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69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02111-1301, USA */
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/* Funktions for comparing with wild-cards */
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#include "mysys_priv.h"
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/* Test if a string is "comparable" to a wild-card string */
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/* returns 0 if the strings are "comparable" */
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char wild_many='*';
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char wild_one='?';
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char wild_prefix=0;
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int wild_compare(register const char *str, register const char *wildstr)
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{
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reg3 int flag;
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DBUG_ENTER("wild_compare");
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while (*wildstr)
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{
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while (*wildstr && *wildstr != wild_many && *wildstr != wild_one)
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{
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if (*wildstr == wild_prefix && wildstr[1])
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wildstr++;
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if (*wildstr++ != *str++) DBUG_RETURN(1);
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}
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if (! *wildstr ) DBUG_RETURN (*str != 0);
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if (*wildstr++ == wild_one)
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{
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if (! *str++) DBUG_RETURN (1); /* One char; skipp */
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}
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else
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{ /* Found '*' */
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if (!*wildstr) DBUG_RETURN(0); /* '*' as last char: OK */
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flag=(*wildstr != wild_many && *wildstr != wild_one);
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do
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{
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if (flag)
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{
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char cmp;
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if ((cmp= *wildstr) == wild_prefix && wildstr[1])
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cmp=wildstr[1];
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while (*str && *str != cmp)
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str++;
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if (!*str) DBUG_RETURN (1);
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}
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if (wild_compare(str,wildstr) == 0) DBUG_RETURN (0);
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} while (*str++ && wildstr[0] != wild_many);
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DBUG_RETURN(1);
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}
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}
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DBUG_RETURN (*str != '\0');
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} /* wild_compare */
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