/* Copyright (c) 2000 TXT DataKonsult Ab & Monty Program Ab

   Copyright (c) 2009-2011, Monty Program Ab

   Redistribution and use in source and binary forms, with or without

   modification, are permitted provided that the following conditions are

   met:

   1. Redistributions of source code must retain the above copyright

   notice, this list of conditions and the following disclaimer.

   2. Redistributions in binary form must the following disclaimer in

     the documentation and/or other materials provided with the

     distribution.

   THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND ANY

   EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR

   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

   USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT

   OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

   SUCH DAMAGE.

*/

/*  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 "strings_def.h"

void bchange(register uchar *dst, size_t old_length, register const uchar *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

    bmove(dst+new_length,dst+old_length,rest);

  memcpy(dst,src,new_length);

}