root / drupal7 / sites / all / libraries / simplepie / library / SimplePie / IRI.php @ 41cc1b08
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<?php
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/**
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* SimplePie
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*
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* A PHP-Based RSS and Atom Feed Framework.
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* Takes the hard work out of managing a complete RSS/Atom solution.
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*
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* Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are
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* permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* * Neither the name of the SimplePie Team nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
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* AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* @package SimplePie
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* @version 1.3.1
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* @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
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* @author Ryan Parman
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* @author Geoffrey Sneddon
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* @author Ryan McCue
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* @link http://simplepie.org/ SimplePie
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License
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*/
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/**
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* IRI parser/serialiser/normaliser
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*
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* @package SimplePie
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* @subpackage HTTP
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* @author Geoffrey Sneddon
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* @author Steve Minutillo
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* @author Ryan McCue
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* @copyright 2007-2012 Geoffrey Sneddon, Steve Minutillo, Ryan McCue
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* @license http://www.opensource.org/licenses/bsd-license.php
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*/
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class SimplePie_IRI |
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{
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/**
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* Scheme
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*
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* @var string
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*/
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protected $scheme = null; |
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/**
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* User Information
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*
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* @var string
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*/
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protected $iuserinfo = null; |
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/**
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* ihost
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*
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* @var string
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*/
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protected $ihost = null; |
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|
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/**
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* Port
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*
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* @var string
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*/
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protected $port = null; |
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/**
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* ipath
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*
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* @var string
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*/
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protected $ipath = ''; |
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/**
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* iquery
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*
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* @var string
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*/
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protected $iquery = null; |
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/**
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* ifragment
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*
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* @var string
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*/
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protected $ifragment = null; |
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|
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/**
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* Normalization database
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*
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* Each key is the scheme, each value is an array with each key as the IRI
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* part and value as the default value for that part.
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*/
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protected $normalization = array( |
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'acap' => array( |
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'port' => 674 |
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), |
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'dict' => array( |
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'port' => 2628 |
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), |
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'file' => array( |
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'ihost' => 'localhost' |
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), |
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'http' => array( |
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'port' => 80, |
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'ipath' => '/' |
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), |
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'https' => array( |
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'port' => 443, |
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'ipath' => '/' |
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), |
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); |
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/**
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* Return the entire IRI when you try and read the object as a 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 $this->get_iri(); |
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} |
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/**
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* Overload __set() to provide access via properties
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*
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* @param string $name Property name
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* @param mixed $value Property value
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*/
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public function __set($name, $value) |
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{
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if (method_exists($this, 'set_' . $name)) |
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{
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call_user_func(array($this, 'set_' . $name), $value); |
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} |
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elseif (
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$name === 'iauthority' |
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|| $name === 'iuserinfo' |
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|| $name === 'ihost' |
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|| $name === 'ipath' |
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|| $name === 'iquery' |
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|| $name === 'ifragment' |
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) |
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{
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call_user_func(array($this, 'set_' . substr($name, 1)), $value); |
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} |
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} |
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/**
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* Overload __get() to provide access via properties
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*
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* @param string $name Property name
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* @return mixed
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*/
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public function __get($name) |
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{
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// isset() returns false for null, we don't want to do that
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// Also why we use array_key_exists below instead of isset()
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$props = get_object_vars($this); |
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if (
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$name === 'iri' || |
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$name === 'uri' || |
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$name === 'iauthority' || |
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$name === 'authority' |
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) |
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{
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$return = $this->{"get_$name"}(); |
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} |
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elseif (array_key_exists($name, $props)) |
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{
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$return = $this->$name; |
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} |
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// host -> ihost
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elseif (($prop = 'i' . $name) && array_key_exists($prop, $props)) |
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{
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$name = $prop; |
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$return = $this->$prop; |
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} |
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// ischeme -> scheme
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elseif (($prop = substr($name, 1)) && array_key_exists($prop, $props)) |
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{
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$name = $prop; |
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$return = $this->$prop; |
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} |
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else
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{
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trigger_error('Undefined property: ' . get_class($this) . '::' . $name, E_USER_NOTICE); |
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$return = null; |
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} |
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if ($return === null && isset($this->normalization[$this->scheme][$name])) |
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{
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return $this->normalization[$this->scheme][$name]; |
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} |
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else
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{
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return $return; |
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} |
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} |
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/**
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* Overload __isset() to provide access via properties
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*
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* @param string $name Property name
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* @return bool
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*/
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public function __isset($name) |
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{
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if (method_exists($this, 'get_' . $name) || isset($this->$name)) |
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{
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return true; |
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} |
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else
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{
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return false; |
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} |
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} |
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/**
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* Overload __unset() to provide access via properties
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*
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* @param string $name Property name
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*/
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public function __unset($name) |
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{
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if (method_exists($this, 'set_' . $name)) |
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{
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call_user_func(array($this, 'set_' . $name), ''); |
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} |
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} |
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|
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/**
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* Create a new IRI object, from a specified string
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*
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* @param string $iri
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*/
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public function __construct($iri = null) |
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{
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$this->set_iri($iri); |
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} |
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|
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/**
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* Create a new IRI object by resolving a relative IRI
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*
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* Returns false if $base is not absolute, otherwise an IRI.
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*
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* @param IRI|string $base (Absolute) Base IRI
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* @param IRI|string $relative Relative IRI
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* @return IRI|false
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*/
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public static function absolutize($base, $relative) |
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{
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if (!($relative instanceof SimplePie_IRI)) |
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{
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$relative = new SimplePie_IRI($relative); |
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} |
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if (!$relative->is_valid()) |
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{
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return false; |
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} |
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elseif ($relative->scheme !== null) |
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{
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return clone $relative; |
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} |
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else
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{
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if (!($base instanceof SimplePie_IRI)) |
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{
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$base = new SimplePie_IRI($base); |
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} |
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if ($base->scheme !== null && $base->is_valid()) |
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{
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if ($relative->get_iri() !== '') |
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{
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if ($relative->iuserinfo !== null || $relative->ihost !== null || $relative->port !== null) |
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{
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$target = clone $relative; |
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$target->scheme = $base->scheme; |
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} |
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else
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{
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$target = new SimplePie_IRI; |
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$target->scheme = $base->scheme; |
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$target->iuserinfo = $base->iuserinfo; |
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$target->ihost = $base->ihost; |
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$target->port = $base->port; |
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if ($relative->ipath !== '') |
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{
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if ($relative->ipath[0] === '/') |
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{
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$target->ipath = $relative->ipath; |
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} |
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elseif (($base->iuserinfo !== null || $base->ihost !== null || $base->port !== null) && $base->ipath === '') |
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{
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$target->ipath = '/' . $relative->ipath; |
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} |
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elseif (($last_segment = strrpos($base->ipath, '/')) !== false) |
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{
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$target->ipath = substr($base->ipath, 0, $last_segment + 1) . $relative->ipath; |
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} |
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else
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{
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$target->ipath = $relative->ipath; |
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} |
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$target->ipath = $target->remove_dot_segments($target->ipath); |
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$target->iquery = $relative->iquery; |
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} |
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else
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{
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$target->ipath = $base->ipath; |
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if ($relative->iquery !== null) |
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{
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$target->iquery = $relative->iquery; |
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} |
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elseif ($base->iquery !== null) |
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{
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$target->iquery = $base->iquery; |
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} |
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} |
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$target->ifragment = $relative->ifragment; |
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} |
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} |
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else
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{
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$target = clone $base; |
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$target->ifragment = null; |
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} |
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$target->scheme_normalization();
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return $target; |
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} |
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else
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{
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return false; |
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} |
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} |
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} |
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|
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/**
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* Parse an IRI into scheme/authority/path/query/fragment segments
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*
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* @param string $iri
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* @return array
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*/
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protected function parse_iri($iri) |
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{
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$iri = trim($iri, "\x20\x09\x0A\x0C\x0D"); |
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if (preg_match('/^((?P<scheme>[^:\/?#]+):)?(\/\/(?P<authority>[^\/?#]*))?(?P<path>[^?#]*)(\?(?P<query>[^#]*))?(#(?P<fragment>.*))?$/', $iri, $match)) |
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{
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if ($match[1] === '') |
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{
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$match['scheme'] = null; |
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} |
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if (!isset($match[3]) || $match[3] === '') |
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{
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$match['authority'] = null; |
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} |
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if (!isset($match[5])) |
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{
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$match['path'] = ''; |
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} |
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if (!isset($match[6]) || $match[6] === '') |
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{
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$match['query'] = null; |
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} |
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if (!isset($match[8]) || $match[8] === '') |
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{
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$match['fragment'] = null; |
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} |
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return $match; |
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} |
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else
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{
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// This can occur when a paragraph is accidentally parsed as a URI
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return false; |
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} |
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} |
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|
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/**
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* Remove dot segments from a path
|
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*
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* @param string $input
|
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* @return string
|
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*/
|
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protected function remove_dot_segments($input) |
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{
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$output = ''; |
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while (strpos($input, './') !== false || strpos($input, '/.') !== false || $input === '.' || $input === '..') |
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{
|
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// A: If the input buffer begins with a prefix of "../" or "./", then remove that prefix from the input buffer; otherwise,
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if (strpos($input, '../') === 0) |
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{
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$input = substr($input, 3); |
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} |
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elseif (strpos($input, './') === 0) |
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{
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$input = substr($input, 2); |
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} |
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// B: if the input buffer begins with a prefix of "/./" or "/.", where "." is a complete path segment, then replace that prefix with "/" in the input buffer; otherwise,
|
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elseif (strpos($input, '/./') === 0) |
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{
|
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$input = substr($input, 2); |
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} |
| 423 |
elseif ($input === '/.') |
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{
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$input = '/'; |
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} |
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// C: if the input buffer begins with a prefix of "/../" or "/..", where ".." is a complete path segment, then replace that prefix with "/" in the input buffer and remove the last segment and its preceding "/" (if any) from the output buffer; otherwise,
|
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elseif (strpos($input, '/../') === 0) |
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{
|
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$input = substr($input, 3); |
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$output = substr_replace($output, '', strrpos($output, '/')); |
| 432 |
} |
| 433 |
elseif ($input === '/..') |
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{
|
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$input = '/'; |
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$output = substr_replace($output, '', strrpos($output, '/')); |
| 437 |
} |
| 438 |
// D: if the input buffer consists only of "." or "..", then remove that from the input buffer; otherwise,
|
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elseif ($input === '.' || $input === '..') |
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{
|
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$input = ''; |
| 442 |
} |
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// E: move the first path segment in the input buffer to the end of the output buffer, including the initial "/" character (if any) and any subsequent characters up to, but not including, the next "/" character or the end of the input buffer
|
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elseif (($pos = strpos($input, '/', 1)) !== false) |
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{
|
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$output .= substr($input, 0, $pos); |
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$input = substr_replace($input, '', 0, $pos); |
| 448 |
} |
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else
|
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{
|
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$output .= $input; |
| 452 |
$input = ''; |
| 453 |
} |
| 454 |
} |
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return $output . $input; |
| 456 |
} |
| 457 |
|
| 458 |
/**
|
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* Replace invalid character with percent encoding
|
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*
|
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* @param string $string Input string
|
| 462 |
* @param string $extra_chars Valid characters not in iunreserved or
|
| 463 |
* iprivate (this is ASCII-only)
|
| 464 |
* @param bool $iprivate Allow iprivate
|
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* @return string
|
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*/
|
| 467 |
protected function replace_invalid_with_pct_encoding($string, $extra_chars, $iprivate = false) |
| 468 |
{
|
| 469 |
// Normalize as many pct-encoded sections as possible
|
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$string = preg_replace_callback('/(?:%[A-Fa-f0-9]{2})+/', array($this, 'remove_iunreserved_percent_encoded'), $string); |
| 471 |
|
| 472 |
// Replace invalid percent characters
|
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$string = preg_replace('/%(?![A-Fa-f0-9]{2})/', '%25', $string); |
| 474 |
|
| 475 |
// Add unreserved and % to $extra_chars (the latter is safe because all
|
| 476 |
// pct-encoded sections are now valid).
|
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$extra_chars .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~%'; |
| 478 |
|
| 479 |
// Now replace any bytes that aren't allowed with their pct-encoded versions
|
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$position = 0; |
| 481 |
$strlen = strlen($string); |
| 482 |
while (($position += strspn($string, $extra_chars, $position)) < $strlen) |
| 483 |
{
|
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$value = ord($string[$position]); |
| 485 |
|
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// Start position
|
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$start = $position; |
| 488 |
|
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// By default we are valid
|
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$valid = true; |
| 491 |
|
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// No one byte sequences are valid due to the while.
|
| 493 |
// Two byte sequence:
|
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if (($value & 0xE0) === 0xC0) |
| 495 |
{
|
| 496 |
$character = ($value & 0x1F) << 6; |
| 497 |
$length = 2; |
| 498 |
$remaining = 1; |
| 499 |
} |
| 500 |
// Three byte sequence:
|
| 501 |
elseif (($value & 0xF0) === 0xE0) |
| 502 |
{
|
| 503 |
$character = ($value & 0x0F) << 12; |
| 504 |
$length = 3; |
| 505 |
$remaining = 2; |
| 506 |
} |
| 507 |
// Four byte sequence:
|
| 508 |
elseif (($value & 0xF8) === 0xF0) |
| 509 |
{
|
| 510 |
$character = ($value & 0x07) << 18; |
| 511 |
$length = 4; |
| 512 |
$remaining = 3; |
| 513 |
} |
| 514 |
// Invalid byte:
|
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else
|
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{
|
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$valid = false; |
| 518 |
$length = 1; |
| 519 |
$remaining = 0; |
| 520 |
} |
| 521 |
|
| 522 |
if ($remaining) |
| 523 |
{
|
| 524 |
if ($position + $length <= $strlen) |
| 525 |
{
|
| 526 |
for ($position++; $remaining; $position++) |
| 527 |
{
|
| 528 |
$value = ord($string[$position]); |
| 529 |
|
| 530 |
// Check that the byte is valid, then add it to the character:
|
| 531 |
if (($value & 0xC0) === 0x80) |
| 532 |
{
|
| 533 |
$character |= ($value & 0x3F) << (--$remaining * 6); |
| 534 |
} |
| 535 |
// If it is invalid, count the sequence as invalid and reprocess the current byte:
|
| 536 |
else
|
| 537 |
{
|
| 538 |
$valid = false; |
| 539 |
$position--;
|
| 540 |
break;
|
| 541 |
} |
| 542 |
} |
| 543 |
} |
| 544 |
else
|
| 545 |
{
|
| 546 |
$position = $strlen - 1; |
| 547 |
$valid = false; |
| 548 |
} |
| 549 |
} |
| 550 |
|
| 551 |
// Percent encode anything invalid or not in ucschar
|
| 552 |
if (
|
| 553 |
// Invalid sequences
|
| 554 |
!$valid
|
| 555 |
// Non-shortest form sequences are invalid
|
| 556 |
|| $length > 1 && $character <= 0x7F |
| 557 |
|| $length > 2 && $character <= 0x7FF |
| 558 |
|| $length > 3 && $character <= 0xFFFF |
| 559 |
// Outside of range of ucschar codepoints
|
| 560 |
// Noncharacters
|
| 561 |
|| ($character & 0xFFFE) === 0xFFFE |
| 562 |
|| $character >= 0xFDD0 && $character <= 0xFDEF |
| 563 |
|| ( |
| 564 |
// Everything else not in ucschar
|
| 565 |
$character > 0xD7FF && $character < 0xF900 |
| 566 |
|| $character < 0xA0 |
| 567 |
|| $character > 0xEFFFD |
| 568 |
) |
| 569 |
&& ( |
| 570 |
// Everything not in iprivate, if it applies
|
| 571 |
!$iprivate
|
| 572 |
|| $character < 0xE000 |
| 573 |
|| $character > 0x10FFFD |
| 574 |
) |
| 575 |
) |
| 576 |
{
|
| 577 |
// If we were a character, pretend we weren't, but rather an error.
|
| 578 |
if ($valid) |
| 579 |
$position--;
|
| 580 |
|
| 581 |
for ($j = $start; $j <= $position; $j++) |
| 582 |
{
|
| 583 |
$string = substr_replace($string, sprintf('%%%02X', ord($string[$j])), $j, 1); |
| 584 |
$j += 2; |
| 585 |
$position += 2; |
| 586 |
$strlen += 2; |
| 587 |
} |
| 588 |
} |
| 589 |
} |
| 590 |
|
| 591 |
return $string; |
| 592 |
} |
| 593 |
|
| 594 |
/**
|
| 595 |
* Callback function for preg_replace_callback.
|
| 596 |
*
|
| 597 |
* Removes sequences of percent encoded bytes that represent UTF-8
|
| 598 |
* encoded characters in iunreserved
|
| 599 |
*
|
| 600 |
* @param array $match PCRE match
|
| 601 |
* @return string Replacement
|
| 602 |
*/
|
| 603 |
protected function remove_iunreserved_percent_encoded($match) |
| 604 |
{
|
| 605 |
// As we just have valid percent encoded sequences we can just explode
|
| 606 |
// and ignore the first member of the returned array (an empty string).
|
| 607 |
$bytes = explode('%', $match[0]); |
| 608 |
|
| 609 |
// Initialize the new string (this is what will be returned) and that
|
| 610 |
// there are no bytes remaining in the current sequence (unsurprising
|
| 611 |
// at the first byte!).
|
| 612 |
$string = ''; |
| 613 |
$remaining = 0; |
| 614 |
|
| 615 |
// Loop over each and every byte, and set $value to its value
|
| 616 |
for ($i = 1, $len = count($bytes); $i < $len; $i++) |
| 617 |
{
|
| 618 |
$value = hexdec($bytes[$i]); |
| 619 |
|
| 620 |
// If we're the first byte of sequence:
|
| 621 |
if (!$remaining) |
| 622 |
{
|
| 623 |
// Start position
|
| 624 |
$start = $i; |
| 625 |
|
| 626 |
// By default we are valid
|
| 627 |
$valid = true; |
| 628 |
|
| 629 |
// One byte sequence:
|
| 630 |
if ($value <= 0x7F) |
| 631 |
{
|
| 632 |
$character = $value; |
| 633 |
$length = 1; |
| 634 |
} |
| 635 |
// Two byte sequence:
|
| 636 |
elseif (($value & 0xE0) === 0xC0) |
| 637 |
{
|
| 638 |
$character = ($value & 0x1F) << 6; |
| 639 |
$length = 2; |
| 640 |
$remaining = 1; |
| 641 |
} |
| 642 |
// Three byte sequence:
|
| 643 |
elseif (($value & 0xF0) === 0xE0) |
| 644 |
{
|
| 645 |
$character = ($value & 0x0F) << 12; |
| 646 |
$length = 3; |
| 647 |
$remaining = 2; |
| 648 |
} |
| 649 |
// Four byte sequence:
|
| 650 |
elseif (($value & 0xF8) === 0xF0) |
| 651 |
{
|
| 652 |
$character = ($value & 0x07) << 18; |
| 653 |
$length = 4; |
| 654 |
$remaining = 3; |
| 655 |
} |
| 656 |
// Invalid byte:
|
| 657 |
else
|
| 658 |
{
|
| 659 |
$valid = false; |
| 660 |
$remaining = 0; |
| 661 |
} |
| 662 |
} |
| 663 |
// Continuation byte:
|
| 664 |
else
|
| 665 |
{
|
| 666 |
// Check that the byte is valid, then add it to the character:
|
| 667 |
if (($value & 0xC0) === 0x80) |
| 668 |
{
|
| 669 |
$remaining--;
|
| 670 |
$character |= ($value & 0x3F) << ($remaining * 6); |
| 671 |
} |
| 672 |
// If it is invalid, count the sequence as invalid and reprocess the current byte as the start of a sequence:
|
| 673 |
else
|
| 674 |
{
|
| 675 |
$valid = false; |
| 676 |
$remaining = 0; |
| 677 |
$i--;
|
| 678 |
} |
| 679 |
} |
| 680 |
|
| 681 |
// If we've reached the end of the current byte sequence, append it to Unicode::$data
|
| 682 |
if (!$remaining) |
| 683 |
{
|
| 684 |
// Percent encode anything invalid or not in iunreserved
|
| 685 |
if (
|
| 686 |
// Invalid sequences
|
| 687 |
!$valid
|
| 688 |
// Non-shortest form sequences are invalid
|
| 689 |
|| $length > 1 && $character <= 0x7F |
| 690 |
|| $length > 2 && $character <= 0x7FF |
| 691 |
|| $length > 3 && $character <= 0xFFFF |
| 692 |
// Outside of range of iunreserved codepoints
|
| 693 |
|| $character < 0x2D |
| 694 |
|| $character > 0xEFFFD |
| 695 |
// Noncharacters
|
| 696 |
|| ($character & 0xFFFE) === 0xFFFE |
| 697 |
|| $character >= 0xFDD0 && $character <= 0xFDEF |
| 698 |
// Everything else not in iunreserved (this is all BMP)
|
| 699 |
|| $character === 0x2F |
| 700 |
|| $character > 0x39 && $character < 0x41 |
| 701 |
|| $character > 0x5A && $character < 0x61 |
| 702 |
|| $character > 0x7A && $character < 0x7E |
| 703 |
|| $character > 0x7E && $character < 0xA0 |
| 704 |
|| $character > 0xD7FF && $character < 0xF900 |
| 705 |
) |
| 706 |
{
|
| 707 |
for ($j = $start; $j <= $i; $j++) |
| 708 |
{
|
| 709 |
$string .= '%' . strtoupper($bytes[$j]); |
| 710 |
} |
| 711 |
} |
| 712 |
else
|
| 713 |
{
|
| 714 |
for ($j = $start; $j <= $i; $j++) |
| 715 |
{
|
| 716 |
$string .= chr(hexdec($bytes[$j])); |
| 717 |
} |
| 718 |
} |
| 719 |
} |
| 720 |
} |
| 721 |
|
| 722 |
// If we have any bytes left over they are invalid (i.e., we are
|
| 723 |
// mid-way through a multi-byte sequence)
|
| 724 |
if ($remaining) |
| 725 |
{
|
| 726 |
for ($j = $start; $j < $len; $j++) |
| 727 |
{
|
| 728 |
$string .= '%' . strtoupper($bytes[$j]); |
| 729 |
} |
| 730 |
} |
| 731 |
|
| 732 |
return $string; |
| 733 |
} |
| 734 |
|
| 735 |
protected function scheme_normalization() |
| 736 |
{
|
| 737 |
if (isset($this->normalization[$this->scheme]['iuserinfo']) && $this->iuserinfo === $this->normalization[$this->scheme]['iuserinfo']) |
| 738 |
{
|
| 739 |
$this->iuserinfo = null; |
| 740 |
} |
| 741 |
if (isset($this->normalization[$this->scheme]['ihost']) && $this->ihost === $this->normalization[$this->scheme]['ihost']) |
| 742 |
{
|
| 743 |
$this->ihost = null; |
| 744 |
} |
| 745 |
if (isset($this->normalization[$this->scheme]['port']) && $this->port === $this->normalization[$this->scheme]['port']) |
| 746 |
{
|
| 747 |
$this->port = null; |
| 748 |
} |
| 749 |
if (isset($this->normalization[$this->scheme]['ipath']) && $this->ipath === $this->normalization[$this->scheme]['ipath']) |
| 750 |
{
|
| 751 |
$this->ipath = ''; |
| 752 |
} |
| 753 |
if (isset($this->normalization[$this->scheme]['iquery']) && $this->iquery === $this->normalization[$this->scheme]['iquery']) |
| 754 |
{
|
| 755 |
$this->iquery = null; |
| 756 |
} |
| 757 |
if (isset($this->normalization[$this->scheme]['ifragment']) && $this->ifragment === $this->normalization[$this->scheme]['ifragment']) |
| 758 |
{
|
| 759 |
$this->ifragment = null; |
| 760 |
} |
| 761 |
} |
| 762 |
|
| 763 |
/**
|
| 764 |
* Check if the object represents a valid IRI. This needs to be done on each
|
| 765 |
* call as some things change depending on another part of the IRI.
|
| 766 |
*
|
| 767 |
* @return bool
|
| 768 |
*/
|
| 769 |
public function is_valid() |
| 770 |
{
|
| 771 |
$isauthority = $this->iuserinfo !== null || $this->ihost !== null || $this->port !== null; |
| 772 |
if ($this->ipath !== '' && |
| 773 |
( |
| 774 |
$isauthority && (
|
| 775 |
$this->ipath[0] !== '/' || |
| 776 |
substr($this->ipath, 0, 2) === '//' |
| 777 |
) || |
| 778 |
( |
| 779 |
$this->scheme === null && |
| 780 |
!$isauthority &&
|
| 781 |
strpos($this->ipath, ':') !== false && |
| 782 |
(strpos($this->ipath, '/') === false ? true : strpos($this->ipath, ':') < strpos($this->ipath, '/')) |
| 783 |
) |
| 784 |
) |
| 785 |
) |
| 786 |
{
|
| 787 |
return false; |
| 788 |
} |
| 789 |
|
| 790 |
return true; |
| 791 |
} |
| 792 |
|
| 793 |
/**
|
| 794 |
* Set the entire IRI. Returns true on success, false on failure (if there
|
| 795 |
* are any invalid characters).
|
| 796 |
*
|
| 797 |
* @param string $iri
|
| 798 |
* @return bool
|
| 799 |
*/
|
| 800 |
public function set_iri($iri) |
| 801 |
{
|
| 802 |
static $cache; |
| 803 |
if (!$cache) |
| 804 |
{
|
| 805 |
$cache = array(); |
| 806 |
} |
| 807 |
|
| 808 |
if ($iri === null) |
| 809 |
{
|
| 810 |
return true; |
| 811 |
} |
| 812 |
elseif (isset($cache[$iri])) |
| 813 |
{
|
| 814 |
list($this->scheme, |
| 815 |
$this->iuserinfo,
|
| 816 |
$this->ihost,
|
| 817 |
$this->port,
|
| 818 |
$this->ipath,
|
| 819 |
$this->iquery,
|
| 820 |
$this->ifragment,
|
| 821 |
$return) = $cache[$iri]; |
| 822 |
return $return; |
| 823 |
} |
| 824 |
else
|
| 825 |
{
|
| 826 |
$parsed = $this->parse_iri((string) $iri); |
| 827 |
if (!$parsed) |
| 828 |
{
|
| 829 |
return false; |
| 830 |
} |
| 831 |
|
| 832 |
$return = $this->set_scheme($parsed['scheme']) |
| 833 |
&& $this->set_authority($parsed['authority']) |
| 834 |
&& $this->set_path($parsed['path']) |
| 835 |
&& $this->set_query($parsed['query']) |
| 836 |
&& $this->set_fragment($parsed['fragment']); |
| 837 |
|
| 838 |
$cache[$iri] = array($this->scheme, |
| 839 |
$this->iuserinfo,
|
| 840 |
$this->ihost,
|
| 841 |
$this->port,
|
| 842 |
$this->ipath,
|
| 843 |
$this->iquery,
|
| 844 |
$this->ifragment,
|
| 845 |
$return);
|
| 846 |
return $return; |
| 847 |
} |
| 848 |
} |
| 849 |
|
| 850 |
/**
|
| 851 |
* Set the scheme. Returns true on success, false on failure (if there are
|
| 852 |
* any invalid characters).
|
| 853 |
*
|
| 854 |
* @param string $scheme
|
| 855 |
* @return bool
|
| 856 |
*/
|
| 857 |
public function set_scheme($scheme) |
| 858 |
{
|
| 859 |
if ($scheme === null) |
| 860 |
{
|
| 861 |
$this->scheme = null; |
| 862 |
} |
| 863 |
elseif (!preg_match('/^[A-Za-z][0-9A-Za-z+\-.]*$/', $scheme)) |
| 864 |
{
|
| 865 |
$this->scheme = null; |
| 866 |
return false; |
| 867 |
} |
| 868 |
else
|
| 869 |
{
|
| 870 |
$this->scheme = strtolower($scheme); |
| 871 |
} |
| 872 |
return true; |
| 873 |
} |
| 874 |
|
| 875 |
/**
|
| 876 |
* Set the authority. Returns true on success, false on failure (if there are
|
| 877 |
* any invalid characters).
|
| 878 |
*
|
| 879 |
* @param string $authority
|
| 880 |
* @return bool
|
| 881 |
*/
|
| 882 |
public function set_authority($authority) |
| 883 |
{
|
| 884 |
static $cache; |
| 885 |
if (!$cache) |
| 886 |
$cache = array(); |
| 887 |
|
| 888 |
if ($authority === null) |
| 889 |
{
|
| 890 |
$this->iuserinfo = null; |
| 891 |
$this->ihost = null; |
| 892 |
$this->port = null; |
| 893 |
return true; |
| 894 |
} |
| 895 |
elseif (isset($cache[$authority])) |
| 896 |
{
|
| 897 |
list($this->iuserinfo, |
| 898 |
$this->ihost,
|
| 899 |
$this->port,
|
| 900 |
$return) = $cache[$authority]; |
| 901 |
|
| 902 |
return $return; |
| 903 |
} |
| 904 |
else
|
| 905 |
{
|
| 906 |
$remaining = $authority; |
| 907 |
if (($iuserinfo_end = strrpos($remaining, '@')) !== false) |
| 908 |
{
|
| 909 |
$iuserinfo = substr($remaining, 0, $iuserinfo_end); |
| 910 |
$remaining = substr($remaining, $iuserinfo_end + 1); |
| 911 |
} |
| 912 |
else
|
| 913 |
{
|
| 914 |
$iuserinfo = null; |
| 915 |
} |
| 916 |
if (($port_start = strpos($remaining, ':', strpos($remaining, ']'))) !== false) |
| 917 |
{
|
| 918 |
if (($port = substr($remaining, $port_start + 1)) === false) |
| 919 |
{
|
| 920 |
$port = null; |
| 921 |
} |
| 922 |
$remaining = substr($remaining, 0, $port_start); |
| 923 |
} |
| 924 |
else
|
| 925 |
{
|
| 926 |
$port = null; |
| 927 |
} |
| 928 |
|
| 929 |
$return = $this->set_userinfo($iuserinfo) && |
| 930 |
$this->set_host($remaining) && |
| 931 |
$this->set_port($port); |
| 932 |
|
| 933 |
$cache[$authority] = array($this->iuserinfo, |
| 934 |
$this->ihost,
|
| 935 |
$this->port,
|
| 936 |
$return);
|
| 937 |
|
| 938 |
return $return; |
| 939 |
} |
| 940 |
} |
| 941 |
|
| 942 |
/**
|
| 943 |
* Set the iuserinfo.
|
| 944 |
*
|
| 945 |
* @param string $iuserinfo
|
| 946 |
* @return bool
|
| 947 |
*/
|
| 948 |
public function set_userinfo($iuserinfo) |
| 949 |
{
|
| 950 |
if ($iuserinfo === null) |
| 951 |
{
|
| 952 |
$this->iuserinfo = null; |
| 953 |
} |
| 954 |
else
|
| 955 |
{
|
| 956 |
$this->iuserinfo = $this->replace_invalid_with_pct_encoding($iuserinfo, '!$&\'()*+,;=:'); |
| 957 |
$this->scheme_normalization();
|
| 958 |
} |
| 959 |
|
| 960 |
return true; |
| 961 |
} |
| 962 |
|
| 963 |
/**
|
| 964 |
* Set the ihost. Returns true on success, false on failure (if there are
|
| 965 |
* any invalid characters).
|
| 966 |
*
|
| 967 |
* @param string $ihost
|
| 968 |
* @return bool
|
| 969 |
*/
|
| 970 |
public function set_host($ihost) |
| 971 |
{
|
| 972 |
if ($ihost === null) |
| 973 |
{
|
| 974 |
$this->ihost = null; |
| 975 |
return true; |
| 976 |
} |
| 977 |
elseif (substr($ihost, 0, 1) === '[' && substr($ihost, -1) === ']') |
| 978 |
{
|
| 979 |
if (SimplePie_Net_IPv6::check_ipv6(substr($ihost, 1, -1))) |
| 980 |
{
|
| 981 |
$this->ihost = '[' . SimplePie_Net_IPv6::compress(substr($ihost, 1, -1)) . ']'; |
| 982 |
} |
| 983 |
else
|
| 984 |
{
|
| 985 |
$this->ihost = null; |
| 986 |
return false; |
| 987 |
} |
| 988 |
} |
| 989 |
else
|
| 990 |
{
|
| 991 |
$ihost = $this->replace_invalid_with_pct_encoding($ihost, '!$&\'()*+,;='); |
| 992 |
|
| 993 |
// Lowercase, but ignore pct-encoded sections (as they should
|
| 994 |
// remain uppercase). This must be done after the previous step
|
| 995 |
// as that can add unescaped characters.
|
| 996 |
$position = 0; |
| 997 |
$strlen = strlen($ihost); |
| 998 |
while (($position += strcspn($ihost, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ%', $position)) < $strlen) |
| 999 |
{
|
| 1000 |
if ($ihost[$position] === '%') |
| 1001 |
{
|
| 1002 |
$position += 3; |
| 1003 |
} |
| 1004 |
else
|
| 1005 |
{
|
| 1006 |
$ihost[$position] = strtolower($ihost[$position]); |
| 1007 |
$position++;
|
| 1008 |
} |
| 1009 |
} |
| 1010 |
|
| 1011 |
$this->ihost = $ihost; |
| 1012 |
} |
| 1013 |
|
| 1014 |
$this->scheme_normalization();
|
| 1015 |
|
| 1016 |
return true; |
| 1017 |
} |
| 1018 |
|
| 1019 |
/**
|
| 1020 |
* Set the port. Returns true on success, false on failure (if there are
|
| 1021 |
* any invalid characters).
|
| 1022 |
*
|
| 1023 |
* @param string $port
|
| 1024 |
* @return bool
|
| 1025 |
*/
|
| 1026 |
public function set_port($port) |
| 1027 |
{
|
| 1028 |
if ($port === null) |
| 1029 |
{
|
| 1030 |
$this->port = null; |
| 1031 |
return true; |
| 1032 |
} |
| 1033 |
elseif (strspn($port, '0123456789') === strlen($port)) |
| 1034 |
{
|
| 1035 |
$this->port = (int) $port; |
| 1036 |
$this->scheme_normalization();
|
| 1037 |
return true; |
| 1038 |
} |
| 1039 |
else
|
| 1040 |
{
|
| 1041 |
$this->port = null; |
| 1042 |
return false; |
| 1043 |
} |
| 1044 |
} |
| 1045 |
|
| 1046 |
/**
|
| 1047 |
* Set the ipath.
|
| 1048 |
*
|
| 1049 |
* @param string $ipath
|
| 1050 |
* @return bool
|
| 1051 |
*/
|
| 1052 |
public function set_path($ipath) |
| 1053 |
{
|
| 1054 |
static $cache; |
| 1055 |
if (!$cache) |
| 1056 |
{
|
| 1057 |
$cache = array(); |
| 1058 |
} |
| 1059 |
|
| 1060 |
$ipath = (string) $ipath; |
| 1061 |
|
| 1062 |
if (isset($cache[$ipath])) |
| 1063 |
{
|
| 1064 |
$this->ipath = $cache[$ipath][(int) ($this->scheme !== null)]; |
| 1065 |
} |
| 1066 |
else
|
| 1067 |
{
|
| 1068 |
$valid = $this->replace_invalid_with_pct_encoding($ipath, '!$&\'()*+,;=@:/'); |
| 1069 |
$removed = $this->remove_dot_segments($valid); |
| 1070 |
|
| 1071 |
$cache[$ipath] = array($valid, $removed); |
| 1072 |
$this->ipath = ($this->scheme !== null) ? $removed : $valid; |
| 1073 |
} |
| 1074 |
|
| 1075 |
$this->scheme_normalization();
|
| 1076 |
return true; |
| 1077 |
} |
| 1078 |
|
| 1079 |
/**
|
| 1080 |
* Set the iquery.
|
| 1081 |
*
|
| 1082 |
* @param string $iquery
|
| 1083 |
* @return bool
|
| 1084 |
*/
|
| 1085 |
public function set_query($iquery) |
| 1086 |
{
|
| 1087 |
if ($iquery === null) |
| 1088 |
{
|
| 1089 |
$this->iquery = null; |
| 1090 |
} |
| 1091 |
else
|
| 1092 |
{
|
| 1093 |
$this->iquery = $this->replace_invalid_with_pct_encoding($iquery, '!$&\'()*+,;=:@/?', true); |
| 1094 |
$this->scheme_normalization();
|
| 1095 |
} |
| 1096 |
return true; |
| 1097 |
} |
| 1098 |
|
| 1099 |
/**
|
| 1100 |
* Set the ifragment.
|
| 1101 |
*
|
| 1102 |
* @param string $ifragment
|
| 1103 |
* @return bool
|
| 1104 |
*/
|
| 1105 |
public function set_fragment($ifragment) |
| 1106 |
{
|
| 1107 |
if ($ifragment === null) |
| 1108 |
{
|
| 1109 |
$this->ifragment = null; |
| 1110 |
} |
| 1111 |
else
|
| 1112 |
{
|
| 1113 |
$this->ifragment = $this->replace_invalid_with_pct_encoding($ifragment, '!$&\'()*+,;=:@/?'); |
| 1114 |
$this->scheme_normalization();
|
| 1115 |
} |
| 1116 |
return true; |
| 1117 |
} |
| 1118 |
|
| 1119 |
/**
|
| 1120 |
* Convert an IRI to a URI (or parts thereof)
|
| 1121 |
*
|
| 1122 |
* @return string
|
| 1123 |
*/
|
| 1124 |
public function to_uri($string) |
| 1125 |
{
|
| 1126 |
static $non_ascii; |
| 1127 |
if (!$non_ascii) |
| 1128 |
{
|
| 1129 |
$non_ascii = implode('', range("\x80", "\xFF")); |
| 1130 |
} |
| 1131 |
|
| 1132 |
$position = 0; |
| 1133 |
$strlen = strlen($string); |
| 1134 |
while (($position += strcspn($string, $non_ascii, $position)) < $strlen) |
| 1135 |
{
|
| 1136 |
$string = substr_replace($string, sprintf('%%%02X', ord($string[$position])), $position, 1); |
| 1137 |
$position += 3; |
| 1138 |
$strlen += 2; |
| 1139 |
} |
| 1140 |
|
| 1141 |
return $string; |
| 1142 |
} |
| 1143 |
|
| 1144 |
/**
|
| 1145 |
* Get the complete IRI
|
| 1146 |
*
|
| 1147 |
* @return string
|
| 1148 |
*/
|
| 1149 |
public function get_iri() |
| 1150 |
{
|
| 1151 |
if (!$this->is_valid()) |
| 1152 |
{
|
| 1153 |
return false; |
| 1154 |
} |
| 1155 |
|
| 1156 |
$iri = ''; |
| 1157 |
if ($this->scheme !== null) |
| 1158 |
{
|
| 1159 |
$iri .= $this->scheme . ':'; |
| 1160 |
} |
| 1161 |
if (($iauthority = $this->get_iauthority()) !== null) |
| 1162 |
{
|
| 1163 |
$iri .= '//' . $iauthority; |
| 1164 |
} |
| 1165 |
if ($this->ipath !== '') |
| 1166 |
{
|
| 1167 |
$iri .= $this->ipath; |
| 1168 |
} |
| 1169 |
elseif (!empty($this->normalization[$this->scheme]['ipath']) && $iauthority !== null && $iauthority !== '') |
| 1170 |
{
|
| 1171 |
$iri .= $this->normalization[$this->scheme]['ipath']; |
| 1172 |
} |
| 1173 |
if ($this->iquery !== null) |
| 1174 |
{
|
| 1175 |
$iri .= '?' . $this->iquery; |
| 1176 |
} |
| 1177 |
if ($this->ifragment !== null) |
| 1178 |
{
|
| 1179 |
$iri .= '#' . $this->ifragment; |
| 1180 |
} |
| 1181 |
|
| 1182 |
return $iri; |
| 1183 |
} |
| 1184 |
|
| 1185 |
/**
|
| 1186 |
* Get the complete URI
|
| 1187 |
*
|
| 1188 |
* @return string
|
| 1189 |
*/
|
| 1190 |
public function get_uri() |
| 1191 |
{
|
| 1192 |
return $this->to_uri($this->get_iri()); |
| 1193 |
} |
| 1194 |
|
| 1195 |
/**
|
| 1196 |
* Get the complete iauthority
|
| 1197 |
*
|
| 1198 |
* @return string
|
| 1199 |
*/
|
| 1200 |
protected function get_iauthority() |
| 1201 |
{
|
| 1202 |
if ($this->iuserinfo !== null || $this->ihost !== null || $this->port !== null) |
| 1203 |
{
|
| 1204 |
$iauthority = ''; |
| 1205 |
if ($this->iuserinfo !== null) |
| 1206 |
{
|
| 1207 |
$iauthority .= $this->iuserinfo . '@'; |
| 1208 |
} |
| 1209 |
if ($this->ihost !== null) |
| 1210 |
{
|
| 1211 |
$iauthority .= $this->ihost; |
| 1212 |
} |
| 1213 |
if ($this->port !== null) |
| 1214 |
{
|
| 1215 |
$iauthority .= ':' . $this->port; |
| 1216 |
} |
| 1217 |
return $iauthority; |
| 1218 |
} |
| 1219 |
else
|
| 1220 |
{
|
| 1221 |
return null; |
| 1222 |
} |
| 1223 |
} |
| 1224 |
|
| 1225 |
/**
|
| 1226 |
* Get the complete authority
|
| 1227 |
*
|
| 1228 |
* @return string
|
| 1229 |
*/
|
| 1230 |
protected function get_authority() |
| 1231 |
{
|
| 1232 |
$iauthority = $this->get_iauthority(); |
| 1233 |
if (is_string($iauthority)) |
| 1234 |
return $this->to_uri($iauthority); |
| 1235 |
else
|
| 1236 |
return $iauthority; |
| 1237 |
} |
| 1238 |
} |