111 lines
2.0 KiB
C++
111 lines
2.0 KiB
C++
|
/**
|
||
|
* =========================================================================
|
||
|
* File : regex.cpp
|
||
|
* Project : 0 A.D.
|
||
|
* Description : minimal regex implementation
|
||
|
* =========================================================================
|
||
|
*/
|
||
|
|
||
|
// license: GPL; see lib/license.txt
|
||
|
|
||
|
#include "precompiled.h"
|
||
|
|
||
|
|
||
|
int match_wildcard(const char* s, const char* 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 char* s2 = 0;
|
||
|
const char* w2 = 0;
|
||
|
|
||
|
while(*s)
|
||
|
{
|
||
|
const int wc = *w;
|
||
|
if(wc == '*')
|
||
|
{
|
||
|
// wildcard string ended with * => match.
|
||
|
if(*++w == '\0')
|
||
|
return 1;
|
||
|
|
||
|
w2 = w;
|
||
|
s2 = s+1;
|
||
|
}
|
||
|
// match one character
|
||
|
else if(toupper(wc) == toupper(*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');
|
||
|
}
|
||
|
|
||
|
int match_wildcardw(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');
|
||
|
}
|