mariadb/strings/my_strchr.c
monty@mysql.com cdf64f0f57 Fix of crashed 5.1 tree (wrong merge + wrong pullout patch forced us to create a new 5.1 tree)
This is a merge of 5.0 -> 5.1 + some code from old 5.1 tree to get all tests to work and keep the .frm format the same as the old 5.1 tree.
2005-11-05 13:20:35 +02:00

48 lines
1.4 KiB
C

/* Copyright (C) 2005 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 */
/*
my_strchr(cs, str, end, c) returns a pointer to the first place in
str where c (1-byte character) occurs, or NULL if c does not occur
in str. This function is multi-byte safe.
TODO: should be moved to CHARSET_INFO if it's going to be called
frequently.
*/
#include <my_global.h>
#include "m_string.h"
#include "m_ctype.h"
byte *my_strchr(CHARSET_INFO *cs, const char *str, const char *end,
char c)
{
uint mbl;
while (str < end)
{
mbl= my_mbcharlen(cs, *(uchar *)str);
if (mbl < 2)
{
if (*str == c)
return((char *)str);
str++;
}
else
str+= mbl;
}
return(0);
}