compat_stringlist.c

   1 #include "config.h"
   2
   3 #if HAVE_STRINGLIST
   4
   5 int dummy;
   6
   7 #else
   8
   9 /*      $Id: compat_stringlist.c,v 1.6 2015/11/07 14:22:29 schwarze Exp $       */
  10 /*
  11  * Copyright (c) 1994 Christos Zoulas <christos@netbsd.org>
  12  * All rights reserved.
  13  *
  14  * Redistribution and use in source and binary forms, with or without
  15  * modification, are permitted provided that the following conditions
  16  * are met:
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  * 2. Redistributions in binary form must reproduce the above copyright
  20  *    notice, this list of conditions and the following disclaimer in the
  21  *    documentation and/or other materials provided with the distribution.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  24  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  25  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  27  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #if HAVE_ERR
  37 #include <err.h>
  38 #endif
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include "compat_stringlist.h"
  42
  43 #define _SL_CHUNKSIZE   20
  44
  45 /*
  46  * sl_init(): Initialize a string list
  47  */
  48 StringList *
  49 sl_init(void)
  50 {
  51         StringList *sl;
  52
  53         sl = malloc(sizeof(StringList));
  54         if (sl == NULL)
  55                 err(1, "stringlist");
  56
  57         sl->sl_cur = 0;
  58         sl->sl_max = _SL_CHUNKSIZE;
  59         sl->sl_str = reallocarray(NULL, sl->sl_max, sizeof(char *));
  60         if (sl->sl_str == NULL)
  61                 err(1, "stringlist");
  62         return sl;
  63 }
  64
  65
  66 /*
  67  * sl_add(): Add an item to the string list
  68  */
  69 int
  70 sl_add(StringList *sl, char *name)
  71 {
  72         if (sl->sl_cur == sl->sl_max - 1) {
  73                 sl->sl_max += _SL_CHUNKSIZE;
  74                 sl->sl_str = reallocarray(sl->sl_str,
  75                     sl->sl_max, sizeof(char *));
  76                 if (sl->sl_str == NULL)
  77                         return (-1);
  78         }
  79         sl->sl_str[sl->sl_cur++] = name;
  80         return (0);
  81 }
  82
  83
  84 /*
  85  * sl_free(): Free a stringlist
  86  */
  87 void
  88 sl_free(StringList *sl, int all)
  89 {
  90         size_t i;
  91
  92         if (sl == NULL)
  93                 return;
  94         if (sl->sl_str) {
  95                 if (all)
  96                         for (i = 0; i < sl->sl_cur; i++)
  97                                 free(sl->sl_str[i]);
  98                 free(sl->sl_str);
  99         }
 100         free(sl);
 101 }
 102
 103
 104 /*
 105  * sl_find(): Find a name in the string list
 106  */
 107 char *
 108 sl_find(StringList *sl, const char *name)
 109 {
 110         size_t i;
 111
 112         for (i = 0; i < sl->sl_cur; i++)
 113                 if (strcmp(sl->sl_str[i], name) == 0)
 114                         return sl->sl_str[i];
 115
 116         return NULL;
 117 }
 118
 119 #endif