mf_wcomp.c
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:2k
- /* 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 != ' ');
- } /* wild_compare */