<?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) 2004-2016, Ryan Parman, Sam 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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* @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue

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* @author Ryan Parman

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* @author Sam 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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* Parses XML into something sane

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*

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*

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* This class can be overloaded with {@see SimplePie::set_parser_class()}

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*

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* @package SimplePie

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* @subpackage Parsing

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*/

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class SimplePie_Parser

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{

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var $error_code;

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var $error_string;

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var $current_line;

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var $current_column;

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var $current_byte;

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var $separator = ' ';

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var $namespace = array('');

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var $element = array('');

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var $xml_base = array('');

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var $xml_base_explicit = array(false);

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var $xml_lang = array('');

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var $data = array();

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var $datas = array(array());

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var $current_xhtml_construct = -1;

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var $encoding;

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protected $registry;

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public function set_registry(SimplePie_Registry $registry)

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{

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$this->registry = $registry;

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}

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public function parse(&$data, $encoding, $url = '')

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{

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if (class_exists('DOMXpath') && function_exists('Mf2\parse')) {

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$doc = new DOMDocument();

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@$doc->loadHTML($data);

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$xpath = new DOMXpath($doc);

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// Check for both h-feed and h-entry, as both a feed with no entries

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// and a list of entries without an h-feed wrapper are both valid.

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$query = '//*[contains(concat(" ", @class, " "), " h-feed ") or '.

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'contains(concat(" ", @class, " "), " h-entry ")]';

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$result = $xpath->query($query);

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if ($result->length !== 0) {

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return $this->parse_microformats($data, $url);

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}

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}

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// Use UTF-8 if we get passed US-ASCII, as every US-ASCII character is a UTF-8 character

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if (strtoupper($encoding) === 'US-ASCII')

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{

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$this->encoding = 'UTF-8';

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}

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else

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{

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$this->encoding = $encoding;

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}

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// Strip BOM:

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// UTF-32 Big Endian BOM

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if (substr($data, 0, 4) === "\x00\x00\xFE\xFF")

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{

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$data = substr($data, 4);

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}

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// UTF-32 Little Endian BOM

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elseif (substr($data, 0, 4) === "\xFF\xFE\x00\x00")

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{

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$data = substr($data, 4);

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}

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// UTF-16 Big Endian BOM

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elseif (substr($data, 0, 2) === "\xFE\xFF")

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{

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$data = substr($data, 2);

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}

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// UTF-16 Little Endian BOM

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elseif (substr($data, 0, 2) === "\xFF\xFE")

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{

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$data = substr($data, 2);

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}

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// UTF-8 BOM

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elseif (substr($data, 0, 3) === "\xEF\xBB\xBF")

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{

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$data = substr($data, 3);

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}

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if (substr($data, 0, 5) === '<?xml' && strspn(substr($data, 5, 1), "\x09\x0A\x0D\x20") && ($pos = strpos($data, '?>')) !== false)

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{

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$declaration = $this->registry->create('XML_Declaration_Parser', array(substr($data, 5, $pos - 5)));

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if ($declaration->parse())

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{

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$data = substr($data, $pos + 2);

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$data = '<?xml version="' . $declaration->version . '" encoding="' . $encoding . '" standalone="' . (($declaration->standalone) ? 'yes' : 'no') . '"?>' ."\n". $this->declare_html_entities() . $data;

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}

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else

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{

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$this->error_string = 'SimplePie bug! Please report this!';

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return false;

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}

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}

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$return = true;

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static $xml_is_sane = null;

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if ($xml_is_sane === null)

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{

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$parser_check = xml_parser_create();

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xml_parse_into_struct($parser_check, '<foo>&amp;</foo>', $values);

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xml_parser_free($parser_check);

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$xml_is_sane = isset($values[0]['value']);

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}

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// Create the parser

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if ($xml_is_sane)

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{

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$xml = xml_parser_create_ns($this->encoding, $this->separator);

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xml_parser_set_option($xml, XML_OPTION_SKIP_WHITE, 1);

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xml_parser_set_option($xml, XML_OPTION_CASE_FOLDING, 0);

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xml_set_object($xml, $this);

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xml_set_character_data_handler($xml, 'cdata');

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xml_set_element_handler($xml, 'tag_open', 'tag_close');

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// Parse!

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if (!xml_parse($xml, $data, true))

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{

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$this->error_code = xml_get_error_code($xml);

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$this->error_string = xml_error_string($this->error_code);

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$return = false;

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}

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$this->current_line = xml_get_current_line_number($xml);

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$this->current_column = xml_get_current_column_number($xml);

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$this->current_byte = xml_get_current_byte_index($xml);

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xml_parser_free($xml);

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return $return;

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}

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libxml_clear_errors();

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$xml = new XMLReader();

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$xml->xml($data);

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while (@$xml->read())

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{

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switch ($xml->nodeType)

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{

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case constant('XMLReader::END_ELEMENT'):

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if ($xml->namespaceURI !== '')

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{

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$tagName = $xml->namespaceURI . $this->separator . $xml->localName;

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}

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else

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{

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$tagName = $xml->localName;

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}

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$this->tag_close(null, $tagName);

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break;

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case constant('XMLReader::ELEMENT'):

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$empty = $xml->isEmptyElement;

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if ($xml->namespaceURI !== '')

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{

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$tagName = $xml->namespaceURI . $this->separator . $xml->localName;

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}

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else

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{

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$tagName = $xml->localName;

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}

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$attributes = array();

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while ($xml->moveToNextAttribute())

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{

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if ($xml->namespaceURI !== '')

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{

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$attrName = $xml->namespaceURI . $this->separator . $xml->localName;

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}

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else

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{

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$attrName = $xml->localName;

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}

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$attributes[$attrName] = $xml->value;

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}

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$this->tag_open(null, $tagName, $attributes);

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if ($empty)

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{

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$this->tag_close(null, $tagName);

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}

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break;

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case constant('XMLReader::TEXT'):

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case constant('XMLReader::CDATA'):

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$this->cdata(null, $xml->value);

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break;

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}

[232] Fix | Delete

}

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if ($error = libxml_get_last_error())

[234] Fix | Delete

{

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$this->error_code = $error->code;

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$this->error_string = $error->message;

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$this->current_line = $error->line;

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$this->current_column = $error->column;

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return false;

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}

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[242] Fix | Delete

return true;

[243] Fix | Delete

}

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[245] Fix | Delete

public function get_error_code()

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{

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return $this->error_code;

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}

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public function get_error_string()

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{

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return $this->error_string;

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}

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public function get_current_line()

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{

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return $this->current_line;

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}

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[260] Fix | Delete

public function get_current_column()

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{

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return $this->current_column;

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}

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public function get_current_byte()

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{

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return $this->current_byte;

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}

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[270] Fix | Delete

public function get_data()

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{

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return $this->data;

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}

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[275] Fix | Delete

public function tag_open($parser, $tag, $attributes)

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{

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list($this->namespace[], $this->element[]) = $this->split_ns($tag);

[278] Fix | Delete

[279] Fix | Delete

$attribs = array();

[280] Fix | Delete

foreach ($attributes as $name => $value)

[281] Fix | Delete

{

[282] Fix | Delete

list($attrib_namespace, $attribute) = $this->split_ns($name);

[283] Fix | Delete

$attribs[$attrib_namespace][$attribute] = $value;

[284] Fix | Delete

}

[285] Fix | Delete

[286] Fix | Delete

if (isset($attribs[SIMPLEPIE_NAMESPACE_XML]['base']))

[287] Fix | Delete

{

[288] Fix | Delete

$base = $this->registry->call('Misc', 'absolutize_url', array($attribs[SIMPLEPIE_NAMESPACE_XML]['base'], end($this->xml_base)));

[289] Fix | Delete

if ($base !== false)

[290] Fix | Delete

{

[291] Fix | Delete

$this->xml_base[] = $base;

[292] Fix | Delete

$this->xml_base_explicit[] = true;

[293] Fix | Delete

}

[294] Fix | Delete

}

[295] Fix | Delete

else

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{

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$this->xml_base[] = end($this->xml_base);

[298] Fix | Delete

$this->xml_base_explicit[] = end($this->xml_base_explicit);

[299] Fix | Delete

}

[300] Fix | Delete

[301] Fix | Delete

if (isset($attribs[SIMPLEPIE_NAMESPACE_XML]['lang']))

[302] Fix | Delete

{

[303] Fix | Delete

$this->xml_lang[] = $attribs[SIMPLEPIE_NAMESPACE_XML]['lang'];

[304] Fix | Delete

}

[305] Fix | Delete

else

[306] Fix | Delete

{

[307] Fix | Delete

$this->xml_lang[] = end($this->xml_lang);

[308] Fix | Delete

}

[309] Fix | Delete

[310] Fix | Delete

if ($this->current_xhtml_construct >= 0)

[311] Fix | Delete

{

[312] Fix | Delete

$this->current_xhtml_construct++;

[313] Fix | Delete

if (end($this->namespace) === SIMPLEPIE_NAMESPACE_XHTML)

[314] Fix | Delete

{

[315] Fix | Delete

$this->data['data'] .= '<' . end($this->element);

[316] Fix | Delete

if (isset($attribs['']))

[317] Fix | Delete

{

[318] Fix | Delete

foreach ($attribs[''] as $name => $value)

[319] Fix | Delete

{

[320] Fix | Delete

$this->data['data'] .= ' ' . $name . '="' . htmlspecialchars($value, ENT_COMPAT, $this->encoding) . '"';

[321] Fix | Delete

}

[322] Fix | Delete

}

[323] Fix | Delete

$this->data['data'] .= '>';

[324] Fix | Delete

}

[325] Fix | Delete

}

[326] Fix | Delete

else

[327] Fix | Delete

{

[328] Fix | Delete

$this->datas[] =& $this->data;

[329] Fix | Delete

$this->data =& $this->data['child'][end($this->namespace)][end($this->element)][];

[330] Fix | Delete

$this->data = array('data' => '', 'attribs' => $attribs, 'xml_base' => end($this->xml_base), 'xml_base_explicit' => end($this->xml_base_explicit), 'xml_lang' => end($this->xml_lang));

[331] Fix | Delete

if ((end($this->namespace) === SIMPLEPIE_NAMESPACE_ATOM_03 && in_array(end($this->element), array('title', 'tagline', 'copyright', 'info', 'summary', 'content')) && isset($attribs['']['mode']) && $attribs['']['mode'] === 'xml')

[332] Fix | Delete

|| (end($this->namespace) === SIMPLEPIE_NAMESPACE_ATOM_10 && in_array(end($this->element), array('rights', 'subtitle', 'summary', 'info', 'title', 'content')) && isset($attribs['']['type']) && $attribs['']['type'] === 'xhtml')

[333] Fix | Delete

|| (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_20 && in_array(end($this->element), array('title')))

[334] Fix | Delete

|| (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_090 && in_array(end($this->element), array('title')))

[335] Fix | Delete

|| (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_10 && in_array(end($this->element), array('title'))))

[336] Fix | Delete

{

[337] Fix | Delete

$this->current_xhtml_construct = 0;

[338] Fix | Delete

}

[339] Fix | Delete

}

[340] Fix | Delete

}

[341] Fix | Delete

[342] Fix | Delete

public function cdata($parser, $cdata)

[343] Fix | Delete

{

[344] Fix | Delete

if ($this->current_xhtml_construct >= 0)

[345] Fix | Delete

{

[346] Fix | Delete

$this->data['data'] .= htmlspecialchars($cdata, ENT_QUOTES, $this->encoding);

[347] Fix | Delete

}

[348] Fix | Delete

else

[349] Fix | Delete

{

[350] Fix | Delete

$this->data['data'] .= $cdata;

[351] Fix | Delete

}

[352] Fix | Delete

}

[353] Fix | Delete

[354] Fix | Delete

public function tag_close($parser, $tag)

[355] Fix | Delete

{

[356] Fix | Delete

if ($this->current_xhtml_construct >= 0)

[357] Fix | Delete

{

[358] Fix | Delete

$this->current_xhtml_construct--;

[359] Fix | Delete

if (end($this->namespace) === SIMPLEPIE_NAMESPACE_XHTML && !in_array(end($this->element), array('area', 'base', 'basefont', 'br', 'col', 'frame', 'hr', 'img', 'input', 'isindex', 'link', 'meta', 'param')))

[360] Fix | Delete

{

[361] Fix | Delete

$this->data['data'] .= '</' . end($this->element) . '>';

[362] Fix | Delete

}

[363] Fix | Delete

}

[364] Fix | Delete

if ($this->current_xhtml_construct === -1)

[365] Fix | Delete

{

[366] Fix | Delete

$this->data =& $this->datas[count($this->datas) - 1];

[367] Fix | Delete

array_pop($this->datas);

[368] Fix | Delete

}

[369] Fix | Delete

[370] Fix | Delete

array_pop($this->element);

[371] Fix | Delete

array_pop($this->namespace);

[372] Fix | Delete

array_pop($this->xml_base);

[373] Fix | Delete

array_pop($this->xml_base_explicit);

[374] Fix | Delete

array_pop($this->xml_lang);

[375] Fix | Delete

}

[376] Fix | Delete

[377] Fix | Delete

public function split_ns($string)

[378] Fix | Delete

{

[379] Fix | Delete

static $cache = array();

[380] Fix | Delete

if (!isset($cache[$string]))

[381] Fix | Delete

{

[382] Fix | Delete

if ($pos = strpos($string, $this->separator))

[383] Fix | Delete

{

[384] Fix | Delete

static $separator_length;

[385] Fix | Delete

if (!$separator_length)

[386] Fix | Delete

{

[387] Fix | Delete

$separator_length = strlen($this->separator);

[388] Fix | Delete

}

[389] Fix | Delete

$namespace = substr($string, 0, $pos);

[390] Fix | Delete

$local_name = substr($string, $pos + $separator_length);

[391] Fix | Delete

if (strtolower($namespace) === SIMPLEPIE_NAMESPACE_ITUNES)

[392] Fix | Delete

{

[393] Fix | Delete

$namespace = SIMPLEPIE_NAMESPACE_ITUNES;

[394] Fix | Delete

}

[395] Fix | Delete

[396] Fix | Delete

// Normalize the Media RSS namespaces

[397] Fix | Delete

if ($namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG ||

[398] Fix | Delete

$namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG2 ||

[399] Fix | Delete

$namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG3 ||

[400] Fix | Delete

$namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG4 ||

[401] Fix | Delete

$namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG5 )

[402] Fix | Delete

{

[403] Fix | Delete

$namespace = SIMPLEPIE_NAMESPACE_MEDIARSS;

[404] Fix | Delete

}

[405] Fix | Delete

$cache[$string] = array($namespace, $local_name);

[406] Fix | Delete

}

[407] Fix | Delete

else

[408] Fix | Delete

{

[409] Fix | Delete

$cache[$string] = array('', $string);

[410] Fix | Delete

}

[411] Fix | Delete

}

[412] Fix | Delete

return $cache[$string];

[413] Fix | Delete

}

[414] Fix | Delete

[415] Fix | Delete

private function parse_hcard($data, $category = false) {

[416] Fix | Delete

$name = '';

[417] Fix | Delete

$link = '';

[418] Fix | Delete

// Check if h-card is set and pass that information on in the link.

[419] Fix | Delete

if (isset($data['type']) && in_array('h-card', $data['type'])) {

[420] Fix | Delete

if (isset($data['properties']['name'][0])) {

[421] Fix | Delete

$name = $data['properties']['name'][0];

[422] Fix | Delete

}

[423] Fix | Delete

if (isset($data['properties']['url'][0])) {

[424] Fix | Delete

$link = $data['properties']['url'][0];

[425] Fix | Delete

if ($name === '') {

[426] Fix | Delete

$name = $link;

[427] Fix | Delete

}

[428] Fix | Delete

else {

[429] Fix | Delete

// can't have commas in categories.

[430] Fix | Delete

$name = str_replace(',', '', $name);

[431] Fix | Delete

}

[432] Fix | Delete

$person_tag = $category ? '<span class="person-tag"></span>' : '';

[433] Fix | Delete

return '<a class="h-card" href="'.$link.'">'.$person_tag.$name.'</a>';

[434] Fix | Delete

}

[435] Fix | Delete

}

[436] Fix | Delete

return isset($data['value']) ? $data['value'] : '';

[437] Fix | Delete

}

[438] Fix | Delete

[439] Fix | Delete

private function parse_microformats(&$data, $url) {

[440] Fix | Delete

$feed_title = '';

[441] Fix | Delete

$feed_author = NULL;

[442] Fix | Delete

$author_cache = array();

[443] Fix | Delete

$items = array();

[444] Fix | Delete

$entries = array();

[445] Fix | Delete

$mf = Mf2\parse($data, $url);

[446] Fix | Delete

// First look for an h-feed.

[447] Fix | Delete

$h_feed = array();

[448] Fix | Delete

foreach ($mf['items'] as $mf_item) {

[449] Fix | Delete

if (in_array('h-feed', $mf_item['type'])) {

[450] Fix | Delete

$h_feed = $mf_item;

[451] Fix | Delete

break;

[452] Fix | Delete

}

[453] Fix | Delete

// Also look for h-feed or h-entry in the children of each top level item.

[454] Fix | Delete

if (!isset($mf_item['children'][0]['type'])) continue;

[455] Fix | Delete

if (in_array('h-feed', $mf_item['children'][0]['type'])) {

[456] Fix | Delete

$h_feed = $mf_item['children'][0];

[457] Fix | Delete

// In this case the parent of the h-feed may be an h-card, so use it as

[458] Fix | Delete

// the feed_author.

[459] Fix | Delete

if (in_array('h-card', $mf_item['type'])) $feed_author = $mf_item;

[460] Fix | Delete

break;

[461] Fix | Delete

}

[462] Fix | Delete

else if (in_array('h-entry', $mf_item['children'][0]['type'])) {

[463] Fix | Delete

$entries = $mf_item['children'];

[464] Fix | Delete

// In this case the parent of the h-entry list may be an h-card, so use

[465] Fix | Delete

// it as the feed_author.

[466] Fix | Delete

if (in_array('h-card', $mf_item['type'])) $feed_author = $mf_item;

[467] Fix | Delete

break;

[468] Fix | Delete

}

[469] Fix | Delete

}

[470] Fix | Delete

if (isset($h_feed['children'])) {

[471] Fix | Delete

$entries = $h_feed['children'];

[472] Fix | Delete

// Also set the feed title and store author from the h-feed if available.

[473] Fix | Delete

if (isset($mf['items'][0]['properties']['name'][0])) {

[474] Fix | Delete

$feed_title = $mf['items'][0]['properties']['name'][0];

[475] Fix | Delete

}

[476] Fix | Delete

if (isset($mf['items'][0]['properties']['author'][0])) {

[477] Fix | Delete

$feed_author = $mf['items'][0]['properties']['author'][0];

[478] Fix | Delete

}

[479] Fix | Delete

}

[480] Fix | Delete

else if (count($entries) === 0) {

[481] Fix | Delete

$entries = $mf['items'];

[482] Fix | Delete

}

[483] Fix | Delete

for ($i = 0; $i < count($entries); $i++) {

[484] Fix | Delete

$entry = $entries[$i];

[485] Fix | Delete

if (in_array('h-entry', $entry['type'])) {

[486] Fix | Delete

$item = array();

[487] Fix | Delete

$title = '';

[488] Fix | Delete

$description = '';

[489] Fix | Delete

if (isset($entry['properties']['url'][0])) {

[490] Fix | Delete

$link = $entry['properties']['url'][0];

[491] Fix | Delete

if (isset($link['value'])) $link = $link['value'];

[492] Fix | Delete

$item['link'] = array(array('data' => $link));

[493] Fix | Delete

}

[494] Fix | Delete

if (isset($entry['properties']['uid'][0])) {

[495] Fix | Delete

$guid = $entry['properties']['uid'][0];

[496] Fix | Delete

if (isset($guid['value'])) $guid = $guid['value'];

[497] Fix | Delete

$item['guid'] = array(array('data' => $guid));

[498] Fix | Delete

}

[499] Fix | Delete