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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; 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 */
/* File : bchange.c
Author : Michael widenius
Updated: 1987-03-20
Defines: bchange()
bchange(dst, old_length, src, new_length, tot_length)
replaces old_length characters at dst to new_length characters from
src in a buffer with tot_length bytes.
*/
#include "m_string.h"
void bchange(register unsigned char *dst, size_t old_length,
register const unsigned char *src,
size_t new_length, size_t tot_length)
{
size_t rest=tot_length-old_length;
if (old_length < new_length)
bmove_upp(dst+rest+new_length,dst+tot_length,rest);
else
memmove(dst+new_length, dst+old_length, rest);
memcpy(dst,src,new_length);
}
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