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Diffstat (limited to 'src/util/libgnu/strtok_r.c')
-rw-r--r-- | src/util/libgnu/strtok_r.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/util/libgnu/strtok_r.c b/src/util/libgnu/strtok_r.c new file mode 100644 index 000000000..789c95c79 --- /dev/null +++ b/src/util/libgnu/strtok_r.c | |||
@@ -0,0 +1,76 @@ | |||
1 | /* Reentrant string tokenizer. Generic version. | ||
2 | Copyright (C) 1991, 1996-1999, 2001, 2004, 2007, 2009-2011 Free Software | ||
3 | Foundation, Inc. | ||
4 | This file is part of the GNU C Library. | ||
5 | |||
6 | This program is free software: you can redistribute it and/or modify | ||
7 | it under the terms of the GNU General Public License as published by | ||
8 | the Free Software Foundation; either version 3 of the License, or | ||
9 | (at your option) any later version. | ||
10 | |||
11 | This program is distributed in the hope that it will be useful, | ||
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | GNU General Public License for more details. | ||
15 | |||
16 | You should have received a copy of the GNU General Public License | ||
17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | ||
18 | |||
19 | #ifdef HAVE_CONFIG_H | ||
20 | # include <gnunet_config.h> | ||
21 | #endif | ||
22 | |||
23 | #include <string.h> | ||
24 | |||
25 | #ifdef _LIBC | ||
26 | # undef strtok_r | ||
27 | # undef __strtok_r | ||
28 | #else | ||
29 | # define __strtok_r strtok_r | ||
30 | # define __rawmemchr strchr | ||
31 | #endif | ||
32 | |||
33 | /* Parse S into tokens separated by characters in DELIM. | ||
34 | If S is NULL, the saved pointer in SAVE_PTR is used as | ||
35 | the next starting point. For example: | ||
36 | char s[] = "-abc-=-def"; | ||
37 | char *sp; | ||
38 | x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def" | ||
39 | x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL | ||
40 | x = strtok_r(NULL, "=", &sp); // x = NULL | ||
41 | // s = "abc\0-def\0" | ||
42 | */ | ||
43 | char * | ||
44 | __strtok_r (char *s, const char *delim, char **save_ptr) | ||
45 | { | ||
46 | char *token; | ||
47 | |||
48 | if (s == NULL) | ||
49 | s = *save_ptr; | ||
50 | |||
51 | /* Scan leading delimiters. */ | ||
52 | s += strspn (s, delim); | ||
53 | if (*s == '\0') | ||
54 | { | ||
55 | *save_ptr = s; | ||
56 | return NULL; | ||
57 | } | ||
58 | |||
59 | /* Find the end of the token. */ | ||
60 | token = s; | ||
61 | s = strpbrk (token, delim); | ||
62 | if (s == NULL) | ||
63 | /* This token finishes the string. */ | ||
64 | *save_ptr = __rawmemchr (token, '\0'); | ||
65 | else | ||
66 | { | ||
67 | /* Terminate the token and make *SAVE_PTR point past it. */ | ||
68 | *s = '\0'; | ||
69 | *save_ptr = s + 1; | ||
70 | } | ||
71 | return token; | ||
72 | } | ||
73 | #ifdef weak_alias | ||
74 | libc_hidden_def (__strtok_r) | ||
75 | weak_alias (__strtok_r, strtok_r) | ||
76 | #endif | ||