strcompat.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 1999 - 2006, Digium, Inc.
   5  *
   6  * See http://www.asterisk.org for more information about
   7  * the Asterisk project. Please do not directly contact
   8  * any of the maintainers of this project for assistance;
   9  * the project provides a web site, mailing lists and IRC
  10  * channels for your use.
  11  *
  12  * This program is free software, distributed under the terms of
  13  * the GNU General Public License Version 2. See the LICENSE file
  14  * at the top of the source tree.
  15  */
  16
  17 /*! \file
  18  *
  19  * \brief Compatibility functions for strsep and strtoq missing on Solaris
  20  */
  21
  22 #include <sys/types.h>
  23 #include <stdio.h>
  24
  25 #include "asterisk.h"
  26
  27 #include "asterisk/compat.h"
  28
  29 #ifndef HAVE_STRSEP
  30 char *strsep(char **str, const char *delims)
  31 {
  32     char *token;
  33
  34     if (!*str) {
  35         /* No more tokens */
  36         return NULL;
  37     }
  38
  39     token = *str;
  40     while (**str != '\0') {
  41         if (strchr(delims, **str)) {
  42             **str = '\0';
  43             (*str)++;
  44             return token;
  45         }
  46         (*str)++;
  47     }
  48
  49     /* There is no other token */
  50     *str = NULL;
  51
  52     return token;
  53 }
  54 #endif
  55
  56 #ifndef HAVE_SETENV
  57 int setenv(const char *name, const char *value, int overwrite)
  58 {
  59         unsigned char *buf;
  60         int buflen;
  61
  62         buflen = strlen(name) + strlen(value) + 2;
  63         if (!(buf = alloca(buflen)))
  64                 return -1;
  65
  66         if (!overwrite && getenv(name))
  67                 return 0;
  68
  69         snprintf(buf, buflen, "%s=%s", name, value);
  70
  71         return putenv(buf);
  72 }
  73 #endif
  74
  75 #ifndef HAVE_UNSETENV
  76 int unsetenv(const char *name)
  77 {
  78         return setenv(name, "", 0);
  79 }
  80 #endif