fb8a064e3a
This fixes an issue where larger pages could not be loaded because the size limit is too small
2172 lines
No EOL
63 KiB
PHP
2172 lines
No EOL
63 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 Rev. 1.7 (214)
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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', 10000000);
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/** Contents between curly braces "{" and "}" are interpreted as text */
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define('HDOM_SMARTY_AS_TEXT', 1);
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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 = 0, $maxLen=-1, $lowercase = true, $forceTagsClosed=true, $target_charset = DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
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{
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// Ensure maximum length is greater than zero
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if($maxLen <= 0) { $maxLen = MAX_FILE_SIZE; }
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// We DO force the tags to be terminated.
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$dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, $target_charset, $stripRN, $defaultBRText, $defaultSpanText);
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// For sourceforge users: uncomment the next line and comment the retrieve_url_contents line 2 lines down if it is not already done.
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$contents = file_get_contents($url, $use_include_path, $context, $offset, $maxLen);
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// Paperg - use our own mechanism for getting the contents as we want to control the timeout.
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//$contents = retrieve_url_contents($url);
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if (empty($contents) || strlen($contents) > $maxLen)
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{
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return false;
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}
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// The second parameter can force the selectors to all be lowercase.
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$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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/**
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* Node type
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*
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* Default is {@see HDOM_TYPE_TEXT}
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*
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* @var int
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*/
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public $nodetype = HDOM_TYPE_TEXT;
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/**
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* Tag name
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*
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* Default is 'text'
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*
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* @var string
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*/
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public $tag = 'text';
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/**
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* List of attributes
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*
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* @var array
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*/
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public $attr = array();
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/**
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* List of child node objects
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*
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* @var array
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*/
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public $children = array();
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public $nodes = array();
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/**
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* The parent node object
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*
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* @var object|null
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*/
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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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/**
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* Start position of the tag in the document
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*
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* @var int
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*/
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public $tag_start = 0;
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/**
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* The DOM object
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*
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* @var object|null
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*/
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private $dom = null;
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/**
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* Construct new node object
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*
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* Adds itself to the list of DOM Nodes {@see simple_html_dom::$nodes}
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*/
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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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/**
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* Return or set parent node
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*
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* @param object|null $parent (optional) The parent node, `null` to return
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* the current parent node.
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* @return object|null The parent node
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*/
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function parent($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 $this->parent;
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}
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/**
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* @return bool True if the node has at least one child node
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*/
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function has_child()
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{
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return !empty($this->children);
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}
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/**
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* Get child node at specified index
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||
*
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* @param int $idx The index of the child node to return, `-1` to return all
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* child nodes.
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* @return object|array|null The child node at the specified index, all child
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* nodes or null if the index is invalid.
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*/
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function children($idx=-1)
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{
|
||
if ($idx===-1)
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{
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return $this->children;
|
||
}
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if (isset($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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/**
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* Get first child node
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*
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* @return object|null The first child node or null if the current node has
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* no child nodes.
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*
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* @todo Use `empty()` instead of `count()` to improve performance on large
|
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* arrays.
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*/
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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 $this->children[0];
|
||
}
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return null;
|
||
}
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||
|
||
/**
|
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* Get last child node
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||
*
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* @return object|null The last child node or null if the current node has
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* no child nodes.
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*
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* @todo Use `end()` to slightly improve performance on large arrays.
|
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*/
|
||
function last_child()
|
||
{
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||
if (($count=count($this->children))>0)
|
||
{
|
||
return $this->children[$count-1];
|
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}
|
||
return null;
|
||
}
|
||
|
||
/**
|
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* Get next sibling node
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||
*
|
||
* @return object|null The sibling node or null if the current node has no
|
||
* sibling nodes.
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||
*/
|
||
function next_sibling()
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||
{
|
||
if ($this->parent===null)
|
||
{
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||
return null;
|
||
}
|
||
|
||
$idx = 0;
|
||
$count = count($this->parent->children);
|
||
while ($idx<$count && $this!==$this->parent->children[$idx])
|
||
{
|
||
++$idx;
|
||
}
|
||
if (++$idx>=$count)
|
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{
|
||
return null;
|
||
}
|
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return $this->parent->children[$idx];
|
||
}
|
||
|
||
/**
|
||
* Get previous sibling node
|
||
*
|
||
* @return object|null The sibling node or null if the current node has no
|
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* sibling nodes.
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||
*/
|
||
function prev_sibling()
|
||
{
|
||
if ($this->parent===null) return null;
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||
$idx = 0;
|
||
$count = count($this->parent->children);
|
||
while ($idx<$count && $this!==$this->parent->children[$idx])
|
||
++$idx;
|
||
if (--$idx<0) return null;
|
||
return $this->parent->children[$idx];
|
||
}
|
||
|
||
/**
|
||
* Traverse ancestors to the first matching tag.
|
||
*
|
||
* @param string $tag Tag to find
|
||
* @return object|null First matching node in the DOM tree or null if no
|
||
* match was found.
|
||
*
|
||
* @todo Null is returned implicitly by calling ->parent on the root node.
|
||
* This behaviour could change at any time, rendering this function invalid.
|
||
*/
|
||
function find_ancestor_tag($tag)
|
||
{
|
||
global $debug_object;
|
||
if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
|
||
|
||
// Start by including ourselves in the comparison.
|
||
$returnDom = $this;
|
||
|
||
while (!is_null($returnDom))
|
||
{
|
||
if (is_object($debug_object)) { $debug_object->debug_log(2, "Current tag is: " . $returnDom->tag); }
|
||
|
||
if ($returnDom->tag == $tag)
|
||
{
|
||
break;
|
||
}
|
||
$returnDom = $returnDom->parent;
|
||
}
|
||
return $returnDom;
|
||
}
|
||
|
||
/**
|
||
* Get node's inner text (everything inside the opening and closing tags)
|
||
*
|
||
* @return string
|
||
*/
|
||
function innertext()
|
||
{
|
||
if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER];
|
||
if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
|
||
|
||
$ret = '';
|
||
foreach ($this->nodes as $n)
|
||
$ret .= $n->outertext();
|
||
return $ret;
|
||
}
|
||
|
||
/**
|
||
* Get node's outer text (everything including the opening and closing tags)
|
||
*
|
||
* @return string
|
||
*/
|
||
function outertext()
|
||
{
|
||
global $debug_object;
|
||
if (is_object($debug_object))
|
||
{
|
||
$text = '';
|
||
if ($this->tag == 'text')
|
||
{
|
||
if (!empty($this->text))
|
||
{
|
||
$text = " with text: " . $this->text;
|
||
}
|
||
}
|
||
$debug_object->debug_log(1, 'Innertext of tag: ' . $this->tag . $text);
|
||
}
|
||
|
||
if ($this->tag==='root') return $this->innertext();
|
||
|
||
// trigger callback
|
||
if ($this->dom && $this->dom->callback!==null)
|
||
{
|
||
call_user_func_array($this->dom->callback, array($this));
|
||
}
|
||
|
||
if (isset($this->_[HDOM_INFO_OUTER])) return $this->_[HDOM_INFO_OUTER];
|
||
if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
|
||
|
||
// render begin tag
|
||
if ($this->dom && $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]])
|
||
{
|
||
$ret = $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]->makeup();
|
||
} else {
|
||
$ret = "";
|
||
}
|
||
|
||
// render inner text
|
||
if (isset($this->_[HDOM_INFO_INNER]))
|
||
{
|
||
// If it's a br tag... don't return the HDOM_INNER_INFO that we may or may not have added.
|
||
if ($this->tag != "br")
|
||
{
|
||
$ret .= $this->_[HDOM_INFO_INNER];
|
||
}
|
||
} else {
|
||
if ($this->nodes)
|
||
{
|
||
foreach ($this->nodes as $n)
|
||
{
|
||
$ret .= $this->convert_text($n->outertext());
|
||
}
|
||
}
|
||
}
|
||
|
||
// render end tag
|
||
if (isset($this->_[HDOM_INFO_END]) && $this->_[HDOM_INFO_END]!=0)
|
||
$ret .= '</'.$this->tag.'>';
|
||
return $ret;
|
||
}
|
||
|
||
/**
|
||
* Get node's plain text (everything excluding all tags)
|
||
*
|
||
* @return string
|
||
*/
|
||
function text()
|
||
{
|
||
if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER];
|
||
switch ($this->nodetype)
|
||
{
|
||
case HDOM_TYPE_TEXT: return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
|
||
case HDOM_TYPE_COMMENT: return '';
|
||
case HDOM_TYPE_UNKNOWN: return '';
|
||
}
|
||
if (strcasecmp($this->tag, 'script')===0) return '';
|
||
if (strcasecmp($this->tag, 'style')===0) return '';
|
||
|
||
$ret = '';
|
||
// In rare cases, (always node type 1 or HDOM_TYPE_ELEMENT - observed for some span tags, and some p tags) $this->nodes is set to NULL.
|
||
// NOTE: This indicates that there is a problem where it's set to NULL without a clear happening.
|
||
// WHY is this happening?
|
||
if (!is_null($this->nodes))
|
||
{
|
||
foreach ($this->nodes as $n)
|
||
{
|
||
// Start paragraph after a blank line
|
||
if ($n->tag == 'p')
|
||
{
|
||
$ret .= "\n\n";
|
||
}
|
||
|
||
$ret .= $this->convert_text($n->text());
|
||
|
||
// 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.
|
||
if ($n->tag == "span")
|
||
{
|
||
$ret .= $this->dom->default_span_text;
|
||
}
|
||
}
|
||
}
|
||
return trim($ret);
|
||
}
|
||
|
||
/**
|
||
* Get node's xml text (inner text as a CDATA section)
|
||
*
|
||
* @return string
|
||
*/
|
||
function xmltext()
|
||
{
|
||
$ret = $this->innertext();
|
||
$ret = str_ireplace('<![CDATA[', '', $ret);
|
||
$ret = str_replace(']]>', '', $ret);
|
||
return $ret;
|
||
}
|
||
|
||
// build node's text with tag
|
||
function makeup()
|
||
{
|
||
// text, comment, unknown
|
||
if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
|
||
|
||
$ret = '<'.$this->tag;
|
||
$i = -1;
|
||
|
||
foreach ($this->attr as $key=>$val)
|
||
{
|
||
++$i;
|
||
|
||
// skip removed attribute
|
||
if ($val===null || $val===false)
|
||
continue;
|
||
|
||
$ret .= $this->_[HDOM_INFO_SPACE][$i][0];
|
||
//no value attr: nowrap, checked selected...
|
||
if ($val===true)
|
||
$ret .= $key;
|
||
else {
|
||
switch ($this->_[HDOM_INFO_QUOTE][$i])
|
||
{
|
||
case HDOM_QUOTE_DOUBLE: $quote = '"'; break;
|
||
case HDOM_QUOTE_SINGLE: $quote = '\''; break;
|
||
default: $quote = '';
|
||
}
|
||
$ret .= $key.$this->_[HDOM_INFO_SPACE][$i][1].'='.$this->_[HDOM_INFO_SPACE][$i][2].$quote.$val.$quote;
|
||
}
|
||
}
|
||
$ret = $this->dom->restore_noise($ret);
|
||
return $ret . $this->_[HDOM_INFO_ENDSPACE] . '>';
|
||
}
|
||
|
||
// find elements by css selector
|
||
//PaperG - added ability for find to lowercase the value of the selector.
|
||
function find($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();
|
||
|
||
$head = array($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
|
||
{
|
||
/**
|
||
* The root node of the document
|
||
*
|
||
* @var object
|
||
*/
|
||
public $root = null;
|
||
|
||
/**
|
||
* List of nodes in the current DOM
|
||
*
|
||
* @var array
|
||
*/
|
||
public $nodes = array();
|
||
|
||
/**
|
||
* Callback function to run for each element in the DOM.
|
||
*
|
||
* @var callable|null
|
||
*/
|
||
public $callback = null;
|
||
|
||
/**
|
||
* Indicates how tags and attributes are matched
|
||
*
|
||
* @var bool When set to **true** tags and attributes will be converted to
|
||
* lowercase before matching.
|
||
*/
|
||
public $lowercase = false;
|
||
|
||
/**
|
||
* Original document size
|
||
*
|
||
* Holds the original document size.
|
||
*
|
||
* @var int
|
||
*/
|
||
public $original_size;
|
||
|
||
/**
|
||
* Current document size
|
||
*
|
||
* Holds the current document size. The document size is determined by the
|
||
* string length of ({@see simple_html_dom::$doc}).
|
||
*
|
||
* _Note_: Using this variable is more efficient than calling `strlen($doc)`
|
||
*
|
||
* @var int
|
||
* */
|
||
public $size;
|
||
|
||
/**
|
||
* Current position in the document
|
||
*
|
||
* @var int
|
||
*/
|
||
protected $pos;
|
||
|
||
/**
|
||
* The document
|
||
*
|
||
* @var string
|
||
*/
|
||
protected $doc;
|
||
|
||
/**
|
||
* Current character
|
||
*
|
||
* Holds the current character at position {@see simple_html_dom::$pos} in
|
||
* the document {@see simple_html_dom::$doc}
|
||
*
|
||
* _Note_: Using this variable is more efficient than calling `substr($doc, $pos, 1)`
|
||
*
|
||
* @var string
|
||
*/
|
||
protected $char;
|
||
|
||
protected $cursor;
|
||
|
||
/**
|
||
* Parent node of the next node detected by the parser
|
||
*
|
||
* @var object
|
||
*/
|
||
protected $parent;
|
||
protected $noise = array();
|
||
|
||
/**
|
||
* Tokens considered blank in HTML
|
||
*
|
||
* @var string
|
||
*/
|
||
protected $token_blank = " \t\r\n";
|
||
|
||
/**
|
||
* Tokens to identify the equal sign for attributes, stopping either at the
|
||
* closing tag ("/" i.e. "<html />") or the end of an opening tag (">" i.e.
|
||
* "<html>")
|
||
*
|
||
* @var string
|
||
*/
|
||
protected $token_equal = ' =/>';
|
||
|
||
/**
|
||
* Tokens to identify the end of a tag name. A tag name either ends on the
|
||
* ending slash ("/" i.e. "<html/>") or whitespace ("\s\r\n\t")
|
||
*
|
||
* @var string
|
||
*/
|
||
protected $token_slash = " />\r\n\t";
|
||
|
||
/**
|
||
* Tokens to identify the end of an attribute
|
||
*
|
||
* @var string
|
||
*/
|
||
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 = '';
|
||
|
||
/**
|
||
* Innertext for <br> elements
|
||
*
|
||
* @var string
|
||
*/
|
||
protected $default_br_text = "";
|
||
|
||
/**
|
||
* Suffix for <span> elements
|
||
*
|
||
* @var string
|
||
*/
|
||
public $default_span_text = "";
|
||
|
||
/**
|
||
* Defines a list of self-closing tags (Void elements) according to the HTML
|
||
* Specification
|
||
*
|
||
* _Remarks_:
|
||
* - Use `isset()` instead of `in_array()` on array elements to boost
|
||
* performance about 30%
|
||
* - Sort elements by name for better readability!
|
||
*
|
||
* @link https://www.w3.org/TR/html HTML Specification
|
||
* @link https://www.w3.org/TR/html/syntax.html#void-elements Void elements
|
||
*/
|
||
protected $self_closing_tags = array(
|
||
'area'=>1,
|
||
'base'=>1,
|
||
'br'=>1,
|
||
'col'=>1,
|
||
'embed'=>1,
|
||
'hr'=>1,
|
||
'img'=>1,
|
||
'input'=>1,
|
||
'link'=>1,
|
||
'meta'=>1,
|
||
'param'=>1,
|
||
'source'=>1,
|
||
'track'=>1,
|
||
'wbr'=>1
|
||
);
|
||
|
||
/**
|
||
* Defines a list of tags which - if closed - close all optional closing
|
||
* elements within if they haven't been closed yet. (So, an element where
|
||
* neither opening nor closing tag is omissible consistently closes every
|
||
* optional closing element within)
|
||
*
|
||
* _Remarks_:
|
||
* - Use `isset()` instead of `in_array()` on array elements to boost
|
||
* performance about 30%
|
||
* - Sort elements by name for better readability!
|
||
*/
|
||
protected $block_tags = array(
|
||
'body'=>1,
|
||
'div'=>1,
|
||
'form'=>1,
|
||
'root'=>1,
|
||
'span'=>1,
|
||
'table'=>1
|
||
);
|
||
|
||
/**
|
||
* Defines elements whose end tag is omissible.
|
||
*
|
||
* * key = Name of an element whose end tag is omissible.
|
||
* * value = Names of elements whose end tag is omissible, that are closed
|
||
* by the current element.
|
||
*
|
||
* _Remarks_:
|
||
* - Use `isset()` instead of `in_array()` on array elements to boost
|
||
* performance about 30%
|
||
* - Sort elements by name for better readability!
|
||
*
|
||
* **Example**
|
||
*
|
||
* An `li` element’s end tag may be omitted if the `li` element is immediately
|
||
* followed by another `li` element. To do that, add following element to the
|
||
* array:
|
||
*
|
||
* ```php
|
||
* 'li' => array('li'),
|
||
* ```
|
||
*
|
||
* With this, the following two examples are considered equal. Note that the
|
||
* second example is missing the closing tags on `li` elements.
|
||
*
|
||
* ```html
|
||
* <ul><li>First Item</li><li>Second Item</li></ul>
|
||
* ```
|
||
*
|
||
* <ul><li>First Item</li><li>Second Item</li></ul>
|
||
*
|
||
* ```html
|
||
* <ul><li>First Item<li>Second Item</ul>
|
||
* ```
|
||
*
|
||
* <ul><li>First Item<li>Second Item</ul>
|
||
*
|
||
* @var array A two-dimensional array where the key is the name of an
|
||
* element whose end tag is omissible and the value is an array of elements
|
||
* whose end tag is omissible, that are closed by the current element.
|
||
*
|
||
* @link https://www.w3.org/TR/html/syntax.html#optional-tags Optional tags
|
||
*
|
||
* @todo The implementation of optional closing tags doesn't work in all cases
|
||
* because it only consideres elements who close other optional closing
|
||
* tags, not taking into account that some (non-blocking) tags should close
|
||
* these optional closing tags. For example, the end tag for "p" is omissible
|
||
* and can be closed by an "address" element, whose end tag is NOT omissible.
|
||
* Currently a "p" element without closing tag stops at the next "p" element
|
||
* or blocking tag, even if it contains other elements.
|
||
*
|
||
* @todo Known sourceforge issue #2977341
|
||
* B tags that are not closed cause us to return everything to the end of
|
||
* the document.
|
||
*/
|
||
protected $optional_closing_tags = array(
|
||
'b'=>array('b'=>1), // Not optional, see https://www.w3.org/TR/html/textlevel-semantics.html#the-b-element
|
||
'dd'=>array('dd'=>1, 'dt'=>1),
|
||
'dl'=>array('dd'=>1, 'dt'=>1), // Not optional, see https://www.w3.org/TR/html/grouping-content.html#the-dl-element
|
||
'dt'=>array('dd'=>1, 'dt'=>1),
|
||
'li'=>array('li'=>1),
|
||
'optgroup'=>array('optgroup'=>1, 'option'=>1),
|
||
'option'=>array('optgroup'=>1, 'option'=>1),
|
||
'p'=>array('p'=>1),
|
||
'rp'=>array('rp'=>1, 'rt'=>1),
|
||
'rt'=>array('rp'=>1, 'rt'=>1),
|
||
'td'=>array('td'=>1, 'th'=>1),
|
||
'th'=>array('td'=>1, 'th'=>1),
|
||
'tr'=>array('td'=>1, 'th'=>1, 'tr'=>1),
|
||
);
|
||
|
||
function __construct($str=null, $lowercase=true, $forceTagsClosed=true, $target_charset=DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT, $options=0)
|
||
{
|
||
if ($str)
|
||
{
|
||
if (preg_match("/^http:\/\//i",$str) || is_file($str))
|
||
{
|
||
$this->load_file($str);
|
||
}
|
||
else
|
||
{
|
||
$this->load($str, $lowercase, $stripRN, $defaultBRText, $defaultSpanText, $options);
|
||
}
|
||
}
|
||
// Forcing tags to be closed implies that we don't trust the html, but it can lead to parsing errors if we SHOULD trust the html.
|
||
if (!$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, $options=0)
|
||
{
|
||
global $debug_object;
|
||
|
||
// prepare
|
||
$this->prepare($str, $lowercase, $defaultBRText, $defaultSpanText);
|
||
|
||
// 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");
|
||
$this->remove_noise("'<\s*script\s*>(.*?)<\s*/\s*script\s*>'is");
|
||
|
||
// strip out the \r \n's if we are told to.
|
||
if ($stripRN) {
|
||
$this->doc = str_replace("\r", " ", $this->doc);
|
||
$this->doc = str_replace("\n", " ", $this->doc);
|
||
|
||
// set the length of content since we have changed it.
|
||
$this->size = strlen($this->doc);
|
||
}
|
||
|
||
// strip out cdata
|
||
$this->remove_noise("'<!\[CDATA\[(.*?)\]\]>'is", true);
|
||
// strip out comments
|
||
$this->remove_noise("'<!--(.*?)-->'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
|
||
$this->remove_noise("'(<\?)(.*?)(\?>)'s", true);
|
||
|
||
if($options & HDOM_SMARTY_AS_TEXT) { // Strip Smarty scripts
|
||
$this->remove_noise("'(\{\w)(.*?)(\})'s", true);
|
||
}
|
||
|
||
// parsing
|
||
$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()
|
||
{
|
||
$args = func_get_args();
|
||
|
||
if($doc = call_user_func_array('file_get_contents', $args) !== false) {
|
||
$this->load($doc, true);
|
||
} else {
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Set the callback function
|
||
*
|
||
* @param callable $function_name Callback function to run for each element
|
||
* in the DOM.
|
||
* @return void
|
||
*/
|
||
function set_callback($function_name)
|
||
{
|
||
$this->callback = $function_name;
|
||
}
|
||
|
||
/**
|
||
* Remove callback function
|
||
*
|
||
* @return void
|
||
*/
|
||
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, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
|
||
{
|
||
$this->clear();
|
||
|
||
$this->doc = trim($str);
|
||
$this->size = strlen($this->doc);
|
||
$this->original_size = $this->size; // Save the original size of the html that we got in. It might be useful to someone.
|
||
$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 = $this->doc[0];
|
||
}
|
||
|
||
/**
|
||
* Parse HTML content
|
||
*
|
||
* @return bool True on success
|
||
*/
|
||
protected function parse()
|
||
{
|
||
while (true) {
|
||
// Read next tag if there is no text between current position and the
|
||
// next opening tag.
|
||
if (($s = $this->copy_until_char('<'))==='')
|
||
{
|
||
if($this->read_tag()) {
|
||
continue;
|
||
} else {
|
||
return true;
|
||
}
|
||
}
|
||
|
||
// Add a text node for text between tags
|
||
$node = new simple_html_dom_node($this);
|
||
++$this->cursor;
|
||
$node->_[HDOM_INFO_TEXT] = $s;
|
||
$this->link_nodes($node, false);
|
||
}
|
||
}
|
||
|
||
// 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 (function_exists('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 (function_exists('mb_detect_encoding'))
|
||
{
|
||
// Have php try to detect the encoding from the text given to us.
|
||
$charset = mb_detect_encoding($this->doc . "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 = $charset;
|
||
}
|
||
|
||
/**
|
||
* Parse tag from current document position.
|
||
*
|
||
* @return bool True if a tag was found, false otherwise
|
||
*/
|
||
protected function read_tag()
|
||
{
|
||
// Set end position if no further tags found
|
||
if ($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
|
||
|
||
// Skip whitespace in end tags (i.e. in "</ html>")
|
||
$this->skip($this->token_blank);
|
||
$tag = $this->copy_until_char('>');
|
||
|
||
// Skip attributes in end tags
|
||
if (($pos = strpos($tag, ' '))!==false)
|
||
$tag = substr($tag, 0, $pos);
|
||
|
||
$parent_lower = strtolower($this->parent->tag);
|
||
$tag_lower = strtolower($tag);
|
||
|
||
// The end tag is supposed to close the parent tag. Handle situations
|
||
// when it doesn't
|
||
if ($parent_lower!==$tag_lower)
|
||
{
|
||
// Parent tag does not have to be closed necessarily (optional closing tag)
|
||
// Current tag is a block tag, so it may close an ancestor
|
||
if (isset($this->optional_closing_tags[$parent_lower]) && isset($this->block_tags[$tag_lower]))
|
||
{
|
||
$this->parent->_[HDOM_INFO_END] = 0;
|
||
$org_parent = $this->parent;
|
||
|
||
// Traverse ancestors to find a matching opening tag
|
||
// Stop at root node
|
||
while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower)
|
||
$this->parent = $this->parent->parent;
|
||
|
||
// If we don't have a match add current tag as text node
|
||
if (strtolower($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);
|
||
}
|
||
}
|
||
// Grandparent exists and current tag is a block tag, so our parent doesn't have an end tag
|
||
else if (($this->parent->parent) && isset($this->block_tags[$tag_lower]))
|
||
{
|
||
$this->parent->_[HDOM_INFO_END] = 0; // No end tag
|
||
$org_parent = $this->parent;
|
||
|
||
// Traverse ancestors to find a matching opening tag
|
||
// Stop at root node
|
||
while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower)
|
||
$this->parent = $this->parent->parent;
|
||
|
||
// If we don't have a match add current tag as text node
|
||
if (strtolower($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);
|
||
}
|
||
}
|
||
// Grandparent exists and current tag closes it
|
||
else if (($this->parent->parent) && strtolower($this->parent->parent->tag)===$tag_lower)
|
||
{
|
||
$this->parent->_[HDOM_INFO_END] = 0;
|
||
$this->parent = $this->parent->parent;
|
||
}
|
||
else // Random tag, add as text node
|
||
return $this->as_text_node($tag);
|
||
}
|
||
|
||
// Set end position of parent tag to current cursor position
|
||
$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;
|
||
}
|
||
|
||
// start tag
|
||
$node = new simple_html_dom_node($this);
|
||
$node->_[HDOM_INFO_BEGIN] = $this->cursor;
|
||
++$this->cursor;
|
||
$tag = $this->copy_until($this->token_slash); // Get tag name
|
||
$node->tag_start = $begin_tag_pos;
|
||
|
||
// doctype, cdata & comments...
|
||
// <!DOCTYPE html>
|
||
// <![CDATA[ ... ]]>
|
||
// <!-- Comment -->
|
||
if (isset($tag[0]) && $tag[0]==='!') {
|
||
$node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until_char('>');
|
||
|
||
if (isset($tag[2]) && $tag[1]==='-' && $tag[2]==='-') { // Comment ("<!--")
|
||
$node->nodetype = HDOM_TYPE_COMMENT;
|
||
$node->tag = 'comment';
|
||
} else { // Could be doctype or CDATA but we don't care
|
||
$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;
|
||
}
|
||
|
||
// The start tag cannot contain another start tag, if so add as text
|
||
// i.e. "<<html>"
|
||
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;
|
||
}
|
||
|
||
// Handle invalid tag names (i.e. "<html#doc>")
|
||
if (!preg_match("/^\w[\w:-]*$/", $tag)) {
|
||
$node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until('<>');
|
||
|
||
// Next char is the beginning of a new tag, don't touch it.
|
||
if ($this->char==='<') {
|
||
$this->link_nodes($node, false);
|
||
return true;
|
||
}
|
||
|
||
// Next char closes current tag, add and be done with it.
|
||
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, add new node
|
||
$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[$tag_lower]) )
|
||
{
|
||
// Traverse ancestors to close all optional closing tags
|
||
while (isset($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), '', ''); // [0] Space between tag and first attribute
|
||
|
||
// attributes
|
||
do
|
||
{
|
||
// Everything until the first equal sign should be the attribute name
|
||
$name = $this->copy_until($this->token_equal);
|
||
|
||
if ($name==='' && $this->char!==null && $space[0]==='')
|
||
{
|
||
break;
|
||
}
|
||
|
||
if ($guard===$this->pos) // Escape infinite loop
|
||
{
|
||
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
||
continue;
|
||
}
|
||
$guard = $this->pos;
|
||
|
||
// handle endless '<'
|
||
if ($this->pos>=$this->size-1 && $this->char!=='>') { // Out of bounds before the tag ended
|
||
$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]=='<') { // Attributes cannot start after opening tag
|
||
$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!=='') { // this is a attribute name
|
||
$space[1] = $this->copy_skip($this->token_blank); // [1] Whitespace after attribute name
|
||
$name = $this->restore_noise($name); // might be a noisy name
|
||
if ($this->lowercase) $name = strtolower($name);
|
||
if ($this->char==='=') { // attribute with value
|
||
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
||
$this->parse_attr($node, $name, $space); // get attribute value
|
||
}
|
||
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($this->token_blank), '', ''); // prepare for next attribute
|
||
}
|
||
else // no more attributes
|
||
break;
|
||
} while ($this->char!=='>' && $this->char!=='/'); // go until the tag ended
|
||
|
||
$this->link_nodes($node, true);
|
||
$node->_[HDOM_INFO_ENDSPACE] = $space[0];
|
||
|
||
// handle empty tags (i.e. "<div/>")
|
||
if ($this->copy_until_char('>')==='/')
|
||
{
|
||
$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 attribute from current document position
|
||
*
|
||
* @param object $node Node for the attributes
|
||
* @param string $name Name of the current attribute
|
||
* @param array $space Array for spacing information
|
||
* @return void
|
||
*/
|
||
protected function parse_attr($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 attention to the first one as opposed to the last one.
|
||
// https://stackoverflow.com/a/26341866
|
||
if (isset($node->attr[$name]))
|
||
{
|
||
return;
|
||
}
|
||
|
||
$space[2] = $this->copy_skip($this->token_blank); // [2] Whitespace between "=" and the value
|
||
switch ($this->char) {
|
||
case '"': // value is anything between double quotes
|
||
$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('"'));
|
||
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
||
break;
|
||
case '\'': // value is anything between single quotes
|
||
$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('\''));
|
||
$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
||
break;
|
||
default: // value is anything until the first space or end tag
|
||
$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 to parent node
|
||
*
|
||
* @param object $node Node to link to parent
|
||
* @param bool $is_child True if the node is a child of parent
|
||
* @return void
|
||
*/
|
||
// link node's parent
|
||
protected function link_nodes(&$node, $is_child)
|
||
{
|
||
$node->parent = $this->parent;
|
||
$this->parent->nodes[] = $node;
|
||
if ($is_child)
|
||
{
|
||
$this->parent->children[] = $node;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Add tag as text node to current node
|
||
*
|
||
* @param string $tag Tag name
|
||
* @return bool True on success
|
||
*/
|
||
protected function as_text_node($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;
|
||
}
|
||
|
||
/**
|
||
* Seek from the current document position to the first occurrence of a
|
||
* character not defined by the provided string. Update the current document
|
||
* position to the new position.
|
||
*
|
||
* @param string $chars A string containing every allowed character.
|
||
* @return void
|
||
*/
|
||
protected function skip($chars)
|
||
{
|
||
$this->pos += strspn($this->doc, $chars, $this->pos);
|
||
$this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
|
||
}
|
||
|
||
/**
|
||
* Copy substring from the current document position to the first occurrence
|
||
* of a character not defined by the provided string.
|
||
*
|
||
* @param string $chars A string containing every allowed character.
|
||
* @return string Substring from the current document position to the first
|
||
* occurrence of a character not defined by the provided string.
|
||
*/
|
||
protected function copy_skip($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);
|
||
}
|
||
|
||
/**
|
||
* Copy substring from the current document position to the first occurrence
|
||
* of any of the provided characters.
|
||
*
|
||
* @param string $chars A string containing every character to stop at.
|
||
* @return string Substring from the current document position to the first
|
||
* occurrence of any of the provided characters.
|
||
*/
|
||
protected function copy_until($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);
|
||
}
|
||
|
||
/**
|
||
* Copy substring from the current document position to the first occurrence
|
||
* of the provided string.
|
||
*
|
||
* @param string $char The string to stop at.
|
||
* @return string Substring from the current document position to the first
|
||
* occurrence of the provided string.
|
||
*/
|
||
protected function copy_until_char($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);
|
||
}
|
||
|
||
/**
|
||
* Remove noise from HTML content
|
||
*
|
||
* Noise is stored to {@see simple_html_dom::$noise}
|
||
*
|
||
* @param string $pattern The regex pattern used for finding noise
|
||
* @param bool $remove_tag True to remove the entire match. Default is false
|
||
* to only remove the captured data.
|
||
*/
|
||
protected function remove_noise($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; // 0 = entire match, 1 = submatch
|
||
$this->noise[$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 = $this->doc[0];
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Restore noise to HTML content
|
||
*
|
||
* Noise is restored from {@see simple_html_dom::$noise}
|
||
*
|
||
* @param string $text A subset of HTML containing noise
|
||
* @return string The same content with noise restored
|
||
*/
|
||
function restore_noise($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)
|
||
{ // todo: "___noise___1000" (or any number with four or more digits) in the DOM causes an infinite loop which could be utilized by malicious software
|
||
$key = '___noise___'.$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);}
|
||
}
|
||
|
||
?>
|