sortix--sortix/libc/memccpy.cpp

/*******************************************************************************

    Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.

    This file is part of the Sortix C Library.

    The Sortix C Library is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or (at your
    option) any later version.

    The Sortix C Library 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 Lesser General Public
    License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.

    memccpy.cpp
    Copy memory until length is met or character is encountered.

*******************************************************************************/

#include <stddef.h>
#include <stdint.h>
#include <string.h>

extern "C" void* memccpy(void* destp, const void* srcp, int c, size_t n)
{
	uint8_t* dest = (uint8_t*) destp;
	const uint8_t* src = (const uint8_t*) srcp;
	for ( size_t i = 0; i < n; i++ )
		if ( src[i] == (uint8_t) c )
			return dest + i;
		else
			dest[i] = src[i];
	return NULL;
}