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<?php |
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/* |
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* This file is part of the Ariadne Component Library. |
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* |
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* (c) Muze <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace arc\url; |
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/** |
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* Url parses a URL string and returns an object with the seperate parts. You can change |
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* these and when cast to a string Url will regenerate the URL string and make sure it |
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* is valid. |
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* |
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* Usage: |
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* $url = new \arc\url\Url( 'http://www.ariadne-cms.org/' ); |
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* $url->path = '/docs/search/'; |
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* $url->query = 'a=1&a=2'; |
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* echo $url; // => 'http://www.ariadne-cms.org/docs/search/?a=1&a=2' |
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*/ |
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class Url |
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{ |
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/** |
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* All parts of the URL format, as returned by parse_url. |
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* scheme://user:pass@host:port/path?query#fragment |
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*/ |
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public $scheme, $user, $pass, $host, $port, $path, $fragment; |
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private $query; |
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/** |
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* @param string $url The URL to parse, the query part will remain a string. |
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* @param QueryInterface queryObject Optional. An object that parses the query string. |
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*/ |
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public function __construct($url, $queryObject = null) |
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{ |
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$componentList = [ |
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'scheme', 'host', 'port', 'user', 'pass', 'path', 'query', 'fragment' |
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]; |
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$this->importUrlComponents( parse_url( $url ), $componentList ); |
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if ( isset( $queryObject ) ) { |
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$this->query = $queryObject->import( $this->query ); |
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} |
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} |
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/** |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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switch ($this->scheme) { |
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case 'file': |
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return $this->getScheme() . '//' . $this->host . $this->getFilePath(); |
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break; |
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case 'mailto': |
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case 'news': |
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return ( $this->path ? $this->getScheme() . $this->getPath() : '' ); |
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break; |
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case 'ldap': |
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return $this->getSchemeAndAuthority() . $this->getPath() . $this->getLdapQuery(); |
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break; |
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default: |
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return $this->getSchemeAndAuthority() . $this->getPath() . $this->getQuery() . $this->getFragment(); |
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break; |
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} |
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} |
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/** |
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* @param $name |
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* @return mixed |
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*/ |
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public function __get($name) |
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{ |
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switch ( (string) $name ) { |
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case 'password': |
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return $this->pass; |
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break; |
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case 'query': |
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return $this->query; |
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break; |
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} |
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} |
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/** |
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* @param $name |
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* @param $value |
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*/ |
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public function __set($name, $value) |
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{ |
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switch ( (string) $name ) { |
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case 'password': |
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$this->pass = $value; |
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break; |
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case 'query': |
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if ( is_object( $this->query ) ) { |
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$this->query->reset()->import( $value ); |
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} else { |
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$this->query = $value; |
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} |
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break; |
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} |
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} |
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/** |
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* |
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*/ |
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public function __clone() |
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{ |
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if ( is_object( $this->query ) ) { |
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$this->query = clone $this->query; |
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} |
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} |
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/** |
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* @param $components |
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* @param $validComponents |
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*/ |
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private function importUrlComponents($components, $validComponents) |
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{ |
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array_walk( $validComponents, function ($componentName) use ($components) { |
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$this->{$componentName} = ( isset( $components[$componentName] ) ? $components[$componentName] : '' ); |
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} ); |
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} |
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/** |
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* @return string |
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*/ |
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private function getSchemeAndAuthority() |
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{ |
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// note: both '//google.com/' and 'file:///C:/' are valid URL's - so if either a scheme or host is set, add the // part |
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return ( ( $this->scheme || $this->host ) ? $this->getScheme() . $this->getAuthority() : '' ); |
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} |
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/** |
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* @return string |
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*/ |
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private function getScheme() |
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{ |
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return ( $this->scheme ? $this->scheme . ':' : '' ); |
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} |
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/** |
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* @return string |
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*/ |
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private function getAuthority() |
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{ |
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return ( $this->host ? '//' . $this->getUser() . $this->host . $this->getPort() : '' ); |
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} |
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/** |
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* @return string |
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*/ |
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private function getUser() |
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{ |
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return ( $this->user ? rawurlencode( $this->user ) . $this->getPassword() . '@' : '' ); |
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} |
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/** |
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* @return string |
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*/ |
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private function getPassword() |
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{ |
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return ( $this->user && $this->pass ? ':' . rawurlencode( $this->pass ) : '' ); |
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} |
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/** |
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* @return string |
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*/ |
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private function getPort() |
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{ |
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return ( $this->port ? ':' . (int) $this->port : '' ); |
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} |
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/** |
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* @return mixed|string |
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*/ |
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private function getPath() |
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{ |
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if (!$this->path) { |
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return ''; |
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} |
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$path = $this->path; |
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if ( $this->host && ( !$path || $path[0] !== '/' ) ) { |
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// note: if a host is set, the path _must_ be made absolute or the URL will be invalid |
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$path = '/' . $path; |
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} |
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// urlencode encodes too many characters for the path part, so we decode them back to get readable urls. |
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return str_replace( [ '%3D', '%2B', '%3A', '%40' ], [ '=', '+', ':', '@' ], join( '/', array_map( 'urlencode', explode( '/', $path ) ) ) ); |
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} |
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/** |
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* @return mixed|string |
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*/ |
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private function getFilePath() |
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{ |
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// in the file: scheme, a path must start with a '/' even if no host is set. This contradicts with the email: scheme. |
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$path = $this->getPath(); |
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if ($path && $path[0]!=='/') { |
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$path = '/' . $path; |
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} |
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return $path; |
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} |
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/** |
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* @return string |
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*/ |
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private function getQuery() |
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{ |
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// queries are assumed to handle themselves, so no encoding here. |
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$query = (string) $this->query; // convert explicitly to string first, because the query object may exist but still return an empty string |
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return ( $query ? '?' . $query : '' ); |
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} |
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/** |
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* @return string |
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*/ |
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private function getLdapQuery() |
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{ |
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// ldap queries may contain multiple ? tokens - so these are unencoded here. |
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$query = (string) $this->query; // convert explicitly to string first, because the query object may exist but still return an empty string |
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return ( $query ? '?' . str_replace( '%3F', '?', $query ) : '' ); |
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} |
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/** |
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* @return string |
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*/ |
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private function getFragment() |
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{ |
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return ( $this->fragment ? '#' . urlencode($this->fragment) : '' ); |
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} |
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} |
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