/*-
* Copyright (c) 1980, 1991 The Regents of the University of California.
* All rights reserved.
*
* 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. 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.
*/
#include <sys/param.h>
/* So we can build this in userland for the tests in strlist.c */
#if defined(_KERNEL) || defined(_STANDALONE)
#include <lib/libkern/libkern.h>
#else
int pmatch(const char *, const char *, const char **);
#endif
/*
* pmatch():
* Return 2 on exact match.
* Return 1 on substring match.
* Return 0 on no match.
* Return -1 on error.
* *estr will point to the end of the longest exact or substring match.
*/
int
pmatch(const char *string, const char *pattern, const char **estr)
{
u_char stringc, patternc, rangec;
int match, negate_range;
const char *oestr, *pestr, *testr = NULL;
if (estr == NULL)
estr = &testr;
for (;; ++string) {
stringc = *string;
switch (patternc = *pattern++) {
case 0:
*estr = string;
return stringc == '\0' ? 2 : 1;
case '?':
if (stringc == '\0')
return 0;
*estr = string;
break;
case '*':
if (!*pattern) {
while (*string)
string++;
*estr = string;
return 2;
}
oestr = *estr;
pestr = NULL;
do {
switch (pmatch(string, pattern, estr)) {
case -1:
return -1;
case 0:
break;
case 1:
pestr = *estr;
break;
case 2:
return 2;
default:
return -1;
}
*estr = string;
}
while (*string++);
