write(writer, start, s); - start = ++s; - continue; - } - write(writer, start, s - 1); - - FormatSpec spec; - spec.align_ = ALIGN_RIGHT; - - // Parse argument index, flags and width. - unsigned arg_index = parse_header(s, spec); - - // Parse precision. - if (*s == '.') { - ++s; - if ('0' <= *s && *s <= '9') { - spec.precision_ = static_cast<int>(parse_nonnegative_int(s)); - } else if (*s == '*') { - ++s; - spec.precision_ = PrecisionHandler().visit(get_arg(s)); - } - } - - Arg arg = get_arg(s, arg_index); - if (spec.flag(HASH_FLAG) && IsZeroInt().visit(arg)) - spec.flags_ &= ~to_unsigned<int>(HASH_FLAG); - if (spec.fill_ == '0') { - if (arg.type <= Arg::LAST_NUMERIC_TYPE) - spec.align_ = ALIGN_NUMERIC; - else - spec.fill_ = ' '; // Ignore '0' flag for non-numeric types. - } - - // Parse length and convert the argument to the required type. - switch (*s++) { - case 'h': - if (*s == 'h') - ArgConverter<signed char>(arg, *++s).visit(arg); - else - ArgConverter<short>(arg, *s).visit(arg); - break; - case 'l': - if (*s == 'l') - ArgConverter<fmt::LongLong>(arg, *++s).visit(arg); - else - ArgConverter<long>(arg, *s).visit(arg); - break; - case 'j': - ArgConverter<intmax_t>(arg, *s).visit(arg); - break; - case 'z': - ArgConverter<std::size_t>(arg, *s).visit(arg); - break; - case 't': - ArgConverter<std::ptrdiff_t>(arg, *s).visit(arg); - break; - case 'L': - // printf produces garbage when 'L' is omitted for long double, no - // need to do the same. - break; - default: - --s; - ArgConverter<void>(arg, *s).visit(arg); - } - - // Parse type. - if (!*s) - FMT_THROW(FormatError("invalid format string")); - spec.type_ = static_cast<char>(*s++); - if (arg.type <= Arg::LAST_INTEGER_TYPE) { - // Normalize type. - switch (spec.type_) { - case 'i': case 'u': - spec.type_ = 'd'; - break; - case 'c': - // TODO: handle wchar_t - CharConverter(arg).visit(arg); - break; - } - } - - start = s; - - // Format argument. - internal::PrintfArgFormatter<Char>(writer, spec).visit(arg); - } - write(writer, start, s); -} - -FMT_FUNC void fmt::report_system_error( - int error_code, fmt::StringRef message) FMT_NOEXCEPT { - // 'fmt::' is for bcc32. - fmt::report_error(internal::format_system_error, error_code, message); -} - -#if FMT_USE_WINDOWS_H -FMT_FUNC void fmt::report_windows_error( - int error_code, fmt::StringRef message) FMT_NOEXCEPT { - // 'fmt::' is for bcc32. - fmt::report_error(internal::format_windows_error, error_code, message); -} -#endif - -FMT_FUNC void fmt::print(std::FILE *f, CStringRef format_str, ArgList args) { - MemoryWriter w; - w.write(format_str, args); - std::fwrite(w.data(), 1, w.size(), f); -} - -FMT_FUNC void fmt::print(CStringRef format_str, ArgList args) { - print(stdout, format_str, args); -} - -FMT_FUNC void fmt::print_colored(Color c, CStringRef format, ArgList args) { - char escape[] = "\x1b[30m"; - escape[3] = static_cast<char>('0' + c); - std::fputs(escape, stdout); - print(format, args); - std::fputs(RESET_COLOR, stdout); -} - -FMT_FUNC int fmt::fprintf(std::FILE *f, CStringRef format, ArgList args) { - MemoryWriter w; - printf(w, format, args); - std::size_t size = w.size(); - return std::fwrite(w.data(), 1, size, f) < size ? -1 : static_cast<int>(size); -} - -#ifndef FMT_HEADER_ONLY - -template struct fmt::internal::BasicData<void>; - -// Explicit instantiations for char. - -template void fmt::internal::FixedBuffer<char>::grow(std::size_t); - -template void fmt::internal::ArgMap<char>::init(const fmt::ArgList &args); - -template void fmt::internal::PrintfFormatter<char>::format( - BasicWriter<char> &writer, CStringRef format); - -template int fmt::internal::CharTraits<char>::format_float( - char *buffer, std::size_t size, const char *format, - unsigned width, int precision, double value); - -template int fmt::internal::CharTraits<char>::format_float( - char *buffer, std::size_t size, const char *format, - unsigned width, int precision, long double value); - -// Explicit instantiations for wchar_t. - -template void fmt::internal::FixedBuffer<wchar_t>::grow(std::size_t); - -template void fmt::internal::ArgMap<wchar_t>::init(const fmt::ArgList &args); - -template void fmt::internal::PrintfFormatter<wchar_t>::format( - BasicWriter<wchar_t> &writer, WCStringRef format); - -template int fmt::internal::CharTraits<wchar_t>::format_float( - wchar_t *buffer, std::size_t size, const wchar_t *format, - unsigned width, int precision, double value); - -template int fmt::internal::CharTraits<wchar_t>::format_float( - wchar_t *buffer, std::size_t size, const wchar_t *format, - unsigned width, int precision, long double value); - -#endif // FMT_HEADER_ONLY - -#ifdef _MSC_VER -# pragma warning(pop) -#endif
--- a/fmt/format.h Fri Jul 13 12:57:10 2018 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,3883 +0,0 @@ -/* - Formatting library for C++ - - Copyright (c) 2012 - 2016, Victor Zverovich - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - - 1. Redistributions of source code must retain the above copyright notice, this - list of conditions and the following disclaimer. - 2. Redistributions in binary form must reproduce the above copyright notice, - this list of conditions and the following disclaimer in the documentation - and/or other materials provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND - ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR - ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef FMT_FORMAT_H_ -#define FMT_FORMAT_H_ - -#include <cassert> -#include <clocale> -#include <cmath> -#include <cstdio> -#include <cstring> -#include <limits> -#include <memory> -#include <stdexcept> -#include <string> -#include <vector> -#include <utility> - -#ifdef _SECURE_SCL -# define FMT_SECURE_SCL _SECURE_SCL -#else -# define FMT_SECURE_SCL 0 -#endif - -#if FMT_SECURE_SCL -# include <iterator> -#endif - -#ifdef _MSC_VER -# define FMT_MSC_VER _MSC_VER -#else -# define FMT_MSC_VER 0 -#endif - -#if FMT_MSC_VER && FMT_MSC_VER <= 1500 -typedef unsigned __int32 uint32_t; -typedef unsigned __int64 uint64_t; -typedef __int64 intmax_t; -#else -#include <stdint.h> -#endif - -#if !defined(FMT_HEADER_ONLY) && defined(_WIN32) -# ifdef FMT_EXPORT -# define FMT_API __declspec(dllexport) -# elif defined(FMT_SHARED) -# define FMT_API __declspec(dllimport) -# endif -#endif -#ifndef FMT_API -# define FMT_API -#endif - -#ifdef __GNUC__ -# define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) -# define FMT_GCC_EXTENSION __extension__ -# if FMT_GCC_VERSION >= 406 -# pragma GCC diagnostic push -// Disable the warning about "long long" which is sometimes reported even -// when using __extension__. -# pragma GCC diagnostic ignored "-Wlong-long" -// Disable the warning about declaration shadowing because it affects too -// many valid cases. -# pragma GCC diagnostic ignored "-Wshadow" -// Disable the warning about implicit conversions that may change the sign of -// an integer; silencing it otherwise would require many explicit casts. -# pragma GCC diagnostic ignored "-Wsign-conversion" -# endif -# if __cplusplus >= 201103L || defined __GXX_EXPERIMENTAL_CXX0X__ -# define FMT_HAS_GXX_CXX11 1 -# endif -#else -# define FMT_GCC_EXTENSION -#endif - -#if defined(__INTEL_COMPILER) -# define FMT_ICC_VERSION __INTEL_COMPILER -#elif defined(__ICL) -# define FMT_ICC_VERSION __ICL -#endif - -#if defined(__clang__) && !defined(FMT_ICC_VERSION) -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wdocumentation-unknown-command" -# pragma clang diagnostic ignored "-Wpadded" -#endif - -#ifdef __GNUC_LIBSTD__ -# define FMT_GNUC_LIBSTD_VERSION (__GNUC_LIBSTD__ * 100 + __GNUC_LIBSTD_MINOR__) -#endif - -#ifdef __has_feature -# define FMT_HAS_FEATURE(x) __has_feature(x) -#else -# define FMT_HAS_FEATURE(x) 0 -#endif - -#ifdef __has_builtin -# define FMT_HAS_BUILTIN(x) __has_builtin(x) -#else -# define FMT_HAS_BUILTIN(x) 0 -#endif - -#ifdef __has_cpp_attribute -# define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) -#else -# define FMT_HAS_CPP_ATTRIBUTE(x) 0 -#endif - -#ifndef FMT_USE_VARIADIC_TEMPLATES -// Variadic templates are available in GCC since version 4.4 -// (http://gcc.gnu.org/projects/cxx0x.html) and in Visual C++ -// since version 2013. -# define FMT_USE_VARIADIC_TEMPLATES \ - (FMT_HAS_FEATURE(cxx_variadic_templates) || \ - (FMT_GCC_VERSION >= 404 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1800) -#endif - -#ifndef FMT_USE_RVALUE_REFERENCES -// Don't use rvalue references when compiling with clang and an old libstdc++ -// as the latter doesn't provide std::move. -# if defined(FMT_GNUC_LIBSTD_VERSION) && FMT_GNUC_LIBSTD_VERSION <= 402 -# define FMT_USE_RVALUE_REFERENCES 0 -# else -# define FMT_USE_RVALUE_REFERENCES \ - (FMT_HAS_FEATURE(cxx_rvalue_references) || \ - (FMT_GCC_VERSION >= 403 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1600) -# endif -#endif - -#if FMT_USE_RVALUE_REFERENCES -# include <utility> // for std::move -#endif - -// Check if exceptions are disabled. -#if defined(__GNUC__) && !defined(__EXCEPTIONS) -# define FMT_EXCEPTIONS 0 -#endif -#if FMT_MSC_VER && !_HAS_EXCEPTIONS -# define FMT_EXCEPTIONS 0 -#endif -#ifndef FMT_EXCEPTIONS -# define FMT_EXCEPTIONS 1 -#endif - -#ifndef FMT_THROW -# if FMT_EXCEPTIONS -# define FMT_THROW(x) throw x -# else -# define FMT_THROW(x) assert(false) -# endif -#endif - -// Define FMT_USE_NOEXCEPT to make fmt use noexcept (C++11 feature). -#ifndef FMT_USE_NOEXCEPT -# define FMT_USE_NOEXCEPT 0 -#endif - -#ifndef FMT_NOEXCEPT -# if FMT_EXCEPTIONS -# if FMT_USE_NOEXCEPT || FMT_HAS_FEATURE(cxx_noexcept) || \ - (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || \ - FMT_MSC_VER >= 1900 -# define FMT_NOEXCEPT noexcept -# else -# define FMT_NOEXCEPT throw() -# endif -# else -# define FMT_NOEXCEPT -# endif -#endif - -#ifndef FMT_OVERRIDE -# if FMT_USE_OVERRIDE || FMT_HAS_FEATURE(cxx_override) || \ - (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || \ - FMT_MSC_VER >= 1900 -# define FMT_OVERRIDE override -# else -# define FMT_OVERRIDE -# endif -#endif - - -// A macro to disallow the copy constructor and operator= functions -// This should be used in the private: declarations for a class -#ifndef FMT_USE_DELETED_FUNCTIONS -# define FMT_USE_DELETED_FUNCTIONS 0 -#endif - -#if FMT_USE_DELETED_FUNCTIONS || FMT_HAS_FEATURE(cxx_deleted_functions) || \ - (FMT_GCC_VERSION >= 404 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1800 -# define FMT_DELETED_OR_UNDEFINED = delete -# define FMT_DISALLOW_COPY_AND_ASSIGN(TypeName) \ - TypeName(const TypeName&) = delete; \ - TypeName& operator=(const TypeName&) = delete -#else -# define FMT_DELETED_OR_UNDEFINED -# define FMT_DISALLOW_COPY_AND_ASSIGN(TypeName) \ - TypeName(const TypeName&); \ - TypeName& operator=(const TypeName&) -#endif - -#ifndef FMT_USE_USER_DEFINED_LITERALS -// All compilers which support UDLs also support variadic templates. This -// makes the fmt::literals implementation easier. However, an explicit check -// for variadic templates is added here just in case. -// For Intel's compiler both it and the system gcc/msc must support UDLs. -# define FMT_USE_USER_DEFINED_LITERALS \ - FMT_USE_VARIADIC_TEMPLATES && FMT_USE_RVALUE_REFERENCES && \ - (FMT_HAS_FEATURE(cxx_user_literals) || \ - (FMT_GCC_VERSION >= 407 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900) && \ - (!defined(FMT_ICC_VERSION) || FMT_ICC_VERSION >= 1500) -#endif - -#ifndef FMT_ASSERT -# define FMT_ASSERT(condition, message) assert((condition) && message) -#endif - -#if FMT_GCC_VERSION >= 400 || FMT_HAS_BUILTIN(__builtin_clz) -# define FMT_BUILTIN_CLZ(n) __builtin_clz(n) -#endif - -#if FMT_GCC_VERSION >= 400 || FMT_HAS_BUILTIN(__builtin_clzll) -# define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n) -#endif - -// Some compilers masquerade as both MSVC and GCC-likes or -// otherwise support __builtin_clz and __builtin_clzll, so -// only define FMT_BUILTIN_CLZ using the MSVC intrinsics -// if the clz and clzll builtins are not available. -#if FMT_MSC_VER && !defined(FMT_BUILTIN_CLZLL) -# include <intrin.h> // _BitScanReverse, _BitScanReverse64 - -namespace fmt { -namespace internal { -# pragma intrinsic(_BitScanReverse) -inline uint32_t clz(uint32_t x) { - unsigned long r = 0; - _BitScanReverse(&r, x); - - assert(x != 0); - // Static analysis complains about using uninitialized data - // "r", but the only way that can happen is if "x" is 0, - // which the callers guarantee to not happen. -# pragma warning(suppress: 6102) - return 31 - r; -} -# define FMT_BUILTIN_CLZ(n) fmt::internal::clz(n) - -# ifdef _WIN64 -# pragma intrinsic(_BitScanReverse64) -# endif - -inline uint32_t clzll(uint64_t x) { - unsigned long r = 0; -# ifdef _WIN64 - _BitScanReverse64(&r, x); -# else - // Scan the high 32 bits. - if (_BitScanReverse(&r, static_cast<uint32_t>(x >> 32))) - return 63 - (r + 32); - - // Scan the low 32 bits. - _BitScanReverse(&r, static_cast<uint32_t>(x)); -# endif - - assert(x != 0); - // Static analysis complains about using uninitialized data - // "r", but the only way that can happen is if "x" is 0, - // which the callers guarantee to not happen. -# pragma warning(suppress: 6102) - return 63 - r; -} -# define FMT_BUILTIN_CLZLL(n) fmt::internal::clzll(n) -} -} -#endif - -namespace fmt { -namespace internal { -struct DummyInt { - int data[2]; - operator int() const { return 0; } -}; -typedef std::numeric_limits<fmt::internal::DummyInt> FPUtil; - -// Dummy implementations of system functions such as signbit and ecvt called -// if the latter are not available. -inline DummyInt signbit(...) { return DummyInt(); } -inline DummyInt _ecvt_s(...) { return DummyInt(); } -inline DummyInt isinf(...) { return DummyInt(); } -inline DummyInt _finite(...) { return DummyInt(); } -inline DummyInt isnan(...) { return DummyInt(); } -inline DummyInt _isnan(...) { return DummyInt(); } - -// A helper function to suppress bogus "conditional expression is constant" -// warnings. -template <typename T> -inline T const_check(T value) { return value; } -} -} // namespace fmt - -namespace std { -// Standard permits specialization of std::numeric_limits. This specialization -// is used to resolve ambiguity between isinf and std::isinf in glibc: -// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48891 -// and the same for isnan and signbit. -template <> -class numeric_limits<fmt::internal::DummyInt> : - public std::numeric_limits<int> { - public: - // Portable version of isinf. - template <typename T> - static bool isinfinity(T x) { - using namespace fmt::internal; - // The resolution "priority" is: - // isinf macro > std::isinf > ::isinf > fmt::internal::isinf - if (const_check(sizeof(isinf(x)) == sizeof(bool) || - sizeof(isinf(x)) == sizeof(int))) { - return isinf(x) != 0; - } - return !_finite(static_cast<double>(x)); - } - - // Portable version of isnan. - template <typename T> - static bool isnotanumber(T x) { - using namespace fmt::internal; - if (const_check(sizeof(isnan(x)) == sizeof(bool) || - sizeof(isnan(x)) == sizeof(int))) { - return isnan(x) != 0; - } - return _isnan(static_cast<double>(x)) != 0; - } - - // Portable version of signbit. - static bool isnegative(double x) { - using namespace fmt::internal; - if (const_check(sizeof(signbit(x)) == sizeof(int))) - return signbit(x) != 0; - if (x < 0) return true; - if (!isnotanumber(x)) return false; - int dec = 0, sign = 0; - char buffer[2]; // The buffer size must be >= 2 or _ecvt_s will fail. - _ecvt_s(buffer, sizeof(buffer), x, 0, &dec, &sign); - return sign != 0; - } -}; -} // namespace std - -namespace fmt { - -// Fix the warning about long long on older versions of GCC -// that don't support the diagnostic pragma. -FMT_GCC_EXTENSION typedef long long LongLong; -FMT_GCC_EXTENSION typedef unsigned long long ULongLong; - -#if FMT_USE_RVALUE_REFERENCES -using std::move; -#endif - -template <typename Char> -class BasicWriter; - -typedef BasicWriter<char> Writer; -typedef BasicWriter<wchar_t> WWriter; - -template <typename Char> -class ArgFormatter; - -template <typename CharType, - typename ArgFormatter = fmt::ArgFormatter<CharType> > -class BasicFormatter; - -/** - \rst - A string reference. It can be constructed from a C string or ``std::string``. - - You can use one of the following typedefs for common character types: - - +------------+-------------------------+ - | Type | Definition | - +============+=========================+ - | StringRef | BasicStringRef<char> | - +------------+-------------------------+ - | WStringRef | BasicStringRef<wchar_t> | - +------------+-------------------------+ - - This class is most useful as a parameter type to allow passing - different types of strings to a function, for example:: - - template <typename... Args> - std::string format(StringRef format_str, const Args & ... args); - - format("{}", 42); - format(std::string("{}"), 42); - \endrst - */ -template <typename Char> -class BasicStringRef { - private: - const Char *data_; - std::size_t size_; - - public: - /** Constructs a string reference object from a C string and a size. */ - BasicStringRef(const Char *s, std::size_t size) : data_(s), size_(size) {} - - /** - \rst - Constructs a string reference object from a C string computing - the size with ``std::char_traits<Char>::length``. - \endrst - */ - BasicStringRef(const Char *s) - : data_(s), size_(std::char_traits<Char>::length(s)) {} - - /** - \rst - Constructs a string reference from an ``std::string`` object. - \endrst - */ - BasicStringRef(const std::basic_string<Char> &s) - : data_(s.c_str()), size_(s.size()) {} - - /** - \rst - Converts a string reference to an ``std::string`` object. - \endrst - */ - std::basic_string<Char> to_string() const { - return std::basic_string<Char>(data_, size_); - } - - /** Returns a pointer to the string data. */ - const Char *data() const { return data_; } - - /** Returns the string size. */ - std::size_t size() const { return size_; } - - // Lexicographically compare this string reference to other. - int compare(BasicStringRef other) const { - std::size_t size = size_ < other.size_ ? size_ : other.size_; - int result = std::char_traits<Char>::compare(data_, other.data_, size); - if (result == 0) - result = size_ == other.size_ ? 0 : (size_ < other.size_ ? -1 : 1); - return result; - } - - friend bool operator==(BasicStringRef lhs, BasicStringRef rhs) { - return lhs.compare(rhs) == 0; - } - friend bool operator!=(BasicStringRef lhs, BasicStringRef rhs) { - return lhs.compare(rhs) != 0; - } - friend bool operator<(BasicStringRef lhs, BasicStringRef rhs) { - return lhs.compare(rhs) < 0; - } - friend bool operator<=(BasicStringRef lhs, BasicStringRef rhs) { - return lhs.compare(rhs) <= 0; - } - friend bool operator>(BasicStringRef lhs, BasicStringRef rhs) { - return lhs.compare(rhs) > 0; - } - friend bool operator>=(BasicStringRef lhs, BasicStringRef rhs) { - return lhs.compare(rhs) >= 0; - } -}; - -typedef BasicStringRef<char> StringRef; -typedef BasicStringRef<wchar_t> WStringRef; - -/** - \rst - A reference to a null terminated string. It can be constructed from a C - string or ``std::string``. - - You can use one of the following typedefs for common character types: - - +-------------+--------------------------+ - | Type | Definition | - +=============+==========================+ - | CStringRef | BasicCStringRef<char> | - +-------------+--------------------------+ - | WCStringRef | BasicCStringRef<wchar_t> | - +-------------+--------------------------+ - - This class is most useful as a parameter type to allow passing - different types of strings to a function, for example:: - - template <typename... Args> - std::string format(CStringRef format_str, const Args & ... args); - - format("{}", 42); - format(std::string("{}"), 42); - \endrst - */ -template <typename Char> -class BasicCStringRef { - private: - const Char *data_; - - public: - /** Constructs a string reference object from a C string. */ - BasicCStringRef(const Char *s) : data_(s) {} - - /** - \rst - Constructs a string reference from an ``std::string`` object. - \endrst - */ - BasicCStringRef(const std::basic_string<Char> &s) : data_(s.c_str()) {} - - /** Returns the pointer to a C string. */ - const Char *c_str() const { return data_; } -}; - -typedef BasicCStringRef<char> CStringRef; -typedef BasicCStringRef<wchar_t> WCStringRef; - -/** A formatting error such as invalid format string. */ -class FormatError : public std::runtime_error { - public: - explicit FormatError(CStringRef message) - : std::runtime_error(message.c_str()) {} - ~FormatError() throw(); -}; - -namespace internal { - -// MakeUnsigned<T>::Type gives an unsigned type corresponding to integer type T. -template <typename T> -struct MakeUnsigned { typedef T Type; }; - -#define FMT_SPECIALIZE_MAKE_UNSIGNED(T, U) \ - template <> \ - struct MakeUnsigned<T> { typedef U Type; } - -FMT_SPECIALIZE_MAKE_UNSIGNED(char, unsigned char); -FMT_SPECIALIZE_MAKE_UNSIGNED(signed char, unsigned char); -FMT_SPECIALIZE_MAKE_UNSIGNED(short, unsigned short); -FMT_SPECIALIZE_MAKE_UNSIGNED(int, unsigned); -FMT_SPECIALIZE_MAKE_UNSIGNED(long, unsigned long); -FMT_SPECIALIZE_MAKE_UNSIGNED(LongLong, ULongLong); - -// Casts nonnegative integer to unsigned. -template <typename Int> -inline typename MakeUnsigned<Int>::Type to_unsigned(Int value) { - FMT_ASSERT(value >= 0, "negative value"); - return static_cast<typename MakeUnsigned<Int>::Type>(value); -} - -// The number of characters to store in the MemoryBuffer object itself -// to avoid dynamic memory allocation. -enum { INLINE_BUFFER_SIZE = 500 }; - -#if FMT_SECURE_SCL -// Use checked iterator to avoid warnings on MSVC. -template <typename T> -inline stdext::checked_array_iterator<T*> make_ptr(T *ptr, std::size_t size) { - return stdext::checked_array_iterator<T*>(ptr, size); -} -#else -template <typename T> -inline T *make_ptr(T *ptr, std::size_t) { return ptr; } -#endif -} // namespace internal - -/** - \rst - A buffer supporting a subset of ``std::vector``'s operations. - \endrst - */ -template <typename T> -class Buffer { - private: - FMT_DISALLOW_COPY_AND_ASSIGN(Buffer); - - protected: - T *ptr_; - std::size_t size_; - std::size_t capacity_; - - Buffer(T *ptr = 0, std::size_t capacity = 0) - : ptr_(ptr), size_(0), capacity_(capacity) {} - - /** - \rst - Increases the buffer capacity to hold at least *size* elements updating - ``ptr_`` and ``capacity_``. - \endrst - */ - virtual void grow(std::size_t size) = 0; - - public: - virtual ~Buffer() {} - - /** Returns the size of this buffer. */ - std::size_t size() const { return size_; } - - /** Returns the capacity of this buffer. */ - std::size_t capacity() const { return capacity_; } - - /** - Resizes the buffer. If T is a POD type new elements may not be initialized. - */ - void resize(std::size_t new_size) { - if (new_size > capacity_) - grow(new_size); - size_ = new_size; - } - - /** - \rst - Reserves space to store at least *capacity* elements. - \endrst - */ - void reserve(std::size_t capacity) { - if (capacity > capacity_) - grow(capacity); - } - - void clear() FMT_NOEXCEPT { size_ = 0; } - - void push_back(const T &value) { - if (size_ == capacity_) - grow(size_ + 1); - ptr_[size_++] = value; - } - - /** Appends data to the end of the buffer. */ - template <typename U> - void append(const U *begin, const U *end); - - T &operator[](std::size_t index) { return ptr_[index]; } - const T &operator[](std::size_t index) const { return ptr_[index]; } -}; - -template <typename T> -template <typename U> -void Buffer<T>::append(const U *begin, const U *end) { - std::size_t new_size = size_ + internal::to_unsigned(end - begin); - if (new_size > capacity_) - grow(new_size); - std::uninitialized_copy(begin, end, - internal::make_ptr(ptr_, capacity_) + size_); - size_ = new_size; -} - -namespace internal { - -// A memory buffer for trivially copyable/constructible types with the first -// SIZE elements stored in the object itself. -template <typename T, std::size_t SIZE, typename Allocator = std::allocator<T> > -class MemoryBuffer : private Allocator, public Buffer<T> { - private: - T data_[SIZE]; - - // Deallocate memory allocated by the buffer. - void deallocate() { - if (this->ptr_ != data_) Allocator::deallocate(this->ptr_, this->capacity_); - } - - protected: - void grow(std::size_t size) FMT_OVERRIDE; - - public: - explicit MemoryBuffer(const Allocator &alloc = Allocator()) - : Allocator(alloc), Buffer<T>(data_, SIZE) {} - ~MemoryBuffer() { deallocate(); } - -#if FMT_USE_RVALUE_REFERENCES - private: - // Move data from other to this buffer. - void move(MemoryBuffer &other) { - Allocator &this_alloc = *this, &other_alloc = other; - this_alloc = std::move(other_alloc); - this->size_ = other.size_; - this->capacity_ = other.capacity_; - if (other.ptr_ == other.data_) { - this->ptr_ = data_; - std::uninitialized_copy(other.data_, other.data_ + this->size_, - make_ptr(data_, this->capacity_)); - } else { - this->ptr_ = other.ptr_; - // Set pointer to the inline array so that delete is not called - // when deallocating. - other.ptr_ = other.data_; - } - } - - public: - MemoryBuffer(MemoryBuffer &&other) { - move(other); - } - - MemoryBuffer &operator=(MemoryBuffer &&other) { - assert(this != &other); - deallocate(); - move(other); - return *this; - } -#endif - - // Returns a copy of the allocator associated with this buffer. - Allocator get_allocator() const { return *this; } -}; - -template <typename T, std::size_t SIZE, typename Allocator> -void MemoryBuffer<T, SIZE, Allocator>::grow(std::size_t size) { - std::size_t new_capacity = this->capacity_ + this->capacity_ / 2; - if (size > new_capacity) - new_capacity = size; - T *new_ptr = this->allocate(new_capacity); - // The following code doesn't throw, so the raw pointer above doesn't leak. - std::uninitialized_copy(this->ptr_, this->ptr_ + this->size_, - make_ptr(new_ptr, new_capacity)); - std::size_t old_capacity = this->capacity_; - T *old_ptr = this->ptr_; - this->capacity_ = new_capacity; - this->ptr_ = new_ptr; - // deallocate may throw (at least in principle), but it doesn't matter since - // the buffer already uses the new storage and will deallocate it in case - // of exception. - if (old_ptr != data_) - Allocator::deallocate(old_ptr, old_capacity); -} - -// A fixed-size buffer. -template <typename Char> -class FixedBuffer : public fmt::Buffer<Char> { - public: - FixedBuffer(Char *array, std::size_t size) : fmt::Buffer<Char>(array, size) {} - - protected: - FMT_API void grow(std::size_t size); -}; - -template <typename Char> -class BasicCharTraits { - public: -#if FMT_SECURE_SCL - typedef stdext::checked_array_iterator<Char*> CharPtr; -#else - typedef Char *CharPtr; -#endif - static Char cast(int value) { return static_cast<Char>(value); } -}; - -template <typename Char> -class CharTraits; - -template <> -class CharTraits<char> : public BasicCharTraits<char> { - private: - // Conversion from wchar_t to char is not allowed. - static char convert(wchar_t); - - public: - static char convert(char value) { return value; } - - // Formats a floating-point number. - template <typename T> - FMT_API static int format_float(char *buffer, std::size_t size, - const char *format, unsigned width, int precision, T value); -}; - -template <> -class CharTraits<wchar_t> : public BasicCharTraits<wchar_t> { - public: - static wchar_t convert(char value) { return value; } - static wchar_t convert(wchar_t value) { return value; } - - template <typename T> - FMT_API static int format_float(wchar_t *buffer, std::size_t size, - const wchar_t *format, unsigned width, int precision, T value); -}; - -// Checks if a number is negative - used to avoid warnings. -template <bool IsSigned> -struct SignChecker { - template <typename T> - static bool is_negative(T value) { return value < 0; } -}; - -template <> -struct SignChecker<false> { - template <typename T> - static bool is_negative(T) { return false; } -}; - -// Returns true if value is negative, false otherwise. -// Same as (value < 0) but doesn't produce warnings if T is an unsigned type. -template <typename T> -inline bool is_negative(T value) { - return SignChecker<std::numeric_limits<T>::is_signed>::is_negative(value); -} - -// Selects uint32_t if FitsIn32Bits is true, uint64_t otherwise. -template <bool FitsIn32Bits> -struct TypeSelector { typedef uint32_t Type; }; - -template <> -struct TypeSelector<false> { typedef uint64_t Type; }; - -template <typename T> -struct IntTraits { - // Smallest of uint32_t and uint64_t that is large enough to represent - // all values of T. - typedef typename - TypeSelector<std::numeric_limits<T>::digits <= 32>::Type MainType; -}; - -FMT_API void report_unknown_type(char code, const char *type); - -// Static data is placed in this class template to allow header-only -// configuration. -template <typename T = void> -struct FMT_API BasicData { - static const uint32_t POWERS_OF_10_32[]; - static const uint64_t POWERS_OF_10_64[]; - static const char DIGITS[]; -}; - -#ifndef FMT_USE_EXTERN_TEMPLATES -// Clang doesn't have a feature check for extern templates so we check -// for variadic templates which were introduced in the same version. -# define FMT_USE_EXTERN_TEMPLATES (__clang__ && FMT_USE_VARIADIC_TEMPLATES) -#endif - -#if FMT_USE_EXTERN_TEMPLATES && !defined(FMT_HEADER_ONLY) -extern template struct BasicData<void>; -#endif - -typedef BasicData<> Data; - -#ifdef FMT_BUILTIN_CLZLL -// Returns the number of decimal digits in n. Leading zeros are not counted -// except for n == 0 in which case count_digits returns 1. -inline unsigned count_digits(uint64_t n) { - // Based on http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog10 - // and the benchmark https://github.com/localvoid/cxx-benchmark-count-digits. - int t = (64 - FMT_BUILTIN_CLZLL(n | 1)) * 1233 >> 12; - return to_unsigned(t) - (n < Data::POWERS_OF_10_64[t]) + 1; -} -#else -// Fallback version of count_digits used when __builtin_clz is not available. -inline unsigned count_digits(uint64_t n) { - unsigned count = 1; - for (;;) { - // Integer division is slow so do it for a group of four digits instead - // of for every digit. The idea comes from the talk by Alexandrescu - // "Three Optimization Tips for C++". See speed-test for a comparison. - if (n < 10) return count; - if (n < 100) return count + 1; - if (n < 1000) return count + 2; - if (n < 10000) return count + 3; - n /= 10000u; - count += 4; - } -} -#endif - -#ifdef FMT_BUILTIN_CLZ -// Optional version of count_digits for better performance on 32-bit platforms. -inline unsigned count_digits(uint32_t n) { - int t = (32 - FMT_BUILTIN_CLZ(n | 1)) * 1233 >> 12; - return to_unsigned(t) - (n < Data::POWERS_OF_10_32[t]) + 1; -} -#endif - -// A functor that doesn't add a thousands separator. -struct NoThousandsSep { - template <typename Char> - void operator()(Char *) {} -}; - -// A functor that adds a thousands separator. -class ThousandsSep { - private: - fmt::StringRef sep_; - - // Index of a decimal digit with the least significant digit having index 0. - unsigned digit_index_; - - public: - explicit ThousandsSep(fmt::StringRef sep) : sep_(sep), digit_index_(0) {} - - template <typename Char> - void operator()(Char *&buffer) { - if (++digit_index_ % 3 != 0) - return; - buffer -= sep_.size(); - std::uninitialized_copy(sep_.data(), sep_.data() + sep_.size(), - internal::make_ptr(buffer, sep_.size())); - } -}; - -// Formats a decimal unsigned integer value writing into buffer. -// thousands_sep is a functor that is called after writing each char to -// add a thousands separator if necessary. -template <typename UInt, typename Char, typename ThousandsSep> -inline void format_decimal(Char *buffer, UInt value, unsigned num_digits, - ThousandsSep thousands_sep) { - buffer += num_digits; - while (value >= 100) { - // Integer division is slow so do it for a group of two digits instead - // of for every digit. The idea comes from the talk by Alexandrescu - // "Three Optimization Tips for C++". See speed-test for a comparison. - unsigned index = static_cast<unsigned>((value % 100) * 2); - value /= 100; - *--buffer = Data::DIGITS[index + 1]; - thousands_sep(buffer); - *--buffer = Data::DIGITS[index]; - thousands_sep(buffer); - } - if (value < 10) { - *--buffer = static_cast<char>('0' + value); - return; - } - unsigned index = static_cast<unsigned>(value * 2); - *--buffer = Data::DIGITS[index + 1]; - thousands_sep(buffer); - *--buffer = Data::DIGITS[index]; -} - -template <typename UInt, typename Char> -inline void format_decimal(Char *buffer, UInt value, unsigned num_digits) { - return format_decimal(buffer, value, num_digits, NoThousandsSep()); -} - -#ifndef _WIN32 -# define FMT_USE_WINDOWS_H 0 -#elif !defined(FMT_USE_WINDOWS_H) -# define FMT_USE_WINDOWS_H 1 -#endif - -// Define FMT_USE_WINDOWS_H to 0 to disable use of windows.h. -// All the functionality that relies on it will be disabled too. -#if FMT_USE_WINDOWS_H -// A converter from UTF-8 to UTF-16. -// It is only provided for Windows since other systems support UTF-8 natively. -class UTF8ToUTF16 { - private: - MemoryBuffer<wchar_t, INLINE_BUFFER_SIZE> buffer_; - - public: - FMT_API explicit UTF8ToUTF16(StringRef s); - operator WStringRef() const { return WStringRef(&buffer_[0], size()); } - size_t size() const { return buffer_.size() - 1; } - const wchar_t *c_str() const { return &buffer_[0]; } - std::wstring str() const { return std::wstring(&buffer_[0], size()); } -}; - -// A converter from UTF-16 to UTF-8. -// It is only provided for Windows since other systems support UTF-8 natively. -class UTF16ToUTF8 { - private: - MemoryBuffer<char, INLINE_BUFFER_SIZE> buffer_; - - public: - UTF16ToUTF8() {} - FMT_API explicit UTF16ToUTF8(WStringRef s); - operator StringRef() const { return StringRef(&buffer_[0], size()); } - size_t size() const { return buffer_.size() - 1; } - const char *c_str() const { return &buffer_[0]; } - std::string str() const { return std::string(&buffer_[0], size()); } - - // Performs conversion returning a system error code instead of - // throwing exception on conversion error. This method may still throw - // in case of memory allocation error. - FMT_API int convert(WStringRef s); -}; - -FMT_API void format_windows_error(fmt::Writer &out, int error_code, - fmt::StringRef message) FMT_NOEXCEPT; -#endif - -FMT_API void format_system_error(fmt::Writer &out, int error_code, - fmt::StringRef message) FMT_NOEXCEPT; - -// A formatting argument value. -struct Value { - template <typename Char> - struct StringValue { - const Char *value; - std::size_t size; - }; - - typedef void (*FormatFunc)( - void *formatter, const void *arg, void *format_str_ptr); - - struct CustomValue { - const void *value; - FormatFunc format; - }; - - union { - int int_value; - unsigned uint_value; - LongLong long_long_value; - ULongLong ulong_long_value; - double double_value; - long double long_double_value; - const void *pointer; - StringValue<char> string; - StringValue<signed char> sstring; - StringValue<unsigned char> ustring; - StringValue<wchar_t> wstring; - CustomValue custom; - }; - - enum Type { - NONE, NAMED_ARG, - // Integer types should go first, - INT, UINT, LONG_LONG, ULONG_LONG, BOOL, CHAR, LAST_INTEGER_TYPE = CHAR, - // followed by floating-point types. - DOUBLE, LONG_DOUBLE, LAST_NUMERIC_TYPE = LONG_DOUBLE, - CSTRING, STRING, WSTRING, POINTER, CUSTOM - }; -}; - -// A formatting argument. It is a trivially copyable/constructible type to -// allow storage in internal::MemoryBuffer. -struct Arg : Value { - Type type; -}; - -template <typename Char> -struct NamedArg; - -template <typename T = void> -struct Null {}; - -// A helper class template to enable or disable overloads taking wide -// characters and strings in MakeValue. -template <typename T, typename Char> -struct WCharHelper { - typedef Null<T> Supported; - typedef T Unsupported; -}; - -template <typename T> -struct WCharHelper<T, wchar_t> { - typedef T Supported; - typedef Null<T> Unsupported; -}; - -typedef char Yes[1]; -typedef char No[2]; - -template <typename T> -T &get(); - -// These are non-members to workaround an overload resolution bug in bcc32. -Yes &convert(fmt::ULongLong); -No &convert(...); - -template<typename T, bool ENABLE_CONVERSION> -struct ConvertToIntImpl { - enum { value = ENABLE_CONVERSION }; -}; - -template<typename T, bool ENABLE_CONVERSION> -struct ConvertToIntImpl2 { - enum { value = false }; -}; - -template<typename T> -struct ConvertToIntImpl2<T, true> { - enum { - // Don't convert numeric types. - value = ConvertToIntImpl<T, !std::numeric_limits<T>::is_specialized>::value - }; -}; - -template<typename T> -struct ConvertToInt { - enum { enable_conversion = sizeof(convert(get<T>())) == sizeof(Yes) }; - enum { value = ConvertToIntImpl2<T, enable_conversion>::value }; -}; - -#define FMT_DISABLE_CONVERSION_TO_INT(Type) \ - template <> \ - struct ConvertToInt<Type> { enum { value = 0 }; } - -// Silence warnings about convering float to int. -FMT_DISABLE_CONVERSION_TO_INT(float); -FMT_DISABLE_CONVERSION_TO_INT(double); -FMT_DISABLE_CONVERSION_TO_INT(long double); - -template<bool B, class T = void> -struct EnableIf {}; - -template<class T> -struct EnableIf<true, T> { typedef T type; }; - -template<bool B, class T, class F> -struct Conditional { typedef T type; }; - -template<class T, class F> -struct Conditional<false, T, F> { typedef F type; }; - -// For bcc32 which doesn't understand ! in template arguments. -template<bool> -struct Not { enum { value = 0 }; }; - -template<> -struct Not<false> { enum { value = 1 }; }; - -template<typename T, T> struct LConvCheck { - LConvCheck(int) {} -}; - -// Returns the thousands separator for the current locale. -// We check if ``lconv`` contains ``thousands_sep`` because on Android -// ``lconv`` is stubbed as an empty struct. -template <typename LConv> -inline StringRef thousands_sep( - LConv *lc, LConvCheck<char *LConv::*, &LConv::thousands_sep> = 0) { - return lc->thousands_sep; -} - -inline fmt::StringRef thousands_sep(...) { return ""; } - -// Makes an Arg object from any type. -template <typename Formatter> -class MakeValue : public Arg { - public: - typedef typename Formatter::Char Char; - - private: - // The following two methods are private to disallow formatting of - // arbitrary pointers. If you want to output a pointer cast it to - // "void *" or "const void *". In particular, this forbids formatting - // of "[const] volatile char *" which is printed as bool by iostreams. - // Do not implement! - template <typename T> - MakeValue(const T *value); - template <typename T> - MakeValue(T *value); - - // The following methods are private to disallow formatting of wide - // characters and strings into narrow strings as in - // fmt::format("{}", L"test"); - // To fix this, use a wide format string: fmt::format(L"{}", L"test"). -#if !FMT_MSC_VER || defined(_NATIVE_WCHAR_T_DEFINED) - MakeValue(typename WCharHelper<wchar_t, Char>::Unsupported); -#endif - MakeValue(typename WCharHelper<wchar_t *, Char>::Unsupported); - MakeValue(typename WCharHelper<const wchar_t *, Char>::Unsupported); - MakeValue(typename WCharHelper<const std::wstring &, Char>::Unsupported); - MakeValue(typename WCharHelper<WStringRef, Char>::Unsupported); - - void set_string(StringRef str) { - string.value = str.data(); - string.size = str.size(); - } - - void set_string(WStringRef str) { - wstring.value = str.data(); - wstring.size = str.size(); - } - - // Formats an argument of a custom type, such as a user-defined class. - template <typename T> - static void format_custom_arg( - void *formatter, const void *arg, void *format_str_ptr) { - format(*static_cast<Formatter*>(formatter), - *static_cast<const Char**>(format_str_ptr), - *static_cast<const T*>(arg)); - } - - public: - MakeValue() {} - -#define FMT_MAKE_VALUE_(Type, field, TYPE, rhs) \ - MakeValue(Type value) { field = rhs; } \ - static uint64_t type(Type) { return Arg::TYPE; } - -#define FMT_MAKE_VALUE(Type, field, TYPE) \ - FMT_MAKE_VALUE_(Type, field, TYPE, value) - - FMT_MAKE_VALUE(bool, int_value, BOOL) - FMT_MAKE_VALUE(short, int_value, INT) - FMT_MAKE_VALUE(unsigned short, uint_value, UINT) - FMT_MAKE_VALUE(int, int_value, INT) - FMT_MAKE_VALUE(unsigned, uint_value, UINT) - - MakeValue(long value) { - // To minimize the number of types we need to deal with, long is - // translated either to int or to long long depending on its size. - if (const_check(sizeof(long) == sizeof(int))) - int_value = static_cast<int>(value); - else - long_long_value = value; - } - static uint64_t type(long) { - return sizeof(long) == sizeof(int) ? Arg::INT : Arg::LONG_LONG; - } - - MakeValue(unsigned long value) { - if (const_check(sizeof(unsigned long) == sizeof(unsigned))) - uint_value = static_cast<unsigned>(value); - else - ulong_long_value = value; - } - static uint64_t type(unsigned long) { - return sizeof(unsigned long) == sizeof(unsigned) ? - Arg::UINT : Arg::ULONG_LONG; - } - - FMT_MAKE_VALUE(LongLong, long_long_value, LONG_LONG) - FMT_MAKE_VALUE(ULongLong, ulong_long_value, ULONG_LONG) - FMT_MAKE_VALUE(float, double_value, DOUBLE) - FMT_MAKE_VALUE(double, double_value, DOUBLE) - FMT_MAKE_VALUE(long double, long_double_value, LONG_DOUBLE) - FMT_MAKE_VALUE(signed char, int_value, INT) - FMT_MAKE_VALUE(unsigned char, uint_value, UINT) - FMT_MAKE_VALUE(char, int_value, CHAR) - -#if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED) - MakeValue(typename WCharHelper<wchar_t, Char>::Supported value) { - int_value = value; - } - static uint64_t type(wchar_t) { return Arg::CHAR; } -#endif - -#define FMT_MAKE_STR_VALUE(Type, TYPE) \ - MakeValue(Type value) { set_string(value); } \ - static uint64_t type(Type) { return Arg::TYPE; } - - FMT_MAKE_VALUE(char *, string.value, CSTRING) - FMT_MAKE_VALUE(const char *, string.value, CSTRING) - FMT_MAKE_VALUE(signed char *, sstring.value, CSTRING) - FMT_MAKE_VALUE(const signed char *, sstring.value, CSTRING) - FMT_MAKE_VALUE(unsigned char *, ustring.value, CSTRING) - FMT_MAKE_VALUE(const unsigned char *, ustring.value, CSTRING) - FMT_MAKE_STR_VALUE(const std::string &, STRING) - FMT_MAKE_STR_VALUE(StringRef, STRING) - FMT_MAKE_VALUE_(CStringRef, string.value, CSTRING, value.c_str()) - -#define FMT_MAKE_WSTR_VALUE(Type, TYPE) \ - MakeValue(typename WCharHelper<Type, Char>::Supported value) { \ - set_string(value); \ - } \ - static uint64_t type(Type) { return Arg::TYPE; } - - FMT_MAKE_WSTR_VALUE(wchar_t *, WSTRING) - FMT_MAKE_WSTR_VALUE(const wchar_t *, WSTRING) - FMT_MAKE_WSTR_VALUE(const std::wstring &, WSTRING) - FMT_MAKE_WSTR_VALUE(WStringRef, WSTRING) - - FMT_MAKE_VALUE(void *, pointer, POINTER) - FMT_MAKE_VALUE(const void *, pointer, POINTER) - - template <typename T> - MakeValue(const T &value, - typename EnableIf<Not< - ConvertToInt<T>::value>::value, int>::type = 0) { - custom.value = &value; - custom.format = &format_custom_arg<T>; - } - - template <typename T> - MakeValue(const T &value, - typename EnableIf<ConvertToInt<T>::value, int>::type = 0) { - int_value = value; - } - - template <typename T> - static uint64_t type(const T &) { - return ConvertToInt<T>::value ? Arg::INT : Arg::CUSTOM; - } - - // Additional template param `Char_` is needed here because make_type always - // uses char. - template <typename Char_> - MakeValue(const NamedArg<Char_> &value) { pointer = &value; } - - template <typename Char_> - static uint64_t type(const NamedArg<Char_> &) { return Arg::NAMED_ARG; } -}; - -template <typename Formatter> -class MakeArg : public Arg { -public: - MakeArg() { - type = Arg::NONE; - } - - template <typename T> - MakeArg(const T &value) - : Arg(MakeValue<Formatter>(value)) { - type = static_cast<Arg::Type>(MakeValue<Formatter>::type(value)); - } -}; - -template <typename Char> -struct NamedArg : Arg { - BasicStringRef<Char> name; - - template <typename T> - NamedArg(BasicStringRef<Char> argname, const T &value) - : Arg(MakeArg< BasicFormatter<Char> >(value)), name(argname) {} -}; - -class RuntimeError : public std::runtime_error { - protected: - RuntimeError() : std::runtime_error("") {} - ~RuntimeError() throw(); -}; - -template <typename Char> -class PrintfArgFormatter; - -template <typename Char> -class ArgMap; -} // namespace internal - -/** An argument list. */ -class ArgList { - private: - // To reduce compiled code size per formatting function call, types of first - // MAX_PACKED_ARGS arguments are passed in the types_ field. - uint64_t types_; - union { - // If the number of arguments is less than MAX_PACKED_ARGS, the argument - // values are stored in values_, otherwise they are stored in args_. - // This is done to reduce compiled code size as storing larger objects - // may require more code (at least on x86-64) even if the same amount of - // data is actually copied to stack. It saves ~10% on the bloat test. - const internal::Value *values_; - const internal::Arg *args_; - }; - - internal::Arg::Type type(unsigned index) const { - unsigned shift = index * 4; - uint64_t mask = 0xf; - return static_cast<internal::Arg::Type>( - (types_ & (mask << shift)) >> shift); - } - - template <typename Char> - friend class internal::ArgMap; - - public: - // Maximum number of arguments with packed types. - enum { MAX_PACKED_ARGS = 16 }; - - ArgList() : types_(0) {} - - ArgList(ULongLong types, const internal::Value *values) - : types_(types), values_(values) {} - ArgList(ULongLong types, const internal::Arg *args) - : types_(types), args_(args) {} - - /** Returns the argument at specified index. */ - internal::Arg operator[](unsigned index) const { - using internal::Arg; - Arg arg; - bool use_values = type(MAX_PACKED_ARGS - 1) == Arg::NONE; - if (index < MAX_PACKED_ARGS) { - Arg::Type arg_type = type(index); - internal::Value &val = arg; - if (arg_type != Arg::NONE) - val = use_values ? values_[index] : args_[index]; - arg.type = arg_type; - return arg; - } - if (use_values) { - // The index is greater than the number of arguments that can be stored - // in values, so return a "none" argument. - arg.type = Arg::NONE; - return arg; - } - for (unsigned i = MAX_PACKED_ARGS; i <= index; ++i) { - if (args_[i].type == Arg::NONE) - return args_[i]; - } - return args_[index]; - } -}; - -#define FMT_DISPATCH(call) static_cast<Impl*>(this)->call - -/** - \rst - An argument visitor based on the `curiously recurring template pattern - <http://en.wikipedia.org/wiki/Curiously_recurring_template_pattern>`_. - - To use `~fmt::ArgVisitor` define a subclass that implements some or all of the - visit methods with the same signatures as the methods in `~fmt::ArgVisitor`, - for example, `~fmt::ArgVisitor::visit_int()`. - Pass the subclass as the *Impl* template parameter. Then calling - `~fmt::ArgVisitor::visit` for some argument will dispatch to a visit method - specific to the argument type. For example, if the argument type is - ``double`` then the `~fmt::ArgVisitor::visit_double()` method of a subclass - will be called. If the subclass doesn't contain a method with this signature, - then a corresponding method of `~fmt::ArgVisitor` will be called. - - **Example**:: - - class MyArgVisitor : public fmt::ArgVisitor<MyArgVisitor, void> { - public: - void visit_int(int value) { fmt::print("{}", value); } - void visit_double(double value) { fmt::print("{}", value ); } - }; - \endrst - */ -template <typename Impl, typename Result> -class ArgVisitor { - private: - typedef internal::Arg Arg; - - public: - void report_unhandled_arg() {} - - Result visit_unhandled_arg() { - FMT_DISPATCH(report_unhandled_arg()); - return Result(); - } - - /** Visits an ``int`` argument. **/ - Result visit_int(int value) { - return FMT_DISPATCH(visit_any_int(value)); - } - - /** Visits a ``long long`` argument. **/ - Result visit_long_long(LongLong value) { - return FMT_DISPATCH(visit_any_int(value)); - } - - /** Visits an ``unsigned`` argument. **/ - Result visit_uint(unsigned value) { - return FMT_DISPATCH(visit_any_int(value)); - } - - /** Visits an ``unsigned long long`` argument. **/ - Result visit_ulong_long(ULongLong value) { - return FMT_DISPATCH(visit_any_int(value)); - } - - /** Visits a ``bool`` argument. **/ - Result visit_bool(bool value) { - return FMT_DISPATCH(visit_any_int(value)); - } - - /** Visits a ``char`` or ``wchar_t`` argument. **/ - Result visit_char(int value) { - return FMT_DISPATCH(visit_any_int(value)); - } - - /** Visits an argument of any integral type. **/ - template <typename T> - Result visit_any_int(T) { - return FMT_DISPATCH(visit_unhandled_arg()); - } - - /** Visits a ``double`` argument. **/ - Result visit_double(double value) { - return FMT_DISPATCH(visit_any_double(value)); - } - - /** Visits a ``long double`` argument. **/ - Result visit_long_double(long double value) { - return FMT_DISPATCH(visit_any_double(value)); - } - - /** Visits a ``double`` or ``long double`` argument. **/ - template <typename T> - Result visit_any_double(T) { - return FMT_DISPATCH(visit_unhandled_arg()); - } - - /** Visits a null-terminated C string (``const char *``) argument. **/ - Result visit_cstring(const char *) { - return FMT_DISPATCH(visit_unhandled_arg()); - } - - /** Visits a string argument. **/ - Result visit_string(Arg::StringValue<char>) { - return FMT_DISPATCH(visit_unhandled_arg()); - } - - /** Visits a wide string argument. **/ - Result visit_wstring(Arg::StringValue<wchar_t>) { - return FMT_DISPATCH(visit_unhandled_arg()); - } - - /** Visits a pointer argument. **/ - Result visit_pointer(const void *) { - return FMT_DISPATCH(visit_unhandled_arg()); - } - - /** Visits an argument of a custom (user-defined) type. **/ - Result visit_custom(Arg::CustomValue) { - return FMT_DISPATCH(visit_unhandled_arg()); - } - - /** - \rst - Visits an argument dispatching to the appropriate visit method based on - the argument type. For example, if the argument type is ``double`` then - the `~fmt::ArgVisitor::visit_double()` method of the *Impl* class will be - called. - \endrst - */ - Result visit(const Arg &arg) { - switch (arg.type) { - case Arg::NONE: - case Arg::NAMED_ARG: - FMT_ASSERT(false, "invalid argument type"); - break; - case Arg::INT: - return FMT_DISPATCH(visit_int(arg.int_value)); - case Arg::UINT: - return FMT_DISPATCH(visit_uint(arg.uint_value)); - case Arg::LONG_LONG: - return FMT_DISPATCH(visit_long_long(arg.long_long_value)); - case Arg::ULONG_LONG: - return FMT_DISPATCH(visit_ulong_long(arg.ulong_long_value)); - case Arg::BOOL: - return FMT_DISPATCH(visit_bool(arg.int_value != 0)); - case Arg::CHAR: - return FMT_DISPATCH(visit_char(arg.int_value)); - case Arg::DOUBLE: - return FMT_DISPATCH(visit_double(arg.double_value)); - case Arg::LONG_DOUBLE: - return FMT_DISPATCH(visit_long_double(arg.long_double_value)); - case Arg::CSTRING: - return FMT_DISPATCH(visit_cstring(arg.string.value)); - case Arg::STRING: - return FMT_DISPATCH(visit_string(arg.string)); - case Arg::WSTRING: - return FMT_DISPATCH(visit_wstring(arg.wstring)); - case Arg::POINTER: - return FMT_DISPATCH(visit_pointer(arg.pointer)); - case Arg::CUSTOM: - return FMT_DISPATCH(visit_custom(arg.custom)); - } - return Result(); - } -}; - -enum Alignment { - ALIGN_DEFAULT, ALIGN_LEFT, ALIGN_RIGHT, ALIGN_CENTER, ALIGN_NUMERIC -}; - -// Flags. -enum { - SIGN_FLAG = 1, PLUS_FLAG = 2, MINUS_FLAG = 4, HASH_FLAG = 8, - CHAR_FLAG = 0x10 // Argument has char type - used in error reporting. -}; - -// An empty format specifier. -struct EmptySpec {}; - -// A type specifier. -template <char TYPE> -struct TypeSpec : EmptySpec { - Alignment align() const { return ALIGN_DEFAULT; } - unsigned width() const { return 0; } - int precision() const { return -1; } - bool flag(unsigned) const { return false; } - char type() const { return TYPE; } - char fill() const { return ' '; } -}; - -// A width specifier. -struct WidthSpec { - unsigned width_; - // Fill is always wchar_t and cast to char if necessary to avoid having - // two specialization of WidthSpec and its subclasses. - wchar_t fill_; - - WidthSpec(unsigned width, wchar_t fill) : width_(width), fill_(fill) {} - - unsigned width() const { return width_; } - wchar_t fill() const { return fill_; } -}; - -// An alignment specifier. -struct AlignSpec : WidthSpec { - Alignment align_; - - AlignSpec(unsigned width, wchar_t fill, Alignment align = ALIGN_DEFAULT) - : WidthSpec(width, fill), align_(align) {} - - Alignment align() const { return align_; } - - int precision() const { return -1; } -}; - -// An alignment and type specifier. -template <char TYPE> -struct AlignTypeSpec : AlignSpec { - AlignTypeSpec(unsigned width, wchar_t fill) : AlignSpec(width, fill) {} - - bool flag(unsigned) const { return false; } - char type() const { return TYPE; } -}; - -// A full format specifier. -struct FormatSpec : AlignSpec { - unsigned flags_; - int precision_; - char type_; - - FormatSpec( - unsigned width = 0, char type = 0, wchar_t fill = ' ') - : AlignSpec(width, fill), flags_(0), precision_(-1), type_(type) {} - - bool flag(unsigned f) const { return (flags_ & f) != 0; } - int precision() const { return precision_; } - char type() const { return type_; } -}; - -// An integer format specifier. -template <typename T, typename SpecT = TypeSpec<0>, typename Char = char> -class IntFormatSpec : public SpecT { - private: - T value_; - - public: - IntFormatSpec(T val, const SpecT &spec = SpecT()) - : SpecT(spec), value_(val) {} - - T value() const { return value_; } -}; - -// A string format specifier. -template <typename Char> -class StrFormatSpec : public AlignSpec { - private: - const Char *str_; - - public: - template <typename FillChar> - StrFormatSpec(const Char *str, unsigned width, FillChar fill) - : AlignSpec(width, fill), str_(str) { - internal::CharTraits<Char>::convert(FillChar()); - } - - const Char *str() const { return str_; } -}; - -/** - Returns an integer format specifier to format the value in base 2. - */ -IntFormatSpec<int, TypeSpec<'b'> > bin(int value); - -/** - Returns an integer format specifier to format the value in base 8. - */ -IntFormatSpec<int, TypeSpec<'o'> > oct(int value); - -/** - Returns an integer format specifier to format the value in base 16 using - lower-case letters for the digits above 9. - */ -IntFormatSpec<int, TypeSpec<'x'> > hex(int value); - -/** - Returns an integer formatter format specifier to format in base 16 using - upper-case letters for the digits above 9. - */ -IntFormatSpec<int, TypeSpec<'X'> > hexu(int value); - -/** - \rst - Returns an integer format specifier to pad the formatted argument with the - fill character to the specified width using the default (right) numeric - alignment. - - **Example**:: - - MemoryWriter out; - out << pad(hex(0xcafe), 8, '0'); - // out.str() == "0000cafe" - - \endrst - */ -template <char TYPE_CODE, typename Char> -IntFormatSpec<int, AlignTypeSpec<TYPE_CODE>, Char> pad( - int value, unsigned width, Char fill = ' '); - -#define FMT_DEFINE_INT_FORMATTERS(TYPE) \ -inline IntFormatSpec<TYPE, TypeSpec<'b'> > bin(TYPE value) { \ - return IntFormatSpec<TYPE, TypeSpec<'b'> >(value, TypeSpec<'b'>()); \ -} \ - \ -inline IntFormatSpec<TYPE, TypeSpec<'o'> > oct(TYPE value) { \ - return IntFormatSpec<TYPE, TypeSpec<'o'> >(value, TypeSpec<'o'>()); \ -} \ - \ -inline IntFormatSpec<TYPE, TypeSpec<'x'> > hex(TYPE value) { \ - return IntFormatSpec<TYPE, TypeSpec<'x'> >(value, TypeSpec<'x'>()); \ -} \ - \ -inline IntFormatSpec<TYPE, TypeSpec<'X'> > hexu(TYPE value) { \ - return IntFormatSpec<TYPE, TypeSpec<'X'> >(value, TypeSpec<'X'>()); \ -} \ - \ -template <char TYPE_CODE> \ -inline IntFormatSpec<TYPE, AlignTypeSpec<TYPE_CODE> > pad( \ - IntFormatSpec<TYPE, TypeSpec<TYPE_CODE> > f, unsigned width) { \ - return IntFormatSpec<TYPE, AlignTypeSpec<TYPE_CODE> >( \ - f.value(), AlignTypeSpec<TYPE_CODE>(width, ' ')); \ -} \ - \ -/* For compatibility with older compilers we provide two overloads for pad, */ \ -/* one that takes a fill character and one that doesn't. In the future this */ \ -/* can be replaced with one overload making the template argument Char */ \ -/* default to char (C++11). */ \ -template <char TYPE_CODE, typename Char> \ -inline IntFormatSpec<TYPE, AlignTypeSpec<TYPE_CODE>, Char> pad( \ - IntFormatSpec<TYPE, TypeSpec<TYPE_CODE>, Char> f, \ - unsigned width, Char fill) { \ - return IntFormatSpec<TYPE, AlignTypeSpec<TYPE_CODE>, Char>( \ - f.value(), AlignTypeSpec<TYPE_CODE>(width, fill)); \ -} \ - \ -inline IntFormatSpec<TYPE, AlignTypeSpec<0> > pad( \ - TYPE value, unsigned width) { \ - return IntFormatSpec<TYPE, AlignTypeSpec<0> >( \ - value, AlignTypeSpec<0>(width, ' ')); \ -} \ - \ -template <typename Char> \ -inline IntFormatSpec<TYPE, AlignTypeSpec<0>, Char> pad( \ - TYPE value, unsigned width, Char fill) { \ - return IntFormatSpec<TYPE, AlignTypeSpec<0>, Char>( \ - value, AlignTypeSpec<0>(width, fill)); \ -} - -FMT_DEFINE_INT_FORMATTERS(int) -FMT_DEFINE_INT_FORMATTERS(long) -FMT_DEFINE_INT_FORMATTERS(unsigned) -FMT_DEFINE_INT_FORMATTERS(unsigned long) -FMT_DEFINE_INT_FORMATTERS(LongLong) -FMT_DEFINE_INT_FORMATTERS(ULongLong) - -/** - \rst - Returns a string formatter that pads the formatted argument with the fill - character to the specified width using the default (left) string alignment. - - **Example**:: - - std::string s = str(MemoryWriter() << pad("abc", 8)); - // s == "abc " - - \endrst - */ -template <typename Char> -inline StrFormatSpec<Char> pad( - const Char *str, unsigned width, Char fill = ' ') { - return StrFormatSpec<Char>(str, width, fill); -} - -inline StrFormatSpec<wchar_t> pad( - const wchar_t *str, unsigned width, char fill = ' ') { - return StrFormatSpec<wchar_t>(str, width, fill); -} - -namespace internal { - -template <typename Char> -class ArgMap { - private: - typedef std::vector< - std::pair<fmt::BasicStringRef<Char>, internal::Arg> > MapType; - typedef typename MapType::value_type Pair; - - MapType map_; - - public: - FMT_API void init(const ArgList &args); - - const internal::Arg* find(const fmt::BasicStringRef<Char> &name) const { - // The list is unsorted, so just return the first matching name. - for (typename MapType::const_iterator it = map_.begin(), end = map_.end(); - it != end; ++it) { - if (it->first == name) - return &it->second; - } - return 0; - } -}; - -template <typename Impl, typename Char> -class ArgFormatterBase : public ArgVisitor<Impl, void> { - private: - BasicWriter<Char> &writer_; - FormatSpec &spec_; - - FMT_DISALLOW_COPY_AND_ASSIGN(ArgFormatterBase); - - void write_pointer(const void *p) { - spec_.flags_ = HASH_FLAG; - spec_.type_ = 'x'; - writer_.write_int(reinterpret_cast<uintptr_t>(p), spec_); - } - - protected: - BasicWriter<Char> &writer() { return writer_; } - FormatSpec &spec() { return spec_; } - - void write(bool value) { - const char *str_value = value ? "true" : "false"; - Arg::StringValue<char> str = { str_value, std::strlen(str_value) }; - writer_.write_str(str, spec_); - } - - void write(const char *value) { - Arg::StringValue<char> str = {value, value != 0 ? std::strlen(value) : 0}; - writer_.write_str(str, spec_); - } - - public: - ArgFormatterBase(BasicWriter<Char> &w, FormatSpec &s) - : writer_(w), spec_(s) {} - - template <typename T> - void visit_any_int(T value) { writer_.write_int(value, spec_); } - - template <typename T> - void visit_any_double(T value) { writer_.write_double(value, spec_); } - - void visit_bool(bool value) { - if (spec_.type_) - return visit_any_int(value); - write(value); - } - - void visit_char(int value) { - if (spec_.type_ && spec_.type_ != 'c') { - spec_.flags_ |= CHAR_FLAG; - writer_.write_int(value, spec_); - return; - } - if (spec_.align_ == ALIGN_NUMERIC || spec_.flags_ != 0) - FMT_THROW(FormatError("invalid format specifier for char")); - typedef typename BasicWriter<Char>::CharPtr CharPtr; - Char fill = internal::CharTraits<Char>::cast(spec_.fill()); - CharPtr out = CharPtr(); - const unsigned CHAR_SIZE = 1; - if (spec_.width_ > CHAR_SIZE) { - out = writer_.grow_buffer(spec_.width_); - if (spec_.align_ == ALIGN_RIGHT) { - std::uninitialized_fill_n(out, spec_.width_ - CHAR_SIZE, fill); - out += spec_.width_ - CHAR_SIZE; - } else if (spec_.align_ == ALIGN_CENTER) { - out = writer_.fill_padding(out, spec_.width_, - internal::const_check(CHAR_SIZE), fill); - } else { - std::uninitialized_fill_n(out + CHAR_SIZE, - spec_.width_ - CHAR_SIZE, fill); - } - } else { - out = writer_.grow_buffer(CHAR_SIZE); - } - *out = internal::CharTraits<Char>::cast(value); - } - - void visit_cstring(const char *value) { - if (spec_.type_ == 'p') - return write_pointer(value); - write(value); - } - - void visit_string(Arg::StringValue<char> value) { - writer_.write_str(value, spec_); - } - - using ArgVisitor<Impl, void>::visit_wstring; - - void visit_wstring(Arg::StringValue<Char> value) { - writer_.write_str(value, spec_); - } - - void visit_pointer(const void *value) { - if (spec_.type_ && spec_.type_ != 'p') - report_unknown_type(spec_.type_, "pointer"); - write_pointer(value); - } -}; - -class FormatterBase { - private: - ArgList args_; - int next_arg_index_; - - // Returns the argument with specified index. - FMT_API Arg do_get_arg(unsigned arg_index, const char *&error); - - protected: - const ArgList &args() const { return args_; } - - explicit FormatterBase(const ArgList &args) { - args_ = args; - next_arg_index_ = 0; - } - - // Returns the next argument. - Arg next_arg(const char *&error) { - if (next_arg_index_ >= 0) - return do_get_arg(internal::to_unsigned(next_arg_index_++), error); - error = "cannot switch from manual to automatic argument indexing"; - return Arg(); - } - - // Checks if manual indexing is used and returns the argument with - // specified index. - Arg get_arg(unsigned arg_index, const char *&error) { - return check_no_auto_index(error) ? do_get_arg(arg_index, error) : Arg(); - } - - bool check_no_auto_index(const char *&error) { - if (next_arg_index_ > 0) { - error = "cannot switch from automatic to manual argument indexing"; - return false; - } - next_arg_index_ = -1; - return true; - } - - template <typename Char> - void write(BasicWriter<Char> &w, const Char *start, const Char *end) { - if (start != end) - w << BasicStringRef<Char>(start, internal::to_unsigned(end - start)); - } -}; - -// A printf formatter. -template <typename Char> -class PrintfFormatter : private FormatterBase { - private: - void parse_flags(FormatSpec &spec, const Char *&s); - - // Returns the argument with specified index or, if arg_index is equal - // to the maximum unsigned value, the next argument. - Arg get_arg(const Char *s, - unsigned arg_index = (std::numeric_limits<unsigned>::max)()); - - // Parses argument index, flags and width and returns the argument index. - unsigned parse_header(const Char *&s, FormatSpec &spec); - - public: - explicit PrintfFormatter(const ArgList &args) : FormatterBase(args) {} - FMT_API void format(BasicWriter<Char> &writer, - BasicCStringRef<Char> format_str); -}; -} // namespace internal - -/** - \rst - An argument formatter based on the `curiously recurring template pattern - <http://en.wikipedia.org/wiki/Curiously_recurring_template_pattern>`_. - - To use `~fmt::BasicArgFormatter` define a subclass that implements some or - all of the visit methods with the same signatures as the methods in - `~fmt::ArgVisitor`, for example, `~fmt::ArgVisitor::visit_int()`. - Pass the subclass as the *Impl* template parameter. When a formatting - function processes an argument, it will dispatch to a visit method - specific to the argument type. For example, if the argument type is - ``double`` then the `~fmt::ArgVisitor::visit_double()` method of a subclass - will be called. If the subclass doesn't contain a method with this signature, - then a corresponding method of `~fmt::BasicArgFormatter` or its superclass - will be called. - \endrst - */ -template <typename Impl, typename Char> -class BasicArgFormatter : public internal::ArgFormatterBase<Impl, Char> { - private: - BasicFormatter<Char, Impl> &formatter_; - const Char *format_; - - public: - /** - \rst - Constructs an argument formatter object. - *formatter* is a reference to the main formatter object, *spec* contains - format specifier information for standard argument types, and *fmt* points - to the part of the format string being parsed for custom argument types. - \endrst - */ - BasicArgFormatter(BasicFormatter<Char, Impl> &formatter, - FormatSpec &spec, const Char *fmt) - : internal::ArgFormatterBase<Impl, Char>(formatter.writer(), spec), - formatter_(formatter), format_(fmt) {} - - /** Formats argument of a custom (user-defined) type. */ - void visit_custom(internal::Arg::CustomValue c) { - c.format(&formatter_, c.value, &format_); - } -}; - -/** The default argument formatter. */ -template <typename Char> -class ArgFormatter : public BasicArgFormatter<ArgFormatter<Char>, Char> { - public: - /** Constructs an argument formatter object. */ - ArgFormatter(BasicFormatter<Char> &formatter, - FormatSpec &spec, const Char *fmt) - : BasicArgFormatter<ArgFormatter<Char>, Char>(formatter, spec, fmt) {} -}; - -/** This template formats data and writes the output to a writer. */ -template <typename CharType, typename ArgFormatter> -class BasicFormatter : private internal::FormatterBase { - public: - /** The character type for the output. */ - typedef CharType Char; - - private: - BasicWriter<Char> &writer_; - internal::ArgMap<Char> map_; - - FMT_DISALLOW_COPY_AND_ASSIGN(BasicFormatter); - - using internal::FormatterBase::get_arg; - - // Checks if manual indexing is used and returns the argument with - // specified name. - internal::Arg get_arg(BasicStringRef<Char> arg_name, const char *&error); - - // Parses argument index and returns corresponding argument. - internal::Arg parse_arg_index(const Char *&s); - - // Parses argument name and returns corresponding argument. - internal::Arg parse_arg_name(const Char *&s); - - public: - /** - \rst - Constructs a ``BasicFormatter`` object. References to the arguments and - the writer are stored in the formatter object so make sure they have - appropriate lifetimes. - \endrst - */ - BasicFormatter(const ArgList &args, BasicWriter<Char> &w) - : internal::FormatterBase(args), writer_(w) {} - - /** Returns a reference to the writer associated with this formatter. */ - BasicWriter<Char> &writer() { return writer_; } - - /** Formats stored arguments and writes the output to the writer. */ - void format(BasicCStringRef<Char> format_str); - - // Formats a single argument and advances format_str, a format string pointer. - const Char *format(const Char *&format_str, const internal::Arg &arg); -}; - -// Generates a comma-separated list with results of applying f to -// numbers 0..n-1. -# define FMT_GEN(n, f) FMT_GEN##n(f) -# define FMT_GEN1(f) f(0) -# define FMT_GEN2(f) FMT_GEN1(f), f(1) -# define FMT_GEN3(f) FMT_GEN2(f), f(2) -# define FMT_GEN4(f) FMT_GEN3(f), f(3) -# define FMT_GEN5(f) FMT_GEN4(f), f(4) -# define FMT_GEN6(f) FMT_GEN5(f), f(5) -# define FMT_GEN7(f) FMT_GEN6(f), f(6) -# define FMT_GEN8(f) FMT_GEN7(f), f(7) -# define FMT_GEN9(f) FMT_GEN8(f), f(8) -# define FMT_GEN10(f) FMT_GEN9(f), f(9) -# define FMT_GEN11(f) FMT_GEN10(f), f(10) -# define FMT_GEN12(f) FMT_GEN11(f), f(11) -# define FMT_GEN13(f) FMT_GEN12(f), f(12) -# define FMT_GEN14(f) FMT_GEN13(f), f(13) -# define FMT_GEN15(f) FMT_GEN14(f), f(14) - -namespace internal { -inline uint64_t make_type() { return 0; } - -template <typename T> -inline uint64_t make_type(const T &arg) { - return MakeValue< BasicFormatter<char> >::type(arg); -} - -template <unsigned N, bool/*IsPacked*/= (N < ArgList::MAX_PACKED_ARGS)> -struct ArgArray; - -template <unsigned N> -struct ArgArray<N, true/*IsPacked*/> { - typedef Value Type[N > 0 ? N : 1]; - - template <typename Formatter, typename T> - static Value make(const T &value) { -#ifdef __clang__ - Value result = MakeValue<Formatter>(value); - // Workaround a bug in Apple LLVM version 4.2 (clang-425.0.28) of clang: - // https://github.com/fmtlib/fmt/issues/276 - (void)result.custom.format; - return result; -#else - return MakeValue<Formatter>(value); -#endif - } -}; - -template <unsigned N> -struct ArgArray<N, false/*IsPacked*/> { - typedef Arg Type[N + 1]; // +1 for the list end Arg::NONE - - template <typename Formatter, typename T> - static Arg make(const T &value) { return MakeArg<Formatter>(value); } -}; - -#if FMT_USE_VARIADIC_TEMPLATES -template <typename Arg, typename... Args> -inline uint64_t make_type(const Arg &first, const Args & ... tail) { - return make_type(first) | (make_type(tail...) << 4); -} - -#else - -struct ArgType { - uint64_t type; - - ArgType() : type(0) {} - - template <typename T> - ArgType(const T &arg) : type(make_type(arg)) {} -}; - -# define FMT_ARG_TYPE_DEFAULT(n) ArgType t##n = ArgType() - -inline uint64_t make_type(FMT_GEN15(FMT_ARG_TYPE_DEFAULT)) { - return t0.type | (t1.type << 4) | (t2.type << 8) | (t3.type << 12) | - (t4.type << 16) | (t5.type << 20) | (t6.type << 24) | (t7.type << 28) | - (t8.type << 32) | (t9.type << 36) | (t10.type << 40) | (t11.type << 44) | - (t12.type << 48) | (t13.type << 52) | (t14.type << 56); -} -#endif -} // namespace internal - -# define FMT_MAKE_TEMPLATE_ARG(n) typename T##n -# define FMT_MAKE_ARG_TYPE(n) T##n -# define FMT_MAKE_ARG(n) const T##n &v##n -# define FMT_ASSIGN_char(n) \ - arr[n] = fmt::internal::MakeValue< fmt::BasicFormatter<char> >(v##n) -# define FMT_ASSIGN_wchar_t(n) \ - arr[n] = fmt::internal::MakeValue< fmt::BasicFormatter<wchar_t> >(v##n) - -#if FMT_USE_VARIADIC_TEMPLATES -// Defines a variadic function returning void. -# define FMT_VARIADIC_VOID(func, arg_type) \ - template <typename... Args> \ - void func(arg_type arg0, const Args & ... args) { \ - typedef fmt::internal::ArgArray<sizeof...(Args)> ArgArray; \ - typename ArgArray::Type array{ \ - ArgArray::template make<fmt::BasicFormatter<Char> >(args)...}; \ - func(arg0, fmt::ArgList(fmt::internal::make_type(args...), array)); \ - } - -// Defines a variadic constructor. -# define FMT_VARIADIC_CTOR(ctor, func, arg0_type, arg1_type) \ - template <typename... Args> \ - ctor(arg0_type arg0, arg1_type arg1, const Args & ... args) { \ - typedef fmt::internal::ArgArray<sizeof...(Args)> ArgArray; \ - typename ArgArray::Type array{ \ - ArgArray::template make<fmt::BasicFormatter<Char> >(args)...}; \ - func(arg0, arg1, fmt::ArgList(fmt::internal::make_type(args...), array)); \ - } - -#else - -# define FMT_MAKE_REF(n) \ - fmt::internal::MakeValue< fmt::BasicFormatter<Char> >(v##n) -# define FMT_MAKE_REF2(n) v##n - -// Defines a wrapper for a function taking one argument of type arg_type -// and n additional arguments of arbitrary types. -# define FMT_WRAP1(func, arg_type, n) \ - template <FMT_GEN(n, FMT_MAKE_TEMPLATE_ARG)> \ - inline void func(arg_type arg1, FMT_GEN(n, FMT_MAKE_ARG)) { \ - const fmt::internal::ArgArray<n>::Type array = {FMT_GEN(n, FMT_MAKE_REF)}; \ - func(arg1, fmt::ArgList( \ - fmt::internal::make_type(FMT_GEN(n, FMT_MAKE_REF2)), array)); \ - } - -// Emulates a variadic function returning void on a pre-C++11 compiler. -# define FMT_VARIADIC_VOID(func, arg_type) \ - inline void func(arg_type arg) { func(arg, fmt::ArgList()); } \ - FMT_WRAP1(func, arg_type, 1) FMT_WRAP1(func, arg_type, 2) \ - FMT_WRAP1(func, arg_type, 3) FMT_WRAP1(func, arg_type, 4) \ - FMT_WRAP1(func, arg_type, 5) FMT_WRAP1(func, arg_type, 6) \ - FMT_WRAP1(func, arg_type, 7) FMT_WRAP1(func, arg_type, 8) \ - FMT_WRAP1(func, arg_type, 9) FMT_WRAP1(func, arg_type, 10) - -# define FMT_CTOR(ctor, func, arg0_type, arg1_type, n) \ - template <FMT_GEN(n, FMT_MAKE_TEMPLATE_ARG)> \ - ctor(arg0_type arg0, arg1_type arg1, FMT_GEN(n, FMT_MAKE_ARG)) { \ - const fmt::internal::ArgArray<n>::Type array = {FMT_GEN(n, FMT_MAKE_REF)}; \ - func(arg0, arg1, fmt::ArgList( \ - fmt::internal::make_type(FMT_GEN(n, FMT_MAKE_REF2)), array)); \ - } - -// Emulates a variadic constructor on a pre-C++11 compiler. -# define FMT_VARIADIC_CTOR(ctor, func, arg0_type, arg1_type) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 1) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 2) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 3) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 4) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 5) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 6) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 7) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 8) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 9) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 10) -#endif - -// Generates a comma-separated list with results of applying f to pairs -// (argument, index). -#define FMT_FOR_EACH1(f, x0) f(x0, 0) -#define FMT_FOR_EACH2(f, x0, x1) \ - FMT_FOR_EACH1(f, x0), f(x1, 1) -#define FMT_FOR_EACH3(f, x0, x1, x2) \ - FMT_FOR_EACH2(f, x0 ,x1), f(x2, 2) -#define FMT_FOR_EACH4(f, x0, x1, x2, x3) \ - FMT_FOR_EACH3(f, x0, x1, x2), f(x3, 3) -#define FMT_FOR_EACH5(f, x0, x1, x2, x3, x4) \ - FMT_FOR_EACH4(f, x0, x1, x2, x3), f(x4, 4) -#define FMT_FOR_EACH6(f, x0, x1, x2, x3, x4, x5) \ - FMT_FOR_EACH5(f, x0, x1, x2, x3, x4), f(x5, 5) -#define FMT_FOR_EACH7(f, x0, x1, x2, x3, x4, x5, x6) \ - FMT_FOR_EACH6(f, x0, x1, x2, x3, x4, x5), f(x6, 6) -#define FMT_FOR_EACH8(f, x0, x1, x2, x3, x4, x5, x6, x7) \ - FMT_FOR_EACH7(f, x0, x1, x2, x3, x4, x5, x6), f(x7, 7) -#define FMT_FOR_EACH9(f, x0, x1, x2, x3, x4, x5, x6, x7, x8) \ - FMT_FOR_EACH8(f, x0, x1, x2, x3, x4, x5, x6, x7), f(x8, 8) -#define FMT_FOR_EACH10(f, x0, x1, x2, x3, x4, x5, x6, x7, x8, x9) \ - FMT_FOR_EACH9(f, x0, x1, x2, x3, x4, x5, x6, x7, x8), f(x9, 9) - -/** - An error returned by an operating system or a language runtime, - for example a file opening error. -*/ -class SystemError : public internal::RuntimeError { - private: - void init(int err_code, CStringRef format_str, ArgList args); - - protected: - int error_code_; - - typedef char Char; // For FMT_VARIADIC_CTOR. - - SystemError() {} - - public: - /** - \rst - Constructs a :class:`fmt::SystemError` object with the description - of the form - - .. parsed-literal:: - *<message>*: *<system-message>* - - where *<message>* is the formatted message and *<system-message>* is - the system message corresponding to the error code. - *error_code* is a system error code as given by ``errno``. - If *error_code* is not a valid error code such as -1, the system message - may look like "Unknown error -1" and is platform-dependent. - - **Example**:: - - // This throws a SystemError with the description - // cannot open file 'madeup': No such file or directory - // or similar (system message may vary). - const char *filename = "madeup"; - std::FILE *file = std::fopen(filename, "r"); - if (!file) - throw fmt::SystemError(errno, "cannot open file '{}'", filename); - \endrst - */ - SystemError(int error_code, CStringRef message) { - init(error_code, message, ArgList()); - } - FMT_VARIADIC_CTOR(SystemError, init, int, CStringRef) - - ~SystemError() throw(); - - int error_code() const { return error_code_; } -}; - -/** - \rst - This template provides operations for formatting and writing data into - a character stream. The output is stored in a buffer provided by a subclass - such as :class:`fmt::BasicMemoryWriter`. - - You can use one of the following typedefs for common character types: - - +---------+----------------------+ - | Type | Definition | - +=========+======================+ - | Writer | BasicWriter<char> | - +---------+----------------------+ - | WWriter | BasicWriter<wchar_t> | - +---------+----------------------+ - - \endrst - */ -template <typename Char> -class BasicWriter { - private: - // Output buffer. - Buffer<Char> &buffer_; - - FMT_DISALLOW_COPY_AND_ASSIGN(BasicWriter); - - typedef typename internal::CharTraits<Char>::CharPtr CharPtr; - -#if FMT_SECURE_SCL - // Returns pointer value. - static Char *get(CharPtr p) { return p.base(); } -#else - static Char *get(Char *p) { return p; } -#endif - - // Fills the padding around the content and returns the pointer to the - // content area. - static CharPtr fill_padding(CharPtr buffer, - unsigned total_size, std::size_t content_size, wchar_t fill); - - // Grows the buffer by n characters and returns a pointer to the newly - // allocated area. - CharPtr grow_buffer(std::size_t n) { - std::size_t size = buffer_.size(); - buffer_.resize(size + n); - return internal::make_ptr(&buffer_[size], n); - } - - // Writes an unsigned decimal integer. - template <typename UInt> - Char *write_unsigned_decimal(UInt value, unsigned prefix_size = 0) { - unsigned num_digits = internal::count_digits(value); - Char *ptr = get(grow_buffer(prefix_size + num_digits)); - internal::format_decimal(ptr + prefix_size, value, num_digits); - return ptr; - } - - // Writes a decimal integer. - template <typename Int> - void write_decimal(Int value) { - typedef typename internal::IntTraits<Int>::MainType MainType; - MainType abs_value = static_cast<MainType>(value); - if (internal::is_negative(value)) { - abs_value = 0 - abs_value; - *write_unsigned_decimal(abs_value, 1) = '-'; - } else { - write_unsigned_decimal(abs_value, 0); - } - } - - // Prepare a buffer for integer formatting. - CharPtr prepare_int_buffer(unsigned num_digits, - const EmptySpec &, const char *prefix, unsigned prefix_size) { - unsigned size = prefix_size + num_digits; - CharPtr p = grow_buffer(size); - std::uninitialized_copy(prefix, prefix + prefix_size, p); - return p + size - 1; - } - - template <typename Spec> - CharPtr prepare_int_buffer(unsigned num_digits, - const Spec &spec, const char *prefix, unsigned prefix_size); - - // Formats an integer. - template <typename T, typename Spec> - void write_int(T value, Spec spec); - - // Formats a floating-point number (double or long double). - template <typename T> - void write_double(T value, const FormatSpec &spec); - - // Writes a formatted string. - template <typename StrChar> - CharPtr write_str(const StrChar *s, std::size_t size, const AlignSpec &spec); - - template <typename StrChar> - void write_str(const internal::Arg::StringValue<StrChar> &str, - const FormatSpec &spec); - - // This following methods are private to disallow writing wide characters - // and strings to a char stream. If you want to print a wide string as a - // pointer as std::ostream does, cast it to const void*. - // Do not implement! - void operator<<(typename internal::WCharHelper<wchar_t, Char>::Unsupported); - void operator<<( - typename internal::WCharHelper<const wchar_t *, Char>::Unsupported); - - // Appends floating-point length specifier to the format string. - // The second argument is only used for overload resolution. - void append_float_length(Char *&format_ptr, long double) { - *format_ptr++ = 'L'; - } - - template<typename T> - void append_float_length(Char *&, T) {} - - template <typename Impl, typename Char_> - friend class internal::ArgFormatterBase; - - friend class internal::PrintfArgFormatter<Char>; - - protected: - /** - Constructs a ``BasicWriter`` object. - */ - explicit BasicWriter(Buffer<Char> &b) : buffer_(b) {} - - public: - /** - \rst - Destroys a ``BasicWriter`` object. - \endrst - */ - virtual ~BasicWriter() {} - - /** - Returns the total number of characters written. - */ - std::size_t size() const { return buffer_.size(); } - - /** - Returns a pointer to the output buffer content. No terminating null - character is appended. - */ - const Char *data() const FMT_NOEXCEPT { return &buffer_[0]; } - - /** - Returns a pointer to the output buffer content with terminating null - character appended. - */ - const Char *c_str() const { - std::size_t size = buffer_.size(); - buffer_.reserve(size + 1); - buffer_[size] = '\0'; - return &buffer_[0]; - } - - /** - \rst - Returns the content of the output buffer as an `std::string`. - \endrst - */ - std::basic_string<Char> str() const { - return std::basic_string<Char>(&buffer_[0], buffer_.size()); - } - - /** - \rst - Writes formatted data. - - *args* is an argument list representing arbitrary arguments. - - **Example**:: - - MemoryWriter out; - out.write("Current point:\n"); - out.write("({:+f}, {:+f})", -3.14, 3.14); - - This will write the following output to the ``out`` object: - - .. code-block:: none - - Current point: - (-3.140000, +3.140000) - - The output can be accessed using :func:`data()`, :func:`c_str` or - :func:`str` methods. - - See also :ref:`syntax`. - \endrst - */ - void write(BasicCStringRef<Char> format, ArgList args) { - BasicFormatter<Char>(args, *this).format(format); - } - FMT_VARIADIC_VOID(write, BasicCStringRef<Char>) - - BasicWriter &operator<<(int value) { - write_decimal(value); - return *this; - } - BasicWriter &operator<<(unsigned value) { - return *this << IntFormatSpec<unsigned>(value); - } - BasicWriter &operator<<(long value) { - write_decimal(value); - return *this; - } - BasicWriter &operator<<(unsigned long value) { - return *this << IntFormatSpec<unsigned long>(value); - } - BasicWriter &operator<<(LongLong value) { - write_decimal(value); - return *this; - } - - /** - \rst - Formats *value* and writes it to the stream. - \endrst - */ - BasicWriter &operator<<(ULongLong value) { - return *this << IntFormatSpec<ULongLong>(value); - } - - BasicWriter &operator<<(double value) { - write_double(value, FormatSpec()); - return *this; - } - - /** - \rst - Formats *value* using the general format for floating-point numbers - (``'g'``) and writes it to the stream. - \endrst - */ - BasicWriter &operator<<(long double value) { - write_double(value, FormatSpec()); - return *this; - } - - /** - Writes a character to the stream. - */ - BasicWriter &operator<<(char value) { - buffer_.push_back(value); - return *this; - } - - BasicWriter &operator<<( - typename internal::WCharHelper<wchar_t, Char>::Supported value) { - buffer_.push_back(value); - return *this; - } - - /** - \rst - Writes *value* to the stream. - \endrst - */ - BasicWriter &operator<<(fmt::BasicStringRef<Char> value) { - const Char *str = value.data(); - buffer_.append(str, str + value.size()); - return *this; - } - - BasicWriter &operator<<( - typename internal::WCharHelper<StringRef, Char>::Supported value) { - const char *str = value.data(); - buffer_.append(str, str + value.size()); - return *this; - } - - template <typename T, typename Spec, typename FillChar> - BasicWriter &operator<<(IntFormatSpec<T, Spec, FillChar> spec) { - internal::CharTraits<Char>::convert(FillChar()); - write_int(spec.value(), spec); - return *this; - } - - template <typename StrChar> - BasicWriter &operator<<(const StrFormatSpec<StrChar> &spec) { - const StrChar *s = spec.str(); - write_str(s, std::char_traits<Char>::length(s), spec); - return *this; - } - - void clear() FMT_NOEXCEPT { buffer_.clear(); } - - Buffer<Char> &buffer() FMT_NOEXCEPT { return buffer_; } -}; - -template <typename Char> -template <typename StrChar> -typename BasicWriter<Char>::CharPtr BasicWriter<Char>::write_str( - const StrChar *s, std::size_t size, const AlignSpec &spec) { - CharPtr out = CharPtr(); - if (spec.width() > size) { - out = grow_buffer(spec.width()); - Char fill = internal::CharTraits<Char>::cast(spec.fill()); - if (spec.align() == ALIGN_RIGHT) { - std::uninitialized_fill_n(out, spec.width() - size, fill); - out += spec.width() - size; - } else if (spec.align() == ALIGN_CENTER) { - out = fill_padding(out, spec.width(), size, fill); - } else { - std::uninitialized_fill_n(out + size, spec.width() - size, fill); - } - } else { - out = grow_buffer(size); - } - std::uninitialized_copy(s, s + size, out); - return out; -} - -template <typename Char> -template <typename StrChar> -void BasicWriter<Char>::write_str( - const internal::Arg::StringValue<StrChar> &s, const FormatSpec &spec) { - // Check if StrChar is convertible to Char. - internal::CharTraits<Char>::convert(StrChar()); - if (spec.type_ && spec.type_ != 's') - internal::report_unknown_type(spec.type_, "string"); - const StrChar *str_value = s.value; - std::size_t str_size = s.size; - if (str_size == 0) { - if (!str_value) { - FMT_THROW(FormatError("string pointer is null")); - } - } - std::size_t precision = static_cast<std::size_t>(spec.precision_); - if (spec.precision_ >= 0 && precision < str_size) - str_size = precision; - write_str(str_value, str_size, spec); -} - -template <typename Char> -typename BasicWriter<Char>::CharPtr - BasicWriter<Char>::fill_padding( - CharPtr buffer, unsigned total_size, - std::size_t content_size, wchar_t fill) { - std::size_t padding = total_size - content_size; - std::size_t left_padding = padding / 2; - Char fill_char = internal::CharTraits<Char>::cast(fill); - std::uninitialized_fill_n(buffer, left_padding, fill_char); - buffer += left_padding; - CharPtr content = buffer; - std::uninitialized_fill_n(buffer + content_size, - padding - left_padding, fill_char); - return content; -} - -template <typename Char> -template <typename Spec> -typename BasicWriter<Char>::CharPtr - BasicWriter<Char>::prepare_int_buffer( - unsigned num_digits, const Spec &spec, - const char *prefix, unsigned prefix_size) { - unsigned width = spec.width(); - Alignment align = spec.align(); - Char fill = internal::CharTraits<Char>::cast(spec.fill()); - if (spec.precision() > static_cast<int>(num_digits)) { - // Octal prefix '0' is counted as a digit, so ignore it if precision - // is specified. - if (prefix_size > 0 && prefix[prefix_size - 1] == '0') - --prefix_size; - unsigned number_size = - prefix_size + internal::to_unsigned(spec.precision()); - AlignSpec subspec(number_size, '0', ALIGN_NUMERIC); - if (number_size >= width) - return prepare_int_buffer(num_digits, subspec, prefix, prefix_size); - buffer_.reserve(width); - unsigned fill_size = width - number_size; - if (align != ALIGN_LEFT) { - CharPtr p = grow_buffer(fill_size); - std::uninitialized_fill(p, p + fill_size, fill); - } - CharPtr result = prepare_int_buffer( - num_digits, subspec, prefix, prefix_size); - if (align == ALIGN_LEFT) { - CharPtr p = grow_buffer(fill_size); - std::uninitialized_fill(p, p + fill_size, fill); - } - return result; - } - unsigned size = prefix_size + num_digits; - if (width <= size) { - CharPtr p = grow_buffer(size); - std::uninitialized_copy(prefix, prefix + prefix_size, p); - return p + size - 1; - } - CharPtr p = grow_buffer(width); - CharPtr end = p + width; - if (align == ALIGN_LEFT) { - std::uninitialized_copy(prefix, prefix + prefix_size, p); - p += size; - std::uninitialized_fill(p, end, fill); - } else if (align == ALIGN_CENTER) { - p = fill_padding(p, width, size, fill); - std::uninitialized_copy(prefix, prefix + prefix_size, p); - p += size; - } else { - if (align == ALIGN_NUMERIC) { - if (prefix_size != 0) { - p = std::uninitialized_copy(prefix, prefix + prefix_size, p); - size -= prefix_size; - } - } else { - std::uninitialized_copy(prefix, prefix + prefix_size, end - size); - } - std::uninitialized_fill(p, end - size, fill); - p = end; - } - return p - 1; -} - -template <typename Char> -template <typename T, typename Spec> -void BasicWriter<Char>::write_int(T value, Spec spec) { - unsigned prefix_size = 0; - typedef typename internal::IntTraits<T>::MainType UnsignedType; - UnsignedType abs_value = static_cast<UnsignedType>(value); - char prefix[4] = ""; - if (internal::is_negative(value)) { - prefix[0] = '-'; - ++prefix_size; - abs_value = 0 - abs_value; - } else if (spec.flag(SIGN_FLAG)) { - prefix[0] = spec.flag(PLUS_FLAG) ? '+' : ' '; - ++prefix_size; - } - switch (spec.type()) { - case 0: case 'd': { - unsigned num_digits = internal::count_digits(abs_value); - CharPtr p = prepare_int_buffer(num_digits, spec, prefix, prefix_size) + 1; - internal::format_decimal(get(p), abs_value, 0); - break; - } - case 'x': case 'X': { - UnsignedType n = abs_value; - if (spec.flag(HASH_FLAG)) { - prefix[prefix_size++] = '0'; - prefix[prefix_size++] = spec.type(); - } - unsigned num_digits = 0; - do { - ++num_digits; - } while ((n >>= 4) != 0); - Char *p = get(prepare_int_buffer( - num_digits, spec, prefix, prefix_size)); - n = abs_value; - const char *digits = spec.type() == 'x' ? - "0123456789abcdef" : "0123456789ABCDEF"; - do { - *p-- = digits[n & 0xf]; - } while ((n >>= 4) != 0); - break; - } - case 'b': case 'B': { - UnsignedType n = abs_value; - if (spec.flag(HASH_FLAG)) { - prefix[prefix_size++] = '0'; - prefix[prefix_size++] = spec.type(); - } - unsigned num_digits = 0; - do { - ++num_digits; - } while ((n >>= 1) != 0); - Char *p = get(prepare_int_buffer(num_digits, spec, prefix, prefix_size)); - n = abs_value; - do { - *p-- = static_cast<Char>('0' + (n & 1)); - } while ((n >>= 1) != 0); - break; - } - case 'o': { - UnsignedType n = abs_value; - if (spec.flag(HASH_FLAG)) - prefix[prefix_size++] = '0'; - unsigned num_digits = 0; - do { - ++num_digits; - } while ((n >>= 3) != 0); - Char *p = get(prepare_int_buffer(num_digits, spec, prefix, prefix_size)); - n = abs_value; - do { - *p-- = static_cast<Char>('0' + (n & 7)); - } while ((n >>= 3) != 0); - break; - } - case 'n': { - unsigned num_digits = internal::count_digits(abs_value); - fmt::StringRef sep = ""; -#ifndef ANDROID - sep = internal::thousands_sep(std::localeconv()); -#endif - unsigned size = static_cast<unsigned>( - num_digits + sep.size() * ((num_digits - 1) / 3)); - CharPtr p = prepare_int_buffer(size, spec, prefix, prefix_size) + 1; - internal::format_decimal(get(p), abs_value, 0, internal::ThousandsSep(sep)); - break; - } - default: - internal::report_unknown_type( - spec.type(), spec.flag(CHAR_FLAG) ? "char" : "integer"); - break; - } -} - -template <typename Char> -template <typename T> -void BasicWriter<Char>::write_double(T value, const FormatSpec &spec) { - // Check type. - char type = spec.type(); - bool upper = false; - switch (type) { - case 0: - type = 'g'; - break; - case 'e': case 'f': case 'g': case 'a': - break; - case 'F': -#if FMT_MSC_VER - // MSVC's printf doesn't support 'F'. - type = 'f'; -#endif - // Fall through. - case 'E': case 'G': case 'A': - upper = true; - break; - default: - internal::report_unknown_type(type, "double"); - break; - } - - char sign = 0; - // Use isnegative instead of value < 0 because the latter is always - // false for NaN. - if (internal::FPUtil::isnegative(static_cast<double>(value))) { - sign = '-'; - value = -value; - } else if (spec.flag(SIGN_FLAG)) { - sign = spec.flag(PLUS_FLAG) ? '+' : ' '; - } - - if (internal::FPUtil::isnotanumber(value)) { - // Format NaN ourselves because sprintf's output is not consistent - // across platforms. - std::size_t nan_size = 4; - const char *nan = upper ? " NAN" : " nan"; - if (!sign) { - --nan_size; - ++nan; - } - CharPtr out = write_str(nan, nan_size, spec); - if (sign) - *out = sign; - return; - } - - if (internal::FPUtil::isinfinity(value)) { - // Format infinity ourselves because sprintf's output is not consistent - // across platforms. - std::size_t inf_size = 4; - const char *inf = upper ? " INF" : " inf"; - if (!sign) { - --inf_size; - ++inf; - } - CharPtr out = write_str(inf, inf_size, spec); - if (sign) - *out = sign; - return; - } - - std::size_t offset = buffer_.size(); - unsigned width = spec.width(); - if (sign) { - buffer_.reserve(buffer_.size() + (width > 1u ? width : 1u)); - if (width > 0) - --width; - ++offset; - } - - // Build format string. - enum { MAX_FORMAT_SIZE = 10}; // longest format: %#-*.*Lg - Char format[MAX_FORMAT_SIZE]; - Char *format_ptr = format; - *format_ptr++ = '%'; - unsigned width_for_sprintf = width; - if (spec.flag(HASH_FLAG)) - *format_ptr++ = '#'; - if (spec.align() == ALIGN_CENTER) { - width_for_sprintf = 0; - } else { - if (spec.align() == ALIGN_LEFT) - *format_ptr++ = '-'; - if (width != 0) - *format_ptr++ = '*'; - } - if (spec.precision() >= 0) { - *format_ptr++ = '.'; - *format_ptr++ = '*'; - } - - append_float_length(format_ptr, value); - *format_ptr++ = type; - *format_ptr = '\0'; - - // Format using snprintf. - Char fill = internal::CharTraits<Char>::cast(spec.fill()); - unsigned n = 0; - Char *start = 0; - for (;;) { - std::size_t buffer_size = buffer_.capacity() - offset; -#if FMT_MSC_VER - // MSVC's vsnprintf_s doesn't work with zero size, so reserve - // space for at least one extra character to make the size non-zero. - // Note that the buffer's capacity will increase by more than 1. - if (buffer_size == 0) { - buffer_.reserve(offset + 1); - buffer_size = buffer_.capacity() - offset; - } -#endif - start = &buffer_[offset]; - int result = internal::CharTraits<Char>::format_float( - start, buffer_size, format, width_for_sprintf, spec.precision(), value); - if (result >= 0) { - n = internal::to_unsigned(result); - if (offset + n < buffer_.capacity()) - break; // The buffer is large enough - continue with formatting. - buffer_.reserve(offset + n + 1); - } else { - // If result is negative we ask to increase the capacity by at least 1, - // but as std::vector, the buffer grows exponentially. - buffer_.reserve(buffer_.capacity() + 1); - } - } - if (sign) { - if ((spec.align() != ALIGN_RIGHT && spec.align() != ALIGN_DEFAULT) || - *start != ' ') { - *(start - 1) = sign; - sign = 0; - } else { - *(start - 1) = fill; - } - ++n; - } - if (spec.align() == ALIGN_CENTER && spec.width() > n) { - width = spec.width(); - CharPtr p = grow_buffer(width); - std::memmove(get(p) + (width - n) / 2, get(p), n * sizeof(Char)); - fill_padding(p, spec.width(), n, fill); - return; - } - if (spec.fill() != ' ' || sign) { - while (*start == ' ') - *start++ = fill; - if (sign) - *(start - 1) = sign; - } - grow_buffer(n); -} - -/** - \rst - This class template provides operations for formatting and writing data - into a character stream. The output is stored in a memory buffer that grows - dynamically. - - You can use one of the following typedefs for common character types - and the standard allocator: - - +---------------+-----------------------------------------------------+ - | Type | Definition | - +===============+=====================================================+ - | MemoryWriter | BasicMemoryWriter<char, std::allocator<char>> | - +---------------+-----------------------------------------------------+ - | WMemoryWriter | BasicMemoryWriter<wchar_t, std::allocator<wchar_t>> | - +---------------+-----------------------------------------------------+ - - **Example**:: - - MemoryWriter out; - out << "The answer is " << 42 << "\n"; - out.write("({:+f}, {:+f})", -3.14, 3.14); - - This will write the following output to the ``out`` object: - - .. code-block:: none - - The answer is 42 - (-3.140000, +3.140000) - - The output can be converted to an ``std::string`` with ``out.str()`` or - accessed as a C string with ``out.c_str()``. - \endrst - */ -template <typename Char, typename Allocator = std::allocator<Char> > -class BasicMemoryWriter : public BasicWriter<Char> { - private: - internal::MemoryBuffer<Char, internal::INLINE_BUFFER_SIZE, Allocator> buffer_; - - public: - explicit BasicMemoryWriter(const Allocator& alloc = Allocator()) - : BasicWriter<Char>(buffer_), buffer_(alloc) {} - -#if FMT_USE_RVALUE_REFERENCES - /** - \rst - Constructs a :class:`fmt::BasicMemoryWriter` object moving the content - of the other object to it. - \endrst - */ - BasicMemoryWriter(BasicMemoryWriter &&other) - : BasicWriter<Char>(buffer_), buffer_(std::move(other.buffer_)) { - } - - /** - \rst - Moves the content of the other ``BasicMemoryWriter`` object to this one. - \endrst - */ - BasicMemoryWriter &operator=(BasicMemoryWriter &&other) { - buffer_ = std::move(other.buffer_); - return *this; - } -#endif -}; - -typedef BasicMemoryWriter<char> MemoryWriter; -typedef BasicMemoryWriter<wchar_t> WMemoryWriter; - -/** - \rst - This class template provides operations for formatting and writing data - into a fixed-size array. For writing into a dynamically growing buffer - use :class:`fmt::BasicMemoryWriter`. - - Any write method will throw ``std::runtime_error`` if the output doesn't fit - into the array. - - You can use one of the following typedefs for common character types: - - +--------------+---------------------------+ - | Type | Definition | - +==============+===========================+ - | ArrayWriter | BasicArrayWriter<char> | - +--------------+---------------------------+ - | WArrayWriter | BasicArrayWriter<wchar_t> | - +--------------+---------------------------+ - \endrst - */ -template <typename Char> -class BasicArrayWriter : public BasicWriter<Char> { - private: - internal::FixedBuffer<Char> buffer_; - - public: - /** - \rst - Constructs a :class:`fmt::BasicArrayWriter` object for *array* of the - given size. - \endrst - */ - BasicArrayWriter(Char *array, std::size_t size) - : BasicWriter<Char>(buffer_), buffer_(array, size) {} - - /** - \rst - Constructs a :class:`fmt::BasicArrayWriter` object for *array* of the - size known at compile time. - \endrst - */ - template <std::size_t SIZE> - explicit BasicArrayWriter(Char (&array)[SIZE]) - : BasicWriter<Char>(buffer_), buffer_(array, SIZE) {} -}; - -typedef BasicArrayWriter<char> ArrayWriter; -typedef BasicArrayWriter<wchar_t> WArrayWriter; - -// Reports a system error without throwing an exception. -// Can be used to report errors from destructors. -FMT_API void report_system_error(int error_code, - StringRef message) FMT_NOEXCEPT; - -#if FMT_USE_WINDOWS_H - -/** A Windows error. */ -class WindowsError : public SystemError { - private: - FMT_API void init(int error_code, CStringRef format_str, ArgList args); - - public: - /** - \rst - Constructs a :class:`fmt::WindowsError` object with the description - of the form - - .. parsed-literal:: - *<message>*: *<system-message>* - - where *<message>* is the formatted message and *<system-message>* is the - system message corresponding to the error code. - *error_code* is a Windows error code as given by ``GetLastError``. - If *error_code* is not a valid error code such as -1, the system message - will look like "error -1". - - **Example**:: - - // This throws a WindowsError with the description - // cannot open file 'madeup': The system cannot find the file specified. - // or similar (system message may vary). - const char *filename = "madeup"; - LPOFSTRUCT of = LPOFSTRUCT(); - HFILE file = OpenFile(filename, &of, OF_READ); - if (file == HFILE_ERROR) { - throw fmt::WindowsError(GetLastError(), - "cannot open file '{}'", filename); - } - \endrst - */ - WindowsError(int error_code, CStringRef message) { - init(error_code, message, ArgList()); - } - FMT_VARIADIC_CTOR(WindowsError, init, int, CStringRef) -}; - -// Reports a Windows error without throwing an exception. -// Can be used to report errors from destructors. -FMT_API void report_windows_error(int error_code, - StringRef message) FMT_NOEXCEPT; - -#endif - -enum Color { BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE }; - -/** - Formats a string and prints it to stdout using ANSI escape sequences - to specify color (experimental). - Example: - print_colored(fmt::RED, "Elapsed time: {0:.2f} seconds", 1.23); - */ -FMT_API void print_colored(Color c, CStringRef format, ArgList args); - -/** - \rst - Formats arguments and returns the result as a string. - - **Example**:: - - std::string message = format("The answer is {}", 42); - \endrst -*/ -inline std::string format(CStringRef format_str, ArgList args) { - MemoryWriter w; - w.write(format_str, args); - return w.str(); -} - -inline std::wstring format(WCStringRef format_str, ArgList args) { - WMemoryWriter w; - w.write(format_str, args); - return w.str(); -} - -/** - \rst - Prints formatted data to the file *f*. - - **Example**:: - - print(stderr, "Don't {}!", "panic"); - \endrst - */ -FMT_API void print(std::FILE *f, CStringRef format_str, ArgList args); - -/** - \rst - Prints formatted data to ``stdout``. - - **Example**:: - - print("Elapsed time: {0:.2f} seconds", 1.23); - \endrst - */ -FMT_API void print(CStringRef format_str, ArgList args); - -template <typename Char> -void printf(BasicWriter<Char> &w, BasicCStringRef<Char> format, ArgList args) { - internal::PrintfFormatter<Char>(args).format(w, format); -} - -/** - \rst - Formats arguments and returns the result as a string. - - **Example**:: - - std::string message = fmt::sprintf("The answer is %d", 42); - \endrst -*/ -inline std::string sprintf(CStringRef format, ArgList args) { - MemoryWriter w; - printf(w, format, args); - return w.str(); -} - -inline std::wstring sprintf(WCStringRef format, ArgList args) { - WMemoryWriter w; - printf(w, format, args); - return w.str(); -} - -/** - \rst - Prints formatted data to the file *f*. - - **Example**:: - - fmt::fprintf(stderr, "Don't %s!", "panic"); - \endrst - */ -FMT_API int fprintf(std::FILE *f, CStringRef format, ArgList args); - -/** - \rst - Prints formatted data to ``stdout``. - - **Example**:: - - fmt::printf("Elapsed time: %.2f seconds", 1.23); - \endrst - */ -inline int printf(CStringRef format, ArgList args) { - return fprintf(stdout, format, args); -} - -/** - Fast integer formatter. - */ -class FormatInt { - private: - // Buffer should be large enough to hold all digits (digits10 + 1), - // a sign and a null character. - enum {BUFFER_SIZE = std::numeric_limits<ULongLong>::digits10 + 3}; - mutable char buffer_[BUFFER_SIZE]; - char *str_; - - // Formats value in reverse and returns the number of digits. - char *format_decimal(ULongLong value) { - char *buffer_end = buffer_ + BUFFER_SIZE - 1; - while (value >= 100) { - // Integer division is slow so do it for a group of two digits instead - // of for every digit. The idea comes from the talk by Alexandrescu - // "Three Optimization Tips for C++". See speed-test for a comparison. - unsigned index = static_cast<unsigned>((value % 100) * 2); - value /= 100; - *--buffer_end = internal::Data::DIGITS[index + 1]; - *--buffer_end = internal::Data::DIGITS[index]; - } - if (value < 10) { - *--buffer_end = static_cast<char>('0' + value); - return buffer_end; - } - unsigned index = static_cast<unsigned>(value * 2); - *--buffer_end = internal::Data::DIGITS[index + 1]; - *--buffer_end = internal::Data::DIGITS[index]; - return buffer_end; - } - - void FormatSigned(LongLong value) { - ULongLong abs_value = static_cast<ULongLong>(value); - bool negative = value < 0; - if (negative) - abs_value = 0 - abs_value; - str_ = format_decimal(abs_value); - if (negative) - *--str_ = '-'; - } - - public: - explicit FormatInt(int value) { FormatSigned(value); } - explicit FormatInt(long value) { FormatSigned(value); } - explicit FormatInt(LongLong value) { FormatSigned(value); } - explicit FormatInt(unsigned value) : str_(format_decimal(value)) {} - explicit FormatInt(unsigned long value) : str_(format_decimal(value)) {} - explicit FormatInt(ULongLong value) : str_(format_decimal(value)) {} - - /** Returns the number of characters written to the output buffer. */ - std::size_t size() const { - return internal::to_unsigned(buffer_ - str_ + BUFFER_SIZE - 1); - } - - /** - Returns a pointer to the output buffer content. No terminating null - character is appended. - */ - const char *data() const { return str_; } - - /** - Returns a pointer to the output buffer content with terminating null - character appended. - */ - const char *c_str() const { - buffer_[BUFFER_SIZE - 1] = '\0'; - return str_; - } - - /** - \rst - Returns the content of the output buffer as an ``std::string``. - \endrst - */ - std::string str() const { return std::string(str_, size()); } -}; - -// Formats a decimal integer value writing into buffer and returns -// a pointer to the end of the formatted string. This function doesn't -// write a terminating null character. -template <typename T> -inline void format_decimal(char *&buffer, T value) { - typedef typename internal::IntTraits<T>::MainType MainType; - MainType abs_value = static_cast<MainType>(value); - if (internal::is_negative(value)) { - *buffer++ = '-'; - abs_value = 0 - abs_value; - } - if (abs_value < 100) { - if (abs_value < 10) { - *buffer++ = static_cast<char>('0' + abs_value); - return; - } - unsigned index = static_cast<unsigned>(abs_value * 2); - *buffer++ = internal::Data::DIGITS[index]; - *buffer++ = internal::Data::DIGITS[index + 1]; - return; - } - unsigned num_digits = internal::count_digits(abs_value); - internal::format_decimal(buffer, abs_value, num_digits); - buffer += num_digits; -} - -/** - \rst - Returns a named argument for formatting functions. - - **Example**:: - - print("Elapsed time: {s:.2f} seconds", arg("s", 1.23)); - - \endrst - */ -template <typename T> -inline internal::NamedArg<char> arg(StringRef name, const T &arg) { - return internal::NamedArg<char>(name, arg); -} - -template <typename T> -inline internal::NamedArg<wchar_t> arg(WStringRef name, const T &arg) { - return internal::NamedArg<wchar_t>(name, arg); -} - -// The following two functions are deleted intentionally to disable -// nested named arguments as in ``format("{}", arg("a", arg("b", 42)))``. -template <typename Char> -void arg(StringRef, const internal::NamedArg<Char>&) FMT_DELETED_OR_UNDEFINED; -template <typename Char> -void arg(WStringRef, const internal::NamedArg<Char>&) FMT_DELETED_OR_UNDEFINED; -} - -#if FMT_GCC_VERSION -// Use the system_header pragma to suppress warnings about variadic macros -// because suppressing -Wvariadic-macros with the diagnostic pragma doesn't -// work. It is used at the end because we want to suppress as little warnings -// as possible. -# pragma GCC system_header -#endif - -// This is used to work around VC++ bugs in handling variadic macros. -#define FMT_EXPAND(args) args - -// Returns the number of arguments. -// Based on https://groups.google.com/forum/#!topic/comp.std.c/d-6Mj5Lko_s. -#define FMT_NARG(...) FMT_NARG_(__VA_ARGS__, FMT_RSEQ_N()) -#define FMT_NARG_(...) FMT_EXPAND(FMT_ARG_N(__VA_ARGS__)) -#define FMT_ARG_N(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, N, ...) N -#define FMT_RSEQ_N() 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 - -#define FMT_CONCAT(a, b) a##b -#define FMT_FOR_EACH_(N, f, ...) \ - FMT_EXPAND(FMT_CONCAT(FMT_FOR_EACH, N)(f, __VA_ARGS__)) -#define FMT_FOR_EACH(f, ...) \ - FMT_EXPAND(FMT_FOR_EACH_(FMT_NARG(__VA_ARGS__), f, __VA_ARGS__)) - -#define FMT_ADD_ARG_NAME(type, index) type arg##index -#define FMT_GET_ARG_NAME(type, index) arg##index - -#if FMT_USE_VARIADIC_TEMPLATES -# define FMT_VARIADIC_(Char, ReturnType, func, call, ...) \ - template <typename... Args> \ - ReturnType func(FMT_FOR_EACH(FMT_ADD_ARG_NAME, __VA_ARGS__), \ - const Args & ... args) { \ - typedef fmt::internal::ArgArray<sizeof...(Args)> ArgArray; \ - typename ArgArray::Type array{ \ - ArgArray::template make<fmt::BasicFormatter<Char> >(args)...}; \ - call(FMT_FOR_EACH(FMT_GET_ARG_NAME, __VA_ARGS__), \ - fmt::ArgList(fmt::internal::make_type(args...), array)); \ - } -#else -// Defines a wrapper for a function taking __VA_ARGS__ arguments -// and n additional arguments of arbitrary types. -# define FMT_WRAP(Char, ReturnType, func, call, n, ...) \ - template <FMT_GEN(n, FMT_MAKE_TEMPLATE_ARG)> \ - inline ReturnType func(FMT_FOR_EACH(FMT_ADD_ARG_NAME, __VA_ARGS__), \ - FMT_GEN(n, FMT_MAKE_ARG)) { \ - fmt::internal::ArgArray<n>::Type arr; \ - FMT_GEN(n, FMT_ASSIGN_##Char); \ - call(FMT_FOR_EACH(FMT_GET_ARG_NAME, __VA_ARGS__), fmt::ArgList( \ - fmt::internal::make_type(FMT_GEN(n, FMT_MAKE_REF2)), arr)); \ - } - -# define FMT_VARIADIC_(Char, ReturnType, func, call, ...) \ - inline ReturnType func(FMT_FOR_EACH(FMT_ADD_ARG_NAME, __VA_ARGS__)) { \ - call(FMT_FOR_EACH(FMT_GET_ARG_NAME, __VA_ARGS__), fmt::ArgList()); \ - } \ - FMT_WRAP(Char, ReturnType, func, call, 1, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 2, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 3, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 4, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 5, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 6, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 7, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 8, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 9, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 10, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 11, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 12, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 13, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 14, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 15, __VA_ARGS__) -#endif // FMT_USE_VARIADIC_TEMPLATES - -/** - \rst - Defines a variadic function with the specified return type, function name - and argument types passed as variable arguments to this macro. - - **Example**:: - - void print_error(const char *file, int line, const char *format, - fmt::ArgList args) { - fmt::print("{}: {}: ", file, line); - fmt::print(format, args); - } - FMT_VARIADIC(void, print_error, const char *, int, const char *) - - ``FMT_VARIADIC`` is used for compatibility with legacy C++ compilers that - don't implement variadic templates. You don't have to use this macro if - you don't need legacy compiler support and can use variadic templates - directly:: - - template <typename... Args> - void print_error(const char *file, int line, const char *format, - const Args & ... args) { - fmt::print("{}: {}: ", file, line); - fmt::print(format, args...); - } - \endrst - */ -#define FMT_VARIADIC(ReturnType, func, ...) \ - FMT_VARIADIC_(char, ReturnType, func, return func, __VA_ARGS__) - -#define FMT_VARIADIC_W(ReturnType, func, ...) \ - FMT_VARIADIC_(wchar_t, ReturnType, func, return func, __VA_ARGS__) - -#define FMT_CAPTURE_ARG_(id, index) ::fmt::arg(#id, id) - -#define FMT_CAPTURE_ARG_W_(id, index) ::fmt::arg(L###id, id) - -/** - \rst - Convenient macro to capture the arguments' names and values into several - ``fmt::arg(name, value)``. - - **Example**:: - - int x = 1, y = 2; - print("point: ({x}, {y})", FMT_CAPTURE(x, y)); - // same as: - // print("point: ({x}, {y})", arg("x", x), arg("y", y)); - - \endrst - */ -#define FMT_CAPTURE(...) FMT_FOR_EACH(FMT_CAPTURE_ARG_, __VA_ARGS__) - -#define FMT_CAPTURE_W(...) FMT_FOR_EACH(FMT_CAPTURE_ARG_W_, __VA_ARGS__) - -namespace fmt { -FMT_VARIADIC(std::string, format, CStringRef) -FMT_VARIADIC_W(std::wstring, format, WCStringRef) -FMT_VARIADIC(void, print, CStringRef) -FMT_VARIADIC(void, print, std::FILE *, CStringRef) - -FMT_VARIADIC(void, print_colored, Color, CStringRef) -FMT_VARIADIC(std::string, sprintf, CStringRef) -FMT_VARIADIC_W(std::wstring, sprintf, WCStringRef) -FMT_VARIADIC(int, printf, CStringRef) -FMT_VARIADIC(int, fprintf, std::FILE *, CStringRef) - -namespace internal { -template <typename Char> -inline bool is_name_start(Char c) { - return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c; -} - -// Parses an unsigned integer advancing s to the end of the parsed input. -// This function assumes that the first character of s is a digit. -template <typename Char> -unsigned parse_nonnegative_int(const Char *&s) { - assert('0' <= *s && *s <= '9'); - unsigned value = 0; - do { - unsigned new_value = value * 10 + (*s++ - '0'); - // Check if value wrapped around. - if (new_value < value) { - value = (std::numeric_limits<unsigned>::max)(); - break; - } - value = new_value; - } while ('0' <= *s && *s <= '9'); - // Convert to unsigned to prevent a warning. - unsigned max_int = (std::numeric_limits<int>::max)(); - if (value > max_int) - FMT_THROW(FormatError("number is too big")); - return value; -} - -inline void require_numeric_argument(const Arg &arg, char spec) { - if (arg.type > Arg::LAST_NUMERIC_TYPE) { - std::string message = - fmt::format("format specifier '{}' requires numeric argument", spec); - FMT_THROW(fmt::FormatError(message)); - } -} - -template <typename Char> -void check_sign(const Char *&s, const Arg &arg) { - char sign = static_cast<char>(*s); - require_numeric_argument(arg, sign); - if (arg.type == Arg::UINT || arg.type == Arg::ULONG_LONG) { - FMT_THROW(FormatError(fmt::format( - "format specifier '{}' requires signed argument", sign))); - } - ++s; -} -} // namespace internal - -template <typename Char, typename AF> -inline internal::Arg BasicFormatter<Char, AF>::get_arg( - BasicStringRef<Char> arg_name, const char *&error) { - if (check_no_auto_index(error)) { - map_.init(args()); - const internal::Arg *arg = map_.find(arg_name); - if (arg) - return *arg; - error = "argument not found"; - } - return internal::Arg(); -} - -template <typename Char, typename AF> -inline internal::Arg BasicFormatter<Char, AF>::parse_arg_index(const Char *&s) { - const char *error = 0; - internal::Arg arg = *s < '0' || *s > '9' ? - next_arg(error) : get_arg(internal::parse_nonnegative_int(s), error); - if (error) { - FMT_THROW(FormatError( - *s != '}' && *s != ':' ? "invalid format string" : error)); - } - return arg; -} - -template <typename Char, typename AF> -inline internal::Arg BasicFormatter<Char, AF>::parse_arg_name(const Char *&s) { - assert(internal::is_name_start(*s)); - const Char *start = s; - Char c; - do { - c = *++s; - } while (internal::is_name_start(c) || ('0' <= c && c <= '9')); - const char *error = 0; - internal::Arg arg = get_arg(BasicStringRef<Char>(start, s - start), error); - if (error) - FMT_THROW(FormatError(error)); - return arg; -} - -template <typename Char, typename ArgFormatter> -const Char *BasicFormatter<Char, ArgFormatter>::format( - const Char *&format_str, const internal::Arg &arg) { - using internal::Arg; - const Char *s = format_str; - FormatSpec spec; - if (*s == ':') { - if (arg.type == Arg::CUSTOM) { - arg.custom.format(this, arg.custom.value, &s); - return s; - } - ++s; - // Parse fill and alignment. - if (Char c = *s) { - const Char *p = s + 1; - spec.align_ = ALIGN_DEFAULT; - do { - switch (*p) { - case '<': - spec.align_ = ALIGN_LEFT; - break; - case '>': - spec.align_ = ALIGN_RIGHT; - break; - case '=': - spec.align_ = ALIGN_NUMERIC; - break; - case '^': - spec.align_ = ALIGN_CENTER; - break; - } - if (spec.align_ != ALIGN_DEFAULT) { - if (p != s) { - if (c == '}') break; - if (c == '{') - FMT_THROW(FormatError("invalid fill character '{'")); - s += 2; - spec.fill_ = c; - } else ++s; - if (spec.align_ == ALIGN_NUMERIC) - require_numeric_argument(arg, '='); - break; - } - } while (--p >= s); - } - - // Parse sign. - switch (*s) { - case '+': - check_sign(s, arg); - spec.flags_ |= SIGN_FLAG | PLUS_FLAG; - break; - case '-': - check_sign(s, arg); - spec.flags_ |= MINUS_FLAG; - break; - case ' ': - check_sign(s, arg); - spec.flags_ |= SIGN_FLAG; - break; - } - - if (*s == '#') { - require_numeric_argument(arg, '#'); - spec.flags_ |= HASH_FLAG; - ++s; - } - - // Parse zero flag. - if (*s == '0') { - require_numeric_argument(arg, '0'); - spec.align_ = ALIGN_NUMERIC; - spec.fill_ = '0'; - ++s; - } - - // Parse width. - if ('0' <= *s && *s <= '9') { - spec.width_ = internal::parse_nonnegative_int(s); - } else if (*s == '{') { - ++s; - Arg width_arg = internal::is_name_start(*s) ? - parse_arg_name(s) : parse_arg_index(s); - if (*s++ != '}') - FMT_THROW(FormatError("invalid format string")); - ULongLong value = 0; - switch (width_arg.type) { - case Arg::INT: - if (width_arg.int_value < 0) - FMT_THROW(FormatError("negative width")); - value = width_arg.int_value; - break; - case Arg::UINT: - value = width_arg.uint_value; - break; - case Arg::LONG_LONG: - if (width_arg.long_long_value < 0) - FMT_THROW(FormatError("negative width")); - value = width_arg.long_long_value; - break; - case Arg::ULONG_LONG: - value = width_arg.ulong_long_value; - break; - default: - FMT_THROW(FormatError("width is not integer")); - } - if (value > (std::numeric_limits<int>::max)()) - FMT_THROW(FormatError("number is too big")); - spec.width_ = static_cast<int>(value); - } - - // Parse precision. - if (*s == '.') { - ++s; - spec.precision_ = 0; - if ('0' <= *s && *s <= '9') { - spec.precision_ = internal::parse_nonnegative_int(s); - } else if (*s == '{') { - ++s; - Arg precision_arg = internal::is_name_start(*s) ? - parse_arg_name(s) : parse_arg_index(s); - if (*s++ != '}') - FMT_THROW(FormatError("invalid format string")); - ULongLong value = 0; - switch (precision_arg.type) { - case Arg::INT: - if (precision_arg.int_value < 0) - FMT_THROW(FormatError("negative precision")); - value = precision_arg.int_value; - break; - case Arg::UINT: - value = precision_arg.uint_value; - break; - case Arg::LONG_LONG: - if (precision_arg.long_long_value < 0) - FMT_THROW(FormatError("negative precision")); - value = precision_arg.long_long_value; - break; - case Arg::ULONG_LONG: - value = precision_arg.ulong_long_value; - break; - default: - FMT_THROW(FormatError("precision is not integer")); - } - if (value > (std::numeric_limits<int>::max)()) - FMT_THROW(FormatError("number is too big")); - spec.precision_ = static_cast<int>(value); - } else { - FMT_THROW(FormatError("missing precision specifier")); - } - if (arg.type <= Arg::LAST_INTEGER_TYPE || arg.type == Arg::POINTER) { - FMT_THROW(FormatError( - fmt::format("precision not allowed in {} format specifier", - arg.type == Arg::POINTER ? "pointer" : "integer"))); - } - } - - // Parse type. - if (*s != '}' && *s) - spec.type_ = static_cast<char>(*s++); - } - - if (*s++ != '}') - FMT_THROW(FormatError("missing '}' in format string")); - - // Format argument. - ArgFormatter(*this, spec, s - 1).visit(arg); - return s; -} - -template <typename Char, typename AF> -void BasicFormatter<Char, AF>::format(BasicCStringRef<Char> format_str) { - const Char *s = format_str.c_str(); - const Char *start = s; - while (*s) { - Char c = *s++; - if (c != '{' && c != '}') continue; - if (*s == c) { - write(writer_, start, s); - start = ++s; - continue; - } - if (c == '}') - FMT_THROW(FormatError("unmatched '}' in format string")); - write(writer_, start, s - 1); - internal::Arg arg = internal::is_name_start(*s) ? - parse_arg_name(s) : parse_arg_index(s); - start = s = format(s, arg); - } - write(writer_, start, s); -} -} // namespace fmt - -#if FMT_USE_USER_DEFINED_LITERALS -namespace fmt { -namespace internal { - -template <typename Char> -struct UdlFormat { - const Char *str; - - template <typename... Args> - auto operator()(Args && ... args) const - -> decltype(format(str, std::forward<Args>(args)...)) { - return format(str, std::forward<Args>(args)...); - } -}; - -template <typename Char> -struct UdlArg { - const Char *str; - - template <typename T> - NamedArg<Char> operator=(T &&value) const { - return {str, std::forward<T>(value)}; - } -}; - -} // namespace internal - -inline namespace literals { - -/** - \rst - C++11 literal equivalent of :func:`fmt::format`. - - **Example**:: - - using namespace fmt::literals; - std::string message = "The answer is {}"_format(42); - \endrst - */ -inline internal::UdlFormat<char> -operator"" _format(const char *s, std::size_t) { return {s}; } -inline internal::UdlFormat<wchar_t> -operator"" _format(const wchar_t *s, std::size_t) { return {s}; } - -/** - \rst - C++11 literal equivalent of :func:`fmt::arg`. - - **Example**:: - - using namespace fmt::literals; - print("Elapsed time: {s:.2f} seconds", "s"_a=1.23); - \endrst - */ -inline internal::UdlArg<char> -operator"" _a(const char *s, std::size_t) { return {s}; } -inline internal::UdlArg<wchar_t> -operator"" _a(const wchar_t *s, std::size_t) { return {s}; } - -} // inline namespace literals -} // namespace fmt -#endif // FMT_USE_USER_DEFINED_LITERALS - -// Restore warnings. -#if FMT_GCC_VERSION >= 406 -# pragma GCC diagnostic pop -#endif - -#if defined(__clang__) && !defined(FMT_ICC_VERSION) -# pragma clang diagnostic pop -#endif - -#ifdef FMT_HEADER_ONLY -# define FMT_FUNC inline -# include "format.cc" -#else -# define FMT_FUNC -#endif - -#endif // FMT_FORMAT_H_
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fmt/include/fmt/core.h Fri Jul 13 13:15:12 2018 +0200 @@ -0,0 +1,1331 @@ +// Formatting library for C++ - the core API +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_CORE_H_ +#define FMT_CORE_H_ + +#include <cassert> +#include <cstdio> +#include <cstring> +#include <iterator> +#include <string> +#include <type_traits> + +// The fmt library version in the form major * 10000 + minor * 100 + patch. +#define FMT_VERSION 50100 + +#ifdef __has_feature +# define FMT_HAS_FEATURE(x) __has_feature(x) +#else +# define FMT_HAS_FEATURE(x) 0 +#endif + +#ifdef __has_include +# define FMT_HAS_INCLUDE(x) __has_include(x) +#else +# define FMT_HAS_INCLUDE(x) 0 +#endif + +#ifdef __has_cpp_attribute +# define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) +#else +# define FMT_HAS_CPP_ATTRIBUTE(x) 0 +#endif + +#if defined(__GNUC__) && !defined(__clang__) +# define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) +#else +# define FMT_GCC_VERSION 0 +#endif + +#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__) +# define FMT_HAS_GXX_CXX11 FMT_GCC_VERSION +#else +# define FMT_HAS_GXX_CXX11 0 +#endif + +#ifdef _MSC_VER +# define FMT_MSC_VER _MSC_VER +#else +# define FMT_MSC_VER 0 +#endif + +// Check if relaxed c++14 constexpr is supported. +// GCC doesn't allow throw in constexpr until version 6 (bug 67371). +#ifndef FMT_USE_CONSTEXPR +# define FMT_USE_CONSTEXPR \ + (FMT_HAS_FEATURE(cxx_relaxed_constexpr) || FMT_MSC_VER >= 1910 || \ + (FMT_GCC_VERSION >= 600 && __cplusplus >= 201402L)) +#endif +#if FMT_USE_CONSTEXPR +# define FMT_CONSTEXPR constexpr +# define FMT_CONSTEXPR_DECL constexpr +#else +# define FMT_CONSTEXPR inline +# define FMT_CONSTEXPR_DECL +#endif + +#ifndef FMT_OVERRIDE +# if FMT_HAS_FEATURE(cxx_override) || \ + (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || \ + FMT_MSC_VER >= 1900 +# define FMT_OVERRIDE override +# else +# define FMT_OVERRIDE +# endif +#endif + +#if FMT_HAS_FEATURE(cxx_explicit_conversions) || \ + FMT_MSC_VER >= 1800 +# define FMT_EXPLICIT explicit +#else +# define FMT_EXPLICIT +#endif + +#ifndef FMT_NULL +# if FMT_HAS_FEATURE(cxx_nullptr) || \ + (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || \ + FMT_MSC_VER >= 1600 +# define FMT_NULL nullptr +# define FMT_USE_NULLPTR 1 +# else +# define FMT_NULL NULL +# endif +#endif + +#ifndef FMT_USE_NULLPTR +# define FMT_USE_NULLPTR 0 +#endif + +#if FMT_HAS_CPP_ATTRIBUTE(noreturn) +# define FMT_NORETURN [[noreturn]] +#else +# define FMT_NORETURN +#endif + +// Check if exceptions are disabled. +#if defined(__GNUC__) && !defined(__EXCEPTIONS) +# define FMT_EXCEPTIONS 0 +#elif FMT_MSC_VER && !_HAS_EXCEPTIONS +# define FMT_EXCEPTIONS 0 +#endif +#ifndef FMT_EXCEPTIONS +# define FMT_EXCEPTIONS 1 +#endif + +// Define FMT_USE_NOEXCEPT to make fmt use noexcept (C++11 feature). +#ifndef FMT_USE_NOEXCEPT +# define FMT_USE_NOEXCEPT 0 +#endif + +#if FMT_USE_NOEXCEPT || FMT_HAS_FEATURE(cxx_noexcept) || \ + (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || \ + FMT_MSC_VER >= 1900 +# define FMT_DETECTED_NOEXCEPT noexcept +#else +# define FMT_DETECTED_NOEXCEPT throw() +#endif + +#ifndef FMT_NOEXCEPT +# if FMT_EXCEPTIONS +# define FMT_NOEXCEPT FMT_DETECTED_NOEXCEPT +# else +# define FMT_NOEXCEPT +# endif +#endif + +// This is needed because GCC still uses throw() in its headers when exceptions +// are disabled. +#if FMT_GCC_VERSION +# define FMT_DTOR_NOEXCEPT FMT_DETECTED_NOEXCEPT +#else +# define FMT_DTOR_NOEXCEPT FMT_NOEXCEPT +#endif + +#ifndef FMT_BEGIN_NAMESPACE +# if FMT_HAS_FEATURE(cxx_inline_namespaces) || FMT_GCC_VERSION >= 404 || \ + FMT_MSC_VER >= 1900 +# define FMT_INLINE_NAMESPACE inline namespace +# define FMT_END_NAMESPACE }} +# else +# define FMT_INLINE_NAMESPACE namespace +# define FMT_END_NAMESPACE } using namespace v5; } +# endif +# define FMT_BEGIN_NAMESPACE namespace fmt { FMT_INLINE_NAMESPACE v5 { +#endif + +#if !defined(FMT_HEADER_ONLY) && defined(_WIN32) +# ifdef FMT_EXPORT +# define FMT_API __declspec(dllexport) +# elif defined(FMT_SHARED) +# define FMT_API __declspec(dllimport) +# endif +#endif +#ifndef FMT_API +# define FMT_API +#endif + +#ifndef FMT_ASSERT +# define FMT_ASSERT(condition, message) assert((condition) && message) +#endif + +#define FMT_DELETED = delete + +// A macro to disallow the copy construction and assignment. +#define FMT_DISALLOW_COPY_AND_ASSIGN(Type) \ + Type(const Type &) FMT_DELETED; \ + void operator=(const Type &) FMT_DELETED + +// libc++ supports string_view in pre-c++17. +#if (FMT_HAS_INCLUDE(<string_view>) && \ + (__cplusplus > 201402L || defined(_LIBCPP_VERSION))) || \ + (defined(_MSVC_LANG) && _MSVC_LANG > 201402L && _MSC_VER >= 1910) +# include <string_view> +# define FMT_USE_STD_STRING_VIEW +#elif (FMT_HAS_INCLUDE(<experimental/string_view>) && \ + __cplusplus >= 201402L) +# include <experimental/string_view> +# define FMT_USE_EXPERIMENTAL_STRING_VIEW +#endif + +// std::result_of is defined in <functional> in gcc 4.4. +#if FMT_GCC_VERSION && FMT_GCC_VERSION <= 404 +# include <functional> +#endif + +FMT_BEGIN_NAMESPACE + +namespace internal { + +// An implementation of declval for pre-C++11 compilers such as gcc 4. +template <typename T> +typename std::add_rvalue_reference<T>::type declval() FMT_NOEXCEPT; + +// Casts nonnegative integer to unsigned. +template <typename Int> +FMT_CONSTEXPR typename std::make_unsigned<Int>::type to_unsigned(Int value) { + FMT_ASSERT(value >= 0, "negative value"); + return static_cast<typename std::make_unsigned<Int>::type>(value); +} + +} + +/** + An implementation of ``std::basic_string_view`` for pre-C++17. It provides a + subset of the API. ``fmt::basic_string_view`` is used for format strings even + if ``std::string_view`` is available to prevent issues when a library is + compiled with a different ``-std`` option than the client code (which is not + recommended). + */ +template <typename Char> +class basic_string_view { + private: + const Char *data_; + size_t size_; + + public: + typedef Char char_type; + typedef const Char *iterator; + + // Standard basic_string_view type. +#if defined(FMT_USE_STD_STRING_VIEW) + typedef std::basic_string_view<Char> type; +#elif defined(FMT_USE_EXPERIMENTAL_STRING_VIEW) + typedef std::experimental::basic_string_view<Char> type; +#else + struct type { + const char *data() const { return FMT_NULL; } + size_t size() const { return 0; } + }; +#endif + + FMT_CONSTEXPR basic_string_view() FMT_NOEXCEPT : data_(FMT_NULL), size_(0) {} + + /** Constructs a string reference object from a C string and a size. */ + FMT_CONSTEXPR basic_string_view(const Char *s, size_t count) FMT_NOEXCEPT + : data_(s), size_(count) {} + + /** + \rst + Constructs a string reference object from a C string computing + the size with ``std::char_traits<Char>::length``. + \endrst + */ + basic_string_view(const Char *s) + : data_(s), size_(std::char_traits<Char>::length(s)) {} + + /** Constructs a string reference from a ``std::basic_string`` object. */ + template <typename Alloc> + FMT_CONSTEXPR basic_string_view( + const std::basic_string<Char, Alloc> &s) FMT_NOEXCEPT + : data_(s.c_str()), size_(s.size()) {} + + FMT_CONSTEXPR basic_string_view(type s) FMT_NOEXCEPT + : data_(s.data()), size_(s.size()) {} + + /** Returns a pointer to the string data. */ + const Char *data() const { return data_; } + + /** Returns the string size. */ + FMT_CONSTEXPR size_t size() const { return size_; } + + FMT_CONSTEXPR iterator begin() const { return data_; } + FMT_CONSTEXPR iterator end() const { return data_ + size_; } + + FMT_CONSTEXPR void remove_prefix(size_t n) { + data_ += n; + size_ -= n; + } + + // Lexicographically compare this string reference to other. + int compare(basic_string_view other) const { + size_t str_size = size_ < other.size_ ? size_ : other.size_; + int result = std::char_traits<Char>::compare(data_, other.data_, str_size); + if (result == 0) + result = size_ == other.size_ ? 0 : (size_ < other.size_ ? -1 : 1); + return result; + } + + friend bool operator==(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) == 0; + } + friend bool operator!=(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) != 0; + } + friend bool operator<(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) < 0; + } + friend bool operator<=(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) <= 0; + } + friend bool operator>(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) > 0; + } + friend bool operator>=(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) >= 0; + } +}; + +typedef basic_string_view<char> string_view; +typedef basic_string_view<wchar_t> wstring_view; + +template <typename Context> +class basic_format_arg; + +template <typename Context> +class basic_format_args; + +// A formatter for objects of type T. +template <typename T, typename Char = char, typename Enable = void> +struct formatter; + +namespace internal { + +/** A contiguous memory buffer with an optional growing ability. */ +template <typename T> +class basic_buffer { + private: + FMT_DISALLOW_COPY_AND_ASSIGN(basic_buffer); + + T *ptr_; + std::size_t size_; + std::size_t capacity_; + + protected: + basic_buffer(T *p = FMT_NULL, std::size_t sz = 0, std::size_t cap = 0) + FMT_NOEXCEPT: ptr_(p), size_(sz), capacity_(cap) {} + + /** Sets the buffer data and capacity. */ + void set(T *buf_data, std::size_t buf_capacity) FMT_NOEXCEPT { + ptr_ = buf_data; + capacity_ = buf_capacity; + } + + /** Increases the buffer capacity to hold at least *capacity* elements. */ + virtual void grow(std::size_t capacity) = 0; + + public: + typedef T value_type; + typedef const T &const_reference; + + virtual ~basic_buffer() {} + + T *begin() FMT_NOEXCEPT { return ptr_; } + T *end() FMT_NOEXCEPT { return ptr_ + size_; } + + /** Returns the size of this buffer. */ + std::size_t size() const FMT_NOEXCEPT { return size_; } + + /** Returns the capacity of this buffer. */ + std::size_t capacity() const FMT_NOEXCEPT { return capacity_; } + + /** Returns a pointer to the buffer data. */ + T *data() FMT_NOEXCEPT { return ptr_; } + + /** Returns a pointer to the buffer data. */ + const T *data() const FMT_NOEXCEPT { return ptr_; } + + /** + Resizes the buffer. If T is a POD type new elements may not be initialized. + */ + void resize(std::size_t new_size) { + reserve(new_size); + size_ = new_size; + } + + /** Reserves space to store at least *capacity* elements. */ + void reserve(std::size_t new_capacity) { + if (new_capacity > capacity_) + grow(new_capacity); + } + + void push_back(const T &value) { + reserve(size_ + 1); + ptr_[size_++] = value; + } + + /** Appends data to the end of the buffer. */ + template <typename U> + void append(const U *begin, const U *end); + + T &operator[](std::size_t index) { return ptr_[index]; } + const T &operator[](std::size_t index) const { return ptr_[index]; } +}; + +typedef basic_buffer<char> buffer; +typedef basic_buffer<wchar_t> wbuffer; + +// A container-backed buffer. +template <typename Container> +class container_buffer : public basic_buffer<typename Container::value_type> { + private: + Container &container_; + + protected: + void grow(std::size_t capacity) FMT_OVERRIDE { + container_.resize(capacity); + this->set(&container_[0], capacity); + } + + public: + explicit container_buffer(Container &c) + : basic_buffer<typename Container::value_type>(&c[0], c.size(), c.size()), + container_(c) {} +}; + +struct error_handler { + FMT_CONSTEXPR error_handler() {} + FMT_CONSTEXPR error_handler(const error_handler &) {} + + // This function is intentionally not constexpr to give a compile-time error. + FMT_API void on_error(const char *message); +}; + +// Formatting of wide characters and strings into a narrow output is disallowed: +// fmt::format("{}", L"test"); // error +// To fix this, use a wide format string: +// fmt::format(L"{}", L"test"); +template <typename Char> +inline void require_wchar() { + static_assert( + std::is_same<wchar_t, Char>::value, + "formatting of wide characters into a narrow output is disallowed"); +} + +template <typename Char> +struct named_arg_base; + +template <typename T, typename Char> +struct named_arg; + +template <typename T> +struct is_named_arg : std::false_type {}; + +template <typename T, typename Char> +struct is_named_arg<named_arg<T, Char>> : std::true_type {}; + +enum type { + none_type, named_arg_type, + // Integer types should go first, + int_type, uint_type, long_long_type, ulong_long_type, bool_type, char_type, + last_integer_type = char_type, + // followed by floating-point types. + double_type, long_double_type, last_numeric_type = long_double_type, + cstring_type, string_type, pointer_type, custom_type +}; + +FMT_CONSTEXPR bool is_integral(type t) { + FMT_ASSERT(t != internal::named_arg_type, "invalid argument type"); + return t > internal::none_type && t <= internal::last_integer_type; +} + +FMT_CONSTEXPR bool is_arithmetic(type t) { + FMT_ASSERT(t != internal::named_arg_type, "invalid argument type"); + return t > internal::none_type && t <= internal::last_numeric_type; +} + +template <typename T, typename Char, bool ENABLE = true> +struct convert_to_int { + enum { + value = !std::is_arithmetic<T>::value && std::is_convertible<T, int>::value + }; +}; + +template <typename Char> +struct string_value { + const Char *value; + std::size_t size; +}; + +template <typename Context> +struct custom_value { + const void *value; + void (*format)(const void *arg, Context &ctx); +}; + +// A formatting argument value. +template <typename Context> +class value { + public: + typedef typename Context::char_type char_type; + + union { + int int_value; + unsigned uint_value; + long long long_long_value; + unsigned long long ulong_long_value; + double double_value; + long double long_double_value; + const void *pointer; + string_value<char_type> string; + string_value<signed char> sstring; + string_value<unsigned char> ustring; + custom_value<Context> custom; + }; + + FMT_CONSTEXPR value(int val = 0) : int_value(val) {} + value(unsigned val) { uint_value = val; } + value(long long val) { long_long_value = val; } + value(unsigned long long val) { ulong_long_value = val; } + value(double val) { double_value = val; } + value(long double val) { long_double_value = val; } + value(const char_type *val) { string.value = val; } + value(const signed char *val) { + static_assert(std::is_same<char, char_type>::value, + "incompatible string types"); + sstring.value = val; + } + value(const unsigned char *val) { + static_assert(std::is_same<char, char_type>::value, + "incompatible string types"); + ustring.value = val; + } + value(basic_string_view<char_type> val) { + string.value = val.data(); + string.size = val.size(); + } + value(const void *val) { pointer = val; } + + template <typename T> + explicit value(const T &val) { + custom.value = &val; + custom.format = &format_custom_arg<T>; + } + + const named_arg_base<char_type> &as_named_arg() { + return *static_cast<const named_arg_base<char_type>*>(pointer); + } + + private: + // Formats an argument of a custom type, such as a user-defined class. + template <typename T> + static void format_custom_arg(const void *arg, Context &ctx) { + // Get the formatter type through the context to allow different contexts + // have different extension points, e.g. `formatter<T>` for `format` and + // `printf_formatter<T>` for `printf`. + typename Context::template formatter_type<T>::type f; + auto &&parse_ctx = ctx.parse_context(); + parse_ctx.advance_to(f.parse(parse_ctx)); + ctx.advance_to(f.format(*static_cast<const T*>(arg), ctx)); + } +}; + +template <typename Context, type TYPE> +struct typed_value : value<Context> { + static const type type_tag = TYPE; + + template <typename T> + FMT_CONSTEXPR typed_value(const T &val) : value<Context>(val) {} +}; + +template <typename Context, typename T> +FMT_CONSTEXPR basic_format_arg<Context> make_arg(const T &value); + +#define FMT_MAKE_VALUE(TAG, ArgType, ValueType) \ + template <typename C> \ + FMT_CONSTEXPR typed_value<C, TAG> make_value(ArgType val) { \ + return static_cast<ValueType>(val); \ + } + +#define FMT_MAKE_VALUE_SAME(TAG, Type) \ + template <typename C> \ + FMT_CONSTEXPR typed_value<C, TAG> make_value(Type val) { \ + return val; \ + } + +FMT_MAKE_VALUE(bool_type, bool, int) +FMT_MAKE_VALUE(int_type, short, int) +FMT_MAKE_VALUE(uint_type, unsigned short, unsigned) +FMT_MAKE_VALUE_SAME(int_type, int) +FMT_MAKE_VALUE_SAME(uint_type, unsigned) + +// To minimize the number of types we need to deal with, long is translated +// either to int or to long long depending on its size. +typedef std::conditional<sizeof(long) == sizeof(int), int, long long>::type + long_type; +FMT_MAKE_VALUE( + (sizeof(long) == sizeof(int) ? int_type : long_long_type), long, long_type) +typedef std::conditional<sizeof(unsigned long) == sizeof(unsigned), + unsigned, unsigned long long>::type ulong_type; +FMT_MAKE_VALUE( + (sizeof(unsigned long) == sizeof(unsigned) ? uint_type : ulong_long_type), + unsigned long, ulong_type) + +FMT_MAKE_VALUE_SAME(long_long_type, long long) +FMT_MAKE_VALUE_SAME(ulong_long_type, unsigned long long) +FMT_MAKE_VALUE(int_type, signed char, int) +FMT_MAKE_VALUE(uint_type, unsigned char, unsigned) +FMT_MAKE_VALUE(char_type, char, int) + +#if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED) +template <typename C> +inline typed_value<C, char_type> make_value(wchar_t val) { + require_wchar<typename C::char_type>(); + return static_cast<int>(val); +} +#endif + +FMT_MAKE_VALUE(double_type, float, double) +FMT_MAKE_VALUE_SAME(double_type, double) +FMT_MAKE_VALUE_SAME(long_double_type, long double) + +// Formatting of wide strings into a narrow buffer and multibyte strings +// into a wide buffer is disallowed (https://github.com/fmtlib/fmt/pull/606). +FMT_MAKE_VALUE(cstring_type, typename C::char_type*, + const typename C::char_type*) +FMT_MAKE_VALUE(cstring_type, const typename C::char_type*, + const typename C::char_type*) + +FMT_MAKE_VALUE(cstring_type, signed char*, const signed char*) +FMT_MAKE_VALUE_SAME(cstring_type, const signed char*) +FMT_MAKE_VALUE(cstring_type, unsigned char*, const unsigned char*) +FMT_MAKE_VALUE_SAME(cstring_type, const unsigned char*) +FMT_MAKE_VALUE_SAME(string_type, basic_string_view<typename C::char_type>) +FMT_MAKE_VALUE(string_type, + typename basic_string_view<typename C::char_type>::type, + basic_string_view<typename C::char_type>) +FMT_MAKE_VALUE(string_type, const std::basic_string<typename C::char_type>&, + basic_string_view<typename C::char_type>) +FMT_MAKE_VALUE(pointer_type, void*, const void*) +FMT_MAKE_VALUE_SAME(pointer_type, const void*) + +#if FMT_USE_NULLPTR +FMT_MAKE_VALUE(pointer_type, std::nullptr_t, const void*) +#endif + +// Formatting of arbitrary pointers is disallowed. If you want to output a +// pointer cast it to "void *" or "const void *". In particular, this forbids +// formatting of "[const] volatile char *" which is printed as bool by +// iostreams. +template <typename C, typename T> +typename std::enable_if<!std::is_same<T, typename C::char_type>::value>::type + make_value(const T *) { + static_assert(!sizeof(T), "formatting of non-void pointers is disallowed"); +} + +template <typename C, typename T> +inline typename std::enable_if< + std::is_enum<T>::value && convert_to_int<T, typename C::char_type>::value, + typed_value<C, int_type>>::type + make_value(const T &val) { return static_cast<int>(val); } + +template <typename C, typename T, typename Char = typename C::char_type> +inline typename std::enable_if< + !convert_to_int<T, Char>::value && + !std::is_convertible<T, basic_string_view<Char>>::value, + // Implicit conversion to std::string is not handled here because it's + // unsafe: https://github.com/fmtlib/fmt/issues/729 + typed_value<C, custom_type>>::type + make_value(const T &val) { return val; } + +template <typename C, typename T> +typed_value<C, named_arg_type> + make_value(const named_arg<T, typename C::char_type> &val) { + basic_format_arg<C> arg = make_arg<C>(val.value); + std::memcpy(val.data, &arg, sizeof(arg)); + return static_cast<const void*>(&val); +} + +// Maximum number of arguments with packed types. +enum { max_packed_args = 15 }; + +template <typename Context> +class arg_map; + +template <typename> +struct result_of; + +template <typename F, typename... Args> +struct result_of<F(Args...)> { + // A workaround for gcc 4.4 that doesn't allow F to be a reference. + typedef typename std::result_of< + typename std::remove_reference<F>::type(Args...)>::type type; +}; +} + +// A formatting argument. It is a trivially copyable/constructible type to +// allow storage in basic_memory_buffer. +template <typename Context> +class basic_format_arg { + private: + internal::value<Context> value_; + internal::type type_; + + template <typename ContextType, typename T> + friend FMT_CONSTEXPR basic_format_arg<ContextType> + internal::make_arg(const T &value); + + template <typename Visitor, typename Ctx> + friend FMT_CONSTEXPR typename internal::result_of<Visitor(int)>::type + visit(Visitor &&vis, basic_format_arg<Ctx> arg); + + friend class basic_format_args<Context>; + friend class internal::arg_map<Context>; + + typedef typename Context::char_type char_type; + + public: + class handle { + public: + explicit handle(internal::custom_value<Context> custom): custom_(custom) {} + + void format(Context &ctx) const { custom_.format(custom_.value, ctx); } + + private: + internal::custom_value<Context> custom_; + }; + + FMT_CONSTEXPR basic_format_arg() : type_(internal::none_type) {} + + FMT_EXPLICIT operator bool() const FMT_NOEXCEPT { + return type_ != internal::none_type; + } + + internal::type type() const { return type_; } + + bool is_integral() const { return internal::is_integral(type_); } + bool is_arithmetic() const { return internal::is_arithmetic(type_); } +}; + +// Parsing context consisting of a format string range being parsed and an +// argument counter for automatic indexing. +template <typename Char, typename ErrorHandler = internal::error_handler> +class basic_parse_context : private ErrorHandler { + private: + basic_string_view<Char> format_str_; + int next_arg_id_; + + public: + typedef Char char_type; + typedef typename basic_string_view<Char>::iterator iterator; + + explicit FMT_CONSTEXPR basic_parse_context( + basic_string_view<Char> format_str, ErrorHandler eh = ErrorHandler()) + : ErrorHandler(eh), format_str_(format_str), next_arg_id_(0) {} + + // Returns an iterator to the beginning of the format string range being + // parsed. + FMT_CONSTEXPR iterator begin() const FMT_NOEXCEPT { + return format_str_.begin(); + } + + // Returns an iterator past the end of the format string range being parsed. + FMT_CONSTEXPR iterator end() const FMT_NOEXCEPT { return format_str_.end(); } + + // Advances the begin iterator to ``it``. + FMT_CONSTEXPR void advance_to(iterator it) { + format_str_.remove_prefix(internal::to_unsigned(it - begin())); + } + + // Returns the next argument index. + FMT_CONSTEXPR unsigned next_arg_id(); + + FMT_CONSTEXPR bool check_arg_id(unsigned) { + if (next_arg_id_ > 0) { + on_error("cannot switch from automatic to manual argument indexing"); + return false; + } + next_arg_id_ = -1; + return true; + } + void check_arg_id(basic_string_view<Char>) {} + + FMT_CONSTEXPR void on_error(const char *message) { + ErrorHandler::on_error(message); + } + + FMT_CONSTEXPR ErrorHandler error_handler() const { return *this; } +}; + +typedef basic_parse_context<char> parse_context; +typedef basic_parse_context<wchar_t> wparse_context; + +namespace internal { +// A map from argument names to their values for named arguments. +template <typename Context> +class arg_map { + private: + FMT_DISALLOW_COPY_AND_ASSIGN(arg_map); + + typedef typename Context::char_type char_type; + + struct entry { + basic_string_view<char_type> name; + basic_format_arg<Context> arg; + }; + + entry *map_; + unsigned size_; + + void push_back(value<Context> val) { + const internal::named_arg_base<char_type> &named = val.as_named_arg(); + map_[size_] = entry{named.name, named.template deserialize<Context>()}; + ++size_; + } + + public: + arg_map() : map_(FMT_NULL), size_(0) {} + void init(const basic_format_args<Context> &args); + ~arg_map() { delete [] map_; } + + basic_format_arg<Context> find(basic_string_view<char_type> name) const { + // The list is unsorted, so just return the first matching name. + for (entry *it = map_, *end = map_ + size_; it != end; ++it) { + if (it->name == name) + return it->arg; + } + return basic_format_arg<Context>(); + } +}; + +template <typename OutputIt, typename Context, typename Char> +class context_base { + public: + typedef OutputIt iterator; + + private: + basic_parse_context<Char> parse_context_; + iterator out_; + basic_format_args<Context> args_; + + protected: + typedef Char char_type; + typedef basic_format_arg<Context> format_arg; + + context_base(OutputIt out, basic_string_view<char_type> format_str, + basic_format_args<Context> ctx_args) + : parse_context_(format_str), out_(out), args_(ctx_args) {} + + // Returns the argument with specified index. + format_arg do_get_arg(unsigned arg_id) { + format_arg arg = args_.get(arg_id); + if (!arg) + parse_context_.on_error("argument index out of range"); + return arg; + } + + // Checks if manual indexing is used and returns the argument with + // specified index. + format_arg get_arg(unsigned arg_id) { + return this->parse_context().check_arg_id(arg_id) ? + this->do_get_arg(arg_id) : format_arg(); + } + + public: + basic_parse_context<char_type> &parse_context() { + return parse_context_; + } + + internal::error_handler error_handler() { + return parse_context_.error_handler(); + } + + void on_error(const char *message) { parse_context_.on_error(message); } + + // Returns an iterator to the beginning of the output range. + iterator out() { return out_; } + iterator begin() { return out_; } // deprecated + + // Advances the begin iterator to ``it``. + void advance_to(iterator it) { out_ = it; } + + basic_format_args<Context> args() const { return args_; } +}; + +// Extracts a reference to the container from back_insert_iterator. +template <typename Container> +inline Container &get_container(std::back_insert_iterator<Container> it) { + typedef std::back_insert_iterator<Container> bi_iterator; + struct accessor: bi_iterator { + accessor(bi_iterator iter) : bi_iterator(iter) {} + using bi_iterator::container; + }; + return *accessor(it).container; +} +} // namespace internal + +// Formatting context. +template <typename OutputIt, typename Char> +class basic_format_context : + public internal::context_base< + OutputIt, basic_format_context<OutputIt, Char>, Char> { + public: + /** The character type for the output. */ + typedef Char char_type; + + // using formatter_type = formatter<T, char_type>; + template <typename T> + struct formatter_type { typedef formatter<T, char_type> type; }; + + private: + internal::arg_map<basic_format_context> map_; + + FMT_DISALLOW_COPY_AND_ASSIGN(basic_format_context); + + typedef internal::context_base<OutputIt, basic_format_context, Char> base; + typedef typename base::format_arg format_arg; + using base::get_arg; + + public: + using typename base::iterator; + + /** + Constructs a ``basic_format_context`` object. References to the arguments are + stored in the object so make sure they have appropriate lifetimes. + */ + basic_format_context(OutputIt out, basic_string_view<char_type> format_str, + basic_format_args<basic_format_context> ctx_args) + : base(out, format_str, ctx_args) {} + + format_arg next_arg() { + return this->do_get_arg(this->parse_context().next_arg_id()); + } + format_arg get_arg(unsigned arg_id) { return this->do_get_arg(arg_id); } + + // Checks if manual indexing is used and returns the argument with the + // specified name. + format_arg get_arg(basic_string_view<char_type> name); +}; + +template <typename Char> +struct buffer_context { + typedef basic_format_context< + std::back_insert_iterator<internal::basic_buffer<Char>>, Char> type; +}; +typedef buffer_context<char>::type format_context; +typedef buffer_context<wchar_t>::type wformat_context; + +namespace internal { +template <typename Context, typename T> +struct get_type { + typedef decltype(make_value<Context>( + declval<typename std::decay<T>::type&>())) value_type; + static const type value = value_type::type_tag; +}; + +template <typename Context> +FMT_CONSTEXPR unsigned long long get_types() { return 0; } + +template <typename Context, typename Arg, typename... Args> +FMT_CONSTEXPR unsigned long long get_types() { + return get_type<Context, Arg>::value | (get_types<Context, Args...>() << 4); +} + +template <typename Context, typename T> +FMT_CONSTEXPR basic_format_arg<Context> make_arg(const T &value) { + basic_format_arg<Context> arg; + arg.type_ = get_type<Context, T>::value; + arg.value_ = make_value<Context>(value); + return arg; +} + +template <bool IS_PACKED, typename Context, typename T> +inline typename std::enable_if<IS_PACKED, value<Context>>::type + make_arg(const T &value) { + return make_value<Context>(value); +} + +template <bool IS_PACKED, typename Context, typename T> +inline typename std::enable_if<!IS_PACKED, basic_format_arg<Context>>::type + make_arg(const T &value) { + return make_arg<Context>(value); +} +} + +/** + \rst + An array of references to arguments. It can be implicitly converted into + `~fmt::basic_format_args` for passing into type-erased formatting functions + such as `~fmt::vformat`. + \endrst + */ +template <typename Context, typename ...Args> +class format_arg_store { + private: + static const size_t NUM_ARGS = sizeof...(Args); + + // Packed is a macro on MinGW so use IS_PACKED instead. + static const bool IS_PACKED = NUM_ARGS < internal::max_packed_args; + + typedef typename std::conditional<IS_PACKED, + internal::value<Context>, basic_format_arg<Context>>::type value_type; + + // If the arguments are not packed, add one more element to mark the end. + static const size_t DATA_SIZE = + NUM_ARGS + (IS_PACKED && NUM_ARGS != 0 ? 0 : 1); + value_type data_[DATA_SIZE]; + + friend class basic_format_args<Context>; + + static FMT_CONSTEXPR long long get_types() { + return IS_PACKED ? + static_cast<long long>(internal::get_types<Context, Args...>()) : + -static_cast<long long>(NUM_ARGS); + } + + public: +#if FMT_USE_CONSTEXPR + static constexpr long long TYPES = get_types(); +#else + static const long long TYPES; +#endif + +#if (FMT_GCC_VERSION && FMT_GCC_VERSION <= 405) || \ + (FMT_MSC_VER && FMT_MSC_VER <= 1800) + // Workaround array initialization issues in gcc <= 4.5 and MSVC <= 2013. + format_arg_store(const Args &... args) { + value_type init[DATA_SIZE] = + {internal::make_arg<IS_PACKED, Context>(args)...}; + std::memcpy(data_, init, sizeof(init)); + } +#else + format_arg_store(const Args &... args) + : data_{internal::make_arg<IS_PACKED, Context>(args)...} {} +#endif +}; + +#if !FMT_USE_CONSTEXPR +template <typename Context, typename ...Args> +const long long format_arg_store<Context, Args...>::TYPES = get_types(); +#endif + +/** + \rst + Constructs an `~fmt::format_arg_store` object that contains references to + arguments and can be implicitly converted to `~fmt::format_args`. `Context` can + be omitted in which case it defaults to `~fmt::context`. + \endrst + */ +template <typename Context, typename ...Args> +inline format_arg_store<Context, Args...> + make_format_args(const Args & ... args) { + return format_arg_store<Context, Args...>(args...); +} + +template <typename ...Args> +inline format_arg_store<format_context, Args...> + make_format_args(const Args & ... args) { + return format_arg_store<format_context, Args...>(args...); +} + +/** Formatting arguments. */ +template <typename Context> +class basic_format_args { + public: + typedef unsigned size_type; + typedef basic_format_arg<Context> format_arg; + + private: + // To reduce compiled code size per formatting function call, types of first + // max_packed_args arguments are passed in the types_ field. + unsigned long long types_; + union { + // If the number of arguments is less than max_packed_args, the argument + // values are stored in values_, otherwise they are stored in args_. + // This is done to reduce compiled code size as storing larger objects + // may require more code (at least on x86-64) even if the same amount of + // data is actually copied to stack. It saves ~10% on the bloat test. + const internal::value<Context> *values_; + const format_arg *args_; + }; + + typename internal::type type(unsigned index) const { + unsigned shift = index * 4; + unsigned long long mask = 0xf; + return static_cast<typename internal::type>( + (types_ & (mask << shift)) >> shift); + } + + friend class internal::arg_map<Context>; + + void set_data(const internal::value<Context> *values) { values_ = values; } + void set_data(const format_arg *args) { args_ = args; } + + format_arg do_get(size_type index) const { + long long signed_types = static_cast<long long>(types_); + if (signed_types < 0) { + unsigned long long num_args = static_cast<unsigned long long>(-signed_types); + return index < num_args ? args_[index] : format_arg(); + } + format_arg arg; + if (index > internal::max_packed_args) + return arg; + arg.type_ = type(index); + if (arg.type_ == internal::none_type) + return arg; + internal::value<Context> &val = arg.value_; + val = values_[index]; + return arg; + } + + public: + basic_format_args() : types_(0) {} + + /** + \rst + Constructs a `basic_format_args` object from `~fmt::format_arg_store`. + \endrst + */ + template <typename... Args> + basic_format_args(const format_arg_store<Context, Args...> &store) + : types_(static_cast<unsigned long long>(store.TYPES)) { + set_data(store.data_); + } + + /** Returns the argument at specified index. */ + format_arg get(size_type index) const { + format_arg arg = do_get(index); + return arg.type_ == internal::named_arg_type ? + arg.value_.as_named_arg().template deserialize<Context>() : arg; + } + + unsigned max_size() const { + long long signed_types = static_cast<long long>(types_); + return static_cast<unsigned>( + signed_types < 0 ? + -signed_types : static_cast<long long>(internal::max_packed_args)); + } +}; + +/** An alias to ``basic_format_args<context>``. */ +// It is a separate type rather than a typedef to make symbols readable. +struct format_args: basic_format_args<format_context> { + template <typename ...Args> + format_args(Args && ... arg) + : basic_format_args<format_context>(std::forward<Args>(arg)...) {} +}; +struct wformat_args : basic_format_args<wformat_context> { + template <typename ...Args> + wformat_args(Args && ... arg) + : basic_format_args<wformat_context>(std::forward<Args>(arg)...) {} +}; + +namespace internal { +template <typename Char> +struct named_arg_base { + basic_string_view<Char> name; + + // Serialized value<context>. + mutable char data[sizeof(basic_format_arg<format_context>)]; + + named_arg_base(basic_string_view<Char> nm) : name(nm) {} + + template <typename Context> + basic_format_arg<Context> deserialize() const { + basic_format_arg<Context> arg; + std::memcpy(&arg, data, sizeof(basic_format_arg<Context>)); + return arg; + } +}; + +template <typename T, typename Char> +struct named_arg : named_arg_base<Char> { + const T &value; + + named_arg(basic_string_view<Char> name, const T &val) + : named_arg_base<Char>(name), value(val) {} +}; +} + +/** + \rst + Returns a named argument to be used in a formatting function. + + **Example**:: + + fmt::print("Elapsed time: {s:.2f} seconds", fmt::arg("s", 1.23)); + \endrst + */ +template <typename T> +inline internal::named_arg<T, char> arg(string_view name, const T &arg) { + return internal::named_arg<T, char>(name, arg); +} + +template <typename T> +inline internal::named_arg<T, wchar_t> arg(wstring_view name, const T &arg) { + return internal::named_arg<T, wchar_t>(name, arg); +} + +// This function template is deleted intentionally to disable nested named +// arguments as in ``format("{}", arg("a", arg("b", 42)))``. +template <typename S, typename T, typename Char> +void arg(S, internal::named_arg<T, Char>) FMT_DELETED; + +#ifndef FMT_EXTENDED_COLORS +// color and (v)print_colored are deprecated. +enum color { black, red, green, yellow, blue, magenta, cyan, white }; +FMT_API void vprint_colored(color c, string_view format, format_args args); +FMT_API void vprint_colored(color c, wstring_view format, wformat_args args); +template <typename... Args> +inline void print_colored(color c, string_view format_str, + const Args & ... args) { + vprint_colored(c, format_str, make_format_args(args...)); +} +template <typename... Args> +inline void print_colored(color c, wstring_view format_str, + const Args & ... args) { + vprint_colored(c, format_str, make_format_args<wformat_context>(args...)); +} +#endif + +format_context::iterator vformat_to( + internal::buffer &buf, string_view format_str, format_args args); +wformat_context::iterator vformat_to( + internal::wbuffer &buf, wstring_view format_str, wformat_args args); + +template <typename Container> +struct is_contiguous : std::false_type {}; + +template <typename Char> +struct is_contiguous<std::basic_string<Char>> : std::true_type {}; + +template <typename Char> +struct is_contiguous<internal::basic_buffer<Char>> : std::true_type {}; + +/** Formats a string and writes the output to ``out``. */ +template <typename Container> +typename std::enable_if< + is_contiguous<Container>::value, std::back_insert_iterator<Container>>::type + vformat_to(std::back_insert_iterator<Container> out, + string_view format_str, format_args args) { + auto& container = internal::get_container(out); + internal::container_buffer<Container> buf(container); + vformat_to(buf, format_str, args); + return std::back_inserter(container); +} + +template <typename Container> +typename std::enable_if< + is_contiguous<Container>::value, std::back_insert_iterator<Container>>::type + vformat_to(std::back_insert_iterator<Container> out, + wstring_view format_str, wformat_args args) { + auto& container = internal::get_container(out); + internal::container_buffer<Container> buf(container); + vformat_to(buf, format_str, args); + return std::back_inserter(container); +} + +std::string vformat(string_view format_str, format_args args); +std::wstring vformat(wstring_view format_str, wformat_args args); + +/** + \rst + Formats arguments and returns the result as a string. + + **Example**:: + + #include <fmt/core.h> + std::string message = fmt::format("The answer is {}", 42); + \endrst +*/ +template <typename... Args> +inline std::string format(string_view format_str, const Args & ... args) { + // This should be just + // return vformat(format_str, make_format_args(args...)); + // but gcc has trouble optimizing the latter, so break it down. + format_arg_store<format_context, Args...> as{args...}; + return vformat(format_str, as); +} +template <typename... Args> +inline std::wstring format(wstring_view format_str, const Args & ... args) { + format_arg_store<wformat_context, Args...> as{args...}; + return vformat(format_str, as); +} + +FMT_API void vprint(std::FILE *f, string_view format_str, format_args args); +FMT_API void vprint(std::FILE *f, wstring_view format_str, wformat_args args); + +/** + \rst + Prints formatted data to the file *f*. + + **Example**:: + + fmt::print(stderr, "Don't {}!", "panic"); + \endrst + */ +template <typename... Args> +inline void print(std::FILE *f, string_view format_str, const Args & ... args) { + format_arg_store<format_context, Args...> as(args...); + vprint(f, format_str, as); +} +/** + Prints formatted data to the file *f* which should be in wide-oriented mode set + via ``fwide(f, 1)`` or ``_setmode(_fileno(f), _O_U8TEXT)`` on Windows. + */ +template <typename... Args> +inline void print(std::FILE *f, wstring_view format_str, const Args & ... args) { + format_arg_store<wformat_context, Args...> as(args...); + vprint(f, format_str, as); +} + +FMT_API void vprint(string_view format_str, format_args args); +FMT_API void vprint(wstring_view format_str, wformat_args args); + +/** + \rst + Prints formatted data to ``stdout``. + + **Example**:: + + fmt::print("Elapsed time: {0:.2f} seconds", 1.23); + \endrst + */ +template <typename... Args> +inline void print(string_view format_str, const Args & ... args) { + format_arg_store<format_context, Args...> as{args...}; + vprint(format_str, as); +} + +template <typename... Args> +inline void print(wstring_view format_str, const Args & ... args) { + format_arg_store<wformat_context, Args...> as(args...); + vprint(format_str, as); +} +FMT_END_NAMESPACE + +#endif // FMT_CORE_H_
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fmt/include/fmt/format-inl.h Fri Jul 13 13:15:12 2018 +0200 @@ -0,0 +1,564 @@ +// Formatting library for C++ +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_FORMAT_INL_H_ +#define FMT_FORMAT_INL_H_ + +#include "format.h" + +#include <string.h> + +#include <cctype> +#include <cerrno> +#include <climits> +#include <cmath> +#include <cstdarg> +#include <cstddef> // for std::ptrdiff_t +#include <locale> + +#if defined(_WIN32) && defined(__MINGW32__) +# include <cstring> +#endif + +#if FMT_USE_WINDOWS_H +# if !defined(FMT_HEADER_ONLY) && !defined(WIN32_LEAN_AND_MEAN) +# define WIN32_LEAN_AND_MEAN +# endif +# if defined(NOMINMAX) || defined(FMT_WIN_MINMAX) +# include <windows.h> +# else +# define NOMINMAX +# include <windows.h> +# undef NOMINMAX +# endif +#endif + +#if FMT_EXCEPTIONS +# define FMT_TRY try +# define FMT_CATCH(x) catch (x) +#else +# define FMT_TRY if (true) +# define FMT_CATCH(x) if (false) +#endif + +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable: 4127) // conditional expression is constant +# pragma warning(disable: 4702) // unreachable code +// Disable deprecation warning for strerror. The latter is not called but +// MSVC fails to detect it. +# pragma warning(disable: 4996) +#endif + +// Dummy implementations of strerror_r and strerror_s called if corresponding +// system functions are not available. +inline fmt::internal::null<> strerror_r(int, char *, ...) { + return fmt::internal::null<>(); +} +inline fmt::internal::null<> strerror_s(char *, std::size_t, ...) { + return fmt::internal::null<>(); +} + +FMT_BEGIN_NAMESPACE + +namespace { + +#ifndef _MSC_VER +# define FMT_SNPRINTF snprintf +#else // _MSC_VER +inline int fmt_snprintf(char *buffer, size_t size, const char *format, ...) { + va_list args; + va_start(args, format); + int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args); + va_end(args); + return result; +} +# define FMT_SNPRINTF fmt_snprintf +#endif // _MSC_VER + +#if defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT) +# define FMT_SWPRINTF snwprintf +#else +# define FMT_SWPRINTF swprintf +#endif // defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT) + +typedef void (*FormatFunc)(internal::buffer &, int, string_view); + +// Portable thread-safe version of strerror. +// Sets buffer to point to a string describing the error code. +// This can be either a pointer to a string stored in buffer, +// or a pointer to some static immutable string. +// Returns one of the following values: +// 0 - success +// ERANGE - buffer is not large enough to store the error message +// other - failure +// Buffer should be at least of size 1. +int safe_strerror( + int error_code, char *&buffer, std::size_t buffer_size) FMT_NOEXCEPT { + FMT_ASSERT(buffer != FMT_NULL && buffer_size != 0, "invalid buffer"); + + class dispatcher { + private: + int error_code_; + char *&buffer_; + std::size_t buffer_size_; + + // A noop assignment operator to avoid bogus warnings. + void operator=(const dispatcher &) {} + + // Handle the result of XSI-compliant version of strerror_r. + int handle(int result) { + // glibc versions before 2.13 return result in errno. + return result == -1 ? errno : result; + } + + // Handle the result of GNU-specific version of strerror_r. + int handle(char *message) { + // If the buffer is full then the message is probably truncated. + if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1) + return ERANGE; + buffer_ = message; + return 0; + } + + // Handle the case when strerror_r is not available. + int handle(internal::null<>) { + return fallback(strerror_s(buffer_, buffer_size_, error_code_)); + } + + // Fallback to strerror_s when strerror_r is not available. + int fallback(int result) { + // If the buffer is full then the message is probably truncated. + return result == 0 && strlen(buffer_) == buffer_size_ - 1 ? + ERANGE : result; + } + + // Fallback to strerror if strerror_r and strerror_s are not available. + int fallback(internal::null<>) { + errno = 0; + buffer_ = strerror(error_code_); + return errno; + } + + public: + dispatcher(int err_code, char *&buf, std::size_t buf_size) + : error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {} + + int run() { + return handle(strerror_r(error_code_, buffer_, buffer_size_)); + } + }; + return dispatcher(error_code, buffer, buffer_size).run(); +} + +void format_error_code(internal::buffer &out, int error_code, + string_view message) FMT_NOEXCEPT { + // Report error code making sure that the output fits into + // inline_buffer_size to avoid dynamic memory allocation and potential + // bad_alloc. + out.resize(0); + static const char SEP[] = ": "; + static const char ERROR_STR[] = "error "; + // Subtract 2 to account for terminating null characters in SEP and ERROR_STR. + std::size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2; + typedef internal::int_traits<int>::main_type main_type; + main_type abs_value = static_cast<main_type>(error_code); + if (internal::is_negative(error_code)) { + abs_value = 0 - abs_value; + ++error_code_size; + } + error_code_size += internal::count_digits(abs_value); + writer w(out); + if (message.size() <= inline_buffer_size - error_code_size) { + w.write(message); + w.write(SEP); + } + w.write(ERROR_STR); + w.write(error_code); + assert(out.size() <= inline_buffer_size); +} + +void report_error(FormatFunc func, int error_code, + string_view message) FMT_NOEXCEPT { + memory_buffer full_message; + func(full_message, error_code, message); + // Use Writer::data instead of Writer::c_str to avoid potential memory + // allocation. + std::fwrite(full_message.data(), full_message.size(), 1, stderr); + std::fputc('\n', stderr); +} +} // namespace + +class locale { + private: + std::locale locale_; + + public: + explicit locale(std::locale loc = std::locale()) : locale_(loc) {} + std::locale get() { return locale_; } +}; + +template <typename Char> +FMT_FUNC Char internal::thousands_sep(locale_provider *lp) { + std::locale loc = lp ? lp->locale().get() : std::locale(); + return std::use_facet<std::numpunct<Char>>(loc).thousands_sep(); +} + +FMT_FUNC void system_error::init( + int err_code, string_view format_str, format_args args) { + error_code_ = err_code; + memory_buffer buffer; + format_system_error(buffer, err_code, vformat(format_str, args)); + std::runtime_error &base = *this; + base = std::runtime_error(to_string(buffer)); +} + +namespace internal { +template <typename T> +int char_traits<char>::format_float( + char *buffer, std::size_t size, const char *format, int precision, T value) { + return precision < 0 ? + FMT_SNPRINTF(buffer, size, format, value) : + FMT_SNPRINTF(buffer, size, format, precision, value); +} + +template <typename T> +int char_traits<wchar_t>::format_float( + wchar_t *buffer, std::size_t size, const wchar_t *format, int precision, + T value) { + return precision < 0 ? + FMT_SWPRINTF(buffer, size, format, value) : + FMT_SWPRINTF(buffer, size, format, precision, value); +} + +template <typename T> +const char basic_data<T>::DIGITS[] = + "0001020304050607080910111213141516171819" + "2021222324252627282930313233343536373839" + "4041424344454647484950515253545556575859" + "6061626364656667686970717273747576777879" + "8081828384858687888990919293949596979899"; + +#define FMT_POWERS_OF_10(factor) \ + factor * 10, \ + factor * 100, \ + factor * 1000, \ + factor * 10000, \ + factor * 100000, \ + factor * 1000000, \ + factor * 10000000, \ + factor * 100000000, \ + factor * 1000000000 + +template <typename T> +const uint32_t basic_data<T>::POWERS_OF_10_32[] = { + 0, FMT_POWERS_OF_10(1) +}; + +template <typename T> +const uint64_t basic_data<T>::POWERS_OF_10_64[] = { + 0, + FMT_POWERS_OF_10(1), + FMT_POWERS_OF_10(1000000000ull), + 10000000000000000000ull +}; + +// Normalized 64-bit significands of pow(10, k), for k = -348, -340, ..., 340. +// These are generated by support/compute-powers.py. +template <typename T> +const uint64_t basic_data<T>::POW10_SIGNIFICANDS[] = { + 0xfa8fd5a0081c0288, 0xbaaee17fa23ebf76, 0x8b16fb203055ac76, 0xcf42894a5dce35ea, + 0x9a6bb0aa55653b2d, 0xe61acf033d1a45df, 0xab70fe17c79ac6ca, 0xff77b1fcbebcdc4f, + 0xbe5691ef416bd60c, 0x8dd01fad907ffc3c, 0xd3515c2831559a83, 0x9d71ac8fada6c9b5, + 0xea9c227723ee8bcb, 0xaecc49914078536d, 0x823c12795db6ce57, 0xc21094364dfb5637, + 0x9096ea6f3848984f, 0xd77485cb25823ac7, 0xa086cfcd97bf97f4, 0xef340a98172aace5, + 0xb23867fb2a35b28e, 0x84c8d4dfd2c63f3b, 0xc5dd44271ad3cdba, 0x936b9fcebb25c996, + 0xdbac6c247d62a584, 0xa3ab66580d5fdaf6, 0xf3e2f893dec3f126, 0xb5b5ada8aaff80b8, + 0x87625f056c7c4a8b, 0xc9bcff6034c13053, 0x964e858c91ba2655, 0xdff9772470297ebd, + 0xa6dfbd9fb8e5b88f, 0xf8a95fcf88747d94, 0xb94470938fa89bcf, 0x8a08f0f8bf0f156b, + 0xcdb02555653131b6, 0x993fe2c6d07b7fac, 0xe45c10c42a2b3b06, 0xaa242499697392d3, + 0xfd87b5f28300ca0e, 0xbce5086492111aeb, 0x8cbccc096f5088cc, 0xd1b71758e219652c, + 0x9c40000000000000, 0xe8d4a51000000000, 0xad78ebc5ac620000, 0x813f3978f8940984, + 0xc097ce7bc90715b3, 0x8f7e32ce7bea5c70, 0xd5d238a4abe98068, 0x9f4f2726179a2245, + 0xed63a231d4c4fb27, 0xb0de65388cc8ada8, 0x83c7088e1aab65db, 0xc45d1df942711d9a, + 0x924d692ca61be758, 0xda01ee641a708dea, 0xa26da3999aef774a, 0xf209787bb47d6b85, + 0xb454e4a179dd1877, 0x865b86925b9bc5c2, 0xc83553c5c8965d3d, 0x952ab45cfa97a0b3, + 0xde469fbd99a05fe3, 0xa59bc234db398c25, 0xf6c69a72a3989f5c, 0xb7dcbf5354e9bece, + 0x88fcf317f22241e2, 0xcc20ce9bd35c78a5, 0x98165af37b2153df, 0xe2a0b5dc971f303a, + 0xa8d9d1535ce3b396, 0xfb9b7cd9a4a7443c, 0xbb764c4ca7a44410, 0x8bab8eefb6409c1a, + 0xd01fef10a657842c, 0x9b10a4e5e9913129, 0xe7109bfba19c0c9d, 0xac2820d9623bf429, + 0x80444b5e7aa7cf85, 0xbf21e44003acdd2d, 0x8e679c2f5e44ff8f, 0xd433179d9c8cb841, + 0x9e19db92b4e31ba9, 0xeb96bf6ebadf77d9, 0xaf87023b9bf0ee6b +}; + +// Binary exponents of pow(10, k), for k = -348, -340, ..., 340, corresponding +// to significands above. +template <typename T> +const int16_t basic_data<T>::POW10_EXPONENTS[] = { + -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980, -954, + -927, -901, -874, -847, -821, -794, -768, -741, -715, -688, -661, + -635, -608, -582, -555, -529, -502, -475, -449, -422, -396, -369, + -343, -316, -289, -263, -236, -210, -183, -157, -130, -103, -77, + -50, -24, 3, 30, 56, 83, 109, 136, 162, 189, 216, + 242, 269, 295, 322, 348, 375, 402, 428, 455, 481, 508, + 534, 561, 588, 614, 641, 667, 694, 720, 747, 774, 800, + 827, 853, 880, 907, 933, 960, 986, 1013, 1039, 1066 +}; + +template <typename T> const char basic_data<T>::RESET_COLOR[] = "\x1b[0m"; +template <typename T> const wchar_t basic_data<T>::WRESET_COLOR[] = L"\x1b[0m"; + +FMT_FUNC fp operator*(fp x, fp y) { + // Multiply 32-bit parts of significands. + uint64_t mask = (1ULL << 32) - 1; + uint64_t a = x.f >> 32, b = x.f & mask; + uint64_t c = y.f >> 32, d = y.f & mask; + uint64_t ac = a * c, bc = b * c, ad = a * d, bd = b * d; + // Compute mid 64-bit of result and round. + uint64_t mid = (bd >> 32) + (ad & mask) + (bc & mask) + (1U << 31); + return fp(ac + (ad >> 32) + (bc >> 32) + (mid >> 32), x.e + y.e + 64); +} + +FMT_FUNC fp get_cached_power(int min_exponent, int &pow10_exponent) { + const double one_over_log2_10 = 0.30102999566398114; // 1 / log2(10) + int index = static_cast<int>(std::ceil( + (min_exponent + fp::significand_size - 1) * one_over_log2_10)); + // Decimal exponent of the first (smallest) cached power of 10. + const int first_dec_exp = -348; + // Difference between two consecutive decimal exponents in cached powers of 10. + const int dec_exp_step = 8; + index = (index - first_dec_exp - 1) / dec_exp_step + 1; + pow10_exponent = first_dec_exp + index * dec_exp_step; + return fp(data::POW10_SIGNIFICANDS[index], data::POW10_EXPONENTS[index]); +} +} // namespace internal + +#if FMT_USE_WINDOWS_H + +FMT_FUNC internal::utf8_to_utf16::utf8_to_utf16(string_view s) { + static const char ERROR_MSG[] = "cannot convert string from UTF-8 to UTF-16"; + if (s.size() > INT_MAX) + FMT_THROW(windows_error(ERROR_INVALID_PARAMETER, ERROR_MSG)); + int s_size = static_cast<int>(s.size()); + if (s_size == 0) { + // MultiByteToWideChar does not support zero length, handle separately. + buffer_.resize(1); + buffer_[0] = 0; + return; + } + + int length = MultiByteToWideChar( + CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, FMT_NULL, 0); + if (length == 0) + FMT_THROW(windows_error(GetLastError(), ERROR_MSG)); + buffer_.resize(length + 1); + length = MultiByteToWideChar( + CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, &buffer_[0], length); + if (length == 0) + FMT_THROW(windows_error(GetLastError(), ERROR_MSG)); + buffer_[length] = 0; +} + +FMT_FUNC internal::utf16_to_utf8::utf16_to_utf8(wstring_view s) { + if (int error_code = convert(s)) { + FMT_THROW(windows_error(error_code, + "cannot convert string from UTF-16 to UTF-8")); + } +} + +FMT_FUNC int internal::utf16_to_utf8::convert(wstring_view s) { + if (s.size() > INT_MAX) + return ERROR_INVALID_PARAMETER; + int s_size = static_cast<int>(s.size()); + if (s_size == 0) { + // WideCharToMultiByte does not support zero length, handle separately. + buffer_.resize(1); + buffer_[0] = 0; + return 0; + } + + int length = WideCharToMultiByte( + CP_UTF8, 0, s.data(), s_size, FMT_NULL, 0, FMT_NULL, FMT_NULL); + if (length == 0) + return GetLastError(); + buffer_.resize(length + 1); + length = WideCharToMultiByte( + CP_UTF8, 0, s.data(), s_size, &buffer_[0], length, FMT_NULL, FMT_NULL); + if (length == 0) + return GetLastError(); + buffer_[length] = 0; + return 0; +} + +FMT_FUNC void windows_error::init( + int err_code, string_view format_str, format_args args) { + error_code_ = err_code; + memory_buffer buffer; + internal::format_windows_error(buffer, err_code, vformat(format_str, args)); + std::runtime_error &base = *this; + base = std::runtime_error(to_string(buffer)); +} + +FMT_FUNC void internal::format_windows_error( + internal::buffer &out, int error_code, string_view message) FMT_NOEXCEPT { + FMT_TRY { + wmemory_buffer buf; + buf.resize(inline_buffer_size); + for (;;) { + wchar_t *system_message = &buf[0]; + int result = FormatMessageW( + FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, + FMT_NULL, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), + system_message, static_cast<uint32_t>(buf.size()), FMT_NULL); + if (result != 0) { + utf16_to_utf8 utf8_message; + if (utf8_message.convert(system_message) == ERROR_SUCCESS) { + writer w(out); + w.write(message); + w.write(": "); + w.write(utf8_message); + return; + } + break; + } + if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) + break; // Can't get error message, report error code instead. + buf.resize(buf.size() * 2); + } + } FMT_CATCH(...) {} + format_error_code(out, error_code, message); +} + +#endif // FMT_USE_WINDOWS_H + +FMT_FUNC void format_system_error( + internal::buffer &out, int error_code, string_view message) FMT_NOEXCEPT { + FMT_TRY { + memory_buffer buf; + buf.resize(inline_buffer_size); + for (;;) { + char *system_message = &buf[0]; + int result = safe_strerror(error_code, system_message, buf.size()); + if (result == 0) { + writer w(out); + w.write(message); + w.write(": "); + w.write(system_message); + return; + } + if (result != ERANGE) + break; // Can't get error message, report error code instead. + buf.resize(buf.size() * 2); + } + } FMT_CATCH(...) {} + format_error_code(out, error_code, message); +} + +template <typename Char> +void basic_fixed_buffer<Char>::grow(std::size_t) { + FMT_THROW(std::runtime_error("buffer overflow")); +} + +FMT_FUNC void internal::error_handler::on_error(const char *message) { + FMT_THROW(format_error(message)); +} + +FMT_FUNC void report_system_error( + int error_code, fmt::string_view message) FMT_NOEXCEPT { + report_error(format_system_error, error_code, message); +} + +#if FMT_USE_WINDOWS_H +FMT_FUNC void report_windows_error( + int error_code, fmt::string_view message) FMT_NOEXCEPT { + report_error(internal::format_windows_error, error_code, message); +} +#endif + +FMT_FUNC void vprint(std::FILE *f, string_view format_str, format_args args) { + memory_buffer buffer; + vformat_to(buffer, format_str, args); + std::fwrite(buffer.data(), 1, buffer.size(), f); +} + +FMT_FUNC void vprint(std::FILE *f, wstring_view format_str, wformat_args args) { + wmemory_buffer buffer; + vformat_to(buffer, format_str, args); + std::fwrite(buffer.data(), sizeof(wchar_t), buffer.size(), f); +} + +FMT_FUNC void vprint(string_view format_str, format_args args) { + vprint(stdout, format_str, args); +} + +FMT_FUNC void vprint(wstring_view format_str, wformat_args args) { + vprint(stdout, format_str, args); +} + +#ifndef FMT_EXTENDED_COLORS +FMT_FUNC void vprint_colored(color c, string_view format, format_args args) { + char escape[] = "\x1b[30m"; + escape[3] = static_cast<char>('0' + c); + std::fputs(escape, stdout); + vprint(format, args); + std::fputs(internal::data::RESET_COLOR, stdout); +} + +FMT_FUNC void vprint_colored(color c, wstring_view format, wformat_args args) { + wchar_t escape[] = L"\x1b[30m"; + escape[3] = static_cast<wchar_t>('0' + c); + std::fputws(escape, stdout); + vprint(format, args); + std::fputws(internal::data::WRESET_COLOR, stdout); +} +#else +namespace internal { +FMT_CONSTEXPR void to_esc(uint8_t c, char out[], int offset) { + out[offset + 0] = static_cast<char>('0' + c / 100); + out[offset + 1] = static_cast<char>('0' + c / 10 % 10); + out[offset + 2] = static_cast<char>('0' + c % 10); +} +} // namespace internal + +FMT_FUNC void vprint_rgb(rgb fd, string_view format, format_args args) { + char escape_fd[] = "\x1b[38;2;000;000;000m"; + internal::to_esc(fd.r, escape_fd, 7); + internal::to_esc(fd.g, escape_fd, 11); + internal::to_esc(fd.b, escape_fd, 15); + + std::fputs(escape_fd, stdout); + vprint(format, args); + std::fputs(internal::data::RESET_COLOR, stdout); +} + +FMT_FUNC void vprint_rgb(rgb fd, rgb bg, string_view format, format_args args) { + char escape_fd[] = "\x1b[38;2;000;000;000m"; // foreground color + char escape_bg[] = "\x1b[48;2;000;000;000m"; // background color + internal::to_esc(fd.r, escape_fd, 7); + internal::to_esc(fd.g, escape_fd, 11); + internal::to_esc(fd.b, escape_fd, 15); + + internal::to_esc(bg.r, escape_bg, 7); + internal::to_esc(bg.g, escape_bg, 11); + internal::to_esc(bg.b, escape_bg, 15); + + std::fputs(escape_fd, stdout); + std::fputs(escape_bg, stdout); + vprint(format, args); + std::fputs(internal::data::RESET_COLOR, stdout); +} +#endif + +FMT_FUNC locale locale_provider::locale() { return fmt::locale(); } + +FMT_END_NAMESPACE + +#ifdef _MSC_VER +# pragma warning(pop) +#endif + +#endif // FMT_FORMAT_INL_H_
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fmt/include/fmt/format.h Fri Jul 13 13:15:12 2018 +0200 @@ -0,0 +1,3937 @@ +/* + Formatting library for C++ + + Copyright (c) 2012 - present, Victor Zverovich + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, this + list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR + ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef FMT_FORMAT_H_ +#define FMT_FORMAT_H_ + +#include <algorithm> +#include <cassert> +#include <cmath> +#include <cstring> +#include <limits> +#include <memory> +#include <stdexcept> +#include <stdint.h> + +#ifdef __clang__ +# define FMT_CLANG_VERSION (__clang_major__ * 100 + __clang_minor__) +#else +# define FMT_CLANG_VERSION 0 +#endif + +#ifdef __INTEL_COMPILER +# define FMT_ICC_VERSION __INTEL_COMPILER +#elif defined(__ICL) +# define FMT_ICC_VERSION __ICL +#else +# define FMT_ICC_VERSION 0 +#endif + +#include "core.h" + +#if FMT_GCC_VERSION >= 406 || FMT_CLANG_VERSION +# pragma GCC diagnostic push + +// Disable the warning about declaration shadowing because it affects too +// many valid cases. +# pragma GCC diagnostic ignored "-Wshadow" + +// Disable the warning about implicit conversions that may change the sign of +// an integer; silencing it otherwise would require many explicit casts. +# pragma GCC diagnostic ignored "-Wsign-conversion" +#endif + +#ifdef _SECURE_SCL +# define FMT_SECURE_SCL _SECURE_SCL +#else +# define FMT_SECURE_SCL 0 +#endif + +#if FMT_SECURE_SCL +# include <iterator> +#endif + +#ifdef __has_builtin +# define FMT_HAS_BUILTIN(x) __has_builtin(x) +#else +# define FMT_HAS_BUILTIN(x) 0 +#endif + +#ifdef __GNUC_LIBSTD__ +# define FMT_GNUC_LIBSTD_VERSION (__GNUC_LIBSTD__ * 100 + __GNUC_LIBSTD_MINOR__) +#endif + +#ifndef FMT_THROW +# if FMT_EXCEPTIONS +# if FMT_MSC_VER +FMT_BEGIN_NAMESPACE +namespace internal { +template <typename Exception> +inline void do_throw(const Exception &x) { + // Silence unreachable code warnings in MSVC because these are nearly + // impossible to fix in a generic code. + volatile bool b = true; + if (b) + throw x; +} +} +FMT_END_NAMESPACE +# define FMT_THROW(x) fmt::internal::do_throw(x) +# else +# define FMT_THROW(x) throw x +# endif +# else +# define FMT_THROW(x) do { static_cast<void>(sizeof(x)); assert(false); } while(false); +# endif +#endif + +#ifndef FMT_USE_USER_DEFINED_LITERALS +// For Intel's compiler both it and the system gcc/msc must support UDLs. +# if (FMT_HAS_FEATURE(cxx_user_literals) || \ + FMT_GCC_VERSION >= 407 || FMT_MSC_VER >= 1900) && \ + (!FMT_ICC_VERSION || FMT_ICC_VERSION >= 1500) +# define FMT_USE_USER_DEFINED_LITERALS 1 +# else +# define FMT_USE_USER_DEFINED_LITERALS 0 +# endif +#endif + +#if FMT_USE_USER_DEFINED_LITERALS && !defined(FMT_ICC_VERSION) && \ + ((FMT_GCC_VERSION >= 600 && __cplusplus >= 201402L) || \ + (defined(FMT_CLANG_VERSION) && FMT_CLANG_VERSION >= 304)) +# define FMT_UDL_TEMPLATE 1 +#else +# define FMT_UDL_TEMPLATE 0 +#endif + +#ifndef FMT_USE_EXTERN_TEMPLATES +# ifndef FMT_HEADER_ONLY +# define FMT_USE_EXTERN_TEMPLATES \ + ((FMT_CLANG_VERSION >= 209 && __cplusplus >= 201103L) || \ + (FMT_GCC_VERSION >= 303 && FMT_HAS_GXX_CXX11)) +# else +# define FMT_USE_EXTERN_TEMPLATES 0 +# endif +#endif + +#if FMT_HAS_GXX_CXX11 || FMT_HAS_FEATURE(cxx_trailing_return) || \ + FMT_MSC_VER >= 1600 +# define FMT_USE_TRAILING_RETURN 1 +#else +# define FMT_USE_TRAILING_RETURN 0 +#endif + +#if FMT_HAS_GXX_CXX11 || FMT_HAS_FEATURE(cxx_rvalue_references) || \ + FMT_MSC_VER >= 1600 +# define FMT_USE_RVALUE_REFERENCES 1 +#else +# define FMT_USE_RVALUE_REFERENCES 0 +#endif + +#ifndef FMT_USE_GRISU +# define FMT_USE_GRISU 0 +#endif + +// __builtin_clz is broken in clang with Microsoft CodeGen: +// https://github.com/fmtlib/fmt/issues/519 +#ifndef _MSC_VER +# if FMT_GCC_VERSION >= 400 || FMT_HAS_BUILTIN(__builtin_clz) +# define FMT_BUILTIN_CLZ(n) __builtin_clz(n) +# endif + +# if FMT_GCC_VERSION >= 400 || FMT_HAS_BUILTIN(__builtin_clzll) +# define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n) +# endif +#endif + +// A workaround for gcc 4.4 that doesn't support union members with ctors. +#if (FMT_GCC_VERSION && FMT_GCC_VERSION <= 404) || \ + (FMT_MSC_VER && FMT_MSC_VER <= 1800) +# define FMT_UNION struct +#else +# define FMT_UNION union +#endif + +// Some compilers masquerade as both MSVC and GCC-likes or otherwise support +// __builtin_clz and __builtin_clzll, so only define FMT_BUILTIN_CLZ using the +// MSVC intrinsics if the clz and clzll builtins are not available. +#if FMT_MSC_VER && !defined(FMT_BUILTIN_CLZLL) && !defined(_MANAGED) +# include <intrin.h> // _BitScanReverse, _BitScanReverse64 + +FMT_BEGIN_NAMESPACE +namespace internal { +// Avoid Clang with Microsoft CodeGen's -Wunknown-pragmas warning. +# ifndef __clang__ +# pragma intrinsic(_BitScanReverse) +# endif +inline uint32_t clz(uint32_t x) { + unsigned long r = 0; + _BitScanReverse(&r, x); + + assert(x != 0); + // Static analysis complains about using uninitialized data + // "r", but the only way that can happen is if "x" is 0, + // which the callers guarantee to not happen. +# pragma warning(suppress: 6102) + return 31 - r; +} +# define FMT_BUILTIN_CLZ(n) fmt::internal::clz(n) + +# if defined(_WIN64) && !defined(__clang__) +# pragma intrinsic(_BitScanReverse64) +# endif + +inline uint32_t clzll(uint64_t x) { + unsigned long r = 0; +# ifdef _WIN64 + _BitScanReverse64(&r, x); +# else + // Scan the high 32 bits. + if (_BitScanReverse(&r, static_cast<uint32_t>(x >> 32))) + return 63 - (r + 32); + + // Scan the low 32 bits. + _BitScanReverse(&r, static_cast<uint32_t>(x)); +# endif + + assert(x != 0); + // Static analysis complains about using uninitialized data + // "r", but the only way that can happen is if "x" is 0, + // which the callers guarantee to not happen. +# pragma warning(suppress: 6102) + return 63 - r; +} +# define FMT_BUILTIN_CLZLL(n) fmt::internal::clzll(n) +} +FMT_END_NAMESPACE +#endif + +FMT_BEGIN_NAMESPACE +namespace internal { + +// An equivalent of `*reinterpret_cast<Dest*>(&source)` that doesn't produce +// undefined behavior (e.g. due to type aliasing). +// Example: uint64_t d = bit_cast<uint64_t>(2.718); +template <typename Dest, typename Source> +inline Dest bit_cast(const Source& source) { + static_assert(sizeof(Dest) == sizeof(Source), "size mismatch"); + Dest dest; + std::memcpy(&dest, &source, sizeof(dest)); + return dest; +} + +// An implementation of begin and end for pre-C++11 compilers such as gcc 4. +template <typename C> +FMT_CONSTEXPR auto begin(const C &c) -> decltype(c.begin()) { + return c.begin(); +} +template <typename T, std::size_t N> +FMT_CONSTEXPR T *begin(T (&array)[N]) FMT_NOEXCEPT { return array; } +template <typename C> +FMT_CONSTEXPR auto end(const C &c) -> decltype(c.end()) { return c.end(); } +template <typename T, std::size_t N> +FMT_CONSTEXPR T *end(T (&array)[N]) FMT_NOEXCEPT { return array + N; } + +// For std::result_of in gcc 4.4. +template <typename Result> +struct function { + template <typename T> + struct result { typedef Result type; }; +}; + +struct dummy_int { + int data[2]; + operator int() const { return 0; } +}; +typedef std::numeric_limits<internal::dummy_int> fputil; + +// Dummy implementations of system functions such as signbit and ecvt called +// if the latter are not available. +inline dummy_int signbit(...) { return dummy_int(); } +inline dummy_int _ecvt_s(...) { return dummy_int(); } +inline dummy_int isinf(...) { return dummy_int(); } +inline dummy_int _finite(...) { return dummy_int(); } +inline dummy_int isnan(...) { return dummy_int(); } +inline dummy_int _isnan(...) { return dummy_int(); } + +// A handmade floating-point number f * pow(2, e). +class fp { + private: + typedef uint64_t significand_type; + + // All sizes are in bits. + static FMT_CONSTEXPR_DECL const int char_size = + std::numeric_limits<unsigned char>::digits; + // Subtract 1 to account for an implicit most significant bit in the + // normalized form. + static FMT_CONSTEXPR_DECL const int double_significand_size = + std::numeric_limits<double>::digits - 1; + static FMT_CONSTEXPR_DECL const uint64_t implicit_bit = + 1ull << double_significand_size; + + public: + significand_type f; + int e; + + static FMT_CONSTEXPR_DECL const int significand_size = + sizeof(significand_type) * char_size; + + fp(uint64_t f, int e): f(f), e(e) {} + + // Constructs fp from an IEEE754 double. It is a template to prevent compile + // errors on platforms where double is not IEEE754. + template <typename Double> + explicit fp(Double d) { + // Assume double is in the format [sign][exponent][significand]. + typedef std::numeric_limits<Double> limits; + const int double_size = sizeof(Double) * char_size; + const int exponent_size = + double_size - double_significand_size - 1; // -1 for sign + const uint64_t significand_mask = implicit_bit - 1; + const uint64_t exponent_mask = (~0ull >> 1) & ~significand_mask; + const int exponent_bias = (1 << exponent_size) - limits::max_exponent - 1; + auto u = bit_cast<uint64_t>(d); + auto biased_e = (u & exponent_mask) >> double_significand_size; + f = u & significand_mask; + if (biased_e != 0) + f += implicit_bit; + else + biased_e = 1; // Subnormals use biased exponent 1 (min exponent). + e = static_cast<int>(biased_e - exponent_bias - double_significand_size); + } + + // Normalizes the value converted from double and multiplied by (1 << SHIFT). + template <int SHIFT = 0> + void normalize() { + // Handle subnormals. + auto shifted_implicit_bit = implicit_bit << SHIFT; + while ((f & shifted_implicit_bit) == 0) { + f <<= 1; + --e; + } + // Subtract 1 to account for hidden bit. + auto offset = significand_size - double_significand_size - SHIFT - 1; + f <<= offset; + e -= offset; + } +}; + +// Returns an fp number representing x - y. Result may not be normalized. +inline fp operator-(fp x, fp y) { + FMT_ASSERT(x.f >= y.f && x.e == y.e, "invalid operands"); + return fp(x.f - y.f, x.e); +} + +// Computes an fp number r with r.f = x.f * y.f / pow(2, 64) rounded to nearest +// with half-up tie breaking, r.e = x.e + y.e + 64. Result may not be normalized. +fp operator*(fp x, fp y); + +// Returns cached power (of 10) c_k = c_k.f * pow(2, c_k.e) such that its +// (binary) exponent satisfies min_exponent <= c_k.e <= min_exponent + 3. +fp get_cached_power(int min_exponent, int &pow10_exponent); + +template <typename Allocator> +typename Allocator::value_type *allocate(Allocator& alloc, std::size_t n) { +#if __cplusplus >= 201103L || FMT_MSC_VER >= 1700 + return std::allocator_traits<Allocator>::allocate(alloc, n); +#else + return alloc.allocate(n); +#endif +} + +// A helper function to suppress bogus "conditional expression is constant" +// warnings. +template <typename T> +inline T const_check(T value) { return value; } +} // namespace internal +FMT_END_NAMESPACE + +namespace std { +// Standard permits specialization of std::numeric_limits. This specialization +// is used to resolve ambiguity between isinf and std::isinf in glibc: +// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48891 +// and the same for isnan and signbit. +template <> +class numeric_limits<fmt::internal::dummy_int> : + public std::numeric_limits<int> { + public: + // Portable version of isinf. + template <typename T> + static bool isinfinity(T x) { + using namespace fmt::internal; + // The resolution "priority" is: + // isinf macro > std::isinf > ::isinf > fmt::internal::isinf + if (const_check(sizeof(isinf(x)) != sizeof(dummy_int))) + return isinf(x) != 0; + return !_finite(static_cast<double>(x)); + } + + // Portable version of isnan. + template <typename T> + static bool isnotanumber(T x) { + using namespace fmt::internal; + if (const_check(sizeof(isnan(x)) != sizeof(fmt::internal::dummy_int))) + return isnan(x) != 0; + return _isnan(static_cast<double>(x)) != 0; + } + + // Portable version of signbit. + static bool isnegative(double x) { + using namespace fmt::internal; + if (const_check(sizeof(signbit(x)) != sizeof(fmt::internal::dummy_int))) + return signbit(x) != 0; + if (x < 0) return true; + if (!isnotanumber(x)) return false; + int dec = 0, sign = 0; + char buffer[2]; // The buffer size must be >= 2 or _ecvt_s will fail. + _ecvt_s(buffer, sizeof(buffer), x, 0, &dec, &sign); + return sign != 0; + } +}; +} // namespace std + +FMT_BEGIN_NAMESPACE +template <typename Range> +class basic_writer; + +template <typename OutputIt, typename T = typename OutputIt::value_type> +class output_range { + private: + OutputIt it_; + + // Unused yet. + typedef void sentinel; + sentinel end() const; + + public: + typedef OutputIt iterator; + typedef T value_type; + + explicit output_range(OutputIt it): it_(it) {} + OutputIt begin() const { return it_; } +}; + +// A range where begin() returns back_insert_iterator. +template <typename Container> +class back_insert_range: + public output_range<std::back_insert_iterator<Container>> { + typedef output_range<std::back_insert_iterator<Container>> base; + public: + typedef typename Container::value_type value_type; + + back_insert_range(Container &c): base(std::back_inserter(c)) {} + back_insert_range(typename base::iterator it): base(it) {} +}; + +typedef basic_writer<back_insert_range<internal::buffer>> writer; +typedef basic_writer<back_insert_range<internal::wbuffer>> wwriter; + +/** A formatting error such as invalid format string. */ +class format_error : public std::runtime_error { + public: + explicit format_error(const char *message) + : std::runtime_error(message) {} + + explicit format_error(const std::string &message) + : std::runtime_error(message) {} +}; + +namespace internal { + +#if FMT_SECURE_SCL +template <typename T> +struct checked { typedef stdext::checked_array_iterator<T*> type; }; + +// Make a checked iterator to avoid warnings on MSVC. +template <typename T> +inline stdext::checked_array_iterator<T*> make_checked(T *p, std::size_t size) { + return {p, size}; +} +#else +template <typename T> +struct checked { typedef T *type; }; +template <typename T> +inline T *make_checked(T *p, std::size_t) { return p; } +#endif + +template <typename T> +template <typename U> +void basic_buffer<T>::append(const U *begin, const U *end) { + std::size_t new_size = size_ + internal::to_unsigned(end - begin); + reserve(new_size); + std::uninitialized_copy(begin, end, + internal::make_checked(ptr_, capacity_) + size_); + size_ = new_size; +} +} // namespace internal + +// A wrapper around std::locale used to reduce compile times since <locale> +// is very heavy. +class locale; + +class locale_provider { + public: + virtual ~locale_provider() {} + virtual fmt::locale locale(); +}; + +// The number of characters to store in the basic_memory_buffer object itself +// to avoid dynamic memory allocation. +enum { inline_buffer_size = 500 }; + +/** + \rst + A dynamically growing memory buffer for trivially copyable/constructible types + with the first ``SIZE`` elements stored in the object itself. + + You can use one of the following typedefs for common character types: + + +----------------+------------------------------+ + | Type | Definition | + +================+==============================+ + | memory_buffer | basic_memory_buffer<char> | + +----------------+------------------------------+ + | wmemory_buffer | basic_memory_buffer<wchar_t> | + +----------------+------------------------------+ + + **Example**:: + + fmt::memory_buffer out; + format_to(out, "The answer is {}.", 42); + + This will write the following output to the ``out`` object: + + .. code-block:: none + + The answer is 42. + + The output can be converted to an ``std::string`` with ``to_string(out)``. + \endrst + */ +template <typename T, std::size_t SIZE = inline_buffer_size, + typename Allocator = std::allocator<T> > +class basic_memory_buffer: private Allocator, public internal::basic_buffer<T> { + private: + T store_[SIZE]; + + // Deallocate memory allocated by the buffer. + void deallocate() { + T* data = this->data(); + if (data != store_) Allocator::deallocate(data, this->capacity()); + } + + protected: + void grow(std::size_t size) FMT_OVERRIDE; + + public: + explicit basic_memory_buffer(const Allocator &alloc = Allocator()) + : Allocator(alloc) { + this->set(store_, SIZE); + } + ~basic_memory_buffer() { deallocate(); } + + private: + // Move data from other to this buffer. + void move(basic_memory_buffer &other) { + Allocator &this_alloc = *this, &other_alloc = other; + this_alloc = std::move(other_alloc); + T* data = other.data(); + std::size_t size = other.size(), capacity = other.capacity(); + if (data == other.store_) { + this->set(store_, capacity); + std::uninitialized_copy(other.store_, other.store_ + size, + internal::make_checked(store_, capacity)); + } else { + this->set(data, capacity); + // Set pointer to the inline array so that delete is not called + // when deallocating. + other.set(other.store_, 0); + } + this->resize(size); + } + + public: + /** + \rst + Constructs a :class:`fmt::basic_memory_buffer` object moving the content + of the other object to it. + \endrst + */ + basic_memory_buffer(basic_memory_buffer &&other) { + move(other); + } + + /** + \rst + Moves the content of the other ``basic_memory_buffer`` object to this one. + \endrst + */ + basic_memory_buffer &operator=(basic_memory_buffer &&other) { + assert(this != &other); + deallocate(); + move(other); + return *this; + } + + // Returns a copy of the allocator associated with this buffer. + Allocator get_allocator() const { return *this; } +}; + +template <typename T, std::size_t SIZE, typename Allocator> +void basic_memory_buffer<T, SIZE, Allocator>::grow(std::size_t size) { + std::size_t old_capacity = this->capacity(); + std::size_t new_capacity = old_capacity + old_capacity / 2; + if (size > new_capacity) + new_capacity = size; + T *old_data = this->data(); + T *new_data = internal::allocate<Allocator>(*this, new_capacity); + // The following code doesn't throw, so the raw pointer above doesn't leak. + std::uninitialized_copy(old_data, old_data + this->size(), + internal::make_checked(new_data, new_capacity)); + this->set(new_data, new_capacity); + // deallocate must not throw according to the standard, but even if it does, + // the buffer already uses the new storage and will deallocate it in + // destructor. + if (old_data != store_) + Allocator::deallocate(old_data, old_capacity); +} + +typedef basic_memory_buffer<char> memory_buffer; +typedef basic_memory_buffer<wchar_t> wmemory_buffer; + +/** + \rst + A fixed-size memory buffer. For a dynamically growing buffer use + :class:`fmt::basic_memory_buffer`. + + Trying to increase the buffer size past the initial capacity will throw + ``std::runtime_error``. + \endrst + */ +template <typename Char> +class basic_fixed_buffer : public internal::basic_buffer<Char> { + public: + /** + \rst + Constructs a :class:`fmt::basic_fixed_buffer` object for *array* of the + given size. + \endrst + */ + basic_fixed_buffer(Char *array, std::size_t size) { + this->set(array, size); + } + + /** + \rst + Constructs a :class:`fmt::basic_fixed_buffer` object for *array* of the + size known at compile time. + \endrst + */ + template <std::size_t SIZE> + explicit basic_fixed_buffer(Char (&array)[SIZE]) { + this->set(array, SIZE); + } + + protected: + FMT_API void grow(std::size_t size) FMT_OVERRIDE; +}; + +namespace internal { + +template <typename Char> +struct char_traits; + +template <> +struct char_traits<char> { + // Formats a floating-point number. + template <typename T> + FMT_API static int format_float(char *buffer, std::size_t size, + const char *format, int precision, T value); +}; + +template <> +struct char_traits<wchar_t> { + template <typename T> + FMT_API static int format_float(wchar_t *buffer, std::size_t size, + const wchar_t *format, int precision, T value); +}; + +#if FMT_USE_EXTERN_TEMPLATES +extern template int char_traits<char>::format_float<double>( + char *buffer, std::size_t size, const char* format, int precision, + double value); +extern template int char_traits<char>::format_float<long double>( + char *buffer, std::size_t size, const char* format, int precision, + long double value); + +extern template int char_traits<wchar_t>::format_float<double>( + wchar_t *buffer, std::size_t size, const wchar_t* format, int precision, + double value); +extern template int char_traits<wchar_t>::format_float<long double>( + wchar_t *buffer, std::size_t size, const wchar_t* format, int precision, + long double value); +#endif + +template <typename Container> +inline typename std::enable_if< + is_contiguous<Container>::value, + typename checked<typename Container::value_type>::type>::type + reserve(std::back_insert_iterator<Container> &it, std::size_t n) { + Container &c = internal::get_container(it); + std::size_t size = c.size(); + c.resize(size + n); + return make_checked(&c[size], n); +} + +template <typename Iterator> +inline Iterator &reserve(Iterator &it, std::size_t) { return it; } + +template <typename Char> +class null_terminating_iterator; + +template <typename Char> +FMT_CONSTEXPR_DECL const Char *pointer_from(null_terminating_iterator<Char> it); + +// An iterator that produces a null terminator on *end. This simplifies parsing +// and allows comparing the performance of processing a null-terminated string +// vs string_view. +template <typename Char> +class null_terminating_iterator { + public: + typedef std::ptrdiff_t difference_type; + typedef Char value_type; + typedef const Char* pointer; + typedef const Char& reference; + typedef std::random_access_iterator_tag iterator_category; + + null_terminating_iterator() : ptr_(0), end_(0) {} + + FMT_CONSTEXPR null_terminating_iterator(const Char *ptr, const Char *end) + : ptr_(ptr), end_(end) {} + + template <typename Range> + FMT_CONSTEXPR explicit null_terminating_iterator(const Range &r) + : ptr_(r.begin()), end_(r.end()) {} + + null_terminating_iterator &operator=(const Char *ptr) { + assert(ptr <= end_); + ptr_ = ptr; + return *this; + } + + FMT_CONSTEXPR Char operator*() const { + return ptr_ != end_ ? *ptr_ : 0; + } + + FMT_CONSTEXPR null_terminating_iterator operator++() { + ++ptr_; + return *this; + } + + FMT_CONSTEXPR null_terminating_iterator operator++(int) { + null_terminating_iterator result(*this); + ++ptr_; + return result; + } + + FMT_CONSTEXPR null_terminating_iterator operator--() { + --ptr_; + return *this; + } + + FMT_CONSTEXPR null_terminating_iterator operator+(difference_type n) { + return null_terminating_iterator(ptr_ + n, end_); + } + + FMT_CONSTEXPR null_terminating_iterator operator-(difference_type n) { + return null_terminating_iterator(ptr_ - n, end_); + } + + FMT_CONSTEXPR null_terminating_iterator operator+=(difference_type n) { + ptr_ += n; + return *this; + } + + FMT_CONSTEXPR difference_type operator-( + null_terminating_iterator other) const { + return ptr_ - other.ptr_; + } + + FMT_CONSTEXPR bool operator!=(null_terminating_iterator other) const { + return ptr_ != other.ptr_; + } + + bool operator>=(null_terminating_iterator other) const { + return ptr_ >= other.ptr_; + } + + // This should be a friend specialization pointer_from<Char> but the latter + // doesn't compile by gcc 5.1 due to a compiler bug. + template <typename CharT> + friend FMT_CONSTEXPR_DECL const CharT *pointer_from( + null_terminating_iterator<CharT> it); + + private: + const Char *ptr_; + const Char *end_; +}; + +template <typename T> +FMT_CONSTEXPR const T *pointer_from(const T *p) { return p; } + +template <typename Char> +FMT_CONSTEXPR const Char *pointer_from(null_terminating_iterator<Char> it) { + return it.ptr_; +} + +// An output iterator that counts the number of objects written to it and +// discards them. +template <typename T> +class counting_iterator { + private: + std::size_t count_; + mutable T blackhole_; + + public: + typedef std::output_iterator_tag iterator_category; + typedef T value_type; + typedef std::ptrdiff_t difference_type; + typedef T* pointer; + typedef T& reference; + typedef counting_iterator _Unchecked_type; // Mark iterator as checked. + + counting_iterator(): count_(0) {} + + std::size_t count() const { return count_; } + + counting_iterator& operator++() { + ++count_; + return *this; + } + + counting_iterator operator++(int) { + auto it = *this; + ++*this; + return it; + } + + T &operator*() const { return blackhole_; } +}; + +// An output iterator that truncates the output and counts the number of objects +// written to it. +template <typename OutputIt> +class truncating_iterator { + private: + typedef std::iterator_traits<OutputIt> traits; + + OutputIt out_; + std::size_t limit_; + std::size_t count_; + mutable typename traits::value_type blackhole_; + + public: + typedef std::output_iterator_tag iterator_category; + typedef typename traits::value_type value_type; + typedef typename traits::difference_type difference_type; + typedef typename traits::pointer pointer; + typedef typename traits::reference reference; + typedef truncating_iterator _Unchecked_type; // Mark iterator as checked. + + truncating_iterator(OutputIt out, std::size_t limit) + : out_(out), limit_(limit), count_(0) {} + + OutputIt base() const { return out_; } + std::size_t count() const { return count_; } + + truncating_iterator& operator++() { + if (count_++ < limit_) + ++out_; + return *this; + } + + truncating_iterator operator++(int) { + auto it = *this; + ++*this; + return it; + } + + reference operator*() const { return count_ < limit_ ? *out_ : blackhole_; } +}; + +// Returns true if value is negative, false otherwise. +// Same as (value < 0) but doesn't produce warnings if T is an unsigned type. +template <typename T> +FMT_CONSTEXPR typename std::enable_if< + std::numeric_limits<T>::is_signed, bool>::type is_negative(T value) { + return value < 0; +} +template <typename T> +FMT_CONSTEXPR typename std::enable_if< + !std::numeric_limits<T>::is_signed, bool>::type is_negative(T) { + return false; +} + +template <typename T> +struct int_traits { + // Smallest of uint32_t and uint64_t that is large enough to represent + // all values of T. + typedef typename std::conditional< + std::numeric_limits<T>::digits <= 32, uint32_t, uint64_t>::type main_type; +}; + +// Static data is placed in this class template to allow header-only +// configuration. +template <typename T = void> +struct FMT_API basic_data { + static const uint32_t POWERS_OF_10_32[]; + static const uint64_t POWERS_OF_10_64[]; + static const uint64_t POW10_SIGNIFICANDS[]; + static const int16_t POW10_EXPONENTS[]; + static const char DIGITS[]; + static const char RESET_COLOR[]; + static const wchar_t WRESET_COLOR[]; +}; + +#if FMT_USE_EXTERN_TEMPLATES +extern template struct basic_data<void>; +#endif + +typedef basic_data<> data; + +#ifdef FMT_BUILTIN_CLZLL +// Returns the number of decimal digits in n. Leading zeros are not counted +// except for n == 0 in which case count_digits returns 1. +inline unsigned count_digits(uint64_t n) { + // Based on http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog10 + // and the benchmark https://github.com/localvoid/cxx-benchmark-count-digits. + int t = (64 - FMT_BUILTIN_CLZLL(n | 1)) * 1233 >> 12; + return to_unsigned(t) - (n < data::POWERS_OF_10_64[t]) + 1; +} +#else +// Fallback version of count_digits used when __builtin_clz is not available. +inline unsigned count_digits(uint64_t n) { + unsigned count = 1; + for (;;) { + // Integer division is slow so do it for a group of four digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + if (n < 10) return count; + if (n < 100) return count + 1; + if (n < 1000) return count + 2; + if (n < 10000) return count + 3; + n /= 10000u; + count += 4; + } +} +#endif + +#if FMT_HAS_CPP_ATTRIBUTE(always_inline) +# define FMT_ALWAYS_INLINE __attribute__((always_inline)) +#else +# define FMT_ALWAYS_INLINE +#endif + +template <typename Handler> +inline char *lg(uint32_t n, Handler h) FMT_ALWAYS_INLINE; + +// Computes g = floor(log10(n)) and calls h.on<g>(n); +template <typename Handler> +inline char *lg(uint32_t n, Handler h) { + return n < 100 ? n < 10 ? h.template on<0>(n) : h.template on<1>(n) + : n < 1000000 + ? n < 10000 ? n < 1000 ? h.template on<2>(n) + : h.template on<3>(n) + : n < 100000 ? h.template on<4>(n) + : h.template on<5>(n) + : n < 100000000 ? n < 10000000 ? h.template on<6>(n) + : h.template on<7>(n) + : n < 1000000000 ? h.template on<8>(n) + : h.template on<9>(n); +} + +// An lg handler that formats a decimal number. +// Usage: lg(n, decimal_formatter(buffer)); +class decimal_formatter { + private: + char *buffer_; + + void write_pair(unsigned N, uint32_t index) { + std::memcpy(buffer_ + N, data::DIGITS + index * 2, 2); + } + + public: + explicit decimal_formatter(char *buf) : buffer_(buf) {} + + template <unsigned N> char *on(uint32_t u) { + if (N == 0) { + *buffer_ = static_cast<char>(u) + '0'; + } else if (N == 1) { + write_pair(0, u); + } else { + // The idea of using 4.32 fixed-point numbers is based on + // https://github.com/jeaiii/itoa + unsigned n = N - 1; + unsigned a = n / 5 * n * 53 / 16; + uint64_t t = ((1ULL << (32 + a)) / data::POWERS_OF_10_32[n] + 1 - n / 9); + t = ((t * u) >> a) + n / 5 * 4; + write_pair(0, t >> 32); + for (unsigned i = 2; i < N; i += 2) { + t = 100ULL * static_cast<uint32_t>(t); + write_pair(i, t >> 32); + } + if (N % 2 == 0) { + buffer_[N] = static_cast<char>( + (10ULL * static_cast<uint32_t>(t)) >> 32) + '0'; + } + } + return buffer_ += N + 1; + } +}; + +// An lg handler that formats a decimal number with a terminating null. +class decimal_formatter_null : public decimal_formatter { + public: + explicit decimal_formatter_null(char *buf) : decimal_formatter(buf) {} + + template <unsigned N> char *on(uint32_t u) { + char *buf = decimal_formatter::on<N>(u); + *buf = '\0'; + return buf; + } +}; + +#ifdef FMT_BUILTIN_CLZ +// Optional version of count_digits for better performance on 32-bit platforms. +inline unsigned count_digits(uint32_t n) { + int t = (32 - FMT_BUILTIN_CLZ(n | 1)) * 1233 >> 12; + return to_unsigned(t) - (n < data::POWERS_OF_10_32[t]) + 1; +} +#endif + +// A functor that doesn't add a thousands separator. +struct no_thousands_sep { + typedef char char_type; + + template <typename Char> + void operator()(Char *) {} +}; + +// A functor that adds a thousands separator. +template <typename Char> +class add_thousands_sep { + private: + basic_string_view<Char> sep_; + + // Index of a decimal digit with the least significant digit having index 0. + unsigned digit_index_; + + public: + typedef Char char_type; + + explicit add_thousands_sep(basic_string_view<Char> sep) + : sep_(sep), digit_index_(0) {} + + void operator()(Char *&buffer) { + if (++digit_index_ % 3 != 0) + return; + buffer -= sep_.size(); + std::uninitialized_copy(sep_.data(), sep_.data() + sep_.size(), + internal::make_checked(buffer, sep_.size())); + } +}; + +template <typename Char> +FMT_API Char thousands_sep(locale_provider *lp); + +// Formats a decimal unsigned integer value writing into buffer. +// thousands_sep is a functor that is called after writing each char to +// add a thousands separator if necessary. +template <typename UInt, typename Char, typename ThousandsSep> +inline Char *format_decimal(Char *buffer, UInt value, unsigned num_digits, + ThousandsSep thousands_sep) { + buffer += num_digits; + Char *end = buffer; + while (value >= 100) { + // Integer division is slow so do it for a group of two digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + unsigned index = static_cast<unsigned>((value % 100) * 2); + value /= 100; + *--buffer = data::DIGITS[index + 1]; + thousands_sep(buffer); + *--buffer = data::DIGITS[index]; + thousands_sep(buffer); + } + if (value < 10) { + *--buffer = static_cast<char>('0' + value); + return end; + } + unsigned index = static_cast<unsigned>(value * 2); + *--buffer = data::DIGITS[index + 1]; + thousands_sep(buffer); + *--buffer = data::DIGITS[index]; + return end; +} + +template <typename UInt, typename Iterator, typename ThousandsSep> +inline Iterator format_decimal( + Iterator out, UInt value, unsigned num_digits, ThousandsSep sep) { + typedef typename ThousandsSep::char_type char_type; + // Buffer should be large enough to hold all digits (digits10 + 1) and null. + char_type buffer[std::numeric_limits<UInt>::digits10 + 2]; + format_decimal(buffer, value, num_digits, sep); + return std::copy_n(buffer, num_digits, out); +} + +template <typename It, typename UInt> +inline It format_decimal(It out, UInt value, unsigned num_digits) { + return format_decimal(out, value, num_digits, no_thousands_sep()); +} + +template <unsigned BASE_BITS, typename Char, typename UInt> +inline Char *format_uint(Char *buffer, UInt value, unsigned num_digits, + bool upper = false) { + buffer += num_digits; + Char *end = buffer; + do { + const char *digits = upper ? "0123456789ABCDEF" : "0123456789abcdef"; + unsigned digit = (value & ((1 << BASE_BITS) - 1)); + *--buffer = BASE_BITS < 4 ? static_cast<char>('0' + digit) : digits[digit]; + } while ((value >>= BASE_BITS) != 0); + return end; +} + +template <unsigned BASE_BITS, typename It, typename UInt> +inline It format_uint(It out, UInt value, unsigned num_digits, + bool upper = false) { + // Buffer should be large enough to hold all digits (digits / BASE_BITS + 1) + // and null. + char buffer[std::numeric_limits<UInt>::digits / BASE_BITS + 2]; + format_uint<BASE_BITS>(buffer, value, num_digits, upper); + return std::copy_n(buffer, num_digits, out); +} + +#ifndef _WIN32 +# define FMT_USE_WINDOWS_H 0 +#elif !defined(FMT_USE_WINDOWS_H) +# define FMT_USE_WINDOWS_H 1 +#endif + +// Define FMT_USE_WINDOWS_H to 0 to disable use of windows.h. +// All the functionality that relies on it will be disabled too. +#if FMT_USE_WINDOWS_H +// A converter from UTF-8 to UTF-16. +// It is only provided for Windows since other systems support UTF-8 natively. +class utf8_to_utf16 { + private: + wmemory_buffer buffer_; + + public: + FMT_API explicit utf8_to_utf16(string_view s); + operator wstring_view() const { return wstring_view(&buffer_[0], size()); } + size_t size() const { return buffer_.size() - 1; } + const wchar_t *c_str() const { return &buffer_[0]; } + std::wstring str() const { return std::wstring(&buffer_[0], size()); } +}; + +// A converter from UTF-16 to UTF-8. +// It is only provided for Windows since other systems support UTF-8 natively. +class utf16_to_utf8 { + private: + memory_buffer buffer_; + + public: + utf16_to_utf8() {} + FMT_API explicit utf16_to_utf8(wstring_view s); + operator string_view() const { return string_view(&buffer_[0], size()); } + size_t size() const { return buffer_.size() - 1; } + const char *c_str() const { return &buffer_[0]; } + std::string str() const { return std::string(&buffer_[0], size()); } + + // Performs conversion returning a system error code instead of + // throwing exception on conversion error. This method may still throw + // in case of memory allocation error. + FMT_API int convert(wstring_view s); +}; + +FMT_API void format_windows_error(fmt::internal::buffer &out, int error_code, + fmt::string_view message) FMT_NOEXCEPT; +#endif + +template <typename T = void> +struct null {}; +} // namespace internal + +struct monostate {}; + +/** + \rst + Visits an argument dispatching to the appropriate visit method based on + the argument type. For example, if the argument type is ``double`` then + ``vis(value)`` will be called with the value of type ``double``. + \endrst + */ +template <typename Visitor, typename Context> +FMT_CONSTEXPR typename internal::result_of<Visitor(int)>::type + visit(Visitor &&vis, basic_format_arg<Context> arg) { + typedef typename Context::char_type char_type; + switch (arg.type_) { + case internal::none_type: + break; + case internal::named_arg_type: + FMT_ASSERT(false, "invalid argument type"); + break; + case internal::int_type: + return vis(arg.value_.int_value); + case internal::uint_type: + return vis(arg.value_.uint_value); + case internal::long_long_type: + return vis(arg.value_.long_long_value); + case internal::ulong_long_type: + return vis(arg.value_.ulong_long_value); + case internal::bool_type: + return vis(arg.value_.int_value != 0); + case internal::char_type: + return vis(static_cast<char_type>(arg.value_.int_value)); + case internal::double_type: + return vis(arg.value_.double_value); + case internal::long_double_type: + return vis(arg.value_.long_double_value); + case internal::cstring_type: + return vis(arg.value_.string.value); + case internal::string_type: + return vis(basic_string_view<char_type>( + arg.value_.string.value, arg.value_.string.size)); + case internal::pointer_type: + return vis(arg.value_.pointer); + case internal::custom_type: + return vis(typename basic_format_arg<Context>::handle(arg.value_.custom)); + } + return vis(monostate()); +} + +enum alignment { + ALIGN_DEFAULT, ALIGN_LEFT, ALIGN_RIGHT, ALIGN_CENTER, ALIGN_NUMERIC +}; + +// Flags. +enum {SIGN_FLAG = 1, PLUS_FLAG = 2, MINUS_FLAG = 4, HASH_FLAG = 8}; + +enum format_spec_tag {fill_tag, align_tag, width_tag, type_tag}; + +// Format specifier. +template <typename T, format_spec_tag> +class format_spec { + private: + T value_; + + public: + typedef T value_type; + + explicit format_spec(T value) : value_(value) {} + + T value() const { return value_; } +}; + +// template <typename Char> +// typedef format_spec<Char, fill_tag> fill_spec; +template <typename Char> +class fill_spec : public format_spec<Char, fill_tag> { + public: + explicit fill_spec(Char value) : format_spec<Char, fill_tag>(value) {} +}; + +typedef format_spec<unsigned, width_tag> width_spec; +typedef format_spec<char, type_tag> type_spec; + +// An empty format specifier. +struct empty_spec {}; + +// An alignment specifier. +struct align_spec : empty_spec { + unsigned width_; + // Fill is always wchar_t and cast to char if necessary to avoid having + // two specialization of AlignSpec and its subclasses. + wchar_t fill_; + alignment align_; + + FMT_CONSTEXPR align_spec( + unsigned width, wchar_t fill, alignment align = ALIGN_DEFAULT) + : width_(width), fill_(fill), align_(align) {} + + FMT_CONSTEXPR unsigned width() const { return width_; } + FMT_CONSTEXPR wchar_t fill() const { return fill_; } + FMT_CONSTEXPR alignment align() const { return align_; } + + int precision() const { return -1; } +}; + +// Format specifiers. +template <typename Char> +class basic_format_specs : public align_spec { + public: + unsigned flags_; + int precision_; + Char type_; + + FMT_CONSTEXPR basic_format_specs( + unsigned width = 0, char type = 0, wchar_t fill = ' ') + : align_spec(width, fill), flags_(0), precision_(-1), type_(type) {} + + FMT_CONSTEXPR bool flag(unsigned f) const { return (flags_ & f) != 0; } + FMT_CONSTEXPR int precision() const { return precision_; } + FMT_CONSTEXPR Char type() const { return type_; } +}; + +typedef basic_format_specs<char> format_specs; + +template <typename Char, typename ErrorHandler> +FMT_CONSTEXPR unsigned basic_parse_context<Char, ErrorHandler>::next_arg_id() { + if (next_arg_id_ >= 0) + return internal::to_unsigned(next_arg_id_++); + on_error("cannot switch from manual to automatic argument indexing"); + return 0; +} + +struct format_string {}; + +namespace internal { + +template <typename Char, typename Handler> +FMT_CONSTEXPR void handle_int_type_spec(Char spec, Handler &&handler) { + switch (spec) { + case 0: case 'd': + handler.on_dec(); + break; + case 'x': case 'X': + handler.on_hex(); + break; + case 'b': case 'B': + handler.on_bin(); + break; + case 'o': + handler.on_oct(); + break; + case 'n': + handler.on_num(); + break; + default: + handler.on_error(); + } +} + +template <typename Char, typename Handler> +FMT_CONSTEXPR void handle_float_type_spec(Char spec, Handler &&handler) { + switch (spec) { + case 0: case 'g': case 'G': + handler.on_general(); + break; + case 'e': case 'E': + handler.on_exp(); + break; + case 'f': case 'F': + handler.on_fixed(); + break; + case 'a': case 'A': + handler.on_hex(); + break; + default: + handler.on_error(); + break; + } +} + +template <typename Char, typename Handler> +FMT_CONSTEXPR void handle_char_specs( + const basic_format_specs<Char> &specs, Handler &&handler) { + if (specs.type() && specs.type() != 'c') { + handler.on_int(); + return; + } + if (specs.align() == ALIGN_NUMERIC || specs.flag(~0u) != 0) + handler.on_error("invalid format specifier for char"); + handler.on_char(); +} + +template <typename Char, typename Handler> +FMT_CONSTEXPR void handle_cstring_type_spec(Char spec, Handler &&handler) { + if (spec == 0 || spec == 's') + handler.on_string(); + else if (spec == 'p') + handler.on_pointer(); + else + handler.on_error("invalid type specifier"); +} + +template <typename Char, typename ErrorHandler> +FMT_CONSTEXPR void check_string_type_spec(Char spec, ErrorHandler &&eh) { + if (spec != 0 && spec != 's') + eh.on_error("invalid type specifier"); +} + +template <typename Char, typename ErrorHandler> +FMT_CONSTEXPR void check_pointer_type_spec(Char spec, ErrorHandler &&eh) { + if (spec != 0 && spec != 'p') + eh.on_error("invalid type specifier"); +} + +template <typename ErrorHandler> +class int_type_checker : private ErrorHandler { + public: + FMT_CONSTEXPR explicit int_type_checker(ErrorHandler eh) : ErrorHandler(eh) {} + + FMT_CONSTEXPR void on_dec() {} + FMT_CONSTEXPR void on_hex() {} + FMT_CONSTEXPR void on_bin() {} + FMT_CONSTEXPR void on_oct() {} + FMT_CONSTEXPR void on_num() {} + + FMT_CONSTEXPR void on_error() { + ErrorHandler::on_error("invalid type specifier"); + } +}; + +template <typename ErrorHandler> +class float_type_checker : private ErrorHandler { + public: + FMT_CONSTEXPR explicit float_type_checker(ErrorHandler eh) + : ErrorHandler(eh) {} + + FMT_CONSTEXPR void on_general() {} + FMT_CONSTEXPR void on_exp() {} + FMT_CONSTEXPR void on_fixed() {} + FMT_CONSTEXPR void on_hex() {} + + FMT_CONSTEXPR void on_error() { + ErrorHandler::on_error("invalid type specifier"); + } +}; + +template <typename ErrorHandler, typename CharType> +class char_specs_checker : public ErrorHandler { + private: + CharType type_; + + public: + FMT_CONSTEXPR char_specs_checker(CharType type, ErrorHandler eh) + : ErrorHandler(eh), type_(type) {} + + FMT_CONSTEXPR void on_int() { + handle_int_type_spec(type_, int_type_checker<ErrorHandler>(*this)); + } + FMT_CONSTEXPR void on_char() {} +}; + +template <typename ErrorHandler> +class cstring_type_checker : public ErrorHandler { + public: + FMT_CONSTEXPR explicit cstring_type_checker(ErrorHandler eh) + : ErrorHandler(eh) {} + + FMT_CONSTEXPR void on_string() {} + FMT_CONSTEXPR void on_pointer() {} +}; + +template <typename Context> +void arg_map<Context>::init(const basic_format_args<Context> &args) { + if (map_) + return; + map_ = new entry[args.max_size()]; + bool use_values = args.type(max_packed_args - 1) == internal::none_type; + if (use_values) { + for (unsigned i = 0;/*nothing*/; ++i) { + internal::type arg_type = args.type(i); + switch (arg_type) { + case internal::none_type: + return; + case internal::named_arg_type: + push_back(args.values_[i]); + break; + default: + break; // Do nothing. + } + } + return; + } + for (unsigned i = 0; ; ++i) { + switch (args.args_[i].type_) { + case internal::none_type: + return; + case internal::named_arg_type: + push_back(args.args_[i].value_); + break; + default: + break; // Do nothing. + } + } +} + +template <typename Range> +class arg_formatter_base { + public: + typedef typename Range::value_type char_type; + typedef decltype(internal::declval<Range>().begin()) iterator; + typedef basic_format_specs<char_type> format_specs; + + private: + typedef basic_writer<Range> writer_type; + writer_type writer_; + format_specs &specs_; + + FMT_DISALLOW_COPY_AND_ASSIGN(arg_formatter_base); + + struct char_writer { + char_type value; + template <typename It> + void operator()(It &&it) const { *it++ = value; } + }; + + void write_char(char_type value) { + writer_.write_padded(1, specs_, char_writer{value}); + } + + void write_pointer(const void *p) { + format_specs specs = specs_; + specs.flags_ = HASH_FLAG; + specs.type_ = 'x'; + writer_.write_int(reinterpret_cast<uintptr_t>(p), specs); + } + + protected: + writer_type &writer() { return writer_; } + format_specs &spec() { return specs_; } + iterator out() { return writer_.out(); } + + void write(bool value) { + writer_.write_str(string_view(value ? "true" : "false"), specs_); + } + + void write(const char_type *value) { + if (!value) + FMT_THROW(format_error("string pointer is null")); + auto length = std::char_traits<char_type>::length(value); + writer_.write_str(basic_string_view<char_type>(value, length), specs_); + } + + public: + arg_formatter_base(Range r, format_specs &s): writer_(r), specs_(s) {} + + iterator operator()(monostate) { + FMT_ASSERT(false, "invalid argument type"); + return out(); + } + + template <typename T> + typename std::enable_if<std::is_integral<T>::value, iterator>::type + operator()(T value) { + // MSVC2013 fails to compile separate overloads for bool and char_type so + // use std::is_same instead. + if (std::is_same<T, bool>::value) { + if (specs_.type_) + return (*this)(value ? 1 : 0); + write(value != 0); + } else if (std::is_same<T, char_type>::value) { + internal::handle_char_specs( + specs_, char_spec_handler(*this, static_cast<char_type>(value))); + } else { + writer_.write_int(value, specs_); + } + return out(); + } + + template <typename T> + typename std::enable_if<std::is_floating_point<T>::value, iterator>::type + operator()(T value) { + writer_.write_double(value, specs_); + return out(); + } + + struct char_spec_handler : internal::error_handler { + arg_formatter_base &formatter; + char_type value; + + char_spec_handler(arg_formatter_base& f, char_type val) + : formatter(f), value(val) {} + + void on_int() { formatter.writer_.write_int(value, formatter.specs_); } + void on_char() { formatter.write_char(value); } + }; + + struct cstring_spec_handler : internal::error_handler { + arg_formatter_base &formatter; + const char_type *value; + + cstring_spec_handler(arg_formatter_base &f, const char_type *val) + : formatter(f), value(val) {} + + void on_string() { formatter.write(value); } + void on_pointer() { formatter.write_pointer(value); } + }; + + iterator operator()(const char_type *value) { + internal::handle_cstring_type_spec( + specs_.type_, cstring_spec_handler(*this, value)); + return out(); + } + + iterator operator()(basic_string_view<char_type> value) { + internal::check_string_type_spec(specs_.type_, internal::error_handler()); + writer_.write_str(value, specs_); + return out(); + } + + iterator operator()(const void *value) { + check_pointer_type_spec(specs_.type_, internal::error_handler()); + write_pointer(value); + return out(); + } +}; + +template <typename S> +struct is_format_string: + std::integral_constant<bool, std::is_base_of<format_string, S>::value> {}; + +template <typename Char> +FMT_CONSTEXPR bool is_name_start(Char c) { + return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c; +} + +// Parses the input as an unsigned integer. This function assumes that the +// first character is a digit and presence of a non-digit character at the end. +// it: an iterator pointing to the beginning of the input range. +template <typename Iterator, typename ErrorHandler> +FMT_CONSTEXPR unsigned parse_nonnegative_int(Iterator &it, ErrorHandler &&eh) { + assert('0' <= *it && *it <= '9'); + unsigned value = 0; + // Convert to unsigned to prevent a warning. + unsigned max_int = (std::numeric_limits<int>::max)(); + unsigned big = max_int / 10; + do { + // Check for overflow. + if (value > big) { + value = max_int + 1; + break; + } + value = value * 10 + unsigned(*it - '0'); + // Workaround for MSVC "setup_exception stack overflow" error: + auto next = it; + ++next; + it = next; + } while ('0' <= *it && *it <= '9'); + if (value > max_int) + eh.on_error("number is too big"); + return value; +} + +template <typename Char, typename Context> +class custom_formatter: public function<bool> { + private: + Context &ctx_; + + public: + explicit custom_formatter(Context &ctx): ctx_(ctx) {} + + bool operator()(typename basic_format_arg<Context>::handle h) const { + h.format(ctx_); + return true; + } + + template <typename T> + bool operator()(T) const { return false; } +}; + +template <typename T> +struct is_integer { + enum { + value = std::is_integral<T>::value && !std::is_same<T, bool>::value && + !std::is_same<T, char>::value && !std::is_same<T, wchar_t>::value + }; +}; + +template <typename ErrorHandler> +class width_checker: public function<unsigned long long> { + public: + explicit FMT_CONSTEXPR width_checker(ErrorHandler &eh) : handler_(eh) {} + + template <typename T> + FMT_CONSTEXPR + typename std::enable_if< + is_integer<T>::value, unsigned long long>::type operator()(T value) { + if (is_negative(value)) + handler_.on_error("negative width"); + return static_cast<unsigned long long>(value); + } + + template <typename T> + FMT_CONSTEXPR typename std::enable_if< + !is_integer<T>::value, unsigned long long>::type operator()(T) { + handler_.on_error("width is not integer"); + return 0; + } + + private: + ErrorHandler &handler_; +}; + +template <typename ErrorHandler> +class precision_checker: public function<unsigned long long> { + public: + explicit FMT_CONSTEXPR precision_checker(ErrorHandler &eh) : handler_(eh) {} + + template <typename T> + FMT_CONSTEXPR typename std::enable_if< + is_integer<T>::value, unsigned long long>::type operator()(T value) { + if (is_negative(value)) + handler_.on_error("negative precision"); + return static_cast<unsigned long long>(value); + } + + template <typename T> + FMT_CONSTEXPR typename std::enable_if< + !is_integer<T>::value, unsigned long long>::type operator()(T) { + handler_.on_error("precision is not integer"); + return 0; + } + + private: + ErrorHandler &handler_; +}; + +// A format specifier handler that sets fields in basic_format_specs. +template <typename Char> +class specs_setter { + public: + explicit FMT_CONSTEXPR specs_setter(basic_format_specs<Char> &specs): + specs_(specs) {} + + FMT_CONSTEXPR specs_setter(const specs_setter &other) : specs_(other.specs_) {} + + FMT_CONSTEXPR void on_align(alignment align) { specs_.align_ = align; } + FMT_CONSTEXPR void on_fill(Char fill) { specs_.fill_ = fill; } + FMT_CONSTEXPR void on_plus() { specs_.flags_ |= SIGN_FLAG | PLUS_FLAG; } + FMT_CONSTEXPR void on_minus() { specs_.flags_ |= MINUS_FLAG; } + FMT_CONSTEXPR void on_space() { specs_.flags_ |= SIGN_FLAG; } + FMT_CONSTEXPR void on_hash() { specs_.flags_ |= HASH_FLAG; } + + FMT_CONSTEXPR void on_zero() { + specs_.align_ = ALIGN_NUMERIC; + specs_.fill_ = '0'; + } + + FMT_CONSTEXPR void on_width(unsigned width) { specs_.width_ = width; } + FMT_CONSTEXPR void on_precision(unsigned precision) { + specs_.precision_ = static_cast<int>(precision); + } + FMT_CONSTEXPR void end_precision() {} + + FMT_CONSTEXPR void on_type(Char type) { specs_.type_ = type; } + + protected: + basic_format_specs<Char> &specs_; +}; + +// A format specifier handler that checks if specifiers are consistent with the +// argument type. +template <typename Handler> +class specs_checker : public Handler { + public: + FMT_CONSTEXPR specs_checker(const Handler& handler, internal::type arg_type) + : Handler(handler), arg_type_(arg_type) {} + + FMT_CONSTEXPR specs_checker(const specs_checker &other) + : Handler(other), arg_type_(other.arg_type_) {} + + FMT_CONSTEXPR void on_align(alignment align) { + if (align == ALIGN_NUMERIC) + require_numeric_argument(); + Handler::on_align(align); + } + + FMT_CONSTEXPR void on_plus() { + check_sign(); + Handler::on_plus(); + } + + FMT_CONSTEXPR void on_minus() { + check_sign(); + Handler::on_minus(); + } + + FMT_CONSTEXPR void on_space() { + check_sign(); + Handler::on_space(); + } + + FMT_CONSTEXPR void on_hash() { + require_numeric_argument(); + Handler::on_hash(); + } + + FMT_CONSTEXPR void on_zero() { + require_numeric_argument(); + Handler::on_zero(); + } + + FMT_CONSTEXPR void end_precision() { + if (is_integral(arg_type_) || arg_type_ == pointer_type) + this->on_error("precision not allowed for this argument type"); + } + + private: + FMT_CONSTEXPR void require_numeric_argument() { + if (!is_arithmetic(arg_type_)) + this->on_error("format specifier requires numeric argument"); + } + + FMT_CONSTEXPR void check_sign() { + require_numeric_argument(); + if (is_integral(arg_type_) && arg_type_ != int_type && + arg_type_ != long_long_type && arg_type_ != internal::char_type) { + this->on_error("format specifier requires signed argument"); + } + } + + internal::type arg_type_; +}; + +template <template <typename> class Handler, typename T, + typename Context, typename ErrorHandler> +FMT_CONSTEXPR void set_dynamic_spec( + T &value, basic_format_arg<Context> arg, ErrorHandler eh) { + unsigned long long big_value = visit(Handler<ErrorHandler>(eh), arg); + if (big_value > (std::numeric_limits<int>::max)()) + eh.on_error("number is too big"); + value = static_cast<T>(big_value); +} + +struct auto_id {}; + +// The standard format specifier handler with checking. +template <typename Context> +class specs_handler: public specs_setter<typename Context::char_type> { + public: + typedef typename Context::char_type char_type; + + FMT_CONSTEXPR specs_handler(basic_format_specs<char_type> &specs, Context &ctx) + : specs_setter<char_type>(specs), context_(ctx) {} + + template <typename Id> + FMT_CONSTEXPR void on_dynamic_width(Id arg_id) { + set_dynamic_spec<width_checker>( + this->specs_.width_, get_arg(arg_id), context_.error_handler()); + } + + template <typename Id> + FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) { + set_dynamic_spec<precision_checker>( + this->specs_.precision_, get_arg(arg_id), context_.error_handler()); + } + + void on_error(const char *message) { + context_.on_error(message); + } + + private: + FMT_CONSTEXPR basic_format_arg<Context> get_arg(auto_id) { + return context_.next_arg(); + } + + template <typename Id> + FMT_CONSTEXPR basic_format_arg<Context> get_arg(Id arg_id) { + context_.parse_context().check_arg_id(arg_id); + return context_.get_arg(arg_id); + } + + Context &context_; +}; + +// An argument reference. +template <typename Char> +struct arg_ref { + enum Kind { NONE, INDEX, NAME }; + + FMT_CONSTEXPR arg_ref() : kind(NONE), index(0) {} + FMT_CONSTEXPR explicit arg_ref(unsigned index) : kind(INDEX), index(index) {} + explicit arg_ref(basic_string_view<Char> name) : kind(NAME), name(name) {} + + FMT_CONSTEXPR arg_ref &operator=(unsigned idx) { + kind = INDEX; + index = idx; + return *this; + } + + Kind kind; + FMT_UNION { + unsigned index; + basic_string_view<Char> name; + }; +}; + +// Format specifiers with width and precision resolved at formatting rather +// than parsing time to allow re-using the same parsed specifiers with +// differents sets of arguments (precompilation of format strings). +template <typename Char> +struct dynamic_format_specs : basic_format_specs<Char> { + arg_ref<Char> width_ref; + arg_ref<Char> precision_ref; +}; + +// Format spec handler that saves references to arguments representing dynamic +// width and precision to be resolved at formatting time. +template <typename ParseContext> +class dynamic_specs_handler : + public specs_setter<typename ParseContext::char_type> { + public: + typedef typename ParseContext::char_type char_type; + + FMT_CONSTEXPR dynamic_specs_handler( + dynamic_format_specs<char_type> &specs, ParseContext &ctx) + : specs_setter<char_type>(specs), specs_(specs), context_(ctx) {} + + FMT_CONSTEXPR dynamic_specs_handler(const dynamic_specs_handler &other) + : specs_setter<char_type>(other), + specs_(other.specs_), context_(other.context_) {} + + template <typename Id> + FMT_CONSTEXPR void on_dynamic_width(Id arg_id) { + specs_.width_ref = make_arg_ref(arg_id); + } + + template <typename Id> + FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) { + specs_.precision_ref = make_arg_ref(arg_id); + } + + FMT_CONSTEXPR void on_error(const char *message) { + context_.on_error(message); + } + + private: + typedef arg_ref<char_type> arg_ref_type; + + template <typename Id> + FMT_CONSTEXPR arg_ref_type make_arg_ref(Id arg_id) { + context_.check_arg_id(arg_id); + return arg_ref_type(arg_id); + } + + FMT_CONSTEXPR arg_ref_type make_arg_ref(auto_id) { + return arg_ref_type(context_.next_arg_id()); + } + + dynamic_format_specs<char_type> &specs_; + ParseContext &context_; +}; + +template <typename Iterator, typename IDHandler> +FMT_CONSTEXPR Iterator parse_arg_id(Iterator it, IDHandler &&handler) { + typedef typename std::iterator_traits<Iterator>::value_type char_type; + char_type c = *it; + if (c == '}' || c == ':') { + handler(); + return it; + } + if (c >= '0' && c <= '9') { + unsigned index = parse_nonnegative_int(it, handler); + if (*it != '}' && *it != ':') { + handler.on_error("invalid format string"); + return it; + } + handler(index); + return it; + } + if (!is_name_start(c)) { + handler.on_error("invalid format string"); + return it; + } + auto start = it; + do { + c = *++it; + } while (is_name_start(c) || ('0' <= c && c <= '9')); + handler(basic_string_view<char_type>(pointer_from(start), to_unsigned(it - start))); + return it; +} + +// Adapts SpecHandler to IDHandler API for dynamic width. +template <typename SpecHandler, typename Char> +struct width_adapter { + explicit FMT_CONSTEXPR width_adapter(SpecHandler &h) : handler(h) {} + + FMT_CONSTEXPR void operator()() { handler.on_dynamic_width(auto_id()); } + FMT_CONSTEXPR void operator()(unsigned id) { handler.on_dynamic_width(id); } + FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { + handler.on_dynamic_width(id); + } + + FMT_CONSTEXPR void on_error(const char *message) { + handler.on_error(message); + } + + SpecHandler &handler; +}; + +// Adapts SpecHandler to IDHandler API for dynamic precision. +template <typename SpecHandler, typename Char> +struct precision_adapter { + explicit FMT_CONSTEXPR precision_adapter(SpecHandler &h) : handler(h) {} + + FMT_CONSTEXPR void operator()() { handler.on_dynamic_precision(auto_id()); } + FMT_CONSTEXPR void operator()(unsigned id) { + handler.on_dynamic_precision(id); + } + FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { + handler.on_dynamic_precision(id); + } + + FMT_CONSTEXPR void on_error(const char *message) { handler.on_error(message); } + + SpecHandler &handler; +}; + +// Parses standard format specifiers and sends notifications about parsed +// components to handler. +// it: an iterator pointing to the beginning of a null-terminated range of +// characters, possibly emulated via null_terminating_iterator, representing +// format specifiers. +template <typename Iterator, typename SpecHandler> +FMT_CONSTEXPR Iterator parse_format_specs(Iterator it, SpecHandler &&handler) { + typedef typename std::iterator_traits<Iterator>::value_type char_type; + char_type c = *it; + if (c == '}' || !c) + return it; + + // Parse fill and alignment. + alignment align = ALIGN_DEFAULT; + int i = 1; + do { + auto p = it + i; + switch (*p) { + case '<': + align = ALIGN_LEFT; + break; + case '>': + align = ALIGN_RIGHT; + break; + case '=': + align = ALIGN_NUMERIC; + break; + case '^': + align = ALIGN_CENTER; + break; + } + if (align != ALIGN_DEFAULT) { + if (p != it) { + if (c == '{') { + handler.on_error("invalid fill character '{'"); + return it; + } + it += 2; + handler.on_fill(c); + } else ++it; + handler.on_align(align); + break; + } + } while (--i >= 0); + + // Parse sign. + switch (*it) { + case '+': + handler.on_plus(); + ++it; + break; + case '-': + handler.on_minus(); + ++it; + break; + case ' ': + handler.on_space(); + ++it; + break; + } + + if (*it == '#') { + handler.on_hash(); + ++it; + } + + // Parse zero flag. + if (*it == '0') { + handler.on_zero(); + ++it; + } + + // Parse width. + if ('0' <= *it && *it <= '9') { + handler.on_width(parse_nonnegative_int(it, handler)); + } else if (*it == '{') { + it = parse_arg_id(it + 1, width_adapter<SpecHandler, char_type>(handler)); + if (*it++ != '}') { + handler.on_error("invalid format string"); + return it; + } + } + + // Parse precision. + if (*it == '.') { + ++it; + if ('0' <= *it && *it <= '9') { + handler.on_precision(parse_nonnegative_int(it, handler)); + } else if (*it == '{') { + it = parse_arg_id( + it + 1, precision_adapter<SpecHandler, char_type>(handler)); + if (*it++ != '}') { + handler.on_error("invalid format string"); + return it; + } + } else { + handler.on_error("missing precision specifier"); + return it; + } + handler.end_precision(); + } + + // Parse type. + if (*it != '}' && *it) + handler.on_type(*it++); + return it; +} + +template <typename Handler, typename Char> +struct id_adapter { + FMT_CONSTEXPR explicit id_adapter(Handler &h): handler(h) {} + + FMT_CONSTEXPR void operator()() { handler.on_arg_id(); } + FMT_CONSTEXPR void operator()(unsigned id) { handler.on_arg_id(id); } + FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { + handler.on_arg_id(id); + } + + FMT_CONSTEXPR void on_error(const char *message) { + handler.on_error(message); + } + + Handler &handler; +}; + +template <typename Iterator, typename Handler> +FMT_CONSTEXPR void parse_format_string(Iterator it, Handler &&handler) { + typedef typename std::iterator_traits<Iterator>::value_type char_type; + auto start = it; + while (*it) { + char_type ch = *it++; + if (ch != '{' && ch != '}') continue; + if (*it == ch) { + handler.on_text(start, it); + start = ++it; + continue; + } + if (ch == '}') { + handler.on_error("unmatched '}' in format string"); + return; + } + handler.on_text(start, it - 1); + + it = parse_arg_id(it, id_adapter<Handler, char_type>(handler)); + if (*it == '}') { + handler.on_replacement_field(it); + } else if (*it == ':') { + ++it; + it = handler.on_format_specs(it); + if (*it != '}') { + handler.on_error("unknown format specifier"); + return; + } + } else { + handler.on_error("missing '}' in format string"); + return; + } + + start = ++it; + } + handler.on_text(start, it); +} + +template <typename T, typename ParseContext> +FMT_CONSTEXPR const typename ParseContext::char_type * + parse_format_specs(ParseContext &ctx) { + // GCC 7.2 requires initializer. + formatter<T, typename ParseContext::char_type> f{}; + return f.parse(ctx); +} + +template <typename Char, typename ErrorHandler, typename... Args> +class format_string_checker { + public: + explicit FMT_CONSTEXPR format_string_checker( + basic_string_view<Char> format_str, ErrorHandler eh) + : arg_id_(-1), context_(format_str, eh), + parse_funcs_{&parse_format_specs<Args, parse_context_type>...} {} + + FMT_CONSTEXPR void on_text(const Char *, const Char *) {} + + FMT_CONSTEXPR void on_arg_id() { + arg_id_ = context_.next_arg_id(); + check_arg_id(); + } + FMT_CONSTEXPR void on_arg_id(unsigned id) { + arg_id_ = id; + context_.check_arg_id(id); + check_arg_id(); + } + FMT_CONSTEXPR void on_arg_id(basic_string_view<Char>) {} + + FMT_CONSTEXPR void on_replacement_field(const Char *) {} + + FMT_CONSTEXPR const Char *on_format_specs(const Char *s) { + context_.advance_to(s); + return to_unsigned(arg_id_) < NUM_ARGS ? + parse_funcs_[arg_id_](context_) : s; + } + + FMT_CONSTEXPR void on_error(const char *message) { + context_.on_error(message); + } + + private: + typedef basic_parse_context<Char, ErrorHandler> parse_context_type; + enum { NUM_ARGS = sizeof...(Args) }; + + FMT_CONSTEXPR void check_arg_id() { + if (internal::to_unsigned(arg_id_) >= NUM_ARGS) + context_.on_error("argument index out of range"); + } + + // Format specifier parsing function. + typedef const Char *(*parse_func)(parse_context_type &); + + int arg_id_; + parse_context_type context_; + parse_func parse_funcs_[NUM_ARGS > 0 ? NUM_ARGS : 1]; +}; + +template <typename Char, typename ErrorHandler, typename... Args> +FMT_CONSTEXPR bool check_format_string( + basic_string_view<Char> s, ErrorHandler eh = ErrorHandler()) { + format_string_checker<Char, ErrorHandler, Args...> checker(s, eh); + parse_format_string(s.begin(), checker); + return true; +} + +template <typename... Args, typename String> +void check_format_string(String format_str) { + FMT_CONSTEXPR_DECL bool invalid_format = + internal::check_format_string<char, internal::error_handler, Args...>( + string_view(format_str.data(), format_str.size())); + (void)invalid_format; +} + +// Specifies whether to format T using the standard formatter. +// It is not possible to use get_type in formatter specialization directly +// because of a bug in MSVC. +template <typename Context, typename T> +struct format_type : + std::integral_constant<bool, get_type<Context, T>::value != custom_type> {}; + +// Specifies whether to format enums. +template <typename T, typename Enable = void> +struct format_enum : std::integral_constant<bool, std::is_enum<T>::value> {}; + +template <template <typename> class Handler, typename Spec, typename Context> +void handle_dynamic_spec( + Spec &value, arg_ref<typename Context::char_type> ref, Context &ctx) { + typedef typename Context::char_type char_type; + switch (ref.kind) { + case arg_ref<char_type>::NONE: + break; + case arg_ref<char_type>::INDEX: + internal::set_dynamic_spec<Handler>( + value, ctx.get_arg(ref.index), ctx.error_handler()); + break; + case arg_ref<char_type>::NAME: + internal::set_dynamic_spec<Handler>( + value, ctx.get_arg(ref.name), ctx.error_handler()); + break; + } +} +} // namespace internal + +/** The default argument formatter. */ +template <typename Range> +class arg_formatter: + public internal::function< + typename internal::arg_formatter_base<Range>::iterator>, + public internal::arg_formatter_base<Range> { + private: + typedef typename Range::value_type char_type; + typedef internal::arg_formatter_base<Range> base; + typedef basic_format_context<typename base::iterator, char_type> context_type; + + context_type &ctx_; + + public: + typedef Range range; + typedef typename base::iterator iterator; + typedef typename base::format_specs format_specs; + + /** + \rst + Constructs an argument formatter object. + *ctx* is a reference to the formatting context, + *spec* contains format specifier information for standard argument types. + \endrst + */ + arg_formatter(context_type &ctx, format_specs &spec) + : base(Range(ctx.out()), spec), ctx_(ctx) {} + + using base::operator(); + + /** Formats an argument of a user-defined type. */ + iterator operator()(typename basic_format_arg<context_type>::handle handle) { + handle.format(ctx_); + return this->out(); + } +}; + +/** + An error returned by an operating system or a language runtime, + for example a file opening error. +*/ +class system_error : public std::runtime_error { + private: + FMT_API void init(int err_code, string_view format_str, format_args args); + + protected: + int error_code_; + + system_error() : std::runtime_error("") {} + + public: + /** + \rst + Constructs a :class:`fmt::system_error` object with a description + formatted with `fmt::format_system_error`. *message* and additional + arguments passed into the constructor are formatted similarly to + `fmt::format`. + + **Example**:: + + // This throws a system_error with the description + // cannot open file 'madeup': No such file or directory + // or similar (system message may vary). + const char *filename = "madeup"; + std::FILE *file = std::fopen(filename, "r"); + if (!file) + throw fmt::system_error(errno, "cannot open file '{}'", filename); + \endrst + */ + template <typename... Args> + system_error(int error_code, string_view message, const Args & ... args) + : std::runtime_error("") { + init(error_code, message, make_format_args(args...)); + } + + int error_code() const { return error_code_; } +}; + +/** + \rst + Formats an error returned by an operating system or a language runtime, + for example a file opening error, and writes it to *out* in the following + form: + + .. parsed-literal:: + *<message>*: *<system-message>* + + where *<message>* is the passed message and *<system-message>* is + the system message corresponding to the error code. + *error_code* is a system error code as given by ``errno``. + If *error_code* is not a valid error code such as -1, the system message + may look like "Unknown error -1" and is platform-dependent. + \endrst + */ +FMT_API void format_system_error(internal::buffer &out, int error_code, + fmt::string_view message) FMT_NOEXCEPT; + +/** + This template provides operations for formatting and writing data into a + character range. + */ +template <typename Range> +class basic_writer { + public: + typedef typename Range::value_type char_type; + typedef decltype(internal::declval<Range>().begin()) iterator; + typedef basic_format_specs<char_type> format_specs; + + private: + // Output iterator. + iterator out_; + + std::unique_ptr<locale_provider> locale_; + + FMT_DISALLOW_COPY_AND_ASSIGN(basic_writer); + + iterator out() const { return out_; } + + // Attempts to reserve space for n extra characters in the output range. + // Returns a pointer to the reserved range or a reference to out_. + auto reserve(std::size_t n) -> decltype(internal::reserve(out_, n)) { + return internal::reserve(out_, n); + } + + // Writes a value in the format + // <left-padding><value><right-padding> + // where <value> is written by f(it). + template <typename F> + void write_padded(std::size_t size, const align_spec &spec, F f); + + template <typename F> + struct padded_int_writer { + string_view prefix; + char_type fill; + std::size_t padding; + F f; + + template <typename It> + void operator()(It &&it) const { + if (prefix.size() != 0) + it = std::copy_n(prefix.data(), prefix.size(), it); + it = std::fill_n(it, padding, fill); + f(it); + } + }; + + // Writes an integer in the format + // <left-padding><prefix><numeric-padding><digits><right-padding> + // where <digits> are written by f(it). + template <typename Spec, typename F> + void write_int(unsigned num_digits, string_view prefix, + const Spec &spec, F f) { + std::size_t size = prefix.size() + num_digits; + char_type fill = static_cast<char_type>(spec.fill()); + std::size_t padding = 0; + if (spec.align() == ALIGN_NUMERIC) { + if (spec.width() > size) { + padding = spec.width() - size; + size = spec.width(); + } + } else if (spec.precision() > static_cast<int>(num_digits)) { + size = prefix.size() + static_cast<std::size_t>(spec.precision()); + padding = static_cast<std::size_t>(spec.precision()) - num_digits; + fill = '0'; + } + align_spec as = spec; + if (spec.align() == ALIGN_DEFAULT) + as.align_ = ALIGN_RIGHT; + write_padded(size, as, padded_int_writer<F>{prefix, fill, padding, f}); + } + + // Writes a decimal integer. + template <typename Int> + void write_decimal(Int value) { + typedef typename internal::int_traits<Int>::main_type main_type; + main_type abs_value = static_cast<main_type>(value); + bool is_negative = internal::is_negative(value); + if (is_negative) + abs_value = 0 - abs_value; + unsigned num_digits = internal::count_digits(abs_value); + auto &&it = reserve((is_negative ? 1 : 0) + num_digits); + if (is_negative) + *it++ = '-'; + internal::format_decimal(it, abs_value, num_digits); + } + + // The handle_int_type_spec handler that writes an integer. + template <typename Int, typename Spec> + struct int_writer { + typedef typename internal::int_traits<Int>::main_type unsigned_type; + + basic_writer<Range> &writer; + const Spec &spec; + unsigned_type abs_value; + char prefix[4]; + unsigned prefix_size; + + string_view get_prefix() const { return string_view(prefix, prefix_size); } + + // Counts the number of digits in abs_value. BITS = log2(radix). + template <unsigned BITS> + unsigned count_digits() const { + unsigned_type n = abs_value; + unsigned num_digits = 0; + do { + ++num_digits; + } while ((n >>= BITS) != 0); + return num_digits; + } + + int_writer(basic_writer<Range> &w, Int value, const Spec &s) + : writer(w), spec(s), abs_value(static_cast<unsigned_type>(value)), + prefix_size(0) { + if (internal::is_negative(value)) { + prefix[0] = '-'; + ++prefix_size; + abs_value = 0 - abs_value; + } else if (spec.flag(SIGN_FLAG)) { + prefix[0] = spec.flag(PLUS_FLAG) ? '+' : ' '; + ++prefix_size; + } + } + + struct dec_writer { + unsigned_type abs_value; + unsigned num_digits; + + template <typename It> + void operator()(It &&it) const { + it = internal::format_decimal(it, abs_value, num_digits); + } + }; + + void on_dec() { + unsigned num_digits = internal::count_digits(abs_value); + writer.write_int(num_digits, get_prefix(), spec, + dec_writer{abs_value, num_digits}); + } + + struct hex_writer { + int_writer &self; + unsigned num_digits; + + template <typename It> + void operator()(It &&it) const { + it = internal::format_uint<4>(it, self.abs_value, num_digits, + self.spec.type() != 'x'); + } + }; + + void on_hex() { + if (spec.flag(HASH_FLAG)) { + prefix[prefix_size++] = '0'; + prefix[prefix_size++] = static_cast<char>(spec.type()); + } + unsigned num_digits = count_digits<4>(); + writer.write_int(num_digits, get_prefix(), spec, + hex_writer{*this, num_digits}); + } + + template <int BITS> + struct bin_writer { + unsigned_type abs_value; + unsigned num_digits; + + template <typename It> + void operator()(It &&it) const { + it = internal::format_uint<BITS>(it, abs_value, num_digits); + } + }; + + void on_bin() { + if (spec.flag(HASH_FLAG)) { + prefix[prefix_size++] = '0'; + prefix[prefix_size++] = static_cast<char>(spec.type()); + } + unsigned num_digits = count_digits<1>(); + writer.write_int(num_digits, get_prefix(), spec, + bin_writer<1>{abs_value, num_digits}); + } + + void on_oct() { + unsigned num_digits = count_digits<3>(); + if (spec.flag(HASH_FLAG) && + spec.precision() <= static_cast<int>(num_digits)) { + // Octal prefix '0' is counted as a digit, so only add it if precision + // is not greater than the number of digits. + prefix[prefix_size++] = '0'; + } + writer.write_int(num_digits, get_prefix(), spec, + bin_writer<3>{abs_value, num_digits}); + } + + enum { SEP_SIZE = 1 }; + + struct num_writer { + unsigned_type abs_value; + unsigned size; + char_type sep; + + template <typename It> + void operator()(It &&it) const { + basic_string_view<char_type> s(&sep, SEP_SIZE); + it = format_decimal(it, abs_value, size, + internal::add_thousands_sep<char_type>(s)); + } + }; + + void on_num() { + unsigned num_digits = internal::count_digits(abs_value); + char_type sep = internal::thousands_sep<char_type>(writer.locale_.get()); + unsigned size = num_digits + SEP_SIZE * ((num_digits - 1) / 3); + writer.write_int(size, get_prefix(), spec, + num_writer{abs_value, size, sep}); + } + + void on_error() { + FMT_THROW(format_error("invalid type specifier")); + } + }; + + // Writes a formatted integer. + template <typename T, typename Spec> + void write_int(T value, const Spec &spec) { + internal::handle_int_type_spec(spec.type(), + int_writer<T, Spec>(*this, value, spec)); + } + + enum {INF_SIZE = 3}; // This is an enum to workaround a bug in MSVC. + + struct inf_or_nan_writer { + char sign; + const char *str; + + template <typename It> + void operator()(It &&it) const { + if (sign) + *it++ = sign; + it = std::copy_n(str, static_cast<std::size_t>(INF_SIZE), it); + } + }; + + struct double_writer { + size_t n; + char sign; + basic_memory_buffer<char_type> &buffer; + + template <typename It> + void operator()(It &&it) { + if (sign) { + *it++ = sign; + --n; + } + it = std::copy_n(buffer.begin(), n, it); + } + }; + + // Formats a floating-point number (double or long double). + template <typename T> + void write_double(T value, const format_specs &spec); + template <typename T> + void write_double_sprintf(T value, const format_specs &spec, + internal::basic_buffer<char_type>& buffer); + + template <typename Char> + struct str_writer { + const Char *s; + std::size_t size; + + template <typename It> + void operator()(It &&it) const { + it = std::copy_n(s, size, it); + } + }; + + // Writes a formatted string. + template <typename Char> + void write_str(const Char *s, std::size_t size, const align_spec &spec) { + write_padded(size, spec, str_writer<Char>{s, size}); + } + + template <typename Char> + void write_str(basic_string_view<Char> str, const format_specs &spec); + + // Appends floating-point length specifier to the format string. + // The second argument is only used for overload resolution. + void append_float_length(char_type *&format_ptr, long double) { + *format_ptr++ = 'L'; + } + + template<typename T> + void append_float_length(char_type *&, T) {} + + template <typename Char> + friend class internal::arg_formatter_base; + + public: + /** Constructs a ``basic_writer`` object. */ + explicit basic_writer(Range out): out_(out.begin()) {} + + void write(int value) { write_decimal(value); } + void write(long value) { write_decimal(value); } + void write(long long value) { write_decimal(value); } + + void write(unsigned value) { write_decimal(value); } + void write(unsigned long value) { write_decimal(value); } + void write(unsigned long long value) { write_decimal(value); } + + /** + \rst + Formats *value* and writes it to the buffer. + \endrst + */ + template <typename T, typename FormatSpec, typename... FormatSpecs> + typename std::enable_if<std::is_integral<T>::value, void>::type + write(T value, FormatSpec spec, FormatSpecs... specs) { + format_specs s(spec, specs...); + s.align_ = ALIGN_RIGHT; + write_int(value, s); + } + + void write(double value) { + write_double(value, format_specs()); + } + + /** + \rst + Formats *value* using the general format for floating-point numbers + (``'g'``) and writes it to the buffer. + \endrst + */ + void write(long double value) { + write_double(value, format_specs()); + } + + /** Writes a character to the buffer. */ + void write(char value) { + *reserve(1) = value; + } + + void write(wchar_t value) { + internal::require_wchar<char_type>(); + *reserve(1) = value; + } + + /** + \rst + Writes *value* to the buffer. + \endrst + */ + void write(string_view value) { + auto &&it = reserve(value.size()); + it = std::copy(value.begin(), value.end(), it); + } + + void write(wstring_view value) { + internal::require_wchar<char_type>(); + auto &&it = reserve(value.size()); + it = std::uninitialized_copy(value.begin(), value.end(), it); + } + + template <typename... FormatSpecs> + void write(basic_string_view<char_type> str, FormatSpecs... specs) { + write_str(str, format_specs(specs...)); + } + + template <typename T> + typename std::enable_if<std::is_same<T, void>::value>::type write(const T* p) { + format_specs specs; + specs.flags_ = HASH_FLAG; + specs.type_ = 'x'; + write_int(reinterpret_cast<uintptr_t>(p), specs); + } +}; + +template <typename Range> +template <typename F> +void basic_writer<Range>::write_padded( + std::size_t size, const align_spec &spec, F f) { + unsigned width = spec.width(); + if (width <= size) + return f(reserve(size)); + auto &&it = reserve(width); + char_type fill = static_cast<char_type>(spec.fill()); + std::size_t padding = width - size; + if (spec.align() == ALIGN_RIGHT) { + it = std::fill_n(it, padding, fill); + f(it); + } else if (spec.align() == ALIGN_CENTER) { + std::size_t left_padding = padding / 2; + it = std::fill_n(it, left_padding, fill); + f(it); + it = std::fill_n(it, padding - left_padding, fill); + } else { + f(it); + it = std::fill_n(it, padding, fill); + } +} + +template <typename Range> +template <typename Char> +void basic_writer<Range>::write_str( + basic_string_view<Char> s, const format_specs &spec) { + const Char *data = s.data(); + std::size_t size = s.size(); + std::size_t precision = static_cast<std::size_t>(spec.precision_); + if (spec.precision_ >= 0 && precision < size) + size = precision; + write_str(data, size, spec); +} + +template <typename Char> +struct float_spec_handler { + Char type; + bool upper; + + explicit float_spec_handler(Char t) : type(t), upper(false) {} + + void on_general() { + if (type == 'G') + upper = true; + else + type = 'g'; + } + + void on_exp() { + if (type == 'E') + upper = true; + } + + void on_fixed() { + if (type == 'F') { + upper = true; +#if FMT_MSC_VER + // MSVC's printf doesn't support 'F'. + type = 'f'; +#endif + } + } + + void on_hex() { + if (type == 'A') + upper = true; + } + + void on_error() { + FMT_THROW(format_error("invalid type specifier")); + } +}; + +template <typename Range> +template <typename T> +void basic_writer<Range>::write_double(T value, const format_specs &spec) { + // Check type. + float_spec_handler<char_type> handler(spec.type()); + internal::handle_float_type_spec(spec.type(), handler); + + char sign = 0; + // Use isnegative instead of value < 0 because the latter is always + // false for NaN. + if (internal::fputil::isnegative(static_cast<double>(value))) { + sign = '-'; + value = -value; + } else if (spec.flag(SIGN_FLAG)) { + sign = spec.flag(PLUS_FLAG) ? '+' : ' '; + } + + struct write_inf_or_nan_t { + basic_writer &writer; + format_specs spec; + char sign; + void operator()(const char *str) const { + writer.write_padded(INF_SIZE + (sign ? 1 : 0), spec, + inf_or_nan_writer{sign, str}); + } + } write_inf_or_nan = {*this, spec, sign}; + + // Format NaN and ininity ourselves because sprintf's output is not consistent + // across platforms. + if (internal::fputil::isnotanumber(value)) + return write_inf_or_nan(handler.upper ? "NAN" : "nan"); + if (internal::fputil::isinfinity(value)) + return write_inf_or_nan(handler.upper ? "INF" : "inf"); + + basic_memory_buffer<char_type> buffer; + if (FMT_USE_GRISU && sizeof(T) <= sizeof(double) && + std::numeric_limits<double>::is_iec559) { + internal::fp fp_value(static_cast<double>(value)); + fp_value.normalize(); + // Find a cached power of 10 close to 1 / fp_value. + int dec_exp = 0; + const int min_exp = -60; + auto dec_pow = internal::get_cached_power( + min_exp - (fp_value.e + internal::fp::significand_size), dec_exp); + internal::fp product = fp_value * dec_pow; + // Generate output. + internal::fp one(1ull << -product.e, product.e); + uint64_t hi = product.f >> -one.e; + uint64_t f = product.f & (one.f - 1); + typedef back_insert_range<internal::basic_buffer<char_type>> range; + basic_writer<range> w{range(buffer)}; + w.write(hi); + size_t digits = buffer.size(); + w.write('.'); + const unsigned max_digits = 18; + while (digits++ < max_digits) { + f *= 10; + w.write(static_cast<char>('0' + (f >> -one.e))); + f &= one.f - 1; + } + w.write('e'); + w.write(-dec_exp); + } else { + format_specs normalized_spec(spec); + normalized_spec.type_ = handler.type; + write_double_sprintf(value, normalized_spec, buffer); + } + size_t n = buffer.size(); + align_spec as = spec; + if (spec.align() == ALIGN_NUMERIC) { + if (sign) { + auto &&it = reserve(1); + *it++ = sign; + sign = 0; + if (as.width_) + --as.width_; + } + as.align_ = ALIGN_RIGHT; + } else { + if (spec.align() == ALIGN_DEFAULT) + as.align_ = ALIGN_RIGHT; + if (sign) + ++n; + } + write_padded(n, as, double_writer{n, sign, buffer}); +} + +template <typename Range> +template <typename T> +void basic_writer<Range>::write_double_sprintf( + T value, const format_specs &spec, + internal::basic_buffer<char_type>& buffer) { + // Buffer capacity must be non-zero, otherwise MSVC's vsnprintf_s will fail. + FMT_ASSERT(buffer.capacity() != 0, "empty buffer"); + + // Build format string. + enum { MAX_FORMAT_SIZE = 10}; // longest format: %#-*.*Lg + char_type format[MAX_FORMAT_SIZE]; + char_type *format_ptr = format; + *format_ptr++ = '%'; + if (spec.flag(HASH_FLAG)) + *format_ptr++ = '#'; + if (spec.precision() >= 0) { + *format_ptr++ = '.'; + *format_ptr++ = '*'; + } + + append_float_length(format_ptr, value); + *format_ptr++ = spec.type(); + *format_ptr = '\0'; + + // Format using snprintf. + char_type *start = FMT_NULL; + for (;;) { + std::size_t buffer_size = buffer.capacity(); + start = &buffer[0]; + int result = internal::char_traits<char_type>::format_float( + start, buffer_size, format, spec.precision(), value); + if (result >= 0) { + unsigned n = internal::to_unsigned(result); + if (n < buffer.capacity()) { + buffer.resize(n); + break; // The buffer is large enough - continue with formatting. + } + buffer.reserve(n + 1); + } else { + // If result is negative we ask to increase the capacity by at least 1, + // but as std::vector, the buffer grows exponentially. + buffer.reserve(buffer.capacity() + 1); + } + } +} + +// Reports a system error without throwing an exception. +// Can be used to report errors from destructors. +FMT_API void report_system_error(int error_code, + string_view message) FMT_NOEXCEPT; + +#if FMT_USE_WINDOWS_H + +/** A Windows error. */ +class windows_error : public system_error { + private: + FMT_API void init(int error_code, string_view format_str, format_args args); + + public: + /** + \rst + Constructs a :class:`fmt::windows_error` object with the description + of the form + + .. parsed-literal:: + *<message>*: *<system-message>* + + where *<message>* is the formatted message and *<system-message>* is the + system message corresponding to the error code. + *error_code* is a Windows error code as given by ``GetLastError``. + If *error_code* is not a valid error code such as -1, the system message + will look like "error -1". + + **Example**:: + + // This throws a windows_error with the description + // cannot open file 'madeup': The system cannot find the file specified. + // or similar (system message may vary). + const char *filename = "madeup"; + LPOFSTRUCT of = LPOFSTRUCT(); + HFILE file = OpenFile(filename, &of, OF_READ); + if (file == HFILE_ERROR) { + throw fmt::windows_error(GetLastError(), + "cannot open file '{}'", filename); + } + \endrst + */ + template <typename... Args> + windows_error(int error_code, string_view message, const Args & ... args) { + init(error_code, message, make_format_args(args...)); + } +}; + +// Reports a Windows error without throwing an exception. +// Can be used to report errors from destructors. +FMT_API void report_windows_error(int error_code, + string_view message) FMT_NOEXCEPT; + +#endif + +/** Fast integer formatter. */ +class format_int { + private: + // Buffer should be large enough to hold all digits (digits10 + 1), + // a sign and a null character. + enum {BUFFER_SIZE = std::numeric_limits<unsigned long long>::digits10 + 3}; + mutable char buffer_[BUFFER_SIZE]; + char *str_; + + // Formats value in reverse and returns a pointer to the beginning. + char *format_decimal(unsigned long long value) { + char *ptr = buffer_ + BUFFER_SIZE - 1; + while (value >= 100) { + // Integer division is slow so do it for a group of two digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + unsigned index = static_cast<unsigned>((value % 100) * 2); + value /= 100; + *--ptr = internal::data::DIGITS[index + 1]; + *--ptr = internal::data::DIGITS[index]; + } + if (value < 10) { + *--ptr = static_cast<char>('0' + value); + return ptr; + } + unsigned index = static_cast<unsigned>(value * 2); + *--ptr = internal::data::DIGITS[index + 1]; + *--ptr = internal::data::DIGITS[index]; + return ptr; + } + + void format_signed(long long value) { + unsigned long long abs_value = static_cast<unsigned long long>(value); + bool negative = value < 0; + if (negative) + abs_value = 0 - abs_value; + str_ = format_decimal(abs_value); + if (negative) + *--str_ = '-'; + } + + public: + explicit format_int(int value) { format_signed(value); } + explicit format_int(long value) { format_signed(value); } + explicit format_int(long long value) { format_signed(value); } + explicit format_int(unsigned value) : str_(format_decimal(value)) {} + explicit format_int(unsigned long value) : str_(format_decimal(value)) {} + explicit format_int(unsigned long long value) : str_(format_decimal(value)) {} + + /** Returns the number of characters written to the output buffer. */ + std::size_t size() const { + return internal::to_unsigned(buffer_ - str_ + BUFFER_SIZE - 1); + } + + /** + Returns a pointer to the output buffer content. No terminating null + character is appended. + */ + const char *data() const { return str_; } + + /** + Returns a pointer to the output buffer content with terminating null + character appended. + */ + const char *c_str() const { + buffer_[BUFFER_SIZE - 1] = '\0'; + return str_; + } + + /** + \rst + Returns the content of the output buffer as an ``std::string``. + \endrst + */ + std::string str() const { return std::string(str_, size()); } +}; + +// Formats a decimal integer value writing into buffer and returns +// a pointer to the end of the formatted string. This function doesn't +// write a terminating null character. +template <typename T> +inline void format_decimal(char *&buffer, T value) { + typedef typename internal::int_traits<T>::main_type main_type; + main_type abs_value = static_cast<main_type>(value); + if (internal::is_negative(value)) { + *buffer++ = '-'; + abs_value = 0 - abs_value; + } + if (abs_value < 100) { + if (abs_value < 10) { + *buffer++ = static_cast<char>('0' + abs_value); + return; + } + unsigned index = static_cast<unsigned>(abs_value * 2); + *buffer++ = internal::data::DIGITS[index]; + *buffer++ = internal::data::DIGITS[index + 1]; + return; + } + unsigned num_digits = internal::count_digits(abs_value); + internal::format_decimal(buffer, abs_value, num_digits); + buffer += num_digits; +} + +// Formatter of objects of type T. +template <typename T, typename Char> +struct formatter< + T, Char, + typename std::enable_if<internal::format_type< + typename buffer_context<Char>::type, T>::value>::type> { + + // Parses format specifiers stopping either at the end of the range or at the + // terminating '}'. + template <typename ParseContext> + FMT_CONSTEXPR typename ParseContext::iterator parse(ParseContext &ctx) { + auto it = internal::null_terminating_iterator<Char>(ctx); + typedef internal::dynamic_specs_handler<ParseContext> handler_type; + auto type = internal::get_type< + typename buffer_context<Char>::type, T>::value; + internal::specs_checker<handler_type> + handler(handler_type(specs_, ctx), type); + it = parse_format_specs(it, handler); + auto type_spec = specs_.type(); + auto eh = ctx.error_handler(); + switch (type) { + case internal::none_type: + case internal::named_arg_type: + FMT_ASSERT(false, "invalid argument type"); + break; + case internal::int_type: + case internal::uint_type: + case internal::long_long_type: + case internal::ulong_long_type: + case internal::bool_type: + handle_int_type_spec( + type_spec, internal::int_type_checker<decltype(eh)>(eh)); + break; + case internal::char_type: + handle_char_specs( + specs_, + internal::char_specs_checker<decltype(eh), decltype(type_spec)>( + type_spec, eh)); + break; + case internal::double_type: + case internal::long_double_type: + handle_float_type_spec( + type_spec, internal::float_type_checker<decltype(eh)>(eh)); + break; + case internal::cstring_type: + internal::handle_cstring_type_spec( + type_spec, internal::cstring_type_checker<decltype(eh)>(eh)); + break; + case internal::string_type: + internal::check_string_type_spec(type_spec, eh); + break; + case internal::pointer_type: + internal::check_pointer_type_spec(type_spec, eh); + break; + case internal::custom_type: + // Custom format specifiers should be checked in parse functions of + // formatter specializations. + break; + } + return pointer_from(it); + } + + template <typename FormatContext> + auto format(const T &val, FormatContext &ctx) -> decltype(ctx.out()) { + internal::handle_dynamic_spec<internal::width_checker>( + specs_.width_, specs_.width_ref, ctx); + internal::handle_dynamic_spec<internal::precision_checker>( + specs_.precision_, specs_.precision_ref, ctx); + typedef output_range<typename FormatContext::iterator, + typename FormatContext::char_type> range_type; + return visit(arg_formatter<range_type>(ctx, specs_), + internal::make_arg<FormatContext>(val)); + } + + private: + internal::dynamic_format_specs<Char> specs_; +}; + +template <typename T, typename Char> +struct formatter<T, Char, + typename std::enable_if<internal::format_enum<T>::value>::type> + : public formatter<int, Char> { + template <typename ParseContext> + auto parse(ParseContext &ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } +}; + +// A formatter for types known only at run time such as variant alternatives. +// +// Usage: +// typedef std::variant<int, std::string> variant; +// template <> +// struct formatter<variant>: dynamic_formatter<> { +// void format(buffer &buf, const variant &v, context &ctx) { +// visit([&](const auto &val) { format(buf, val, ctx); }, v); +// } +// }; +template <typename Char = char> +class dynamic_formatter { + private: + struct null_handler: internal::error_handler { + void on_align(alignment) {} + void on_plus() {} + void on_minus() {} + void on_space() {} + void on_hash() {} + }; + + public: + template <typename ParseContext> + auto parse(ParseContext &ctx) -> decltype(ctx.begin()) { + auto it = internal::null_terminating_iterator<Char>(ctx); + // Checks are deferred to formatting time when the argument type is known. + internal::dynamic_specs_handler<ParseContext> handler(specs_, ctx); + it = parse_format_specs(it, handler); + return pointer_from(it); + } + + template <typename T, typename FormatContext> + auto format(const T &val, FormatContext &ctx) -> decltype(ctx.out()) { + handle_specs(ctx); + internal::specs_checker<null_handler> + checker(null_handler(), internal::get_type<FormatContext, T>::value); + checker.on_align(specs_.align()); + if (specs_.flags_ == 0) { + // Do nothing. + } else if (specs_.flag(SIGN_FLAG)) { + if (specs_.flag(PLUS_FLAG)) + checker.on_plus(); + else + checker.on_space(); + } else if (specs_.flag(MINUS_FLAG)) { + checker.on_minus(); + } else if (specs_.flag(HASH_FLAG)) { + checker.on_hash(); + } + if (specs_.precision_ != -1) + checker.end_precision(); + typedef output_range<typename FormatContext::iterator, + typename FormatContext::char_type> range; + visit(arg_formatter<range>(ctx, specs_), + internal::make_arg<FormatContext>(val)); + return ctx.out(); + } + + private: + template <typename Context> + void handle_specs(Context &ctx) { + internal::handle_dynamic_spec<internal::width_checker>( + specs_.width_, specs_.width_ref, ctx); + internal::handle_dynamic_spec<internal::precision_checker>( + specs_.precision_, specs_.precision_ref, ctx); + } + + internal::dynamic_format_specs<Char> specs_; +}; + +template <typename Range, typename Char> +typename basic_format_context<Range, Char>::format_arg + basic_format_context<Range, Char>::get_arg(basic_string_view<char_type> name) { + map_.init(this->args()); + format_arg arg = map_.find(name); + if (arg.type() == internal::none_type) + this->on_error("argument not found"); + return arg; +} + +template <typename ArgFormatter, typename Char, typename Context> +struct format_handler : internal::error_handler { + typedef internal::null_terminating_iterator<Char> iterator; + typedef typename ArgFormatter::range range; + + format_handler(range r, basic_string_view<Char> str, + basic_format_args<Context> format_args) + : context(r.begin(), str, format_args) {} + + void on_text(iterator begin, iterator end) { + auto size = internal::to_unsigned(end - begin); + auto out = context.out(); + auto &&it = internal::reserve(out, size); + it = std::copy_n(begin, size, it); + context.advance_to(out); + } + + void on_arg_id() { arg = context.next_arg(); } + void on_arg_id(unsigned id) { + context.parse_context().check_arg_id(id); + arg = context.get_arg(id); + } + void on_arg_id(basic_string_view<Char> id) { + arg = context.get_arg(id); + } + + void on_replacement_field(iterator it) { + context.parse_context().advance_to(pointer_from(it)); + if (visit(internal::custom_formatter<Char, Context>(context), arg)) + return; + basic_format_specs<Char> specs; + context.advance_to(visit(ArgFormatter(context, specs), arg)); + } + + iterator on_format_specs(iterator it) { + auto& parse_ctx = context.parse_context(); + parse_ctx.advance_to(pointer_from(it)); + if (visit(internal::custom_formatter<Char, Context>(context), arg)) + return iterator(parse_ctx); + basic_format_specs<Char> specs; + using internal::specs_handler; + internal::specs_checker<specs_handler<Context>> + handler(specs_handler<Context>(specs, context), arg.type()); + it = parse_format_specs(it, handler); + if (*it != '}') + on_error("missing '}' in format string"); + parse_ctx.advance_to(pointer_from(it)); + context.advance_to(visit(ArgFormatter(context, specs), arg)); + return it; + } + + Context context; + basic_format_arg<Context> arg; +}; + +/** Formats arguments and writes the output to the range. */ +template <typename ArgFormatter, typename Char, typename Context> +typename Context::iterator vformat_to(typename ArgFormatter::range out, + basic_string_view<Char> format_str, + basic_format_args<Context> args) { + typedef internal::null_terminating_iterator<Char> iterator; + format_handler<ArgFormatter, Char, Context> h(out, format_str, args); + parse_format_string(iterator(format_str.begin(), format_str.end()), h); + return h.context.out(); +} + +// Casts ``p`` to ``const void*`` for pointer formatting. +// Example: +// auto s = format("{}", ptr(p)); +template <typename T> +inline const void *ptr(const T *p) { return p; } + +template <typename It, typename Char> +struct arg_join { + It begin; + It end; + basic_string_view<Char> sep; + + arg_join(It begin, It end, basic_string_view<Char> sep) + : begin(begin), end(end), sep(sep) {} +}; + +template <typename It, typename Char> +struct formatter<arg_join<It, Char>, Char>: + formatter<typename std::iterator_traits<It>::value_type, Char> { + template <typename FormatContext> + auto format(const arg_join<It, Char> &value, FormatContext &ctx) + -> decltype(ctx.out()) { + typedef formatter<typename std::iterator_traits<It>::value_type, Char> base; + auto it = value.begin; + auto out = ctx.out(); + if (it != value.end) { + out = base::format(*it++, ctx); + while (it != value.end) { + out = std::copy(value.sep.begin(), value.sep.end(), out); + ctx.advance_to(out); + out = base::format(*it++, ctx); + } + } + return out; + } +}; + +template <typename It> +arg_join<It, char> join(It begin, It end, string_view sep) { + return arg_join<It, char>(begin, end, sep); +} + +template <typename It> +arg_join<It, wchar_t> join(It begin, It end, wstring_view sep) { + return arg_join<It, wchar_t>(begin, end, sep); +} + +// The following causes ICE in gcc 4.4. +#if FMT_USE_TRAILING_RETURN && (!FMT_GCC_VERSION || FMT_GCC_VERSION >= 405) +template <typename Range> +auto join(const Range &range, string_view sep) + -> arg_join<decltype(internal::begin(range)), char> { + return join(internal::begin(range), internal::end(range), sep); +} + +template <typename Range> +auto join(const Range &range, wstring_view sep) + -> arg_join<decltype(internal::begin(range)), wchar_t> { + return join(internal::begin(range), internal::end(range), sep); +} +#endif + +/** + \rst + Converts *value* to ``std::string`` using the default format for type *T*. + + **Example**:: + + #include <fmt/format.h> + + std::string answer = fmt::to_string(42); + \endrst + */ +template <typename T> +std::string to_string(const T &value) { + std::string str; + internal::container_buffer<std::string> buf(str); + writer(buf).write(value); + return str; +} + +/** + Converts *value* to ``std::wstring`` using the default format for type *T*. + */ +template <typename T> +std::wstring to_wstring(const T &value) { + std::wstring str; + internal::container_buffer<std::wstring> buf(str); + wwriter(buf).write(value); + return str; +} + +template <typename Char, std::size_t SIZE> +std::basic_string<Char> to_string(const basic_memory_buffer<Char, SIZE> &buf) { + return std::basic_string<Char>(buf.data(), buf.size()); +} + +inline format_context::iterator vformat_to( + internal::buffer &buf, string_view format_str, format_args args) { + typedef back_insert_range<internal::buffer> range; + return vformat_to<arg_formatter<range>>(buf, format_str, args); +} + +inline wformat_context::iterator vformat_to( + internal::wbuffer &buf, wstring_view format_str, wformat_args args) { + typedef back_insert_range<internal::wbuffer> range; + return vformat_to<arg_formatter<range>>(buf, format_str, args); +} + +template <typename... Args, std::size_t SIZE = inline_buffer_size> +inline format_context::iterator format_to( + basic_memory_buffer<char, SIZE> &buf, string_view format_str, + const Args & ... args) { + return vformat_to(buf, format_str, make_format_args(args...)); +} + +template <typename... Args, std::size_t SIZE = inline_buffer_size> +inline wformat_context::iterator format_to( + basic_memory_buffer<wchar_t, SIZE> &buf, wstring_view format_str, + const Args & ... args) { + return vformat_to(buf, format_str, make_format_args<wformat_context>(args...)); +} + +template <typename OutputIt, typename Char = char> +//using format_context_t = basic_format_context<OutputIt, Char>; +struct format_context_t { typedef basic_format_context<OutputIt, Char> type; }; + +template <typename OutputIt, typename Char = char> +//using format_args_t = basic_format_args<format_context_t<OutputIt, Char>>; +struct format_args_t { + typedef basic_format_args< + typename format_context_t<OutputIt, Char>::type> type; +}; + +template <typename OutputIt, typename... Args> +inline OutputIt vformat_to(OutputIt out, string_view format_str, + typename format_args_t<OutputIt>::type args) { + typedef output_range<OutputIt, char> range; + return vformat_to<arg_formatter<range>>(range(out), format_str, args); +} +template <typename OutputIt, typename... Args> +inline OutputIt vformat_to( + OutputIt out, wstring_view format_str, + typename format_args_t<OutputIt, wchar_t>::type args) { + typedef output_range<OutputIt, wchar_t> range; + return vformat_to<arg_formatter<range>>(range(out), format_str, args); +} + +/** + \rst + Formats arguments, writes the result to the output iterator ``out`` and returns + the iterator past the end of the output range. + + **Example**:: + + std::vector<char> out; + fmt::format_to(std::back_inserter(out), "{}", 42); + \endrst + */ +template <typename OutputIt, typename... Args> +inline OutputIt format_to(OutputIt out, string_view format_str, + const Args & ... args) { + return vformat_to(out, format_str, + make_format_args<typename format_context_t<OutputIt>::type>(args...)); +} + +template <typename Container, typename... Args> +inline typename std::enable_if< + is_contiguous<Container>::value, std::back_insert_iterator<Container>>::type + format_to(std::back_insert_iterator<Container> out, + string_view format_str, const Args & ... args) { + return vformat_to(out, format_str, make_format_args<format_context>(args...)); +} + +template <typename Container, typename... Args> +inline typename std::enable_if< + is_contiguous<Container>::value, std::back_insert_iterator<Container>>::type + format_to(std::back_insert_iterator<Container> out, + wstring_view format_str, const Args & ... args) { + return vformat_to(out, format_str, make_format_args<wformat_context>(args...)); +} + +template <typename OutputIt> +struct format_to_n_result { + /** Iterator past the end of the output range. */ + OutputIt out; + /** Total (not truncated) output size. */ + std::size_t size; +}; + +template <typename OutputIt> +using format_to_n_context = typename fmt::format_context_t< + fmt::internal::truncating_iterator<OutputIt>>::type; + +template <typename OutputIt> +using format_to_n_args = fmt::basic_format_args<format_to_n_context<OutputIt>>; + +template <typename OutputIt, typename ...Args> +inline format_arg_store<format_to_n_context<OutputIt>, Args...> + make_format_to_n_args(const Args & ... args) { + return format_arg_store<format_to_n_context<OutputIt>, Args...>(args...); +} + +template <typename OutputIt, typename... Args> +inline format_to_n_result<OutputIt> vformat_to_n( + OutputIt out, std::size_t n, string_view format_str, + format_to_n_args<OutputIt> args) { + typedef internal::truncating_iterator<OutputIt> It; + auto it = vformat_to(It(out, n), format_str, args); + return {it.base(), it.count()}; +} + +/** + \rst + Formats arguments, writes up to ``n`` characters of the result to the output + iterator ``out`` and returns the total output size and the iterator past the end + of the output range. + \endrst + */ +template <typename OutputIt, typename... Args> +inline format_to_n_result<OutputIt> format_to_n( + OutputIt out, std::size_t n, string_view format_str, const Args &... args) { + return vformat_to_n<OutputIt>( + out, n, format_str, make_format_to_n_args<OutputIt>(args...)); +} +template <typename OutputIt, typename... Args> +inline format_to_n_result<OutputIt> format_to_n( + OutputIt out, std::size_t n, wstring_view format_str, const Args &... args) { + typedef internal::truncating_iterator<OutputIt> It; + auto it = vformat_to(It(out, n), format_str, + make_format_args<typename format_context_t<It, wchar_t>::type>(args...)); + return {it.base(), it.count()}; +} + +inline std::string vformat(string_view format_str, format_args args) { + memory_buffer buffer; + vformat_to(buffer, format_str, args); + return fmt::to_string(buffer); +} + +inline std::wstring vformat(wstring_view format_str, wformat_args args) { + wmemory_buffer buffer; + vformat_to(buffer, format_str, args); + return to_string(buffer); +} + +template <typename String, typename... Args> +inline typename std::enable_if< + internal::is_format_string<String>::value, std::string>::type + format(String format_str, const Args & ... args) { + internal::check_format_string<Args...>(format_str); + return vformat(format_str.data(), make_format_args(args...)); +} + +template <typename String, typename... Args> +inline typename std::enable_if<internal::is_format_string<String>::value>::type + print(String format_str, const Args & ... args) { + internal::check_format_string<Args...>(format_str); + return vprint(format_str.data(), make_format_args(args...)); +} + +/** + Returns the number of characters in the output of + ``format(format_str, args...)``. + */ +template <typename... Args> +inline std::size_t formatted_size(string_view format_str, + const Args & ... args) { + auto it = format_to(internal::counting_iterator<char>(), format_str, args...); + return it.count(); +} + +// Experimental color support. +#ifdef FMT_EXTENDED_COLORS +enum class color : uint32_t { + alice_blue = 0xF0F8FF, // rgb(240,248,255) + antique_white = 0xFAEBD7, // rgb(250,235,215) + aqua = 0x00FFFF, // rgb(0,255,255) + aquamarine = 0x7FFFD4, // rgb(127,255,212) + azure = 0xF0FFFF, // rgb(240,255,255) + beige = 0xF5F5DC, // rgb(245,245,220) + bisque = 0xFFE4C4, // rgb(255,228,196) + black = 0x000000, // rgb(0,0,0) + blanched_almond = 0xFFEBCD, // rgb(255,235,205) + blue = 0x0000FF, // rgb(0,0,255) + blue_violet = 0x8A2BE2, // rgb(138,43,226) + brown = 0xA52A2A, // rgb(165,42,42) + burly_wood = 0xDEB887, // rgb(222,184,135) + cadet_blue = 0x5F9EA0, // rgb(95,158,160) + chartreuse = 0x7FFF00, // rgb(127,255,0) + chocolate = 0xD2691E, // rgb(210,105,30) + coral = 0xFF7F50, // rgb(255,127,80) + cornflower_blue = 0x6495ED, // rgb(100,149,237) + cornsilk = 0xFFF8DC, // rgb(255,248,220) + crimson = 0xDC143C, // rgb(220,20,60) + cyan = 0x00FFFF, // rgb(0,255,255) + dark_blue = 0x00008B, // rgb(0,0,139) + dark_cyan = 0x008B8B, // rgb(0,139,139) + dark_golden_rod = 0xB8860B, // rgb(184,134,11) + dark_gray = 0xA9A9A9, // rgb(169,169,169) + dark_green = 0x006400, // rgb(0,100,0) + dark_khaki = 0xBDB76B, // rgb(189,183,107) + dark_magenta = 0x8B008B, // rgb(139,0,139) + dark_olive_green = 0x556B2F, // rgb(85,107,47) + dark_orange = 0xFF8C00, // rgb(255,140,0) + dark_orchid = 0x9932CC, // rgb(153,50,204) + dark_red = 0x8B0000, // rgb(139,0,0) + dark_salmon = 0xE9967A, // rgb(233,150,122) + dark_sea_green = 0x8FBC8F, // rgb(143,188,143) + dark_slate_blue = 0x483D8B, // rgb(72,61,139) + dark_slate_gray = 0x2F4F4F, // rgb(47,79,79) + dark_turquoise = 0x00CED1, // rgb(0,206,209) + dark_violet = 0x9400D3, // rgb(148,0,211) + deep_pink = 0xFF1493, // rgb(255,20,147) + deep_sky_blue = 0x00BFFF, // rgb(0,191,255) + dim_gray = 0x696969, // rgb(105,105,105) + dodger_blue = 0x1E90FF, // rgb(30,144,255) + fire_brick = 0xB22222, // rgb(178,34,34) + floral_white = 0xFFFAF0, // rgb(255,250,240) + forest_green = 0x228B22, // rgb(34,139,34) + fuchsia = 0xFF00FF, // rgb(255,0,255) + gainsboro = 0xDCDCDC, // rgb(220,220,220) + ghost_white = 0xF8F8FF, // rgb(248,248,255) + gold = 0xFFD700, // rgb(255,215,0) + golden_rod = 0xDAA520, // rgb(218,165,32) + gray = 0x808080, // rgb(128,128,128) + green = 0x008000, // rgb(0,128,0) + green_yellow = 0xADFF2F, // rgb(173,255,47) + honey_dew = 0xF0FFF0, // rgb(240,255,240) + hot_pink = 0xFF69B4, // rgb(255,105,180) + indian_red = 0xCD5C5C, // rgb(205,92,92) + indigo = 0x4B0082, // rgb(75,0,130) + ivory = 0xFFFFF0, // rgb(255,255,240) + khaki = 0xF0E68C, // rgb(240,230,140) + lavender = 0xE6E6FA, // rgb(230,230,250) + lavender_blush = 0xFFF0F5, // rgb(255,240,245) + lawn_green = 0x7CFC00, // rgb(124,252,0) + lemon_chiffon = 0xFFFACD, // rgb(255,250,205) + light_blue = 0xADD8E6, // rgb(173,216,230) + light_coral = 0xF08080, // rgb(240,128,128) + light_cyan = 0xE0FFFF, // rgb(224,255,255) + light_golden_rod_yellow = 0xFAFAD2, // rgb(250,250,210) + light_gray = 0xD3D3D3, // rgb(211,211,211) + light_green = 0x90EE90, // rgb(144,238,144) + light_pink = 0xFFB6C1, // rgb(255,182,193) + light_salmon = 0xFFA07A, // rgb(255,160,122) + light_sea_green = 0x20B2AA, // rgb(32,178,170) + light_sky_blue = 0x87CEFA, // rgb(135,206,250) + light_slate_gray = 0x778899, // rgb(119,136,153) + light_steel_blue = 0xB0C4DE, // rgb(176,196,222) + light_yellow = 0xFFFFE0, // rgb(255,255,224) + lime = 0x00FF00, // rgb(0,255,0) + lime_green = 0x32CD32, // rgb(50,205,50) + linen = 0xFAF0E6, // rgb(250,240,230) + magenta = 0xFF00FF, // rgb(255,0,255) + maroon = 0x800000, // rgb(128,0,0) + medium_aquamarine = 0x66CDAA, // rgb(102,205,170) + medium_blue = 0x0000CD, // rgb(0,0,205) + medium_orchid = 0xBA55D3, // rgb(186,85,211) + medium_purple = 0x9370DB, // rgb(147,112,219) + medium_sea_green = 0x3CB371, // rgb(60,179,113) + medium_slate_blue = 0x7B68EE, // rgb(123,104,238) + medium_spring_green = 0x00FA9A, // rgb(0,250,154) + medium_turquoise = 0x48D1CC, // rgb(72,209,204) + medium_violet_red = 0xC71585, // rgb(199,21,133) + midnight_blue = 0x191970, // rgb(25,25,112) + mint_cream = 0xF5FFFA, // rgb(245,255,250) + misty_rose = 0xFFE4E1, // rgb(255,228,225) + moccasin = 0xFFE4B5, // rgb(255,228,181) + navajo_white = 0xFFDEAD, // rgb(255,222,173) + navy = 0x000080, // rgb(0,0,128) + old_lace = 0xFDF5E6, // rgb(253,245,230) + olive = 0x808000, // rgb(128,128,0) + olive_drab = 0x6B8E23, // rgb(107,142,35) + orange = 0xFFA500, // rgb(255,165,0) + orange_red = 0xFF4500, // rgb(255,69,0) + orchid = 0xDA70D6, // rgb(218,112,214) + pale_golden_rod = 0xEEE8AA, // rgb(238,232,170) + pale_green = 0x98FB98, // rgb(152,251,152) + pale_turquoise = 0xAFEEEE, // rgb(175,238,238) + pale_violet_red = 0xDB7093, // rgb(219,112,147) + papaya_whip = 0xFFEFD5, // rgb(255,239,213) + peach_puff = 0xFFDAB9, // rgb(255,218,185) + peru = 0xCD853F, // rgb(205,133,63) + pink = 0xFFC0CB, // rgb(255,192,203) + plum = 0xDDA0DD, // rgb(221,160,221) + powder_blue = 0xB0E0E6, // rgb(176,224,230) + purple = 0x800080, // rgb(128,0,128) + rebecca_purple = 0x663399, // rgb(102,51,153) + red = 0xFF0000, // rgb(255,0,0) + rosy_brown = 0xBC8F8F, // rgb(188,143,143) + royal_blue = 0x4169E1, // rgb(65,105,225) + saddle_brown = 0x8B4513, // rgb(139,69,19) + salmon = 0xFA8072, // rgb(250,128,114) + sandy_brown = 0xF4A460, // rgb(244,164,96) + sea_green = 0x2E8B57, // rgb(46,139,87) + sea_shell = 0xFFF5EE, // rgb(255,245,238) + sienna = 0xA0522D, // rgb(160,82,45) + silver = 0xC0C0C0, // rgb(192,192,192) + sky_blue = 0x87CEEB, // rgb(135,206,235) + slate_blue = 0x6A5ACD, // rgb(106,90,205) + slate_gray = 0x708090, // rgb(112,128,144) + snow = 0xFFFAFA, // rgb(255,250,250) + spring_green = 0x00FF7F, // rgb(0,255,127) + steel_blue = 0x4682B4, // rgb(70,130,180) + tan = 0xD2B48C, // rgb(210,180,140) + teal = 0x008080, // rgb(0,128,128) + thistle = 0xD8BFD8, // rgb(216,191,216) + tomato = 0xFF6347, // rgb(255,99,71) + turquoise = 0x40E0D0, // rgb(64,224,208) + violet = 0xEE82EE, // rgb(238,130,238) + wheat = 0xF5DEB3, // rgb(245,222,179) + white = 0xFFFFFF, // rgb(255,255,255) + white_smoke = 0xF5F5F5, // rgb(245,245,245) + yellow = 0xFFFF00, // rgb(255,255,0) + yellow_green = 0x9ACD32, // rgb(154,205,50) +}; // enum class color + +// rgb is a struct for red, green and blue colors. +// We use rgb as name because some editors will show it as color direct in the +// editor. +struct rgb { + FMT_CONSTEXPR_DECL rgb() : r(0), g(0), b(0) {} + FMT_CONSTEXPR_DECL rgb(uint8_t r_, uint8_t g_, uint8_t b_) + : r(r_), g(g_), b(b_) {} + FMT_CONSTEXPR_DECL rgb(uint32_t hex) + : r((hex >> 16) & 0xFF), g((hex >> 8) & 0xFF), b((hex) & 0xFF) {} + FMT_CONSTEXPR_DECL rgb(color hex) + : r((uint32_t(hex) >> 16) & 0xFF), g((uint32_t(hex) >> 8) & 0xFF), + b(uint32_t(hex) & 0xFF) {} + uint8_t r; + uint8_t g; + uint8_t b; +}; + +void vprint_rgb(rgb fd, string_view format, format_args args); +void vprint_rgb(rgb fd, rgb bg, string_view format, format_args args); + +/** + Formats a string and prints it to stdout using ANSI escape sequences to + specify foreground color 'fd'. + Example: + fmt::print(fmt::color::red, "Elapsed time: {0:.2f} seconds", 1.23); + */ +template <typename... Args> +inline void print(rgb fd, string_view format_str, const Args & ... args) { + vprint_rgb(fd, format_str, make_format_args(args...)); +} + +/** + Formats a string and prints it to stdout using ANSI escape sequences to + specify foreground color 'fd' and background color 'bg'. + Example: + fmt::print(fmt::color::red, fmt::color::black, "Elapsed time: {0:.2f} seconds", 1.23); + */ +template <typename... Args> +inline void print(rgb fd, rgb bg, string_view format_str, const Args & ... args) { + vprint_rgb(fd, bg, format_str, make_format_args(args...)); +} +#endif // FMT_EXTENDED_COLORS + +#if FMT_USE_USER_DEFINED_LITERALS +namespace internal { + +# if FMT_UDL_TEMPLATE +template <typename Char, Char... CHARS> +class udl_formatter { + public: + template <typename... Args> + std::basic_string<Char> operator()(const Args &... args) const { + FMT_CONSTEXPR_DECL Char s[] = {CHARS..., '\0'}; + FMT_CONSTEXPR_DECL bool invalid_format = + check_format_string<Char, error_handler, Args...>( + basic_string_view<Char>(s, sizeof...(CHARS))); + (void)invalid_format; + return format(s, args...); + } +}; +# else +template <typename Char> +struct udl_formatter { + const Char *str; + + template <typename... Args> + auto operator()(Args && ... args) const + -> decltype(format(str, std::forward<Args>(args)...)) { + return format(str, std::forward<Args>(args)...); + } +}; +# endif // FMT_UDL_TEMPLATE + +template <typename Char> +struct udl_arg { + const Char *str; + + template <typename T> + named_arg<T, Char> operator=(T &&value) const { + return {str, std::forward<T>(value)}; + } +}; + +} // namespace internal + +inline namespace literals { + +# if FMT_UDL_TEMPLATE +template <typename Char, Char... CHARS> +FMT_CONSTEXPR internal::udl_formatter<Char, CHARS...> operator""_format() { + return {}; +} +# else +/** + \rst + User-defined literal equivalent of :func:`fmt::format`. + + **Example**:: + + using namespace fmt::literals; + std::string message = "The answer is {}"_format(42); + \endrst + */ +inline internal::udl_formatter<char> +operator"" _format(const char *s, std::size_t) { return {s}; } +inline internal::udl_formatter<wchar_t> +operator"" _format(const wchar_t *s, std::size_t) { return {s}; } +# endif // FMT_UDL_TEMPLATE + +/** + \rst + User-defined literal equivalent of :func:`fmt::arg`. + + **Example**:: + + using namespace fmt::literals; + fmt::print("Elapsed time: {s:.2f} seconds", "s"_a=1.23); + \endrst + */ +inline internal::udl_arg<char> +operator"" _a(const char *s, std::size_t) { return {s}; } +inline internal::udl_arg<wchar_t> +operator"" _a(const wchar_t *s, std::size_t) { return {s}; } +} // inline namespace literals +#endif // FMT_USE_USER_DEFINED_LITERALS +FMT_END_NAMESPACE + +#define FMT_STRING(s) [] { \ + struct S : fmt::format_string { \ + static FMT_CONSTEXPR decltype(s) data() { return s; } \ + static FMT_CONSTEXPR size_t size() { return sizeof(s); } \ + }; \ + return S{}; \ + }() + +#ifndef FMT_NO_FMT_STRING_ALIAS +/** + \rst + Constructs a compile-time format string. + + **Example**:: + + #include <fmt/format.h> + // A compile-time error because 'd' is an invalid specifier for strings. + std::string s = format(fmt("{:d}"), "foo"); + \endrst + */ +# define fmt(s) FMT_STRING(s) +#endif + +#ifdef FMT_HEADER_ONLY +# define FMT_FUNC inline +# include "format-inl.h" +#else +# define FMT_FUNC +#endif + +// Restore warnings. +#if FMT_GCC_VERSION >= 406 || FMT_CLANG_VERSION +# pragma GCC diagnostic pop +#endif + +#endif // FMT_FORMAT_H_
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fmt/include/fmt/ostream.h Fri Jul 13 13:15:12 2018 +0200 @@ -0,0 +1,162 @@ +// Formatting library for C++ - std::ostream support +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_OSTREAM_H_ +#define FMT_OSTREAM_H_ + +#include "format.h" +#include <ostream> + +FMT_BEGIN_NAMESPACE +namespace internal { + +template <class Char> +class formatbuf : public std::basic_streambuf<Char> { + private: + typedef typename std::basic_streambuf<Char>::int_type int_type; + typedef typename std::basic_streambuf<Char>::traits_type traits_type; + + basic_buffer<Char> &buffer_; + + public: + formatbuf(basic_buffer<Char> &buffer) : buffer_(buffer) {} + + protected: + // The put-area is actually always empty. This makes the implementation + // simpler and has the advantage that the streambuf and the buffer are always + // in sync and sputc never writes into uninitialized memory. The obvious + // disadvantage is that each call to sputc always results in a (virtual) call + // to overflow. There is no disadvantage here for sputn since this always + // results in a call to xsputn. + + int_type overflow(int_type ch = traits_type::eof()) FMT_OVERRIDE { + if (!traits_type::eq_int_type(ch, traits_type::eof())) + buffer_.push_back(static_cast<Char>(ch)); + return ch; + } + + std::streamsize xsputn(const Char *s, std::streamsize count) FMT_OVERRIDE { + buffer_.append(s, s + count); + return count; + } +}; + +template <typename Char> +struct test_stream : std::basic_ostream<Char> { + private: + struct null; + // Hide all operator<< from std::basic_ostream<Char>. + void operator<<(null); +}; + +// Checks if T has a user-defined operator<< (e.g. not a member of std::ostream). +template <typename T, typename Char> +class is_streamable { + private: + template <typename U> + static decltype( + internal::declval<test_stream<Char>&>() + << internal::declval<U>(), std::true_type()) test(int); + + template <typename> + static std::false_type test(...); + + typedef decltype(test<T>(0)) result; + + public: + // std::string operator<< is not considered user-defined because we handle strings + // specially. + static const bool value = result::value && !std::is_same<T, std::string>::value; +}; + +// Disable conversion to int if T has an overloaded operator<< which is a free +// function (not a member of std::ostream). +template <typename T, typename Char> +class convert_to_int<T, Char, true> { + public: + static const bool value = + convert_to_int<T, Char, false>::value && !is_streamable<T, Char>::value; +}; + +// Write the content of buf to os. +template <typename Char> +void write(std::basic_ostream<Char> &os, basic_buffer<Char> &buf) { + const Char *data = buf.data(); + typedef std::make_unsigned<std::streamsize>::type UnsignedStreamSize; + UnsignedStreamSize size = buf.size(); + UnsignedStreamSize max_size = + internal::to_unsigned((std::numeric_limits<std::streamsize>::max)()); + do { + UnsignedStreamSize n = size <= max_size ? size : max_size; + os.write(data, static_cast<std::streamsize>(n)); + data += n; + size -= n; + } while (size != 0); +} + +template <typename Char, typename T> +void format_value(basic_buffer<Char> &buffer, const T &value) { + internal::formatbuf<Char> format_buf(buffer); + std::basic_ostream<Char> output(&format_buf); + output.exceptions(std::ios_base::failbit | std::ios_base::badbit); + output << value; + buffer.resize(buffer.size()); +} + +// Disable builtin formatting of enums and use operator<< instead. +template <typename T> +struct format_enum<T, + typename std::enable_if<std::is_enum<T>::value>::type> : std::false_type {}; +} // namespace internal + +// Formats an object of type T that has an overloaded ostream operator<<. +template <typename T, typename Char> +struct formatter<T, Char, + typename std::enable_if<internal::is_streamable<T, Char>::value>::type> + : formatter<basic_string_view<Char>, Char> { + + template <typename Context> + auto format(const T &value, Context &ctx) -> decltype(ctx.out()) { + basic_memory_buffer<Char> buffer; + internal::format_value(buffer, value); + basic_string_view<Char> str(buffer.data(), buffer.size()); + formatter<basic_string_view<Char>, Char>::format(str, ctx); + return ctx.out(); + } +}; + +template <typename Char> +inline void vprint(std::basic_ostream<Char> &os, + basic_string_view<Char> format_str, + basic_format_args<typename buffer_context<Char>::type> args) { + basic_memory_buffer<Char> buffer; + vformat_to(buffer, format_str, args); + internal::write(os, buffer); +} +/** + \rst + Prints formatted data to the stream *os*. + + **Example**:: + + fmt::print(cerr, "Don't {}!", "panic"); + \endrst + */ +template <typename... Args> +inline void print(std::ostream &os, string_view format_str, + const Args & ... args) { + vprint<char>(os, format_str, make_format_args<format_context>(args...)); +} + +template <typename... Args> +inline void print(std::wostream &os, wstring_view format_str, + const Args & ... args) { + vprint<wchar_t>(os, format_str, make_format_args<wformat_context>(args...)); +} +FMT_END_NAMESPACE + +#endif // FMT_OSTREAM_H_
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fmt/include/fmt/posix.h Fri Jul 13 13:15:12 2018 +0200 @@ -0,0 +1,417 @@ +// A C++ interface to POSIX functions. +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_POSIX_H_ +#define FMT_POSIX_H_ + +#if defined(__MINGW32__) || defined(__CYGWIN__) +// Workaround MinGW bug https://sourceforge.net/p/mingw/bugs/2024/. +# undef __STRICT_ANSI__ +#endif + +#include <errno.h> +#include <fcntl.h> // for O_RDONLY +#include <locale.h> // for locale_t +#include <stdio.h> +#include <stdlib.h> // for strtod_l + +#include <cstddef> + +#if defined __APPLE__ || defined(__FreeBSD__) +# include <xlocale.h> // for LC_NUMERIC_MASK on OS X +#endif + +#include "format.h" + +#ifndef FMT_POSIX +# if defined(_WIN32) && !defined(__MINGW32__) +// Fix warnings about deprecated symbols. +# define FMT_POSIX(call) _##call +# else +# define FMT_POSIX(call) call +# endif +#endif + +// Calls to system functions are wrapped in FMT_SYSTEM for testability. +#ifdef FMT_SYSTEM +# define FMT_POSIX_CALL(call) FMT_SYSTEM(call) +#else +# define FMT_SYSTEM(call) call +# ifdef _WIN32 +// Fix warnings about deprecated symbols. +# define FMT_POSIX_CALL(call) ::_##call +# else +# define FMT_POSIX_CALL(call) ::call +# endif +#endif + +// Retries the expression while it evaluates to error_result and errno +// equals to EINTR. +#ifndef _WIN32 +# define FMT_RETRY_VAL(result, expression, error_result) \ + do { \ + result = (expression); \ + } while (result == error_result && errno == EINTR) +#else +# define FMT_RETRY_VAL(result, expression, error_result) result = (expression) +#endif + +#define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1) + +FMT_BEGIN_NAMESPACE + +/** + \rst + A reference to a null-terminated string. It can be constructed from a C + string or ``std::string``. + + You can use one of the following typedefs for common character types: + + +---------------+-----------------------------+ + | Type | Definition | + +===============+=============================+ + | cstring_view | basic_cstring_view<char> | + +---------------+-----------------------------+ + | wcstring_view | basic_cstring_view<wchar_t> | + +---------------+-----------------------------+ + + This class is most useful as a parameter type to allow passing + different types of strings to a function, for example:: + + template <typename... Args> + std::string format(cstring_view format_str, const Args & ... args); + + format("{}", 42); + format(std::string("{}"), 42); + \endrst + */ +template <typename Char> +class basic_cstring_view { + private: + const Char *data_; + + public: + /** Constructs a string reference object from a C string. */ + basic_cstring_view(const Char *s) : data_(s) {} + + /** + \rst + Constructs a string reference from an ``std::string`` object. + \endrst + */ + basic_cstring_view(const std::basic_string<Char> &s) : data_(s.c_str()) {} + + /** Returns the pointer to a C string. */ + const Char *c_str() const { return data_; } +}; + +typedef basic_cstring_view<char> cstring_view; +typedef basic_cstring_view<wchar_t> wcstring_view; + +// An error code. +class error_code { + private: + int value_; + + public: + explicit error_code(int value = 0) FMT_NOEXCEPT : value_(value) {} + + int get() const FMT_NOEXCEPT { return value_; } +}; + +// A buffered file. +class buffered_file { + private: + FILE *file_; + + friend class file; + + explicit buffered_file(FILE *f) : file_(f) {} + + public: + // Constructs a buffered_file object which doesn't represent any file. + buffered_file() FMT_NOEXCEPT : file_(FMT_NULL) {} + + // Destroys the object closing the file it represents if any. + FMT_API ~buffered_file() FMT_DTOR_NOEXCEPT; + +#if !FMT_USE_RVALUE_REFERENCES + // Emulate a move constructor and a move assignment operator if rvalue + // references are not supported. + + private: + // A proxy object to emulate a move constructor. + // It is private to make it impossible call operator Proxy directly. + struct Proxy { + FILE *file; + }; + +public: + // A "move constructor" for moving from a temporary. + buffered_file(Proxy p) FMT_NOEXCEPT : file_(p.file) {} + + // A "move constructor" for moving from an lvalue. + buffered_file(buffered_file &f) FMT_NOEXCEPT : file_(f.file_) { + f.file_ = FMT_NULL; + } + + // A "move assignment operator" for moving from a temporary. + buffered_file &operator=(Proxy p) { + close(); + file_ = p.file; + return *this; + } + + // A "move assignment operator" for moving from an lvalue. + buffered_file &operator=(buffered_file &other) { + close(); + file_ = other.file_; + other.file_ = FMT_NULL; + return *this; + } + + // Returns a proxy object for moving from a temporary: + // buffered_file file = buffered_file(...); + operator Proxy() FMT_NOEXCEPT { + Proxy p = {file_}; + file_ = FMT_NULL; + return p; + } + +#else + private: + FMT_DISALLOW_COPY_AND_ASSIGN(buffered_file); + + public: + buffered_file(buffered_file &&other) FMT_NOEXCEPT : file_(other.file_) { + other.file_ = FMT_NULL; + } + + buffered_file& operator=(buffered_file &&other) { + close(); + file_ = other.file_; + other.file_ = FMT_NULL; + return *this; + } +#endif + + // Opens a file. + FMT_API buffered_file(cstring_view filename, cstring_view mode); + + // Closes the file. + FMT_API void close(); + + // Returns the pointer to a FILE object representing this file. + FILE *get() const FMT_NOEXCEPT { return file_; } + + // We place parentheses around fileno to workaround a bug in some versions + // of MinGW that define fileno as a macro. + FMT_API int (fileno)() const; + + void vprint(string_view format_str, format_args args) { + fmt::vprint(file_, format_str, args); + } + + template <typename... Args> + inline void print(string_view format_str, const Args & ... args) { + vprint(format_str, make_format_args(args...)); + } +}; + +// A file. Closed file is represented by a file object with descriptor -1. +// Methods that are not declared with FMT_NOEXCEPT may throw +// fmt::system_error in case of failure. Note that some errors such as +// closing the file multiple times will cause a crash on Windows rather +// than an exception. You can get standard behavior by overriding the +// invalid parameter handler with _set_invalid_parameter_handler. +class file { + private: + int fd_; // File descriptor. + + // Constructs a file object with a given descriptor. + explicit file(int fd) : fd_(fd) {} + + public: + // Possible values for the oflag argument to the constructor. + enum { + RDONLY = FMT_POSIX(O_RDONLY), // Open for reading only. + WRONLY = FMT_POSIX(O_WRONLY), // Open for writing only. + RDWR = FMT_POSIX(O_RDWR) // Open for reading and writing. + }; + + // Constructs a file object which doesn't represent any file. + file() FMT_NOEXCEPT : fd_(-1) {} + + // Opens a file and constructs a file object representing this file. + FMT_API file(cstring_view path, int oflag); + +#if !FMT_USE_RVALUE_REFERENCES + // Emulate a move constructor and a move assignment operator if rvalue + // references are not supported. + + private: + // A proxy object to emulate a move constructor. + // It is private to make it impossible call operator Proxy directly. + struct Proxy { + int fd; + }; + + public: + // A "move constructor" for moving from a temporary. + file(Proxy p) FMT_NOEXCEPT : fd_(p.fd) {} + + // A "move constructor" for moving from an lvalue. + file(file &other) FMT_NOEXCEPT : fd_(other.fd_) { + other.fd_ = -1; + } + + // A "move assignment operator" for moving from a temporary. + file &operator=(Proxy p) { + close(); + fd_ = p.fd; + return *this; + } + + // A "move assignment operator" for moving from an lvalue. + file &operator=(file &other) { + close(); + fd_ = other.fd_; + other.fd_ = -1; + return *this; + } + + // Returns a proxy object for moving from a temporary: + // file f = file(...); + operator Proxy() FMT_NOEXCEPT { + Proxy p = {fd_}; + fd_ = -1; + return p; + } + +#else + private: + FMT_DISALLOW_COPY_AND_ASSIGN(file); + + public: + file(file &&other) FMT_NOEXCEPT : fd_(other.fd_) { + other.fd_ = -1; + } + + file& operator=(file &&other) { + close(); + fd_ = other.fd_; + other.fd_ = -1; + return *this; + } +#endif + + // Destroys the object closing the file it represents if any. + FMT_API ~file() FMT_DTOR_NOEXCEPT; + + // Returns the file descriptor. + int descriptor() const FMT_NOEXCEPT { return fd_; } + + // Closes the file. + FMT_API void close(); + + // Returns the file size. The size has signed type for consistency with + // stat::st_size. + FMT_API long long size() const; + + // Attempts to read count bytes from the file into the specified buffer. + FMT_API std::size_t read(void *buffer, std::size_t count); + + // Attempts to write count bytes from the specified buffer to the file. + FMT_API std::size_t write(const void *buffer, std::size_t count); + + // Duplicates a file descriptor with the dup function and returns + // the duplicate as a file object. + FMT_API static file dup(int fd); + + // Makes fd be the copy of this file descriptor, closing fd first if + // necessary. + FMT_API void dup2(int fd); + + // Makes fd be the copy of this file descriptor, closing fd first if + // necessary. + FMT_API void dup2(int fd, error_code &ec) FMT_NOEXCEPT; + + // Creates a pipe setting up read_end and write_end file objects for reading + // and writing respectively. + FMT_API static void pipe(file &read_end, file &write_end); + + // Creates a buffered_file object associated with this file and detaches + // this file object from the file. + FMT_API buffered_file fdopen(const char *mode); +}; + +// Returns the memory page size. +long getpagesize(); + +#if (defined(LC_NUMERIC_MASK) || defined(_MSC_VER)) && \ + !defined(__ANDROID__) && !defined(__CYGWIN__) && !defined(__OpenBSD__) +# define FMT_LOCALE +#endif + +#ifdef FMT_LOCALE +// A "C" numeric locale. +class Locale { + private: +# ifdef _MSC_VER + typedef _locale_t locale_t; + + enum { LC_NUMERIC_MASK = LC_NUMERIC }; + + static locale_t newlocale(int category_mask, const char *locale, locale_t) { + return _create_locale(category_mask, locale); + } + + static void freelocale(locale_t locale) { + _free_locale(locale); + } + + static double strtod_l(const char *nptr, char **endptr, _locale_t locale) { + return _strtod_l(nptr, endptr, locale); + } +# endif + + locale_t locale_; + + FMT_DISALLOW_COPY_AND_ASSIGN(Locale); + + public: + typedef locale_t Type; + + Locale() : locale_(newlocale(LC_NUMERIC_MASK, "C", FMT_NULL)) { + if (!locale_) + FMT_THROW(system_error(errno, "cannot create locale")); + } + ~Locale() { freelocale(locale_); } + + Type get() const { return locale_; } + + // Converts string to floating-point number and advances str past the end + // of the parsed input. + double strtod(const char *&str) const { + char *end = FMT_NULL; + double result = strtod_l(str, &end, locale_); + str = end; + return result; + } +}; +#endif // FMT_LOCALE +FMT_END_NAMESPACE + +#if !FMT_USE_RVALUE_REFERENCES +namespace std { +// For compatibility with C++98. +inline fmt::buffered_file &move(fmt::buffered_file &f) { return f; } +inline fmt::file &move(fmt::file &f) { return f; } +} +#endif + +#endif // FMT_POSIX_H_
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fmt/include/fmt/printf.h Fri Jul 13 13:15:12 2018 +0200 @@ -0,0 +1,728 @@ +// Formatting library for C++ +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_PRINTF_H_ +#define FMT_PRINTF_H_ + +#include <algorithm> // std::fill_n +#include <limits> // std::numeric_limits + +#include "ostream.h" + +FMT_BEGIN_NAMESPACE +namespace internal { + +// Checks if a value fits in int - used to avoid warnings about comparing +// signed and unsigned integers. +template <bool IsSigned> +struct int_checker { + template <typename T> + static bool fits_in_int(T value) { + unsigned max = std::numeric_limits<int>::max(); + return value <= max; + } + static bool fits_in_int(bool) { return true; } +}; + +template <> +struct int_checker<true> { + template <typename T> + static bool fits_in_int(T value) { + return value >= std::numeric_limits<int>::min() && + value <= std::numeric_limits<int>::max(); + } + static bool fits_in_int(int) { return true; } +}; + +class printf_precision_handler: public function<int> { + public: + template <typename T> + typename std::enable_if<std::is_integral<T>::value, int>::type + operator()(T value) { + if (!int_checker<std::numeric_limits<T>::is_signed>::fits_in_int(value)) + FMT_THROW(format_error("number is too big")); + return static_cast<int>(value); + } + + template <typename T> + typename std::enable_if<!std::is_integral<T>::value, int>::type operator()(T) { + FMT_THROW(format_error("precision is not integer")); + return 0; + } +}; + +// An argument visitor that returns true iff arg is a zero integer. +class is_zero_int: public function<bool> { + public: + template <typename T> + typename std::enable_if<std::is_integral<T>::value, bool>::type + operator()(T value) { return value == 0; } + + template <typename T> + typename std::enable_if<!std::is_integral<T>::value, bool>::type + operator()(T) { return false; } +}; + +template <typename T> +struct make_unsigned_or_bool : std::make_unsigned<T> {}; + +template <> +struct make_unsigned_or_bool<bool> { + typedef bool type; +}; + +template <typename T, typename Context> +class arg_converter: public function<void> { + private: + typedef typename Context::char_type Char; + + basic_format_arg<Context> &arg_; + typename Context::char_type type_; + + public: + arg_converter(basic_format_arg<Context> &arg, Char type) + : arg_(arg), type_(type) {} + + void operator()(bool value) { + if (type_ != 's') + operator()<bool>(value); + } + + template <typename U> + typename std::enable_if<std::is_integral<U>::value>::type + operator()(U value) { + bool is_signed = type_ == 'd' || type_ == 'i'; + typedef typename std::conditional< + std::is_same<T, void>::value, U, T>::type TargetType; + if (const_check(sizeof(TargetType) <= sizeof(int))) { + // Extra casts are used to silence warnings. + if (is_signed) { + arg_ = internal::make_arg<Context>( + static_cast<int>(static_cast<TargetType>(value))); + } else { + typedef typename make_unsigned_or_bool<TargetType>::type Unsigned; + arg_ = internal::make_arg<Context>( + static_cast<unsigned>(static_cast<Unsigned>(value))); + } + } else { + if (is_signed) { + // glibc's printf doesn't sign extend arguments of smaller types: + // std::printf("%lld", -42); // prints "4294967254" + // but we don't have to do the same because it's a UB. + arg_ = internal::make_arg<Context>(static_cast<long long>(value)); + } else { + arg_ = internal::make_arg<Context>( + static_cast<typename make_unsigned_or_bool<U>::type>(value)); + } + } + } + + template <typename U> + typename std::enable_if<!std::is_integral<U>::value>::type operator()(U) { + // No coversion needed for non-integral types. + } +}; + +// Converts an integer argument to T for printf, if T is an integral type. +// If T is void, the argument is converted to corresponding signed or unsigned +// type depending on the type specifier: 'd' and 'i' - signed, other - +// unsigned). +template <typename T, typename Context, typename Char> +void convert_arg(basic_format_arg<Context> &arg, Char type) { + visit(arg_converter<T, Context>(arg, type), arg); +} + +// Converts an integer argument to char for printf. +template <typename Context> +class char_converter: public function<void> { + private: + basic_format_arg<Context> &arg_; + + FMT_DISALLOW_COPY_AND_ASSIGN(char_converter); + + public: + explicit char_converter(basic_format_arg<Context> &arg) : arg_(arg) {} + + template <typename T> + typename std::enable_if<std::is_integral<T>::value>::type + operator()(T value) { + typedef typename Context::char_type Char; + arg_ = internal::make_arg<Context>(static_cast<Char>(value)); + } + + template <typename T> + typename std::enable_if<!std::is_integral<T>::value>::type operator()(T) { + // No coversion needed for non-integral types. + } +}; + +// Checks if an argument is a valid printf width specifier and sets +// left alignment if it is negative. +template <typename Char> +class printf_width_handler: public function<unsigned> { + private: + typedef basic_format_specs<Char> format_specs; + + format_specs &spec_; + + FMT_DISALLOW_COPY_AND_ASSIGN(printf_width_handler); + + public: + explicit printf_width_handler(format_specs &spec) : spec_(spec) {} + + template <typename T> + typename std::enable_if<std::is_integral<T>::value, unsigned>::type + operator()(T value) { + typedef typename internal::int_traits<T>::main_type UnsignedType; + UnsignedType width = static_cast<UnsignedType>(value); + if (internal::is_negative(value)) { + spec_.align_ = ALIGN_LEFT; + width = 0 - width; + } + unsigned int_max = std::numeric_limits<int>::max(); + if (width > int_max) + FMT_THROW(format_error("number is too big")); + return static_cast<unsigned>(width); + } + + template <typename T> + typename std::enable_if<!std::is_integral<T>::value, unsigned>::type + operator()(T) { + FMT_THROW(format_error("width is not integer")); + return 0; + } +}; +} // namespace internal + +template <typename Range> +class printf_arg_formatter; + +template < + typename OutputIt, typename Char, + typename ArgFormatter = + printf_arg_formatter<back_insert_range<internal::basic_buffer<Char>>>> +class basic_printf_context; + +/** + \rst + The ``printf`` argument formatter. + \endrst + */ +template <typename Range> +class printf_arg_formatter: + public internal::function< + typename internal::arg_formatter_base<Range>::iterator>, + public internal::arg_formatter_base<Range> { + private: + typedef typename Range::value_type char_type; + typedef decltype(internal::declval<Range>().begin()) iterator; + typedef internal::arg_formatter_base<Range> base; + typedef basic_printf_context<iterator, char_type> context_type; + + context_type &context_; + + void write_null_pointer(char) { + this->spec().type_ = 0; + this->write("(nil)"); + } + + void write_null_pointer(wchar_t) { + this->spec().type_ = 0; + this->write(L"(nil)"); + } + + public: + typedef typename base::format_specs format_specs; + + /** + \rst + Constructs an argument formatter object. + *buffer* is a reference to the output buffer and *spec* contains format + specifier information for standard argument types. + \endrst + */ + printf_arg_formatter(internal::basic_buffer<char_type> &buffer, + format_specs &spec, context_type &ctx) + : base(back_insert_range<internal::basic_buffer<char_type>>(buffer), spec), + context_(ctx) {} + + template <typename T> + typename std::enable_if<std::is_integral<T>::value, iterator>::type + operator()(T value) { + // MSVC2013 fails to compile separate overloads for bool and char_type so + // use std::is_same instead. + if (std::is_same<T, bool>::value) { + format_specs &fmt_spec = this->spec(); + if (fmt_spec.type_ != 's') + return base::operator()(value ? 1 : 0); + fmt_spec.type_ = 0; + this->write(value != 0); + } else if (std::is_same<T, char_type>::value) { + format_specs &fmt_spec = this->spec(); + if (fmt_spec.type_ && fmt_spec.type_ != 'c') + return (*this)(static_cast<int>(value)); + fmt_spec.flags_ = 0; + fmt_spec.align_ = ALIGN_RIGHT; + return base::operator()(value); + } else { + return base::operator()(value); + } + return this->out(); + } + + template <typename T> + typename std::enable_if<std::is_floating_point<T>::value, iterator>::type + operator()(T value) { + return base::operator()(value); + } + + /** Formats a null-terminated C string. */ + iterator operator()(const char *value) { + if (value) + base::operator()(value); + else if (this->spec().type_ == 'p') + write_null_pointer(char_type()); + else + this->write("(null)"); + return this->out(); + } + + /** Formats a null-terminated wide C string. */ + iterator operator()(const wchar_t *value) { + if (value) + base::operator()(value); + else if (this->spec().type_ == 'p') + write_null_pointer(char_type()); + else + this->write(L"(null)"); + return this->out(); + } + + iterator operator()(basic_string_view<char_type> value) { + return base::operator()(value); + } + + iterator operator()(monostate value) { + return base::operator()(value); + } + + /** Formats a pointer. */ + iterator operator()(const void *value) { + if (value) + return base::operator()(value); + this->spec().type_ = 0; + write_null_pointer(char_type()); + return this->out(); + } + + /** Formats an argument of a custom (user-defined) type. */ + iterator operator()(typename basic_format_arg<context_type>::handle handle) { + handle.format(context_); + return this->out(); + } +}; + +template <typename T> +struct printf_formatter { + template <typename ParseContext> + auto parse(ParseContext &ctx) -> decltype(ctx.begin()) { return ctx.begin(); } + + template <typename FormatContext> + auto format(const T &value, FormatContext &ctx) -> decltype(ctx.out()) { + internal::format_value(internal::get_container(ctx.out()), value); + return ctx.out(); + } +}; + +/** This template formats data and writes the output to a writer. */ +template <typename OutputIt, typename Char, typename ArgFormatter> +class basic_printf_context : + private internal::context_base< + OutputIt, basic_printf_context<OutputIt, Char, ArgFormatter>, Char> { + public: + /** The character type for the output. */ + typedef Char char_type; + + template <typename T> + struct formatter_type { typedef printf_formatter<T> type; }; + + private: + typedef internal::context_base<OutputIt, basic_printf_context, Char> base; + typedef typename base::format_arg format_arg; + typedef basic_format_specs<char_type> format_specs; + typedef internal::null_terminating_iterator<char_type> iterator; + + void parse_flags(format_specs &spec, iterator &it); + + // Returns the argument with specified index or, if arg_index is equal + // to the maximum unsigned value, the next argument. + format_arg get_arg( + iterator it, + unsigned arg_index = (std::numeric_limits<unsigned>::max)()); + + // Parses argument index, flags and width and returns the argument index. + unsigned parse_header(iterator &it, format_specs &spec); + + public: + /** + \rst + Constructs a ``printf_context`` object. References to the arguments and + the writer are stored in the context object so make sure they have + appropriate lifetimes. + \endrst + */ + basic_printf_context(OutputIt out, basic_string_view<char_type> format_str, + basic_format_args<basic_printf_context> args) + : base(out, format_str, args) {} + + using base::parse_context; + using base::out; + using base::advance_to; + + /** Formats stored arguments and writes the output to the range. */ + void format(); +}; + +template <typename OutputIt, typename Char, typename AF> +void basic_printf_context<OutputIt, Char, AF>::parse_flags( + format_specs &spec, iterator &it) { + for (;;) { + switch (*it++) { + case '-': + spec.align_ = ALIGN_LEFT; + break; + case '+': + spec.flags_ |= SIGN_FLAG | PLUS_FLAG; + break; + case '0': + spec.fill_ = '0'; + break; + case ' ': + spec.flags_ |= SIGN_FLAG; + break; + case '#': + spec.flags_ |= HASH_FLAG; + break; + default: + --it; + return; + } + } +} + +template <typename OutputIt, typename Char, typename AF> +typename basic_printf_context<OutputIt, Char, AF>::format_arg + basic_printf_context<OutputIt, Char, AF>::get_arg( + iterator it, unsigned arg_index) { + (void)it; + if (arg_index == std::numeric_limits<unsigned>::max()) + return this->do_get_arg(this->parse_context().next_arg_id()); + return base::get_arg(arg_index - 1); +} + +template <typename OutputIt, typename Char, typename AF> +unsigned basic_printf_context<OutputIt, Char, AF>::parse_header( + iterator &it, format_specs &spec) { + unsigned arg_index = std::numeric_limits<unsigned>::max(); + char_type c = *it; + if (c >= '0' && c <= '9') { + // Parse an argument index (if followed by '$') or a width possibly + // preceded with '0' flag(s). + internal::error_handler eh; + unsigned value = parse_nonnegative_int(it, eh); + if (*it == '$') { // value is an argument index + ++it; + arg_index = value; + } else { + if (c == '0') + spec.fill_ = '0'; + if (value != 0) { + // Nonzero value means that we parsed width and don't need to + // parse it or flags again, so return now. + spec.width_ = value; + return arg_index; + } + } + } + parse_flags(spec, it); + // Parse width. + if (*it >= '0' && *it <= '9') { + internal::error_handler eh; + spec.width_ = parse_nonnegative_int(it, eh); + } else if (*it == '*') { + ++it; + spec.width_ = + visit(internal::printf_width_handler<char_type>(spec), get_arg(it)); + } + return arg_index; +} + +template <typename OutputIt, typename Char, typename AF> +void basic_printf_context<OutputIt, Char, AF>::format() { + auto &buffer = internal::get_container(this->out()); + auto start = iterator(this->parse_context()); + auto it = start; + using internal::pointer_from; + while (*it) { + char_type c = *it++; + if (c != '%') continue; + if (*it == c) { + buffer.append(pointer_from(start), pointer_from(it)); + start = ++it; + continue; + } + buffer.append(pointer_from(start), pointer_from(it) - 1); + + format_specs spec; + spec.align_ = ALIGN_RIGHT; + + // Parse argument index, flags and width. + unsigned arg_index = parse_header(it, spec); + + // Parse precision. + if (*it == '.') { + ++it; + if ('0' <= *it && *it <= '9') { + internal::error_handler eh; + spec.precision_ = static_cast<int>(parse_nonnegative_int(it, eh)); + } else if (*it == '*') { + ++it; + spec.precision_ = + visit(internal::printf_precision_handler(), get_arg(it)); + } else { + spec.precision_ = 0; + } + } + + format_arg arg = get_arg(it, arg_index); + if (spec.flag(HASH_FLAG) && visit(internal::is_zero_int(), arg)) + spec.flags_ &= ~internal::to_unsigned<int>(HASH_FLAG); + if (spec.fill_ == '0') { + if (arg.is_arithmetic()) + spec.align_ = ALIGN_NUMERIC; + else + spec.fill_ = ' '; // Ignore '0' flag for non-numeric types. + } + + // Parse length and convert the argument to the required type. + using internal::convert_arg; + switch (*it++) { + case 'h': + if (*it == 'h') + convert_arg<signed char>(arg, *++it); + else + convert_arg<short>(arg, *it); + break; + case 'l': + if (*it == 'l') + convert_arg<long long>(arg, *++it); + else + convert_arg<long>(arg, *it); + break; + case 'j': + convert_arg<intmax_t>(arg, *it); + break; + case 'z': + convert_arg<std::size_t>(arg, *it); + break; + case 't': + convert_arg<std::ptrdiff_t>(arg, *it); + break; + case 'L': + // printf produces garbage when 'L' is omitted for long double, no + // need to do the same. + break; + default: + --it; + convert_arg<void>(arg, *it); + } + + // Parse type. + if (!*it) + FMT_THROW(format_error("invalid format string")); + spec.type_ = static_cast<char>(*it++); + if (arg.is_integral()) { + // Normalize type. + switch (spec.type_) { + case 'i': case 'u': + spec.type_ = 'd'; + break; + case 'c': + // TODO: handle wchar_t better? + visit(internal::char_converter<basic_printf_context>(arg), arg); + break; + } + } + + start = it; + + // Format argument. + visit(AF(buffer, spec, *this), arg); + } + buffer.append(pointer_from(start), pointer_from(it)); +} + +template <typename Char, typename Context> +void printf(internal::basic_buffer<Char> &buf, basic_string_view<Char> format, + basic_format_args<Context> args) { + Context(std::back_inserter(buf), format, args).format(); +} + +template <typename Buffer> +struct printf_context { + typedef basic_printf_context< + std::back_insert_iterator<Buffer>, typename Buffer::value_type> type; +}; + +template <typename ...Args> +inline format_arg_store<printf_context<internal::buffer>::type, Args...> + make_printf_args(const Args & ... args) { + return format_arg_store<printf_context<internal::buffer>::type, Args...>( + args...); +} +typedef basic_format_args<printf_context<internal::buffer>::type> printf_args; +typedef basic_format_args<printf_context<internal::wbuffer>::type> wprintf_args; + +inline std::string vsprintf(string_view format, printf_args args) { + memory_buffer buffer; + printf(buffer, format, args); + return to_string(buffer); +} + +/** + \rst + Formats arguments and returns the result as a string. + + **Example**:: + + std::string message = fmt::sprintf("The answer is %d", 42); + \endrst +*/ +template <typename... Args> +inline std::string sprintf(string_view format_str, const Args & ... args) { + return vsprintf(format_str, + make_format_args<typename printf_context<internal::buffer>::type>(args...)); +} + +inline std::wstring vsprintf(wstring_view format, wprintf_args args) { + wmemory_buffer buffer; + printf(buffer, format, args); + return to_string(buffer); +} + +template <typename... Args> +inline std::wstring sprintf(wstring_view format_str, const Args & ... args) { + return vsprintf(format_str, + make_format_args<typename printf_context<internal::wbuffer>::type>(args...)); +} + +template <typename Char> +inline int vfprintf(std::FILE *f, basic_string_view<Char> format, + basic_format_args<typename printf_context< + internal::basic_buffer<Char>>::type> args) { + basic_memory_buffer<Char> buffer; + printf(buffer, format, args); + std::size_t size = buffer.size(); + return std::fwrite( + buffer.data(), sizeof(Char), size, f) < size ? -1 : static_cast<int>(size); +} + +/** + \rst + Prints formatted data to the file *f*. + + **Example**:: + + fmt::fprintf(stderr, "Don't %s!", "panic"); + \endrst + */ +template <typename... Args> +inline int fprintf(std::FILE *f, string_view format_str, const Args & ... args) { + auto vargs = make_format_args< + typename printf_context<internal::buffer>::type>(args...); + return vfprintf<char>(f, format_str, vargs); +} + +template <typename... Args> +inline int fprintf(std::FILE *f, wstring_view format_str, + const Args & ... args) { + return vfprintf(f, format_str, + make_format_args<typename printf_context<internal::wbuffer>::type>(args...)); +} + +inline int vprintf(string_view format, printf_args args) { + return vfprintf(stdout, format, args); +} + +inline int vprintf(wstring_view format, wprintf_args args) { + return vfprintf(stdout, format, args); +} + +/** + \rst + Prints formatted data to ``stdout``. + + **Example**:: + + fmt::printf("Elapsed time: %.2f seconds", 1.23); + \endrst + */ +template <typename... Args> +inline int printf(string_view format_str, const Args & ... args) { + return vprintf(format_str, + make_format_args<typename printf_context<internal::buffer>::type>(args...)); +} + +template <typename... Args> +inline int printf(wstring_view format_str, const Args & ... args) { + return vprintf(format_str, + make_format_args<typename printf_context<internal::wbuffer>::type>(args...)); +} + +inline int vfprintf(std::ostream &os, string_view format_str, + printf_args args) { + memory_buffer buffer; + printf(buffer, format_str, args); + internal::write(os, buffer); + return static_cast<int>(buffer.size()); +} + +inline int vfprintf(std::wostream &os, wstring_view format_str, + wprintf_args args) { + wmemory_buffer buffer; + printf(buffer, format_str, args); + internal::write(os, buffer); + return static_cast<int>(buffer.size()); +} + +/** + \rst + Prints formatted data to the stream *os*. + + **Example**:: + + fmt::fprintf(cerr, "Don't %s!", "panic"); + \endrst + */ +template <typename... Args> +inline int fprintf(std::ostream &os, string_view format_str, + const Args & ... args) { + auto vargs = make_format_args< + typename printf_context<internal::buffer>::type>(args...); + return vfprintf(os, format_str, vargs); +} + +template <typename... Args> +inline int fprintf(std::wostream &os, wstring_view format_str, + const Args & ... args) { + auto vargs = make_format_args< + typename printf_context<internal::buffer>::type>(args...); + return vfprintf(os, format_str, vargs); +} +FMT_END_NAMESPACE + +#endif // FMT_PRINTF_H_
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fmt/include/fmt/ranges.h Fri Jul 13 13:15:12 2018 +0200 @@ -0,0 +1,305 @@ +// Formatting library for C++ - the core API +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. +// +// Copyright (c) 2018 - present, Remotion (Igor Schulz) +// All Rights Reserved +// {fmt} support for ranges, containers and types tuple interface. + +#ifndef FMT_RANGES_H_ +#define FMT_RANGES_H_ + +#include "format.h" +#include <type_traits> + +// output only up to N items from the range. +#ifndef FMT_RANGE_OUTPUT_LENGTH_LIMIT +# define FMT_RANGE_OUTPUT_LENGTH_LIMIT 256 +#endif + +FMT_BEGIN_NAMESPACE + +template <typename Char> +struct formatting_base { + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } +}; + +template <typename Char, typename Enable = void> +struct formatting_range : formatting_base<Char> { + static FMT_CONSTEXPR_DECL const std::size_t range_length_limit = + FMT_RANGE_OUTPUT_LENGTH_LIMIT; // output only up to N items from the range. + Char prefix; + Char delimiter; + Char postfix; + formatting_range() : prefix('{'), delimiter(','), postfix('}') {} + static FMT_CONSTEXPR_DECL const bool add_delimiter_spaces = true; + static FMT_CONSTEXPR_DECL const bool add_prepostfix_space = false; +}; + +template <typename Char, typename Enable = void> +struct formatting_tuple : formatting_base<Char> { + Char prefix; + Char delimiter; + Char postfix; + formatting_tuple() : prefix('('), delimiter(','), postfix(')') {} + static FMT_CONSTEXPR_DECL const bool add_delimiter_spaces = true; + static FMT_CONSTEXPR_DECL const bool add_prepostfix_space = false; +}; + +namespace internal { + +template <typename RangeT, typename OutputIterator> +void copy(const RangeT &range, OutputIterator out) { + for (auto it = range.begin(), end = range.end(); it != end; ++it) + *out++ = *it; +} + +template <typename OutputIterator> +void copy(const char *str, OutputIterator out) { + const char *p_curr = str; + while (*p_curr) { + *out++ = *p_curr++; + } +} + +template <typename OutputIterator> +void copy(char ch, OutputIterator out) { + *out++ = ch; +} + +/// Return true value if T has std::string interface, like std::string_view. +template <typename T> +class is_like_std_string { + template <typename U> + static auto check(U *p) -> + decltype(p->find('a'), p->length(), p->data(), int()); + template <typename> + static void check(...); + + public: + static FMT_CONSTEXPR_DECL const bool value = + !std::is_void<decltype(check<T>(FMT_NULL))>::value; +}; + +template <typename... Ts> +struct conditional_helper {}; + +template <typename T, typename _ = void> +struct is_range_ : std::false_type {}; + +#if !FMT_MSC_VER || FMT_MSC_VER > 1800 +template <typename T> +struct is_range_<T, typename std::conditional< + false, + conditional_helper<decltype(internal::declval<T>().begin()), + decltype(internal::declval<T>().end())>, + void>::type> : std::true_type {}; +#endif + +/// tuple_size and tuple_element check. +template <typename T> +class is_tuple_like_ { + template <typename U> + static auto check(U *p) -> + decltype(std::tuple_size<U>::value, + internal::declval<typename std::tuple_element<0, U>::type>(), int()); + template <typename> + static void check(...); + + public: + static FMT_CONSTEXPR_DECL const bool value = + !std::is_void<decltype(check<T>(FMT_NULL))>::value; +}; + +// Check for integer_sequence +#if defined(__cpp_lib_integer_sequence) || FMT_MSC_VER >= 1900 +template <typename T, T... N> +using integer_sequence = std::integer_sequence<T, N...>; +template <std::size_t... N> +using index_sequence = std::index_sequence<N...>; +template <std::size_t N> +using make_index_sequence = std::make_index_sequence<N>; +#else +template <typename T, T... N> +struct integer_sequence { + typedef T value_type; + + static FMT_CONSTEXPR std::size_t size() { + return sizeof...(N); + } +}; + +template <std::size_t... N> +using index_sequence = integer_sequence<std::size_t, N...>; + +template <typename T, std::size_t N, T... Ns> +struct make_integer_sequence : make_integer_sequence<T, N - 1, N - 1, Ns...> {}; +template <typename T, T... Ns> +struct make_integer_sequence<T, 0, Ns...> : integer_sequence<T, Ns...> {}; + +template <std::size_t N> +using make_index_sequence = make_integer_sequence<std::size_t, N>; +#endif + +template <class Tuple, class F, size_t... Is> +void for_each(index_sequence<Is...>, Tuple &&tup, F &&f) FMT_NOEXCEPT { + using std::get; + // using free function get<I>(T) now. + const int _[] = {0, ((void)f(get<Is>(tup)), 0)...}; + (void)_; // blocks warnings +} + +template <class T> +FMT_CONSTEXPR make_index_sequence<std::tuple_size<T>::value> +get_indexes(T const &) { return {}; } + +template <class Tuple, class F> +void for_each(Tuple &&tup, F &&f) { + const auto indexes = get_indexes(tup); + for_each(indexes, std::forward<Tuple>(tup), std::forward<F>(f)); +} + +template<typename Arg> +FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const Arg&, + typename std::enable_if< + !is_like_std_string<typename std::decay<Arg>::type>::value>::type* = nullptr) { + return add_space ? " {}" : "{}"; +} + +template<typename Arg> +FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const Arg&, + typename std::enable_if< + is_like_std_string<typename std::decay<Arg>::type>::value>::type* = nullptr) { + return add_space ? " \"{}\"" : "\"{}\""; +} + +FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const char*) { + return add_space ? " \"{}\"" : "\"{}\""; +} +FMT_CONSTEXPR const wchar_t* format_str_quoted(bool add_space, const wchar_t*) { + return add_space ? L" \"{}\"" : L"\"{}\""; +} + +FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const char) { + return add_space ? " '{}'" : "'{}'"; +} +FMT_CONSTEXPR const wchar_t* format_str_quoted(bool add_space, const wchar_t) { + return add_space ? L" '{}'" : L"'{}'"; +} + +} // namespace internal + +template <typename T> +struct is_tuple_like { + static FMT_CONSTEXPR_DECL const bool value = + internal::is_tuple_like_<T>::value && !internal::is_range_<T>::value; +}; + +template <typename TupleT, typename Char> +struct formatter<TupleT, Char, + typename std::enable_if<fmt::is_tuple_like<TupleT>::value>::type> { +private: + // C++11 generic lambda for format() + template <typename FormatContext> + struct format_each { + template <typename T> + void operator()(const T& v) { + if (i > 0) { + if (formatting.add_prepostfix_space) { + *out++ = ' '; + } + internal::copy(formatting.delimiter, out); + } + format_to(out, + internal::format_str_quoted( + (formatting.add_delimiter_spaces && i > 0), v), + v); + ++i; + } + + formatting_tuple<Char>& formatting; + std::size_t& i; + typename std::add_lvalue_reference<decltype(std::declval<FormatContext>().out())>::type out; + }; + +public: + formatting_tuple<Char> formatting; + + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin()) { + return formatting.parse(ctx); + } + + template <typename FormatContext = format_context> + auto format(const TupleT &values, FormatContext &ctx) -> decltype(ctx.out()) { + auto out = ctx.out(); + std::size_t i = 0; + internal::copy(formatting.prefix, out); + + internal::for_each(values, format_each<FormatContext>{formatting, i, out}); + if (formatting.add_prepostfix_space) { + *out++ = ' '; + } + internal::copy(formatting.postfix, out); + + return ctx.out(); + } +}; + +template <typename T> +struct is_range { + static FMT_CONSTEXPR_DECL const bool value = + internal::is_range_<T>::value && !internal::is_like_std_string<T>::value; +}; + +template <typename RangeT, typename Char> +struct formatter<RangeT, Char, + typename std::enable_if<fmt::is_range<RangeT>::value>::type> { + + formatting_range<Char> formatting; + + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin()) { + return formatting.parse(ctx); + } + + template <typename FormatContext> + typename FormatContext::iterator format( + const RangeT &values, FormatContext &ctx) { + auto out = ctx.out(); + internal::copy(formatting.prefix, out); + std::size_t i = 0; + for (auto it = values.begin(), end = values.end(); it != end; ++it) { + if (i > 0) { + if (formatting.add_prepostfix_space) { + *out++ = ' '; + } + internal::copy(formatting.delimiter, out); + } + format_to(out, + internal::format_str_quoted( + (formatting.add_delimiter_spaces && i > 0), *it), + *it); + if (++i > formatting.range_length_limit) { + format_to(out, " ... <other elements>"); + break; + } + } + if (formatting.add_prepostfix_space) { + *out++ = ' '; + } + internal::copy(formatting.postfix, out); + return ctx.out(); + } +}; + +FMT_END_NAMESPACE + +#endif // FMT_RANGES_H_ +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fmt/include/fmt/time.h Fri Jul 13 13:15:12 2018 +0200 @@ -0,0 +1,152 @@ +// Formatting library for C++ - time formatting +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_TIME_H_ +#define FMT_TIME_H_ + +#include "format.h" +#include <ctime> + +FMT_BEGIN_NAMESPACE + +namespace internal{ +inline null<> localtime_r(...) { return null<>(); } +inline null<> localtime_s(...) { return null<>(); } +inline null<> gmtime_r(...) { return null<>(); } +inline null<> gmtime_s(...) { return null<>(); } +} + +// Thread-safe replacement for std::localtime +inline std::tm localtime(std::time_t time) { + struct dispatcher { + std::time_t time_; + std::tm tm_; + + dispatcher(std::time_t t): time_(t) {} + + bool run() { + using namespace fmt::internal; + return handle(localtime_r(&time_, &tm_)); + } + + bool handle(std::tm *tm) { return tm != FMT_NULL; } + + bool handle(internal::null<>) { + using namespace fmt::internal; + return fallback(localtime_s(&tm_, &time_)); + } + + bool fallback(int res) { return res == 0; } + + bool fallback(internal::null<>) { + using namespace fmt::internal; + std::tm *tm = std::localtime(&time_); + if (tm) tm_ = *tm; + return tm != FMT_NULL; + } + }; + dispatcher lt(time); + if (lt.run()) + return lt.tm_; + // Too big time values may be unsupported. + FMT_THROW(format_error("time_t value out of range")); +} + +// Thread-safe replacement for std::gmtime +inline std::tm gmtime(std::time_t time) { + struct dispatcher { + std::time_t time_; + std::tm tm_; + + dispatcher(std::time_t t): time_(t) {} + + bool run() { + using namespace fmt::internal; + return handle(gmtime_r(&time_, &tm_)); + } + + bool handle(std::tm *tm) { return tm != FMT_NULL; } + + bool handle(internal::null<>) { + using namespace fmt::internal; + return fallback(gmtime_s(&tm_, &time_)); + } + + bool fallback(int res) { return res == 0; } + + bool fallback(internal::null<>) { + std::tm *tm = std::gmtime(&time_); + if (tm) tm_ = *tm; + return tm != FMT_NULL; + } + }; + dispatcher gt(time); + if (gt.run()) + return gt.tm_; + // Too big time values may be unsupported. + FMT_THROW(format_error("time_t value out of range")); +} + +namespace internal { +inline std::size_t strftime(char *str, std::size_t count, const char *format, + const std::tm *time) { + return std::strftime(str, count, format, time); +} + +inline std::size_t strftime(wchar_t *str, std::size_t count, + const wchar_t *format, const std::tm *time) { + return std::wcsftime(str, count, format, time); +} +} + +template <typename Char> +struct formatter<std::tm, Char> { + template <typename ParseContext> + auto parse(ParseContext &ctx) -> decltype(ctx.begin()) { + auto it = internal::null_terminating_iterator<Char>(ctx); + if (*it == ':') + ++it; + auto end = it; + while (*end && *end != '}') + ++end; + tm_format.reserve(end - it + 1); + using internal::pointer_from; + tm_format.append(pointer_from(it), pointer_from(end)); + tm_format.push_back('\0'); + return pointer_from(end); + } + + template <typename FormatContext> + auto format(const std::tm &tm, FormatContext &ctx) -> decltype(ctx.out()) { + internal::basic_buffer<Char> &buf = internal::get_container(ctx.out()); + std::size_t start = buf.size(); + for (;;) { + std::size_t size = buf.capacity() - start; + std::size_t count = + internal::strftime(&buf[start], size, &tm_format[0], &tm); + if (count != 0) { + buf.resize(start + count); + break; + } + if (size >= tm_format.size() * 256) { + // If the buffer is 256 times larger than the format string, assume + // that `strftime` gives an empty result. There doesn't seem to be a + // better way to distinguish the two cases: + // https://github.com/fmtlib/fmt/issues/367 + break; + } + const std::size_t MIN_GROWTH = 10; + buf.reserve(buf.capacity() + (size > MIN_GROWTH ? size : MIN_GROWTH)); + } + return ctx.out(); + } + + basic_memory_buffer<Char> tm_format; +}; +FMT_END_NAMESPACE + +#endif // FMT_TIME_H_
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fmt/src/format.cc Fri Jul 13 13:15:12 2018 +0200 @@ -0,0 +1,52 @@ +// Formatting library for C++ +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#include "fmt/format-inl.h" + +FMT_BEGIN_NAMESPACE +namespace internal { +// Force linking of inline functions into the library. +std::string (*vformat_ref)(string_view, format_args) = vformat; +std::wstring (*vformat_wref)(wstring_view, wformat_args) = vformat; +} + +template struct internal::basic_data<void>; + +// Explicit instantiations for char. + +template FMT_API char internal::thousands_sep(locale_provider *lp); + +template void basic_fixed_buffer<char>::grow(std::size_t); + +template void internal::arg_map<format_context>::init( + const basic_format_args<format_context> &args); + +template FMT_API int internal::char_traits<char>::format_float( + char *buffer, std::size_t size, const char *format, int precision, + double value); + +template FMT_API int internal::char_traits<char>::format_float( + char *buffer, std::size_t size, const char *format, int precision, + long double value); + +// Explicit instantiations for wchar_t. + +template FMT_API wchar_t internal::thousands_sep(locale_provider *lp); + +template void basic_fixed_buffer<wchar_t>::grow(std::size_t); + +template void internal::arg_map<wformat_context>::init( + const basic_format_args<wformat_context> &args); + +template FMT_API int internal::char_traits<wchar_t>::format_float( + wchar_t *buffer, std::size_t size, const wchar_t *format, + int precision, double value); + +template FMT_API int internal::char_traits<wchar_t>::format_float( + wchar_t *buffer, std::size_t size, const wchar_t *format, + int precision, long double value); +FMT_END_NAMESPACE
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fmt/src/posix.cc Fri Jul 13 13:15:12 2018 +0200 @@ -0,0 +1,244 @@ +// A C++ interface to POSIX functions. +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +// Disable bogus MSVC warnings. +#if !defined(_CRT_SECURE_NO_WARNINGS) && defined(_MSC_VER) +# define _CRT_SECURE_NO_WARNINGS +#endif + +#include "fmt/posix.h" + +#include <limits.h> +#include <sys/types.h> +#include <sys/stat.h> + +#ifndef _WIN32 +# include <unistd.h> +#else +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include <windows.h> +# include <io.h> + +# define O_CREAT _O_CREAT +# define O_TRUNC _O_TRUNC + +# ifndef S_IRUSR +# define S_IRUSR _S_IREAD +# endif + +# ifndef S_IWUSR +# define S_IWUSR _S_IWRITE +# endif + +# ifdef __MINGW32__ +# define _SH_DENYNO 0x40 +# endif + +#endif // _WIN32 + +#ifdef fileno +# undef fileno +#endif + +namespace { +#ifdef _WIN32 +// Return type of read and write functions. +typedef int RWResult; + +// On Windows the count argument to read and write is unsigned, so convert +// it from size_t preventing integer overflow. +inline unsigned convert_rwcount(std::size_t count) { + return count <= UINT_MAX ? static_cast<unsigned>(count) : UINT_MAX; +} +#else +// Return type of read and write functions. +typedef ssize_t RWResult; + +inline std::size_t convert_rwcount(std::size_t count) { return count; } +#endif +} + +FMT_BEGIN_NAMESPACE + +buffered_file::~buffered_file() FMT_NOEXCEPT { + if (file_ && FMT_SYSTEM(fclose(file_)) != 0) + report_system_error(errno, "cannot close file"); +} + +buffered_file::buffered_file(cstring_view filename, cstring_view mode) { + FMT_RETRY_VAL(file_, + FMT_SYSTEM(fopen(filename.c_str(), mode.c_str())), FMT_NULL); + if (!file_) + FMT_THROW(system_error(errno, "cannot open file {}", filename.c_str())); +} + +void buffered_file::close() { + if (!file_) + return; + int result = FMT_SYSTEM(fclose(file_)); + file_ = FMT_NULL; + if (result != 0) + FMT_THROW(system_error(errno, "cannot close file")); +} + +// A macro used to prevent expansion of fileno on broken versions of MinGW. +#define FMT_ARGS + +int buffered_file::fileno() const { + int fd = FMT_POSIX_CALL(fileno FMT_ARGS(file_)); + if (fd == -1) + FMT_THROW(system_error(errno, "cannot get file descriptor")); + return fd; +} + +file::file(cstring_view path, int oflag) { + int mode = S_IRUSR | S_IWUSR; +#if defined(_WIN32) && !defined(__MINGW32__) + fd_ = -1; + FMT_POSIX_CALL(sopen_s(&fd_, path.c_str(), oflag, _SH_DENYNO, mode)); +#else + FMT_RETRY(fd_, FMT_POSIX_CALL(open(path.c_str(), oflag, mode))); +#endif + if (fd_ == -1) + FMT_THROW(system_error(errno, "cannot open file {}", path.c_str())); +} + +file::~file() FMT_NOEXCEPT { + // Don't retry close in case of EINTR! + // See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html + if (fd_ != -1 && FMT_POSIX_CALL(close(fd_)) != 0) + report_system_error(errno, "cannot close file"); +} + +void file::close() { + if (fd_ == -1) + return; + // Don't retry close in case of EINTR! + // See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html + int result = FMT_POSIX_CALL(close(fd_)); + fd_ = -1; + if (result != 0) + FMT_THROW(system_error(errno, "cannot close file")); +} + +long long file::size() const { +#ifdef _WIN32 + // Use GetFileSize instead of GetFileSizeEx for the case when _WIN32_WINNT + // is less than 0x0500 as is the case with some default MinGW builds. + // Both functions support large file sizes. + DWORD size_upper = 0; + HANDLE handle = reinterpret_cast<HANDLE>(_get_osfhandle(fd_)); + DWORD size_lower = FMT_SYSTEM(GetFileSize(handle, &size_upper)); + if (size_lower == INVALID_FILE_SIZE) { + DWORD error = GetLastError(); + if (error != NO_ERROR) + FMT_THROW(windows_error(GetLastError(), "cannot get file size")); + } + unsigned long long long_size = size_upper; + return (long_size << sizeof(DWORD) * CHAR_BIT) | size_lower; +#else + typedef struct stat Stat; + Stat file_stat = Stat(); + if (FMT_POSIX_CALL(fstat(fd_, &file_stat)) == -1) + FMT_THROW(system_error(errno, "cannot get file attributes")); + static_assert(sizeof(long long) >= sizeof(file_stat.st_size), + "return type of file::size is not large enough"); + return file_stat.st_size; +#endif +} + +std::size_t file::read(void *buffer, std::size_t count) { + RWResult result = 0; + FMT_RETRY(result, FMT_POSIX_CALL(read(fd_, buffer, convert_rwcount(count)))); + if (result < 0) + FMT_THROW(system_error(errno, "cannot read from file")); + return internal::to_unsigned(result); +} + +std::size_t file::write(const void *buffer, std::size_t count) { + RWResult result = 0; + FMT_RETRY(result, FMT_POSIX_CALL(write(fd_, buffer, convert_rwcount(count)))); + if (result < 0) + FMT_THROW(system_error(errno, "cannot write to file")); + return internal::to_unsigned(result); +} + +file file::dup(int fd) { + // Don't retry as dup doesn't return EINTR. + // http://pubs.opengroup.org/onlinepubs/009695399/functions/dup.html + int new_fd = FMT_POSIX_CALL(dup(fd)); + if (new_fd == -1) + FMT_THROW(system_error(errno, "cannot duplicate file descriptor {}", fd)); + return file(new_fd); +} + +void file::dup2(int fd) { + int result = 0; + FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd))); + if (result == -1) { + FMT_THROW(system_error(errno, + "cannot duplicate file descriptor {} to {}", fd_, fd)); + } +} + +void file::dup2(int fd, error_code &ec) FMT_NOEXCEPT { + int result = 0; + FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd))); + if (result == -1) + ec = error_code(errno); +} + +void file::pipe(file &read_end, file &write_end) { + // Close the descriptors first to make sure that assignments don't throw + // and there are no leaks. + read_end.close(); + write_end.close(); + int fds[2] = {}; +#ifdef _WIN32 + // Make the default pipe capacity same as on Linux 2.6.11+. + enum { DEFAULT_CAPACITY = 65536 }; + int result = FMT_POSIX_CALL(pipe(fds, DEFAULT_CAPACITY, _O_BINARY)); +#else + // Don't retry as the pipe function doesn't return EINTR. + // http://pubs.opengroup.org/onlinepubs/009696799/functions/pipe.html + int result = FMT_POSIX_CALL(pipe(fds)); +#endif + if (result != 0) + FMT_THROW(system_error(errno, "cannot create pipe")); + // The following assignments don't throw because read_fd and write_fd + // are closed. + read_end = file(fds[0]); + write_end = file(fds[1]); +} + +buffered_file file::fdopen(const char *mode) { + // Don't retry as fdopen doesn't return EINTR. + FILE *f = FMT_POSIX_CALL(fdopen(fd_, mode)); + if (!f) + FMT_THROW(system_error(errno, + "cannot associate stream with file descriptor")); + buffered_file bf(f); + fd_ = -1; + return bf; +} + +long getpagesize() { +#ifdef _WIN32 + SYSTEM_INFO si; + GetSystemInfo(&si); + return si.dwPageSize; +#else + long size = FMT_POSIX_CALL(sysconf(_SC_PAGESIZE)); + if (size < 0) + FMT_THROW(system_error(errno, "cannot get memory page size")); + return size; +#endif +} +FMT_END_NAMESPACE +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fmt/support/cmake/cxx14.cmake Fri Jul 13 13:15:12 2018 +0200 @@ -0,0 +1,97 @@ +# C++14 feature support detection + +include(CheckCXXSourceCompiles) +include(CheckCXXCompilerFlag) + +if (NOT CMAKE_CXX_STANDARD) + set(CMAKE_CXX_STANDARD 11) +endif() +message(STATUS "CXX_STANDARD: ${CMAKE_CXX_STANDARD}") + +if (CMAKE_CXX_STANDARD EQUAL 20) + check_cxx_compiler_flag(-std=c++20 has_std_20_flag) + check_cxx_compiler_flag(-std=c++2a has_std_2a_flag) + + if (has_std_20_flag) + set(CXX_STANDARD_FLAG -std=c++20) + elseif (has_std_2a_flag) + set(CXX_STANDARD_FLAG -std=c++2a) + endif () +elseif (CMAKE_CXX_STANDARD EQUAL 17) + check_cxx_compiler_flag(-std=c++17 has_std_17_flag) + check_cxx_compiler_flag(-std=c++1z has_std_1z_flag) + + if (has_std_17_flag) + set(CXX_STANDARD_FLAG -std=c++17) + elseif (has_std_1z_flag) + set(CXX_STANDARD_FLAG -std=c++1z) + endif () +elseif (CMAKE_CXX_STANDARD EQUAL 14) + check_cxx_compiler_flag(-std=c++14 has_std_14_flag) + check_cxx_compiler_flag(-std=c++1y has_std_1y_flag) + + if (has_std_14_flag) + set(CXX_STANDARD_FLAG -std=c++14) + elseif (has_std_1y_flag) + set(CXX_STANDARD_FLAG -std=c++1y) + endif () +elseif (CMAKE_CXX_STANDARD EQUAL 11) + check_cxx_compiler_flag(-std=c++11 has_std_11_flag) + check_cxx_compiler_flag(-std=c++0x has_std_0x_flag) + + if (has_std_11_flag) + set(CXX_STANDARD_FLAG -std=c++11) + elseif (has_std_0x_flag) + set(CXX_STANDARD_FLAG -std=c++0x) + endif () +endif () + +set(CMAKE_REQUIRED_FLAGS ${CXX_STANDARD_FLAG}) + +# Check if variadic templates are working and not affected by GCC bug 39653: +# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39653 +check_cxx_source_compiles(" + template <class T, class ...Types> + struct S { typedef typename S<Types...>::type type; }; + int main() {}" SUPPORTS_VARIADIC_TEMPLATES) +if (NOT SUPPORTS_VARIADIC_TEMPLATES) + set (SUPPORTS_VARIADIC_TEMPLATES OFF) +endif () + +# Check if initializer lists are supported. +check_cxx_source_compiles(" + #include <initializer_list> + int main() {}" SUPPORTS_INITIALIZER_LIST) +if (NOT SUPPORTS_INITIALIZER_LIST) + set (SUPPORTS_INITIALIZER_LIST OFF) +endif () + +# Check if enum bases are available +check_cxx_source_compiles(" + enum C : char {A}; + int main() {}" + SUPPORTS_ENUM_BASE) +if (NOT SUPPORTS_ENUM_BASE) + set (SUPPORTS_ENUM_BASE OFF) +endif () + +# Check if type traits are available +check_cxx_source_compiles(" + #include <type_traits> + class C { void operator=(const C&); }; + int main() { static_assert(!std::is_copy_assignable<C>::value, \"\"); }" + SUPPORTS_TYPE_TRAITS) +if (NOT SUPPORTS_TYPE_TRAITS) + set (SUPPORTS_TYPE_TRAITS OFF) +endif () + +# Check if user-defined literals are available +check_cxx_source_compiles(" + void operator\"\" _udl(long double); + int main() {}" + SUPPORTS_USER_DEFINED_LITERALS) +if (NOT SUPPORTS_USER_DEFINED_LITERALS) + set (SUPPORTS_USER_DEFINED_LITERALS OFF) +endif () + +set(CMAKE_REQUIRED_FLAGS )