--- /dev/null
+<?php
+/**
+ * SimplePie
+ *
+ * A PHP-Based RSS and Atom Feed Framework.
+ * Takes the hard work out of managing a complete RSS/Atom solution.
+ *
+ * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * * Neither the name of the SimplePie Team nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
+ * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * @package SimplePie
+ * @version 1.3.1
+ * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
+ * @author Ryan Parman
+ * @author Geoffrey Sneddon
+ * @author Ryan McCue
+ * @link http://simplepie.org/ SimplePie
+ * @license http://www.opensource.org/licenses/bsd-license.php BSD License
+ */
+
+/**
+ * Parses XML into something sane
+ *
+ *
+ * This class can be overloaded with {@see SimplePie::set_parser_class()}
+ *
+ * @package SimplePie
+ * @subpackage Parsing
+ */
+class SimplePie_Parser
+{
+ var $error_code;
+ var $error_string;
+ var $current_line;
+ var $current_column;
+ var $current_byte;
+ var $separator = ' ';
+ var $namespace = array('');
+ var $element = array('');
+ var $xml_base = array('');
+ var $xml_base_explicit = array(false);
+ var $xml_lang = array('');
+ var $data = array();
+ var $datas = array(array());
+ var $current_xhtml_construct = -1;
+ var $encoding;
+ protected $registry;
+
+ public function set_registry(SimplePie_Registry $registry)
+ {
+ $this->registry = $registry;
+ }
+
+ public function parse(&$data, $encoding)
+ {
+ // Use UTF-8 if we get passed US-ASCII, as every US-ASCII character is a UTF-8 character
+ if (strtoupper($encoding) === 'US-ASCII')
+ {
+ $this->encoding = 'UTF-8';
+ }
+ else
+ {
+ $this->encoding = $encoding;
+ }
+
+ // Strip BOM:
+ // UTF-32 Big Endian BOM
+ if (substr($data, 0, 4) === "\x00\x00\xFE\xFF")
+ {
+ $data = substr($data, 4);
+ }
+ // UTF-32 Little Endian BOM
+ elseif (substr($data, 0, 4) === "\xFF\xFE\x00\x00")
+ {
+ $data = substr($data, 4);
+ }
+ // UTF-16 Big Endian BOM
+ elseif (substr($data, 0, 2) === "\xFE\xFF")
+ {
+ $data = substr($data, 2);
+ }
+ // UTF-16 Little Endian BOM
+ elseif (substr($data, 0, 2) === "\xFF\xFE")
+ {
+ $data = substr($data, 2);
+ }
+ // UTF-8 BOM
+ elseif (substr($data, 0, 3) === "\xEF\xBB\xBF")
+ {
+ $data = substr($data, 3);
+ }
+
+ if (substr($data, 0, 5) === '<?xml' && strspn(substr($data, 5, 1), "\x09\x0A\x0D\x20") && ($pos = strpos($data, '?>')) !== false)
+ {
+ $declaration = $this->registry->create('XML_Declaration_Parser', array(substr($data, 5, $pos - 5)));
+ if ($declaration->parse())
+ {
+ $data = substr($data, $pos + 2);
+ $data = '<?xml version="' . $declaration->version . '" encoding="' . $encoding . '" standalone="' . (($declaration->standalone) ? 'yes' : 'no') . '"?>' . $data;
+ }
+ else
+ {
+ $this->error_string = 'SimplePie bug! Please report this!';
+ return false;
+ }
+ }
+
+ $return = true;
+
+ static $xml_is_sane = null;
+ if ($xml_is_sane === null)
+ {
+ $parser_check = xml_parser_create();
+ xml_parse_into_struct($parser_check, '<foo>&</foo>', $values);
+ xml_parser_free($parser_check);
+ $xml_is_sane = isset($values[0]['value']);
+ }
+
+ // Create the parser
+ if ($xml_is_sane)
+ {
+ $xml = xml_parser_create_ns($this->encoding, $this->separator);
+ xml_parser_set_option($xml, XML_OPTION_SKIP_WHITE, 1);
+ xml_parser_set_option($xml, XML_OPTION_CASE_FOLDING, 0);
+ xml_set_object($xml, $this);
+ xml_set_character_data_handler($xml, 'cdata');
+ xml_set_element_handler($xml, 'tag_open', 'tag_close');
+
+ // Parse!
+ if (!xml_parse($xml, $data, true))
+ {
+ $this->error_code = xml_get_error_code($xml);
+ $this->error_string = xml_error_string($this->error_code);
+ $return = false;
+ }
+ $this->current_line = xml_get_current_line_number($xml);
+ $this->current_column = xml_get_current_column_number($xml);
+ $this->current_byte = xml_get_current_byte_index($xml);
+ xml_parser_free($xml);
+ return $return;
+ }
+ else
+ {
+ libxml_clear_errors();
+ $xml = new XMLReader();
+ $xml->xml($data);
+ while (@$xml->read())
+ {
+ switch ($xml->nodeType)
+ {
+
+ case constant('XMLReader::END_ELEMENT'):
+ if ($xml->namespaceURI !== '')
+ {
+ $tagName = $xml->namespaceURI . $this->separator . $xml->localName;
+ }
+ else
+ {
+ $tagName = $xml->localName;
+ }
+ $this->tag_close(null, $tagName);
+ break;
+ case constant('XMLReader::ELEMENT'):
+ $empty = $xml->isEmptyElement;
+ if ($xml->namespaceURI !== '')
+ {
+ $tagName = $xml->namespaceURI . $this->separator . $xml->localName;
+ }
+ else
+ {
+ $tagName = $xml->localName;
+ }
+ $attributes = array();
+ while ($xml->moveToNextAttribute())
+ {
+ if ($xml->namespaceURI !== '')
+ {
+ $attrName = $xml->namespaceURI . $this->separator . $xml->localName;
+ }
+ else
+ {
+ $attrName = $xml->localName;
+ }
+ $attributes[$attrName] = $xml->value;
+ }
+ $this->tag_open(null, $tagName, $attributes);
+ if ($empty)
+ {
+ $this->tag_close(null, $tagName);
+ }
+ break;
+ case constant('XMLReader::TEXT'):
+
+ case constant('XMLReader::CDATA'):
+ $this->cdata(null, $xml->value);
+ break;
+ }
+ }
+ if ($error = libxml_get_last_error())
+ {
+ $this->error_code = $error->code;
+ $this->error_string = $error->message;
+ $this->current_line = $error->line;
+ $this->current_column = $error->column;
+ return false;
+ }
+ else
+ {
+ return true;
+ }
+ }
+ }
+
+ public function get_error_code()
+ {
+ return $this->error_code;
+ }
+
+ public function get_error_string()
+ {
+ return $this->error_string;
+ }
+
+ public function get_current_line()
+ {
+ return $this->current_line;
+ }
+
+ public function get_current_column()
+ {
+ return $this->current_column;
+ }
+
+ public function get_current_byte()
+ {
+ return $this->current_byte;
+ }
+
+ public function get_data()
+ {
+ return $this->data;
+ }
+
+ public function tag_open($parser, $tag, $attributes)
+ {
+ list($this->namespace[], $this->element[]) = $this->split_ns($tag);
+
+ $attribs = array();
+ foreach ($attributes as $name => $value)
+ {
+ list($attrib_namespace, $attribute) = $this->split_ns($name);
+ $attribs[$attrib_namespace][$attribute] = $value;
+ }
+
+ if (isset($attribs[SIMPLEPIE_NAMESPACE_XML]['base']))
+ {
+ $base = $this->registry->call('Misc', 'absolutize_url', array($attribs[SIMPLEPIE_NAMESPACE_XML]['base'], end($this->xml_base)));
+ if ($base !== false)
+ {
+ $this->xml_base[] = $base;
+ $this->xml_base_explicit[] = true;
+ }
+ }
+ else
+ {
+ $this->xml_base[] = end($this->xml_base);
+ $this->xml_base_explicit[] = end($this->xml_base_explicit);
+ }
+
+ if (isset($attribs[SIMPLEPIE_NAMESPACE_XML]['lang']))
+ {
+ $this->xml_lang[] = $attribs[SIMPLEPIE_NAMESPACE_XML]['lang'];
+ }
+ else
+ {
+ $this->xml_lang[] = end($this->xml_lang);
+ }
+
+ if ($this->current_xhtml_construct >= 0)
+ {
+ $this->current_xhtml_construct++;
+ if (end($this->namespace) === SIMPLEPIE_NAMESPACE_XHTML)
+ {
+ $this->data['data'] .= '<' . end($this->element);
+ if (isset($attribs['']))
+ {
+ foreach ($attribs[''] as $name => $value)
+ {
+ $this->data['data'] .= ' ' . $name . '="' . htmlspecialchars($value, ENT_COMPAT, $this->encoding) . '"';
+ }
+ }
+ $this->data['data'] .= '>';
+ }
+ }
+ else
+ {
+ $this->datas[] =& $this->data;
+ $this->data =& $this->data['child'][end($this->namespace)][end($this->element)][];
+ $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));
+ if ((end($this->namespace) === SIMPLEPIE_NAMESPACE_ATOM_03 && in_array(end($this->element), array('title', 'tagline', 'copyright', 'info', 'summary', 'content')) && isset($attribs['']['mode']) && $attribs['']['mode'] === 'xml')
+ || (end($this->namespace) === SIMPLEPIE_NAMESPACE_ATOM_10 && in_array(end($this->element), array('rights', 'subtitle', 'summary', 'info', 'title', 'content')) && isset($attribs['']['type']) && $attribs['']['type'] === 'xhtml')
+ || (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_20 && in_array(end($this->element), array('title')))
+ || (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_090 && in_array(end($this->element), array('title')))
+ || (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_10 && in_array(end($this->element), array('title'))))
+ {
+ $this->current_xhtml_construct = 0;
+ }
+ }
+ }
+
+ public function cdata($parser, $cdata)
+ {
+ if ($this->current_xhtml_construct >= 0)
+ {
+ $this->data['data'] .= htmlspecialchars($cdata, ENT_QUOTES, $this->encoding);
+ }
+ else
+ {
+ $this->data['data'] .= $cdata;
+ }
+ }
+
+ public function tag_close($parser, $tag)
+ {
+ if ($this->current_xhtml_construct >= 0)
+ {
+ $this->current_xhtml_construct--;
+ if (end($this->namespace) === SIMPLEPIE_NAMESPACE_XHTML && !in_array(end($this->element), array('area', 'base', 'basefont', 'br', 'col', 'frame', 'hr', 'img', 'input', 'isindex', 'link', 'meta', 'param')))
+ {
+ $this->data['data'] .= '</' . end($this->element) . '>';
+ }
+ }
+ if ($this->current_xhtml_construct === -1)
+ {
+ $this->data =& $this->datas[count($this->datas) - 1];
+ array_pop($this->datas);
+ }
+
+ array_pop($this->element);
+ array_pop($this->namespace);
+ array_pop($this->xml_base);
+ array_pop($this->xml_base_explicit);
+ array_pop($this->xml_lang);
+ }
+
+ public function split_ns($string)
+ {
+ static $cache = array();
+ if (!isset($cache[$string]))
+ {
+ if ($pos = strpos($string, $this->separator))
+ {
+ static $separator_length;
+ if (!$separator_length)
+ {
+ $separator_length = strlen($this->separator);
+ }
+ $namespace = substr($string, 0, $pos);
+ $local_name = substr($string, $pos + $separator_length);
+ if (strtolower($namespace) === SIMPLEPIE_NAMESPACE_ITUNES)
+ {
+ $namespace = SIMPLEPIE_NAMESPACE_ITUNES;
+ }
+
+ // Normalize the Media RSS namespaces
+ if ($namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG ||
+ $namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG2 ||
+ $namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG3 ||
+ $namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG4 ||
+ $namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG5 )
+ {
+ $namespace = SIMPLEPIE_NAMESPACE_MEDIARSS;
+ }
+ $cache[$string] = array($namespace, $local_name);
+ }
+ else
+ {
+ $cache[$string] = array('', $string);
+ }
+ }
+ return $cache[$string];
+ }
+}
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