1743 lines
62 KiB
PHP
1743 lines
62 KiB
PHP
<?php
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/**
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* Website: http://sourceforge.net/projects/simplehtmldom/
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* Additional projects that may be used: http://sourceforge.net/projects/debugobject/
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* Acknowledge: Jose Solorzano (https://sourceforge.net/projects/php-html/)
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* Contributions by:
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* Yousuke Kumakura (Attribute filters)
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* Vadim Voituk (Negative indexes supports of "find" method)
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* Antcs (Constructor with automatically load contents either text or file/url)
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*
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* all affected sections have comments starting with "PaperG"
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*
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* Paperg - Added case insensitive testing of the value of the selector.
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* Paperg - Added tag_start for the starting index of tags - NOTE: This works but not accurately.
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* This tag_start gets counted AFTER \r\n have been crushed out, and after the remove_noice calls so it will not reflect the REAL position of the tag in the source,
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* it will almost always be smaller by some amount.
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* We use this to determine how far into the file the tag in question is. This "percentage will never be accurate as the $dom->size is the "real" number of bytes the dom was created from.
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* but for most purposes, it's a really good estimation.
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* Paperg - Added the forceTagsClosed to the dom constructor. Forcing tags closed is great for malformed html, but it CAN lead to parsing errors.
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* Allow the user to tell us how much they trust the html.
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* Paperg add the text and plaintext to the selectors for the find syntax. plaintext implies text in the innertext of a node. text implies that the tag is a text node.
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* This allows for us to find tags based on the text they contain.
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* Create find_ancestor_tag to see if a tag is - at any level - inside of another specific tag.
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* Paperg: added parse_charset so that we know about the character set of the source document.
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* NOTE: If the user's system has a routine called get_last_retrieve_url_contents_content_type availalbe, we will assume it's returning the content-type header from the
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* last transfer or curl_exec, and we will parse that and use it in preference to any other method of charset detection.
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*
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* Found infinite loop in the case of broken html in restore_noise. Rewrote to protect from that.
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* PaperG (John Schlick) Added get_display_size for "IMG" tags.
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @author S.C. Chen <me578022@gmail.com>
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* @author John Schlick
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* @author Rus Carroll
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* @version 1.5 ($Rev: 210 $)
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* @package PlaceLocalInclude
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* @subpackage simple_html_dom
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*/
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/**
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* All of the Defines for the classes below.
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* @author S.C. Chen <me578022@gmail.com>
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*/
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define('HDOM_TYPE_ELEMENT', 1);
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define('HDOM_TYPE_COMMENT', 2);
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define('HDOM_TYPE_TEXT', 3);
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define('HDOM_TYPE_ENDTAG', 4);
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define('HDOM_TYPE_ROOT', 5);
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define('HDOM_TYPE_UNKNOWN', 6);
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define('HDOM_QUOTE_DOUBLE', 0);
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define('HDOM_QUOTE_SINGLE', 1);
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define('HDOM_QUOTE_NO', 3);
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define('HDOM_INFO_BEGIN', 0);
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define('HDOM_INFO_END', 1);
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define('HDOM_INFO_QUOTE', 2);
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define('HDOM_INFO_SPACE', 3);
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define('HDOM_INFO_TEXT', 4);
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define('HDOM_INFO_INNER', 5);
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define('HDOM_INFO_OUTER', 6);
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define('HDOM_INFO_ENDSPACE',7);
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define('DEFAULT_TARGET_CHARSET', 'UTF-8');
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define('DEFAULT_BR_TEXT', "\r\n");
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define('DEFAULT_SPAN_TEXT', " ");
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define('MAX_FILE_SIZE', 600000);
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// helper functions
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// -----------------------------------------------------------------------------
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// get html dom from file
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// $maxlen is defined in the code as PHP_STREAM_COPY_ALL which is defined as -1.
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function file_get_html($url, $use_include_path = false, $context=null, $offset = -1, $maxLen=-1, $lowercase = true, $forceTagsClosed=true, $target_charset = DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
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{
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// We DO force the tags to be terminated.
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$dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, $target_charset, $stripRN, $defaultBRText, $defaultSpanText);
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// For sourceforge users: uncomment the next line and comment the retreive_url_contents line 2 lines down if it is not already done.
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$contents = file_get_contents($url, $use_include_path, $context, $offset);
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// Paperg - use our own mechanism for getting the contents as we want to control the timeout.
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//$contents = retrieve_url_contents($url);
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if (empty($contents) || strlen($contents) > MAX_FILE_SIZE)
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{
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return false;
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}
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// The second parameter can force the selectors to all be lowercase.
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$dom->load($contents, $lowercase, $stripRN);
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return $dom;
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}
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// get html dom from string
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function str_get_html($str, $lowercase=true, $forceTagsClosed=true, $target_charset = DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
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{
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$dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, $target_charset, $stripRN, $defaultBRText, $defaultSpanText);
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if (empty($str) || strlen($str) > MAX_FILE_SIZE)
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{
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$dom->clear();
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return false;
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}
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$dom->load($str, $lowercase, $stripRN);
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return $dom;
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}
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// dump html dom tree
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function dump_html_tree($node, $show_attr=true, $deep=0)
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{
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$node->dump($node);
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}
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/**
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* simple html dom node
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* PaperG - added ability for "find" routine to lowercase the value of the selector.
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* PaperG - added $tag_start to track the start position of the tag in the total byte index
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*
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* @package PlaceLocalInclude
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*/
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class simple_html_dom_node
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{
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public $nodetype = HDOM_TYPE_TEXT;
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public $tag = 'text';
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public $attr = array();
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public $children = array();
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public $nodes = array();
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public $parent = null;
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// The "info" array - see HDOM_INFO_... for what each element contains.
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public $_ = array();
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public $tag_start = 0;
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private $dom = null;
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function __construct($dom)
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{
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$this->dom = $dom;
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$dom->nodes[] = $this;
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}
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function __destruct()
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{
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$this->clear();
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}
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function __toString()
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{
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return $this->outertext();
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}
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// clean up memory due to php5 circular references memory leak...
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function clear()
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{
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$this->dom = null;
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$this->nodes = null;
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$this->parent = null;
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$this->children = null;
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}
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// dump node's tree
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function dump($show_attr=true, $deep=0)
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{
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$lead = str_repeat(' ', $deep);
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echo $lead.$this->tag;
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if ($show_attr && count($this->attr)>0)
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{
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echo '(';
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foreach ($this->attr as $k=>$v)
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echo "[$k]=>\"".$this->$k.'", ';
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echo ')';
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}
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echo "\n";
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if ($this->nodes)
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{
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foreach ($this->nodes as $c)
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{
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$c->dump($show_attr, $deep+1);
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}
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}
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}
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// Debugging function to dump a single dom node with a bunch of information about it.
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function dump_node($echo=true)
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{
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$string = $this->tag;
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if (count($this->attr)>0)
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{
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$string .= '(';
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foreach ($this->attr as $k=>$v)
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{
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$string .= "[$k]=>\"".$this->$k.'", ';
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}
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$string .= ')';
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}
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if (count($this->_)>0)
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{
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$string .= ' $_ (';
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foreach ($this->_ as $k=>$v)
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{
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if (is_array($v))
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{
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$string .= "[$k]=>(";
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foreach ($v as $k2=>$v2)
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{
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$string .= "[$k2]=>\"".$v2.'", ';
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}
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$string .= ")";
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} else {
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$string .= "[$k]=>\"".$v.'", ';
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}
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}
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$string .= ")";
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}
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if (isset($this->text))
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{
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$string .= " text: (" . $this->text . ")";
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}
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$string .= " HDOM_INNER_INFO: '";
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if (isset($node->_[HDOM_INFO_INNER]))
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{
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$string .= $node->_[HDOM_INFO_INNER] . "'";
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}
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else
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{
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$string .= ' NULL ';
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}
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$string .= " children: " . count($this->children);
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$string .= " nodes: " . count($this->nodes);
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$string .= " tag_start: " . $this->tag_start;
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$string .= "\n";
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if ($echo)
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{
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echo $string;
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return;
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}
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else
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{
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return $string;
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}
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}
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// returns the parent of node
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// If a node is passed in, it will reset the parent of the current node to that one.
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function parent($parent=null)
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{
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// I am SURE that this doesn't work properly.
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// It fails to unset the current node from it's current parents nodes or children list first.
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if ($parent !== null)
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{
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$this->parent = $parent;
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$this->parent->nodes[] = $this;
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$this->parent->children[] = $this;
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}
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return $this->parent;
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}
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// verify that node has children
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function has_child()
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{
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return !empty($this->children);
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}
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// returns children of node
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function children($idx=-1)
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{
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if ($idx===-1)
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{
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return $this->children;
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}
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if (isset($this->children[$idx]))
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{
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return $this->children[$idx];
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}
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return null;
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}
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// returns the first child of node
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function first_child()
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{
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if (count($this->children)>0)
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{
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return $this->children[0];
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}
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return null;
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}
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// returns the last child of node
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function last_child()
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{
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if (($count=count($this->children))>0)
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{
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return $this->children[$count-1];
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}
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return null;
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}
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// returns the next sibling of node
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function next_sibling()
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{
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if ($this->parent===null)
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{
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return null;
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}
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$idx = 0;
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$count = count($this->parent->children);
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while ($idx<$count && $this!==$this->parent->children[$idx])
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{
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++$idx;
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}
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if (++$idx>=$count)
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{
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return null;
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}
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return $this->parent->children[$idx];
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}
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// returns the previous sibling of node
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function prev_sibling()
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{
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if ($this->parent===null) return null;
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$idx = 0;
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$count = count($this->parent->children);
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while ($idx<$count && $this!==$this->parent->children[$idx])
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++$idx;
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if (--$idx<0) return null;
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return $this->parent->children[$idx];
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}
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// function to locate a specific ancestor tag in the path to the root.
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function find_ancestor_tag($tag)
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{
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global $debug_object;
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if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
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// Start by including ourselves in the comparison.
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$returnDom = $this;
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while (!is_null($returnDom))
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{
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if (is_object($debug_object)) { $debug_object->debug_log(2, "Current tag is: " . $returnDom->tag); }
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if ($returnDom->tag == $tag)
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{
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break;
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}
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$returnDom = $returnDom->parent;
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}
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return $returnDom;
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}
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// get dom node's inner html
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function innertext()
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{
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if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER];
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if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
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$ret = '';
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foreach ($this->nodes as $n)
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$ret .= $n->outertext();
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return $ret;
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}
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// get dom node's outer text (with tag)
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function outertext()
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{
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global $debug_object;
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if (is_object($debug_object))
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{
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$text = '';
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if ($this->tag == 'text')
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{
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if (!empty($this->text))
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{
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$text = " with text: " . $this->text;
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}
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}
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$debug_object->debug_log(1, 'Innertext of tag: ' . $this->tag . $text);
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}
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if ($this->tag==='root') return $this->innertext();
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// trigger callback
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if ($this->dom && $this->dom->callback!==null)
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{
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call_user_func_array($this->dom->callback, array($this));
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}
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if (isset($this->_[HDOM_INFO_OUTER])) return $this->_[HDOM_INFO_OUTER];
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if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
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// render begin tag
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if ($this->dom && $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]])
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{
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$ret = $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]->makeup();
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} else {
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$ret = "";
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}
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// render inner text
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if (isset($this->_[HDOM_INFO_INNER]))
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{
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// If it's a br tag... don't return the HDOM_INNER_INFO that we may or may not have added.
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if ($this->tag != "br")
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{
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$ret .= $this->_[HDOM_INFO_INNER];
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}
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} else {
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if ($this->nodes)
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{
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foreach ($this->nodes as $n)
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{
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$ret .= $this->convert_text($n->outertext());
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}
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}
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}
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// render end tag
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if (isset($this->_[HDOM_INFO_END]) && $this->_[HDOM_INFO_END]!=0)
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$ret .= '</'.$this->tag.'>';
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return $ret;
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}
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// get dom node's plain text
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function text()
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{
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if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER];
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switch ($this->nodetype)
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{
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case HDOM_TYPE_TEXT: return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
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case HDOM_TYPE_COMMENT: return '';
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case HDOM_TYPE_UNKNOWN: return '';
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}
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if (strcasecmp($this->tag, 'script')===0) return '';
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if (strcasecmp($this->tag, 'style')===0) return '';
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$ret = '';
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// In rare cases, (always node type 1 or HDOM_TYPE_ELEMENT - observed for some span tags, and some p tags) $this->nodes is set to NULL.
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// NOTE: This indicates that there is a problem where it's set to NULL without a clear happening.
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// WHY is this happening?
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if (!is_null($this->nodes))
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{
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foreach ($this->nodes as $n)
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{
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$ret .= $this->convert_text($n->text());
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}
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// If this node is a span... add a space at the end of it so multiple spans don't run into each other. This is plaintext after all.
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if ($this->tag == "span")
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{
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$ret .= $this->dom->default_span_text;
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}
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}
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return $ret;
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}
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function xmltext()
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{
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$ret = $this->innertext();
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$ret = str_ireplace('<![CDATA[', '', $ret);
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$ret = str_replace(']]>', '', $ret);
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return $ret;
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}
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// build node's text with tag
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function makeup()
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{
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// text, comment, unknown
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if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
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$ret = '<'.$this->tag;
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$i = -1;
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foreach ($this->attr as $key=>$val)
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{
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++$i;
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// skip removed attribute
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if ($val===null || $val===false)
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continue;
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$ret .= $this->_[HDOM_INFO_SPACE][$i][0];
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//no value attr: nowrap, checked selected...
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if ($val===true)
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$ret .= $key;
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else {
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switch ($this->_[HDOM_INFO_QUOTE][$i])
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{
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case HDOM_QUOTE_DOUBLE: $quote = '"'; break;
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case HDOM_QUOTE_SINGLE: $quote = '\''; break;
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default: $quote = '';
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}
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$ret .= $key.$this->_[HDOM_INFO_SPACE][$i][1].'='.$this->_[HDOM_INFO_SPACE][$i][2].$quote.$val.$quote;
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}
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}
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$ret = $this->dom->restore_noise($ret);
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return $ret . $this->_[HDOM_INFO_ENDSPACE] . '>';
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}
|
|
|
|
// find elements by css selector
|
|
//PaperG - added ability for find to lowercase the value of the selector.
|
|
function find($selector, $idx=null, $lowercase=false)
|
|
{
|
|
$selectors = $this->parse_selector($selector);
|
|
if (($count=count($selectors))===0) return array();
|
|
$found_keys = array();
|
|
|
|
// find each selector
|
|
for ($c=0; $c<$count; ++$c)
|
|
{
|
|
// The change on the below line was documented on the sourceforge code tracker id 2788009
|
|
// used to be: if (($levle=count($selectors[0]))===0) return array();
|
|
if (($levle=count($selectors[$c]))===0) return array();
|
|
if (!isset($this->_[HDOM_INFO_BEGIN])) return array();
|
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|
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$head = array($this->_[HDOM_INFO_BEGIN]=>1);
|
|
|
|
// handle descendant selectors, no recursive!
|
|
for ($l=0; $l<$levle; ++$l)
|
|
{
|
|
$ret = array();
|
|
foreach ($head as $k=>$v)
|
|
{
|
|
$n = ($k===-1) ? $this->dom->root : $this->dom->nodes[$k];
|
|
//PaperG - Pass this optional parameter on to the seek function.
|
|
$n->seek($selectors[$c][$l], $ret, $lowercase);
|
|
}
|
|
$head = $ret;
|
|
}
|
|
|
|
foreach ($head as $k=>$v)
|
|
{
|
|
if (!isset($found_keys[$k]))
|
|
{
|
|
$found_keys[$k] = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
// sort keys
|
|
ksort($found_keys);
|
|
|
|
$found = array();
|
|
foreach ($found_keys as $k=>$v)
|
|
$found[] = $this->dom->nodes[$k];
|
|
|
|
// return nth-element or array
|
|
if (is_null($idx)) return $found;
|
|
else if ($idx<0) $idx = count($found) + $idx;
|
|
return (isset($found[$idx])) ? $found[$idx] : null;
|
|
}
|
|
|
|
// seek for given conditions
|
|
// PaperG - added parameter to allow for case insensitive testing of the value of a selector.
|
|
protected function seek($selector, &$ret, $lowercase=false)
|
|
{
|
|
global $debug_object;
|
|
if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
|
|
|
|
list($tag, $key, $val, $exp, $no_key) = $selector;
|
|
|
|
// xpath index
|
|
if ($tag && $key && is_numeric($key))
|
|
{
|
|
$count = 0;
|
|
foreach ($this->children as $c)
|
|
{
|
|
if ($tag==='*' || $tag===$c->tag) {
|
|
if (++$count==$key) {
|
|
$ret[$c->_[HDOM_INFO_BEGIN]] = 1;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
$end = (!empty($this->_[HDOM_INFO_END])) ? $this->_[HDOM_INFO_END] : 0;
|
|
if ($end==0) {
|
|
$parent = $this->parent;
|
|
while (!isset($parent->_[HDOM_INFO_END]) && $parent!==null) {
|
|
$end -= 1;
|
|
$parent = $parent->parent;
|
|
}
|
|
$end += $parent->_[HDOM_INFO_END];
|
|
}
|
|
|
|
for ($i=$this->_[HDOM_INFO_BEGIN]+1; $i<$end; ++$i) {
|
|
$node = $this->dom->nodes[$i];
|
|
|
|
$pass = true;
|
|
|
|
if ($tag==='*' && !$key) {
|
|
if (in_array($node, $this->children, true))
|
|
$ret[$i] = 1;
|
|
continue;
|
|
}
|
|
|
|
// compare tag
|
|
if ($tag && $tag!=$node->tag && $tag!=='*') {$pass=false;}
|
|
// compare key
|
|
if ($pass && $key) {
|
|
if ($no_key) {
|
|
if (isset($node->attr[$key])) $pass=false;
|
|
} else {
|
|
if (($key != "plaintext") && !isset($node->attr[$key])) $pass=false;
|
|
}
|
|
}
|
|
// compare value
|
|
if ($pass && $key && $val && $val!=='*') {
|
|
// If they have told us that this is a "plaintext" search then we want the plaintext of the node - right?
|
|
if ($key == "plaintext") {
|
|
// $node->plaintext actually returns $node->text();
|
|
$nodeKeyValue = $node->text();
|
|
} else {
|
|
// this is a normal search, we want the value of that attribute of the tag.
|
|
$nodeKeyValue = $node->attr[$key];
|
|
}
|
|
if (is_object($debug_object)) {$debug_object->debug_log(2, "testing node: " . $node->tag . " for attribute: " . $key . $exp . $val . " where nodes value is: " . $nodeKeyValue);}
|
|
|
|
//PaperG - If lowercase is set, do a case insensitive test of the value of the selector.
|
|
if ($lowercase) {
|
|
$check = $this->match($exp, strtolower($val), strtolower($nodeKeyValue));
|
|
} else {
|
|
$check = $this->match($exp, $val, $nodeKeyValue);
|
|
}
|
|
if (is_object($debug_object)) {$debug_object->debug_log(2, "after match: " . ($check ? "true" : "false"));}
|
|
|
|
// handle multiple class
|
|
if (!$check && strcasecmp($key, 'class')===0) {
|
|
foreach (explode(' ',$node->attr[$key]) as $k) {
|
|
// Without this, there were cases where leading, trailing, or double spaces lead to our comparing blanks - bad form.
|
|
if (!empty($k)) {
|
|
if ($lowercase) {
|
|
$check = $this->match($exp, strtolower($val), strtolower($k));
|
|
} else {
|
|
$check = $this->match($exp, $val, $k);
|
|
}
|
|
if ($check) break;
|
|
}
|
|
}
|
|
}
|
|
if (!$check) $pass = false;
|
|
}
|
|
if ($pass) $ret[$i] = 1;
|
|
unset($node);
|
|
}
|
|
// It's passed by reference so this is actually what this function returns.
|
|
if (is_object($debug_object)) {$debug_object->debug_log(1, "EXIT - ret: ", $ret);}
|
|
}
|
|
|
|
protected function match($exp, $pattern, $value) {
|
|
global $debug_object;
|
|
if (is_object($debug_object)) {$debug_object->debug_log_entry(1);}
|
|
|
|
switch ($exp) {
|
|
case '=':
|
|
return ($value===$pattern);
|
|
case '!=':
|
|
return ($value!==$pattern);
|
|
case '^=':
|
|
return preg_match("/^".preg_quote($pattern,'/')."/", $value);
|
|
case '$=':
|
|
return preg_match("/".preg_quote($pattern,'/')."$/", $value);
|
|
case '*=':
|
|
if ($pattern[0]=='/') {
|
|
return preg_match($pattern, $value);
|
|
}
|
|
return preg_match("/".$pattern."/i", $value);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
protected function parse_selector($selector_string) {
|
|
global $debug_object;
|
|
if (is_object($debug_object)) {$debug_object->debug_log_entry(1);}
|
|
|
|
// pattern of CSS selectors, modified from mootools
|
|
// Paperg: Add the colon to the attrbute, so that it properly finds <tag attr:ibute="something" > like google does.
|
|
// Note: if you try to look at this attribute, yo MUST use getAttribute since $dom->x:y will fail the php syntax check.
|
|
// Notice the \[ starting the attbute? and the @? following? This implies that an attribute can begin with an @ sign that is not captured.
|
|
// This implies that an html attribute specifier may start with an @ sign that is NOT captured by the expression.
|
|
// farther study is required to determine of this should be documented or removed.
|
|
// $pattern = "/([\w-:\*]*)(?:\#([\w-]+)|\.([\w-]+))?(?:\[@?(!?[\w-]+)(?:([!*^$]?=)[\"']?(.*?)[\"']?)?\])?([\/, ]+)/is";
|
|
$pattern = "/([\w-:\*]*)(?:\#([\w-]+)|\.([\w-]+))?(?:\[@?(!?[\w-:]+)(?:([!*^$]?=)[\"']?(.*?)[\"']?)?\])?([\/, ]+)/is";
|
|
preg_match_all($pattern, trim($selector_string).' ', $matches, PREG_SET_ORDER);
|
|
if (is_object($debug_object)) {$debug_object->debug_log(2, "Matches Array: ", $matches);}
|
|
|
|
$selectors = array();
|
|
$result = array();
|
|
//print_r($matches);
|
|
|
|
foreach ($matches as $m) {
|
|
$m[0] = trim($m[0]);
|
|
if ($m[0]==='' || $m[0]==='/' || $m[0]==='//') continue;
|
|
// for browser generated xpath
|
|
if ($m[1]==='tbody') continue;
|
|
|
|
list($tag, $key, $val, $exp, $no_key) = array($m[1], null, null, '=', false);
|
|
if (!empty($m[2])) {$key='id'; $val=$m[2];}
|
|
if (!empty($m[3])) {$key='class'; $val=$m[3];}
|
|
if (!empty($m[4])) {$key=$m[4];}
|
|
if (!empty($m[5])) {$exp=$m[5];}
|
|
if (!empty($m[6])) {$val=$m[6];}
|
|
|
|
// convert to lowercase
|
|
if ($this->dom->lowercase) {$tag=strtolower($tag); $key=strtolower($key);}
|
|
//elements that do NOT have the specified attribute
|
|
if (isset($key[0]) && $key[0]==='!') {$key=substr($key, 1); $no_key=true;}
|
|
|
|
$result[] = array($tag, $key, $val, $exp, $no_key);
|
|
if (trim($m[7])===',') {
|
|
$selectors[] = $result;
|
|
$result = array();
|
|
}
|
|
}
|
|
if (count($result)>0)
|
|
$selectors[] = $result;
|
|
return $selectors;
|
|
}
|
|
|
|
function __get($name)
|
|
{
|
|
if (isset($this->attr[$name]))
|
|
{
|
|
return $this->convert_text($this->attr[$name]);
|
|
}
|
|
switch ($name)
|
|
{
|
|
case 'outertext': return $this->outertext();
|
|
case 'innertext': return $this->innertext();
|
|
case 'plaintext': return $this->text();
|
|
case 'xmltext': return $this->xmltext();
|
|
default: return array_key_exists($name, $this->attr);
|
|
}
|
|
}
|
|
|
|
function __set($name, $value)
|
|
{
|
|
global $debug_object;
|
|
if (is_object($debug_object)) {$debug_object->debug_log_entry(1);}
|
|
|
|
switch ($name)
|
|
{
|
|
case 'outertext': return $this->_[HDOM_INFO_OUTER] = $value;
|
|
case 'innertext':
|
|
if (isset($this->_[HDOM_INFO_TEXT])) return $this->_[HDOM_INFO_TEXT] = $value;
|
|
return $this->_[HDOM_INFO_INNER] = $value;
|
|
}
|
|
if (!isset($this->attr[$name]))
|
|
{
|
|
$this->_[HDOM_INFO_SPACE][] = array(' ', '', '');
|
|
$this->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE;
|
|
}
|
|
$this->attr[$name] = $value;
|
|
}
|
|
|
|
function __isset($name)
|
|
{
|
|
switch ($name)
|
|
{
|
|
case 'outertext': return true;
|
|
case 'innertext': return true;
|
|
case 'plaintext': return true;
|
|
}
|
|
//no value attr: nowrap, checked selected...
|
|
return (array_key_exists($name, $this->attr)) ? true : isset($this->attr[$name]);
|
|
}
|
|
|
|
function __unset($name) {
|
|
if (isset($this->attr[$name]))
|
|
unset($this->attr[$name]);
|
|
}
|
|
|
|
// PaperG - Function to convert the text from one character set to another if the two sets are not the same.
|
|
function convert_text($text)
|
|
{
|
|
global $debug_object;
|
|
if (is_object($debug_object)) {$debug_object->debug_log_entry(1);}
|
|
|
|
$converted_text = $text;
|
|
|
|
$sourceCharset = "";
|
|
$targetCharset = "";
|
|
|
|
if ($this->dom)
|
|
{
|
|
$sourceCharset = strtoupper($this->dom->_charset);
|
|
$targetCharset = strtoupper($this->dom->_target_charset);
|
|
}
|
|
if (is_object($debug_object)) {$debug_object->debug_log(3, "source charset: " . $sourceCharset . " target charaset: " . $targetCharset);}
|
|
|
|
if (!empty($sourceCharset) && !empty($targetCharset) && (strcasecmp($sourceCharset, $targetCharset) != 0))
|
|
{
|
|
// Check if the reported encoding could have been incorrect and the text is actually already UTF-8
|
|
if ((strcasecmp($targetCharset, 'UTF-8') == 0) && ($this->is_utf8($text)))
|
|
{
|
|
$converted_text = $text;
|
|
}
|
|
else
|
|
{
|
|
$converted_text = iconv($sourceCharset, $targetCharset, $text);
|
|
}
|
|
}
|
|
|
|
// Lets make sure that we don't have that silly BOM issue with any of the utf-8 text we output.
|
|
if ($targetCharset == 'UTF-8')
|
|
{
|
|
if (substr($converted_text, 0, 3) == "\xef\xbb\xbf")
|
|
{
|
|
$converted_text = substr($converted_text, 3);
|
|
}
|
|
if (substr($converted_text, -3) == "\xef\xbb\xbf")
|
|
{
|
|
$converted_text = substr($converted_text, 0, -3);
|
|
}
|
|
}
|
|
|
|
return $converted_text;
|
|
}
|
|
|
|
/**
|
|
* Returns true if $string is valid UTF-8 and false otherwise.
|
|
*
|
|
* @param mixed $str String to be tested
|
|
* @return boolean
|
|
*/
|
|
static function is_utf8($str)
|
|
{
|
|
$c=0; $b=0;
|
|
$bits=0;
|
|
$len=strlen($str);
|
|
for($i=0; $i<$len; $i++)
|
|
{
|
|
$c=ord($str[$i]);
|
|
if($c > 128)
|
|
{
|
|
if(($c >= 254)) return false;
|
|
elseif($c >= 252) $bits=6;
|
|
elseif($c >= 248) $bits=5;
|
|
elseif($c >= 240) $bits=4;
|
|
elseif($c >= 224) $bits=3;
|
|
elseif($c >= 192) $bits=2;
|
|
else return false;
|
|
if(($i+$bits) > $len) return false;
|
|
while($bits > 1)
|
|
{
|
|
$i++;
|
|
$b=ord($str[$i]);
|
|
if($b < 128 || $b > 191) return false;
|
|
$bits--;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
/*
|
|
function is_utf8($string)
|
|
{
|
|
//this is buggy
|
|
return (utf8_encode(utf8_decode($string)) == $string);
|
|
}
|
|
*/
|
|
|
|
/**
|
|
* Function to try a few tricks to determine the displayed size of an img on the page.
|
|
* NOTE: This will ONLY work on an IMG tag. Returns FALSE on all other tag types.
|
|
*
|
|
* @author John Schlick
|
|
* @version April 19 2012
|
|
* @return array an array containing the 'height' and 'width' of the image on the page or -1 if we can't figure it out.
|
|
*/
|
|
function get_display_size()
|
|
{
|
|
global $debug_object;
|
|
|
|
$width = -1;
|
|
$height = -1;
|
|
|
|
if ($this->tag !== 'img')
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// See if there is aheight or width attribute in the tag itself.
|
|
if (isset($this->attr['width']))
|
|
{
|
|
$width = $this->attr['width'];
|
|
}
|
|
|
|
if (isset($this->attr['height']))
|
|
{
|
|
$height = $this->attr['height'];
|
|
}
|
|
|
|
// Now look for an inline style.
|
|
if (isset($this->attr['style']))
|
|
{
|
|
// Thanks to user gnarf from stackoverflow for this regular expression.
|
|
$attributes = array();
|
|
preg_match_all("/([\w-]+)\s*:\s*([^;]+)\s*;?/", $this->attr['style'], $matches, PREG_SET_ORDER);
|
|
foreach ($matches as $match) {
|
|
$attributes[$match[1]] = $match[2];
|
|
}
|
|
|
|
// If there is a width in the style attributes:
|
|
if (isset($attributes['width']) && $width == -1)
|
|
{
|
|
// check that the last two characters are px (pixels)
|
|
if (strtolower(substr($attributes['width'], -2)) == 'px')
|
|
{
|
|
$proposed_width = substr($attributes['width'], 0, -2);
|
|
// Now make sure that it's an integer and not something stupid.
|
|
if (filter_var($proposed_width, FILTER_VALIDATE_INT))
|
|
{
|
|
$width = $proposed_width;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If there is a width in the style attributes:
|
|
if (isset($attributes['height']) && $height == -1)
|
|
{
|
|
// check that the last two characters are px (pixels)
|
|
if (strtolower(substr($attributes['height'], -2)) == 'px')
|
|
{
|
|
$proposed_height = substr($attributes['height'], 0, -2);
|
|
// Now make sure that it's an integer and not something stupid.
|
|
if (filter_var($proposed_height, FILTER_VALIDATE_INT))
|
|
{
|
|
$height = $proposed_height;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// Future enhancement:
|
|
// Look in the tag to see if there is a class or id specified that has a height or width attribute to it.
|
|
|
|
// Far future enhancement
|
|
// Look at all the parent tags of this image to see if they specify a class or id that has an img selector that specifies a height or width
|
|
// Note that in this case, the class or id will have the img subselector for it to apply to the image.
|
|
|
|
// ridiculously far future development
|
|
// If the class or id is specified in a SEPARATE css file thats not on the page, go get it and do what we were just doing for the ones on the page.
|
|
|
|
$result = array('height' => $height,
|
|
'width' => $width);
|
|
return $result;
|
|
}
|
|
|
|
// camel naming conventions
|
|
function getAllAttributes() {return $this->attr;}
|
|
function getAttribute($name) {return $this->__get($name);}
|
|
function setAttribute($name, $value) {$this->__set($name, $value);}
|
|
function hasAttribute($name) {return $this->__isset($name);}
|
|
function removeAttribute($name) {$this->__set($name, null);}
|
|
function getElementById($id) {return $this->find("#$id", 0);}
|
|
function getElementsById($id, $idx=null) {return $this->find("#$id", $idx);}
|
|
function getElementByTagName($name) {return $this->find($name, 0);}
|
|
function getElementsByTagName($name, $idx=null) {return $this->find($name, $idx);}
|
|
function parentNode() {return $this->parent();}
|
|
function childNodes($idx=-1) {return $this->children($idx);}
|
|
function firstChild() {return $this->first_child();}
|
|
function lastChild() {return $this->last_child();}
|
|
function nextSibling() {return $this->next_sibling();}
|
|
function previousSibling() {return $this->prev_sibling();}
|
|
function hasChildNodes() {return $this->has_child();}
|
|
function nodeName() {return $this->tag;}
|
|
function appendChild($node) {$node->parent($this); return $node;}
|
|
|
|
}
|
|
|
|
/**
|
|
* simple html dom parser
|
|
* Paperg - in the find routine: allow us to specify that we want case insensitive testing of the value of the selector.
|
|
* Paperg - change $size from protected to public so we can easily access it
|
|
* Paperg - added ForceTagsClosed in the constructor which tells us whether we trust the html or not. Default is to NOT trust it.
|
|
*
|
|
* @package PlaceLocalInclude
|
|
*/
|
|
class simple_html_dom
|
|
{
|
|
public $root = null;
|
|
public $nodes = array();
|
|
public $callback = null;
|
|
public $lowercase = false;
|
|
// Used to keep track of how large the text was when we started.
|
|
public $original_size;
|
|
public $size;
|
|
protected $pos;
|
|
protected $doc;
|
|
protected $char;
|
|
protected $cursor;
|
|
protected $parent;
|
|
protected $noise = array();
|
|
protected $token_blank = " \t\r\n";
|
|
protected $token_equal = ' =/>';
|
|
protected $token_slash = " />\r\n\t";
|
|
protected $token_attr = ' >';
|
|
// Note that this is referenced by a child node, and so it needs to be public for that node to see this information.
|
|
public $_charset = '';
|
|
public $_target_charset = '';
|
|
protected $default_br_text = "";
|
|
public $default_span_text = "";
|
|
|
|
// use isset instead of in_array, performance boost about 30%...
|
|
protected $self_closing_tags = array('img'=>1, 'br'=>1, 'input'=>1, 'meta'=>1, 'link'=>1, 'hr'=>1, 'base'=>1, 'embed'=>1, 'spacer'=>1);
|
|
protected $block_tags = array('root'=>1, 'body'=>1, 'form'=>1, 'div'=>1, 'span'=>1, 'table'=>1);
|
|
// Known sourceforge issue #2977341
|
|
// B tags that are not closed cause us to return everything to the end of the document.
|
|
protected $optional_closing_tags = array(
|
|
'tr'=>array('tr'=>1, 'td'=>1, 'th'=>1),
|
|
'th'=>array('th'=>1),
|
|
'td'=>array('td'=>1),
|
|
'li'=>array('li'=>1),
|
|
'dt'=>array('dt'=>1, 'dd'=>1),
|
|
'dd'=>array('dd'=>1, 'dt'=>1),
|
|
'dl'=>array('dd'=>1, 'dt'=>1),
|
|
'p'=>array('p'=>1),
|
|
'nobr'=>array('nobr'=>1),
|
|
'b'=>array('b'=>1),
|
|
'option'=>array('option'=>1),
|
|
);
|
|
|
|
function __construct($str=null, $lowercase=true, $forceTagsClosed=true, $target_charset=DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
|
|
{
|
|
if ($str)
|
|
{
|
|
if (preg_match("/^http:\/\//i",$str) || is_file($str))
|
|
{
|
|
$this->load_file($str);
|
|
}
|
|
else
|
|
{
|
|
$this->load($str, $lowercase, $stripRN, $defaultBRText, $defaultSpanText);
|
|
}
|
|
}
|
|
// Forcing tags to be closed implies that we don't trust the html, but it can lead to parsing errors if we SHOULD trust the html.
|
|
if (!$forceTagsClosed) {
|
|
$this->optional_closing_array=array();
|
|
}
|
|
$this->_target_charset = $target_charset;
|
|
}
|
|
|
|
function __destruct()
|
|
{
|
|
$this->clear();
|
|
}
|
|
|
|
// load html from string
|
|
function load($str, $lowercase=true, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
|
|
{
|
|
global $debug_object;
|
|
|
|
// prepare
|
|
$this->prepare($str, $lowercase, $stripRN, $defaultBRText, $defaultSpanText);
|
|
// strip out cdata
|
|
$this->remove_noise("'<!\[CDATA\[(.*?)\]\]>'is", true);
|
|
// strip out comments
|
|
$this->remove_noise("'<!--(.*?)-->'is");
|
|
// Per sourceforge http://sourceforge.net/tracker/?func=detail&aid=2949097&group_id=218559&atid=1044037
|
|
// Script tags removal now preceeds style tag removal.
|
|
// strip out <script> tags
|
|
$this->remove_noise("'<\s*script[^>]*[^/]>(.*?)<\s*/\s*script\s*>'is");
|
|
$this->remove_noise("'<\s*script\s*>(.*?)<\s*/\s*script\s*>'is");
|
|
// strip out <style> tags
|
|
$this->remove_noise("'<\s*style[^>]*[^/]>(.*?)<\s*/\s*style\s*>'is");
|
|
$this->remove_noise("'<\s*style\s*>(.*?)<\s*/\s*style\s*>'is");
|
|
// strip out preformatted tags
|
|
$this->remove_noise("'<\s*(?:code)[^>]*>(.*?)<\s*/\s*(?:code)\s*>'is");
|
|
// strip out server side scripts
|
|
$this->remove_noise("'(<\?)(.*?)(\?>)'s", true);
|
|
// strip smarty scripts
|
|
$this->remove_noise("'(\{\w)(.*?)(\})'s", true);
|
|
|
|
// parsing
|
|
while ($this->parse());
|
|
// end
|
|
$this->root->_[HDOM_INFO_END] = $this->cursor;
|
|
$this->parse_charset();
|
|
|
|
// make load function chainable
|
|
return $this;
|
|
|
|
}
|
|
|
|
// load html from file
|
|
function load_file()
|
|
{
|
|
$args = func_get_args();
|
|
$this->load(call_user_func_array('file_get_contents', $args), true);
|
|
// Throw an error if we can't properly load the dom.
|
|
if (($error=error_get_last())!==null) {
|
|
$this->clear();
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// set callback function
|
|
function set_callback($function_name)
|
|
{
|
|
$this->callback = $function_name;
|
|
}
|
|
|
|
// remove callback function
|
|
function remove_callback()
|
|
{
|
|
$this->callback = null;
|
|
}
|
|
|
|
// save dom as string
|
|
function save($filepath='')
|
|
{
|
|
$ret = $this->root->innertext();
|
|
if ($filepath!=='') file_put_contents($filepath, $ret, LOCK_EX);
|
|
return $ret;
|
|
}
|
|
|
|
// find dom node by css selector
|
|
// Paperg - allow us to specify that we want case insensitive testing of the value of the selector.
|
|
function find($selector, $idx=null, $lowercase=false)
|
|
{
|
|
return $this->root->find($selector, $idx, $lowercase);
|
|
}
|
|
|
|
// clean up memory due to php5 circular references memory leak...
|
|
function clear()
|
|
{
|
|
foreach ($this->nodes as $n) {$n->clear(); $n = null;}
|
|
// This add next line is documented in the sourceforge repository. 2977248 as a fix for ongoing memory leaks that occur even with the use of clear.
|
|
if (isset($this->children)) foreach ($this->children as $n) {$n->clear(); $n = null;}
|
|
if (isset($this->parent)) {$this->parent->clear(); unset($this->parent);}
|
|
if (isset($this->root)) {$this->root->clear(); unset($this->root);}
|
|
unset($this->doc);
|
|
unset($this->noise);
|
|
}
|
|
|
|
function dump($show_attr=true)
|
|
{
|
|
$this->root->dump($show_attr);
|
|
}
|
|
|
|
// prepare HTML data and init everything
|
|
protected function prepare($str, $lowercase=true, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
|
|
{
|
|
$this->clear();
|
|
|
|
// set the length of content before we do anything to it.
|
|
$this->size = strlen($str);
|
|
// Save the original size of the html that we got in. It might be useful to someone.
|
|
$this->original_size = $this->size;
|
|
|
|
//before we save the string as the doc... strip out the \r \n's if we are told to.
|
|
if ($stripRN) {
|
|
$str = str_replace("\r", " ", $str);
|
|
$str = str_replace("\n", " ", $str);
|
|
|
|
// set the length of content since we have changed it.
|
|
$this->size = strlen($str);
|
|
}
|
|
|
|
$this->doc = $str;
|
|
$this->pos = 0;
|
|
$this->cursor = 1;
|
|
$this->noise = array();
|
|
$this->nodes = array();
|
|
$this->lowercase = $lowercase;
|
|
$this->default_br_text = $defaultBRText;
|
|
$this->default_span_text = $defaultSpanText;
|
|
$this->root = new simple_html_dom_node($this);
|
|
$this->root->tag = 'root';
|
|
$this->root->_[HDOM_INFO_BEGIN] = -1;
|
|
$this->root->nodetype = HDOM_TYPE_ROOT;
|
|
$this->parent = $this->root;
|
|
if ($this->size>0) $this->char = $this->doc[0];
|
|
}
|
|
|
|
// parse html content
|
|
protected function parse()
|
|
{
|
|
if (($s = $this->copy_until_char('<'))==='')
|
|
{
|
|
return $this->read_tag();
|
|
}
|
|
|
|
// text
|
|
$node = new simple_html_dom_node($this);
|
|
++$this->cursor;
|
|
$node->_[HDOM_INFO_TEXT] = $s;
|
|
$this->link_nodes($node, false);
|
|
return true;
|
|
}
|
|
|
|
// PAPERG - dkchou - added this to try to identify the character set of the page we have just parsed so we know better how to spit it out later.
|
|
// NOTE: IF you provide a routine called get_last_retrieve_url_contents_content_type which returns the CURLINFO_CONTENT_TYPE from the last curl_exec
|
|
// (or the content_type header from the last transfer), we will parse THAT, and if a charset is specified, we will use it over any other mechanism.
|
|
protected function parse_charset()
|
|
{
|
|
global $debug_object;
|
|
|
|
$charset = null;
|
|
|
|
if (!is_fn('get_last_retrieve_url_contents_content_type'))
|
|
{
|
|
$contentTypeHeader = get_last_retrieve_url_contents_content_type();
|
|
$success = preg_match('/charset=(.+)/', $contentTypeHeader, $matches);
|
|
if ($success)
|
|
{
|
|
$charset = $matches[1];
|
|
if (is_object($debug_object)) {$debug_object->debug_log(2, 'header content-type found charset of: ' . $charset);}
|
|
}
|
|
|
|
}
|
|
|
|
if (empty($charset))
|
|
{
|
|
$el = $this->root->find('meta[http-equiv=Content-Type]',0, true);
|
|
if (!empty($el))
|
|
{
|
|
$fullvalue = $el->content;
|
|
if (is_object($debug_object)) {$debug_object->debug_log(2, 'meta content-type tag found' . $fullvalue);}
|
|
|
|
if (!empty($fullvalue))
|
|
{
|
|
$success = preg_match('/charset=(.+)/i', $fullvalue, $matches);
|
|
if ($success)
|
|
{
|
|
$charset = $matches[1];
|
|
}
|
|
else
|
|
{
|
|
// If there is a meta tag, and they don't specify the character set, research says that it's typically ISO-8859-1
|
|
if (is_object($debug_object)) {$debug_object->debug_log(2, 'meta content-type tag couldn\'t be parsed. using iso-8859 default.');}
|
|
$charset = 'ISO-8859-1';
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// If we couldn't find a charset above, then lets try to detect one based on the text we got...
|
|
if (empty($charset))
|
|
{
|
|
// Use this in case mb_detect_charset isn't installed/loaded on this machine.
|
|
$charset = false;
|
|
if (!is_fn('mb_detect_encoding'))
|
|
{
|
|
// Have php try to detect the encoding from the text given to us.
|
|
$charset = mb_detect_encoding($this->root->plaintext . "ascii", $encoding_list = array( "UTF-8", "CP1252" ) );
|
|
if (is_object($debug_object)) {$debug_object->debug_log(2, 'mb_detect found: ' . $charset);}
|
|
}
|
|
|
|
// and if this doesn't work... then we need to just wrongheadedly assume it's UTF-8 so that we can move on - cause this will usually give us most of what we need...
|
|
if ($charset === false)
|
|
{
|
|
if (is_object($debug_object)) {$debug_object->debug_log(2, 'since mb_detect failed - using default of utf-8');}
|
|
$charset = 'UTF-8';
|
|
}
|
|
}
|
|
|
|
// Since CP1252 is a superset, if we get one of it's subsets, we want it instead.
|
|
if ((strtolower($charset) == strtolower('ISO-8859-1')) || (strtolower($charset) == strtolower('Latin1')) || (strtolower($charset) == strtolower('Latin-1')))
|
|
{
|
|
if (is_object($debug_object)) {$debug_object->debug_log(2, 'replacing ' . $charset . ' with CP1252 as its a superset');}
|
|
$charset = 'CP1252';
|
|
}
|
|
|
|
if (is_object($debug_object)) {$debug_object->debug_log(1, 'EXIT - ' . $charset);}
|
|
|
|
return $this->_charset = $charset;
|
|
}
|
|
|
|
// read tag info
|
|
protected function read_tag()
|
|
{
|
|
if ($this->char!=='<')
|
|
{
|
|
$this->root->_[HDOM_INFO_END] = $this->cursor;
|
|
return false;
|
|
}
|
|
$begin_tag_pos = $this->pos;
|
|
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
|
|
// end tag
|
|
if ($this->char==='/')
|
|
{
|
|
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
// This represents the change in the simple_html_dom trunk from revision 180 to 181.
|
|
// $this->skip($this->token_blank_t);
|
|
$this->skip($this->token_blank);
|
|
$tag = $this->copy_until_char('>');
|
|
|
|
// skip attributes in end tag
|
|
if (($pos = strpos($tag, ' '))!==false)
|
|
$tag = substr($tag, 0, $pos);
|
|
|
|
$parent_lower = strtolower($this->parent->tag);
|
|
$tag_lower = strtolower($tag);
|
|
|
|
if ($parent_lower!==$tag_lower)
|
|
{
|
|
if (isset($this->optional_closing_tags[$parent_lower]) && isset($this->block_tags[$tag_lower]))
|
|
{
|
|
$this->parent->_[HDOM_INFO_END] = 0;
|
|
$org_parent = $this->parent;
|
|
|
|
while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower)
|
|
$this->parent = $this->parent->parent;
|
|
|
|
if (strtolower($this->parent->tag)!==$tag_lower) {
|
|
$this->parent = $org_parent; // restore origonal parent
|
|
if ($this->parent->parent) $this->parent = $this->parent->parent;
|
|
$this->parent->_[HDOM_INFO_END] = $this->cursor;
|
|
return $this->as_text_node($tag);
|
|
}
|
|
}
|
|
else if (($this->parent->parent) && isset($this->block_tags[$tag_lower]))
|
|
{
|
|
$this->parent->_[HDOM_INFO_END] = 0;
|
|
$org_parent = $this->parent;
|
|
|
|
while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower)
|
|
$this->parent = $this->parent->parent;
|
|
|
|
if (strtolower($this->parent->tag)!==$tag_lower)
|
|
{
|
|
$this->parent = $org_parent; // restore origonal parent
|
|
$this->parent->_[HDOM_INFO_END] = $this->cursor;
|
|
return $this->as_text_node($tag);
|
|
}
|
|
}
|
|
else if (($this->parent->parent) && strtolower($this->parent->parent->tag)===$tag_lower)
|
|
{
|
|
$this->parent->_[HDOM_INFO_END] = 0;
|
|
$this->parent = $this->parent->parent;
|
|
}
|
|
else
|
|
return $this->as_text_node($tag);
|
|
}
|
|
|
|
$this->parent->_[HDOM_INFO_END] = $this->cursor;
|
|
if ($this->parent->parent) $this->parent = $this->parent->parent;
|
|
|
|
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
return true;
|
|
}
|
|
|
|
$node = new simple_html_dom_node($this);
|
|
$node->_[HDOM_INFO_BEGIN] = $this->cursor;
|
|
++$this->cursor;
|
|
$tag = $this->copy_until($this->token_slash);
|
|
$node->tag_start = $begin_tag_pos;
|
|
|
|
// doctype, cdata & comments...
|
|
if (isset($tag[0]) && $tag[0]==='!') {
|
|
$node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until_char('>');
|
|
|
|
if (isset($tag[2]) && $tag[1]==='-' && $tag[2]==='-') {
|
|
$node->nodetype = HDOM_TYPE_COMMENT;
|
|
$node->tag = 'comment';
|
|
} else {
|
|
$node->nodetype = HDOM_TYPE_UNKNOWN;
|
|
$node->tag = 'unknown';
|
|
}
|
|
if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>';
|
|
$this->link_nodes($node, true);
|
|
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
return true;
|
|
}
|
|
|
|
// text
|
|
if ($pos=strpos($tag, '<')!==false) {
|
|
$tag = '<' . substr($tag, 0, -1);
|
|
$node->_[HDOM_INFO_TEXT] = $tag;
|
|
$this->link_nodes($node, false);
|
|
$this->char = $this->doc[--$this->pos]; // prev
|
|
return true;
|
|
}
|
|
|
|
if (!preg_match("/^[\w-:]+$/", $tag)) {
|
|
$node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until('<>');
|
|
if ($this->char==='<') {
|
|
$this->link_nodes($node, false);
|
|
return true;
|
|
}
|
|
|
|
if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>';
|
|
$this->link_nodes($node, false);
|
|
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
return true;
|
|
}
|
|
|
|
// begin tag
|
|
$node->nodetype = HDOM_TYPE_ELEMENT;
|
|
$tag_lower = strtolower($tag);
|
|
$node->tag = ($this->lowercase) ? $tag_lower : $tag;
|
|
|
|
// handle optional closing tags
|
|
if (isset($this->optional_closing_tags[$tag_lower]) )
|
|
{
|
|
while (isset($this->optional_closing_tags[$tag_lower][strtolower($this->parent->tag)]))
|
|
{
|
|
$this->parent->_[HDOM_INFO_END] = 0;
|
|
$this->parent = $this->parent->parent;
|
|
}
|
|
$node->parent = $this->parent;
|
|
}
|
|
|
|
$guard = 0; // prevent infinity loop
|
|
$space = array($this->copy_skip($this->token_blank), '', '');
|
|
|
|
// attributes
|
|
do
|
|
{
|
|
if ($this->char!==null && $space[0]==='')
|
|
{
|
|
break;
|
|
}
|
|
$name = $this->copy_until($this->token_equal);
|
|
if ($guard===$this->pos)
|
|
{
|
|
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
continue;
|
|
}
|
|
$guard = $this->pos;
|
|
|
|
// handle endless '<'
|
|
if ($this->pos>=$this->size-1 && $this->char!=='>') {
|
|
$node->nodetype = HDOM_TYPE_TEXT;
|
|
$node->_[HDOM_INFO_END] = 0;
|
|
$node->_[HDOM_INFO_TEXT] = '<'.$tag . $space[0] . $name;
|
|
$node->tag = 'text';
|
|
$this->link_nodes($node, false);
|
|
return true;
|
|
}
|
|
|
|
// handle mismatch '<'
|
|
if ($this->doc[$this->pos-1]=='<') {
|
|
$node->nodetype = HDOM_TYPE_TEXT;
|
|
$node->tag = 'text';
|
|
$node->attr = array();
|
|
$node->_[HDOM_INFO_END] = 0;
|
|
$node->_[HDOM_INFO_TEXT] = substr($this->doc, $begin_tag_pos, $this->pos-$begin_tag_pos-1);
|
|
$this->pos -= 2;
|
|
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
$this->link_nodes($node, false);
|
|
return true;
|
|
}
|
|
|
|
if ($name!=='/' && $name!=='') {
|
|
$space[1] = $this->copy_skip($this->token_blank);
|
|
$name = $this->restore_noise($name);
|
|
if ($this->lowercase) $name = strtolower($name);
|
|
if ($this->char==='=') {
|
|
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
$this->parse_attr($node, $name, $space);
|
|
}
|
|
else {
|
|
//no value attr: nowrap, checked selected...
|
|
$node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO;
|
|
$node->attr[$name] = true;
|
|
if ($this->char!='>') $this->char = $this->doc[--$this->pos]; // prev
|
|
}
|
|
$node->_[HDOM_INFO_SPACE][] = $space;
|
|
$space = array($this->copy_skip($this->token_blank), '', '');
|
|
}
|
|
else
|
|
break;
|
|
} while ($this->char!=='>' && $this->char!=='/');
|
|
|
|
$this->link_nodes($node, true);
|
|
$node->_[HDOM_INFO_ENDSPACE] = $space[0];
|
|
|
|
// check self closing
|
|
if ($this->copy_until_char_escape('>')==='/')
|
|
{
|
|
$node->_[HDOM_INFO_ENDSPACE] .= '/';
|
|
$node->_[HDOM_INFO_END] = 0;
|
|
}
|
|
else
|
|
{
|
|
// reset parent
|
|
if (!isset($this->self_closing_tags[strtolower($node->tag)])) $this->parent = $node;
|
|
}
|
|
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
|
|
// If it's a BR tag, we need to set it's text to the default text.
|
|
// This way when we see it in plaintext, we can generate formatting that the user wants.
|
|
// since a br tag never has sub nodes, this works well.
|
|
if ($node->tag == "br")
|
|
{
|
|
$node->_[HDOM_INFO_INNER] = $this->default_br_text;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// parse attributes
|
|
protected function parse_attr($node, $name, &$space)
|
|
{
|
|
// Per sourceforge: http://sourceforge.net/tracker/?func=detail&aid=3061408&group_id=218559&atid=1044037
|
|
// If the attribute is already defined inside a tag, only pay atetntion to the first one as opposed to the last one.
|
|
if (isset($node->attr[$name]))
|
|
{
|
|
return;
|
|
}
|
|
|
|
$space[2] = $this->copy_skip($this->token_blank);
|
|
switch ($this->char) {
|
|
case '"':
|
|
$node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE;
|
|
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
$node->attr[$name] = $this->restore_noise($this->copy_until_char_escape('"'));
|
|
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
break;
|
|
case '\'':
|
|
$node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_SINGLE;
|
|
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
$node->attr[$name] = $this->restore_noise($this->copy_until_char_escape('\''));
|
|
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
break;
|
|
default:
|
|
$node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO;
|
|
$node->attr[$name] = $this->restore_noise($this->copy_until($this->token_attr));
|
|
}
|
|
// PaperG: Attributes should not have \r or \n in them, that counts as html whitespace.
|
|
$node->attr[$name] = str_replace("\r", "", $node->attr[$name]);
|
|
$node->attr[$name] = str_replace("\n", "", $node->attr[$name]);
|
|
// PaperG: If this is a "class" selector, lets get rid of the preceeding and trailing space since some people leave it in the multi class case.
|
|
if ($name == "class") {
|
|
$node->attr[$name] = trim($node->attr[$name]);
|
|
}
|
|
}
|
|
|
|
// link node's parent
|
|
protected function link_nodes(&$node, $is_child)
|
|
{
|
|
$node->parent = $this->parent;
|
|
$this->parent->nodes[] = $node;
|
|
if ($is_child)
|
|
{
|
|
$this->parent->children[] = $node;
|
|
}
|
|
}
|
|
|
|
// as a text node
|
|
protected function as_text_node($tag)
|
|
{
|
|
$node = new simple_html_dom_node($this);
|
|
++$this->cursor;
|
|
$node->_[HDOM_INFO_TEXT] = '</' . $tag . '>';
|
|
$this->link_nodes($node, false);
|
|
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
return true;
|
|
}
|
|
|
|
protected function skip($chars)
|
|
{
|
|
$this->pos += strspn($this->doc, $chars, $this->pos);
|
|
$this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
}
|
|
|
|
protected function copy_skip($chars)
|
|
{
|
|
$pos = $this->pos;
|
|
$len = strspn($this->doc, $chars, $pos);
|
|
$this->pos += $len;
|
|
$this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
if ($len===0) return '';
|
|
return substr($this->doc, $pos, $len);
|
|
}
|
|
|
|
protected function copy_until($chars)
|
|
{
|
|
$pos = $this->pos;
|
|
$len = strcspn($this->doc, $chars, $pos);
|
|
$this->pos += $len;
|
|
$this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
|
return substr($this->doc, $pos, $len);
|
|
}
|
|
|
|
protected function copy_until_char($char)
|
|
{
|
|
if ($this->char===null) return '';
|
|
|
|
if (($pos = strpos($this->doc, $char, $this->pos))===false) {
|
|
$ret = substr($this->doc, $this->pos, $this->size-$this->pos);
|
|
$this->char = null;
|
|
$this->pos = $this->size;
|
|
return $ret;
|
|
}
|
|
|
|
if ($pos===$this->pos) return '';
|
|
$pos_old = $this->pos;
|
|
$this->char = $this->doc[$pos];
|
|
$this->pos = $pos;
|
|
return substr($this->doc, $pos_old, $pos-$pos_old);
|
|
}
|
|
|
|
protected function copy_until_char_escape($char)
|
|
{
|
|
if ($this->char===null) return '';
|
|
|
|
$start = $this->pos;
|
|
while (1)
|
|
{
|
|
if (($pos = strpos($this->doc, $char, $start))===false)
|
|
{
|
|
$ret = substr($this->doc, $this->pos, $this->size-$this->pos);
|
|
$this->char = null;
|
|
$this->pos = $this->size;
|
|
return $ret;
|
|
}
|
|
|
|
if ($pos===$this->pos) return '';
|
|
|
|
if ($this->doc[$pos-1]==='\\') {
|
|
$start = $pos+1;
|
|
continue;
|
|
}
|
|
|
|
$pos_old = $this->pos;
|
|
$this->char = $this->doc[$pos];
|
|
$this->pos = $pos;
|
|
return substr($this->doc, $pos_old, $pos-$pos_old);
|
|
}
|
|
}
|
|
|
|
// remove noise from html content
|
|
// save the noise in the $this->noise array.
|
|
protected function remove_noise($pattern, $remove_tag=false)
|
|
{
|
|
global $debug_object;
|
|
if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
|
|
|
|
$count = preg_match_all($pattern, $this->doc, $matches, PREG_SET_ORDER|PREG_OFFSET_CAPTURE);
|
|
|
|
for ($i=$count-1; $i>-1; --$i)
|
|
{
|
|
$key = '___noise___'.sprintf('% 5d', count($this->noise)+1000);
|
|
if (is_object($debug_object)) { $debug_object->debug_log(2, 'key is: ' . $key); }
|
|
$idx = ($remove_tag) ? 0 : 1;
|
|
$this->noise[$key] = $matches[$i][$idx][0];
|
|
$this->doc = substr_replace($this->doc, $key, $matches[$i][$idx][1], strlen($matches[$i][$idx][0]));
|
|
}
|
|
|
|
// reset the length of content
|
|
$this->size = strlen($this->doc);
|
|
if ($this->size>0)
|
|
{
|
|
$this->char = $this->doc[0];
|
|
}
|
|
}
|
|
|
|
// restore noise to html content
|
|
function restore_noise($text)
|
|
{
|
|
global $debug_object;
|
|
if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
|
|
|
|
while (($pos=strpos($text, '___noise___'))!==false)
|
|
{
|
|
// Sometimes there is a broken piece of markup, and we don't GET the pos+11 etc... token which indicates a problem outside of us...
|
|
if (strlen($text) > $pos+15)
|
|
{
|
|
$key = '___noise___'.$text[$pos+11].$text[$pos+12].$text[$pos+13].$text[$pos+14].$text[$pos+15];
|
|
if (is_object($debug_object)) { $debug_object->debug_log(2, 'located key of: ' . $key); }
|
|
|
|
if (isset($this->noise[$key]))
|
|
{
|
|
$text = substr($text, 0, $pos).$this->noise[$key].substr($text, $pos+16);
|
|
}
|
|
else
|
|
{
|
|
// do this to prevent an infinite loop.
|
|
$text = substr($text, 0, $pos).'UNDEFINED NOISE FOR KEY: '.$key . substr($text, $pos+16);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// There is no valid key being given back to us... We must get rid of the ___noise___ or we will have a problem.
|
|
$text = substr($text, 0, $pos).'NO NUMERIC NOISE KEY' . substr($text, $pos+11);
|
|
}
|
|
}
|
|
return $text;
|
|
}
|
|
|
|
// Sometimes we NEED one of the noise elements.
|
|
function search_noise($text)
|
|
{
|
|
global $debug_object;
|
|
if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
|
|
|
|
foreach($this->noise as $noiseElement)
|
|
{
|
|
if (strpos($noiseElement, $text)!==false)
|
|
{
|
|
return $noiseElement;
|
|
}
|
|
}
|
|
}
|
|
function __toString()
|
|
{
|
|
return $this->root->innertext();
|
|
}
|
|
|
|
function __get($name)
|
|
{
|
|
switch ($name)
|
|
{
|
|
case 'outertext':
|
|
return $this->root->innertext();
|
|
case 'innertext':
|
|
return $this->root->innertext();
|
|
case 'plaintext':
|
|
return $this->root->text();
|
|
case 'charset':
|
|
return $this->_charset;
|
|
case 'target_charset':
|
|
return $this->_target_charset;
|
|
}
|
|
}
|
|
|
|
// camel naming conventions
|
|
function childNodes($idx=-1) {return $this->root->childNodes($idx);}
|
|
function firstChild() {return $this->root->first_child();}
|
|
function lastChild() {return $this->root->last_child();}
|
|
function createElement($name, $value=null) {return @str_get_html("<$name>$value</$name>")->first_child();}
|
|
function createTextNode($value) {return @end(str_get_html($value)->nodes);}
|
|
function getElementById($id) {return $this->find("#$id", 0);}
|
|
function getElementsById($id, $idx=null) {return $this->find("#$id", $idx);}
|
|
function getElementByTagName($name) {return $this->find($name, 0);}
|
|
function getElementsByTagName($name, $idx=-1) {return $this->find($name, $idx);}
|
|
function loadFile() {$args = func_get_args();$this->load_file($args);}
|
|
}
|
|
|
|
?>
|