blob: dedd0f1073c3e2e7df64daa41281ed09b3cca8fd (
plain)
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
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/* Copyright (C) 1992-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <string.h>
#undef __strsep
#undef strsep
char *
__strsep (char **stringp, const char *delim)
{
char *begin, *end;
begin = *stringp;
if (begin == NULL)
return NULL;
/* A frequent case is when the delimiter string contains only one
character. Here we don't need to call the expensive `strpbrk'
function and instead work using `strchr'. */
if (delim[0] == '\0' || delim[1] == '\0')
{
char ch = delim[0];
if (ch == '\0')
end = NULL;
else
{
if (*begin == ch)
end = begin;
else if (*begin == '\0')
end = NULL;
else
end = strchr (begin + 1, ch);
}
}
else
/* Find the end of the token. */
end = strpbrk (begin, delim);
if (end)
{
/* Terminate the token and set *STRINGP past NUL character. */
*end++ = '\0';
*stringp = end;
}
else
/* No more delimiters; this is the last token. */
*stringp = NULL;
return begin;
}
weak_alias (__strsep, strsep)
strong_alias (__strsep, __strsep_g)
libc_hidden_def (__strsep_g)
|
