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550 lines
No EOL
17 KiB
PHP
550 lines
No EOL
17 KiB
PHP
<?php
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/**
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* base include file for SimpleTest
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* @package SimpleTest
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* @subpackage WebTester
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* @version $Id: url.php 2011 2011-04-29 08:22:48Z pp11 $
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*/
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/**#@+
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* include other SimpleTest class files
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*/
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require_once(dirname(__FILE__) . '/encoding.php');
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/**#@-*/
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/**
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* URL parser to replace parse_url() PHP function which
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* got broken in PHP 4.3.0. Adds some browser specific
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* functionality such as expandomatics.
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* Guesses a bit trying to separate the host from
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* the path and tries to keep a raw, possibly unparsable,
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* request string as long as possible.
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* @package SimpleTest
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* @subpackage WebTester
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*/
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class SimpleUrl {
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private $scheme;
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private $username;
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private $password;
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private $host;
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private $port;
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public $path;
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private $request;
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private $fragment;
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private $x;
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private $y;
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private $target;
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private $raw = false;
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/**
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* Constructor. Parses URL into sections.
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* @param string $url Incoming URL.
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* @access public
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*/
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function __construct($url = '') {
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list($x, $y) = $this->chompCoordinates($url);
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$this->setCoordinates($x, $y);
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$this->scheme = $this->chompScheme($url);
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if ($this->scheme === 'file') {
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// Unescaped backslashes not used in directory separator context
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// will get caught by this, but they should have been urlencoded
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// anyway so we don't care. If this ends up being a problem, the
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// host regexp must be modified to match for backslashes when
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// the scheme is file.
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$url = str_replace('\\', '/', $url);
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}
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list($this->username, $this->password) = $this->chompLogin($url);
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$this->host = $this->chompHost($url);
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$this->port = false;
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if (preg_match('/(.*?):(.*)/', $this->host, $host_parts)) {
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if ($this->scheme === 'file' && strlen($this->host) === 2) {
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// DOS drive was placed in authority; promote it to path.
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$url = '/' . $this->host . $url;
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$this->host = false;
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} else {
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$this->host = $host_parts[1];
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$this->port = (integer)$host_parts[2];
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}
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}
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$this->path = $this->chompPath($url);
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$this->request = $this->parseRequest($this->chompRequest($url));
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$this->fragment = (strncmp($url, "#", 1) == 0 ? substr($url, 1) : false);
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$this->target = false;
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}
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/**
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* Extracts the X, Y coordinate pair from an image map.
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* @param string $url URL so far. The coordinates will be
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* removed.
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* @return array X, Y as a pair of integers.
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* @access private
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*/
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protected function chompCoordinates(&$url) {
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if (preg_match('/(.*)\?(\d+),(\d+)$/', $url, $matches)) {
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$url = $matches[1];
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return array((integer)$matches[2], (integer)$matches[3]);
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}
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return array(false, false);
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}
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/**
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* Extracts the scheme part of an incoming URL.
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* @param string $url URL so far. The scheme will be
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* removed.
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* @return string Scheme part or false.
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* @access private
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*/
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protected function chompScheme(&$url) {
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if (preg_match('#^([^/:]*):(//)(.*)#', $url, $matches)) {
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$url = $matches[2] . $matches[3];
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return $matches[1];
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}
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return false;
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}
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/**
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* Extracts the username and password from the
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* incoming URL. The // prefix will be reattached
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* to the URL after the doublet is extracted.
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* @param string $url URL so far. The username and
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* password are removed.
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* @return array Two item list of username and
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* password. Will urldecode() them.
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* @access private
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*/
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protected function chompLogin(&$url) {
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$prefix = '';
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if (preg_match('#^(//)(.*)#', $url, $matches)) {
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$prefix = $matches[1];
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$url = $matches[2];
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}
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if (preg_match('#^([^/]*)@(.*)#', $url, $matches)) {
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$url = $prefix . $matches[2];
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$parts = explode(":", $matches[1]);
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return array(
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urldecode($parts[0]),
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isset($parts[1]) ? urldecode($parts[1]) : false);
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}
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$url = $prefix . $url;
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return array(false, false);
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}
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/**
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* Extracts the host part of an incoming URL.
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* Includes the port number part. Will extract
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* the host if it starts with // or it has
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* a top level domain or it has at least two
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* dots.
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* @param string $url URL so far. The host will be
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* removed.
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* @return string Host part guess or false.
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* @access private
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*/
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protected function chompHost(&$url) {
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if (preg_match('!^(//)(.*?)(/.*|\?.*|#.*|$)!', $url, $matches)) {
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$url = $matches[3];
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return $matches[2];
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}
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if (preg_match('!(.*?)(\.\./|\./|/|\?|#|$)(.*)!', $url, $matches)) {
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$tlds = SimpleUrl::getAllTopLevelDomains();
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if (preg_match('/[a-z0-9\-]+\.(' . $tlds . ')/i', $matches[1])) {
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$url = $matches[2] . $matches[3];
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return $matches[1];
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} elseif (preg_match('/[a-z0-9\-]+\.[a-z0-9\-]+\.[a-z0-9\-]+/i', $matches[1])) {
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$url = $matches[2] . $matches[3];
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return $matches[1];
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}
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}
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return false;
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}
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/**
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* Extracts the path information from the incoming
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* URL. Strips this path from the URL.
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* @param string $url URL so far. The host will be
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* removed.
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* @return string Path part or '/'.
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* @access private
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*/
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protected function chompPath(&$url) {
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if (preg_match('/(.*?)(\?|#|$)(.*)/', $url, $matches)) {
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$url = $matches[2] . $matches[3];
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return ($matches[1] ? $matches[1] : '');
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}
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return '';
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}
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/**
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* Strips off the request data.
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* @param string $url URL so far. The request will be
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* removed.
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* @return string Raw request part.
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* @access private
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*/
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protected function chompRequest(&$url) {
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if (preg_match('/\?(.*?)(#|$)(.*)/', $url, $matches)) {
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$url = $matches[2] . $matches[3];
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return $matches[1];
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}
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return '';
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}
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/**
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* Breaks the request down into an object.
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* @param string $raw Raw request.
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* @return SimpleFormEncoding Parsed data.
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* @access private
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*/
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protected function parseRequest($raw) {
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$this->raw = $raw;
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$request = new SimpleGetEncoding();
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foreach (explode("&", $raw) as $pair) {
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if (preg_match('/(.*?)=(.*)/', $pair, $matches)) {
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$request->add(urldecode($matches[1]), urldecode($matches[2]));
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} elseif ($pair) {
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$request->add(urldecode($pair), '');
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}
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}
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return $request;
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}
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/**
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* Accessor for protocol part.
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* @param string $default Value to use if not present.
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* @return string Scheme name, e.g "http".
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* @access public
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*/
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function getScheme($default = false) {
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return $this->scheme ? $this->scheme : $default;
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}
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/**
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* Accessor for user name.
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* @return string Username preceding host.
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* @access public
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*/
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function getUsername() {
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return $this->username;
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}
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/**
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* Accessor for password.
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* @return string Password preceding host.
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* @access public
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*/
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function getPassword() {
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return $this->password;
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}
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/**
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* Accessor for hostname and port.
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* @param string $default Value to use if not present.
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* @return string Hostname only.
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* @access public
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*/
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function getHost($default = false) {
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return $this->host ? $this->host : $default;
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}
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/**
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* Accessor for top level domain.
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* @return string Last part of host.
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* @access public
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*/
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function getTld() {
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$path_parts = pathinfo($this->getHost());
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return (isset($path_parts['extension']) ? $path_parts['extension'] : false);
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}
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/**
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* Accessor for port number.
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* @return integer TCP/IP port number.
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* @access public
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*/
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function getPort() {
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return $this->port;
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}
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/**
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* Accessor for path.
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* @return string Full path including leading slash if implied.
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* @access public
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*/
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function getPath() {
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if (! $this->path && $this->host) {
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return '/';
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}
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return $this->path;
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}
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/**
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* Accessor for page if any. This may be a
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* directory name if ambiguious.
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* @return Page name.
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* @access public
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*/
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function getPage() {
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if (! preg_match('/([^\/]*?)$/', $this->getPath(), $matches)) {
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return false;
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}
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return $matches[1];
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}
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/**
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* Gets the path to the page.
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* @return string Path less the page.
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* @access public
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*/
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function getBasePath() {
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if (! preg_match('/(.*\/)[^\/]*?$/', $this->getPath(), $matches)) {
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return false;
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}
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return $matches[1];
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}
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/**
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* Accessor for fragment at end of URL after the "#".
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* @return string Part after "#".
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* @access public
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*/
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function getFragment() {
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return $this->fragment;
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}
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/**
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* Sets image coordinates. Set to false to clear
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* them.
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* @param integer $x Horizontal position.
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* @param integer $y Vertical position.
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* @access public
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*/
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function setCoordinates($x = false, $y = false) {
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if (($x === false) || ($y === false)) {
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$this->x = $this->y = false;
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return;
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}
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$this->x = (integer)$x;
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$this->y = (integer)$y;
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}
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/**
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* Accessor for horizontal image coordinate.
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* @return integer X value.
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* @access public
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*/
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function getX() {
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return $this->x;
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}
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/**
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* Accessor for vertical image coordinate.
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* @return integer Y value.
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* @access public
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*/
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function getY() {
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return $this->y;
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}
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/**
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* Accessor for current request parameters
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* in URL string form. Will return teh original request
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* if at all possible even if it doesn't make much
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* sense.
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* @return string Form is string "?a=1&b=2", etc.
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* @access public
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*/
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function getEncodedRequest() {
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if ($this->raw) {
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$encoded = $this->raw;
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} else {
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$encoded = $this->request->asUrlRequest();
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}
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if ($encoded) {
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return '?' . preg_replace('/^\?/', '', $encoded);
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}
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return '';
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}
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/**
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* Adds an additional parameter to the request.
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* @param string $key Name of parameter.
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* @param string $value Value as string.
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* @access public
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*/
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function addRequestParameter($key, $value) {
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$this->raw = false;
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$this->request->add($key, $value);
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}
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/**
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* Adds additional parameters to the request.
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* @param hash/SimpleFormEncoding $parameters Additional
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* parameters.
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* @access public
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*/
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function addRequestParameters($parameters) {
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$this->raw = false;
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$this->request->merge($parameters);
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}
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/**
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* Clears down all parameters.
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* @access public
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*/
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function clearRequest() {
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$this->raw = false;
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$this->request = new SimpleGetEncoding();
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}
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/**
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* Gets the frame target if present. Although
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* not strictly part of the URL specification it
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* acts as similarily to the browser.
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* @return boolean/string Frame name or false if none.
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* @access public
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*/
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function getTarget() {
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return $this->target;
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}
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/**
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* Attaches a frame target.
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* @param string $frame Name of frame.
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* @access public
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*/
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function setTarget($frame) {
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$this->raw = false;
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$this->target = $frame;
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}
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/**
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* Renders the URL back into a string.
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* @return string URL in canonical form.
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* @access public
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*/
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function asString() {
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$path = $this->path;
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$scheme = $identity = $host = $port = $encoded = $fragment = '';
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if ($this->username && $this->password) {
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$identity = $this->username . ':' . $this->password . '@';
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}
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if ($this->getHost()) {
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$scheme = $this->getScheme() ? $this->getScheme() : 'http';
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$scheme .= '://';
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$host = $this->getHost();
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} elseif ($this->getScheme() === 'file') {
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// Safest way; otherwise, file URLs on Windows have an extra
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// leading slash. It might be possible to convert file://
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// URIs to local file paths, but that requires more research.
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$scheme = 'file://';
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}
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if ($this->getPort() && $this->getPort() != 80 ) {
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$port = ':'.$this->getPort();
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}
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if (substr($this->path, 0, 1) == '/') {
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$path = $this->normalisePath($this->path);
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}
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$encoded = $this->getEncodedRequest();
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$fragment = $this->getFragment() ? '#'. $this->getFragment() : '';
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$coords = $this->getX() === false ? '' : '?' . $this->getX() . ',' . $this->getY();
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return "$scheme$identity$host$port$path$encoded$fragment$coords";
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}
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/**
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* Replaces unknown sections to turn a relative
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* URL into an absolute one. The base URL can
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* be either a string or a SimpleUrl object.
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* @param string/SimpleUrl $base Base URL.
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* @access public
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*/
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function makeAbsolute($base) {
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if (! is_object($base)) {
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$base = new SimpleUrl($base);
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}
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if ($this->getHost()) {
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$scheme = $this->getScheme();
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$host = $this->getHost();
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$port = $this->getPort() ? ':' . $this->getPort() : '';
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$identity = $this->getIdentity() ? $this->getIdentity() . '@' : '';
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if (! $identity) {
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$identity = $base->getIdentity() ? $base->getIdentity() . '@' : '';
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}
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} else {
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$scheme = $base->getScheme();
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$host = $base->getHost();
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$port = $base->getPort() ? ':' . $base->getPort() : '';
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$identity = $base->getIdentity() ? $base->getIdentity() . '@' : '';
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}
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$path = $this->normalisePath($this->extractAbsolutePath($base));
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$encoded = $this->getEncodedRequest();
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$fragment = $this->getFragment() ? '#'. $this->getFragment() : '';
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$coords = $this->getX() === false ? '' : '?' . $this->getX() . ',' . $this->getY();
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return new SimpleUrl("$scheme://$identity$host$port$path$encoded$fragment$coords");
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}
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/**
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* Replaces unknown sections of the path with base parts
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* to return a complete absolute one.
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* @param string/SimpleUrl $base Base URL.
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* @param string Absolute path.
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* @access private
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*/
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protected function extractAbsolutePath($base) {
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if ($this->getHost()) {
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return $this->path;
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}
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if (! $this->isRelativePath($this->path)) {
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return $this->path;
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}
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if ($this->path) {
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return $base->getBasePath() . $this->path;
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}
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return $base->getPath();
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}
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/**
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* Simple test to see if a path part is relative.
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* @param string $path Path to test.
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* @return boolean True if starts with a "/".
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* @access private
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*/
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protected function isRelativePath($path) {
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return (substr($path, 0, 1) != '/');
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}
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/**
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* Extracts the username and password for use in rendering
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* a URL.
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* @return string/boolean Form of username:password or false.
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* @access public
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*/
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function getIdentity() {
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if ($this->username && $this->password) {
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return $this->username . ':' . $this->password;
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}
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return false;
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}
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/**
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* Replaces . and .. sections of the path.
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* @param string $path Unoptimised path.
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* @return string Path with dots removed if possible.
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* @access public
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*/
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function normalisePath($path) {
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$path = preg_replace('|/\./|', '/', $path);
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return preg_replace('|/[^/]+/\.\./|', '/', $path);
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}
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/**
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* A pipe seperated list of all TLDs that result in two part
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* domain names.
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* @return string Pipe separated list.
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* @access public
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*/
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static function getAllTopLevelDomains() {
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return 'com|edu|net|org|gov|mil|int|biz|info|name|pro|aero|coop|museum';
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}
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}
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?>
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