sortix-mirror/libc/wchar/wcslcat.cpp

35 lines
1.3 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2014.
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/>.
wchar/wcslcat.cpp
Appends a string onto another string truncating if the string is too small.
*******************************************************************************/
#include <wchar.h>
extern "C"
size_t wcslcat(wchar_t* restrict dest, const wchar_t* restrict src, size_t size)
{
size_t dest_len = wcsnlen(dest, size);
if ( size <= dest_len )
return dest_len + wcslen(src);
return dest_len + wcslcpy(dest + dest_len, src, size - dest_len);
}