39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
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/* Copyright (C) 2000 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/* File : bchange.c
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Author : Michael widenius
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Updated: 1987-03-20
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Defines: bchange()
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bchange(dst, old_length, src, new_length, tot_length)
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replaces old_length characters at dst to new_length characters from
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src in a buffer with tot_length bytes.
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*/
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#include <my_global.h>
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#include "m_string.h"
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void bchange(register uchar *dst, size_t old_length, register const uchar *src,
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size_t new_length, size_t tot_length)
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{
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size_t rest=tot_length-old_length;
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if (old_length < new_length)
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bmove_upp(dst+rest+new_length,dst+tot_length,rest);
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else
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bmove(dst+new_length,dst+old_length,rest);
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memcpy(dst,src,new_length);
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}
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