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 1.5 2015/05/21 00:13:43 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 #include <err.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39 #include "compat_stringlist.h"
  40
  41 #define _SL_CHUNKSIZE   20
  42
  43 /*
  44  * sl_init(): Initialize a string list
  45  */
  46 StringList *
  47 sl_init(void)
  48 {
  49         StringList *sl;
  50
  51         sl = malloc(sizeof(StringList));
  52         if (sl == NULL)
  53                 err(1, "stringlist");
  54
  55         sl->sl_cur = 0;
  56         sl->sl_max = _SL_CHUNKSIZE;
  57         sl->sl_str = reallocarray(NULL, sl->sl_max, sizeof(char *));
  58         if (sl->sl_str == NULL)
  59                 err(1, "stringlist");
  60         return sl;
  61 }
  62
  63
  64 /*
  65  * sl_add(): Add an item to the string list
  66  */
  67 int
  68 sl_add(StringList *sl, char *name)
  69 {
  70         if (sl->sl_cur == sl->sl_max - 1) {
  71                 sl->sl_max += _SL_CHUNKSIZE;
  72                 sl->sl_str = reallocarray(sl->sl_str,
  73                     sl->sl_max, sizeof(char *));
  74                 if (sl->sl_str == NULL)
  75                         return (-1);
  76         }
  77         sl->sl_str[sl->sl_cur++] = name;
  78         return (0);
  79 }
  80
  81
  82 /*
  83  * sl_free(): Free a stringlist
  84  */
  85 void
  86 sl_free(StringList *sl, int all)
  87 {
  88         size_t i;
  89
  90         if (sl == NULL)
  91                 return;
  92         if (sl->sl_str) {
  93                 if (all)
  94                         for (i = 0; i < sl->sl_cur; i++)
  95                                 free(sl->sl_str[i]);
  96                 free(sl->sl_str);
  97         }
  98         free(sl);
  99 }
 100
 101
 102 /*
 103  * sl_find(): Find a name in the string list
 104  */
 105 char *
 106 sl_find(StringList *sl, const char *name)
 107 {
 108         size_t i;
 109
 110         for (i = 0; i < sl->sl_cur; i++)
 111                 if (strcmp(sl->sl_str[i], name) == 0)
 112                         return sl->sl_str[i];
 113
 114         return NULL;
 115 }
 116
 117 #endif