root / drupal7 / sites / all / libraries / simplepie / library / SimplePie / Parser.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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* 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, $encoding) |
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{
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// Use UTF-8 if we get passed US-ASCII, as every US-ASCII character is a UTF-8 character
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if (strtoupper($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') . '"?>' . $data; |
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} |
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else
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{
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$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>&</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 $return; |
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} |
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else
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{
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libxml_clear_errors(); |
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$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, $xml->value); |
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break;
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} |
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} |
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if ($error = libxml_get_last_error()) |
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{
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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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else
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{
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return true; |
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} |
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} |
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} |
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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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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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public function get_data() |
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{
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return $this->data; |
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} |
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public function tag_open($parser, $tag, $attributes) |
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{
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list($this->namespace[], $this->element[]) = $this->split_ns($tag); |
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$attribs = array(); |
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foreach ($attributes as $name => $value) |
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{
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list($attrib_namespace, $attribute) = $this->split_ns($name); |
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$attribs[$attrib_namespace][$attribute] = $value; |
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} |
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if (isset($attribs[SIMPLEPIE_NAMESPACE_XML]['base'])) |
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{
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$base = $this->registry->call('Misc', 'absolutize_url', array($attribs[SIMPLEPIE_NAMESPACE_XML]['base'], end($this->xml_base))); |
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if ($base !== false) |
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{
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$this->xml_base[] = $base; |
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$this->xml_base_explicit[] = true; |
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} |
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} |
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else
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{
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$this->xml_base[] = end($this->xml_base); |
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$this->xml_base_explicit[] = end($this->xml_base_explicit); |
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} |
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if (isset($attribs[SIMPLEPIE_NAMESPACE_XML]['lang'])) |
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{
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$this->xml_lang[] = $attribs[SIMPLEPIE_NAMESPACE_XML]['lang']; |
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} |
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else
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{
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$this->xml_lang[] = end($this->xml_lang); |
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} |
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if ($this->current_xhtml_construct >= 0) |
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{
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$this->current_xhtml_construct++;
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if (end($this->namespace) === SIMPLEPIE_NAMESPACE_XHTML) |
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{
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$this->data['data'] .= '<' . end($this->element); |
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if (isset($attribs[''])) |
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{
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foreach ($attribs[''] as $name => $value) |
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{
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$this->data['data'] .= ' ' . $name . '="' . htmlspecialchars($value, ENT_COMPAT, $this->encoding) . '"'; |
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} |
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} |
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$this->data['data'] .= '>'; |
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} |
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} |
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else
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{
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$this->datas[] =& $this->data; |
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$this->data =& $this->data['child'][end($this->namespace)][end($this->element)][]; |
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$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)); |
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if ((end($this->namespace) === SIMPLEPIE_NAMESPACE_ATOM_03 && in_array(end($this->element), array('title', 'tagline', 'copyright', 'info', 'summary', 'content')) && isset($attribs['']['mode']) && $attribs['']['mode'] === 'xml') |
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|| (end($this->namespace) === SIMPLEPIE_NAMESPACE_ATOM_10 && in_array(end($this->element), array('rights', 'subtitle', 'summary', 'info', 'title', 'content')) && isset($attribs['']['type']) && $attribs['']['type'] === 'xhtml') |
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|| (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_20 && in_array(end($this->element), array('title'))) |
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|| (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_090 && in_array(end($this->element), array('title'))) |
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|| (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_10 && in_array(end($this->element), array('title')))) |
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{
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$this->current_xhtml_construct = 0; |
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} |
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} |
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} |
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public function cdata($parser, $cdata) |
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{
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if ($this->current_xhtml_construct >= 0) |
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{
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$this->data['data'] .= htmlspecialchars($cdata, ENT_QUOTES, $this->encoding); |
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} |
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else
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{
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$this->data['data'] .= $cdata; |
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} |
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} |
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public function tag_close($parser, $tag) |
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{
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if ($this->current_xhtml_construct >= 0) |
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{
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$this->current_xhtml_construct--;
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if (end($this->namespace) === SIMPLEPIE_NAMESPACE_XHTML && !in_array(end($this->element), array('area', 'base', 'basefont', 'br', 'col', 'frame', 'hr', 'img', 'input', 'isindex', 'link', 'meta', 'param'))) |
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{
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$this->data['data'] .= '</' . end($this->element) . '>'; |
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} |
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} |
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if ($this->current_xhtml_construct === -1) |
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{
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$this->data =& $this->datas[count($this->datas) - 1]; |
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array_pop($this->datas); |
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} |
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array_pop($this->element); |
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array_pop($this->namespace); |
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array_pop($this->xml_base); |
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array_pop($this->xml_base_explicit); |
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array_pop($this->xml_lang); |
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} |
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public function split_ns($string) |
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{
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static $cache = array(); |
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if (!isset($cache[$string])) |
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{
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if ($pos = strpos($string, $this->separator)) |
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{
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static $separator_length; |
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if (!$separator_length) |
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{
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$separator_length = strlen($this->separator); |
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} |
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$namespace = substr($string, 0, $pos); |
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$local_name = substr($string, $pos + $separator_length); |
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if (strtolower($namespace) === SIMPLEPIE_NAMESPACE_ITUNES) |
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{
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$namespace = SIMPLEPIE_NAMESPACE_ITUNES; |
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} |
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// Normalize the Media RSS namespaces
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if ($namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG || |
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$namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG2 || |
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$namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG3 || |
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$namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG4 || |
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$namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG5 ) |
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{
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$namespace = SIMPLEPIE_NAMESPACE_MEDIARSS; |
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} |
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$cache[$string] = array($namespace, $local_name); |
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} |
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else
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{
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$cache[$string] = array('', $string); |
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} |
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} |
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return $cache[$string]; |
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} |
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} |