<?php
/*
 * Copyright 2005-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

function unicode_urldecode($url)
{
	preg_match_all('/%u([[:alnum:]]{4})/', $url, $a);

	foreach ($a[1] as $uniord) {
		$dec = hexdec($uniord);
		$utf = '';

		if ($dec < 128) {
			$utf = chr($dec);
		} else if ($dec < 2048) {
			$utf = chr(192 + (($dec - ($dec % 64)) / 64));
			$utf .= chr(128 + ($dec % 64));
		} else {
			$utf = chr(224 + (($dec - ($dec % 4096)) / 4096));
			$utf .= chr(128 + ((($dec % 4096) - ($dec % 64)) / 64));
			$utf .= chr(128 + ($dec % 64));
		}
		$url = str_replace('%u' . $uniord, $utf, $url);
	}
	return urldecode($url);
}

function cutstring($string, $length = 75, $ellipsis = '')
{
	$result = '';
	if (strlen($string) > $length) {
		$splitstring = explode("[__cut__]", wordwrap($string, $length, "[__cut__]", true));
		$result = $splitstring[0] . $ellipsis;
	}else{
		$result = $string;
	}
	return $result;
}

function escape_with_cdata($text)
{
	return "<![CDATA[" . str_replace("]]>", "]]>]]&gt;<![CDATA[", $text) . "]]>";
}

?>