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annotate libsci/util.c @ 73:b0d1166de7d3
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| author | David Demelier <markand@malikania.fr> |
|---|---|
| date | Tue, 24 Jan 2023 10:51:48 +0100 |
| parents | 67470b67e460 |
| children | 71cd8447e3a4 |
| rev | line source |
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| 0 | 1 /* |
| 2 * util.c -- miscellaneous utilities | |
| 3 * | |
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4 * Copyright (c) 2021-2022 David Demelier <markand@malikania.fr> |
| 0 | 5 * |
| 6 * Permission to use, copy, modify, and/or distribute this software for any | |
| 7 * purpose with or without fee is hereby granted, provided that the above | |
| 8 * copyright notice and this permission notice appear in all copies. | |
| 9 * | |
| 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
| 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
| 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
| 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
| 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 17 */ | |
| 18 | |
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19 #include <sys/stat.h> |
| 0 | 20 #include <assert.h> |
| 30 | 21 #include <errno.h> |
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22 #include <fcntl.h> |
| 0 | 23 #include <libgen.h> |
| 24 #include <limits.h> | |
| 25 #include <stdarg.h> | |
| 26 #include <stdio.h> | |
| 27 #include <stdlib.h> | |
| 28 #include <string.h> | |
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29 #include <unistd.h> |
| 0 | 30 |
| 31 #include "util.h" | |
| 32 | |
| 33 void * | |
| 34 util_calloc(size_t n, size_t size) | |
| 35 { | |
| 36 void *ret; | |
| 37 | |
| 38 if (!(ret = calloc(n, size))) | |
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39 util_die("abort: calloc: %s\n", strerror(errno)); |
| 0 | 40 |
| 41 return ret; | |
| 42 } | |
| 43 | |
| 44 char * | |
| 45 util_strdup(const char *src) | |
| 46 { | |
| 47 char *ret; | |
| 48 | |
| 49 if (!(ret = strdup(src))) | |
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50 util_die("abort: strdup: %s\n", strerror(errno)); |
| 0 | 51 |
| 52 return ret; | |
| 53 } | |
| 54 | |
| 55 char * | |
| 56 util_basename(const char *str) | |
| 57 { | |
| 58 static char ret[PATH_MAX]; | |
| 59 char tmp[PATH_MAX]; | |
| 60 | |
| 20 | 61 util_strlcpy(tmp, str, sizeof (tmp)); |
| 62 util_strlcpy(ret, basename(tmp), sizeof (ret)); | |
| 0 | 63 |
| 64 return ret; | |
| 65 } | |
| 66 | |
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67 FILE * |
| 30 | 68 util_open_memstream(char **out, size_t *outsz) |
| 0 | 69 { |
| 30 | 70 assert(out); |
| 71 assert(outsz); | |
| 0 | 72 |
| 30 | 73 FILE *fp; |
| 0 | 74 |
| 30 | 75 if (!(fp = open_memstream(out, outsz))) |
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76 util_die("abort: open_memstream: %s\n", strerror(errno)); |
| 0 | 77 |
| 30 | 78 return fp; |
| 0 | 79 } |
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80 |
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81 char * |
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82 util_read(const char *path) |
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83 { |
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84 int fd; |
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85 struct stat st; |
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86 char *ret; |
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87 |
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88 if ((fd = open(path, O_RDONLY)) < 0) |
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89 return NULL; |
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90 if (fstat(fd, &st) < 0) |
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91 return close(fd), NULL; |
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92 |
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93 ret = util_calloc(1, st.st_size + 1); |
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94 |
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95 if (read(fd, ret, st.st_size) != st.st_size) { |
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96 free(ret); |
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97 ret = NULL; |
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98 } |
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99 |
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100 close(fd); |
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101 |
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102 return ret; |
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103 } |
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104 |
| 19 | 105 void |
| 106 util_die(const char *fmt, ...) | |
| 107 { | |
| 108 assert(fmt); | |
| 109 | |
| 110 va_list ap; | |
| 111 | |
| 112 va_start(ap, fmt); | |
| 113 vfprintf(stderr, fmt, ap); | |
| 114 va_end(ap); | |
| 115 exit(1); | |
| 116 } | |
| 30 | 117 |
| 118 json_t * | |
| 119 util_json_pack(const char *fmt, ...) | |
| 120 { | |
| 121 va_list ap; | |
| 122 json_t *doc; | |
| 123 json_error_t err; | |
| 124 | |
| 125 va_start(ap, fmt); | |
| 126 doc = json_vpack_ex(&err, 0, fmt, ap); | |
| 127 va_end(ap); | |
| 128 | |
| 129 if (!doc) | |
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130 util_die("abort: json_vpack_ex: %s\n", err.text); |
| 30 | 131 |
| 132 return doc; | |
| 133 } | |
| 134 | |
| 135 char * | |
| 136 util_json_dump(const json_t *json) | |
| 137 { | |
| 138 assert(json); | |
| 139 | |
| 140 char *ret; | |
| 141 | |
| 142 if (!(ret = json_dumps(json, JSON_COMPACT))) | |
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143 util_die("abort: json_dump: %s\n", strerror(ENOMEM)); |
| 30 | 144 |
| 145 return ret; | |
| 146 } | |
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147 |
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148 int |
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149 util_getopt(int argc, char * const *argv, const char *optstring) |
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150 { |
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151 int ch; |
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152 |
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153 opterr = 0; |
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154 |
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155 switch ((ch = getopt(argc, argv, optstring))) { |
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156 case '?': |
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157 util_die("abort: invalid option: %c\n", ch); |
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158 break; |
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159 case ':': |
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160 util_die("abort: missing value for option %c\n", ch); |
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161 break; |
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162 default: |
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163 break; |
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164 } |
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165 |
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166 return ch; |
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167 } |