mirror of git://git.gnupg.org/gnupg.git
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/* strsep.c - Replacement for strsep().
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* Copyright (C) 1992, 1993, 1996, 1997, 1998, 1999,
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* 2004 Free Software Foundation, Inc.
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*
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* This file is part of the GNU C Library.
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*
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* The GNU C Library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* The GNU C Library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with the GNU C Library; if not, write to the Free
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* Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307 USA.
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*/
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/* Code taken from glibc-2.3.2/sysdeps/generic/strsep.c and slightly
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modified for use with GnuPG. */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <string.h>
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char *
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strsep (char **stringp, const char *delim)
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{
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char *begin, *end;
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begin = *stringp;
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if (begin == NULL)
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return NULL;
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/* A frequent case is when the delimiter string contains only one
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character. Here we don't need to call the expensive `strpbrk'
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function and instead work using `strchr'. */
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if (delim[0] == '\0' || delim[1] == '\0')
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{
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char ch = delim[0];
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if (ch == '\0')
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end = NULL;
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else
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{
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if (*begin == ch)
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end = begin;
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else if (*begin == '\0')
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end = NULL;
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else
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end = strchr (begin + 1, ch);
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}
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}
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else
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/* Find the end of the token. */
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end = strpbrk (begin, delim);
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if (end)
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{
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/* Terminate the token and set *STRINGP past NUL character. */
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*end++ = '\0';
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*stringp = end;
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}
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else
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/* No more delimiters; this is the last token. */
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*stringp = NULL;
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return begin;
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}
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