555 lines
14 KiB
PHP
555 lines
14 KiB
PHP
<?php
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namespace Guzzle\Http;
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use Guzzle\Common\Exception\InvalidArgumentException;
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/**
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* Parses and generates URLs based on URL parts. In favor of performance, URL parts are not validated.
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*/
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class Url
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{
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protected $scheme;
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protected $host;
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protected $port;
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protected $username;
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protected $password;
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protected $path = '';
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protected $fragment;
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/** @var QueryString Query part of the URL */
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protected $query;
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/**
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* Factory method to create a new URL from a URL string
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*
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* @param string $url Full URL used to create a Url object
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*
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* @return Url
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* @throws InvalidArgumentException
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*/
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public static function factory($url)
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{
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static $defaults = array('scheme' => null, 'host' => null, 'path' => null, 'port' => null, 'query' => null,
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'user' => null, 'pass' => null, 'fragment' => null);
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if (false === ($parts = parse_url($url))) {
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throw new InvalidArgumentException('Was unable to parse malformed url: ' . $url);
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}
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$parts += $defaults;
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// Convert the query string into a QueryString object
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if ($parts['query'] || 0 !== strlen($parts['query'])) {
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$parts['query'] = QueryString::fromString($parts['query']);
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}
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return new static($parts['scheme'], $parts['host'], $parts['user'],
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$parts['pass'], $parts['port'], $parts['path'], $parts['query'],
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$parts['fragment']);
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}
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/**
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* Build a URL from parse_url parts. The generated URL will be a relative URL if a scheme or host are not provided.
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*
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* @param array $parts Array of parse_url parts
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*
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* @return string
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*/
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public static function buildUrl(array $parts)
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{
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$url = $scheme = '';
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if (isset($parts['scheme'])) {
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$scheme = $parts['scheme'];
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$url .= $scheme . ':';
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}
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if (isset($parts['host'])) {
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$url .= '//';
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if (isset($parts['user'])) {
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$url .= $parts['user'];
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if (isset($parts['pass'])) {
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$url .= ':' . $parts['pass'];
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}
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$url .= '@';
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}
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$url .= $parts['host'];
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// Only include the port if it is not the default port of the scheme
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if (isset($parts['port'])
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&& !(($scheme == 'http' && $parts['port'] == 80) || ($scheme == 'https' && $parts['port'] == 443))
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) {
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$url .= ':' . $parts['port'];
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}
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}
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// Add the path component if present
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if (isset($parts['path']) && 0 !== strlen($parts['path'])) {
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// Always ensure that the path begins with '/' if set and something is before the path
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if ($url && $parts['path'][0] != '/' && substr($url, -1) != '/') {
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$url .= '/';
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}
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$url .= $parts['path'];
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}
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// Add the query string if present
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if (isset($parts['query'])) {
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$url .= '?' . $parts['query'];
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}
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// Ensure that # is only added to the url if fragment contains anything.
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if (isset($parts['fragment'])) {
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$url .= '#' . $parts['fragment'];
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}
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return $url;
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}
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/**
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* Create a new URL from URL parts
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*
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* @param string $scheme Scheme of the URL
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* @param string $host Host of the URL
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* @param string $username Username of the URL
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* @param string $password Password of the URL
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* @param int $port Port of the URL
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* @param string $path Path of the URL
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* @param QueryString|array|string $query Query string of the URL
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* @param string $fragment Fragment of the URL
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*/
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public function __construct($scheme, $host, $username = null, $password = null, $port = null, $path = null, QueryString $query = null, $fragment = null)
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{
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$this->scheme = $scheme;
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$this->host = $host;
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$this->port = $port;
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$this->username = $username;
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$this->password = $password;
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$this->fragment = $fragment;
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if (!$query) {
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$this->query = new QueryString();
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} else {
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$this->setQuery($query);
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}
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$this->setPath($path);
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}
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/**
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* Clone the URL
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*/
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public function __clone()
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{
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$this->query = clone $this->query;
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}
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/**
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* Returns the URL as a URL string
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*
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* @return string
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*/
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public function __toString()
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{
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return self::buildUrl($this->getParts());
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}
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/**
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* Get the parts of the URL as an array
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*
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* @return array
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*/
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public function getParts()
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{
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$query = (string) $this->query;
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return array(
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'scheme' => $this->scheme,
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'user' => $this->username,
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'pass' => $this->password,
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'host' => $this->host,
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'port' => $this->port,
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'path' => $this->getPath(),
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'query' => $query !== '' ? $query : null,
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'fragment' => $this->fragment,
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);
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}
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/**
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* Set the host of the request.
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*
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* @param string $host Host to set (e.g. www.yahoo.com, yahoo.com)
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*
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* @return Url
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*/
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public function setHost($host)
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{
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if (strpos($host, ':') === false) {
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$this->host = $host;
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} else {
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list($host, $port) = explode(':', $host);
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$this->host = $host;
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$this->setPort($port);
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}
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return $this;
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}
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/**
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* Get the host part of the URL
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*
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* @return string
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*/
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public function getHost()
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{
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return $this->host;
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}
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/**
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* Set the scheme part of the URL (http, https, ftp, etc)
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*
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* @param string $scheme Scheme to set
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*
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* @return Url
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*/
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public function setScheme($scheme)
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{
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if ($this->scheme == 'http' && $this->port == 80) {
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$this->port = null;
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} elseif ($this->scheme == 'https' && $this->port == 443) {
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$this->port = null;
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}
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$this->scheme = $scheme;
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return $this;
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}
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/**
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* Get the scheme part of the URL
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*
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* @return string
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*/
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public function getScheme()
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{
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return $this->scheme;
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}
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/**
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* Set the port part of the URL
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*
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* @param int $port Port to set
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*
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* @return Url
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*/
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public function setPort($port)
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{
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$this->port = $port;
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return $this;
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}
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/**
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* Get the port part of the URl. Will return the default port for a given scheme if no port has been set.
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*
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* @return int|null
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*/
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public function getPort()
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{
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if ($this->port) {
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return $this->port;
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} elseif ($this->scheme == 'http') {
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return 80;
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} elseif ($this->scheme == 'https') {
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return 443;
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}
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return null;
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}
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/**
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* Set the path part of the URL
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*
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* @param array|string $path Path string or array of path segments
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*
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* @return Url
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*/
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public function setPath($path)
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{
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static $pathReplace = array(' ' => '%20', '?' => '%3F');
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if (is_array($path)) {
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$path = '/' . implode('/', $path);
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}
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$this->path = strtr($path, $pathReplace);
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return $this;
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}
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/**
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* Normalize the URL so that double slashes and relative paths are removed
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*
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* @return Url
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*/
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public function normalizePath()
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{
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if (!$this->path || $this->path == '/' || $this->path == '*') {
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return $this;
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}
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$results = array();
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$segments = $this->getPathSegments();
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foreach ($segments as $segment) {
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if ($segment == '..') {
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array_pop($results);
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} elseif ($segment != '.' && $segment != '') {
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$results[] = $segment;
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}
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}
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// Combine the normalized parts and add the leading slash if needed
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$this->path = ($this->path[0] == '/' ? '/' : '') . implode('/', $results);
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// Add the trailing slash if necessary
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if ($this->path != '/' && end($segments) == '') {
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$this->path .= '/';
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}
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return $this;
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}
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/**
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* Add a relative path to the currently set path.
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*
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* @param string $relativePath Relative path to add
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*
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* @return Url
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*/
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public function addPath($relativePath)
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{
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if ($relativePath != '/' && is_string($relativePath) && strlen($relativePath) > 0) {
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// Add a leading slash if needed
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if ($relativePath[0] != '/') {
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$relativePath = '/' . $relativePath;
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}
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$this->setPath(str_replace('//', '/', $this->path . $relativePath));
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}
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return $this;
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}
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/**
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* Get the path part of the URL
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*
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* @return string
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*/
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public function getPath()
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{
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return $this->path;
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}
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/**
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* Get the path segments of the URL as an array
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*
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* @return array
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*/
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public function getPathSegments()
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{
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return array_slice(explode('/', $this->getPath()), 1);
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}
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/**
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* Set the password part of the URL
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*
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* @param string $password Password to set
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*
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* @return Url
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*/
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public function setPassword($password)
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{
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$this->password = $password;
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return $this;
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}
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/**
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* Get the password part of the URL
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*
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* @return null|string
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*/
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public function getPassword()
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{
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return $this->password;
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}
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/**
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* Set the username part of the URL
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*
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* @param string $username Username to set
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*
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* @return Url
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*/
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public function setUsername($username)
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{
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$this->username = $username;
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return $this;
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}
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/**
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* Get the username part of the URl
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*
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* @return null|string
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*/
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public function getUsername()
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{
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return $this->username;
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}
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/**
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* Get the query part of the URL as a QueryString object
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*
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* @return QueryString
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*/
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public function getQuery()
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{
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return $this->query;
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}
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/**
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* Set the query part of the URL
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*
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* @param QueryString|string|array $query Query to set
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*
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* @return Url
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*/
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public function setQuery($query)
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{
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if (is_string($query)) {
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$output = null;
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parse_str($query, $output);
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$this->query = new QueryString($output);
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} elseif (is_array($query)) {
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$this->query = new QueryString($query);
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} elseif ($query instanceof QueryString) {
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$this->query = $query;
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}
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return $this;
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}
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/**
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* Get the fragment part of the URL
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*
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* @return null|string
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*/
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public function getFragment()
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{
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return $this->fragment;
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}
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/**
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* Set the fragment part of the URL
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*
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* @param string $fragment Fragment to set
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*
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* @return Url
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*/
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public function setFragment($fragment)
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{
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$this->fragment = $fragment;
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return $this;
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}
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/**
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* Check if this is an absolute URL
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*
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* @return bool
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*/
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public function isAbsolute()
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{
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return $this->scheme && $this->host;
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}
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/**
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* Combine the URL with another URL. Follows the rules specific in RFC 3986 section 5.4.
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*
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* @param string $url Relative URL to combine with
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* @param bool $strictRfc3986 Set to true to use strict RFC 3986 compliance when merging paths. When first
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* released, Guzzle used an incorrect algorithm for combining relative URL paths. In
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* order to not break users, we introduced this flag to allow the merging of URLs based
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* on strict RFC 3986 section 5.4.1. This means that "http://a.com/foo/baz" merged with
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* "bar" would become "http://a.com/foo/bar". When this value is set to false, it would
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* become "http://a.com/foo/baz/bar".
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* @return Url
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* @throws InvalidArgumentException
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* @link http://tools.ietf.org/html/rfc3986#section-5.4
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*/
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public function combine($url, $strictRfc3986 = false)
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{
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$url = self::factory($url);
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// Use the more absolute URL as the base URL
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if (!$this->isAbsolute() && $url->isAbsolute()) {
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$url = $url->combine($this);
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}
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// Passing a URL with a scheme overrides everything
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if ($buffer = $url->getScheme()) {
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$this->scheme = $buffer;
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$this->host = $url->getHost();
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$this->port = $url->getPort();
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$this->username = $url->getUsername();
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$this->password = $url->getPassword();
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$this->path = $url->getPath();
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$this->query = $url->getQuery();
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$this->fragment = $url->getFragment();
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return $this;
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}
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// Setting a host overrides the entire rest of the URL
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if ($buffer = $url->getHost()) {
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$this->host = $buffer;
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$this->port = $url->getPort();
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$this->username = $url->getUsername();
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$this->password = $url->getPassword();
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$this->path = $url->getPath();
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$this->query = $url->getQuery();
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$this->fragment = $url->getFragment();
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return $this;
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}
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$path = $url->getPath();
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$query = $url->getQuery();
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if (!$path) {
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if (count($query)) {
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$this->addQuery($query, $strictRfc3986);
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}
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} else {
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if ($path[0] == '/') {
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$this->path = $path;
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} elseif ($strictRfc3986) {
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$this->path .= '/../' . $path;
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} else {
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$this->path .= '/' . $path;
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}
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$this->normalizePath();
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$this->addQuery($query, $strictRfc3986);
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}
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$this->fragment = $url->getFragment();
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return $this;
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}
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private function addQuery(QueryString $new, $strictRfc386)
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{
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if (!$strictRfc386) {
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$new->merge($this->query);
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}
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$this->query = $new;
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}
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}
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