bird/lib/patmatch.c
Martin Mares dee929d868 Added function for shell-like pattern matching. Will be used for
matching interface names in protocol-to-iface bindings.
1998-11-29 14:47:24 +00:00

55 lines
830 B
C

/*
* BIRD Library -- Generic Shell-Like Pattern Matching (currently only '?' and '*')
*
* (c) 1998 Martin Mares, <mj@atrey.karlin.mff.cuni.cz>
*/
#include "nest/bird.h"
#include "lib/string.h"
#ifndef MATCH_FUNC_NAME
#define MATCH_FUNC_NAME patmatch
#endif
#ifndef Convert
#define Convert(x) x
#endif
int
MATCH_FUNC_NAME(byte *p, byte *s)
{
while (*p)
{
if (*p == '?' && *s)
p++, s++;
else if (*p == '*')
{
int z = p[1];
if (!z)
return 1;
if (z == '\\' && p[2])
z = p[2];
z = Convert(z);
for(;;)
{
while (*s && Convert(*s) != z)
s++;
if (!*s)
return 0;
if (MATCH_FUNC_NAME(p+1, s))
return 1;
s++;
}
}
else
{
if (*p == '\\' && p[1])
p++;
if (Convert(*p++) != Convert(*s++))
return 0;
}
}
return !*s;
}