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/* Copyright (C) 2004, 2007, 2009-2020 Free Software Foundation, Inc.
Written by Yoann Vandoorselaere <yoann@prelude-ids.org>.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <https://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
/* Specification. */
#include <string.h>
char *
strsep (char **stringp, const char *delim)
{
char *start = *stringp;
char *ptr;
if (start == NULL)
return NULL;
/* Optimize the case of no delimiters. */
if (delim[0] == '\0')
{
*stringp = NULL;
return start;
}
/* Optimize the case of one delimiter. */
if (delim[1] == '\0')
ptr = strchr (start, delim[0]);
else
/* The general case. */
ptr = strpbrk (start, delim);
if (ptr == NULL)
{
*stringp = NULL;
return start;
}
*ptr = '\0';
*stringp = ptr + 1;
return start;
}
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