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 * @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 */ 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
text used instead of
tags when returning text */ defined('DEFAULT_BR_TEXT') || define('DEFAULT_BR_TEXT', "\r\n"); /** The default text used instead of 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 .= '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('', '', $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) // php 低版本不支持着函数返回值直接取值 // $node_id = explode(' ', trim($node->attr['id']))[0]; $node_ids = explode(' ', trim($node->attr['id'])); $node_id = $node_ids[0]; if($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 $selector_string CSS selector string * @return array List of CSS selectors. The format depends on the type of * selector: * * ```php * * array( // list of selectors (each separated by a comma), i.e. 'img, p, div' * array( // list of combinator selectors, i.e. 'img > p > div' * array( // selector element * [0], // (string) The element tag * [1], // (string) The element id * [2], // (array) The element classes * [3], // (array>) The list of attributes, each * // with four elements: name, expression, value, inverted * [4] // (string) The selector combinator (' ' | '>' | '+' | '~') * ) * ) * ) * ``` * * @link https://www.w3.org/TR/selectors/#compound Compound selector */ protected function parse_selector($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 * 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. "") or the end of an opening tag (">" i.e. * "") * * @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. "") 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
elements * * @var string */ protected $default_br_text = ''; /** * Suffix for 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 *

• First Item
• Second Item

* ``` * *

• First Item
• Second Item

* * ```html *

• First Item
• Second Item

* ``` * *

• First Item
• Second Item

* * @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