strinstr.c
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上传日期:2022-05-23
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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 */
- /* File : strinstr.c
- Author : Monty & David
- Updated: 1986.12.08
- Defines: strinstr()
- strinstr(src, pat) looks for an instance of pat in src. pat is not a
- regex(3) pattern, it is a literal string which must be matched exactly.
- The result 0 if the pattern was not found else it is the start char of
- the pattern counted from the beginning of the string, where the first
- char is 1.
- */
- #include <my_global.h>
- #include "m_string.h"
- uint strinstr(reg1 const char *str,reg4 const char *search)
- {
- reg2 my_string i,j;
- my_string start = (my_string) str;
- skip:
- while (*str != ' ')
- {
- if (*str++ == *search)
- {
- i=(my_string) str; j= (my_string) search+1;
- while (*j)
- if (*i++ != *j++) goto skip;
- return ((uint) (str - start));
- }
- }
- return (0);
- }