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/*
* Do shell-style pattern matching for '?', '\', '[..]', and '*' wildcards.
* Returns 1 if match, 0 if not.
*/
#include "sysincludes.h"
#include "mtools.h"
static int casecmp(char a,char b)
{
return toupper(a) == toupper(b);
}
static int exactcmp(char a,char b)
{
return a == b;
}
static int parse_range(const char **p, const char *s, char *out,
int (*compfn)(char a, char b))
{
char table[256];
int reverse;
int i;
short first, last;
if (**p == '^') {
reverse = 1;
(*p)++;
} else
reverse=0;
for(i=0; i<256; i++)
table[i]=0;
while(**p != ']') {
if(!**p)
return 0;
if((*p)[1] == '-') {
first = **p;
(*p)+=2;
if(**p == ']')
last = 256;
else
last = *((*p)++);
for(i=first; i<last; i++)
table[i] = 1;
} else
table[(int) *((*p)++)] = 1;
}
if(out)
*out = *s;
if(table[(int) *s])
return 1 ^ reverse;
if(compfn == exactcmp)
return reverse;
if(table[tolower(*s)]) {
if(out)
*out = tolower(*s);
return 1 ^ reverse;
}
if(table[toupper(*s)]) {
if(out)
*out = toupper(*s);
return 1 ^ reverse;
}
return reverse;
}
static int _match(const char *s, const char *p, char *out, int Case,
int (*compfn) (char a, char b))
{
for (; *p != '\0'; ) {
switch (*p) {
case '?': /* match any one character */
if (*s == '\0')
return(0);
if(out)
*(out++) = *s;
break;
case '*': /* match everything */
while (*p == '*')
p++;
/* search for next char in pattern */
while(*s) {
if(_match(s, p, out, Case, compfn))
return 1;
if(out)
*out++ = *s;
s++;
}
continue;
case '[': /* match range of characters */
p++;
if(!parse_range(&p, s, out++, compfn))
return 0;
break;
case '\\': /* Literal match with next character */
p++;
/* fall thru */
default:
if (!compfn(*s,*p))
return(0);
if(out)
*(out++) = *p;
break;
}
p++;
s++;
}
if(out)
*out = '\0';
/* string ended prematurely ? */
if (*s != '\0')
return(0);
else
return(1);
}
int match(const char *s, const char *p, char *out, int Case)
{
int (*compfn)(char a, char b);
if(Case)
compfn = casecmp;
else
/*compfn = exactcmp;*/
compfn = casecmp;
return _match(s, p, out, Case, compfn);
}
int hasWildcards(const char *string)
{
return (int) strpbrk(string, "?*");
}
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