0ad/source/lib/regex.cpp
janwas 8a52113e60 huge cleanup and conversion of most string handling (especially paths) to unicode
please note: format strings must be %hs for char* arguments and %ls for
wchar_t*

This was SVN commit r7161.
2009-11-03 21:46:35 +00:00

77 lines
1.7 KiB
C++

/* Copyright (C) 2009 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* =========================================================================
* File : regex.cpp
* Project : 0 A.D.
* Description : minimal regex implementation
* =========================================================================
*/
#include "precompiled.h"
int match_wildcard(const wchar_t* s, const wchar_t* w)
{
if(!w)
return 1;
// saved position in both strings, used to expand '*':
// s2 is advanced until match.
// initially 0 - we abort on mismatch before the first '*'.
const wchar_t* s2 = 0;
const wchar_t* w2 = 0;
while(*s)
{
const wchar_t wc = *w;
if(wc == '*')
{
// wildcard string ended with * => match.
if(*++w == '\0')
return 1;
w2 = w;
s2 = s+1;
}
// match one character
else if(towupper(wc) == towupper(*s) || wc == '?')
{
w++;
s++;
}
// mismatched character
else
{
// no '*' found yet => mismatch.
if(!s2)
return 0;
// resume at previous position+1
w = w2;
s = s2++;
}
}
// strip trailing * in wildcard string
while(*w == '*')
w++;
return (*w == '\0');
}