<?php
namespace WPSocialReviews\App\Services\Libs\SimpleDom;
class HtmlDom
{
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 $WPSR_DEFAULT_br_text = "";
public $WPSR_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),
);
private $WPSR_HDOM_TYPE_ELEMENT = 1;
private $WPSR_HDOM_TYPE_COMMENT = 2;
private $WPSR_HDOM_TYPE_TEXT = 3;
private $WPSR_HDOM_TYPE_ENDTAG = 4;
private $WPSR_HDOM_TYPE_ROOT = 5;
private $WPSR_HDOM_TYPE_UNKNOWN = 6;
private $WPSR_HDOM_QUOTE_DOUBLE = 0;
private $WPSR_HDOM_QUOTE_SINGLE = 1;
private $WPSR_HDOM_QUOTE_NO = 3;
private $WPSR_HDOM_INFO_BEGIN = 0;
private $WPSR_HDOM_INFO_END = 1;
private $WPSR_HDOM_INFO_QUOTE = 2;
private $WPSR_HDOM_INFO_SPACE = 3;
private $WPSR_HDOM_INFO_TEXT = 4;
private $WPSR_HDOM_INFO_INNER = 5;
private $WPSR_HDOM_INFO_OUTER = 6;
private $WPSR_HDOM_INFO_ENDSPACE =7;
private $WPSR_DEFAULT_TARGET_CHARSET = 'UTF-8';
private $WPSR_DEFAULT_BR_TEXT = "\r\n";
private $WPSR_DEFAULT_SPAN_TEXT = " ";
private $WPSR_MAX_FILE_SIZE = 6000000;
function __construct($str=null, $lowercase=true, $forceTagsClosed=true, $target_charset = false, $stripRN= true, $defaultBRText = false, $defaultSpanText= false)
{
if(!$target_charset) {
$target_charset = $this->WPSR_DEFAULT_TARGET_CHARSET;
}
if(!$defaultBRText) {
$defaultBRText = $this->WPSR_DEFAULT_BR_TEXT;
}
if(!$defaultSpanText) {
$defaultSpanText = $this->WPSR_DEFAULT_SPAN_TEXT;
}
if ($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 = false, $defaultSpanText = false)
{
if(!$defaultBRText) {
$defaultBRText = $this->WPSR_DEFAULT_BR_TEXT;
}
if(!$defaultSpanText) {
$defaultSpanText = $this->WPSR_DEFAULT_SPAN_TEXT;
}
global $debugObject;
// prepare
$this->prepare($str, $lowercase, $stripRN, $defaultBRText, $defaultSpanText);
// strip out comments
$this->remove_noise("'<!--(.*?)-->'is");
// strip out cdata
$this->remove_noise("'<!\[CDATA\[(.*?)\]\]>'is", true);
// 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
$this->root->_[$this->WPSR_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=false, $defaultSpanText=false)
{
if(!$defaultBRText) {
$defaultBRText = $this->WPSR_DEFAULT_BR_TEXT;
}
if(!$defaultSpanText) {
$defaultSpanText = $this->WPSR_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->WPSR_DEFAULT_br_text = $defaultBRText;
$this->WPSR_DEFAULT_span_text = $defaultSpanText;
$this->root = new HtmlDomNode($this);
$this->root->tag = 'root';
$this->root->_[$this->WPSR_HDOM_INFO_BEGIN] = -1;
$this->root->nodetype = $this->WPSR_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
$node = new HtmlDomNode($this);
++$this->cursor;
$node->_[$this->WPSR_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 $debugObject;
$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 = $matches[1];
if (is_object($debugObject)) {$debugObject->debugLog(2, 'header content-type found charset of: ' . $charset);}
}
}
if (empty($charset))
{
$el = $this->root->find('meta[http-equiv=Content-Type]',0);
if (!empty($el))
{
$fullvalue = $el->content;
if (is_object($debugObject)) {$debugObject->debugLog(2, 'meta content-type tag found' . $fullvalue);}
if (!empty($fullvalue))
{
$success = preg_match('/charset=(.+)/', $fullvalue, $matches);
if ($success)
{
$charset = $matches[1];
}
else
{
// If there is a meta tag, and they don't specify the character set, research says that it's typically ISO-8859-1
if (is_object($debugObject)) {$debugObject->debugLog(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))
{
// Have php try to detect the encoding from the text given to us.
$charset = mb_detect_encoding($this->root->plaintext . "ascii", $encoding_list = array( "UTF-8", "CP1252" ) );
if (is_object($debugObject)) {$debugObject->debugLog(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($debugObject)) {$debugObject->debugLog(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($debugObject)) {$debugObject->debugLog(2, 'replacing ' . $charset . ' with CP1252 as its a superset');}
$charset = 'CP1252';
}
if (is_object($debugObject)) {$debugObject->debugLog(1, 'EXIT - ' . $charset);}
return $this->_charset = $charset;
}
// read tag info
protected function read_tag()
{
if ($this->char!=='<')
{
$this->root->_[$this->WPSR_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]))
{
$this->parent->_[$this->WPSR_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;
$this->parent->_[$this->WPSR_HDOM_INFO_END] = $this->cursor;
return $this->as_text_node($tag);
}
}
else if (($this->parent->parent) && isset($this->block_tags[$tag_lower]))
{
$this->parent->_[$this->WPSR_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
$this->parent->_[$this->WPSR_HDOM_INFO_END] = $this->cursor;
return $this->as_text_node($tag);
}
}
else if (($this->parent->parent) && strtolower($this->parent->parent->tag)===$tag_lower)
{
$this->parent->_[$this->WPSR_HDOM_INFO_END] = 0;
$this->parent = $this->parent->parent;
}
else
return $this->as_text_node($tag);
}
$this->parent->_[$this->WPSR_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;
}
$node = new HtmlDomNode($this);
$node->_[$this->WPSR_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]==='!') {
$node->_[$this->WPSR_HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until_char('>');
if (isset($tag[2]) && $tag[1]==='-' && $tag[2]==='-') {
$node->nodetype = $this->WPSR_HDOM_TYPE_COMMENT;
$node->tag = 'comment';
} else {
$node->nodetype = $this->WPSR_HDOM_TYPE_UNKNOWN;
$node->tag = 'unknown';
}
if ($this->char==='>') $node->_[$this->WPSR_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);
$node->_[$this->WPSR_HDOM_INFO_TEXT] = $tag;
$this->link_nodes($node, false);
$this->char = $this->doc[--$this->pos]; // prev
return true;
}
//if (!preg_match("/^[\w-:]+$/", $tag)) {
//fix for php 7.3
if (!preg_match("/^[\w\-:]+$/", $tag)) {
$node->_[$this->WPSR_HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until('<>');
if ($this->char==='<') {
$this->link_nodes($node, false);
return true;
}
if ($this->char==='>') $node->_[$this->WPSR_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 = $this->WPSR_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)]))
{
$this->parent->_[$this->WPSR_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 = $this->WPSR_HDOM_TYPE_TEXT;
$node->_[$this->WPSR_HDOM_INFO_END] = 0;
$node->_[$this->WPSR_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 = $this->WPSR_HDOM_TYPE_TEXT;
$node->tag = 'text';
$node->attr = array();
$node->_[$this->WPSR_HDOM_INFO_END] = 0;
$node->_[$this->WPSR_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...
$node->_[$this->WPSR_HDOM_INFO_QUOTE][] = $this->WPSR_HDOM_QUOTE_NO;
$node->attr[$name] = true;
if ($this->char!='>') $this->char = $this->doc[--$this->pos]; // prev
}
$node->_[$this->WPSR_HDOM_INFO_SPACE][] = $space;
$space = array($this->copy_skip($this->token_blank), '', '');
}
else
break;
} while ($this->char!=='>' && $this->char!=='/');
$this->link_nodes($node, true);
$node->_[$this->WPSR_HDOM_INFO_ENDSPACE] = $space[0];
// check self closing
if ($this->copy_until_char_escape('>')==='/')
{
$node->_[$this->WPSR_HDOM_INFO_ENDSPACE] .= '/';
$node->_[$this->WPSR_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")
{
$node->_[$this->WPSR_HDOM_INFO_INNER] = $this->WPSR_DEFAULT_br_text;
}
return true;
}
// parse attributes
protected function parse_attr($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 '"':
$node->_[$this->WPSR_HDOM_INFO_QUOTE][] = $this->WPSR_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 '\'':
$node->_[$this->WPSR_HDOM_INFO_QUOTE][] = $this->WPSR_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:
$node->_[$this->WPSR_HDOM_INFO_QUOTE][] = $this->WPSR_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)
{
$node = new HtmlDomNode($this);
++$this->cursor;
$node->_[$this->WPSR_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 $debugObject;
if (is_object($debugObject)) { $debugObject->debugLogEntry(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($debugObject)) { $debugObject->debugLog(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 $debugObject;
if (is_object($debugObject)) { $debugObject->debugLogEntry(1); }
while (($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[$pos+15];
if (is_object($debugObject)) { $debugObject->debugLog(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 $debugObject;
if (is_object($debugObject)) { $debugObject->debugLogEntry(1); }
foreach($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);}
}