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annotate extern/vera/src/structures/SourceLines.cpp @ 548:a7c0eb100760

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CMake: import vera++ 1.3.0, closes #729
author David Demelier <markand@malikania.fr>
date Wed, 22 Nov 2017 20:10:03 +0100
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548
a7c0eb100760 CMake: import vera++ 1.3.0, closes #729
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1 //
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2 // Copyright (C) 2006-2007 Maciej Sobczak
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3 // Distributed under the Boost Software License, Version 1.0.
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4 // (See accompanying file LICENSE_1_0.txt or copy at
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5 // http://www.boost.org/LICENSE_1_0.txt)
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6 //
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7
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8 #include "SourceLines.h"
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9 #include "Tokens.h"
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10 #include "../plugins/Reports.h"
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11 #include <vector>
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12 #include <map>
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13 #include <fstream>
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14 #include <sstream>
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15 #include <cstring>
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16 #include <cerrno>
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17
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18
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19 namespace // unnamed
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20 {
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21
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22 typedef std::map<Vera::Structures::SourceFiles::FileName,
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23 Vera::Structures::SourceLines::LineCollection> SourceFileCollection;
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24
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25 SourceFileCollection sources_;
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26
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27 } // unnamed namespace
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28
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29
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30 namespace Vera
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31 {
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32 namespace Structures
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33 {
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34
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35 const SourceLines::LineCollection & SourceLines::getAllLines(const SourceFiles::FileName & name)
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36 {
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37 const SourceFileCollection::const_iterator it = sources_.find(name);
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38 if (it != sources_.end())
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39 {
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40 return it->second;
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41 }
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42 else
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43 {
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44 // lazy load of the source file
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45 loadFile(name);
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46 return sources_[name];
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47 }
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48 }
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49
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50 void SourceLines::loadFile(const SourceFiles::FileName & name)
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51 {
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52 if (name == "-")
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53 {
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54 SourceLines::loadFile(std::cin, name);
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55 }
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56 else
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57 {
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58 std::ifstream file(name.c_str());
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59 if (file.is_open() == false)
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60 {
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61 std::ostringstream ss;
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62 ss << "Cannot open source file " << name << ": "
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63 << strerror(errno);
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64 throw SourceFileError(ss.str());
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65 }
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66 SourceLines::loadFile(file, name);
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67 if (file.bad())
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68 {
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69 throw std::runtime_error(
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70 "Cannot read from " + name + ": " + strerror(errno));
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71 }
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72 }
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73 }
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74
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75 void SourceLines::loadFile(std::istream & file, const SourceFiles::FileName & name)
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76 {
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77 LineCollection & lines = sources_[name];
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78
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79 std::string line;
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80 Tokens::FileContent fullSource;
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81 while (getline(file, line))
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82 {
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83 lines.push_back(line);
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84 fullSource += line;
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85
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86 // built-in rule
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87 if (file.eof())
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88 {
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89 // Plugins::Reports::internal(name, static_cast<int>(lines.size()),
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90 // "no newline at end of file");
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91 }
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92 else
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93 {
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94 fullSource += '\n';
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95 }
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96 }
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97
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98 Tokens::parse(name, fullSource);
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99 }
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100
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101 int SourceLines::getLineCount(const SourceFiles::FileName & name)
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102 {
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103 return static_cast<int>(getAllLines(name).size());
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104 }
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105
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106 const std::string & SourceLines::getLine(const SourceFiles::FileName & name, int lineNumber)
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107 {
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108 const LineCollection & lines = getAllLines(name);
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109 if (lineNumber < 1 || lineNumber > static_cast<int>(lines.size()))
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110 {
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111 std::cerr << "Requested wrong line number: " << lineNumber << '\n';
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112 std::cerr << "lines.size in " << name << " is " << static_cast<int>(lines.size()) << '\n';
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113 throw SourceFileError("requested line number is out of range");
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114 }
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115
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116 return lines[lineNumber - 1];
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117 }
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118
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119 }
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120 }