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  1. <?php
  2. /**
  3.  * Website: http://sourceforge.net/projects/simplehtmldom/
  4.  * Additional projects that may be used: http://sourceforge.net/projects/debugobject/
  5.  * Acknowledge: Jose Solorzano (https://sourceforge.net/projects/php-html/)
  6.  * Contributions by:
  7.  *   Yousuke Kumakura (Attribute filters)
  8.  *   Vadim Voituk (Negative indexes supports of "find" method)
  9.  *   Antcs (Constructor with automatically load contents either text or file/url)
  10.  *
  11.  * all affected sections have comments starting with "PaperG"
  12.  *
  13.  * Paperg - Added case insensitive testing of the value of the selector.
  14.  * Paperg - Added tag_start for the starting index of tags - NOTE: This works but not accurately.
  15.  *  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,
  16.  *  it will almost always be smaller by some amount.
  17.  *  We use this to determine how far into the file the tag in question is.  This "percentage will never be accurate as the $dom->size is the "real" number of bytes the dom was created from.
  18.  *  but for most purposes, it's a really good estimation.
  19.  * Paperg - Added the forceTagsClosed to the dom constructor.  Forcing tags closed is great for malformed html, but it CAN lead to parsing errors.
  20.  * Allow the user to tell us how much they trust the html.
  21.  * Paperg add the text and plaintext to the selectors for the find syntax.  plaintext implies text in the innertext of a node.  text implies that the tag is a text node.
  22.  * This allows for us to find tags based on the text they contain.
  23.  * Create find_ancestor_tag to see if a tag is - at any level - inside of another specific tag.
  24.  * Paperg: added parse_charset so that we know about the character set of the source document.
  25.  *  NOTE:  If the user's system has a routine called get_last_retrieve_url_contents_content_type availalbe, we will assume it's returning the content-type header from the
  26.  *  last transfer or curl_exec, and we will parse that and use it in preference to any other method of charset detection.
  27.  *
  28.  * Found infinite loop in the case of broken html in restore_noise.  Rewrote to protect from that.
  29.  * PaperG (John Schlick) Added get_display_size for "IMG" tags.
  30.  *
  31.  * Licensed under The MIT License
  32.  * Redistributions of files must retain the above copyright notice.
  33.  *
  34.  * @author S.C. Chen <me578022@gmail.com>
  35.  * @author John Schlick
  36.  * @author Rus Carroll
  37.  * @version 1.5 ($Rev: 210 $)
  38.  * @package PlaceLocalInclude
  39.  * @subpackage simple_html_dom
  40.  */
  41.  
  42. /**
  43.  * All of the Defines for the classes below.
  44.  * @author S.C. Chen <me578022@gmail.com>
  45.  */
  46. define('HDOM_TYPE_ELEMENT', 1);
  47. define('HDOM_TYPE_COMMENT', 2);
  48. define('HDOM_TYPE_TEXT',    3);
  49. define('HDOM_TYPE_ENDTAG',  4);
  50. define('HDOM_TYPE_ROOT',    5);
  51. define('HDOM_TYPE_UNKNOWN', 6);
  52. define('HDOM_QUOTE_DOUBLE', 0);
  53. define('HDOM_QUOTE_SINGLE', 1);
  54. define('HDOM_QUOTE_NO',  3);
  55. define('HDOM_INFO_BEGIN',   0);
  56. define('HDOM_INFO_END',  1);
  57. define('HDOM_INFO_QUOTE',   2);
  58. define('HDOM_INFO_SPACE',   3);
  59. define('HDOM_INFO_TEXT',    4);
  60. define('HDOM_INFO_INNER',   5);
  61. define('HDOM_INFO_OUTER',   6);
  62. define('HDOM_INFO_ENDSPACE',7);
  63. define('DEFAULT_TARGET_CHARSET', 'UTF-8');
  64. define('DEFAULT_BR_TEXT', "\r\n");
  65. define('DEFAULT_SPAN_TEXT', " ");
  66. define('MAX_FILE_SIZE', 600000);
  67. // helper functions
  68. // -----------------------------------------------------------------------------
  69. // get html dom from file
  70. // $maxlen is defined in the code as PHP_STREAM_COPY_ALL which is defined as -1.
  71. function file_get_html($url, $use_include_path = false, $context=null, $offset = -1, $maxLen=-1, $lowercase = true, $forceTagsClosed=true, $target_charset = DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
  72. {
  73.     // We DO force the tags to be terminated.
  74.     $dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, $target_charset, $stripRN, $defaultBRText, $defaultSpanText);
  75.     // For sourceforge users: uncomment the next line and comment the retreive_url_contents line 2 lines down if it is not already done.
  76.     $contents = file_get_contents($url, $use_include_path, $context, $offset);
  77.     // Paperg - use our own mechanism for getting the contents as we want to control the timeout.
  78.     //$contents = retrieve_url_contents($url);
  79.     if (empty($contents) || strlen($contents) > MAX_FILE_SIZE)
  80.     {
  81.         return false;
  82.     }
  83.     // The second parameter can force the selectors to all be lowercase.
  84.     $dom->load($contents, $lowercase, $stripRN);
  85.     return $dom;
  86. }
  87.  
  88. // get html dom from string
  89. function str_get_html($str, $lowercase=true, $forceTagsClosed=true, $target_charset = DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
  90. {
  91.     $dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, $target_charset, $stripRN, $defaultBRText, $defaultSpanText);
  92.     if (empty($str) || strlen($str) > MAX_FILE_SIZE)
  93.     {
  94.         $dom->clear();
  95.         return false;
  96.     }
  97.     $dom->load($str, $lowercase, $stripRN);
  98.     return $dom;
  99. }
  100.  
  101. // dump html dom tree
  102. function dump_html_tree($node, $show_attr=true, $deep=0)
  103. {
  104.     $node->dump($node);
  105. }
  106.  
  107.  
  108. /**
  109.  * simple html dom node
  110.  * PaperG - added ability for "find" routine to lowercase the value of the selector.
  111.  * PaperG - added $tag_start to track the start position of the tag in the total byte index
  112.  *
  113.  * @package PlaceLocalInclude
  114.  */
  115. class simple_html_dom_node
  116. {
  117.     public $nodetype = HDOM_TYPE_TEXT;
  118.     public $tag = 'text';
  119.     public $attr = array();
  120.     public $children = array();
  121.     public $nodes = array();
  122.     public $parent = null;
  123.     // The "info" array - see HDOM_INFO_... for what each element contains.
  124.     public $_ = array();
  125.     public $tag_start = 0;
  126.     private $dom = null;
  127.  
  128.     function __construct($dom)
  129.     {
  130.         $this->dom = $dom;
  131.         $dom->nodes[] = $this;
  132.     }
  133.  
  134.     function __destruct()
  135.     {
  136.         $this->clear();
  137.     }
  138.  
  139.     function __toString()
  140.     {
  141.         return $this->outertext();
  142.     }
  143.  
  144.     // clean up memory due to php5 circular references memory leak...
  145.     function clear()
  146.     {
  147.         $this->dom = null;
  148.         $this->nodes = null;
  149.         $this->parent = null;
  150.         $this->children = null;
  151.     }
  152.  
  153.     // dump node's tree
  154.     function dump($show_attr=true, $deep=0)
  155.     {
  156.         $lead = str_repeat('    ', $deep);
  157.  
  158.         echo $lead.$this->tag;
  159.         if ($show_attr && count($this->attr)>0)
  160.         {
  161.             echo '(';
  162.             foreach ($this->attr as $k=>$v)
  163.                 echo "[$k]=>\"".$this->$k.'", ';
  164.             echo ')';
  165.         }
  166.         echo "\n";
  167.  
  168.         if ($this->nodes)
  169.         {
  170.             foreach ($this->nodes as $c)
  171.             {
  172.                 $c->dump($show_attr, $deep+1);
  173.             }
  174.         }
  175.     }
  176.  
  177.  
  178.     // Debugging function to dump a single dom node with a bunch of information about it.
  179.     function dump_node($echo=true)
  180.     {
  181.  
  182.         $string = $this->tag;
  183.         if (count($this->attr)>0)
  184.         {
  185.             $string .= '(';
  186.             foreach ($this->attr as $k=>$v)
  187.             {
  188.                 $string .= "[$k]=>\"".$this->$k.'", ';
  189.             }
  190.             $string .= ')';
  191.         }
  192.         if (count($this->_)>0)
  193.         {
  194.             $string .= ' $_ (';
  195.             foreach ($this->_ as $k=>$v)
  196.             {
  197.                 if (is_array($v))
  198.                 {
  199.                     $string .= "[$k]=>(";
  200.                     foreach ($v as $k2=>$v2)
  201.                     {
  202.                         $string .= "[$k2]=>\"".$v2.'", ';
  203.                     }
  204.                     $string .= ")";
  205.                 } else {
  206.                     $string .= "[$k]=>\"".$v.'", ';
  207.                 }
  208.             }
  209.             $string .= ")";
  210.         }
  211.  
  212.         if (isset($this->text))
  213.         {
  214.             $string .= " text: (" . $this->text . ")";
  215.         }
  216.  
  217.         $string .= " HDOM_INNER_INFO: '";
  218.         if (isset($node->_[HDOM_INFO_INNER]))
  219.         {
  220.             $string .= $node->_[HDOM_INFO_INNER] . "'";
  221.         }
  222.         else
  223.         {
  224.             $string .= ' NULL ';
  225.         }
  226.  
  227.         $string .= " children: " . count($this->children);
  228.         $string .= " nodes: " . count($this->nodes);
  229.         $string .= " tag_start: " . $this->tag_start;
  230.         $string .= "\n";
  231.  
  232.         if ($echo)
  233.         {
  234.             echo $string;
  235.             return;
  236.         }
  237.         else
  238.         {
  239.             return $string;
  240.         }
  241.     }
  242.  
  243.     // returns the parent of node
  244.     // If a node is passed in, it will reset the parent of the current node to that one.
  245.     function parent($parent=null)
  246.     {
  247.         // I am SURE that this doesn't work properly.
  248.         // It fails to unset the current node from it's current parents nodes or children list first.
  249.         if ($parent !== null)
  250.         {
  251.             $this->parent = $parent;
  252.             $this->parent->nodes[] = $this;
  253.             $this->parent->children[] = $this;
  254.         }
  255.  
  256.         return $this->parent;
  257.     }
  258.  
  259.     // verify that node has children
  260.     function has_child()
  261.     {
  262.         return !empty($this->children);
  263.     }
  264.  
  265.     // returns children of node
  266.     function children($idx=-1)
  267.     {
  268.         if ($idx===-1)
  269.         {
  270.             return $this->children;
  271.         }
  272.         if (isset($this->children[$idx]))
  273.         {
  274.             return $this->children[$idx];
  275.         }
  276.         return null;
  277.     }
  278.  
  279.     // returns the first child of node
  280.     function first_child()
  281.     {
  282.         if (count($this->children)>0)
  283.         {
  284.             return $this->children[0];
  285.         }
  286.         return null;
  287.     }
  288.  
  289.     // returns the last child of node
  290.     function last_child()
  291.     {
  292.         if (($count=count($this->children))>0)
  293.         {
  294.             return $this->children[$count-1];
  295.         }
  296.         return null;
  297.     }
  298.  
  299.     // returns the next sibling of node
  300.     function next_sibling()
  301.     {
  302.         if ($this->parent===null)
  303.         {
  304.             return null;
  305.         }
  306.  
  307.         $idx = 0;
  308.         $count = count($this->parent->children);
  309.         while ($idx<$count && $this!==$this->parent->children[$idx])
  310.         {
  311.             ++$idx;
  312.         }
  313.         if (++$idx>=$count)
  314.         {
  315.             return null;
  316.         }
  317.         return $this->parent->children[$idx];
  318.     }
  319.  
  320.     // returns the previous sibling of node
  321.     function prev_sibling()
  322.     {
  323.         if ($this->parent===null) return null;
  324.         $idx = 0;
  325.         $count = count($this->parent->children);
  326.         while ($idx<$count && $this!==$this->parent->children[$idx])
  327.             ++$idx;
  328.         if (--$idx<0) return null;
  329.         return $this->parent->children[$idx];
  330.     }
  331.  
  332.     // function to locate a specific ancestor tag in the path to the root.
  333.     function find_ancestor_tag($tag)
  334.     {
  335.         global $debug_object;
  336.         if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
  337.  
  338.         // Start by including ourselves in the comparison.
  339.         $returnDom = $this;
  340.  
  341.         while (!is_null($returnDom))
  342.         {
  343.             if (is_object($debug_object)) { $debug_object->debug_log(2, "Current tag is: " . $returnDom->tag); }
  344.  
  345.             if ($returnDom->tag == $tag)
  346.             {
  347.                 break;
  348.             }
  349.             $returnDom = $returnDom->parent;
  350.         }
  351.         return $returnDom;
  352.     }
  353.  
  354.     // get dom node's inner html
  355.     function innertext()
  356.     {
  357.         if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER];
  358.         if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
  359.  
  360.         $ret = '';
  361.         foreach ($this->nodes as $n)
  362.             $ret .= $n->outertext();
  363.         return $ret;
  364.     }
  365.  
  366.     // get dom node's outer text (with tag)
  367.     function outertext()
  368.     {
  369.         global $debug_object;
  370.         if (is_object($debug_object))
  371.         {
  372.             $text = '';
  373.             if ($this->tag == 'text')
  374.             {
  375.                 if (!empty($this->text))
  376.                 {
  377.                     $text = " with text: " . $this->text;
  378.                 }
  379.             }
  380.             $debug_object->debug_log(1, 'Innertext of tag: ' . $this->tag . $text);
  381.         }
  382.  
  383.         if ($this->tag==='root') return $this->innertext();
  384.  
  385.         // trigger callback
  386.         if ($this->dom && $this->dom->callback!==null)
  387.         {
  388.             call_user_func_array($this->dom->callback, array($this));
  389.         }
  390.  
  391.         if (isset($this->_[HDOM_INFO_OUTER])) return $this->_[HDOM_INFO_OUTER];
  392.         if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
  393.  
  394.         // render begin tag
  395.         if ($this->dom && $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]])
  396.         {
  397.             $ret = $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]->makeup();
  398.         } else {
  399.             $ret = "";
  400.         }
  401.  
  402.         // render inner text
  403.         if (isset($this->_[HDOM_INFO_INNER]))
  404.         {
  405.             // If it's a br tag...  don't return the HDOM_INNER_INFO that we may or may not have added.
  406.             if ($this->tag != "br")
  407.             {
  408.                 $ret .= $this->_[HDOM_INFO_INNER];
  409.             }
  410.         } else {
  411.             if ($this->nodes)
  412.             {
  413.                 foreach ($this->nodes as $n)
  414.                 {
  415.                     $ret .= $this->convert_text($n->outertext());
  416.                 }
  417.             }
  418.         }
  419.  
  420.         // render end tag
  421.         if (isset($this->_[HDOM_INFO_END]) && $this->_[HDOM_INFO_END]!=0)
  422.             $ret .= '</'.$this->tag.'>';
  423.         return $ret;
  424.     }
  425.  
  426.     // get dom node's plain text
  427.     function text()
  428.     {
  429.         if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER];
  430.         switch ($this->nodetype)
  431.         {
  432.             case HDOM_TYPE_TEXT: return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
  433.             case HDOM_TYPE_COMMENT: return '';
  434.             case HDOM_TYPE_UNKNOWN: return '';
  435.         }
  436.         if (strcasecmp($this->tag, 'script')===0) return '';
  437.         if (strcasecmp($this->tag, 'style')===0) return '';
  438.  
  439.         $ret = '';
  440.         // In rare cases, (always node type 1 or HDOM_TYPE_ELEMENT - observed for some span tags, and some p tags) $this->nodes is set to NULL.
  441.         // NOTE: This indicates that there is a problem where it's set to NULL without a clear happening.
  442.         // WHY is this happening?
  443.         if (!is_null($this->nodes))
  444.         {
  445.             foreach ($this->nodes as $n)
  446.             {
  447.                 $ret .= $this->convert_text($n->text());
  448.             }
  449.  
  450.             // 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.
  451.             if ($this->tag == "span")
  452.             {
  453.                 $ret .= $this->dom->default_span_text;
  454.             }
  455.  
  456.  
  457.         }
  458.         return $ret;
  459.     }
  460.  
  461.     function xmltext()
  462.     {
  463.         $ret = $this->innertext();
  464.         $ret = str_ireplace('<![CDATA[', '', $ret);
  465.         $ret = str_replace(']]>', '', $ret);
  466.         return $ret;
  467.     }
  468.  
  469.     // build node's text with tag
  470.     function makeup()
  471.     {
  472.         // text, comment, unknown
  473.         if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
  474.  
  475.         $ret = '<'.$this->tag;
  476.         $i = -1;
  477.  
  478.         foreach ($this->attr as $key=>$val)
  479.         {
  480.             ++$i;
  481.  
  482.             // skip removed attribute
  483.             if ($val===null || $val===false)
  484.                 continue;
  485.  
  486.             $ret .= $this->_[HDOM_INFO_SPACE][$i][0];
  487.             //no value attr: nowrap, checked selected...
  488.             if ($val===true)
  489.                 $ret .= $key;
  490.             else {
  491.                 switch ($this->_[HDOM_INFO_QUOTE][$i])
  492.                 {
  493.                     case HDOM_QUOTE_DOUBLE: $quote = '"'; break;
  494.                     case HDOM_QUOTE_SINGLE: $quote = '\''; break;
  495.                     default: $quote = '';
  496.                 }
  497.                 $ret .= $key.$this->_[HDOM_INFO_SPACE][$i][1].'='.$this->_[HDOM_INFO_SPACE][$i][2].$quote.$val.$quote;
  498.             }
  499.         }
  500.         $ret = $this->dom->restore_noise($ret);
  501.         return $ret . $this->_[HDOM_INFO_ENDSPACE] . '>';
  502.     }
  503.  
  504.     // find elements by css selector
  505.     //PaperG - added ability for find to lowercase the value of the selector.
  506.     function find($selector, $idx=null, $lowercase=false)
  507.     {
  508.         $selectors = $this->parse_selector($selector);
  509.         if (($count=count($selectors))===0) return array();
  510.         $found_keys = array();
  511.  
  512.         // find each selector
  513.         for ($c=0; $c<$count; ++$c)
  514.         {
  515.             // The change on the below line was documented on the sourceforge code tracker id 2788009
  516.             // used to be: if (($levle=count($selectors[0]))===0) return array();
  517.             if (($levle=count($selectors[$c]))===0) return array();
  518.             if (!isset($this->_[HDOM_INFO_BEGIN])) return array();
  519.  
  520.             $head = array($this->_[HDOM_INFO_BEGIN]=>1);
  521.  
  522.             // handle descendant selectors, no recursive!
  523.             for ($l=0; $l<$levle; ++$l)
  524.             {
  525.                 $ret = array();
  526.                 foreach ($head as $k=>$v)
  527.                 {
  528.                     $n = ($k===-1) ? $this->dom->root : $this->dom->nodes[$k];
  529.                     //PaperG - Pass this optional parameter on to the seek function.
  530.                     $n->seek($selectors[$c][$l], $ret, $lowercase);
  531.                 }
  532.                 $head = $ret;
  533.             }
  534.  
  535.             foreach ($head as $k=>$v)
  536.             {
  537.                 if (!isset($found_keys[$k]))
  538.                 {
  539.                     $found_keys[$k] = 1;
  540.                 }
  541.             }
  542.         }
  543.  
  544.         // sort keys
  545.         ksort($found_keys);
  546.  
  547.         $found = array();
  548.         foreach ($found_keys as $k=>$v)
  549.             $found[] = $this->dom->nodes[$k];
  550.  
  551.         // return nth-element or array
  552.         if (is_null($idx)) return $found;
  553.         else if ($idx<0) $idx = count($found) + $idx;
  554.         return (isset($found[$idx])) ? $found[$idx] : null;
  555.     }
  556.  
  557.     // seek for given conditions
  558.     // PaperG - added parameter to allow for case insensitive testing of the value of a selector.
  559.     protected function seek($selector, &$ret, $lowercase=false)
  560.     {
  561.         global $debug_object;
  562.         if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
  563.  
  564.         list($tag, $key, $val, $exp, $no_key) = $selector;
  565.  
  566.         // xpath index
  567.         if ($tag && $key && is_numeric($key))
  568.         {
  569.             $count = 0;
  570.             foreach ($this->children as $c)
  571.             {
  572.                 if ($tag==='*' || $tag===$c->tag) {
  573.                     if (++$count==$key) {
  574.                         $ret[$c->_[HDOM_INFO_BEGIN]] = 1;
  575.                         return;
  576.                     }
  577.                 }
  578.             }
  579.             return;
  580.         }
  581.  
  582.         $end = (!empty($this->_[HDOM_INFO_END])) ? $this->_[HDOM_INFO_END] : 0;
  583.         if ($end==0) {
  584.             $parent = $this->parent;
  585.             while (!isset($parent->_[HDOM_INFO_END]) && $parent!==null) {
  586.                 $end -= 1;
  587.                 $parent = $parent->parent;
  588.             }
  589.             $end += $parent->_[HDOM_INFO_END];
  590.         }
  591.  
  592.         for ($i=$this->_[HDOM_INFO_BEGIN]+1; $i<$end; ++$i) {
  593.             $node = $this->dom->nodes[$i];
  594.  
  595.             $pass = true;
  596.  
  597.             if ($tag==='*' && !$key) {
  598.                 if (in_array($node, $this->children, true))
  599.                     $ret[$i] = 1;
  600.                 continue;
  601.             }
  602.  
  603.             // compare tag
  604.             if ($tag && $tag!=$node->tag && $tag!=='*') {$pass=false;}
  605.             // compare key
  606.             if ($pass && $key) {
  607.                 if ($no_key) {
  608.                     if (isset($node->attr[$key])) $pass=false;
  609.                 } else {
  610.                     if (($key != "plaintext") && !isset($node->attr[$key])) $pass=false;
  611.                 }
  612.             }
  613.             // compare value
  614.             if ($pass && $key && $val  && $val!=='*') {
  615.                 // If they have told us that this is a "plaintext" search then we want the plaintext of the node - right?
  616.                 if ($key == "plaintext") {
  617.                     // $node->plaintext actually returns $node->text();
  618.                     $nodeKeyValue = $node->text();
  619.                 } else {
  620.                     // this is a normal search, we want the value of that attribute of the tag.
  621.                     $nodeKeyValue = $node->attr[$key];
  622.                 }
  623.                 if (is_object($debug_object)) {$debug_object->debug_log(2, "testing node: " . $node->tag . " for attribute: " . $key . $exp . $val . " where nodes value is: " . $nodeKeyValue);}
  624.  
  625.                 //PaperG - If lowercase is set, do a case insensitive test of the value of the selector.
  626.                 if ($lowercase) {
  627.                     $check = $this->match($exp, strtolower($val), strtolower($nodeKeyValue));
  628.                 } else {
  629.                     $check = $this->match($exp, $val, $nodeKeyValue);
  630.                 }
  631.                 if (is_object($debug_object)) {$debug_object->debug_log(2, "after match: " . ($check ? "true" : "false"));}
  632.  
  633.                 // handle multiple class
  634.                 if (!$check && strcasecmp($key, 'class')===0) {
  635.                     foreach (explode(' ',$node->attr[$key]) as $k) {
  636.                         // Without this, there were cases where leading, trailing, or double spaces lead to our comparing blanks - bad form.
  637.                         if (!empty($k)) {
  638.                             if ($lowercase) {
  639.                                 $check = $this->match($exp, strtolower($val), strtolower($k));
  640.                             } else {
  641.                                 $check = $this->match($exp, $val, $k);
  642.                             }
  643.                             if ($check) break;
  644.                         }
  645.                     }
  646.                 }
  647.                 if (!$check) $pass = false;
  648.             }
  649.             if ($pass) $ret[$i] = 1;
  650.             unset($node);
  651.         }
  652.         // It's passed by reference so this is actually what this function returns.
  653.         if (is_object($debug_object)) {$debug_object->debug_log(1, "EXIT - ret: ", $ret);}
  654.     }
  655.  
  656.     protected function match($exp, $pattern, $value) {
  657.         global $debug_object;
  658.         if (is_object($debug_object)) {$debug_object->debug_log_entry(1);}
  659.  
  660.         switch ($exp) {
  661.             case '=':
  662.                 return ($value===$pattern);
  663.             case '!=':
  664.                 return ($value!==$pattern);
  665.             case '^=':
  666.                 return preg_match("/^".preg_quote($pattern,'/')."/", $value);
  667.             case '$=':
  668.                 return preg_match("/".preg_quote($pattern,'/')."$/", $value);
  669.             case '*=':
  670.                 if ($pattern[0]=='/') {
  671.                     return preg_match($pattern, $value);
  672.                 }
  673.                 return preg_match("/".$pattern."/i", $value);
  674.         }
  675.         return false;
  676.     }
  677.  
  678.     protected function parse_selector($selector_string) {
  679.         global $debug_object;
  680.         if (is_object($debug_object)) {$debug_object->debug_log_entry(1);}
  681.  
  682.         // pattern of CSS selectors, modified from mootools
  683.         // Paperg: Add the colon to the attrbute, so that it properly finds <tag attr:ibute="something" > like google does.
  684.         // Note: if you try to look at this attribute, yo MUST use getAttribute since $dom->x:y will fail the php syntax check.
  685. // Notice the \[ starting the attbute?  and the @? following?  This implies that an attribute can begin with an @ sign that is not captured.
  686. // This implies that an html attribute specifier may start with an @ sign that is NOT captured by the expression.
  687. // farther study is required to determine of this should be documented or removed.
  688. //      $pattern = "/([\w-:\*]*)(?:\#([\w-]+)|\.([\w-]+))?(?:\[@?(!?[\w-]+)(?:([!*^$]?=)[\"']?(.*?)[\"']?)?\])?([\/, ]+)/is";
  689.         $pattern = "/([\w-:\*]*)(?:\#([\w-]+)|\.([\w-]+))?(?:\[@?(!?[\w-:]+)(?:([!*^$]?=)[\"']?(.*?)[\"']?)?\])?([\/, ]+)/is";
  690.         preg_match_all($pattern, trim($selector_string).' ', $matches, PREG_SET_ORDER);
  691.         if (is_object($debug_object)) {$debug_object->debug_log(2, "Matches Array: ", $matches);}
  692.  
  693.         $selectors = array();
  694.         $result = array();
  695.         //print_r($matches);
  696.  
  697.         foreach ($matches as $m) {
  698.             $m[0] = trim($m[0]);
  699.             if ($m[0]==='' || $m[0]==='/' || $m[0]==='//') continue;
  700.             // for browser generated xpath
  701.             if ($m[1]==='tbody') continue;
  702.  
  703.             list($tag, $key, $val, $exp, $no_key) = array($m[1], null, null, '=', false);
  704.             if (!empty($m[2])) {$key='id'; $val=$m[2];}
  705.             if (!empty($m[3])) {$key='class'; $val=$m[3];}
  706.             if (!empty($m[4])) {$key=$m[4];}
  707.             if (!empty($m[5])) {$exp=$m[5];}
  708.             if (!empty($m[6])) {$val=$m[6];}
  709.  
  710.             // convert to lowercase
  711.             if ($this->dom->lowercase) {$tag=strtolower($tag); $key=strtolower($key);}
  712.             //elements that do NOT have the specified attribute
  713.             if (isset($key[0]) && $key[0]==='!') {$key=substr($key, 1); $no_key=true;}
  714.  
  715.             $result[] = array($tag, $key, $val, $exp, $no_key);
  716.             if (trim($m[7])===',') {
  717.                 $selectors[] = $result;
  718.                 $result = array();
  719.             }
  720.         }
  721.         if (count($result)>0)
  722.             $selectors[] = $result;
  723.         return $selectors;
  724.     }
  725.  
  726.     function __get($name)
  727.     {
  728.         if (isset($this->attr[$name]))
  729.         {
  730.             return $this->convert_text($this->attr[$name]);
  731.         }
  732.         switch ($name)
  733.         {
  734.             case 'outertext': return $this->outertext();
  735.             case 'innertext': return $this->innertext();
  736.             case 'plaintext': return $this->text();
  737.             case 'xmltext': return $this->xmltext();
  738.             default: return array_key_exists($name, $this->attr);
  739.         }
  740.     }
  741.  
  742.     function __set($name, $value)
  743.     {
  744.         global $debug_object;
  745.         if (is_object($debug_object)) {$debug_object->debug_log_entry(1);}
  746.  
  747.         switch ($name)
  748.         {
  749.             case 'outertext': return $this->_[HDOM_INFO_OUTER] = $value;
  750.             case 'innertext':
  751.                 if (isset($this->_[HDOM_INFO_TEXT])) return $this->_[HDOM_INFO_TEXT] = $value;
  752.                 return $this->_[HDOM_INFO_INNER] = $value;
  753.         }
  754.         if (!isset($this->attr[$name]))
  755.         {
  756.             $this->_[HDOM_INFO_SPACE][] = array(' ', '', '');
  757.             $this->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE;
  758.         }
  759.         $this->attr[$name] = $value;
  760.     }
  761.  
  762.     function __isset($name)
  763.     {
  764.         switch ($name)
  765.         {
  766.             case 'outertext': return true;
  767.             case 'innertext': return true;
  768.             case 'plaintext': return true;
  769.         }
  770.         //no value attr: nowrap, checked selected...
  771.         return (array_key_exists($name, $this->attr)) ? true : isset($this->attr[$name]);
  772.     }
  773.  
  774.     function __unset($name) {
  775.         if (isset($this->attr[$name]))
  776.             unset($this->attr[$name]);
  777.     }
  778.  
  779.     // PaperG - Function to convert the text from one character set to another if the two sets are not the same.
  780.     function convert_text($text)
  781.     {
  782.         global $debug_object;
  783.         if (is_object($debug_object)) {$debug_object->debug_log_entry(1);}
  784.  
  785.         $converted_text = $text;
  786.  
  787.         $sourceCharset = "";
  788.         $targetCharset = "";
  789.  
  790.         if ($this->dom)
  791.         {
  792.             $sourceCharset = strtoupper($this->dom->_charset);
  793.             $targetCharset = strtoupper($this->dom->_target_charset);
  794.         }
  795.         if (is_object($debug_object)) {$debug_object->debug_log(3, "source charset: " . $sourceCharset . " target charaset: " . $targetCharset);}
  796.  
  797.         if (!empty($sourceCharset) && !empty($targetCharset) && (strcasecmp($sourceCharset, $targetCharset) != 0))
  798.         {
  799.             // Check if the reported encoding could have been incorrect and the text is actually already UTF-8
  800.             if ((strcasecmp($targetCharset, 'UTF-8') == 0) && ($this->is_utf8($text)))
  801.             {
  802.                 $converted_text = $text;
  803.             }
  804.             else
  805.             {
  806.                 $converted_text = iconv($sourceCharset, $targetCharset, $text);
  807.             }
  808.         }
  809.  
  810.         // Lets make sure that we don't have that silly BOM issue with any of the utf-8 text we output.
  811.         if ($targetCharset == 'UTF-8')
  812.         {
  813.             if (substr($converted_text, 0, 3) == "\xef\xbb\xbf")
  814.             {
  815.                 $converted_text = substr($converted_text, 3);
  816.             }
  817.             if (substr($converted_text, -3) == "\xef\xbb\xbf")
  818.             {
  819.                 $converted_text = substr($converted_text, 0, -3);
  820.             }
  821.         }
  822.  
  823.         return $converted_text;
  824.     }
  825.  
  826.     /**
  827.     * Returns true if $string is valid UTF-8 and false otherwise.
  828.     *
  829.     * @param mixed $str String to be tested
  830.     * @return boolean
  831.     */
  832.     static function is_utf8($str)
  833.     {
  834.         $c=0; $b=0;
  835.         $bits=0;
  836.         $len=strlen($str);
  837.         for($i=0; $i<$len; $i++)
  838.         {
  839.             $c=ord($str[$i]);
  840.             if($c > 128)
  841.             {
  842.                 if(($c >= 254)) return false;
  843.                 elseif($c >= 252) $bits=6;
  844.                 elseif($c >= 248) $bits=5;
  845.                 elseif($c >= 240) $bits=4;
  846.                 elseif($c >= 224) $bits=3;
  847.                 elseif($c >= 192) $bits=2;
  848.                 else return false;
  849.                 if(($i+$bits) > $len) return false;
  850.                 while($bits > 1)
  851.                 {
  852.                     $i++;
  853.                     $b=ord($str[$i]);
  854.                     if($b < 128 || $b > 191) return false;
  855.                     $bits--;
  856.                 }
  857.             }
  858.         }
  859.         return true;
  860.     }
  861.     /*
  862.     function is_utf8($string)
  863.     {
  864.         //this is buggy
  865.         return (utf8_encode(utf8_decode($string)) == $string);
  866.     }
  867.     */
  868.  
  869.     /**
  870.      * Function to try a few tricks to determine the displayed size of an img on the page.
  871.      * NOTE: This will ONLY work on an IMG tag. Returns FALSE on all other tag types.
  872.      *
  873.      * @author John Schlick
  874.      * @version April 19 2012
  875.      * @return array an array containing the 'height' and 'width' of the image on the page or -1 if we can't figure it out.
  876.      */
  877.     function get_display_size()
  878.     {
  879.         global $debug_object;
  880.  
  881.         $width = -1;
  882.         $height = -1;
  883.  
  884.         if ($this->tag !== 'img')
  885.         {
  886.             return false;
  887.         }
  888.  
  889.         // See if there is aheight or width attribute in the tag itself.
  890.         if (isset($this->attr['width']))
  891.         {
  892.             $width = $this->attr['width'];
  893.         }
  894.  
  895.         if (isset($this->attr['height']))
  896.         {
  897.             $height = $this->attr['height'];
  898.         }
  899.  
  900.         // Now look for an inline style.
  901.         if (isset($this->attr['style']))
  902.         {
  903.             // Thanks to user gnarf from stackoverflow for this regular expression.
  904.             $attributes = array();
  905.             preg_match_all("/([\w-]+)\s*:\s*([^;]+)\s*;?/", $this->attr['style'], $matches, PREG_SET_ORDER);
  906.             foreach ($matches as $match) {
  907.               $attributes[$match[1]] = $match[2];
  908.             }
  909.  
  910.             // If there is a width in the style attributes:
  911.             if (isset($attributes['width']) && $width == -1)
  912.             {
  913.                 // check that the last two characters are px (pixels)
  914.                 if (strtolower(substr($attributes['width'], -2)) == 'px')
  915.                 {
  916.                     $proposed_width = substr($attributes['width'], 0, -2);
  917.                     // Now make sure that it's an integer and not something stupid.
  918.                     if (filter_var($proposed_width, FILTER_VALIDATE_INT))
  919.                     {
  920.                         $width = $proposed_width;
  921.                     }
  922.                 }
  923.             }
  924.  
  925.             // If there is a width in the style attributes:
  926.             if (isset($attributes['height']) && $height == -1)
  927.             {
  928.                 // check that the last two characters are px (pixels)
  929.                 if (strtolower(substr($attributes['height'], -2)) == 'px')
  930.                 {
  931.                     $proposed_height = substr($attributes['height'], 0, -2);
  932.                     // Now make sure that it's an integer and not something stupid.
  933.                     if (filter_var($proposed_height, FILTER_VALIDATE_INT))
  934.                     {
  935.                         $height = $proposed_height;
  936.                     }
  937.                 }
  938.             }
  939.  
  940.         }
  941.  
  942.         // Future enhancement:
  943.         // Look in the tag to see if there is a class or id specified that has a height or width attribute to it.
  944.  
  945.         // Far future enhancement
  946.         // 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
  947.         // Note that in this case, the class or id will have the img subselector for it to apply to the image.
  948.  
  949.         // ridiculously far future development
  950.         // 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.
  951.  
  952.         $result = array('height' => $height,
  953.                         'width' => $width);
  954.         return $result;
  955.     }
  956.  
  957.     // camel naming conventions
  958.     function getAllAttributes() {return $this->attr;}
  959.     function getAttribute($name) {return $this->__get($name);}
  960.     function setAttribute($name, $value) {$this->__set($name, $value);}
  961.     function hasAttribute($name) {return $this->__isset($name);}
  962.     function removeAttribute($name) {$this->__set($name, null);}
  963.     function getElementById($id) {return $this->find("#$id", 0);}
  964.     function getElementsById($id, $idx=null) {return $this->find("#$id", $idx);}
  965.     function getElementByTagName($name) {return $this->find($name, 0);}
  966.     function getElementsByTagName($name, $idx=null) {return $this->find($name, $idx);}
  967.     function parentNode() {return $this->parent();}
  968.     function childNodes($idx=-1) {return $this->children($idx);}
  969.     function firstChild() {return $this->first_child();}
  970.     function lastChild() {return $this->last_child();}
  971.     function nextSibling() {return $this->next_sibling();}
  972.     function previousSibling() {return $this->prev_sibling();}
  973.     function hasChildNodes() {return $this->has_child();}
  974.     function nodeName() {return $this->tag;}
  975.     function appendChild($node) {$node->parent($this); return $node;}
  976.  
  977. }
  978.  
  979. /**
  980.  * simple html dom parser
  981.  * Paperg - in the find routine: allow us to specify that we want case insensitive testing of the value of the selector.
  982.  * Paperg - change $size from protected to public so we can easily access it
  983.  * Paperg - added ForceTagsClosed in the constructor which tells us whether we trust the html or not.  Default is to NOT trust it.
  984.  *
  985.  * @package PlaceLocalInclude
  986.  */
  987. class simple_html_dom
  988. {
  989.     public $root = null;
  990.     public $nodes = array();
  991.     public $callback = null;
  992.     public $lowercase = false;
  993.     // Used to keep track of how large the text was when we started.
  994.     public $original_size;
  995.     public $size;
  996.     protected $pos;
  997.     protected $doc;
  998.     protected $char;
  999.     protected $cursor;
  1000.     protected $parent;
  1001.     protected $noise = array();
  1002.     protected $token_blank = " \t\r\n";
  1003.     protected $token_equal = ' =/>';
  1004.     protected $token_slash = " />\r\n\t";
  1005.     protected $token_attr = ' >';
  1006.     // Note that this is referenced by a child node, and so it needs to be public for that node to see this information.
  1007.     public $_charset = '';
  1008.     public $_target_charset = '';
  1009.     protected $default_br_text = "";
  1010.     public $default_span_text = "";
  1011.  
  1012.     // use isset instead of in_array, performance boost about 30%...
  1013.     protected $self_closing_tags = array('img'=>1, 'br'=>1, 'input'=>1, 'meta'=>1, 'link'=>1, 'hr'=>1, 'base'=>1, 'embed'=>1, 'spacer'=>1);
  1014.     protected $block_tags = array('root'=>1, 'body'=>1, 'form'=>1, 'div'=>1, 'span'=>1, 'table'=>1);
  1015.     // Known sourceforge issue #2977341
  1016.     // B tags that are not closed cause us to return everything to the end of the document.
  1017.     protected $optional_closing_tags = array(
  1018.         'tr'=>array('tr'=>1, 'td'=>1, 'th'=>1),
  1019.         'th'=>array('th'=>1),
  1020.         'td'=>array('td'=>1),
  1021.         'li'=>array('li'=>1),
  1022.         'dt'=>array('dt'=>1, 'dd'=>1),
  1023.         'dd'=>array('dd'=>1, 'dt'=>1),
  1024.         'dl'=>array('dd'=>1, 'dt'=>1),
  1025.         'p'=>array('p'=>1),
  1026.         'nobr'=>array('nobr'=>1),
  1027.         'b'=>array('b'=>1),
  1028.         'option'=>array('option'=>1),
  1029.     );
  1030.  
  1031.     function __construct($str=null, $lowercase=true, $forceTagsClosed=true, $target_charset=DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
  1032.     {
  1033.         if ($str)
  1034.         {
  1035.             if (preg_match("/^http:\/\//i",$str) || is_file($str))
  1036.             {
  1037.                 $this->load_file($str);
  1038.             }
  1039.             else
  1040.             {
  1041.                 $this->load($str, $lowercase, $stripRN, $defaultBRText, $defaultSpanText);
  1042.             }
  1043.         }
  1044.         // Forcing tags to be closed implies that we don't trust the html, but it can lead to parsing errors if we SHOULD trust the html.
  1045.         if (!$forceTagsClosed) {
  1046.             $this->optional_closing_array=array();
  1047.         }
  1048.         $this->_target_charset = $target_charset;
  1049.     }
  1050.  
  1051.     function __destruct()
  1052.     {
  1053.         $this->clear();
  1054.     }
  1055.  
  1056.     // load html from string
  1057.     function load($str, $lowercase=true, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
  1058.     {
  1059.         global $debug_object;
  1060.  
  1061.         // prepare
  1062.         $this->prepare($str, $lowercase, $stripRN, $defaultBRText, $defaultSpanText);
  1063.         // strip out cdata
  1064.         $this->remove_noise("'<!\[CDATA\[(.*?)\]\]>'is", true);
  1065.         // strip out comments
  1066.         $this->remove_noise("'<!--(.*?)-->'is");
  1067.         // Per sourceforge http://sourceforge.net/tracker/?func=detail&aid=2949097&group_id=218559&atid=1044037
  1068.         // Script tags removal now preceeds style tag removal.
  1069.         // strip out <script> tags
  1070.         $this->remove_noise("'<\s*script[^>]*[^/]>(.*?)<\s*/\s*script\s*>'is");
  1071.         $this->remove_noise("'<\s*script\s*>(.*?)<\s*/\s*script\s*>'is");
  1072.         // strip out <style> tags
  1073.         $this->remove_noise("'<\s*style[^>]*[^/]>(.*?)<\s*/\s*style\s*>'is");
  1074.         $this->remove_noise("'<\s*style\s*>(.*?)<\s*/\s*style\s*>'is");
  1075.         // strip out preformatted tags
  1076.         $this->remove_noise("'<\s*(?:code)[^>]*>(.*?)<\s*/\s*(?:code)\s*>'is");
  1077.         // strip out server side scripts
  1078.         $this->remove_noise("'(<\?)(.*?)(\?>)'s", true);
  1079.         // strip smarty scripts
  1080.         $this->remove_noise("'(\{\w)(.*?)(\})'s", true);
  1081.  
  1082.         // parsing
  1083.         while ($this->parse());
  1084.         // end
  1085.         $this->root->_[HDOM_INFO_END] = $this->cursor;
  1086.         $this->parse_charset();
  1087.  
  1088.         // make load function chainable
  1089.         return $this;
  1090.  
  1091.     }
  1092.  
  1093.     // load html from file
  1094.     function load_file()
  1095.     {
  1096.         $args = func_get_args();
  1097.         $this->load(call_user_func_array('file_get_contents', $args), true);
  1098.         // Throw an error if we can't properly load the dom.
  1099.         if (($error=error_get_last())!==null) {
  1100.             $this->clear();
  1101.             return false;
  1102.         }
  1103.     }
  1104.  
  1105.     // set callback function
  1106.     function set_callback($function_name)
  1107.     {
  1108.         $this->callback = $function_name;
  1109.     }
  1110.  
  1111.     // remove callback function
  1112.     function remove_callback()
  1113.     {
  1114.         $this->callback = null;
  1115.     }
  1116.  
  1117.     // save dom as string
  1118.     function save($filepath='')
  1119.     {
  1120.         $ret = $this->root->innertext();
  1121.         if ($filepath!=='') file_put_contents($filepath, $ret, LOCK_EX);
  1122.         return $ret;
  1123.     }
  1124.  
  1125.     // find dom node by css selector
  1126.     // Paperg - allow us to specify that we want case insensitive testing of the value of the selector.
  1127.     function find($selector, $idx=null, $lowercase=false)
  1128.     {
  1129.         return $this->root->find($selector, $idx, $lowercase);
  1130.     }
  1131.  
  1132.     // clean up memory due to php5 circular references memory leak...
  1133.     function clear()
  1134.     {
  1135.         foreach ($this->nodes as $n) {$n->clear(); $n = null;}
  1136.         // This add next line is documented in the sourceforge repository. 2977248 as a fix for ongoing memory leaks that occur even with the use of clear.
  1137.         if (isset($this->children)) foreach ($this->children as $n) {$n->clear(); $n = null;}
  1138.         if (isset($this->parent)) {$this->parent->clear(); unset($this->parent);}
  1139.         if (isset($this->root)) {$this->root->clear(); unset($this->root);}
  1140.         unset($this->doc);
  1141.         unset($this->noise);
  1142.     }
  1143.  
  1144.     function dump($show_attr=true)
  1145.     {
  1146.         $this->root->dump($show_attr);
  1147.     }
  1148.  
  1149.     // prepare HTML data and init everything
  1150.     protected function prepare($str, $lowercase=true, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
  1151.     {
  1152.         $this->clear();
  1153.  
  1154.         // set the length of content before we do anything to it.
  1155.         $this->size = strlen($str);
  1156.         // Save the original size of the html that we got in.  It might be useful to someone.
  1157.         $this->original_size = $this->size;
  1158.  
  1159.         //before we save the string as the doc...  strip out the \r \n's if we are told to.
  1160.         if ($stripRN) {
  1161.             $str = str_replace("\r", " ", $str);
  1162.             $str = str_replace("\n", " ", $str);
  1163.  
  1164.             // set the length of content since we have changed it.
  1165.             $this->size = strlen($str);
  1166.         }
  1167.  
  1168.         $this->doc = $str;
  1169.         $this->pos = 0;
  1170.         $this->cursor = 1;
  1171.         $this->noise = array();
  1172.         $this->nodes = array();
  1173.         $this->lowercase = $lowercase;
  1174.         $this->default_br_text = $defaultBRText;
  1175.         $this->default_span_text = $defaultSpanText;
  1176.         $this->root = new simple_html_dom_node($this);
  1177.         $this->root->tag = 'root';
  1178.         $this->root->_[HDOM_INFO_BEGIN] = -1;
  1179.         $this->root->nodetype = HDOM_TYPE_ROOT;
  1180.         $this->parent = $this->root;
  1181.         if ($this->size>0) $this->char = $this->doc[0];
  1182.     }
  1183.  
  1184.     // parse html content
  1185.     protected function parse()
  1186.     {
  1187.         if (($s = $this->copy_until_char('<'))==='')
  1188.         {
  1189.             return $this->read_tag();
  1190.         }
  1191.  
  1192.         // text
  1193.         $node = new simple_html_dom_node($this);
  1194.         ++$this->cursor;
  1195.         $node->_[HDOM_INFO_TEXT] = $s;
  1196.         $this->link_nodes($node, false);
  1197.         return true;
  1198.     }
  1199.  
  1200.     // 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.
  1201.     // 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
  1202.     // (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.
  1203.     protected function parse_charset()
  1204.     {
  1205.         global $debug_object;
  1206.  
  1207.         $charset = null;
  1208.  
  1209.         if (function_exists('get_last_retrieve_url_contents_content_type'))
  1210.         {
  1211.             $contentTypeHeader = get_last_retrieve_url_contents_content_type();
  1212.             $success = preg_match('/charset=(.+)/', $contentTypeHeader, $matches);
  1213.             if ($success)
  1214.             {
  1215.                 $charset = $matches[1];
  1216.                 if (is_object($debug_object)) {$debug_object->debug_log(2, 'header content-type found charset of: ' . $charset);}
  1217.             }
  1218.  
  1219.         }
  1220.  
  1221.         if (empty($charset))
  1222.         {
  1223.             $el = $this->root->find('meta[http-equiv=Content-Type]',0, true);
  1224.             if (!empty($el))
  1225.             {
  1226.                 $fullvalue = $el->content;
  1227.                 if (is_object($debug_object)) {$debug_object->debug_log(2, 'meta content-type tag found' . $fullvalue);}
  1228.  
  1229.                 if (!empty($fullvalue))
  1230.                 {
  1231.                     $success = preg_match('/charset=(.+)/i', $fullvalue, $matches);
  1232.                     if ($success)
  1233.                     {
  1234.                         $charset = $matches[1];
  1235.                     }
  1236.                     else
  1237.                     {
  1238.                         // If there is a meta tag, and they don't specify the character set, research says that it's typically ISO-8859-1
  1239.                         if (is_object($debug_object)) {$debug_object->debug_log(2, 'meta content-type tag couldn\'t be parsed. using iso-8859 default.');}
  1240.                         $charset = 'ISO-8859-1';
  1241.                     }
  1242.                 }
  1243.             }
  1244.         }
  1245.  
  1246.         // If we couldn't find a charset above, then lets try to detect one based on the text we got...
  1247.         if (empty($charset))
  1248.         {
  1249.             // Use this in case mb_detect_charset isn't installed/loaded on this machine.
  1250.             $charset = false;
  1251.             if (function_exists('mb_detect_encoding'))
  1252.             {
  1253.                 // Have php try to detect the encoding from the text given to us.
  1254.                 $charset = mb_detect_encoding($this->root->plaintext . "ascii", $encoding_list = array( "UTF-8", "CP1252" ) );
  1255.                 if (is_object($debug_object)) {$debug_object->debug_log(2, 'mb_detect found: ' . $charset);}
  1256.             }
  1257.  
  1258.             // and if this doesn't work...  then we need to just wrongheadedly assume it's UTF-8 so that we can move on - cause this will usually give us most of what we need...
  1259.             if ($charset === false)
  1260.             {
  1261.                 if (is_object($debug_object)) {$debug_object->debug_log(2, 'since mb_detect failed - using default of utf-8');}
  1262.                 $charset = 'UTF-8';
  1263.             }
  1264.         }
  1265.  
  1266.         // Since CP1252 is a superset, if we get one of it's subsets, we want it instead.
  1267.         if ((strtolower($charset) == strtolower('ISO-8859-1')) || (strtolower($charset) == strtolower('Latin1')) || (strtolower($charset) == strtolower('Latin-1')))
  1268.         {
  1269.             if (is_object($debug_object)) {$debug_object->debug_log(2, 'replacing ' . $charset . ' with CP1252 as its a superset');}
  1270.             $charset = 'CP1252';
  1271.         }
  1272.  
  1273.         if (is_object($debug_object)) {$debug_object->debug_log(1, 'EXIT - ' . $charset);}
  1274.  
  1275.         return $this->_charset = $charset;
  1276.     }
  1277.  
  1278.     // read tag info
  1279.     protected function read_tag()
  1280.     {
  1281.         if ($this->char!=='<')
  1282.         {
  1283.             $this->root->_[HDOM_INFO_END] = $this->cursor;
  1284.             return false;
  1285.         }
  1286.         $begin_tag_pos = $this->pos;
  1287.         $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1288.  
  1289.         // end tag
  1290.         if ($this->char==='/')
  1291.         {
  1292.             $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1293.             // This represents the change in the simple_html_dom trunk from revision 180 to 181.
  1294.             // $this->skip($this->token_blank_t);
  1295.             $this->skip($this->token_blank);
  1296.             $tag = $this->copy_until_char('>');
  1297.  
  1298.             // skip attributes in end tag
  1299.             if (($pos = strpos($tag, ' '))!==false)
  1300.                 $tag = substr($tag, 0, $pos);
  1301.  
  1302.             $parent_lower = strtolower($this->parent->tag);
  1303.             $tag_lower = strtolower($tag);
  1304.  
  1305.             if ($parent_lower!==$tag_lower)
  1306.             {
  1307.                 if (isset($this->optional_closing_tags[$parent_lower]) && isset($this->block_tags[$tag_lower]))
  1308.                 {
  1309.                     $this->parent->_[HDOM_INFO_END] = 0;
  1310.                     $org_parent = $this->parent;
  1311.  
  1312.                     while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower)
  1313.                         $this->parent = $this->parent->parent;
  1314.  
  1315.                     if (strtolower($this->parent->tag)!==$tag_lower) {
  1316.                         $this->parent = $org_parent; // restore origonal parent
  1317.                         if ($this->parent->parent) $this->parent = $this->parent->parent;
  1318.                         $this->parent->_[HDOM_INFO_END] = $this->cursor;
  1319.                         return $this->as_text_node($tag);
  1320.                     }
  1321.                 }
  1322.                 else if (($this->parent->parent) && isset($this->block_tags[$tag_lower]))
  1323.                 {
  1324.                     $this->parent->_[HDOM_INFO_END] = 0;
  1325.                     $org_parent = $this->parent;
  1326.  
  1327.                     while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower)
  1328.                         $this->parent = $this->parent->parent;
  1329.  
  1330.                     if (strtolower($this->parent->tag)!==$tag_lower)
  1331.                     {
  1332.                         $this->parent = $org_parent; // restore origonal parent
  1333.                         $this->parent->_[HDOM_INFO_END] = $this->cursor;
  1334.                         return $this->as_text_node($tag);
  1335.                     }
  1336.                 }
  1337.                 else if (($this->parent->parent) && strtolower($this->parent->parent->tag)===$tag_lower)
  1338.                 {
  1339.                     $this->parent->_[HDOM_INFO_END] = 0;
  1340.                     $this->parent = $this->parent->parent;
  1341.                 }
  1342.                 else
  1343.                     return $this->as_text_node($tag);
  1344.             }
  1345.  
  1346.             $this->parent->_[HDOM_INFO_END] = $this->cursor;
  1347.             if ($this->parent->parent) $this->parent = $this->parent->parent;
  1348.  
  1349.             $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1350.             return true;
  1351.         }
  1352.  
  1353.         $node = new simple_html_dom_node($this);
  1354.         $node->_[HDOM_INFO_BEGIN] = $this->cursor;
  1355.         ++$this->cursor;
  1356.         $tag = $this->copy_until($this->token_slash);
  1357.         $node->tag_start = $begin_tag_pos;
  1358.  
  1359.         // doctype, cdata & comments...
  1360.         if (isset($tag[0]) && $tag[0]==='!') {
  1361.             $node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until_char('>');
  1362.  
  1363.             if (isset($tag[2]) && $tag[1]==='-' && $tag[2]==='-') {
  1364.                 $node->nodetype = HDOM_TYPE_COMMENT;
  1365.                 $node->tag = 'comment';
  1366.             } else {
  1367.                 $node->nodetype = HDOM_TYPE_UNKNOWN;
  1368.                 $node->tag = 'unknown';
  1369.             }
  1370.             if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>';
  1371.             $this->link_nodes($node, true);
  1372.             $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1373.             return true;
  1374.         }
  1375.  
  1376.         // text
  1377.         if ($pos=strpos($tag, '<')!==false) {
  1378.             $tag = '<' . substr($tag, 0, -1);
  1379.             $node->_[HDOM_INFO_TEXT] = $tag;
  1380.             $this->link_nodes($node, false);
  1381.             $this->char = $this->doc[--$this->pos]; // prev
  1382.             return true;
  1383.         }
  1384.  
  1385.         if (!preg_match("/^[\w-:]+$/", $tag)) {
  1386.             $node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until('<>');
  1387.             if ($this->char==='<') {
  1388.                 $this->link_nodes($node, false);
  1389.                 return true;
  1390.             }
  1391.  
  1392.             if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>';
  1393.             $this->link_nodes($node, false);
  1394.             $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1395.             return true;
  1396.         }
  1397.  
  1398.         // begin tag
  1399.         $node->nodetype = HDOM_TYPE_ELEMENT;
  1400.         $tag_lower = strtolower($tag);
  1401.         $node->tag = ($this->lowercase) ? $tag_lower : $tag;
  1402.  
  1403.         // handle optional closing tags
  1404.         if (isset($this->optional_closing_tags[$tag_lower]) )
  1405.         {
  1406.             while (isset($this->optional_closing_tags[$tag_lower][strtolower($this->parent->tag)]))
  1407.             {
  1408.                 $this->parent->_[HDOM_INFO_END] = 0;
  1409.                 $this->parent = $this->parent->parent;
  1410.             }
  1411.             $node->parent = $this->parent;
  1412.         }
  1413.  
  1414.         $guard = 0; // prevent infinity loop
  1415.         $space = array($this->copy_skip($this->token_blank), '', '');
  1416.  
  1417.         // attributes
  1418.         do
  1419.         {
  1420.             if ($this->char!==null && $space[0]==='')
  1421.             {
  1422.                 break;
  1423.             }
  1424.             $name = $this->copy_until($this->token_equal);
  1425.             if ($guard===$this->pos)
  1426.             {
  1427.                 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1428.                 continue;
  1429.             }
  1430.             $guard = $this->pos;
  1431.  
  1432.             // handle endless '<'
  1433.             if ($this->pos>=$this->size-1 && $this->char!=='>') {
  1434.                 $node->nodetype = HDOM_TYPE_TEXT;
  1435.                 $node->_[HDOM_INFO_END] = 0;
  1436.                 $node->_[HDOM_INFO_TEXT] = '<'.$tag . $space[0] . $name;
  1437.                 $node->tag = 'text';
  1438.                 $this->link_nodes($node, false);
  1439.                 return true;
  1440.             }
  1441.  
  1442.             // handle mismatch '<'
  1443.             if ($this->doc[$this->pos-1]=='<') {
  1444.                 $node->nodetype = HDOM_TYPE_TEXT;
  1445.                 $node->tag = 'text';
  1446.                 $node->attr = array();
  1447.                 $node->_[HDOM_INFO_END] = 0;
  1448.                 $node->_[HDOM_INFO_TEXT] = substr($this->doc, $begin_tag_pos, $this->pos-$begin_tag_pos-1);
  1449.                 $this->pos -= 2;
  1450.                 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1451.                 $this->link_nodes($node, false);
  1452.                 return true;
  1453.             }
  1454.  
  1455.             if ($name!=='/' && $name!=='') {
  1456.                 $space[1] = $this->copy_skip($this->token_blank);
  1457.                 $name = $this->restore_noise($name);
  1458.                 if ($this->lowercase) $name = strtolower($name);
  1459.                 if ($this->char==='=') {
  1460.                     $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1461.                     $this->parse_attr($node, $name, $space);
  1462.                 }
  1463.                 else {
  1464.                     //no value attr: nowrap, checked selected...
  1465.                     $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO;
  1466.                     $node->attr[$name] = true;
  1467.                     if ($this->char!='>') $this->char = $this->doc[--$this->pos]; // prev
  1468.                 }
  1469.                 $node->_[HDOM_INFO_SPACE][] = $space;
  1470.                 $space = array($this->copy_skip($this->token_blank), '', '');
  1471.             }
  1472.             else
  1473.                 break;
  1474.         } while ($this->char!=='>' && $this->char!=='/');
  1475.  
  1476.         $this->link_nodes($node, true);
  1477.         $node->_[HDOM_INFO_ENDSPACE] = $space[0];
  1478.  
  1479.         // check self closing
  1480.         if ($this->copy_until_char_escape('>')==='/')
  1481.         {
  1482.             $node->_[HDOM_INFO_ENDSPACE] .= '/';
  1483.             $node->_[HDOM_INFO_END] = 0;
  1484.         }
  1485.         else
  1486.         {
  1487.             // reset parent
  1488.             if (!isset($this->self_closing_tags[strtolower($node->tag)])) $this->parent = $node;
  1489.         }
  1490.         $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1491.  
  1492.         // If it's a BR tag, we need to set it's text to the default text.
  1493.         // This way when we see it in plaintext, we can generate formatting that the user wants.
  1494.         // since a br tag never has sub nodes, this works well.
  1495.         if ($node->tag == "br")
  1496.         {
  1497.             $node->_[HDOM_INFO_INNER] = $this->default_br_text;
  1498.         }
  1499.  
  1500.         return true;
  1501.     }
  1502.  
  1503.     // parse attributes
  1504.     protected function parse_attr($node, $name, &$space)
  1505.     {
  1506.         // Per sourceforge: http://sourceforge.net/tracker/?func=detail&aid=3061408&group_id=218559&atid=1044037
  1507.         // If the attribute is already defined inside a tag, only pay atetntion to the first one as opposed to the last one.
  1508.         if (isset($node->attr[$name]))
  1509.         {
  1510.             return;
  1511.         }
  1512.  
  1513.         $space[2] = $this->copy_skip($this->token_blank);
  1514.         switch ($this->char) {
  1515.             case '"':
  1516.                 $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE;
  1517.                 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1518.                 $node->attr[$name] = $this->restore_noise($this->copy_until_char_escape('"'));
  1519.                 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1520.                 break;
  1521.             case '\'':
  1522.                 $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_SINGLE;
  1523.                 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1524.                 $node->attr[$name] = $this->restore_noise($this->copy_until_char_escape('\''));
  1525.                 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1526.                 break;
  1527.             default:
  1528.                 $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO;
  1529.                 $node->attr[$name] = $this->restore_noise($this->copy_until($this->token_attr));
  1530.         }
  1531.         // PaperG: Attributes should not have \r or \n in them, that counts as html whitespace.
  1532.         $node->attr[$name] = str_replace("\r", "", $node->attr[$name]);
  1533.         $node->attr[$name] = str_replace("\n", "", $node->attr[$name]);
  1534.         // 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.
  1535.         if ($name == "class") {
  1536.             $node->attr[$name] = trim($node->attr[$name]);
  1537.         }
  1538.     }
  1539.  
  1540.     // link node's parent
  1541.     protected function link_nodes(&$node, $is_child)
  1542.     {
  1543.         $node->parent = $this->parent;
  1544.         $this->parent->nodes[] = $node;
  1545.         if ($is_child)
  1546.         {
  1547.             $this->parent->children[] = $node;
  1548.         }
  1549.     }
  1550.  
  1551.     // as a text node
  1552.     protected function as_text_node($tag)
  1553.     {
  1554.         $node = new simple_html_dom_node($this);
  1555.         ++$this->cursor;
  1556.         $node->_[HDOM_INFO_TEXT] = '</' . $tag . '>';
  1557.         $this->link_nodes($node, false);
  1558.         $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1559.         return true;
  1560.     }
  1561.  
  1562.     protected function skip($chars)
  1563.     {
  1564.         $this->pos += strspn($this->doc, $chars, $this->pos);
  1565.         $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1566.     }
  1567.  
  1568.     protected function copy_skip($chars)
  1569.     {
  1570.         $pos = $this->pos;
  1571.         $len = strspn($this->doc, $chars, $pos);
  1572.         $this->pos += $len;
  1573.         $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1574.         if ($len===0) return '';
  1575.         return substr($this->doc, $pos, $len);
  1576.     }
  1577.  
  1578.     protected function copy_until($chars)
  1579.     {
  1580.         $pos = $this->pos;
  1581.         $len = strcspn($this->doc, $chars, $pos);
  1582.         $this->pos += $len;
  1583.         $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
  1584.         return substr($this->doc, $pos, $len);
  1585.     }
  1586.  
  1587.     protected function copy_until_char($char)
  1588.     {
  1589.         if ($this->char===null) return '';
  1590.  
  1591.         if (($pos = strpos($this->doc, $char, $this->pos))===false) {
  1592.             $ret = substr($this->doc, $this->pos, $this->size-$this->pos);
  1593.             $this->char = null;
  1594.             $this->pos = $this->size;
  1595.             return $ret;
  1596.         }
  1597.  
  1598.         if ($pos===$this->pos) return '';
  1599.         $pos_old = $this->pos;
  1600.         $this->char = $this->doc[$pos];
  1601.         $this->pos = $pos;
  1602.         return substr($this->doc, $pos_old, $pos-$pos_old);
  1603.     }
  1604.  
  1605.     protected function copy_until_char_escape($char)
  1606.     {
  1607.         if ($this->char===null) return '';
  1608.  
  1609.         $start = $this->pos;
  1610.         while (1)
  1611.         {
  1612.             if (($pos = strpos($this->doc, $char, $start))===false)
  1613.             {
  1614.                 $ret = substr($this->doc, $this->pos, $this->size-$this->pos);
  1615.                 $this->char = null;
  1616.                 $this->pos = $this->size;
  1617.                 return $ret;
  1618.             }
  1619.  
  1620.             if ($pos===$this->pos) return '';
  1621.  
  1622.             if ($this->doc[$pos-1]==='\\') {
  1623.                 $start = $pos+1;
  1624.                 continue;
  1625.             }
  1626.  
  1627.             $pos_old = $this->pos;
  1628.             $this->char = $this->doc[$pos];
  1629.             $this->pos = $pos;
  1630.             return substr($this->doc, $pos_old, $pos-$pos_old);
  1631.         }
  1632.     }
  1633.  
  1634.     // remove noise from html content
  1635.     // save the noise in the $this->noise array.
  1636.     protected function remove_noise($pattern, $remove_tag=false)
  1637.     {
  1638.         global $debug_object;
  1639.         if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
  1640.  
  1641.         $count = preg_match_all($pattern, $this->doc, $matches, PREG_SET_ORDER|PREG_OFFSET_CAPTURE);
  1642.  
  1643.         for ($i=$count-1; $i>-1; --$i)
  1644.         {
  1645.             $key = '___noise___'.sprintf('% 5d', count($this->noise)+1000);
  1646.             if (is_object($debug_object)) { $debug_object->debug_log(2, 'key is: ' . $key); }
  1647.             $idx = ($remove_tag) ? 0 : 1;
  1648.             $this->noise[$key] = $matches[$i][$idx][0];
  1649.             $this->doc = substr_replace($this->doc, $key, $matches[$i][$idx][1], strlen($matches[$i][$idx][0]));
  1650.         }
  1651.  
  1652.         // reset the length of content
  1653.         $this->size = strlen($this->doc);
  1654.         if ($this->size>0)
  1655.         {
  1656.             $this->char = $this->doc[0];
  1657.         }
  1658.     }
  1659.  
  1660.     // restore noise to html content
  1661.     function restore_noise($text)
  1662.     {
  1663.         global $debug_object;
  1664.         if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
  1665.  
  1666.         while (($pos=strpos($text, '___noise___'))!==false)
  1667.         {
  1668.             // Sometimes there is a broken piece of markup, and we don't GET the pos+11 etc... token which indicates a problem outside of us...
  1669.             if (strlen($text) > $pos+15)
  1670.             {
  1671.                 $key = '___noise___'.$text[$pos+11].$text[$pos+12].$text[$pos+13].$text[$pos+14].$text[$pos+15];
  1672.                 if (is_object($debug_object)) { $debug_object->debug_log(2, 'located key of: ' . $key); }
  1673.  
  1674.                 if (isset($this->noise[$key]))
  1675.                 {
  1676.                     $text = substr($text, 0, $pos).$this->noise[$key].substr($text, $pos+16);
  1677.                 }
  1678.                 else
  1679.                 {
  1680.                     // do this to prevent an infinite loop.
  1681.                     $text = substr($text, 0, $pos).'UNDEFINED NOISE FOR KEY: '.$key . substr($text, $pos+16);
  1682.                 }
  1683.             }
  1684.             else
  1685.             {
  1686.                 // There is no valid key being given back to us... We must get rid of the ___noise___ or we will have a problem.
  1687.                 $text = substr($text, 0, $pos).'NO NUMERIC NOISE KEY' . substr($text, $pos+11);
  1688.             }
  1689.         }
  1690.         return $text;
  1691.     }
  1692.  
  1693.     // Sometimes we NEED one of the noise elements.
  1694.     function search_noise($text)
  1695.     {
  1696.         global $debug_object;
  1697.         if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
  1698.  
  1699.         foreach($this->noise as $noiseElement)
  1700.         {
  1701.             if (strpos($noiseElement, $text)!==false)
  1702.             {
  1703.                 return $noiseElement;
  1704.             }
  1705.         }
  1706.     }
  1707.     function __toString()
  1708.     {
  1709.         return $this->root->innertext();
  1710.     }
  1711.  
  1712.     function __get($name)
  1713.     {
  1714.         switch ($name)
  1715.         {
  1716.             case 'outertext':
  1717.                 return $this->root->innertext();
  1718.             case 'innertext':
  1719.                 return $this->root->innertext();
  1720.             case 'plaintext':
  1721.                 return $this->root->text();
  1722.             case 'charset':
  1723.                 return $this->_charset;
  1724.             case 'target_charset':
  1725.                 return $this->_target_charset;
  1726.         }
  1727.     }
  1728.  
  1729.     // camel naming conventions
  1730.     function childNodes($idx=-1) {return $this->root->childNodes($idx);}
  1731.     function firstChild() {return $this->root->first_child();}
  1732.     function lastChild() {return $this->root->last_child();}
  1733.     function createElement($name, $value=null) {return @str_get_html("<$name>$value</$name>")->first_child();}
  1734.     function createTextNode($value) {return @end(str_get_html($value)->nodes);}
  1735.     function getElementById($id) {return $this->find("#$id", 0);}
  1736.     function getElementsById($id, $idx=null) {return $this->find("#$id", $idx);}
  1737.     function getElementByTagName($name) {return $this->find($name, 0);}
  1738.     function getElementsByTagName($name, $idx=-1) {return $this->find($name, $idx);}
  1739.     function loadFile() {$args = func_get_args();$this->load_file($args);}
  1740. }
  1741.  
  1742. ?>
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