Merge branch 'nd/index-pack-l10n-buf-overflow' into maint-1.8.1
[git/jnareb-git.git] / compat / strtok_r.c
blob7b5d568a9651ae674ce553effa310e2e82711efe
1 /* Reentrant string tokenizer. Generic version.
2 Copyright (C) 1991,1996-1999,2001,2004 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library 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 GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 #include "../git-compat-util.h"
22 /* Parse S into tokens separated by characters in DELIM.
23 If S is NULL, the saved pointer in SAVE_PTR is used as
24 the next starting point. For example:
25 char s[] = "-abc-=-def";
26 char *sp;
27 x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def"
28 x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL
29 x = strtok_r(NULL, "=", &sp); // x = NULL
30 // s = "abc\0-def\0"
32 char *
33 gitstrtok_r (char *s, const char *delim, char **save_ptr)
35 char *token;
37 if (s == NULL)
38 s = *save_ptr;
40 /* Scan leading delimiters. */
41 s += strspn (s, delim);
42 if (*s == '\0')
44 *save_ptr = s;
45 return NULL;
48 /* Find the end of the token. */
49 token = s;
50 s = strpbrk (token, delim);
51 if (s == NULL)
52 /* This token finishes the string. */
53 *save_ptr = token + strlen (token);
54 else
56 /* Terminate the token and make *SAVE_PTR point past it. */
57 *s = '\0';
58 *save_ptr = s + 1;
60 return token;