1 /* Id */ 2 3 /* 4 * Copyright (c) 2004 Nicholas Marriott <nicm@users.sourceforge.net> 5 * 6 * Permission to use, copy, modify, and 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 MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/param.h> 20 21 #include <errno.h> 22 #include <libgen.h> 23 #include <stdlib.h> 24 #include <string.h> 25 26 #include "tmux.h" 27 28 char * 29 xstrdup(const char *s) 30 { 31 char *ptr; 32 size_t len; 33 34 len = strlen(s) + 1; 35 ptr = xmalloc(len); 36 37 strlcpy(ptr, s, len); 38 return (ptr); 39 } 40 41 void * 42 xcalloc(size_t nmemb, size_t size) 43 { 44 void *ptr; 45 46 if (size == 0 || nmemb == 0) 47 fatalx("zero size"); 48 if (SIZE_MAX / nmemb < size) 49 fatalx("nmemb * size > SIZE_MAX"); 50 if ((ptr = calloc(nmemb, size)) == NULL) 51 fatal("xcalloc failed"); 52 53 return (ptr); 54 } 55 56 void * 57 xmalloc(size_t size) 58 { 59 void *ptr; 60 61 if (size == 0) 62 fatalx("zero size"); 63 if ((ptr = malloc(size)) == NULL) 64 fatal("xmalloc failed"); 65 66 return (ptr); 67 } 68 69 void * 70 xrealloc(void *oldptr, size_t nmemb, size_t size) 71 { 72 size_t newsize = nmemb * size; 73 void *newptr; 74 75 if (newsize == 0) 76 fatalx("zero size"); 77 if (SIZE_MAX / nmemb < size) 78 fatalx("nmemb * size > SIZE_MAX"); 79 if ((newptr = realloc(oldptr, newsize)) == NULL) 80 fatal("xrealloc failed"); 81 82 return (newptr); 83 } 84 85 int printflike2 86 xasprintf(char **ret, const char *fmt, ...) 87 { 88 va_list ap; 89 int i; 90 91 va_start(ap, fmt); 92 i = xvasprintf(ret, fmt, ap); 93 va_end(ap); 94 95 return (i); 96 } 97 98 int 99 xvasprintf(char **ret, const char *fmt, va_list ap) 100 { 101 int i; 102 103 i = vasprintf(ret, fmt, ap); 104 if (i < 0 || *ret == NULL) 105 fatal("xvasprintf failed"); 106 107 return (i); 108 } 109 110 int printflike3 111 xsnprintf(char *buf, size_t len, const char *fmt, ...) 112 { 113 va_list ap; 114 int i; 115 116 va_start(ap, fmt); 117 i = xvsnprintf(buf, len, fmt, ap); 118 va_end(ap); 119 120 return (i); 121 } 122 123 int 124 xvsnprintf(char *buf, size_t len, const char *fmt, va_list ap) 125 { 126 int i; 127 128 if (len > INT_MAX) 129 fatalx("len > INT_MAX"); 130 131 i = vsnprintf(buf, len, fmt, ap); 132 if (i < 0) 133 fatal("vsnprintf failed"); 134 135 return (i); 136 } 137