115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
/*-
|
|
* Copyright (c) 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Paul Borman at Krystal Technologies.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static char sccsid[] = "@(#)mbrune.c 8.1 (Berkeley) 6/27/93";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <limits.h>
|
|
#include <rune.h>
|
|
#include <stddef.h>
|
|
#include <string.h>
|
|
|
|
char *
|
|
mbrune(string, c)
|
|
const char *string;
|
|
rune_t c;
|
|
{
|
|
char const *result;
|
|
rune_t r;
|
|
|
|
while ((r = sgetrune(string, MB_LEN_MAX, &result))) {
|
|
if (r == c)
|
|
return ((char *)string);
|
|
string = result == string ? string + 1 : result;
|
|
}
|
|
|
|
return (c == *string ? (char *)string : NULL);
|
|
}
|
|
|
|
char *
|
|
mbrrune(string, c)
|
|
const char *string;
|
|
rune_t c;
|
|
{
|
|
const char *last = 0;
|
|
char const *result;
|
|
rune_t r;
|
|
|
|
while ((r = sgetrune(string, MB_LEN_MAX, &result))) {
|
|
if (r == c)
|
|
last = string;
|
|
string = result == string ? string + 1 : result;
|
|
}
|
|
return (c == *string ? (char *)string : (char *)last);
|
|
}
|
|
|
|
char *
|
|
mbmb(string, pattern)
|
|
const char *string;
|
|
char *pattern;
|
|
{
|
|
rune_t first, r;
|
|
size_t plen, slen;
|
|
char const *result;
|
|
|
|
plen = strlen(pattern);
|
|
slen = strlen(string);
|
|
if (plen > slen)
|
|
return (0);
|
|
|
|
first = sgetrune(pattern, plen, &result);
|
|
if (result == string)
|
|
return (0);
|
|
|
|
while (slen >= plen && (r = sgetrune(string, slen, &result))) {
|
|
if (r == first) {
|
|
if (strncmp(string, pattern, slen) == 0)
|
|
return ((char *) string);
|
|
}
|
|
if (result == string) {
|
|
--slen;
|
|
++string;
|
|
} else {
|
|
slen -= result - string;
|
|
string = result;
|
|
}
|
|
}
|
|
return (0);
|
|
}
|