strtok_r.h
1.95 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
/* Split string into tokens
Copyright (C) 2004 Free Software Foundation, Inc.
Written by Simon Josefsson.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA. */
#ifndef STRTOK_R_H
#define STRTOK_R_H
/* Get strtok_r declaration, if available. */
#include <string.h>
/* Parse S into tokens separated by characters in DELIM.
If S is NULL, the saved pointer in SAVE_PTR is used as
the next starting point. For example:
char s[] = "-abc-=-def";
char *sp;
x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def"
x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL
x = strtok_r(NULL, "=", &sp); // x = NULL
// s = "abc\0-def\0"
This is a variant of strtok() that is multithread-safe.
For the POSIX documentation for this function, see:
http://www.opengroup.org/onlinepubs/009695399/functions/strtok.html
Caveat: It modifies the original string.
Caveat: These functions cannot be used on constant strings.
Caveat: The identity of the delimiting character is lost.
Caveat: It doesn't work with multibyte strings unless all of the delimiter
characters are ASCII characters < 0x30.
See also strsep().
*/
#if defined HAVE_DECL_STRTOK_R && !HAVE_DECL_STRTOK_R
extern char *strtok_r(char *restrict s, const char *restrict sep,
char **restrict lasts);
#endif
#endif /* STRTOK_R_H */