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Diffstat (limited to 'extlib/Net/URL/Mapper.php')
| -rw-r--r-- | extlib/Net/URL/Mapper.php | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/extlib/Net/URL/Mapper.php b/extlib/Net/URL/Mapper.php new file mode 100644 index 000000000..65e38818b --- /dev/null +++ b/extlib/Net/URL/Mapper.php @@ -0,0 +1,324 @@ +<?php +/** + * URL parser and mapper + * + * PHP version 5 + * + * LICENSE: + * + * Copyright (c) 2006, Bertrand Mansion <golgote@mamasam.com> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * The names of the authors may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * @category Net + * @package Net_URL_Mapper + * @author Bertrand Mansion <golgote@mamasam.com> + * @license http://opensource.org/licenses/bsd-license.php New BSD License + * @version CVS: $Id: Mapper.php,v 1.1 2007/03/28 10:23:04 mansion Exp $ + * @link http://pear.php.net/package/Net_URL_Mapper + */ + +require_once 'Net/URL/Mapper/Path.php'; +require_once 'Net/URL/Mapper/Exception.php'; + +/** + * URL parser and mapper class + * + * This class takes an URL and a configuration and returns formatted data + * about the request according to a configuration parameter + * + * @category Net + * @package Net_URL_Mapper + * @author Bertrand Mansion <golgote@mamasam.com> + * @version Release: @package_version@ + */ +class Net_URL_Mapper +{ + /** + * Array of Net_URL_Mapper instances + * @var array + */ + private static $instances = array(); + + /** + * Mapped paths collection + * @var array + */ + protected $paths = array(); + + /** + * Prefix used for url mapping + * @var string + */ + protected $prefix = ''; + + /** + * Optional scriptname if mod_rewrite is not available + * @var string + */ + protected $scriptname = ''; + + /** + * Mapper instance id + * @var string + */ + protected $id = '__default__'; + + /** + * Class constructor + * Constructor is private, you should use getInstance() instead. + */ + private function __construct() { } + + /** + * Returns a singleton object corresponding to the requested instance id + * @param string Requested instance name + * @return Object Net_URL_Mapper Singleton + */ + public static function getInstance($id = '__default__') + { + if (!isset(self::$instances[$id])) { + $m = new Net_URL_Mapper(); + $m->id = $id; + self::$instances[$id] = $m; + } + return self::$instances[$id]; + } + + /** + * Returns the instance id + * @return string Mapper instance id + */ + public function getId() + { + return $this->id; + } + + /** + * Parses a path and creates a connection + * @param string The path to connect + * @param array Default values for path parts + * @param array Regular expressions for path parts + * @return object Net_URL_Mapper_Path + */ + public function connect($path, $defaults = array(), $rules = array()) + { + $pathObj = new Net_URL_Mapper_Path($path, $defaults, $rules); + $this->addPath($pathObj); + return $pathObj; + } + + /** + * Set the url prefix if needed + * + * Example: using the prefix to differenciate mapper instances + * <code> + * $fr = Net_URL_Mapper::getInstance('fr'); + * $fr->setPrefix('/fr'); + * $en = Net_URL_Mapper::getInstance('en'); + * $en->setPrefix('/en'); + * </code> + * + * @param string URL prefix + */ + public function setPrefix($prefix) + { + $this->prefix = '/'.trim($prefix, '/'); + } + + /** + * Set the scriptname if mod_rewrite not available + * + * Example: will match and generate url like + * - index.php/view/product/1 + * <code> + * $m = Net_URL_Mapper::getInstance(); + * $m->setScriptname('index.php'); + * </code> + * @param string URL prefix + */ + public function setScriptname($scriptname) + { + $this->scriptname = $scriptname; + } + + /** + * Will attempt to match an url with a defined path + * + * If an url corresponds to a path, the resulting values are returned + * in an array. If none is found, null is returned. In case an url is + * matched but its content doesn't validate the path rules, an exception is + * thrown. + * + * @param string URL + * @return array|null array if match found, null otherwise + * @throws Net_URL_Mapper_InvalidException + */ + public function match($url) + { + $nurl = '/'.trim($url, '/'); + + // Remove scriptname if needed + + if (!empty($this->scriptname) && + strpos($nurl, $this->scriptname) === 0) { + $nurl = substr($nurl, strlen($this->scriptname)); + if (empty($nurl)) { + $nurl = '/'; + } + } + + // Remove prefix + + if (!empty($this->prefix)) { + if (strpos($nurl, $this->prefix) !== 0) { + return null; + } + $nurl = substr($nurl, strlen($this->prefix)); + if (empty($nurl)) { + $nurl = '/'; + } + } + + // Remove query string + + if (($pos = strpos($nurl, '?')) !== false) { + $nurl = substr($nurl, 0, $pos); + } + + $paths = array(); + $values = null; + + // Make a list of paths that conform to route format + + foreach ($this->paths as $path) { + $regex = $path->getFormat(); + if (preg_match($regex, $nurl)) { + $paths[] = $path; + } + } + + // Make sure one of the paths found is valid + + foreach ($paths as $path) { + $regex = $path->getRule(); + if (preg_match($regex, $nurl, $matches)) { + $values = $path->getDefaults(); + array_shift($matches); + $clean = array(); + foreach ($matches as $k => $v) { + $v = trim($v, '/'); + if (!is_int($k) && $v !== '') { + $values[$k] = $v; + } + } + break; + } + } + + // A path conforms but does not validate + + if (is_null($values) && !empty($paths)) { + $e = new Net_URL_Mapper_InvalidException('A path was found but is invalid.'); + $e->setPath($paths[0]); + $e->setUrl($url); + throw $e; + } + + return $values; + } + + /** + * Generate an url based on given parameters + * + * Will attempt to find a path definition that matches the given parameters and + * will generate an url based on this path. + * + * @param array Values to be used for the url generation + * @param array Key/value pairs for query string if needed + * @param string Anchor (fragment) if needed + * @return string|false String if a rule was found, false otherwise + */ + public function generate($values = array(), $qstring = array(), $anchor = '') + { + // Use root path if any + + if (empty($values) && isset($this->paths['/'])) { + return $this->scriptname.$this->prefix.$this->paths['/']->generate($values, $qstring, $anchor); + } + + foreach ($this->paths as $path) { + $set = array(); + foreach ($values as $k => $v) { + if ($path->hasKey($k, $v)) { + $set[$k] = $v; + } + } + + if (count($set) == count($values) && + count($set) <= $path->getMaxKeys()) { + + $req = $path->getRequired(); + if (count(array_intersect(array_keys($set), $req)) != count($req)) { + continue; + } + $gen = $path->generate($set, $qstring, $anchor); + return $this->scriptname.$this->prefix.$gen; + } + } + return false; + } + + /** + * Returns defined paths + * @return array Array of paths + */ + public function getPaths() + { + return $this->paths; + } + + /** + * Reset all paths + * This is probably only useful for testing + */ + public function reset() + { + $this->paths = array(); + $this->prefix = ''; + } + + /** + * Add a new path to the mapper + * @param object Net_URL_Mapper_Path object + */ + public function addPath(Net_URL_Mapper_Path $path) + { + $this->paths[$path->getPath()] = $path; + } + +} +?>
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