mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 19:30:10 +00:00
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
|
/* Copyright (C) 1991 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 Library General Public License as
|
||
|
|
published by the Free Software Foundation; either version 2 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
|
||
|
|
Library General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Library General Public
|
||
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
||
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
||
|
|
Cambridge, MA 02139, USA. */
|
||
|
|
|
||
|
|
#include <ansidecl.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
|
||
|
|
/* Return the length of the maximum initial segment
|
||
|
|
of S which contains only characters in ACCEPT. */
|
||
|
|
size_t
|
||
|
|
DEFUN(strspn, (s, accept), CONST char *s AND CONST char *accept)
|
||
|
|
{
|
||
|
|
register CONST char *p;
|
||
|
|
register CONST char *a;
|
||
|
|
register size_t count = 0;
|
||
|
|
|
||
|
|
for (p = s; *p != '\0'; ++p)
|
||
|
|
{
|
||
|
|
for (a = accept; *a != '\0'; ++a)
|
||
|
|
if (*p == *a)
|
||
|
|
break;
|
||
|
|
if (*a == '\0')
|
||
|
|
return count;
|
||
|
|
else
|
||
|
|
++count;
|
||
|
|
}
|
||
|
|
|
||
|
|
return count;
|
||
|
|
}
|