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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. | |
4 | ||
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. | |
9 | ||
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. | |
14 | ||
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. */ | |
19 | ||
20 | #include "../git-compat-util.h" | |
21 | ||
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" | |
31 | */ | |
32 | char * | |
33 | gitstrtok_r (char *s, const char *delim, char **save_ptr) | |
34 | { | |
35 | char *token; | |
36 | ||
37 | if (s == NULL) | |
38 | s = *save_ptr; | |
39 | ||
40 | /* Scan leading delimiters. */ | |
41 | s += strspn (s, delim); | |
42 | if (*s == '\0') | |
43 | { | |
44 | *save_ptr = s; | |
45 | return NULL; | |
46 | } | |
47 | ||
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 | |
55 | { | |
56 | /* Terminate the token and make *SAVE_PTR point past it. */ | |
57 | *s = '\0'; | |
58 | *save_ptr = s + 1; | |
59 | } | |
60 | return token; | |
61 | } |