bin/mandoc/mandoc_aux.c

   1 /*      $Id: mandoc_aux.c,v 1.10 2017/06/12 19:05:47 schwarze Exp $ */
   2 /*
   3  * Copyright (c) 2009, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   4  * Copyright (c) 2014, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
   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 AUTHORS DISCLAIM ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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 #include "config.h"
  19
  20 #include <sys/types.h>
  21
  22 #if HAVE_ERR
  23 #include <err.h>
  24 #endif
  25 #include <stdarg.h>
  26 #include <stdlib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29
  30 #include "mandoc.h"
  31 #include "mandoc_aux.h"
  32
  33
  34 int
  35 mandoc_asprintf(char **dest, const char *fmt, ...)
  36 {
  37         va_list  ap;
  38         int      ret;
  39
  40         va_start(ap, fmt);
  41         ret = vasprintf(dest, fmt, ap);
  42         va_end(ap);
  43
  44         if (ret == -1)
  45                 err((int)MANDOCLEVEL_SYSERR, NULL);
  46         return ret;
  47 }
  48
  49 void *
  50 mandoc_calloc(size_t num, size_t size)
  51 {
  52         void    *ptr;
  53
  54         ptr = calloc(num, size);
  55         if (ptr == NULL)
  56                 err((int)MANDOCLEVEL_SYSERR, NULL);
  57         return ptr;
  58 }
  59
  60 void *
  61 mandoc_malloc(size_t size)
  62 {
  63         void    *ptr;
  64
  65         ptr = malloc(size);
  66         if (ptr == NULL)
  67                 err((int)MANDOCLEVEL_SYSERR, NULL);
  68         return ptr;
  69 }
  70
  71 void *
  72 mandoc_realloc(void *ptr, size_t size)
  73 {
  74         ptr = realloc(ptr, size);
  75         if (ptr == NULL)
  76                 err((int)MANDOCLEVEL_SYSERR, NULL);
  77         return ptr;
  78 }
  79
  80 void *
  81 mandoc_reallocarray(void *ptr, size_t num, size_t size)
  82 {
  83         ptr = reallocarray(ptr, num, size);
  84         if (ptr == NULL)
  85                 err((int)MANDOCLEVEL_SYSERR, NULL);
  86         return ptr;
  87 }
  88
  89 void *
  90 mandoc_recallocarray(void *ptr, size_t oldnum, size_t num, size_t size)
  91 {
  92         ptr = recallocarray(ptr, oldnum, num, size);
  93         if (ptr == NULL)
  94                 err((int)MANDOCLEVEL_SYSERR, NULL);
  95         return ptr;
  96 }
  97
  98 char *
  99 mandoc_strdup(const char *ptr)
 100 {
 101         char    *p;
 102
 103         p = strdup(ptr);
 104         if (p == NULL)
 105                 err((int)MANDOCLEVEL_SYSERR, NULL);
 106         return p;
 107 }
 108
 109 char *
 110 mandoc_strndup(const char *ptr, size_t sz)
 111 {
 112         char    *p;
 113
 114         p = mandoc_malloc(sz + 1);
 115         memcpy(p, ptr, sz);
 116         p[(int)sz] = '\0';
 117         return p;
 118 }