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61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
/*
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(C) Copyright IBM Corp. 2007, 2008
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of IBM nor the names of its contributors may be
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used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <string.h>
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#include <stddef.h>
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#include "ea_internal.h"
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#include <ea.h>
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COMPAT_EA_ALIAS (strncat_ea);
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/*
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* Not the fastest thing ever since it reads through the data once on
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* strlen and once on memcpy.
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*/
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__ea char *
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strncat_ea (__ea char *dest, __ea const char *src, size_ea_t n)
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{
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size_ea_t length_src;
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size_ea_t length_dest;
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__ea char *new_dest;
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size_ea_t smaller_length;
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length_src = strlen_ea (src);
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length_dest = strlen_ea (dest);
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new_dest = dest + length_dest;
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smaller_length = length_src < n ? length_src : n;
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memcpy_ea ((__ea void *) new_dest, (__ea void *) src, smaller_length);
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/* null out last character */
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memset_ea ((__ea void *) (new_dest + smaller_length), 0, 1);
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return dest;
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}
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