Moving app to separate directory, scanning for PBN files in a separate directory

Fixes #2

5 files changed, 1279 insertions, 0 deletions

diff --git a/tdd/.htaccess b/tdd/.htaccess
new file mode 100644
index 0000000..fad82c6
--- /dev/null
+++ b/tdd/.htaccess
@@ -0,0 +1,16 @@
+<Files tdd-protocol.php>
+    <IfModule !mod_authz_core.c> # Apache 2.2
+        Order allow,deny
+        Allow from all
+    </IfModule>
+    <IfModule mod_authz_core.c>  # Apache 2.4
+        Require all granted
+    </IfModule>
+</Files>
+<IfModule !mod_authz_core.c> # Apache 2.2
+    Order allow,deny
+    Deny from all
+</IfModule>
+<IfModule mod_authz_core.c>  # Apache 2.4
+    Require all denied
+</IfModule>
diff --git a/tdd/tdd-bootstrap.php b/tdd/tdd-bootstrap.php
new file mode 100644
index 0000000..f22cd8e
--- /dev/null
+++ b/tdd/tdd-bootstrap.php
@@ -0,0 +1,203 @@
+<?php
+
+require_once('tdd-simple-html-dom.php');
+
+class Protocol {
+
+    function __construct($prefix, $round, $board) {
+        $this->prefix = $prefix;
+        $this->round = $round;
+        $this->board = $board;
+        $this->deals_by_tables = array();
+        if(!file_exists($this->get_filename())) {
+            throw new Exception('file not found: ' . $this->get_filename());
+        }
+    }
+
+    function get_filename() {
+        return '..' . DIRECTORY_SEPARATOR . $this->prefix . $this->round . 'b-' . $this->board . '.html';
+    }
+
+    function set_deal($table, $deal) {
+        $this->deals_by_tables[$table] = $deal;
+    }
+
+    function output() {
+        $content = file_get_contents($this->get_filename());
+
+        $dom = str_get_html($content);
+        $header_td1 = $dom->find("/html/body/table/tr/td[class=\"bdcc12\"]", 0);
+        $header_tr = $header_td1->parent;
+        $tr = @$header_tr->next_sibling();
+        while($tr) {
+            $td = $tr->find('td/a', 0);
+            $table = trim($td->innertext);
+            $table = str_replace('&nbsp;', '', $table);
+            $table = (int)$table;
+            if($table && array_key_exists($table, $this->deals_by_tables)) {
+                $contract1 = trim(str_replace('&nbsp;', '', $tr->find('td[class="bdc"]', 0)->innertext));
+                $score1 = trim(str_replace('&nbsp;', '', end($tr->find('td'))->innertext));
+                $contract2 = trim(str_replace('&nbsp;', '', $tr->next_sibling()->find('td[class="bdc"]', 0)->innertext));
+                $score2 = trim(str_replace('&nbsp;', '', end($tr->next_sibling()->find('td'))->innertext));
+
+                $deal = $this->deals_by_tables[$table];
+                $insert = "<a href=\"#table-$table\"><h4 id=\"table-$table\">Stół $table &ndash; Rozdanie {$deal->deal_num}</h4></a>";
+                // if is played on both tables of a match
+                // note that the contract field for arbitral scores starts with 'A' (e.g. 'ARB' or 'AAA')
+                if(($score1 !== '' || strpos($contract1, 'A') === 0)
+                      && ($score2 !== '' || strpos($contract2, 'A') === 0)) {
+                    $insert .= $deal->html();
+                } else {
+                    $insert .= '<p>...</p>';
+                }
+
+                $tr->outertext = '<tr class="tdd-header"><td colspan="7">' . $insert . '</td></tr>' . $tr->outertext;
+            }
+            $tr = @$tr->next_sibling();
+        }
+
+        $header_tr2 = $header_tr->next_sibling();
+        $header_tr->outertext = '';
+        $header_tr2->outertext = '';
+        $dom->find('/html/body/table/tr', 0)->outertext = '';
+
+        $head = $dom->find('/html/head', 0);
+        $head->innertext .= '<link rel="stylesheet" type="text/css" href="css/tdd.css" />'
+            . '<script src="https://code.jquery.com/jquery-3.3.1.min.js" type="text/javascript"></script>'
+            . '<script src="sklady/tdd.js" type="text/javascript"></script>';
+
+        // replacing meta http-equiv refresh with a javascript refresh to preserve hash in the result page
+        $meta = $head->find('meta');
+        foreach ($meta as $metaTag) {
+            if ($metaTag->hasAttribute('http-equiv') && strtolower($metaTag->getAttribute('http-equiv')) == 'refresh') {
+                $head->innertext = str_replace($metaTag->outertext, '', $head->innertext) . '<script type="text/javascript">setTimeout(function() { location.reload(); }, ' . ($metaTag->getAttribute('content') * 1000) . ');</script>';
+                break;
+            }
+        }
+
+        print $dom->outertext;
+    }
+
+}
+
+class NoSuchDealNumber extends Exception {
+}
+
+class Deal {
+
+    function __construct($filename, $num_in_pbn) {
+        $this->deal_num = $num_in_pbn;
+        $this->_parse($filename, $num_in_pbn);
+    }
+
+    function _parse($filename, $num_in_pbn) {
+        $pbn = file_get_contents($filename);
+        $start = strpos($pbn, '[Board "' . $num_in_pbn . '"]');
+        if($start === false) {
+            throw new NoSuchDealNumber($num_in_pbn);
+        }
+
+        $pbn = substr($pbn, $start + 5);
+        $stop = strpos($pbn,'[Board "');
+        if($stop != false) {
+            $pbn = substr($pbn, 0, $stop);
+        }
+
+        preg_match('|Dealer "([NESW])"|', $pbn, $m);
+        $this->dealer = $m[1];
+
+        preg_match('|Vulnerable "([^"]+)"|', $pbn, $m);
+        $this->vuln = $m[1];
+        if($this->vuln == 'None') {
+            $this->vuln = '-';
+        } else if($this->vuln == 'All') {
+            $this->vuln = 'Obie';
+        }
+
+        preg_match('|Ability "([^"]+)"|', $pbn, $m);
+        if($m[1]) {
+            $this->ability = explode(' ',$m[1]);
+        }
+
+        preg_match('|Minimax "([^"]+)"|', $pbn, $m);
+        $this->minimax = $m[1];
+
+        preg_match('|Deal "(N:)?([^"]+)"|', $pbn, $m);
+        $this->hands = explode(' ',$m[2]);
+    }
+
+    function html() {
+        ob_start();
+        include('tdd-handrecord-tpl.php');
+        return ob_get_clean();
+    }
+
+    function format_hand($hand_num) {
+        $hand = $this->hands[$hand_num];
+        $hand = str_replace('T','10',$hand);
+        $suits = explode('.',$hand);
+        $str = '<img src="images/S.gif" alt="S" /> '.$suits[0].'<br />';
+        $str .= '<img src="images/H.gif" alt="H" /> '.$suits[1].'<br />';
+        $str .= '<img src="images/D.gif" alt="D" /> '.$suits[2].'<br />';
+        $str .= '<img src="images/C.gif" alt="C" /> '.$suits[3];
+        return $str;
+    }
+
+    function format_ability($ability_num) {
+        $ability = $this->ability[$ability_num];
+        $ab = array($ability[0], $ability[2], $ability[3], $ability[4], $ability[5], $ability[6]);
+        foreach($ab as $k=>$v) {
+            switch($v) {
+                case 'A': $ab[$k] = '10'; break;
+                case 'B': $ab[$k] = '11'; break;
+                case 'C': $ab[$k] = '12'; break;
+                case 'D': $ab[$k] = '13'; break;
+            }
+        }
+        return "<td class='an4'>{$ab[0]}</td>
+            <td class='an1'>{$ab[1]}</td>
+            <td class='an1'>{$ab[2]}</td>
+            <td class='an1'>{$ab[3]}</td>
+            <td class='an1'>{$ab[4]}</td>
+            <td class='an1'>{$ab[5]}</td>";
+    }
+
+    function format_minimax() {
+        $minimax = $this->minimax;
+        $minimax = preg_replace('|^(..)D(.+)|','$1x$2', $minimax);
+        $minimax = preg_replace('|^(..)R(.+)|','$1xx$2', $minimax);
+        $minimax = preg_replace('|^(.)N(.+)|','$1NT$2', $minimax);
+        $minimax = preg_replace('/(\d)([SHDCN])(T?)(x*)([NESW])(.*)/','$1 <img src="images/$2.gif" alt="$2$3" /> $4 $5, $6', $minimax);
+        return $minimax;
+    }
+
+}
+
+function load_deals_for_tables($prefix, $round, $board_in_teamy) {
+    $deals_by_tables = array();
+
+    $prefix = preg_quote($prefix);
+    $filename_regex = "/$prefix-r$round-t(\d+)-b(\d+).pbn/";
+    foreach(scandir('.') as $filename) {
+        if(preg_match($filename_regex, $filename, $match)) {
+            $file_table = $match[1];
+            $file_start_board = $match[2];
+
+            $first_num_in_pbn = array();
+            preg_match('/\[Board "(\d+)"\]/', file_get_contents($filename), $first_num_in_pbn);
+            $first_num_in_pbn = $first_num_in_pbn ? intval($first_num_in_pbn[1]) : 1;
+
+            // 1 in teamy -> 1 in pbn; 24 in teamy -> 24 in pbn; 25 in teamy -> 1 in pbn
+            // if PBN doesn't start with Board 1, it's been adjusted
+            $num_in_pbn = $board_in_teamy - $file_start_board + $first_num_in_pbn;
+
+            try {
+                $deal = new Deal($filename, $num_in_pbn);
+                $deals_by_tables[$file_table] = $deal;
+            } catch (NoSuchDealNumber $e) {
+                // ignore if the deal does not exist in the file
+            }
+        }
+    }
+    return $deals_by_tables;
+}
diff --git a/tdd/tdd-handrecord-tpl.php b/tdd/tdd-handrecord-tpl.php
new file mode 100644
index 0000000..65836cf
--- /dev/null
+++ b/tdd/tdd-handrecord-tpl.php
@@ -0,0 +1,56 @@
+<table class="handrecord">
+    <tr>
+        <td>
+            <h4>
+                <?php echo $this->dealer; ?><br>
+                <?php echo $this->vuln; ?>
+            </h4>
+        </td>
+        <td><?php echo $this->format_hand(0); ?></td>
+        <td>&nbsp;</td>
+    </tr>
+    <tr>
+        <td><?php echo $this->format_hand(3); ?></td>
+        <td><img src="images/<?php echo ($this->deal_num)%16 ? ($this->deal_num)%16 : 16; ?>.gif" 
+            alt="<?php echo $this->dealer.'/'.$this->vuln; ?>" /></td>
+        <td><?php echo $this->format_hand(1); ?></td>
+    </tr>
+    <tr>
+        <td>&nbsp;</td>
+        <td><?php echo $this->format_hand(2); ?></td>
+        <td>&nbsp;</td>
+    </tr>
+    <?php if($this->ability): ?>
+    <tr><td colspan="5">
+        <small class="sm">Maksymalna liczba lew:</small>
+        <table class="ability" border="0" cellspacing="0" cellpadding="0">
+        <tr>
+            <td class="an2">&nbsp;</td>
+            <td class="an3"><img src="images/N.gif" alt="NT" /></td>
+            <td class="an3"><img src="images/S.gif" alt="S" /></td>
+            <td class="an3"><img src="images/H.gif" alt="H" /></td>
+            <td class="an3"><img src="images/D.gif" alt="D" /></td>
+            <td class="an3"><img src="images/C.gif" alt="C" /></td>
+            <td>&nbsp;</td>
+            <td class="an2">&nbsp;</td>
+            <td class="an3"><img src="images/N.gif" alt="NT" /></td>
+            <td class="an3"><img src="images/S.gif" alt="S" /></td>
+            <td class="an3"><img src="images/H.gif" alt="H" /></td>
+            <td class="an3"><img src="images/D.gif" alt="D" /></td>
+            <td class="an3"><img src="images/C.gif" alt="C" /></td>
+        </tr>
+        <tr>
+            <?php echo $this->format_ability(0); ?>
+            <td>&nbsp;</td>
+            <?php echo $this->format_ability(1); ?>
+        </tr>
+        <tr>
+            <?php echo $this->format_ability(2); ?>
+            <td>&nbsp;</td>
+            <?php echo $this->format_ability(3); ?>
+        </tr>
+        </table>
+        Minimax: <?php echo $this->format_minimax(); ?>
+    </td></tr>
+    <?php endif; ?>
+</table>
diff --git a/tdd/tdd-protocol.php b/tdd/tdd-protocol.php
new file mode 100644
index 0000000..3dcc0d8
--- /dev/null
+++ b/tdd/tdd-protocol.php
@@ -0,0 +1,29 @@
+<?php
+
+$prefix = $_GET['prefix'];
+$round = (int)$_GET['round'];
+$board = (int)$_GET['board'];
+
+require_once('tdd-bootstrap.php');
+
+$protocol = new Protocol($prefix, $round, $board);
+
+// security check
+$html_filename = $protocol->get_filename();
+$len = strlen($html_filename);
+$request_uri_ending = substr($_SERVER['REQUEST_URI'], -$len-1);
+if($request_uri_ending != '/' . $html_filename) {
+    die('This script cannot be called directly!');
+}
+//
+
+$deals_by_tables = load_deals_for_tables($prefix, $round, $board);
+if (count($deals_by_tables) > 0) {
+    foreach($deals_by_tables as $table => $deal) {
+        $protocol->set_deal($table, $deal);
+    }
+    echo $protocol->output();
+}
+else {
+    readfile($html_filename);
+}
diff --git a/tdd/tdd-simple-html-dom.php b/tdd/tdd-simple-html-dom.php
new file mode 100644
index 0000000..b3b9ddd
--- /dev/null
+++ b/tdd/tdd-simple-html-dom.php
@@ -0,0 +1,975 @@
+<?php
+/*******************************************************************************
+Version: 1.11 ($Rev: 175 $)
+Website: http://sourceforge.net/projects/simplehtmldom/
+Author: S.C. Chen <me578022@gmail.com>
+Acknowledge: Jose Solorzano (https://sourceforge.net/projects/php-html/)
+Contributions by:
+    Yousuke Kumakura (Attribute filters)
+    Vadim Voituk (Negative indexes supports of "find" method)
+    Antcs (Constructor with automatically load contents either text or file/url)
+Licensed under The MIT License
+Redistributions of files must retain the above copyright notice.
+*******************************************************************************/
+
+define('HDOM_TYPE_ELEMENT', 1);
+define('HDOM_TYPE_COMMENT', 2);
+define('HDOM_TYPE_TEXT',    3);
+define('HDOM_TYPE_ENDTAG',  4);
+define('HDOM_TYPE_ROOT',    5);
+define('HDOM_TYPE_UNKNOWN', 6);
+define('HDOM_QUOTE_DOUBLE', 0);
+define('HDOM_QUOTE_SINGLE', 1);
+define('HDOM_QUOTE_NO',     3);
+define('HDOM_INFO_BEGIN',   0);
+define('HDOM_INFO_END',     1);
+define('HDOM_INFO_QUOTE',   2);
+define('HDOM_INFO_SPACE',   3);
+define('HDOM_INFO_TEXT',    4);
+define('HDOM_INFO_INNER',   5);
+define('HDOM_INFO_OUTER',   6);
+define('HDOM_INFO_ENDSPACE',7);
+
+// helper functions
+// -----------------------------------------------------------------------------
+// get html dom form file
+function file_get_html() {
+    $dom = new simple_html_dom;
+    $args = func_get_args();
+    $dom->load(call_user_func_array('file_get_contents', $args), true);
+    return $dom;
+}
+
+// get html dom form string
+function str_get_html($str, $lowercase=true) {
+    $dom = new simple_html_dom;
+    $dom->load($str, $lowercase);
+    return $dom;
+}
+
+// dump html dom tree
+function dump_html_tree($node, $show_attr=true, $deep=0) {
+    $lead = str_repeat('    ', $deep);
+    echo $lead.$node->tag;
+    if ($show_attr && count($node->attr)>0) {
+        echo '(';
+        foreach($node->attr as $k=>$v)
+            echo "[$k]=>\"".$node->$k.'", ';
+        echo ')';
+    }
+    echo "\n";
+
+    foreach($node->nodes as $c)
+        dump_html_tree($c, $show_attr, $deep+1);
+}
+
+// get dom form file (deprecated)
+function file_get_dom() {
+    $dom = new simple_html_dom;
+    $args = func_get_args();
+    $dom->load(call_user_func_array('file_get_contents', $args), true);
+    return $dom;
+}
+
+// get dom form string (deprecated)
+function str_get_dom($str, $lowercase=true) {
+    $dom = new simple_html_dom;
+    $dom->load($str, $lowercase);
+    return $dom;
+}
+
+// simple html dom node
+// -----------------------------------------------------------------------------
+class simple_html_dom_node {
+    public $nodetype = HDOM_TYPE_TEXT;
+    public $tag = 'text';
+    public $attr = array();
+    public $children = array();
+    public $nodes = array();
+    public $parent = null;
+    public $_ = array();
+    private $dom = null;
+
+    function __construct($dom) {
+        $this->dom = $dom;
+        $dom->nodes[] = $this;
+    }
+
+    function __destruct() {
+        $this->clear();
+    }
+
+    function __toString() {
+        return $this->outertext();
+    }
+
+    // clean up memory due to php5 circular references memory leak...
+    function clear() {
+        $this->dom = null;
+        $this->nodes = null;
+        $this->parent = null;
+        $this->children = null;
+    }
+    
+    // dump node's tree
+    function dump($show_attr=true) {
+        dump_html_tree($this, $show_attr);
+    }
+
+    // returns the parent of node
+    function parent() {
+        return $this->parent;
+    }
+
+    // returns children of node
+    function children($idx=-1) {
+        if ($idx===-1) return $this->children;
+        if (isset($this->children[$idx])) return $this->children[$idx];
+        return null;
+    }
+
+    // returns the first child of node
+    function first_child() {
+        if (count($this->children)>0) return $this->children[0];
+        return null;
+    }
+
+    // returns the last child of node
+    function last_child() {
+        if (($count=count($this->children))>0) return $this->children[$count-1];
+        return null;
+    }
+
+    // returns the next sibling of node    
+    function next_sibling() {
+        if ($this->parent===null) return null;
+        $idx = 0;
+        $count = count($this->parent->children);
+        while ($idx<$count && $this!==$this->parent->children[$idx])
+            ++$idx;
+        if (++$idx>=$count) return null;
+        return $this->parent->children[$idx];
+    }
+
+    // returns the previous sibling of node
+    function prev_sibling() {
+        if ($this->parent===null) return null;
+        $idx = 0;
+        $count = count($this->parent->children);
+        while ($idx<$count && $this!==$this->parent->children[$idx])
+            ++$idx;
+        if (--$idx<0) return null;
+        return $this->parent->children[$idx];
+    }
+
+    // get dom node's inner html
+    function innertext() {
+        if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER];
+        if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
+
+        $ret = '';
+        foreach($this->nodes as $n)
+            $ret .= $n->outertext();
+        return $ret;
+    }
+
+    // get dom node's outer text (with tag)
+    function outertext() {
+        if ($this->tag==='root') return $this->innertext();
+
+        // trigger callback
+        if ($this->dom->callback!==null)
+            call_user_func_array($this->dom->callback, array($this));
+
+        if (isset($this->_[HDOM_INFO_OUTER])) return $this->_[HDOM_INFO_OUTER];
+        if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
+
+        // render begin tag
+        $ret = $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]->makeup();
+
+        // render inner text
+        if (isset($this->_[HDOM_INFO_INNER]))
+            $ret .= $this->_[HDOM_INFO_INNER];
+        else {
+            foreach($this->nodes as $n)
+                $ret .= $n->outertext();
+        }
+
+        // render end tag
+        if(isset($this->_[HDOM_INFO_END]) && $this->_[HDOM_INFO_END]!=0)
+            $ret .= '</'.$this->tag.'>';
+        return $ret;
+    }
+
+    // get dom node's plain text
+    function text() {
+        if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER];
+        switch ($this->nodetype) {
+            case HDOM_TYPE_TEXT: return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
+            case HDOM_TYPE_COMMENT: return '';
+            case HDOM_TYPE_UNKNOWN: return '';
+        }
+        if (strcasecmp($this->tag, 'script')===0) return '';
+        if (strcasecmp($this->tag, 'style')===0) return '';
+
+        $ret = '';
+        foreach($this->nodes as $n)
+            $ret .= $n->text();
+        return $ret;
+    }
+    
+    function xmltext() {
+        $ret = $this->innertext();
+        $ret = str_ireplace('<![CDATA[', '', $ret);
+        $ret = str_replace(']]>', '', $ret);
+        return $ret;
+    }
+
+    // build node's text with tag
+    function makeup() {
+        // text, comment, unknown
+        if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
+
+        $ret = '<'.$this->tag;
+        $i = -1;
+
+        foreach($this->attr as $key=>$val) {
+            ++$i;
+
+            // skip removed attribute
+            if ($val===null || $val===false)
+                continue;
+
+            $ret .= $this->_[HDOM_INFO_SPACE][$i][0];
+            //no value attr: nowrap, checked selected...
+            if ($val===true)
+                $ret .= $key;
+            else {
+                switch($this->_[HDOM_INFO_QUOTE][$i]) {
+                    case HDOM_QUOTE_DOUBLE: $quote = '"'; break;
+                    case HDOM_QUOTE_SINGLE: $quote = '\''; break;
+                    default: $quote = '';
+                }
+                $ret .= $key.$this->_[HDOM_INFO_SPACE][$i][1].'='.$this->_[HDOM_INFO_SPACE][$i][2].$quote.$val.$quote;
+            }
+        }
+        $ret = $this->dom->restore_noise($ret);
+        return $ret . $this->_[HDOM_INFO_ENDSPACE] . '>';
+    }
+
+    // find elements by css selector
+    function find($selector, $idx=null) {
+        $selectors = $this->parse_selector($selector);
+        if (($count=count($selectors))===0) return array();
+        $found_keys = array();
+
+        // find each selector
+        for ($c=0; $c<$count; ++$c) {
+            if (($levle=count($selectors[0]))===0) return array();
+            if (!isset($this->_[HDOM_INFO_BEGIN])) return array();
+
+            $head = array($this->_[HDOM_INFO_BEGIN]=>1);
+
+            // handle descendant selectors, no recursive!
+            for ($l=0; $l<$levle; ++$l) {
+                $ret = array();
+                foreach($head as $k=>$v) {
+                    $n = ($k===-1) ? $this->dom->root : $this->dom->nodes[$k];
+                    $n->seek($selectors[$c][$l], $ret);
+                }
+                $head = $ret;
+            }
+
+            foreach($head as $k=>$v) {
+                if (!isset($found_keys[$k]))
+                    $found_keys[$k] = 1;
+            }
+        }
+
+        // sort keys
+        ksort($found_keys);
+
+        $found = array();
+        foreach($found_keys as $k=>$v)
+            $found[] = $this->dom->nodes[$k];
+
+        // return nth-element or array
+        if (is_null($idx)) return $found;
+        else if ($idx<0) $idx = count($found) + $idx;
+        return (isset($found[$idx])) ? $found[$idx] : null;
+    }
+
+    // seek for given conditions
+    protected function seek($selector, &$ret) {
+        list($tag, $key, $val, $exp, $no_key) = $selector;
+
+        // xpath index
+        if ($tag && $key && is_numeric($key)) {
+            $count = 0;
+            foreach ($this->children as $c) {
+                if ($tag==='*' || $tag===$c->tag) {
+                    if (++$count==$key) {
+                        $ret[$c->_[HDOM_INFO_BEGIN]] = 1;
+                        return;
+                    }
+                }
+            } 
+            return;
+        }
+
+        $end = (!empty($this->_[HDOM_INFO_END])) ? $this->_[HDOM_INFO_END] : 0;
+        if ($end==0) {
+            $parent = $this->parent;
+            while (!isset($parent->_[HDOM_INFO_END]) && $parent!==null) {
+                $end -= 1;
+                $parent = $parent->parent;
+            }
+            $end += $parent->_[HDOM_INFO_END];
+        }
+
+        for($i=$this->_[HDOM_INFO_BEGIN]+1; $i<$end; ++$i) {
+            $node = $this->dom->nodes[$i];
+            $pass = true;
+
+            if ($tag==='*' && !$key) {
+                if (in_array($node, $this->children, true))
+                    $ret[$i] = 1;
+                continue;
+            }
+
+            // compare tag
+            if ($tag && $tag!=$node->tag && $tag!=='*') {$pass=false;}
+            // compare key
+            if ($pass && $key) {
+                if ($no_key) {
+                    if (isset($node->attr[$key])) $pass=false;
+                }
+                else if (!isset($node->attr[$key])) $pass=false;
+            }
+            // compare value
+            if ($pass && $key && $val  && $val!=='*') {
+                $check = $this->match($exp, $val, $node->attr[$key]);
+                // handle multiple class
+                if (!$check && strcasecmp($key, 'class')===0) {
+                    foreach(explode(' ',$node->attr[$key]) as $k) {
+                        $check = $this->match($exp, $val, $k);
+                        if ($check) break;
+                    }
+                }
+                if (!$check) $pass = false;
+            }
+            if ($pass) $ret[$i] = 1;
+            unset($node);
+        }
+    }
+
+    protected function match($exp, $pattern, $value) {
+        switch ($exp) {
+            case '=':
+                return ($value===$pattern);
+            case '!=':
+                return ($value!==$pattern);
+            case '^=':
+                return preg_match("/^".preg_quote($pattern,'/')."/", $value);
+            case '$=':
+                return preg_match("/".preg_quote($pattern,'/')."$/", $value);
+            case '*=':
+                if ($pattern[0]=='/')
+                    return preg_match($pattern, $value);
+                return preg_match("/".$pattern."/i", $value);
+        }
+        return false;
+    }
+
+    protected function parse_selector($selector_string) {
+        // pattern of CSS selectors, modified from mootools
+        $pattern = "/([\w-:\*]*)(?:\#([\w-]+)|\.([\w-]+))?(?:\[@?(!?[\w-]+)(?:([!*^$]?=)[\"']?(.*?)[\"']?)?\])?([\/, ]+)/is";
+        preg_match_all($pattern, trim($selector_string).' ', $matches, PREG_SET_ORDER);
+        $selectors = array();
+        $result = array();
+        //print_r($matches);
+
+        foreach ($matches as $m) {
+            $m[0] = trim($m[0]);
+            if ($m[0]==='' || $m[0]==='/' || $m[0]==='//') continue;
+            // for borwser grnreated xpath
+            if ($m[1]==='tbody') continue;
+
+            list($tag, $key, $val, $exp, $no_key) = array($m[1], null, null, '=', false);
+            if(!empty($m[2])) {$key='id'; $val=$m[2];}
+            if(!empty($m[3])) {$key='class'; $val=$m[3];}
+            if(!empty($m[4])) {$key=$m[4];}
+            if(!empty($m[5])) {$exp=$m[5];}
+            if(!empty($m[6])) {$val=$m[6];}
+
+            // convert to lowercase
+            if ($this->dom->lowercase) {$tag=strtolower($tag); $key=strtolower($key);}
+            //elements that do NOT have the specified attribute
+            if (isset($key[0]) && $key[0]==='!') {$key=substr($key, 1); $no_key=true;}
+
+            $result[] = array($tag, $key, $val, $exp, $no_key);
+            if (trim($m[7])===',') {
+                $selectors[] = $result;
+                $result = array();
+            }
+        }
+        if (count($result)>0)
+            $selectors[] = $result;
+        return $selectors;
+    }
+
+    function __get($name) {
+        if (isset($this->attr[$name])) return $this->attr[$name];
+        switch($name) {
+            case 'outertext': return $this->outertext();
+            case 'innertext': return $this->innertext();
+            case 'plaintext': return $this->text();
+            case 'xmltext': return $this->xmltext();
+            default: return array_key_exists($name, $this->attr);
+        }
+    }
+
+    function __set($name, $value) {
+        switch($name) {
+            case 'outertext': return $this->_[HDOM_INFO_OUTER] = $value;
+            case 'innertext':
+                if (isset($this->_[HDOM_INFO_TEXT])) return $this->_[HDOM_INFO_TEXT] = $value;
+                return $this->_[HDOM_INFO_INNER] = $value;
+        }
+        if (!isset($this->attr[$name])) {
+            $this->_[HDOM_INFO_SPACE][] = array(' ', '', ''); 
+            $this->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE;
+        }
+        $this->attr[$name] = $value;
+    }
+
+    function __isset($name) {
+        switch($name) {
+            case 'outertext': return true;
+            case 'innertext': return true;
+            case 'plaintext': return true;
+        }
+        //no value attr: nowrap, checked selected...
+        return (array_key_exists($name, $this->attr)) ? true : isset($this->attr[$name]);
+    }
+
+    function __unset($name) {
+        if (isset($this->attr[$name]))
+            unset($this->attr[$name]);
+    }
+
+    // camel naming conventions
+    function getAllAttributes() {return $this->attr;}
+    function getAttribute($name) {return $this->__get($name);}
+    function setAttribute($name, $value) {$this->__set($name, $value);}
+    function hasAttribute($name) {return $this->__isset($name);}
+    function removeAttribute($name) {$this->__set($name, null);}
+    function getElementById($id) {return $this->find("#$id", 0);}
+    function getElementsById($id, $idx=null) {return $this->find("#$id", $idx);}
+    function getElementByTagName($name) {return $this->find($name, 0);}
+    function getElementsByTagName($name, $idx=null) {return $this->find($name, $idx);}
+    function parentNode() {return $this->parent();}
+    function childNodes($idx=-1) {return $this->children($idx);}
+    function firstChild() {return $this->first_child();}
+    function lastChild() {return $this->last_child();}
+    function nextSibling() {return $this->next_sibling();}
+    function previousSibling() {return $this->prev_sibling();}
+}
+
+// simple html dom parser
+// -----------------------------------------------------------------------------
+class simple_html_dom {
+    public $root = null;
+    public $nodes = array();
+    public $callback = null;
+    public $lowercase = false;
+    protected $pos;
+    protected $doc;
+    protected $char;
+    protected $size;
+    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 = ' >';
+    // 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);
+    protected $optional_closing_tags = array(
+        'tr'=>array('tr'=>1, 'td'=>1, 'th'=>1),
+        'th'=>array('th'=>1),
+        'td'=>array('td'=>1),
+        'li'=>array('li'=>1),
+        'dt'=>array('dt'=>1, 'dd'=>1),
+        'dd'=>array('dd'=>1, 'dt'=>1),
+        'dl'=>array('dd'=>1, 'dt'=>1),
+        'p'=>array('p'=>1),
+        'nobr'=>array('nobr'=>1),
+    );
+
+    function __construct($str=null) {
+        if ($str) {
+            if (preg_match("/^http:\/\//i",$str) || is_file($str)) 
+                $this->load_file($str); 
+            else
+                $this->load($str);
+        }
+    }
+
+    function __destruct() {
+        $this->clear();
+    }
+
+    // load html from string
+    function load($str, $lowercase=true) {
+        // prepare
+        $this->prepare($str, $lowercase);
+        // strip out comments
+        $this->remove_noise("'<!--(.*?)-->'is");
+        // strip out cdata
+        $this->remove_noise("'<!\[CDATA\[(.*?)\]\]>'is", true);
+        // 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 <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 preformatted tags
+        $this->remove_noise("'<\s*(?:code)[^>]*>(.*?)<\s*/\s*(?:code)\s*>'is");
+        // strip out server side scripts
+        $this->remove_noise("'(<\?)(.*?)(\?>)'s", true);
+        // strip smarty scripts
+        $this->remove_noise("'(\{\w)(.*?)(\})'s", true);
+
+        // parsing
+        while ($this->parse());
+        // end
+        $this->root->_[HDOM_INFO_END] = $this->cursor;
+    }
+
+    // load html from file
+    function load_file() {
+        $args = func_get_args();
+        $this->load(call_user_func_array('file_get_contents', $args), true);
+    }
+
+    // set callback function
+    function set_callback($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);
+        return $ret;
+    }
+
+    // find dom node by css selector
+    function find($selector, $idx=null) {
+        return $this->root->find($selector, $idx);
+    }
+
+    // clean up memory due to php5 circular references memory leak...
+    function clear() {
+        foreach($this->nodes 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) {
+        $this->clear();
+        $this->doc = $str;
+        $this->pos = 0;
+        $this->cursor = 1;
+        $this->noise = array();
+        $this->nodes = array();
+        $this->lowercase = $lowercase;
+        $this->root = new simple_html_dom_node($this);
+        $this->root->tag = 'root';
+        $this->root->_[HDOM_INFO_BEGIN] = -1;
+        $this->root->nodetype = HDOM_TYPE_ROOT;
+        $this->parent = $this->root;
+        // set the length of content
+        $this->size = strlen($str);
+        if ($this->size>0) $this->char = $this->doc[0];
+    }
+
+    // parse html content
+    protected function parse() {
+        if (($s = $this->copy_until_char('<'))==='')
+            return $this->read_tag();
+
+        // text
+        $node = new simple_html_dom_node($this);
+        ++$this->cursor;
+        $node->_[HDOM_INFO_TEXT] = $s;
+        $this->link_nodes($node, false);
+        return true;
+    }
+
+    // read tag info
+    protected function read_tag() {
+        if ($this->char!=='<') {
+            $this->root->_[HDOM_INFO_END] = $this->cursor;
+            return false;
+        }
+        $begin_tag_pos = $this->pos;
+        $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+
+        // end tag
+        if ($this->char==='/') {
+            $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+            $this->skip($this->token_blank_t);
+            $tag = $this->copy_until_char('>');
+
+            // skip attributes in end tag
+            if (($pos = strpos($tag, ' '))!==false)
+                $tag = substr($tag, 0, $pos);
+
+            $parent_lower = strtolower($this->parent->tag);
+            $tag_lower = strtolower($tag);
+
+            if ($parent_lower!==$tag_lower) {
+                if (isset($this->optional_closing_tags[$parent_lower]) && isset($this->block_tags[$tag_lower])) {
+                    $this->parent->_[HDOM_INFO_END] = 0;
+                    $org_parent = $this->parent;
+
+                    while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower)
+                        $this->parent = $this->parent->parent;
+
+                    if (strtolower($this->parent->tag)!==$tag_lower) {
+                        $this->parent = $org_parent; // restore origonal parent
+                        if ($this->parent->parent) $this->parent = $this->parent->parent;
+                        $this->parent->_[HDOM_INFO_END] = $this->cursor;
+                        return $this->as_text_node($tag);
+                    }
+                }
+                else if (($this->parent->parent) && isset($this->block_tags[$tag_lower])) {
+                    $this->parent->_[HDOM_INFO_END] = 0;
+                    $org_parent = $this->parent;
+
+                    while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower)
+                        $this->parent = $this->parent->parent;
+
+                    if (strtolower($this->parent->tag)!==$tag_lower) {
+                        $this->parent = $org_parent; // restore origonal parent
+                        $this->parent->_[HDOM_INFO_END] = $this->cursor;
+                        return $this->as_text_node($tag);
+                    }
+                }
+                else if (($this->parent->parent) && strtolower($this->parent->parent->tag)===$tag_lower) {
+                    $this->parent->_[HDOM_INFO_END] = 0;
+                    $this->parent = $this->parent->parent;
+                }
+                else
+                    return $this->as_text_node($tag);
+            }
+
+            $this->parent->_[HDOM_INFO_END] = $this->cursor;
+            if ($this->parent->parent) $this->parent = $this->parent->parent;
+
+            $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+            return true;
+        }
+
+        $node = new simple_html_dom_node($this);
+        $node->_[HDOM_INFO_BEGIN] = $this->cursor;
+        ++$this->cursor;
+        $tag = $this->copy_until($this->token_slash);
+
+        // doctype, cdata & comments...
+        if (isset($tag[0]) && $tag[0]==='!') {
+            $node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until_char('>');
+
+            if (isset($tag[2]) && $tag[1]==='-' && $tag[2]==='-') {
+                $node->nodetype = HDOM_TYPE_COMMENT;
+                $node->tag = 'comment';
+            } else {
+                $node->nodetype = HDOM_TYPE_UNKNOWN;
+                $node->tag = 'unknown';
+            }
+
+            if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>';
+            $this->link_nodes($node, true);
+            $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+            return true;
+        }
+
+        // text
+        if ($pos=strpos($tag, '<')!==false) {
+            $tag = '<' . substr($tag, 0, -1);
+            $node->_[HDOM_INFO_TEXT] = $tag;
+            $this->link_nodes($node, false);
+            $this->char = $this->doc[--$this->pos]; // prev
+            return true;
+        }
+
+        if (!preg_match("/^[\w-:]+$/", $tag)) {
+            $node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until('<>');
+            if ($this->char==='<') {
+                $this->link_nodes($node, false);
+                return true;
+            }
+
+            if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>';
+            $this->link_nodes($node, false);
+            $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+            return true;
+        }
+
+        // begin tag
+        $node->nodetype = HDOM_TYPE_ELEMENT;
+        $tag_lower = strtolower($tag);
+        $node->tag = ($this->lowercase) ? $tag_lower : $tag;
+
+        // handle optional closing tags
+        if (isset($this->optional_closing_tags[$tag_lower]) ) {
+            while (isset($this->optional_closing_tags[$tag_lower][strtolower($this->parent->tag)])) {
+                $this->parent->_[HDOM_INFO_END] = 0;
+                $this->parent = $this->parent->parent;
+            }
+            $node->parent = $this->parent;
+        }
+
+        $guard = 0; // prevent infinity loop
+        $space = array($this->copy_skip($this->token_blank), '', '');
+
+        // attributes
+        do {
+            if ($this->char!==null && $space[0]==='') break;
+            $name = $this->copy_until($this->token_equal);
+            if($guard===$this->pos) {
+                $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+                continue;
+            }
+            $guard = $this->pos;
+
+            // handle endless '<'
+            if($this->pos>=$this->size-1 && $this->char!=='>') {
+                $node->nodetype = HDOM_TYPE_TEXT;
+                $node->_[HDOM_INFO_END] = 0;
+                $node->_[HDOM_INFO_TEXT] = '<'.$tag . $space[0] . $name;
+                $node->tag = 'text';
+                $this->link_nodes($node, false);
+                return true;
+            }
+
+            // handle mismatch '<'
+            if($this->doc[$this->pos-1]=='<') {
+                $node->nodetype = HDOM_TYPE_TEXT;
+                $node->tag = 'text';
+                $node->attr = array();
+                $node->_[HDOM_INFO_END] = 0;
+                $node->_[HDOM_INFO_TEXT] = substr($this->doc, $begin_tag_pos, $this->pos-$begin_tag_pos-1);
+                $this->pos -= 2;
+                $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+                $this->link_nodes($node, false);
+                return true;
+            }
+
+            if ($name!=='/' && $name!=='') {
+                $space[1] = $this->copy_skip($this->token_blank);
+                $name = $this->restore_noise($name);
+                if ($this->lowercase) $name = strtolower($name);
+                if ($this->char==='=') {
+                    $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+                    $this->parse_attr($node, $name, $space);
+                }
+                else {
+                    //no value attr: nowrap, checked selected...
+                    $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO;
+                    $node->attr[$name] = true;
+                    if ($this->char!='>') $this->char = $this->doc[--$this->pos]; // prev
+                }
+                $node->_[HDOM_INFO_SPACE][] = $space;
+                $space = array($this->copy_skip($this->token_blank), '', '');
+            }
+            else
+                break;
+        } while($this->char!=='>' && $this->char!=='/');
+
+        $this->link_nodes($node, true);
+        $node->_[HDOM_INFO_ENDSPACE] = $space[0];
+
+        // check self closing
+        if ($this->copy_until_char_escape('>')==='/') {
+            $node->_[HDOM_INFO_ENDSPACE] .= '/';
+            $node->_[HDOM_INFO_END] = 0;
+        }
+        else {
+            // reset parent
+            if (!isset($this->self_closing_tags[strtolower($node->tag)])) $this->parent = $node;
+        }
+        $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+        return true;
+    }
+
+    // parse attributes
+    protected function parse_attr($node, $name, &$space) {
+        $space[2] = $this->copy_skip($this->token_blank);
+        switch($this->char) {
+            case '"':
+                $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE;
+                $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+                $node->attr[$name] = $this->restore_noise($this->copy_until_char_escape('"'));
+                $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+                break;
+            case '\'':
+                $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_SINGLE;
+                $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+                $node->attr[$name] = $this->restore_noise($this->copy_until_char_escape('\''));
+                $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+                break;
+            default:
+                $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO;
+                $node->attr[$name] = $this->restore_noise($this->copy_until($this->token_attr));
+        }
+    }
+
+    // link node's parent
+    protected function link_nodes(&$node, $is_child) {
+        $node->parent = $this->parent;
+        $this->parent->nodes[] = $node;
+        if ($is_child)
+            $this->parent->children[] = $node;
+    }
+
+    // as a text node
+    protected function as_text_node($tag) {
+        $node = new simple_html_dom_node($this);
+        ++$this->cursor;
+        $node->_[HDOM_INFO_TEXT] = '</' . $tag . '>';
+        $this->link_nodes($node, false);
+        $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+        return true;
+    }
+
+    protected function skip($chars) {
+        $this->pos += strspn($this->doc, $chars, $this->pos);
+        $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+    }
+
+    protected function copy_skip($chars) {
+        $pos = $this->pos;
+        $len = strspn($this->doc, $chars, $pos);
+        $this->pos += $len;
+        $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+        if ($len===0) return '';
+        return substr($this->doc, $pos, $len);
+    }
+
+    protected function copy_until($chars) {
+        $pos = $this->pos;
+        $len = strcspn($this->doc, $chars, $pos);
+        $this->pos += $len;
+        $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
+        return substr($this->doc, $pos, $len);
+    }
+
+    protected function copy_until_char($char) {
+        if ($this->char===null) return '';
+
+        if (($pos = strpos($this->doc, $char, $this->pos))===false) {
+            $ret = substr($this->doc, $this->pos, $this->size-$this->pos);
+            $this->char = null;
+            $this->pos = $this->size;
+            return $ret;
+        }
+
+        if ($pos===$this->pos) return '';
+        $pos_old = $this->pos;
+        $this->char = $this->doc[$pos];
+        $this->pos = $pos;
+        return substr($this->doc, $pos_old, $pos-$pos_old);
+    }
+
+    protected function copy_until_char_escape($char) {
+        if ($this->char===null) return '';
+
+        $start = $this->pos;
+        while(1) {
+            if (($pos = strpos($this->doc, $char, $start))===false) {
+                $ret = substr($this->doc, $this->pos, $this->size-$this->pos);
+                $this->char = null;
+                $this->pos = $this->size;
+                return $ret;
+            }
+
+            if ($pos===$this->pos) return '';
+
+            if ($this->doc[$pos-1]==='\\') {
+                $start = $pos+1;
+                continue;
+            }
+
+            $pos_old = $this->pos;
+            $this->char = $this->doc[$pos];
+            $this->pos = $pos;
+            return substr($this->doc, $pos_old, $pos-$pos_old);
+        }
+    }
+
+    // remove noise from html content
+    protected function remove_noise($pattern, $remove_tag=false) {
+        $count = preg_match_all($pattern, $this->doc, $matches, PREG_SET_ORDER|PREG_OFFSET_CAPTURE);
+
+        for ($i=$count-1; $i>-1; --$i) {
+            $key = '___noise___'.sprintf('% 3d', count($this->noise)+100);
+            $idx = ($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) {
+        while(($pos=strpos($text, '___noise___'))!==false) {
+            $key = '___noise___'.$text[$pos+11].$text[$pos+12].$text[$pos+13];
+            if (isset($this->noise[$key]))
+                $text = substr($text, 0, $pos).$this->noise[$key].substr($text, $pos+14);
+        }
+        return $text;
+    }
+
+    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 $this->root->text();
+        }
+    }
+
+    // camel naming conventions
+    function childNodes($idx=-1) {return $this->root->childNodes($idx);}
+    function firstChild() {return $this->root->first_child();}
+    function lastChild() {return $this->root->last_child();}
+    function getElementById($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(call_user_func_array('file_get_contents', $args), true);}
+}
+?>
\ No newline at end of file