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<?php
/*
** Zabbix
** Copyright (C) 2001-2016 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program 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 General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
class CUrl {
private $url;
protected $reference;
protected $query;
protected $arguments = [];
/**
* WARNING: the class doesn't support parsing query strings with multi-dimentional arrays.
*
* @param string|null $url
*/
public function __construct($url = null) {
if (empty($url)) {
$this->formatGetArguments();
$this->url = basename($_SERVER['SCRIPT_NAME']);
}
else {
$this->url = $url;
// parse reference
$pos = strpos($url, '#');
if ($pos !== false) {
$this->reference = substr($url, $pos + 1);
$this->url = substr($url, 0, $pos);
}
// parse query
$pos = strpos($url, '?');
if ($pos !== false) {
$this->query = substr($url, $pos + 1);
$this->url = substr($url, 0, $pos);
}
$this->formatArguments();
}
}
/**
* Creates a HTTP query string from the arguments set in self::$arguments and saves it in self::$query.
*/
public function formatQuery() {
$this->query = http_build_query($this->arguments);
}
public function formatGetArguments() {
$this->arguments = $_GET;
$this->formatQuery();
}
public function formatArguments($query = null) {
if ($query === null) {
$query = $this->query;
}
if ($query !== null) {
$args = explode('&', $query);
foreach ($args as $id => $arg) {
if (empty($arg)) {
continue;
}
if (strpos($arg, '=') !== false) {
list($name, $value) = explode('=', $arg);
$this->arguments[urldecode($name)] = urldecode($value);
}
else {
$this->arguments[$arg] = '';
}
}
}
$this->formatQuery();
}
/**
* Return relative url.
*
* @return string
*/
public function getUrl() {
$this->formatQuery();
$url = $this->url;
$url .= $this->query ? '?'.$this->query : '';
$url .= $this->reference ? '#'.urlencode($this->reference) : '';
return $url;
}
public function removeArgument($key) {
unset($this->arguments[$key]);
return $this;
}
public function setArgument($key, $value = '') {
$this->arguments[$key] = $value;
return $this;
}
public function toString() {
return $this->getUrl();
}
}
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