gitphp 0.2.9.1 :: busui.git/commitdiff

Add myway card balance/transaction API

2 files changed: (show all)
myway_api.json.php (new)
simple_html_dom.php (new)

file:b/myway_api.json.php (new)

	<?php
	function cleanString($subject)
	{
	$subject = str_replace(" ", " ", $subject);
	$subject = str_replace("&", "&", $subject);
	$subject = preg_replace('/[^\r\n\t\x20-\x7E\xA0-\xFF]/', '', $subject);
	$subject = str_replace(" ", " ", $subject);
	return trim($subject);
	}
	$return = Array();
	/*if (file_exists("mywayresponse.txt")) {
	@$fh = fopen("mywayresponse.txt", 'r');
	if ($fh) {
	$pageHTML = fread($fh, filesize("mywayresponse.txt"));
	fclose($fh);
	}
	}*/
	//set POST variables
	$url = 'https://www.action.act.gov.au/ARTS/use_Funcs.asp';
	$field_mapping = Array(
	"card_number" => "SRNO",
	"DOBmonth" => "month",
	"DOBday" => "day",
	"DOByear" => "year",
	"secret_answer" => "pwrd",
	"button" => "button"
	);
	foreach (Array(
	"card_number",
	"DOBday",
	"DOBmonth",
	"DOByear"
	) as $field_name) {
	if (isset($_REQUEST[$field_name])) {
	$fields[$field_name] = filter_var($_REQUEST[$field_name], FILTER_SANITIZE_NUMBER_INT);
	}
	else {
	$return["error"][] = $field_name. " parameter invalid or unspecified";
	}
	}
	if (isset($_REQUEST['secret_answer'])) {
	$fields['secret_answer'] = filter_var($_REQUEST['secret_answer'], FILTER_SANITIZE_STRING, Array(
	FILTER_FLAG_NO_ENCODE_QUOTES,
	FILTER_FLAG_STRIP_HIGH,
	FILTER_FLAG_STRIP_LOW
	));
	}
	else {
	$return["error"][] = "secret_answer parameter invalid or unspecified";
	}
	$fields['button'] = 'Submit';
	$fields_string = "";
	//url-ify the data for the POST
	foreach ($fields as $key => $value) {
	if (sizeof($value) === 0) $return['error'][] = $key . " parameter invalid or unspecified";
	$fields_string.= $field_mapping[$key] . '=' . $value . '&';
	}
	$fields_string = rtrim($fields_string, '&');
	if (!isset($return['error'])) {
	//open connection
	$ch = curl_init();
	//set the url, number of POST vars, POST data
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_POST, count($fields));
	curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_HEADER, 0);
	curl_setopt($ch, CURLOPT_TIMEOUT, 30);
	//execute post
	$pageHTML = curl_exec($ch);
	if (curl_errno($ch)) $return["error"][] = "Network error " . curl_errno($ch) . " " . curl_error($ch) . " " . $url . $fields_string;
	//close connection
	curl_close($ch);
	}
	if (!isset($return['error'])) {
	include_once ('simple_html_dom.php');
	$page = str_get_html($pageHTML);
	$pageAlerts = $page->find(".smartCardAlert");
	if (sizeof($pageAlerts) > 0) {
	$return['error'][] = $pageAlerts[0]->plaintext;
	}
	if (!isset($return['error'])) {
	$tableNum = 0;
	$tableName = Array(
	1 => "myway_carddetails",
	2 => "myway_transactions"
	);
	foreach ($page->find("table") as $table) {
	$tableNum++;
	$tableColumns = Array();
	$tableColumnNum = 0;
	foreach ($table->find("th") as $th) {
	$tableColumns[$tableColumnNum] = cleanString($th->plaintext);
	$tableColumnNum++;
	}
	$tableRowNum = 0;
	foreach ($table->find("tr") as $tr) {
	$tableColumnNum = 0;
	foreach ($tr->find("td") as $td) {
	$return[$tableName[$tableNum]][$tableRowNum][$tableColumns[$tableColumnNum]] = cleanString($td->plaintext);
	$tableColumnNum++;
	}
	$tableRowNum++;
	}
	}
	}
	}
	if (sizeof($return) == 0) {
	$return['error'][] = "No data extracted from MyWay website - API may be out of date";
	print $pageHTML;
	}
	header('Content-Type: text/javascript; charset=utf8');
	// header('Access-Control-Allow-Origin: http://bus.lambdacomplex.org/');
	header('Access-Control-Max-Age: 3628800');
	header('Access-Control-Allow-Methods: GET, POST, PUT, DELETE');
	if (isset($_GET['callback'])) {
	$json = '(' . json_encode($return) . ');'; //must wrap in parens and end with semicolon
	print_r($_GET['callback'] . $json); //callback is prepended for json-p

	}
	else echo json_encode($return);
	?>

file:b/simple_html_dom.php (new)

	<?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("'<\sstyle[^>][^/]>(.?)<\s/\sstyle\s>'is");
	$this->remove_noise("'<\sstyle\s>(.?)<\s/\sstyle\s>'is");
	// strip out <script> tags
	$this->remove_noise("'<\sscript[^>][^/]>(.?)<\s/\sscript\s>'is");
	$this->remove_noise("'<\sscript\s>(.?)<\s/\sscript\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);}
	}
	?>