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Gestionnaire de fichiers - Editer - /var/softaculous/sitepad/editor/site-data/plugins/pagelayer/lib/pquery/gan_parser_html.php

Arrière
<?php /** * @author Niels A.D. * @author Todd Burry <todd@vanillaforums.com> * @copyright 2010 Niels A.D., 2014 Todd Burry * @license http://opensource.org/licenses/LGPL-2.1 LGPL-2.1 * @package pQuery / namespace pagelayerQuery; /* * Parses a HTML document * * Functionality can be extended by overriding functions or adjusting the tag map. * Document may contain small errors, the parser will try to recover and resume parsing. / class HtmlParserBase extends TokenizerBase { /* * Tag open token, used for "<" / const TOK_TAG_OPEN = 100; /* * Tag close token, used for ">" / const TOK_TAG_CLOSE = 101; /* * Forward slash token, used for "/" / const TOK_SLASH_FORWARD = 103; /* * Backslash token, used for "\" / const TOK_SLASH_BACKWARD = 104; /* * String token, used for attribute values (" and ') / const TOK_STRING = 104; /* * Equals token, used for "=" / const TOK_EQUALS = 105; /* * Sets HTML identifiers, tags/attributes are considered identifiers * @see TokenizerBase::$identifiers * @access private / var $identifiers = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890:-_!?%'; /* * Status of the parser (tagname, closing tag, etc) * @var array / var $status = array(); /* * Map characters to match their tokens * @see TokenizerBase::$custom_char_map * @access private / var $custom_char_map = array( '<' => self::TOK_TAG_OPEN, '>' => self::TOK_TAG_CLOSE, "'" => 'parse_string', '"' => 'parse_string', '/' => self::TOK_SLASH_FORWARD, '\\' => self::TOK_SLASH_BACKWARD, '=' => self::TOK_EQUALS ); function __construct($doc = '', $pos = 0) { parent::__construct($doc, $pos); $this->parse_all(); } #php4 PHP4 class constructor compatibility #function HtmlParserBase($doc = '', $pos = 0) {return $this->__construct($doc, $pos);} #php4e /* Callback functions for certain tags @var array (TAG_NAME => FUNCTION_NAME) @internal Function should be a method in the class @internal Tagname should be lowercase and is everything after <, e.g. "?php" or "!doctype" @access private / var $tag_map = array( '!doctype' => 'parse_doctype', '?' => 'parse_php', '?php' => 'parse_php', '%' => 'parse_asp', 'style' => 'parse_style', 'script' => 'parse_script' ); /* * Parse a HTML string (attributes) * @internal Gets called with ' and " * @return int / protected function parse_string() { if ($this->next_pos($this->doc[$this->pos], false) !== self::TOK_UNKNOWN) { --$this->pos; } return self::TOK_STRING; } /* * Parse text between tags * @internal Gets called between tags, uses {@link $status}[last_pos] * @internal Stores text in {@link $status}[text] / function parse_text() { $len = $this->pos - 1 - $this->status['last_pos']; $this->status['text'] = (($len > 0) ? substr($this->doc, $this->status['last_pos'] + 1, $len) : ''); } /* * Parse comment tags * @internal Gets called with HTML comments ("<!--") * @internal Stores text in {@link $status}[comment] * @return bool / function parse_comment() { $this->pos += 3; if ($this->next_pos('-->', false) !== self::TOK_UNKNOWN) { $this->status['comment'] = $this->getTokenString(1, -1); --$this->pos; } else { $this->status['comment'] = $this->getTokenString(1, -1); $this->pos += 2; } $this->status['last_pos'] = $this->pos; return true; } /* * Parse doctype tag * @internal Gets called with doctype ("<!doctype") * @internal Stores text in {@link $status}[dtd] * @return bool / function parse_doctype() { $start = $this->pos; if ($this->next_search('[>', false) === self::TOK_UNKNOWN) { if ($this->doc[$this->pos] === '[') { if (($this->next_pos(']', false) !== self::TOK_UNKNOWN) \|\| ($this->next_pos('>', false) !== self::TOK_UNKNOWN)) { $this->addError('Invalid doctype'); return false; } } $this->token_start = $start; $this->status['dtd'] = $this->getTokenString(2, -1); $this->status['last_pos'] = $this->pos; return true; } else { $this->addError('Invalid doctype'); return false; } } /* * Parse cdata tag * @internal Gets called with cdata ("<![cdata") * @internal Stores text in {@link $status}[cdata] * @return bool / function parse_cdata() { if ($this->next_pos(']]>', false) === self::TOK_UNKNOWN) { $this->status['cdata'] = $this->getTokenString(9, -1); $this->status['last_pos'] = $this->pos + 2; return true; } else { $this->addError('Invalid cdata tag'); return false; } } /* * Parse php tags * @internal Gets called with php tags ("<?php") * @return bool / function parse_php() { $start = $this->pos; if ($this->next_pos('?>', false) !== self::TOK_UNKNOWN) { $this->pos -= 2; //End of file } $len = $this->pos - 1 - $start; $this->status['text'] = (($len > 0) ? substr($this->doc, $start + 1, $len) : ''); $this->status['last_pos'] = ++$this->pos; return true; } /* * Parse asp tags * @internal Gets called with asp tags ("<%") * @return bool / function parse_asp() { $start = $this->pos; if ($this->next_pos('%>', false) !== self::TOK_UNKNOWN) { $this->pos -= 2; //End of file } $len = $this->pos - 1 - $start; $this->status['text'] = (($len > 0) ? substr($this->doc, $start + 1, $len) : ''); $this->status['last_pos'] = ++$this->pos; return true; } /* * Parse style tags * @internal Gets called with php tags ("<style>") * @return bool / function parse_style() { if ($this->parse_attributes() && ($this->token === self::TOK_TAG_CLOSE) && ($start = $this->pos) && ($this->next_pos('</style>', false) === self::TOK_UNKNOWN)) { $len = $this->pos - 1 - $start; $this->status['text'] = (($len > 0) ? substr($this->doc, $start + 1, $len) : ''); $this->pos += 7; $this->status['last_pos'] = $this->pos; return true; } else { $this->addError('No end for style tag found'); return false; } } /* * Parse script tags * @internal Gets called with php tags ("<script>") * @return bool / function parse_script() { if ($this->parse_attributes() && ($this->token === self::TOK_TAG_CLOSE) && ($start = $this->pos) && ($this->next_pos('</script>', false) === self::TOK_UNKNOWN)) { $len = $this->pos - 1 - $start; $this->status['text'] = (($len > 0) ? substr($this->doc, $start + 1, $len) : ''); $this->pos += 8; $this->status['last_pos'] = $this->pos; return true; } else { $this->addError('No end for script tag found'); return false; } } /* * Parse conditional tags (+ all conditional tags inside) * @internal Gets called with IE conditionals ("<![if]" and "<!--[if]") * @internal Stores condition in {@link $status}[tag_condition] * @return bool / function parse_conditional() { if ($this->status['closing_tag']) { $this->pos += 8; } else { $this->pos += (($this->status['comment']) ? 5 : 3); if ($this->next_pos(']', false) !== self::TOK_UNKNOWN) { $this->addError('"]" not found in conditional tag'); return false; } $this->status['tag_condition'] = $this->getTokenString(0, -1); } if ($this->next_no_whitespace() !== self::TOK_TAG_CLOSE) { $this->addError('No ">" tag found 2 for conditional tag'); return false; } if ($this->status['comment']) { $this->status['last_pos'] = $this->pos; if ($this->next_pos('-->', false) !== self::TOK_UNKNOWN) { $this->addError('No ending tag found for conditional tag'); $this->pos = $this->size - 1; $len = $this->pos - 1 - $this->status['last_pos']; $this->status['text'] = (($len > 0) ? substr($this->doc, $this->status['last_pos'] + 1, $len) : ''); } else { $len = $this->pos - 10 - $this->status['last_pos']; $this->status['text'] = (($len > 0) ? substr($this->doc, $this->status['last_pos'] + 1, $len) : ''); $this->pos += 2; } } $this->status['last_pos'] = $this->pos; return true; } /* * Parse attributes (names + value) * @internal Stores attributes in {@link $status}[attributes] (array(ATTR => VAL)) * @return bool / function parse_attributes() { $this->status['attributes'] = array(); while ($this->next_no_whitespace() === self::TOK_IDENTIFIER) { $attr = $this->getTokenString(); if (($attr === '?') \|\| ($attr === '%')) { //Probably closing tags break; } if ($this->next_no_whitespace() === self::TOK_EQUALS) { if ($this->next_no_whitespace() === self::TOK_STRING) { $val = $this->getTokenString(1, -1); } else { $this->token_start = $this->pos; if (!isset($stop)) { $stop = $this->whitespace; $stop['<'] = true; $stop['>'] = true; } while ((++$this->pos < $this->size) && (!isset($stop[$this->doc[$this->pos]]))) { // Do nothing. } --$this->pos; $val = $this->getTokenString(); if (trim($val) === '') { $this->addError('Invalid attribute value'); return false; } } } else { $val = $attr; $this->pos = (($this->token_start) ? $this->token_start : $this->pos) - 1; } $this->status['attributes'][$attr] = $val; } return true; } /* * Default callback for tags * @internal Gets called after the tagname (<htmlENTERS_HERE attribute="value">) * @return bool / function parse_tag_default() { if ($this->status['closing_tag']) { $this->status['attributes'] = array(); $this->next_no_whitespace(); } else { if (!$this->parse_attributes()) { return false; } } if ($this->token !== self::TOK_TAG_CLOSE) { if ($this->token === self::TOK_SLASH_FORWARD) { $this->status['self_close'] = true; $this->next(); } elseif ((($this->status['tag_name'][0] === '?') && ($this->doc[$this->pos] === '?')) \|\| (($this->status['tag_name'][0] === '%') && ($this->doc[$this->pos] === '%'))) { $this->status['self_close'] = true; $this->pos++; if (isset($this->char_map[$this->doc[$this->pos]]) && (!is_string($this->char_map[$this->doc[$this->pos]]))) { $this->token = $this->char_map[$this->doc[$this->pos]]; } else { $this->token = self::TOK_UNKNOWN; } }/ else { $this->status['self_close'] = false; }/ } if ($this->token !== self::TOK_TAG_CLOSE) { $this->addError('Expected ">", but found "'.$this->getTokenString().'"'); if ($this->next_pos('>', false) !== self::TOK_UNKNOWN) { $this->addError('No ">" tag found for "'.$this->status['tag_name'].'" tag'); return false; } } return true; } /* * Parse tag * @internal Gets called after opening tag (<ENTERS_HEREhtml attribute="value">) * @internal Stores information about the tag in {@link $status} (comment, closing_tag, tag_name) * @return bool / function parse_tag() { $start = $this->pos; $this->status['self_close'] = false; $this->parse_text(); $next = (($this->pos + 1) < $this->size) ? $this->doc[$this->pos + 1] : ''; if ($next === '!') { $this->status['closing_tag'] = false; if (substr($this->doc, $this->pos + 2, 2) === '--') { $this->status['comment'] = true; if (($this->doc[$this->pos + 4] === '[') && (strcasecmp(substr($this->doc, $this->pos + 5, 2), 'if') === 0)) { return $this->parse_comment(); } else { return $this->parse_comment(); } } else { $this->status['comment'] = false; if ($this->doc[$this->pos + 2] === '[') { if (strcasecmp(substr($this->doc, $this->pos + 3, 2), 'if') === 0) { return $this->parse_conditional(); } elseif (strcasecmp(substr($this->doc, $this->pos + 3, 5), 'endif') === 0) { $this->status['closing_tag'] = true; return $this->parse_conditional(); } elseif (strcasecmp(substr($this->doc, $this->pos + 3, 5), 'cdata') === 0) { return $this->parse_cdata(); } } } } elseif ($next === '/') { $this->status['closing_tag'] = true; ++$this->pos; } else { $this->status['closing_tag'] = false; } if ($this->next() !== self::TOK_IDENTIFIER) { $this->addError('Tagname expected'); //if ($this->next_pos('>', false) === self::TOK_UNKNOWN) { $this->status['last_pos'] = $start - 1; return true; //} else { // return false; //} } $tag = $this->getTokenString(); $this->status['tag_name'] = $tag; $tag = strtolower($tag); if (isset($this->tag_map[$tag])) { $res = $this->{$this->tag_map[$tag]}(); } else { $res = $this->parse_tag_default(); } $this->status['last_pos'] = $this->pos; return $res; } /* * Parse full document * @return bool / function parse_all() { $this->errors = array(); $this->status['last_pos'] = -1; if (($this->token === self::TOK_TAG_OPEN) \|\| ($this->next_pos('<', false) === self::TOK_UNKNOWN)) { do { if (!$this->parse_tag()) { return false; } } while ($this->next_pos('<') !== self::TOK_NULL); } $this->pos = $this->size; $this->parse_text(); return true; } } /* * Parses a HTML document into a HTML DOM / class HtmlParser extends HtmlParserBase { /* * Root object * @internal If string, then it will create a new instance as root * @var DomNode / var $root = 'pagelayerQuery\\DomNode'; /* * Current parsing hierarchy * @internal Root is always at index 0, current tag is at the end of the array * @var array * @access private / var $hierarchy = array(); /* * Tags that don't need closing tags * @var array * @access private / var $tags_selfclose = array( 'area' => true, 'base' => true, 'basefont' => true, 'br' => true, 'col' => true, 'command' => true, 'embed' => true, 'frame' => true, 'hr' => true, 'img' => true, 'input' => true, 'ins' => true, 'keygen' => true, 'link' => true, 'meta' => true, 'param' => true, 'source' => true, 'track' => true, 'wbr' => true ); /* * Class constructor * @param string $doc Document to be tokenized * @param int $pos Position to start parsing * @param DomNode $root Root node, null to auto create / function __construct($doc = '', $pos = 0, $root = null) { if ($root === null) { $root = new $this->root('~root~', null); } $this->root =& $root; parent::__construct($doc, $pos); } #php4 PHP4 class constructor compatibility #function HtmlParser($doc = '', $pos = 0, $root = null) {return $this->__construct($doc, $pos, $root);} #php4e /* * Class magic invoke method, performs {@link select()} * @return array * @access private / function __invoke($query = '') { return $this->select($query); } /** * Class magic toString method, performs {@link DomNode::toString()} * @return string * @access private / function __toString() { return $this->root->getInnerText(); } /* * Performs a css select query on the root node * @see DomNode::select() * @return array / function select($query = '', $index = false, $recursive = true, $check_self = false) { return $this->root->select($query, $index, $recursive, $check_self); } /** * Updates the current hierarchy status and checks for * correct opening/closing of tags * @param bool $self_close Is current tag self closing? Null to use {@link tags_selfclose} * @internal This is were most of the nodes get added * @access private / protected function parse_hierarchy($self_close = null) { if ($self_close === null) { $this->status['self_close'] = ($self_close = isset($this->tags_selfclose[strtolower($this->status['tag_name'])])); } if ($self_close) { if ($this->status['closing_tag']) { //$c = end($this->hierarchy)->children $c = $this->hierarchy[count($this->hierarchy) - 1]->children; $found = false; for ($count = count($c), $i = $count - 1; $i >= 0; $i--) { if (strcasecmp($c[$i]->tag, $this->status['tag_name']) === 0) { for($ii = $i + 1; $ii < $count; $ii++) { $index = null; //Needs to be passed by ref $c[$i + 1]->changeParent($c[$i], $index); } $c[$i]->self_close = false; $found = true; break; } } if (!$found) { $this->addError('Closing tag "'.$this->status['tag_name'].'" which is not open'); } } elseif ($this->status['tag_name'][0] === '?') { //end($this->hierarchy)->addXML($this->status['tag_name'], '', $this->status['attributes']); $index = null; //Needs to be passed by ref $this->hierarchy[count($this->hierarchy) - 1]->addXML($this->status['tag_name'], '', $this->status['attributes'], $index); } elseif ($this->status['tag_name'][0] === '%') { //end($this->hierarchy)->addASP($this->status['tag_name'], '', $this->status['attributes']); $index = null; //Needs to be passed by ref $this->hierarchy[count($this->hierarchy) - 1]->addASP($this->status['tag_name'], '', $this->status['attributes'], $index); } else { //end($this->hierarchy)->addChild($this->status); $index = null; //Needs to be passed by ref $this->hierarchy[count($this->hierarchy) - 1]->addChild($this->status, $index); } } elseif ($this->status['closing_tag']) { $found = false; for ($count = count($this->hierarchy), $i = $count - 1; $i >= 0; $i--) { if (strcasecmp($this->hierarchy[$i]->tag, $this->status['tag_name']) === 0) { for($ii = ($count - $i - 1); $ii >= 0; $ii--) { $e = array_pop($this->hierarchy); if ($ii > 0) { $this->addError('Closing tag "'.$this->status['tag_name'].'" while "'.$e->tag.'" is not closed yet'); } } $found = true; break; } } if (!$found) { $this->addError('Closing tag "'.$this->status['tag_name'].'" which is not open'); } } else { //$this->hierarchy[] = end($this->hierarchy)->addChild($this->status); $index = null; //Needs to be passed by ref $this->hierarchy[] = $this->hierarchy[count($this->hierarchy) - 1]->addChild($this->status, $index); } } function parse_cdata() { if (!parent::parse_cdata()) {return false;} //end($this->hierarchy)->addCDATA($this->status['cdata']); $index = null; //Needs to be passed by ref $this->hierarchy[count($this->hierarchy) - 1]->addCDATA($this->status['cdata'], $index); return true; } function parse_comment() { if (!parent::parse_comment()) {return false;} //end($this->hierarchy)->addComment($this->status['comment']); $index = null; //Needs to be passed by ref $this->hierarchy[count($this->hierarchy) - 1]->addComment($this->status['comment'], $index); return true; } function parse_conditional() { if (!parent::parse_conditional()) {return false;} if ($this->status['comment']) { //$e = end($this->hierarchy)->addConditional($this->status['tag_condition'], true); $index = null; //Needs to be passed by ref $e = $this->hierarchy[count($this->hierarchy) - 1]->addConditional($this->status['tag_condition'], true, $index); if ($this->status['text'] !== '') { $index = null; //Needs to be passed by ref $e->addText($this->status['text'], $index); } } else { if ($this->status['closing_tag']) { $this->parse_hierarchy(false); } else { //$this->hierarchy[] = end($this->hierarchy)->addConditional($this->status['tag_condition'], false); $index = null; //Needs to be passed by ref $this->hierarchy[] = $this->hierarchy[count($this->hierarchy) - 1]->addConditional($this->status['tag_condition'], false, $index); } } return true; } function parse_doctype() { if (!parent::parse_doctype()) {return false;} //end($this->hierarchy)->addDoctype($this->status['dtd']); $index = null; //Needs to be passed by ref $this->hierarchy[count($this->hierarchy) - 1]->addDoctype($this->status['dtd'], $index); return true; } function parse_php() { if (!parent::parse_php()) {return false;} //end($this->hierarchy)->addXML('php', $this->status['text']); $index = null; //Needs to be passed by ref $this->hierarchy[count($this->hierarchy) - 1]->addXML('php', $this->status['text'], $index); return true; } function parse_asp() { if (!parent::parse_asp()) {return false;} //end($this->hierarchy)->addASP('', $this->status['text']); $index = null; //Needs to be passed by ref $this->hierarchy[count($this->hierarchy) - 1]->addASP('', $this->status['text'], $index); return true; } function parse_script() { if (!parent::parse_script()) {return false;} //$e = end($this->hierarchy)->addChild($this->status); $index = null; //Needs to be passed by ref $e = $this->hierarchy[count($this->hierarchy) - 1]->addChild($this->status, $index); if ($this->status['text'] !== '') { $index = null; //Needs to be passed by ref $e->addText($this->status['text'], $index); } return true; } function parse_style() { if (!parent::parse_style()) {return false;} //$e = end($this->hierarchy)->addChild($this->status); $index = null; //Needs to be passed by ref $e = $this->hierarchy[count($this->hierarchy) - 1]->addChild($this->status, $index); if ($this->status['text'] !== '') { $index = null; //Needs to be passed by ref $e->addText($this->status['text'], $index); } return true; } function parse_tag_default() { if (!parent::parse_tag_default()) {return false;} $this->parse_hierarchy(($this->status['self_close']) ? true : null); return true; } function parse_text() { parent::parse_text(); if ($this->status['text'] !== '') { //end($this->hierarchy)->addText($this->status['text']); $index = null; //Needs to be passed by ref $this->hierarchy[count($this->hierarchy) - 1]->addText($this->status['text'], $index); } } function parse_all() { $this->hierarchy = array(&$this->root); return ((parent::parse_all()) ? $this->root : false); } } /* * HTML5 specific parser (adds support for omittable closing tags) / class Html5Parser extends HtmlParser { /* * Tags with ommitable closing tags * @var array array('tag2' => 'tag1') will close tag1 if following (not child) tag is tag2 * @access private */ var $tags_optional_close = array( //Current tag => Previous tag 'li' => array('li' => true), 'dt' => array('dt' => true, 'dd' => true), 'dd' => array('dt' => true, 'dd' => true), 'address' => array('p' => true), 'article' => array('p' => true), 'aside' => array('p' => true), 'blockquote' => array('p' => true), 'dir' => array('p' => true), 'div' => array('p' => true), 'dl' => array('p' => true), 'fieldset' => array('p' => true), 'footer' => array('p' => true), 'form' => array('p' => true), 'h1' => array('p' => true), 'h2' => array('p' => true), 'h3' => array('p' => true), 'h4' => array('p' => true), 'h5' => array('p' => true), 'h6' => array('p' => true), 'header' => array('p' => true), 'hgroup' => array('p' => true), 'hr' => array('p' => true), 'menu' => array('p' => true), 'nav' => array('p' => true), 'ol' => array('p' => true), 'p' => array('p' => true), 'pre' => array('p' => true), 'section' => array('p' => true), 'table' => array('p' => true), 'ul' => array('p' => true), 'rt' => array('rt' => true, 'rp' => true), 'rp' => array('rt' => true, 'rp' => true), 'optgroup' => array('optgroup' => true, 'option' => true), 'option' => array('option'), 'tbody' => array('thread' => true, 'tbody' => true, 'tfoot' => true), 'tfoot' => array('thread' => true, 'tbody' => true), 'tr' => array('tr' => true), 'td' => array('td' => true, 'th' => true), 'th' => array('td' => true, 'th' => true), 'body' => array('head' => true) ); protected function parse_hierarchy($self_close = null) { $tag_curr = strtolower($this->status['tag_name']); if ($self_close === null) { $this->status['self_close'] = ($self_close = isset($this->tags_selfclose[$tag_curr])); } if (! ($self_close \|\| $this->status['closing_tag'])) { //$tag_prev = strtolower(end($this->hierarchy)->tag); $tag_prev = strtolower($this->hierarchy[count($this->hierarchy) - 1]->tag); if (isset($this->tags_optional_close[$tag_curr]) && isset($this->tags_optional_close[$tag_curr][$tag_prev])) { array_pop($this->hierarchy); } } return parent::parse_hierarchy($self_close); } } ?>