Strings::blend

Strings

<?php

	/**
	 * @param string $a
	 * @param string $b
	 * @return string
	 */
	public static function blend($a, $b)
	{
		$pos = strrpos($a, $b);
		if ($pos !== FALSE) { // is croping
			return substr($a, 0, $pos + strlen($b));

		} else { // is merging
			$fromRight = 0;
			do {
				$fromRight--;
				$pos = strrpos($a, $match = substr($b, 0, $fromRight));
			} while ($pos === FALSE && $match);

			return substr($a, 0, $pos + strlen($match)) . substr($b, $fromRight);
		}
	}

StringsTest.php

<?php

/**
 * This file is part of the Kdyby (http://www.kdyby.org)
 *
 * Copyright (c) 2008, 2011 Filip Procházka (filip.prochazka@kdyby.org)
 *
 * @license http://www.kdyby.org/license
 */

namespace Kdyby\Testing\Tools;

use Kdyby;
use Nette;



/**
 * @author Filip Procházka
 */
class TestTest extends Kdyby\Testing\TestCase
{

	/**
	 * @return array
	 */
	public function getBlendData()
	{
		return array(
			array(
				'/var/www/libs/library/namespace/subns', 'namespace', '/var/www/libs/library/namespace',
			),
			array(
				'abcdefghij', 'hijkl', 'abcdefghijkl',
			),
			array(
				'/var/www/libs/library/namespace', 'namespace', '/var/www/libs/library/namespace',
			),
			array(
				'/var/www/libs/library/namespace', 'namespace/subns', '/var/www/libs/library/namespace/subns',
			)
		);
	}



	/**
	 * @dataProvider getBlendData
	 */
	public function testBlend($a, $b, $result)
	{
		$this->assertSame($result, Kdyby\Tools\Strings::blend($a, $b));
	}

}