Mercurial > imgup
annotate util.c @ 25:b74c1f165e51
misc: update copyright years
| author | David Demelier <markand@malikania.fr> |
|---|---|
| date | Sun, 02 Jan 2022 10:24:45 +0100 |
| parents | f19f5f9fee56 |
| children | 222d013399cf |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * util.c -- various utilities | |
| 3 * | |
|
25
b74c1f165e51
misc: update copyright years
David Demelier <markand@malikania.fr>
parents:
23
diff
changeset
|
4 * Copyright (c) 2020-2022 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 | |
| 19 #include <assert.h> | |
| 20 #include <errno.h> | |
| 21 #include <ctype.h> | |
| 22 #include <limits.h> | |
| 23 #include <stdarg.h> | |
| 24 #include <stdio.h> | |
| 25 #include <stdlib.h> | |
| 26 #include <stdnoreturn.h> | |
| 27 #include <string.h> | |
| 28 #include <time.h> | |
| 29 | |
| 30 #include "image.h" | |
| 31 #include "config.h" | |
| 32 #include "util.h" | |
| 33 | |
| 34 noreturn void | |
| 35 die(const char *fmt, ...) | |
| 36 { | |
| 37 assert(fmt); | |
| 38 | |
| 39 va_list ap; | |
| 40 | |
| 41 va_start(ap, fmt); | |
| 42 vfprintf(stderr, fmt, ap); | |
| 43 va_end(ap); | |
| 44 | |
| 45 exit(1); | |
| 46 } | |
| 47 | |
| 48 char * | |
| 49 estrdup(const char *str) | |
| 50 { | |
| 51 assert(str); | |
| 52 | |
| 53 char *ret; | |
| 54 size_t length = strlen(str); | |
| 55 | |
| 56 if (!(ret = calloc(1, length + 1))) | |
| 57 die(strerror(errno)); | |
| 58 | |
| 59 return strcpy(ret, str); | |
| 60 } | |
| 61 | |
| 62 void * | |
| 63 ememdup(const void *src, size_t length) | |
| 64 { | |
| 65 assert(src); | |
| 66 assert(length > 0); | |
| 67 | |
| 68 void *ptr; | |
| 69 | |
| 70 if (!(ptr = malloc(length))) | |
| 71 die(strerror(errno)); | |
| 72 | |
| 73 return memcpy(ptr, src, length); | |
| 74 } | |
| 75 | |
| 76 const char * | |
| 77 bprintf(const char *fmt, ...) | |
| 78 { | |
| 79 assert(fmt); | |
| 80 | |
| 81 static char buf[BUFSIZ]; | |
| 82 va_list ap; | |
| 83 | |
| 84 va_start(ap, fmt); | |
| 85 vsnprintf(buf, sizeof (buf), fmt, ap); | |
| 86 va_end(ap); | |
| 87 | |
| 88 return buf; | |
| 89 } | |
| 90 | |
| 91 const char * | |
| 92 bstrftime(const char *fmt, const struct tm *tm) | |
| 93 { | |
| 94 assert(fmt); | |
| 95 assert(tm); | |
| 96 | |
| 97 static char buf[BUFSIZ]; | |
| 98 | |
| 99 strftime(buf, sizeof (buf), fmt, tm); | |
| 100 | |
| 101 return buf; | |
| 102 } | |
| 103 | |
| 104 const char * | |
| 105 path(const char *filename) | |
| 106 { | |
| 107 assert(filename); | |
| 108 | |
| 109 /* Build path to the template file. */ | |
| 110 static char path[PATH_MAX]; | |
| 111 | |
| 112 snprintf(path, sizeof (path), "%s/%s", config.themedir, filename); | |
| 113 | |
| 114 return path; | |
| 115 } | |
| 116 | |
| 117 void | |
| 118 replace(char **dst, const char *s) | |
| 119 { | |
| 120 assert(dst); | |
| 121 assert(s); | |
| 122 | |
| 123 /* Trim leading spaces. */ | |
| 124 while (*s && isspace(*s)) | |
| 125 s++; | |
| 126 | |
| 127 if (*s) { | |
| 128 free(*dst); | |
| 129 *dst = estrdup(s); | |
| 130 } | |
| 131 } | |
| 132 | |
| 133 const char * | |
| 134 ttl(time_t timestamp, long long int duration) | |
| 135 { | |
| 136 const time_t now = time(NULL); | |
| 137 const long long int left = duration - difftime(now, timestamp); | |
| 138 | |
| 139 if (left < IMAGE_DURATION_HOUR) | |
| 140 return bprintf("%lld minute(s)", left / 60); | |
| 141 if (left < IMAGE_DURATION_DAY) | |
| 142 return bprintf("%lld hour(s)", left / 3600); | |
| 143 | |
| 144 /* Other in days. */ | |
| 145 return bprintf("%lld day(s)", left / 86400); | |
| 146 } |