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/* Copyright (C) 2000 MySQL AB
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* Funktions for comparing with wild-cards */
#include "mysys_priv.h"
/* Test if a string is "comparable" to a wild-card string */
/* returns 0 if the strings are "comparable" */
char wild_many='*';
char wild_one='?';
char wild_prefix=0;
int wild_compare(register const char *str, register const char *wildstr)
{
reg3 int flag;
DBUG_ENTER("wild_compare");
while (*wildstr)
{
while (*wildstr && *wildstr != wild_many && *wildstr != wild_one)
{
if (*wildstr == wild_prefix && wildstr[1])
wildstr++;
if (*wildstr++ != *str++) DBUG_RETURN(1);
}
if (! *wildstr ) DBUG_RETURN (*str != 0);
if (*wildstr++ == wild_one)
{
if (! *str++) DBUG_RETURN (1); /* One char; skipp */
}
else
{ /* Found '*' */
if (!*wildstr) DBUG_RETURN(0); /* '*' as last char: OK */
flag=(*wildstr != wild_many && *wildstr != wild_one);
do
{
if (flag)
{
char cmp;
if ((cmp= *wildstr) == wild_prefix && wildstr[1])
cmp=wildstr[1];
while (*str && *str != cmp)
str++;
if (!*str) DBUG_RETURN (1);
}
if (wild_compare(str,wildstr) == 0) DBUG_RETURN (0);
} while (*str++ && wildstr[0] != wild_many);
DBUG_RETURN(1);
}
}
DBUG_RETURN (*str != '\0');
} /* wild_compare */
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