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+<?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: Path.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.php';
+require_once 'Net/URL/Mapper/Part/Dynamic.php';
+require_once 'Net/URL/Mapper/Part/Wildcard.php';
+require_once 'Net/URL/Mapper/Part/Fixed.php';
+
+class Net_URL_Mapper_Path
+{
+ private $path = '';
+ private $N = 0;
+ public $token;
+ public $value;
+ private $line = 1;
+ private $state = 1;
+
+
+ protected $alias;
+ protected $rules = array();
+ protected $defaults = array();
+ protected $parts = array();
+ protected $rule;
+ protected $format;
+ protected $minKeys;
+ protected $maxKeys;
+ protected $fixed = true;
+ protected $required;
+
+ public function __construct($path = '', $defaults = array(), $rules = array())
+ {
+ $this->path = '/'.trim(Net_URL::resolvePath($path), '/');
+ $this->setDefaults($defaults);
+ $this->setRules($rules);
+
+ try {
+ $this->parsePath();
+ } catch (Exception $e) {
+ // The path could not be parsed correctly, treat it as fixed
+ $this->fixed = true;
+ $part = self::createPart(Net_URL_Mapper_Part::FIXED, $this->path, $this->path);
+ $this->parts = array($part);
+ }
+ $this->getRequired();
+ }
+
+ public function getPath()
+ {
+ return $this->path;
+ }
+
+ protected function parsePath()
+ {
+ while ($this->yylex()) { }
+ }
+
+ /**
+ * Get the path alias
+ * Path aliases can be used instead of full path
+ * @return null|string
+ */
+ public function getAlias()
+ {
+ return $this->alias;
+ }
+
+ /**
+ * Set the path name
+ * @param string Set the path name
+ * @see getAlias()
+ */
+ public function setAlias($alias)
+ {
+ $this->alias = $alias;
+ return $this;
+ }
+
+ /**
+ * Get the path parts default values
+ * @return null|array
+ */
+ public function getDefaults()
+ {
+ return $this->defaults;
+ }
+
+ /**
+ * Set the path parts default values
+ * @param array Associative array with format partname => value
+ */
+ public function setDefaults($defaults)
+ {
+ if (is_array($defaults)) {
+ $this->defaults = $defaults;
+ } else {
+ $this->defaults = array();
+ }
+ }
+
+ /**
+ * Set the path parts default values
+ * @param array Associative array with format partname => value
+ */
+ public function setRules($rules)
+ {
+ if (is_array($rules)) {
+ $this->rules = $rules;
+ } else {
+ $this->rules = array();
+ }
+ }
+
+ /**
+ * Returns the regular expression used to match this path
+ * @return string PERL Regular expression
+ */
+ public function getRule()
+ {
+ if (is_null($this->rule)) {
+ $this->rule = '/^';
+ foreach ($this->parts as $path => $part) {
+ $this->rule .= $part->getRule();
+ }
+ $this->rule .= '$/';
+ }
+ return $this->rule;
+ }
+
+ public function getFormat()
+ {
+ if (is_null($this->format)) {
+ $this->format = '/^';
+ foreach ($this->parts as $path => $part) {
+ $this->format .= $part->getFormat();
+ }
+ $this->format .= '$/';
+ }
+ return $this->format;
+ }
+
+ protected function addPart($part)
+ {
+ if (array_key_exists($part->content, $this->defaults)) {
+ $part->setRequired(false);
+ $part->setDefaults($this->defaults[$part->content]);
+ }
+ if (isset($this->rules[$part->content])) {
+ $part->setRule($this->rules[$part->content]);
+ }
+ $this->rule = null;
+ if ($part->getType() != Net_URL_Mapper_Part::FIXED) {
+ $this->fixed = false;
+ $this->parts[$part->content] = $part;
+ } else {
+ $this->parts[] = $part;
+ }
+ return $part;
+ }
+
+ public static function createPart($type, $content, $path)
+ {
+ switch ($type) {
+ case Net_URL_Mapper_Part::DYNAMIC:
+ return new Net_URL_Mapper_Part_Dynamic($content, $path);
+ break;
+ case Net_URL_Mapper_Part::WILDCARD:
+ return new Net_URL_Mapper_Part_Wildcard($content, $path);
+ break;
+ default:
+ return new Net_URL_Mapper_Part_Fixed($content, $path);
+ }
+ }
+
+ /**
+ * Checks whether the path contains the given part by name
+ * If value parameter is given, the part also checks if the
+ * given value conforms to the part rule.
+ * @param string Part name
+ * @param mixed The value to check against
+ */
+ public function hasKey($partName, $value = null)
+ {
+ if (array_key_exists($partName, $this->parts)) {
+ if (!is_null($value) && $value !== false) {
+ return $this->parts[$partName]->match($value);
+ } else {
+ return true;
+ }
+ } elseif (array_key_exists($partName, $this->defaults) &&
+ $value == $this->defaults[$partName]) {
+ return true;
+ }
+ return false;
+ }
+
+ public function generate($values = array(), $qstring = array(), $anchor = '')
+ {
+ $path = '';
+ foreach ($this->parts as $part) {
+ $path .= $part->generate($values);
+ }
+ $path = '/'.trim(Net_URL::resolvePath($path), '/');
+ if (!empty($qstring)) {
+ $path .= '?'.http_build_query($qstring);
+ }
+ if (!empty($anchor)) {
+ $path .= '#'.ltrim($anchor, '#');
+ }
+ return $path;
+ }
+
+ public function getRequired()
+ {
+ if (!isset($this->required)) {
+ $req = array();
+ foreach ($this->parts as $part) {
+ if ($part->isRequired()) {
+ $req[] = $part->content;
+ }
+ }
+ $this->required = $req;
+ }
+ return $this->required;
+ }
+
+ public function getMaxKeys()
+ {
+ if (is_null($this->maxKeys)) {
+ $this->maxKeys = count($this->required);
+ $this->maxKeys += count($this->defaults);
+ }
+ return $this->maxKeys;
+ }
+
+
+
+
+ private $_yy_state = 1;
+ private $_yy_stack = array();
+
+ function yylex()
+ {
+ return $this->{'yylex' . $this->_yy_state}();
+ }
+
+ function yypushstate($state)
+ {
+ array_push($this->_yy_stack, $this->_yy_state);
+ $this->_yy_state = $state;
+ }
+
+ function yypopstate()
+ {
+ $this->_yy_state = array_pop($this->_yy_stack);
+ }
+
+ function yybegin($state)
+ {
+ $this->_yy_state = $state;
+ }
+
+
+
+ function yylex1()
+ {
+ $tokenMap = array (
+ 1 => 1,
+ 3 => 1,
+ 5 => 1,
+ 7 => 1,
+ 9 => 1,
+ );
+ if ($this->N >= strlen($this->path)) {
+ return false; // end of input
+ }
+ $yy_global_pattern = "/^(\/?:\/?\\(([a-zA-Z0-9_]+)\\))|^(\/?\\*\/?\\(([a-zA-Z0-9_]+)\\))|^(\/?:([a-zA-Z0-9_]+))|^(\/?\\*([a-zA-Z0-9_]+))|^(\/?([^\/:*]+))/";
+
+ do {
+ if (preg_match($yy_global_pattern, substr($this->path, $this->N), $yymatches)) {
+ $yysubmatches = $yymatches;
+ $yymatches = array_filter($yymatches, 'strlen'); // remove empty sub-patterns
+ if (!count($yymatches)) {
+ throw new Exception('Error: lexing failed because a rule matched' .
+ 'an empty string. Input "' . substr($this->path,
+ $this->N, 5) . '... state START');
+ }
+ next($yymatches); // skip global match
+ $this->token = key($yymatches); // token number
+ if ($tokenMap[$this->token]) {
+ // extract sub-patterns for passing to lex function
+ $yysubmatches = array_slice($yysubmatches, $this->token + 1,
+ $tokenMap[$this->token]);
+ } else {
+ $yysubmatches = array();
+ }
+ $this->value = current($yymatches); // token value
+ $r = $this->{'yy_r1_' . $this->token}($yysubmatches);
+ if ($r === null) {
+ $this->N += strlen($this->value);
+ $this->line += substr_count("\n", $this->value);
+ // accept this token
+ return true;
+ } elseif ($r === true) {
+ // we have changed state
+ // process this token in the new state
+ return $this->yylex();
+ } elseif ($r === false) {
+ $this->N += strlen($this->value);
+ $this->line += substr_count("\n", $this->value);
+ if ($this->N >= strlen($this->path)) {
+ return false; // end of input
+ }
+ // skip this token
+ continue;
+ } else { $yy_yymore_patterns = array(
+ 1 => "^(\/?\\*\/?\\(([a-zA-Z0-9_]+)\\))|^(\/?:([a-zA-Z0-9_]+))|^(\/?\\*([a-zA-Z0-9_]+))|^(\/?([^\/:*]+))",
+ 3 => "^(\/?:([a-zA-Z0-9_]+))|^(\/?\\*([a-zA-Z0-9_]+))|^(\/?([^\/:*]+))",
+ 5 => "^(\/?\\*([a-zA-Z0-9_]+))|^(\/?([^\/:*]+))",
+ 7 => "^(\/?([^\/:*]+))",
+ 9 => "",
+ );
+
+ // yymore is needed
+ do {
+ if (!strlen($yy_yymore_patterns[$this->token])) {
+ throw new Exception('cannot do yymore for the last token');
+ }
+ if (preg_match($yy_yymore_patterns[$this->token],
+ substr($this->path, $this->N), $yymatches)) {
+ $yymatches = array_filter($yymatches, 'strlen'); // remove empty sub-patterns
+ next($yymatches); // skip global match
+ $this->token = key($yymatches); // token number
+ $this->value = current($yymatches); // token value
+ $this->line = substr_count("\n", $this->value);
+ }
+ } while ($this->{'yy_r1_' . $this->token}() !== null);
+ // accept
+ $this->N += strlen($this->value);
+ $this->line += substr_count("\n", $this->value);
+ return true;
+ }
+ } else {
+ throw new Exception('Unexpected input at line' . $this->line .
+ ': ' . $this->path[$this->N]);
+ }
+ break;
+ } while (true);
+ } // end function
+
+
+ const START = 1;
+ function yy_r1_1($yy_subpatterns)
+ {
+
+ $c = $yy_subpatterns[0];
+ $part = self::createPart(Net_URL_Mapper_Part::DYNAMIC, $c, $this->value);
+ $this->addPart($part);
+ }
+ function yy_r1_3($yy_subpatterns)
+ {
+
+ $c = $yy_subpatterns[0];
+ $part = self::createPart(Net_URL_Mapper_Part::WILDCARD, $c, $this->value);
+ $this->addPart($part);
+ }
+ function yy_r1_5($yy_subpatterns)
+ {
+
+ $c = $yy_subpatterns[0];
+ $part = self::createPart(Net_URL_Mapper_Part::DYNAMIC, $c, $this->value);
+ $this->addPart($part);
+ }
+ function yy_r1_7($yy_subpatterns)
+ {
+
+ $c = $yy_subpatterns[0];
+ $part = self::createPart(Net_URL_Mapper_Part::WILDCARD, $c, $this->value);
+ $this->addPart($part);
+ }
+ function yy_r1_9($yy_subpatterns)
+ {
+
+ $c = $yy_subpatterns[0];
+ $part = self::createPart(Net_URL_Mapper_Part::FIXED, $c, $this->value);
+ $this->addPart($part);
+ }
+
+}
+
+?> \ No newline at end of file
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