From e0a5d0011605404adb384abd37d88513ec8f7088 Mon Sep 17 00:00:00 2001 From: Rat Date: Sun, 20 Jun 2010 17:13:10 +0200 Subject: added mysql source for win build --HG-- branch : trunk --- externals/mysql/strings/r_strinstr.c | 50 ++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 externals/mysql/strings/r_strinstr.c (limited to 'externals/mysql/strings/r_strinstr.c') diff --git a/externals/mysql/strings/r_strinstr.c b/externals/mysql/strings/r_strinstr.c new file mode 100644 index 00000000000..fb1e0c5a090 --- /dev/null +++ b/externals/mysql/strings/r_strinstr.c @@ -0,0 +1,50 @@ +/* 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; version 2 of the License. + + 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 */ + +/* + Author : David + strintstr(src, from, pat) looks for an instance of pat in src + backwards from pos from. 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 begining of the string. +*/ + +#include +#include "m_string.h" + +size_t r_strinstr(reg1 const char * str, size_t from, reg4 const char * search) +{ + reg2 const char *i, *j; + size_t len = strlen(search); + /* pointer to the last char of buff */ + const char * start = str + from - 1; + /* pointer to the last char of search */ + const char * search_end = search + len - 1; + + skip: + while (start >= str) /* Cant be != because the first char */ + { + if (*start-- == *search_end) + { + i = start; j = search_end - 1; + while (j >= search && start > str) + if (*i-- != *j--) + goto skip; + return (size_t) ((start - len) - str + 3); + } + } + return (0); +} -- cgit v1.2.3