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/* Copyright (C) 2010-2020 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (compat_fnmatch.c).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stddef.h>
#include <compat/fnmatch.h>
/* Implemnentation of fnmatch(3) so it can be
* distributed to non *nix platforms.
*
* No flags are implemented ATM.
* We don't use them. Add flags as needed. */
int rl_fnmatch(const char *pattern, const char *string, int flags)
{
int rv;
const char *c = NULL;
int charmatch = 0;
for (c = pattern; *c != '\0'; c++)
{
/* String ended before pattern */
if ((*c != '*') && (*string == '\0'))
return FNM_NOMATCH;
switch (*c)
{
/* Match any number of unknown chars */
case '*':
/* Find next node in the pattern
* ignoring multiple asterixes
*/
do {
c++;
if (*c == '\0')
return 0;
} while (*c == '*');
/* Match the remaining pattern
* ignoring more and more characters. */
do {
/* We reached the end of the string without a
* match. There is a way to optimize this by
* calculating the minimum chars needed to
* match the remaining pattern but I don't
* think it is worth the work ATM.
*/
if (*string == '\0')
return FNM_NOMATCH;
rv = rl_fnmatch(c, string, flags);
string++;
} while (rv != 0);
return 0;
/* Match char from list */
case '[':
charmatch = 0;
for (c++; *c != ']'; c++)
{
/* Bad format */
if (*c == '\0')
return FNM_NOMATCH;
/* Match already found */
if (charmatch)
continue;
if (*c == *string)
charmatch = 1;
}
/* No match in list */
if (!charmatch)
return FNM_NOMATCH;
string++;
break;
/* Has any character */
case '?':
string++;
break;
/* Match following character verbatim */
case '\\':
c++;
/* Dangling escape at end of pattern.
* FIXME: Was c == '\0' (makes no sense).
* Not sure if c == NULL or *c == '\0'
* is intended. Assuming *c due to c++ right before. */
if (*c == '\0')
return FNM_NOMATCH;
default:
if (*c != *string)
return FNM_NOMATCH;
string++;
}
}
/* End of string and end of pattend */
if (*string == '\0')
return 0;
return FNM_NOMATCH;
}
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