diff options
Diffstat (limited to 'gl/strsep.c')
-rw-r--r-- | gl/strsep.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/gl/strsep.c b/gl/strsep.c new file mode 100644 index 0000000..a2a3ffa --- /dev/null +++ b/gl/strsep.c | |||
@@ -0,0 +1,58 @@ | |||
1 | /* Copyright (C) 2004, 2007, 2009, 2010 Free Software Foundation, Inc. | ||
2 | |||
3 | Written by Yoann Vandoorselaere <yoann@prelude-ids.org>. | ||
4 | |||
5 | This program is free software; you can redistribute it and/or modify | ||
6 | it under the terms of the GNU General Public License as published by | ||
7 | the Free Software Foundation; either version 3, or (at your option) | ||
8 | any later version. | ||
9 | |||
10 | This program is distributed in the hope that it will be useful, | ||
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
13 | GNU General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU General Public License | ||
16 | along with this program; if not, write to the Free Software Foundation, | ||
17 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | ||
18 | |||
19 | #ifdef HAVE_CONFIG_H | ||
20 | # include <config.h> | ||
21 | #endif | ||
22 | |||
23 | /* Specification. */ | ||
24 | #include <string.h> | ||
25 | |||
26 | char * | ||
27 | strsep (char **stringp, const char *delim) | ||
28 | { | ||
29 | char *start = *stringp; | ||
30 | char *ptr; | ||
31 | |||
32 | if (start == NULL) | ||
33 | return NULL; | ||
34 | |||
35 | /* Optimize the case of no delimiters. */ | ||
36 | if (delim[0] == '\0') | ||
37 | { | ||
38 | *stringp = NULL; | ||
39 | return start; | ||
40 | } | ||
41 | |||
42 | /* Optimize the case of one delimiter. */ | ||
43 | if (delim[1] == '\0') | ||
44 | ptr = strchr (start, delim[0]); | ||
45 | else | ||
46 | /* The general case. */ | ||
47 | ptr = strpbrk (start, delim); | ||
48 | if (ptr == NULL) | ||
49 | { | ||
50 | *stringp = NULL; | ||
51 | return start; | ||
52 | } | ||
53 | |||
54 | *ptr = '\0'; | ||
55 | *stringp = ptr + 1; | ||
56 | |||
57 | return start; | ||
58 | } | ||