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#include <fnmatch.h>
#include <wctype.h>
#include <string.h>
#include <wchar.h>
#include <stdlib.h>
#include <limits.h>
static int next(const char **s)
{
wchar_t c;
int l = mbtowc(&c, *s, MB_LEN_MAX);
/* hack to allow literal matches of invalid byte sequences */
if (l < 0) return (unsigned char)*(*s)++ - 0x100;
*s += l;
return c;
}
#define BRACKET_ERROR -0x100
#define BRACKET_NOCHAR -0x101
static int bracket_next(const char **s)
{
int c;
int type;
if (**s == '[') {
type = *(*s+1);
if (type == '.' || type == '=') {
*s += 2;
c = next(s);
if (c <= 0) return BRACKET_ERROR;
if (**s == type && *(*s+1) == ']') {
*s += 2;
return c;
}
for (; **s && (**s != type || *(*s+1) != ']'); (*s)++);
if (!**s) return BRACKET_ERROR;
*s += 2;
return BRACKET_NOCHAR;
}
}
c = next(s);
if (c <= 0) return BRACKET_ERROR;
return c;
}
#define __FNM_CONT 0x8000
int fnmatch(const char *p, const char *s, int flags)
{
int c, d, k;
int not;
int match;
int first;
int no_slash = (flags & FNM_PATHNAME) ? '/' : 0;
int no_period = (flags & FNM_PERIOD) && !(flags & __FNM_CONT) ? '.' : 0x100;
const char *p1;
flags |= __FNM_CONT;
while ((c = *p++)) {
switch (c) {
case '?':
k = next(&s);
if (!k || k == no_period || k == no_slash)
return FNM_NOMATCH;
break;
case '\\':
if (!(flags & FNM_NOESCAPE)) {
c = *p++;
goto literal;
}
if (*s++ != c) return FNM_NOMATCH;
break;
case '*':
for (; *p == '*'; p++);
if (*p && !*s) return FNM_NOMATCH;
if (*s == no_period)
return FNM_NOMATCH;
if (!*p && (!no_slash || !strchr(s, no_slash)))
return 0;
for (; *s; s++)
if (!fnmatch(p, s, flags))
return 0;
else if (*s == no_slash)
break;
return FNM_NOMATCH;
case '[':
p1 = p-1;
not = (*p == '!' || *p == '^');
if (not) p++;
k = next(&s);
if (!k || k == no_slash || k == no_period)
return FNM_NOMATCH;
match = 0;
first = 1;
for (;;) {
if (!*p) goto literal_bracket;
if (*p == ']' && !first) break;
first = 0;
if (*p == '[' && *(p+1) == ':') {
const char *z;
p += 2;
for (z=p; *z && (*z != ':' || *(z+1) != ']'); z++);
if (!*z || z-p > 32) { /* FIXME: symbolic const? */
return FNM_NOMATCH;
} else {
char class[33];
memcpy(class, p, z-p);
class[z-p] = 0;
if (iswctype(k, wctype(class)))
match = 1;
}
p = z+2;
continue;
}
c = bracket_next(&p);
if (c == BRACKET_ERROR) {
literal_bracket:
match = (k=='[');
p = p1;
not = 0;
break;
}
if (c == BRACKET_NOCHAR)
continue;
if (*p == '-' && *(p+1) != ']') {
p++;
d = bracket_next(&p);
if (d == BRACKET_ERROR)
goto literal_bracket;
if (d == BRACKET_NOCHAR)
continue;
if (k >= c && k <= d)
match = 1;
continue;
}
if (k == c) match = 1;
}
p++;
if (not == match)
return FNM_NOMATCH;
break;
default:
literal:
if (*s++ != c)
return FNM_NOMATCH;
if (c == no_slash && (flags & FNM_PERIOD)) {
no_period = '.';
continue;
}
break;
}
no_period = 0x100;
}
if (*s) return FNM_NOMATCH;
return 0;
}
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