comparestringcaseinsensitivedesc.as

一个2D基于verlet的Flash物理引擎。它用AS3编写而成。Fisix的目标是应用到游戏等计算量很大的实时应用中。尽管flash比c/c++要慢,很棒的物理引擎

/**
 * DATA STRUCTURES FOR GAME PROGRAMMERS
 * Copyright (c) 2007 Michael Baczynski, http://www.polygonal.de
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package de.polygonal.ds.sort.compare 
{
	public function compareStringCaseInSensitiveDesc(a:String, b:String):int
	{
		a = a.toLowerCase();
		b = b.toLowerCase();
		
		if (a.length + b.length > 2)
		{
			var r:int = 0;
			var k:int = a.length > b.length ? a.length : b.length;
			for (var i:int = 0; i < k; i++)
			{		
				r = b.charCodeAt(i) - a.charCodeAt(i);
				if (r != 0)	break;
			}
			return r;
		}
		else
			return b.charCodeAt(0) - a.charCodeAt(0);
	}
}