sortix--sortix/libc/strncasecmp.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/>.

	strncasecmp.cpp
	Compares a prefix of two strings ignoring case.

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

#include <string.h>
#include <ctype.h>

extern "C" int strncasecmp(const char* a, const char* b, size_t maxcount)
{
	while ( maxcount-- )
	{
		char ac = tolower(*a++), bc = tolower(*b++);
		if ( ac == '\0' && bc == '\0' )
			return 0;
		if ( ac < bc )
			return -1;
		if ( ac > bc )
			return 1;
	}
	return 0;
}