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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @package Zend_Controller
* @subpackage Router
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @version $Id: Route.php 11073 2008-08-26 16:29:59Z dasprid $
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/** Zend_Controller_Router_Route_Abstract */
require_once 'Zend/Controller/Router/Route/Abstract.php';
/**
* Route
*
* @package Zend_Controller
* @subpackage Router
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @see http://manuals.rubyonrails.com/read/chapter/65
*/
class Zend_Controller_Router_Route extends Zend_Controller_Router_Route_Abstract
{
protected $_urlVariable = ':';
protected $_urlDelimiter = '/';
protected $_regexDelimiter = '#';
protected $_defaultRegex = null;
/**
* Holds names of all route's pattern variable names. Array index holds a position in URL.
* @var array
*/
protected $_variables = array();
/**
* Holds Route patterns for all URL parts. In case of a variable it stores it's regex
* requirement or null. In case of a static part, it holds only it's direct value.
* In case of a wildcard, it stores an asterisk (*)
* @var array
*/
protected $_parts = array();
/**
* Holds user submitted default values for route's variables. Name and value pairs.
* @var array
*/
protected $_defaults = array();
/**
* Holds user submitted regular expression patterns for route's variables' values.
* Name and value pairs.
* @var array
*/
protected $_requirements = array();
/**
* Associative array filled on match() that holds matched path values
* for given variable names.
* @var array
*/
protected $_values = array();
/**
* Associative array filled on match() that holds wildcard variable
* names and values.
* @var array
*/
protected $_wildcardData = array();
/**
* Helper var that holds a count of route pattern's static parts
* for validation
* @var int
*/
protected $_staticCount = 0;
public function getVersion() {
return 1;
}
/**
* Instantiates route based on passed Zend_Config structure
*
* @param Zend_Config $config Configuration object
*/
public static function getInstance(Zend_Config $config)
{
$reqs = ($config->reqs instanceof Zend_Config) ? $config->reqs->toArray() : array();
$defs = ($config->defaults instanceof Zend_Config) ? $config->defaults->toArray() : array();
return new self($config->route, $defs, $reqs);
}
/**
* Prepares the route for mapping by splitting (exploding) it
* to a corresponding atomic parts. These parts are assigned
* a position which is later used for matching and preparing values.
*
* @param string $route Map used to match with later submitted URL path
* @param array $defaults Defaults for map variables with keys as variable names
* @param array $reqs Regular expression requirements for variables (keys as variable names)
*/
public function __construct($route, $defaults = array(), $reqs = array())
{
$route = trim($route, $this->_urlDelimiter);
$this->_defaults = (array) $defaults;
$this->_requirements = (array) $reqs;
if ($route != '') {
foreach (explode($this->_urlDelimiter, $route) as $pos => $part) {
if (substr($part, 0, 1) == $this->_urlVariable) {
$name = substr($part, 1);
$this->_parts[$pos] = (isset($reqs[$name]) ? $reqs[$name] : $this->_defaultRegex);
$this->_variables[$pos] = $name;
} else {
$this->_parts[$pos] = $part;
if ($part != '*') $this->_staticCount++;
}
}
}
}
/**
* Matches a user submitted path with parts defined by a map. Assigns and
* returns an array of variables on a successful match.
*
* @param string $path Path used to match against this routing map
* @return array|false An array of assigned values or a false on a mismatch
*/
public function match($path)
{
$pathStaticCount = 0;
$values = array();
$path = trim($path, $this->_urlDelimiter);
if ($path != '') {
$path = explode($this->_urlDelimiter, $path);
foreach ($path as $pos => $pathPart) {
// Path is longer than a route, it's not a match
if (!array_key_exists($pos, $this->_parts)) {
return false;
}
// If it's a wildcard, get the rest of URL as wildcard data and stop matching
if ($this->_parts[$pos] == '*') {
$count = count($path);
for($i = $pos; $i < $count; $i+=2) {
$var = urldecode($path[$i]);
if (!isset($this->_wildcardData[$var]) && !isset($this->_defaults[$var]) && !isset($values[$var])) {
$this->_wildcardData[$var] = (isset($path[$i+1])) ? urldecode($path[$i+1]) : null;
}
}
break;
}
$name = isset($this->_variables[$pos]) ? $this->_variables[$pos] : null;
$pathPart = urldecode($pathPart);
// If it's a static part, match directly
if ($name === null && $this->_parts[$pos] != $pathPart) {
return false;
}
// If it's a variable with requirement, match a regex. If not - everything matches
if ($this->_parts[$pos] !== null && !preg_match($this->_regexDelimiter . '^' . $this->_parts[$pos] . '$' . $this->_regexDelimiter . 'iu', $pathPart)) {
return false;
}
// If it's a variable store it's value for later
if ($name !== null) {
$values[$name] = $pathPart;
} else {
$pathStaticCount++;
}
}
}
// Check if all static mappings have been matched
if ($this->_staticCount != $pathStaticCount) {
return false;
}
$return = $values + $this->_wildcardData + $this->_defaults;
// Check if all map variables have been initialized
foreach ($this->_variables as $var) {
if (!array_key_exists($var, $return)) {
return false;
}
}
$this->_values = $values;
return $return;
}
/**
* Assembles user submitted parameters forming a URL path defined by this route
*
* @param array $data An array of variable and value pairs used as parameters
* @param boolean $reset Whether or not to set route defaults with those provided in $data
* @return string Route path with user submitted parameters
*/
public function assemble($data = array(), $reset = false, $encode = false)
{
$url = array();
$flag = false;
foreach ($this->_parts as $key => $part) {
$name = isset($this->_variables[$key]) ? $this->_variables[$key] : null;
$useDefault = false;
if (isset($name) && array_key_exists($name, $data) && $data[$name] === null) {
$useDefault = true;
}
if (isset($name)) {
if (isset($data[$name]) && !$useDefault) {
$url[$key] = $data[$name];
unset($data[$name]);
} elseif (!$reset && !$useDefault && isset($this->_values[$name])) {
$url[$key] = $this->_values[$name];
} elseif (!$reset && !$useDefault && isset($this->_wildcardData[$name])) {
$url[$key] = $this->_wildcardData[$name];
} elseif (isset($this->_defaults[$name])) {
$url[$key] = $this->_defaults[$name];
} else {
require_once 'Zend/Controller/Router/Exception.php';
throw new Zend_Controller_Router_Exception($name . ' is not specified');
}
} elseif ($part != '*') {
$url[$key] = $part;
} else {
if (!$reset) $data += $this->_wildcardData;
foreach ($data as $var => $value) {
if ($value !== null) {
$url[$key++] = $var;
$url[$key++] = $value;
$flag = true;
}
}
}
}
$return = '';
foreach (array_reverse($url, true) as $key => $value) {
if ($flag || !isset($this->_variables[$key]) || $value !== $this->getDefault($this->_variables[$key])) {
if ($encode) $value = urlencode($value);
$return = $this->_urlDelimiter . $value . $return;
$flag = true;
}
}
return trim($return, $this->_urlDelimiter);
}
/**
* Return a single parameter of route's defaults
*
* @param string $name Array key of the parameter
* @return string Previously set default
*/
public function getDefault($name) {
if (isset($this->_defaults[$name])) {
return $this->_defaults[$name];
}
return null;
}
/**
* Return an array of defaults
*
* @return array Route defaults
*/
public function getDefaults() {
return $this->_defaults;
}
}