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-rw-r--r--mysys/mf_wcomp.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/mysys/mf_wcomp.c b/mysys/mf_wcomp.c
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+/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this library; 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 */