Psyduck - 可達鴨 之 鴨力山大
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<?php
/**
* Website: http://sourceforge.net/projects/simplehtmldom/
* Additional projects: http://sourceforge.net/projects/debugobject/
* 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)
*
* all affected sections have comments starting with "PaperG"
*
* Paperg - Added case insensitive testing of the value of the selector.
*
* Paperg - Added tag_start for the starting index of tags - NOTE: This works
* but not accurately. 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, it will almost always be smaller by some
* amount. 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. But for most purposes, it's a
* really good estimation.
*
* Paperg - Added the forceTagsClosed to the dom constructor. Forcing tags
* closed is great for malformed html, but it CAN lead to parsing errors.
*
* Allow the user to tell us how much they trust the html.
*
* 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. This allows for us to find tags based on the text they
* contain.
*
* Create find_ancestor_tag to see if a tag is - at any level - inside of
* another specific tag.
*
* Paperg: added parse_charset so that we know about the character set of
* the source document. 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 last transfer or curl_exec, and
* we will parse that and use it in preference to any other method of charset
* detection.
*
* Found infinite loop in the case of broken html in restore_noise. Rewrote to
* protect from that.
*
* PaperG (John Schlick) Added get_display_size for "IMG" tags.
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @author S.C. Chen <me578022@gmail.com>
* @author John Schlick
* @author Rus Carroll
* @version Rev. 1.8.1 (247)
* @package PlaceLocalInclude
* @subpackage simple_html_dom
*/
/**
* All of the Defines for the classes below.
* @author S.C. Chen <me578022@gmail.com>
*/
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);
/** The default target charset */
defined('DEFAULT_TARGET_CHARSET') || define('DEFAULT_TARGET_CHARSET', 'UTF-8');
/** The default <br> text used instead of <br> tags when returning text */
defined('DEFAULT_BR_TEXT') || define('DEFAULT_BR_TEXT', "\r\n");
/** The default <span> text used instead of <span> tags when returning text */
defined('DEFAULT_SPAN_TEXT') || define('DEFAULT_SPAN_TEXT', ' ');
/** The maximum file size the parser should load */
defined('MAX_FILE_SIZE') || define('MAX_FILE_SIZE', 600000);
/** Contents between curly braces "{" and "}" are interpreted as text */
define('HDOM_SMARTY_AS_TEXT', 1);
// helper functions
// -----------------------------------------------------------------------------
// get html dom from file
// $maxlen is defined in the code as PHP_STREAM_COPY_ALL which is defined as -1.
function file_get_html(
$url,
$use_include_path = false,
$context = null,
$offset = 0,
$maxLen = -1,
$lowercase = true,
$forceTagsClosed = true,
$target_charset = DEFAULT_TARGET_CHARSET,
$stripRN = true,
$defaultBRText = DEFAULT_BR_TEXT,
$defaultSpanText = DEFAULT_SPAN_TEXT)
{
// Ensure maximum length is greater than zero
if($maxLen <= 0) { $maxLen = MAX_FILE_SIZE; }
// We DO force the tags to be terminated.
$dom = new simple_html_dom(
null,
$lowercase,
$forceTagsClosed,
$target_charset,
$stripRN,
$defaultBRText,
$defaultSpanText);
/**
* For sourceforge users: uncomment the next line and comment the
* retrieve_url_contents line 2 lines down if it is not already done.
*/
$contents = file_get_contents(
$url,
$use_include_path,
$context,
$offset,
$maxLen);
// Paperg - use our own mechanism for getting the contents as we want to
// control the timeout.
// $contents = retrieve_url_contents($url);
if (empty($contents) || strlen($contents) > $maxLen) { return false; }
// The second parameter can force the selectors to all be lowercase.
$dom->load($contents, $lowercase, $stripRN);
return $dom;
}
// get html dom from string
function str_get_html(
$str,
$lowercase = true,
$forceTagsClosed = true,
$target_charset = DEFAULT_TARGET_CHARSET,
$stripRN = true,
$defaultBRText = DEFAULT_BR_TEXT,
$defaultSpanText = DEFAULT_SPAN_TEXT)
{
$dom = new simple_html_dom(
null,
$lowercase,
$forceTagsClosed,
$target_charset,
$stripRN,
$defaultBRText,
$defaultSpanText);
if (empty($str) || strlen($str) > MAX_FILE_SIZE) {
$dom->clear();
return false;
}
$dom->load($str, $lowercase, $stripRN);
return $dom;
}
// dump html dom tree
function dump_html_tree($node, $show_attr = true, $deep = 0)
{
$node->dump($node);
}
/**
* simple html dom node
* PaperG - added ability for "find" routine to lowercase the value of the
* selector.
*
* PaperG - added $tag_start to track the start position of the tag in the total
* byte index
*
* @package PlaceLocalInclude
*/
class simple_html_dom_node
{
/**
* Node type
*
* Default is {@see HDOM_TYPE_TEXT}
*
* @var int
*/
public $nodetype = HDOM_TYPE_TEXT;
/**
* Tag name
*
* Default is 'text'
*
* @var string
*/
public $tag = 'text';
/**
* List of attributes
*
* @var array
*/
public $attr = array();
/**
* List of child node objects
*
* @var array
*/
public $children = array();
public $nodes = array();
/**
* The parent node object
*
* @var object|null
*/
public $parent = null;
// The "info" array - see HDOM_INFO_... for what each element contains.
public $_ = array();
/**
* Start position of the tag in the document
*
* @var int
*/
public $tag_start = 0;
/**
* The DOM object
*
* @var object|null
*/
private $dom = null;
/**
* Construct new node object
*
* Adds itself to the list of DOM Nodes {@see simple_html_dom::$nodes}
*/
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, $deep = 0)
{
$lead = str_repeat(' ', $deep);
echo $lead . $this->tag;
if ($show_attr && count($this->attr) > 0) {
echo '(';
foreach ($this->attr as $k => $v) {
echo "[$k]=>\"" . $this->$k . '", ';
}
echo ')';
}
echo "\n";
if ($this->nodes) {
foreach ($this->nodes as $c) {
$c->dump($show_attr, $deep + 1);
}
}
}
// Debugging function to dump a single dom node with a bunch of information about it.
function dump_node($echo = true)
{
$string = $this->tag;
if (count($this->attr) > 0) {
$string .= '(';
foreach ($this->attr as $k => $v) {
$string .= "[$k]=>\"" . $this->$k . '", ';
}
$string .= ')';
}
if (count($this->_) > 0) {
$string .= ' $_ (';
foreach ($this->_ as $k => $v) {
if (is_array($v)) {
$string .= "[$k]=>(";
foreach ($v as $k2 => $v2) {
$string .= "[$k2]=>\"" . $v2 . '", ';
}
$string .= ')';
} else {
$string .= "[$k]=>\"" . $v . '", ';
}
}
$string .= ')';
}
if (isset($this->text)) {
$string .= ' text: (' . $this->text . ')';
}
$string .= " HDOM_INNER_INFO: '";
if (isset($node->_[HDOM_INFO_INNER])) {
$string .= $node->_[HDOM_INFO_INNER] . "'";
} else {
$string .= ' NULL ';
}
$string .= ' children: ' . count($this->children);
$string .= ' nodes: ' . count($this->nodes);
$string .= ' tag_start: ' . $this->tag_start;
$string .= "\n";
if ($echo) {
echo $string;
return;
} else {
return $string;
}
}
/**
* Return or set parent node
*
* @param object|null $parent (optional) The parent node, `null` to return
* the current parent node.
* @return object|null The parent node
*/
function parent($parent = null)
{
// I am SURE that this doesn't work properly.
// It fails to unset the current node from it's current parents nodes or
// children list first.
if ($parent !== null) {
$this->parent = $parent;
$this->parent->nodes[] = $this;
$this->parent->children[] = $this;
}
return $this->parent;
}
/**
* @return bool True if the node has at least one child node
*/
function has_child()
{
return !empty($this->children);
}
/**
* Get child node at specified index
*
* @param int $idx The index of the child node to return, `-1` to return all
* child nodes.
* @return object|array|null The child node at the specified index, all child
* nodes or null if the index is invalid.
*/
function children($idx = -1)
{
if ($idx === -1) {
return $this->children;
}
if (isset($this->children[$idx])) {
return $this->children[$idx];
}
return null;
}
/**
* Get first child node
*
* @return object|null The first child node or null if the current node has
* no child nodes.
*
* @todo Use `empty()` instead of `count()` to improve performance on large
* arrays.
*/
function first_child()
{
if (count($this->children) > 0) {
return $this->children[0];
}
return null;
}
/**
* Get last child node
*
* @return object|null The last child node or null if the current node has
* no child nodes.
*
* @todo Use `end()` to slightly improve performance on large arrays.
*/
function last_child()
{
if (($count = count($this->children)) > 0) {
return $this->children[$count - 1];
}
return null;
}
/**
* Get next sibling node
*
* @return object|null The sibling node or null if the current node has no
* sibling nodes.
*/
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];
}
/**
* Get previous sibling node
*
* @return object|null The sibling node or null if the current node has no
* sibling nodes.
*/
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];
}
/**
* Traverse ancestors to the first matching tag.
*
* @param string $tag Tag to find
* @return object|null First matching node in the DOM tree or null if no
* match was found.
*
* @todo Null is returned implicitly by calling ->parent on the root node.
* This behaviour could change at any time, rendering this function invalid.
*/
function find_ancestor_tag($tag)
{
global $debug_object;
if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
// Start by including ourselves in the comparison.
$returnDom = $this;
while (!is_null($returnDom)) {
if (is_object($debug_object)) {
$debug_object->debug_log(2, 'Current tag is: ' . $returnDom->tag);
}
if ($returnDom->tag == $tag) {
break;
}
$returnDom = $returnDom->parent;
}
return $returnDom;
}
/**
* Get node's inner text (everything inside the opening and closing tags)
*
* @return string
*/
function innertext()
{
if (isset($this->_[HDOM_INFO_INNER])) {
return $this->_[HDOM_INFO_INNER];
}
if (isset($this->_[HDOM_INFO_TEXT])) {
return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
}
$ret = '';
foreach ($this->nodes as $n) {
$ret .= $n->outertext();
}
return $ret;
}
/**
* Get node's outer text (everything including the opening and closing tags)
*
* @return string
*/
function outertext()
{
global $debug_object;
if (is_object($debug_object)) {
$text = '';
if ($this->tag === 'text') {
if (!empty($this->text)) {
$text = ' with text: ' . $this->text;
}
}
$debug_object->debug_log(1, 'Innertext of tag: ' . $this->tag . $text);
}
if ($this->tag === 'root') return $this->innertext();
// trigger callback
if ($this->dom && $this->dom->callback !== null) {
call_user_func_array($this->dom->callback, array($this));
}
if (isset($this->_[HDOM_INFO_OUTER])) {
return $this->_[HDOM_INFO_OUTER];
}
if (isset($this->_[HDOM_INFO_TEXT])) {
return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
}
// render begin tag
if ($this->dom && $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]) {
$ret = $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]->makeup();
} else {
$ret = '';
}
// render inner text
if (isset($this->_[HDOM_INFO_INNER])) {
// If it's a br tag... don't return the HDOM_INNER_INFO that we
// may or may not have added.
if ($this->tag !== 'br') {
$ret .= $this->_[HDOM_INFO_INNER];
}
} else {
if ($this->nodes) {
foreach ($this->nodes as $n) {
$ret .= $this->convert_text($n->outertext());
}
}
}
// render end tag
if (isset($this->_[HDOM_INFO_END]) && $this->_[HDOM_INFO_END] != 0) {
$ret .= '</' . $this->tag . '>';
}
return $ret;
}
/**
* Get node's plain text (everything excluding all tags)
*
* @return string
*/
function text()
{
if (isset($this->_[HDOM_INFO_INNER])) {
return $this->_[HDOM_INFO_INNER];
}
switch ($this->nodetype) {
case HDOM_TYPE_TEXT: return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
case HDOM_TYPE_COMMENT: return '';
case HDOM_TYPE_UNKNOWN: return '';
}
if (strcasecmp($this->tag, 'script') === 0) { return ''; }
if (strcasecmp($this->tag, 'style') === 0) { return ''; }
$ret = '';
// In rare cases, (always node type 1 or HDOM_TYPE_ELEMENT - observed
// for some span tags, and some p tags) $this->nodes is set to NULL.
// NOTE: This indicates that there is a problem where it's set to NULL
// without a clear happening.
// WHY is this happening?
if (!is_null($this->nodes)) {
foreach ($this->nodes as $n) {
// Start paragraph after a blank line
if ($n->tag === 'p') {
$ret .= "\n\n";
}
$ret .= $this->convert_text($n->text());
// If this node is a span... add a space at the end of it so
// multiple spans don't run into each other. This is plaintext
// after all.
if ($n->tag === 'span') {
$ret .= $this->dom->default_span_text;
}
}
}
return trim($ret);
}
/**
* Get node's xml text (inner text as a CDATA section)
*
* @return string
*/
function xmltext()
{
$ret = $this->innertext();
$ret = str_ireplace('<![CDATA[', '', $ret);
$ret = str_replace(']]>', '', $ret);
return $ret;
}
// build node's text with tag
function makeup()
{
// text, comment, unknown
if (isset($this->_[HDOM_INFO_TEXT])) {
return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
}
$ret = '<' . $this->tag;
$i = -1;
foreach ($this->attr as $key => $val) {
++$i;
// skip removed attribute
if ($val === null || $val === false) { continue; }
$ret .= $this->_[HDOM_INFO_SPACE][$i][0];
//no value attr: nowrap, checked selected...
if ($val === true) {
$ret .= $key;
} else {
switch ($this->_[HDOM_INFO_QUOTE][$i])
{
case HDOM_QUOTE_DOUBLE: $quote = '"'; break;
case HDOM_QUOTE_SINGLE: $quote = '\''; break;
default: $quote = '';
}
$ret .= $key
. $this->_[HDOM_INFO_SPACE][$i][1]
. '='
. $this->_[HDOM_INFO_SPACE][$i][2]
. $quote
. $val
. $quote;
}
}
$ret = $this->dom->restore_noise($ret);
return $ret . $this->_[HDOM_INFO_ENDSPACE] . '>';
}
/**
* Find elements by CSS selector
*
* @param string $selector The CSS selector
* @param int|null $idx Index of element to return form the list of matching
* elements (default: `null` = disabled).
* @param bool $lowercase Matches tag names case insensitive (lowercase) if
* enabled (default: `false`)
* @return array|object|null A list of elements matching the specified CSS
* selector or a single element if $idx is specified or null if no element
* was found.
*/
function find($selector, $idx = null, $lowercase = false)
{
$selectors = $this->parse_selector($selector);
if (($count = count($selectors)) === 0) { return array(); }
$found_keys = array();
// find each selector
for ($c = 0; $c < $count; ++$c) {
// The change on the below line was documented on the sourceforge
// code tracker id 2788009
// used to be: if (($levle=count($selectors[0]))===0) return array();
if (($levle = count($selectors[$c])) === 0) { return array(); }
if (!isset($this->_[HDOM_INFO_BEGIN])) { return array(); }
$head = array($this->_[HDOM_INFO_BEGIN] => 1);
$cmd = ' '; // Combinator
// handle descendant selectors, no recursive!
for ($l = 0; $l < $levle; ++$l) {
$ret = array();
foreach ($head as $k => $v) {
$n = ($k === -1) ? $this->dom->root : $this->dom->nodes[$k];
//PaperG - Pass this optional parameter on to the seek function.
$n->seek($selectors[$c][$l], $ret, $cmd, $lowercase);
}
$head = $ret;
$cmd = $selectors[$c][$l][4]; // Next Combinator
}
foreach ($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 $found; }
elseif ($idx < 0) { $idx = count($found) + $idx; }
return (isset($found[$idx])) ? $found[$idx] : null;
}
/**
* Seek DOM elements by selector
*
* **Note**
* The selector element must be compatible to a selector from
* {@see simple_html_dom_node::parse_selector()}
*
* @param array $selector A selector element
* @param array $ret An array of matches
* @param bool $lowercase Matches tag names case insensitive (lowercase) if
* enabled (default: `false`)
* @return void
*/
protected function seek($selector, &$ret, $parent_cmd, $lowercase = false)
{
global $debug_object;
if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
list($tag, $id, $class, $attributes, $cmb) = $selector;
$nodes = array();
if ($parent_cmd === ' ') { // Descendant Combinator
// Find parent closing tag if the current element doesn't have a closing
// tag (i.e. void element)
$end = (!empty($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];
}
// Get list of target nodes
$nodes_start = $this->_[HDOM_INFO_BEGIN] + 1;
$nodes_count = $end - $nodes_start;
$nodes = array_slice($this->dom->nodes, $nodes_start, $nodes_count, true);
} elseif ($parent_cmd === '>') { // Child Combinator
$nodes = $this->children;
} elseif ($parent_cmd === '+'
&& $this->parent
&& in_array($this, $this->parent->children)) { // Next-Sibling Combinator
$index = array_search($this, $this->parent->children, true) + 1;
$nodes[] = $this->parent->children[$index];
} elseif ($parent_cmd === '~'
&& $this->parent
&& in_array($this, $this->parent->children)) { // Subsequent Sibling Combinator
$index = array_search($this, $this->parent->children, true);
$nodes = array_slice($this->parent->children, $index);
}
// Go throgh each element starting at this element until the end tag
// Note: If this element is a void tag, any previous void element is
// skipped.
foreach($nodes as $node) {
$pass = true;
// Skip root nodes
if(!$node->parent) {
$pass = false;
}
// Skip if node isn't a child node (i.e. text nodes)
if($pass && !in_array($node, $node->parent->children, true)) {
$pass = false;
}
// Skip if tag doesn't match
if ($pass && $tag !== '' && $tag !== $node->tag && $tag !== '*') {
$pass = false;
}
// Skip if ID doesn't exist
if ($pass && $id !== '' && !isset($node->attr['id'])) {
$pass = false;
}
// Check if ID matches
if ($pass && $id !== '' && isset($node->attr['id'])) {
// Note: Only consider the first ID (as browsers do)
$node_id = explode(' ', trim($node->attr['id']))[0];
if($id !== $node_id) { $pass = false; }
}
// Check if all class(es) exist
if ($pass && $class !== '' && is_array($class) && !empty($class)) {
if (isset($node->attr['class'])) {
$node_classes = explode(' ', $node->attr['class']);
if ($lowercase) {
$node_classes = array_map('strtolower', $node_classes);
}
foreach($class as $c) {
if(!in_array($c, $node_classes)) {
$pass = false;
break;
}
}
} else {
$pass = false;
}
}
// Check attributes
if ($pass
&& $attributes !== ''
&& is_array($attributes)
&& !empty($attributes)) {
foreach($attributes as $a) {
list (
$att_name,
$att_expr,
$att_val,
$att_inv,
$att_case_sensitivity
) = $a;
// Handle indexing attributes (i.e. "[2]")
/**
* Note: This is not supported by the CSS Standard but adds
* the ability to select items compatible to XPath (i.e.
* the 3rd element within it's parent).
*
* Note: This doesn't conflict with the CSS Standard which
* doesn't work on numeric attributes anyway.
*/
if (is_numeric($att_name)
&& $att_expr === ''
&& $att_val === '') {
$count = 0;
// Find index of current element in parent
foreach ($node->parent->children as $c) {
if ($c->tag === $node->tag) ++$count;
if ($c === $node) break;
}
// If this is the correct node, continue with next
// attribute
if ($count === (int)$att_name) continue;
}
// Check attribute availability
if ($att_inv) { // Attribute should NOT be set
if (isset($node->attr[$att_name])) {
$pass = false;
break;
}
} else { // Attribute should be set
// todo: "plaintext" is not a valid CSS selector!
if ($att_name !== 'plaintext'
&& !isset($node->attr[$att_name])) {
$pass = false;
break;
}
}
// Continue with next attribute if expression isn't defined
if ($att_expr === '') continue;
// If they have told us that this is a "plaintext"
// search then we want the plaintext of the node - right?
// todo "plaintext" is not a valid CSS selector!
if ($att_name === 'plaintext') {
$nodeKeyValue = $node->text();
} else {
$nodeKeyValue = $node->attr[$att_name];
}
if (is_object($debug_object)) {
$debug_object->debug_log(2,
'testing node: '
. $node->tag
. ' for attribute: '
. $att_name
. $att_expr
. $att_val
. ' where nodes value is: '
. $nodeKeyValue
);
}
// If lowercase is set, do a case insensitive test of
// the value of the selector.
if ($lowercase) {
$check = $this->match(
$att_expr,
strtolower($att_val),
strtolower($nodeKeyValue),
$att_case_sensitivity
);
} else {
$check = $this->match(
$att_expr,
$att_val,
$nodeKeyValue,
$att_case_sensitivity
);
}
if (is_object($debug_object)) {
$debug_object->debug_log(2,
'after match: '
. ($check ? 'true' : 'false')
);
}
if (!$check) {
$pass = false;
break;
}
}
}
// Found a match. Add to list and clear node
if ($pass) $ret[$node->_[HDOM_INFO_BEGIN]] = 1;
unset($node);
}
// It's passed by reference so this is actually what this function returns.
if (is_object($debug_object)) {
$debug_object->debug_log(1, 'EXIT - ret: ', $ret);
}
}
/**
* Match value and pattern for a given CSS expression
*
* **Supported Expressions**
*
* | Expression | Description
* | ---------- | -----------
* | `=` | $value and $pattern must be equal
* | `!=` | $value and $pattern must not be equal
* | `^=` | $value must start with $pattern
* | `$=` | $value must end with $pattern
* | `*=` | $value must contain $pattern
*
* @param string $exp The expression.
* @param string $pattern The pattern
* @param string $value The value
* @value bool True if $value matches $pattern
*/
protected function match($exp, $pattern, $value, $case_sensitivity)
{
global $debug_object;
if (is_object($debug_object)) {$debug_object->debug_log_entry(1);}
if ($case_sensitivity === 'i') {
$pattern = strtolower($pattern);
$value = strtolower($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($pattern, '/') . '$/', $value);
case '*=':
return preg_match('/' . preg_quote($pattern, '/') . '/', $value);
case '|=':
/**
* [att|=val]
*
* Represents an element with the att attribute, its value
* either being exactly "val" or beginning with "val"
* immediately followed by "-" (U+002D).
*/
return strpos($value, $pattern) === 0;
case '~=':
/**
* [att~=val]
*
* Represents an element with the att attribute whose value is a
* whitespace-separated list of words, one of which is exactly
* "val". If "val" contains whitespace, it will never represent
* anything (since the words are separated by spaces). Also if
* "val" is the empty string, it will never represent anything.
*/
return in_array($pattern, explode(' ', trim($value)), true);
}
return false;
}
/**
* Parse CSS selector
*
* @param string $selector_string CSS selector string
* @return array List of CSS selectors. The format depends on the type of
* selector:
*
* ```php
*
* array( // list of selectors (each separated by a comma), i.e. 'img, p, div'
* array( // list of combinator selectors, i.e. 'img > p > div'
* array( // selector element
* [0], // (string) The element tag
* [1], // (string) The element id
* [2], // (array<string>) The element classes
* [3], // (array<array<string>>) The list of attributes, each
* // with four elements: name, expression, value, inverted
* [4] // (string) The selector combinator (' ' | '>' | '+' | '~')
* )
* )
* )
* ```
*
* @link https://www.w3.org/TR/selectors/#compound Compound selector
*/
protected function parse_selector($selector_string)
{
global $debug_object;
if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
/**
* Pattern of CSS selectors, modified from mootools (https://mootools.net/)
*
* Paperg: Add the colon to the attribute, so that it properly finds
* <tag attr:ibute="something" > like google does.
*
* Note: if you try to look at this attribute, you MUST use getAttribute
* since $dom->x:y will fail the php syntax check.
*
* Notice the \[ starting the attribute? and the @? following? This
* implies that an attribute can begin with an @ sign that is not
* captured. This implies that an html attribute specifier may start
* with an @ sign that is NOT captured by the expression. Farther study
* is required to determine of this should be documented or removed.
*
* Matches selectors in this order:
*
* [0] - full match
*
* [1] - tag name
* ([\w:\*-]*)
* Matches the tag name consisting of zero or more words, colons,
* asterisks and hyphens.
*
* [2] - id name
* (?:\#([\w-]+))
* Optionally matches a id name, consisting of an "#" followed by
* the id name (one or more words and hyphens).
*
* [3] - class names (including dots)
* (?:\.([\w\.-]+))?
* Optionally matches a list of classs, consisting of an "."
* followed by the class name (one or more words and hyphens)
* where multiple classes can be chained (i.e. ".foo.bar.baz")
*
* [4] - attributes
* ((?:\[@?(?:!?[\w:-]+)(?:(?:[!*^$|~]?=)[\"']?(?:.*?)[\"']?)?(?:\s*?(?:[iIsS])?)?\])+)?
* Optionally matches the attributes list
*
* [5] - separator
* ([\/, >+~]+)
* Matches the selector list separator
*/
// phpcs:ignore Generic.Files.LineLength
$pattern = "/([\w:\*-]*)(?:\#([\w-]+))?(?:|\.([\w\.-]+))?((?:\[@?(?:!?[\w:-]+)(?:(?:[!*^$|~]?=)[\"']?(?:.*?)[\"']?)?(?:\s*?(?:[iIsS])?)?\])+)?([\/, >+~]+)/is";
preg_match_all(
$pattern,
trim($selector_string) . ' ', // Add final ' ' as pseudo separator
$matches,
PREG_SET_ORDER
);
if (is_object($debug_object)) {
$debug_object->debug_log(2, 'Matches Array: ', $matches);
}
$selectors = array();
$result = array();
foreach ($matches as $m) {
$m[0] = trim($m[0]);
// Skip NoOps
if ($m[0] === '' || $m[0] === '/' || $m[0] === '//') { continue; }
// Convert to lowercase
if ($this->dom->lowercase) {
$m[1] = strtolower($m[1]);
}
// Extract classes
if ($m[3] !== '') { $m[3] = explode('.', $m[3]); }
/* Extract attributes (pattern based on the pattern above!)
* [0] - full match
* [1] - attribute name
* [2] - attribute expression
* [3] - attribute value
* [4] - case sensitivity
*
* Note: Attributes can be negated with a "!" prefix to their name
*/
if($m[4] !== '') {
preg_match_all(
"/\[@?(!?[\w:-]+)(?:([!*^$|~]?=)[\"']?(.*?)[\"']?)?(?:\s*?([iIsS])?)?\]/is",
trim($m[4]),
$attributes,
PREG_SET_ORDER
);
// Replace element by array
$m[4] = array();
foreach($attributes as $att) {
// Skip empty matches
if(trim($att[0]) === '') { continue; }
$inverted = (isset($att[1][0]) && $att[1][0] === '!');
$m[4][] = array(
$inverted ? substr($att[1], 1) : $att[1], // Name
(isset($att[2])) ? $att[2] : '', // Expression
(isset($att[3])) ? $att[3] : '', // Value
$inverted, // Inverted Flag
(isset($att[4])) ? strtolower($att[4]) : '', // Case-Sensitivity
);
}
}
// Sanitize Separator
if ($m[5] !== '' && trim($m[5]) === '') { // Descendant Separator
$m[5] = ' ';
} else { // Other Separator
$m[5] = trim($m[5]);
}
// Clear Separator if it's a Selector List
if ($is_list = ($m[5] === ',')) { $m[5] = ''; }
// Remove full match before adding to results
array_shift($m);
$result[] = $m;
if ($is_list) { // Selector List
$selectors[] = $result;
$result = array();
}
}
if (count($result) > 0) { $selectors[] = $result; }
return $selectors;
}
function __get($name)
{
if (isset($this->attr[$name])) {
return $this->convert_text($this->attr[$name]);
}
switch ($name) {
case 'outertext': return $this->outertext();
case 'innertext': return $this->innertext();
case 'plaintext': return $this->text();
case 'xmltext': return $this->xmltext();
default: return array_key_exists($name, $this->attr);
}
}
function __set($name, $value)
{
global $debug_object;
if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
switch ($name) {
case 'outertext': return $this->_[HDOM_INFO_OUTER] = $value;
case 'innertext':
if (isset($this->_[HDOM_INFO_TEXT])) {
return $this->_[HDOM_INFO_TEXT] = $value;
}
return $this->_[HDOM_INFO_INNER] = $value;
}
if (!isset($this->attr[$name])) {
$this->_[HDOM_INFO_SPACE][] = array(' ', '', '');
$this->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE;
}
$this->attr[$name] = $value;
}
function __isset($name)
{
switch ($name) {
case 'outertext': return true;
case 'innertext': return true;
case 'plaintext': return true;
}
//no value attr: nowrap, checked selected...
return (array_key_exists($name, $this->attr)) ? true : isset($this->attr[$name]);
}
function __unset($name)
{
if (isset($this->attr[$name])) { unset($this->attr[$name]); }
}
// PaperG - Function to convert the text from one character set to another
// if the two sets are not the same.
function convert_text($text)
{
global $debug_object;
if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
$converted_text = $text;
$sourceCharset = '';
$targetCharset = '';
if ($this->dom) {
$sourceCharset = strtoupper($this->dom->_charset);
$targetCharset = strtoupper($this->dom->_target_charset);
}
if (is_object($debug_object)) {
$debug_object->debug_log(3,
'source charset: '
. $sourceCharset
. ' target charaset: '
. $targetCharset
);
}
if (!empty($sourceCharset)
&& !empty($targetCharset)
&& (strcasecmp($sourceCharset, $targetCharset) != 0)) {
// Check if the reported encoding could have been incorrect and the text is actually already UTF-8
if ((strcasecmp($targetCharset, 'UTF-8') == 0)
&& ($this->is_utf8($text))) {
$converted_text = $text;
} else {
$converted_text = iconv($sourceCharset, $targetCharset, $text);
}
}
// Lets make sure that we don't have that silly BOM issue with any of the utf-8 text we output.
if ($targetCharset === 'UTF-8') {
if (substr($converted_text, 0, 3) === "\xef\xbb\xbf") {
$converted_text = substr($converted_text, 3);
}
if (substr($converted_text, -3) === "\xef\xbb\xbf") {
$converted_text = substr($converted_text, 0, -3);
}
}
return $converted_text;
}
/**
* Returns true if $string is valid UTF-8 and false otherwise.
*
* @param mixed $str String to be tested
* @return boolean
*/
static function is_utf8($str)
{
$c = 0; $b = 0;
$bits = 0;
$len = strlen($str);
for($i = 0; $i < $len; $i++) {
$c = ord($str[$i]);
if($c > 128) {
if(($c >= 254)) { return false; }
elseif($c >= 252) { $bits = 6; }
elseif($c >= 248) { $bits = 5; }
elseif($c >= 240) { $bits = 4; }
elseif($c >= 224) { $bits = 3; }
elseif($c >= 192) { $bits = 2; }
else { return false; }
if(($i + $bits) > $len) { return false; }
while($bits > 1) {
$i++;
$b = ord($str[$i]);
if($b < 128 || $b > 191) { return false; }
$bits--;
}
}
}
return true;
}
/**
* Function to try a few tricks to determine the displayed size of an img on
* the page. NOTE: This will ONLY work on an IMG tag. Returns FALSE on all
* other tag types.
*
* @author John Schlick
* @version April 19 2012
* @return array an array containing the 'height' and 'width' of the image
* on the page or -1 if we can't figure it out.
*/
function get_display_size()
{
global $debug_object;
$width = -1;
$height = -1;
if ($this->tag !== 'img') {
return false;
}
// See if there is aheight or width attribute in the tag itself.
if (isset($this->attr['width'])) {
$width = $this->attr['width'];
}
if (isset($this->attr['height'])) {
$height = $this->attr['height'];
}
// Now look for an inline style.
if (isset($this->attr['style'])) {
// Thanks to user gnarf from stackoverflow for this regular expression.
$attributes = array();
preg_match_all(
'/([\w-]+)\s*:\s*([^;]+)\s*;?/',
$this->attr['style'],
$matches,
PREG_SET_ORDER
);
foreach ($matches as $match) {
$attributes[$match[1]] = $match[2];
}
// If there is a width in the style attributes:
if (isset($attributes['width']) && $width == -1) {
// check that the last two characters are px (pixels)
if (strtolower(substr($attributes['width'], -2)) === 'px') {
$proposed_width = substr($attributes['width'], 0, -2);
// Now make sure that it's an integer and not something stupid.
if (filter_var($proposed_width, FILTER_VALIDATE_INT)) {
$width = $proposed_width;
}
}
}
// If there is a width in the style attributes:
if (isset($attributes['height']) && $height == -1) {
// check that the last two characters are px (pixels)
if (strtolower(substr($attributes['height'], -2)) == 'px') {
$proposed_height = substr($attributes['height'], 0, -2);
// Now make sure that it's an integer and not something stupid.
if (filter_var($proposed_height, FILTER_VALIDATE_INT)) {
$height = $proposed_height;
}
}
}
}
// Future enhancement:
// Look in the tag to see if there is a class or id specified that has
// a height or width attribute to it.
// Far future enhancement
// Look at all the parent tags of this image to see if they specify a
// class or id that has an img selector that specifies a height or width
// Note that in this case, the class or id will have the img subselector
// for it to apply to the image.
// ridiculously far future development
// If the class or id is specified in a SEPARATE css file thats not on
// the page, go get it and do what we were just doing for the ones on
// the page.
$result = array(
'height' => $height,
'width' => $width
);
return $result;
}
// camel naming conventions
function getAllAttributes()
{
return $this->attr;
}
function getAttribute($name)
{
return $this->__get($name);
}
function setAttribute($name, $value)
{
$this->__set($name, $value);
}
function hasAttribute($name)
{
return $this->__isset($name);
}
function removeAttribute($name)
{
$this->__set($name, null);
}
function getElementById($id)
{
return $this->find("#$id", 0);
}
function getElementsById($id, $idx = null)
{
return $this->find("#$id", $idx);
}
function getElementByTagName($name)
{
return $this->find($name, 0);
}
function getElementsByTagName($name, $idx = null)
{
return $this->find($name, $idx);
}
function parentNode()
{
return $this->parent();
}
function childNodes($idx = -1)
{
return $this->children($idx);
}
function firstChild()
{
return $this->first_child();
}
function lastChild()
{
return $this->last_child();
}
function nextSibling()
{
return $this->next_sibling();
}
function previousSibling()
{
return $this->prev_sibling();
}
function hasChildNodes()
{
return $this->has_child();
}
function nodeName()
{
return $this->tag;
}
function appendChild($node)
{
$node->parent($this);
return $node;
}
}
/**
* simple html dom parser
*
* Paperg - in the find routine: allow us to specify that we want case
* insensitive testing of the value of the selector.
*
* Paperg - change $size from protected to public so we can easily access it
*
* Paperg - added ForceTagsClosed in the constructor which tells us whether we
* trust the html or not. Default is to NOT trust it.
*
* @package PlaceLocalInclude
*/
class simple_html_dom
{
/**
* The root node of the document
*
* @var object
*/
public $root = null;
/**
* List of nodes in the current DOM
*
* @var array
*/
public $nodes = array();
/**
* Callback function to run for each element in the DOM.
*
* @var callable|null
*/
public $callback = null;
/**
* Indicates how tags and attributes are matched
*
* @var bool When set to **true** tags and attributes will be converted to
* lowercase before matching.
*/
public $lowercase = false;
/**
* Original document size
*
* Holds the original document size.
*
* @var int
*/
public $original_size;
/**
* Current document size
*
* Holds the current document size. The document size is determined by the
* string length of ({@see simple_html_dom::$doc}).
*
* _Note_: Using this variable is more efficient than calling `strlen($doc)`
*
* @var int
* */
public $size;
/**
* Current position in the document
*
* @var int
*/
protected $pos;
/**
* The document
*
* @var string
*/
protected $doc;
/**
* Current character
*
* Holds the current character at position {@see simple_html_dom::$pos} in
* the document {@see simple_html_dom::$doc}
*
* _Note_: Using this variable is more efficient than calling
* `substr($doc, $pos, 1)`
*
* @var string
*/
protected $char;
protected $cursor;
/**
* Parent node of the next node detected by the parser
*
* @var object
*/
protected $parent;
protected $noise = array();
/**
* Tokens considered blank in HTML
*
* @var string
*/
protected $token_blank = " \t\r\n";
/**
* Tokens to identify the equal sign for attributes, stopping either at the
* closing tag ("/" i.e. "<html />") or the end of an opening tag (">" i.e.
* "<html>")
*
* @var string
*/
protected $token_equal = ' =/>';
/**
* Tokens to identify the end of a tag name. A tag name either ends on the
* ending slash ("/" i.e. "<html/>") or whitespace ("\s\r\n\t")
*
* @var string
*/
protected $token_slash = " />\r\n\t";
/**
* Tokens to identify the end of an attribute
*
* @var string
*/
protected $token_attr = ' >';
// Note that this is referenced by a child node, and so it needs to be
// public for that node to see this information.
public $_charset = '';
public $_target_charset = '';
/**
* Innertext for <br> elements
*
* @var string
*/
protected $default_br_text = '';
/**
* Suffix for <span> elements
*
* @var string
*/
public $default_span_text = '';
/**
* Defines a list of self-closing tags (Void elements) according to the HTML
* Specification
*
* _Remarks_:
* - Use `isset()` instead of `in_array()` on array elements to boost
* performance about 30%
* - Sort elements by name for better readability!
*
* @link https://www.w3.org/TR/html HTML Specification
* @link https://www.w3.org/TR/html/syntax.html#void-elements Void elements
*/
protected $self_closing_tags = array(
'area' => 1,
'base' => 1,
'br' => 1,
'col' => 1,
'embed' => 1,
'hr' => 1,
'img' => 1,
'input' => 1,
'link' => 1,
'meta' => 1,
'param' => 1,
'source' => 1,
'track' => 1,
'wbr' => 1
);
/**
* Defines a list of tags which - if closed - close all optional closing
* elements within if they haven't been closed yet. (So, an element where
* neither opening nor closing tag is omissible consistently closes every
* optional closing element within)
*
* _Remarks_:
* - Use `isset()` instead of `in_array()` on array elements to boost
* performance about 30%
* - Sort elements by name for better readability!
*/
protected $block_tags = array(
'body' => 1,
'div' => 1,
'form' => 1,
'root' => 1,
'span' => 1,
'table' => 1
);
/**
* Defines elements whose end tag is omissible.
*
* * key = Name of an element whose end tag is omissible.
* * value = Names of elements whose end tag is omissible, that are closed
* by the current element.
*
* _Remarks_:
* - Use `isset()` instead of `in_array()` on array elements to boost
* performance about 30%
* - Sort elements by name for better readability!
*
* **Example**
*
* An `li` element’s end tag may be omitted if the `li` element is immediately
* followed by another `li` element. To do that, add following element to the
* array:
*
* ```php
* 'li' => array('li'),
* ```
*
* With this, the following two examples are considered equal. Note that the
* second example is missing the closing tags on `li` elements.
*
* ```html
* <ul><li>First Item</li><li>Second Item</li></ul>
* ```
*
* <ul><li>First Item</li><li>Second Item</li></ul>
*
* ```html
* <ul><li>First Item<li>Second Item</ul>
* ```
*
* <ul><li>First Item<li>Second Item</ul>
*
* @var array A two-dimensional array where the key is the name of an
* element whose end tag is omissible and the value is an array of elements
* whose end tag is omissible, that are closed by the current element.
*
* @link https://www.w3.org/TR/html/syntax.html#optional-tags Optional tags
*
* @todo The implementation of optional closing tags doesn't work in all cases
* because it only consideres elements who close other optional closing
* tags, not taking into account that some (non-blocking) tags should close
* these optional closing tags. For example, the end tag for "p" is omissible
* and can be closed by an "address" element, whose end tag is NOT omissible.
* Currently a "p" element without closing tag stops at the next "p" element
* or blocking tag, even if it contains other elements.
*
* @todo Known sourceforge issue #2977341
* B tags that are not closed cause us to return everything to the end of
* the document.
*/
protected $optional_closing_tags = array(
// Not optional, see
// https://www.w3.org/TR/html/textlevel-semantics.html#the-b-element
'b' => array('b' => 1),
'dd' => array('dd' => 1, 'dt' => 1),
// Not optional, see
// https://www.w3.org/TR/html/grouping-content.html#the-dl-element
'dl' => array('dd' => 1, 'dt' => 1),
'dt' => array('dd' => 1, 'dt' => 1),
'li' => array('li' => 1),
'optgroup' => array('optgroup' => 1, 'option' => 1),
'option' => array('optgroup' => 1, 'option' => 1),
'p' => array('p' => 1),
'rp' => array('rp' => 1, 'rt' => 1),
'rt' => array('rp' => 1, 'rt' => 1),
'td' => array('td' => 1, 'th' => 1),
'th' => array('td' => 1, 'th' => 1),
'tr' => array('td' => 1, 'th' => 1, 'tr' => 1),
);
function __construct(
$str = null,
$lowercase = true,
$forceTagsClosed = true,
$target_charset = DEFAULT_TARGET_CHARSET,
$stripRN = true,
$defaultBRText = DEFAULT_BR_TEXT,
$defaultSpanText = DEFAULT_SPAN_TEXT,
$options = 0)
{
if ($str) {
if (preg_match('/^http:\/\//i', $str) || is_file($str)) {
$this->load_file($str);
} else {
$this->load(
$str,
$lowercase,
$stripRN,
$defaultBRText,
$defaultSpanText,
$options
);
}
}
// Forcing tags to be closed implies that we don't trust the html, but
// it can lead to parsing errors if we SHOULD trust the html.
if (!$forceTagsClosed) {
$this->optional_closing_array = array();
}
$this->_target_charset = $target_charset;
}
function __destruct()
{
$this->clear();
}
// load html from string
function load(
$str,
$lowercase = true,
$stripRN = true,
$defaultBRText = DEFAULT_BR_TEXT,
$defaultSpanText = DEFAULT_SPAN_TEXT,
$options = 0)
{
global $debug_object;
// prepare
$this->prepare($str, $lowercase, $defaultBRText, $defaultSpanText);
// Per sourceforge http://sourceforge.net/tracker/?func=detail&aid=2949097&group_id=218559&atid=1044037
// Script tags removal now preceeds style tag removal.
// strip out <script> tags
$this->remove_noise("'<\s*script[^>]*[^/]>(.*?)<\s*/\s*script\s*>'is");
$this->remove_noise("'<\s*script\s*>(.*?)<\s*/\s*script\s*>'is");
// strip out the \r \n's if we are told to.
if ($stripRN) {
$this->doc = str_replace("\r", ' ', $this->doc);
$this->doc = str_replace("\n", ' ', $this->doc);
// set the length of content since we have changed it.
$this->size = strlen($this->doc);
}
// strip out cdata
$this->remove_noise("'<!\[CDATA\[(.*?)\]\]>'is", true);
// strip out comments
$this->remove_noise("'<!--(.*?)-->'is");
// strip out <style> tags
$this->remove_noise("'<\s*style[^>]*[^/]>(.*?)<\s*/\s*style\s*>'is");
$this->remove_noise("'<\s*style\s*>(.*?)<\s*/\s*style\s*>'is");
// strip out preformatted tags
$this->remove_noise("'<\s*(?:code)[^>]*>(.*?)<\s*/\s*(?:code)\s*>'is");
// strip out server side scripts
$this->remove_noise("'(<\?)(.*?)(\?>)'s", true);
if($options & HDOM_SMARTY_AS_TEXT) { // Strip Smarty scripts
$this->remove_noise("'(\{\w)(.*?)(\})'s", true);
}
// parsing
$this->parse();
// end
$this->root->_[HDOM_INFO_END] = $this->cursor;
$this->parse_charset();
// make load function chainable
return $this;
}
// load html from file
function load_file()
{
$args = func_get_args();
if(($doc = call_user_func_array('file_get_contents', $args)) !== false) {
$this->load($doc, true);
} else {
return false;
}
}
/**
* Set the callback function
*
* @param callable $function_name Callback function to run for each element
* in the DOM.
* @return void
*/
function set_callback($function_name)
{
$this->callback = $function_name;
}
/**
* Remove callback function
*
* @return void
*/
function remove_callback()
{
$this->callback = null;
}
// save dom as string
function save($filepath = '')
{
$ret = $this->root->innertext();
if ($filepath !== '') { file_put_contents($filepath, $ret, LOCK_EX); }
return $ret;
}
// find dom node by css selector
// Paperg - allow us to specify that we want case insensitive testing of the value of the selector.
function find($selector, $idx = null, $lowercase = false)
{
return $this->root->find($selector, $idx, $lowercase);
}
// clean up memory due to php5 circular references memory leak...
function clear()
{
foreach ($this->nodes as $n) {
$n->clear(); $n = null;
}
// This add next line is documented in the sourceforge repository.
// 2977248 as a fix for ongoing memory leaks that occur even with the
// use of clear.
if (isset($this->children)) {
foreach ($this->children as $n) {
$n->clear(); $n = null;
}
}
if (isset($this->parent)) {
$this->parent->clear();
unset($this->parent);
}
if (isset($this->root)) {
$this->root->clear();
unset($this->root);
}
unset($this->doc);
unset($this->noise);
}
function dump($show_attr = true)
{
$this->root->dump($show_attr);
}
// prepare HTML data and init everything
protected function prepare(
$str, $lowercase = true,
$defaultBRText = DEFAULT_BR_TEXT,
$defaultSpanText = DEFAULT_SPAN_TEXT)
{
$this->clear();
$this->doc = trim($str);
$this->size = strlen($this->doc);
$this->original_size = $this->size; // original size of the html
$this->pos = 0;
$this->cursor = 1;
$this->noise = array();
$this->nodes = array();
$this->lowercase = $lowercase;
$this->default_br_text = $defaultBRText;
$this->default_span_text = $defaultSpanText;
$this->root = new simple_html_dom_node($this);
$this->root->tag = 'root';
$this->root->_[HDOM_INFO_BEGIN] = -1;
$this->root->nodetype = HDOM_TYPE_ROOT;
$this->parent = $this->root;
if ($this->size > 0) { $this->char = $this->doc[0]; }
}
/**
* Parse HTML content
*
* @return bool True on success
*/
protected function parse()
{
while (true) {
// Read next tag if there is no text between current position and the
// next opening tag.
if (($s = $this->copy_until_char('<')) === '') {
if($this->read_tag()) {
continue;
} else {
return true;
}
}
// Add a text node for text between tags
$node = new simple_html_dom_node($this);
++$this->cursor;
$node->_[HDOM_INFO_TEXT] = $s;
$this->link_nodes($node, false);
}
}
// PAPERG - dkchou - added this to try to identify the character set of the
// page we have just parsed so we know better how to spit it out later.
// NOTE: IF you provide a routine called
// get_last_retrieve_url_contents_content_type which returns the
// CURLINFO_CONTENT_TYPE from the last curl_exec
// (or the content_type header from the last transfer), we will parse THAT,
// and if a charset is specified, we will use it over any other mechanism.
protected function parse_charset()
{
global $debug_object;
$charset = null;
if (function_exists('get_last_retrieve_url_contents_content_type')) {
$contentTypeHeader = get_last_retrieve_url_contents_content_type();
$success = preg_match('/charset=(.+)/', $contentTypeHeader, $matches);
if ($success) {
$charset = $matches[1];
if (is_object($debug_object)) {
$debug_object->debug_log(2,
'header content-type found charset of: '
. $charset
);
}
}
}
if (empty($charset)) {
$el = $this->root->find('meta[http-equiv=Content-Type]', 0, true);
if (!empty($el)) {
$fullvalue = $el->content;
if (is_object($debug_object)) {
$debug_object->debug_log(2,
'meta content-type tag found'
. $fullvalue
);
}
if (!empty($fullvalue)) {
$success = preg_match(
'/charset=(.+)/i',
$fullvalue,
$matches
);
if ($success) {
$charset = $matches[1];
} else {
// If there is a meta tag, and they don't specify the
// character set, research says that it's typically
// ISO-8859-1
if (is_object($debug_object)) {
$debug_object->debug_log(2,
'meta content-type tag couldn\'t be parsed. using iso-8859 default.'
);
}
$charset = 'ISO-8859-1';
}
}
}
}
// If we couldn't find a charset above, then lets try to detect one
// based on the text we got...
if (empty($charset)) {
// Use this in case mb_detect_charset isn't installed/loaded on
// this machine.
$charset = false;
if (function_exists('mb_detect_encoding')) {
// Have php try to detect the encoding from the text given to us.
$charset = mb_detect_encoding(
$this->doc . 'ascii',
$encoding_list = array( 'UTF-8', 'CP1252' )
);
if (is_object($debug_object)) {
$debug_object->debug_log(2, 'mb_detect found: ' . $charset);
}
}
// and if this doesn't work... then we need to just wrongheadedly
// assume it's UTF-8 so that we can move on - cause this will
// usually give us most of what we need...
if ($charset === false) {
if (is_object($debug_object)) {
$debug_object->debug_log(
2,
'since mb_detect failed - using default of utf-8'
);
}
$charset = 'UTF-8';
}
}
// Since CP1252 is a superset, if we get one of it's subsets, we want
// it instead.
if ((strtolower($charset) == strtolower('ISO-8859-1'))
|| (strtolower($charset) == strtolower('Latin1'))
|| (strtolower($charset) == strtolower('Latin-1'))) {
if (is_object($debug_object)) {
$debug_object->debug_log(
2,
'replacing ' . $charset . ' with CP1252 as its a superset'
);
}
$charset = 'CP1252';
}
if (is_object($debug_object)) {
$debug_object->debug_log(1, 'EXIT - ' . $charset);
}
return $this->_charset = $charset;
}
/**
* Parse tag from current document position.
*
* @return bool True if a tag was found, false otherwise
*/
protected function read_tag()
{
// Set end position if no further tags found
if ($this->char !== '<') {
$this->root->_[HDOM_INFO_END] = $this->cursor;
return false;
}
$begin_tag_pos = $this->pos;
$this->char = (++$this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
// end tag
if ($this->char === '/') {
$this->char = (++$this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
// Skip whitespace in end tags (i.e. in "</ html>")
$this->skip($this->token_blank);
$tag = $this->copy_until_char('>');
// Skip attributes in end tags
if (($pos = strpos($tag, ' ')) !== false) {
$tag = substr($tag, 0, $pos);
}
$parent_lower = strtolower($this->parent->tag);
$tag_lower = strtolower($tag);
// The end tag is supposed to close the parent tag. Handle situations
// when it doesn't
if ($parent_lower !== $tag_lower) {
// Parent tag does not have to be closed necessarily (optional closing tag)
// Current tag is a block tag, so it may close an ancestor
if (isset($this->optional_closing_tags[$parent_lower])
&& isset($this->block_tags[$tag_lower])) {
$this->parent->_[HDOM_INFO_END] = 0;
$org_parent = $this->parent;
// Traverse ancestors to find a matching opening tag
// Stop at root node
while (($this->parent->parent)
&& strtolower($this->parent->tag) !== $tag_lower
){
$this->parent = $this->parent->parent;
}
// If we don't have a match add current tag as text node
if (strtolower($this->parent->tag) !== $tag_lower) {
$this->parent = $org_parent; // restore origonal parent
if ($this->parent->parent) {
$this->parent = $this->parent->parent;
}
$this->parent->_[HDOM_INFO_END] = $this->cursor;
return $this->as_text_node($tag);
}
} elseif (($this->parent->parent)
&& isset($this->block_tags[$tag_lower])
) {
// Grandparent exists and current tag is a block tag, so our
// parent doesn't have an end tag
$this->parent->_[HDOM_INFO_END] = 0; // No end tag
$org_parent = $this->parent;
// Traverse ancestors to find a matching opening tag
// Stop at root node
while (($this->parent->parent)
&& strtolower($this->parent->tag) !== $tag_lower
) {
$this->parent = $this->parent->parent;
}
// If we don't have a match add current tag as text node
if (strtolower($this->parent->tag) !== $tag_lower) {
$this->parent = $org_parent; // restore origonal parent
$this->parent->_[HDOM_INFO_END] = $this->cursor;
return $this->as_text_node($tag);
}
} elseif (($this->parent->parent)
&& strtolower($this->parent->parent->tag) === $tag_lower
) { // Grandparent exists and current tag closes it
$this->parent->_[HDOM_INFO_END] = 0;
$this->parent = $this->parent->parent;
} else { // Random tag, add as text node
return $this->as_text_node($tag);
}
}
// Set end position of parent tag to current cursor position
$this->parent->_[HDOM_INFO_END] = $this->cursor;
if ($this->parent->parent) {
$this->parent = $this->parent->parent;
}
$this->char = (++$this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
return true;
}
// start tag
$node = new simple_html_dom_node($this);
$node->_[HDOM_INFO_BEGIN] = $this->cursor;
++$this->cursor;
$tag = $this->copy_until($this->token_slash); // Get tag name
$node->tag_start = $begin_tag_pos;
// doctype, cdata & comments...
// <!DOCTYPE html>
// <![CDATA[ ... ]]>
// <!-- Comment -->
if (isset($tag[0]) && $tag[0] === '!') {
$node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until_char('>');
if (isset($tag[2]) && $tag[1] === '-' && $tag[2] === '-') { // Comment ("<!--")
$node->nodetype = HDOM_TYPE_COMMENT;
$node->tag = 'comment';
} else { // Could be doctype or CDATA but we don't care
$node->nodetype = HDOM_TYPE_UNKNOWN;
$node->tag = 'unknown';
}
if ($this->char === '>') { $node->_[HDOM_INFO_TEXT] .= '>'; }
$this->link_nodes($node, true);
$this->char = (++$this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
return true;
}
// The start tag cannot contain another start tag, if so add as text
// i.e. "<<html>"
if ($pos = strpos($tag, '<') !== false) {
$tag = '<' . substr($tag, 0, -1);
$node->_[HDOM_INFO_TEXT] = $tag;
$this->link_nodes($node, false);
$this->char = $this->doc[--$this->pos]; // prev
return true;
}
// Handle invalid tag names (i.e. "<html#doc>")
if (!preg_match('/^\w[\w:-]*$/', $tag)) {
$node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until('<>');
// Next char is the beginning of a new tag, don't touch it.
if ($this->char === '<') {
$this->link_nodes($node, false);
return true;
}
// Next char closes current tag, add and be done with it.
if ($this->char === '>') { $node->_[HDOM_INFO_TEXT] .= '>'; }
$this->link_nodes($node, false);
$this->char = (++$this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
return true;
}
// begin tag, add new node
$node->nodetype = HDOM_TYPE_ELEMENT;
$tag_lower = strtolower($tag);
$node->tag = ($this->lowercase) ? $tag_lower : $tag;
// handle optional closing tags
if (isset($this->optional_closing_tags[$tag_lower])) {
// Traverse ancestors to close all optional closing tags
while (isset($this->optional_closing_tags[$tag_lower][strtolower($this->parent->tag)])) {
$this->parent->_[HDOM_INFO_END] = 0;
$this->parent = $this->parent->parent;
}
$node->parent = $this->parent;
}
$guard = 0; // prevent infinity loop
// [0] Space between tag and first attribute
$space = array($this->copy_skip($this->token_blank), '', '');
// attributes
do {
// Everything until the first equal sign should be the attribute name
$name = $this->copy_until($this->token_equal);
if ($name === '' && $this->char !== null && $space[0] === '') {
break;
}
if ($guard === $this->pos) { // Escape infinite loop
$this->char = (++$this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
continue;
}
$guard = $this->pos;
// handle endless '<'
// Out of bounds before the tag ended
if ($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 '<'
// Attributes cannot start after opening tag
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 !== '') { // this is a attribute name
// [1] Whitespace after attribute name
$space[1] = $this->copy_skip($this->token_blank);
$name = $this->restore_noise($name); // might be a noisy name
if ($this->lowercase) { $name = strtolower($name); }
if ($this->char === '=') { // attribute with value
$this->char = (++$this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
$this->parse_attr($node, $name, $space); // get attribute value
} else {
//no value attr: nowrap, checked selected...
$node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO;
$node->attr[$name] = true;
if ($this->char != '>') { $this->char = $this->doc[--$this->pos]; } // prev
}
$node->_[HDOM_INFO_SPACE][] = $space;
// prepare for next attribute
$space = array(
$this->copy_skip($this->token_blank),
'',
''
);
} else { // no more attributes
break;
}
} while ($this->char !== '>' && $this->char !== '/'); // go until the tag ended
$this->link_nodes($node, true);
$node->_[HDOM_INFO_ENDSPACE] = $space[0];
// handle empty tags (i.e. "<div/>")
if ($this->copy_until_char('>') === '/') {
$node->_[HDOM_INFO_ENDSPACE] .= '/';
$node->_[HDOM_INFO_END] = 0;
} else {
// reset parent
if (!isset($this->self_closing_tags[strtolower($node->tag)])) {
$this->parent = $node;
}
}
$this->char = (++$this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
// If it's a BR tag, we need to set it's text to the default text.
// This way when we see it in plaintext, we can generate formatting that the user wants.
// since a br tag never has sub nodes, this works well.
if ($node->tag === 'br') {
$node->_[HDOM_INFO_INNER] = $this->default_br_text;
}
return true;
}
/**
* Parse attribute from current document position
*
* @param object $node Node for the attributes
* @param string $name Name of the current attribute
* @param array $space Array for spacing information
* @return void
*/
protected function parse_attr($node, $name, &$space)
{
// Per sourceforge: http://sourceforge.net/tracker/?func=detail&aid=3061408&group_id=218559&atid=1044037
// If the attribute is already defined inside a tag, only pay attention
// to the first one as opposed to the last one.
// https://stackoverflow.com/a/26341866
if (isset($node->attr[$name])) {
return;
}
// [2] Whitespace between "=" and the value
$space[2] = $this->copy_skip($this->token_blank);
switch ($this->char) {
case '"': // value is anything between double quotes
$node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE;
$this->char = (++$this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
$node->attr[$name] = $this->restore_noise($this->copy_until_char('"'));
$this->char = (++$this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
break;
case '\'': // value is anything between single quotes
$node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_SINGLE;
$this->char = (++$this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
$node->attr[$name] = $this->restore_noise($this->copy_until_char('\''));
$this->char = (++$this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
break;
default: // value is anything until the first space or end tag
$node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO;
$node->attr[$name] = $this->restore_noise($this->copy_until($this->token_attr));
}
// PaperG: Attributes should not have \r or \n in them, that counts as
// html whitespace.
$node->attr[$name] = str_replace("\r", '', $node->attr[$name]);
$node->attr[$name] = str_replace("\n", '', $node->attr[$name]);
// PaperG: If this is a "class" selector, lets get rid of the preceeding
// and trailing space since some people leave it in the multi class case.
if ($name === 'class') {
$node->attr[$name] = trim($node->attr[$name]);
}
}
/**
* Link node to parent node
*
* @param object $node Node to link to parent
* @param bool $is_child True if the node is a child of parent
* @return void
*/
// link node's parent
protected function link_nodes(&$node, $is_child)
{
$node->parent = $this->parent;
$this->parent->nodes[] = $node;
if ($is_child) {
$this->parent->children[] = $node;
}
}
/**
* Add tag as text node to current node
*
* @param string $tag Tag name
* @return bool True on success
*/
protected function as_text_node($tag)
{
$node = new simple_html_dom_node($this);
++$this->cursor;
$node->_[HDOM_INFO_TEXT] = '</' . $tag . '>';
$this->link_nodes($node, false);
$this->char = (++$this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
return true;
}
/**
* Seek from the current document position to the first occurrence of a
* character not defined by the provided string. Update the current document
* position to the new position.
*
* @param string $chars A string containing every allowed character.
* @return void
*/
protected function skip($chars)
{
$this->pos += strspn($this->doc, $chars, $this->pos);
$this->char = ($this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
}
/**
* Copy substring from the current document position to the first occurrence
* of a character not defined by the provided string.
*
* @param string $chars A string containing every allowed character.
* @return string Substring from the current document position to the first
* occurrence of a character not defined by the provided string.
*/
protected function copy_skip($chars)
{
$pos = $this->pos;
$len = strspn($this->doc, $chars, $pos);
$this->pos += $len;
$this->char = ($this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
if ($len === 0) { return ''; }
return substr($this->doc, $pos, $len);
}
/**
* Copy substring from the current document position to the first occurrence
* of any of the provided characters.
*
* @param string $chars A string containing every character to stop at.
* @return string Substring from the current document position to the first
* occurrence of any of the provided characters.
*/
protected function copy_until($chars)
{
$pos = $this->pos;
$len = strcspn($this->doc, $chars, $pos);
$this->pos += $len;
$this->char = ($this->pos < $this->size) ? $this->doc[$this->pos] : null; // next
return substr($this->doc, $pos, $len);
}
/**
* Copy substring from the current document position to the first occurrence
* of the provided string.
*
* @param string $char The string to stop at.
* @return string Substring from the current document position to the first
* occurrence of the provided string.
*/
protected function copy_until_char($char)
{
if ($this->char === null) { return ''; }
if (($pos = strpos($this->doc, $char, $this->pos)) === false) {
$ret = substr($this->doc, $this->pos, $this->size - $this->pos);
$this->char = null;
$this->pos = $this->size;
return $ret;
}
if ($pos === $this->pos) { return ''; }
$pos_old = $this->pos;
$this->char = $this->doc[$pos];
$this->pos = $pos;
return substr($this->doc, $pos_old, $pos - $pos_old);
}
/**
* Remove noise from HTML content
*
* Noise is stored to {@see simple_html_dom::$noise}
*
* @param string $pattern The regex pattern used for finding noise
* @param bool $remove_tag True to remove the entire match. Default is false
* to only remove the captured data.
*/
protected function remove_noise($pattern, $remove_tag = false)
{
global $debug_object;
if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
$count = preg_match_all(
$pattern,
$this->doc,
$matches,
PREG_SET_ORDER | PREG_OFFSET_CAPTURE
);
for ($i = $count - 1; $i > -1; --$i) {
$key = '___noise___' . sprintf('% 5d', count($this->noise) + 1000);
if (is_object($debug_object)) {
$debug_object->debug_log(2, 'key is: ' . $key);
}
$idx = ($remove_tag) ? 0 : 1; // 0 = entire match, 1 = submatch
$this->noise[$key] = $matches[$i][$idx][0];
$this->doc = substr_replace($this->doc, $key, $matches[$i][$idx][1], strlen($matches[$i][$idx][0]));
}
// reset the length of content
$this->size = strlen($this->doc);
if ($this->size > 0) {
$this->char = $this->doc[0];
}
}
/**
* Restore noise to HTML content
*
* Noise is restored from {@see simple_html_dom::$noise}
*
* @param string $text A subset of HTML containing noise
* @return string The same content with noise restored
*/
function restore_noise($text)
{
global $debug_object;
if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
while (($pos = strpos($text, '___noise___')) !== false) {
// Sometimes there is a broken piece of markup, and we don't GET the
// pos+11 etc... token which indicates a problem outside of us...
// todo: "___noise___1000" (or any number with four or more digits)
// in the DOM causes an infinite loop which could be utilized by
// malicious software
if (strlen($text) > $pos + 15) {
$key = '___noise___'
. $text[$pos + 11]
. $text[$pos + 12]
. $text[$pos + 13]
. $text[$pos + 14]
. $text[$pos + 15];
if (is_object($debug_object)) {
$debug_object->debug_log(2, 'located key of: ' . $key);
}
if (isset($this->noise[$key])) {
$text = substr($text, 0, $pos)
. $this->noise[$key]
. substr($text, $pos + 16);
} else {
// do this to prevent an infinite loop.
$text = substr($text, 0, $pos)
. 'UNDEFINED NOISE FOR KEY: '
. $key
. substr($text, $pos + 16);
}
} else {
// There is no valid key being given back to us... We must get
// rid of the ___noise___ or we will have a problem.
$text = substr($text, 0, $pos)
. 'NO NUMERIC NOISE KEY'
. substr($text, $pos + 11);
}
}
return $text;
}
// Sometimes we NEED one of the noise elements.
function search_noise($text)
{
global $debug_object;
if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
foreach($this->noise as $noiseElement) {
if (strpos($noiseElement, $text) !== false) {
return $noiseElement;
}
}
}
function __toString()
{
return $this->root->innertext();
}
function __get($name)
{
switch ($name) {
case 'outertext':
return $this->root->innertext();
case 'innertext':
return $this->root->innertext();
case 'plaintext':
return $this->root->text();
case 'charset':
return $this->_charset;
case 'target_charset':
return $this->_target_charset;
}
}
// camel naming conventions
function childNodes($idx = -1)
{
return $this->root->childNodes($idx);
}
function firstChild()
{
return $this->root->first_child();
}
function lastChild()
{
return $this->root->last_child();
}
function createElement($name, $value = null)
{
return @str_get_html("<$name>$value</$name>")->first_child();
}
function createTextNode($value)
{
return @end(str_get_html($value)->nodes);
}
function getElementById($id)
{
return $this->find("#$id", 0);
}
function getElementsById($id, $idx = null)
{
return $this->find("#$id", $idx);
}
function getElementByTagName($name)
{
return $this->find($name, 0);
}
function getElementsByTagName($name, $idx = -1)
{
return $this->find($name, $idx);
}
function loadFile()
{
$args = func_get_args();
$this->load_file($args);
}
}