commitall
This commit is contained in:
Sampanna Rimal
338
vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/DOMLex.php
vendored
Normal file
338
vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/DOMLex.php
vendored
Normal file
@ -0,0 +1,338 @@
|
||||
<?php
|
||||
|
||||
/**
|
||||
* Parser that uses PHP 5's DOM extension (part of the core).
|
||||
*
|
||||
* In PHP 5, the DOM XML extension was revamped into DOM and added to the core.
|
||||
* It gives us a forgiving HTML parser, which we use to transform the HTML
|
||||
* into a DOM, and then into the tokens. It is blazingly fast (for large
|
||||
* documents, it performs twenty times faster than
|
||||
* HTMLPurifier_Lexer_DirectLex,and is the default choice for PHP 5.
|
||||
*
|
||||
* @note Any empty elements will have empty tokens associated with them, even if
|
||||
* this is prohibited by the spec. This is cannot be fixed until the spec
|
||||
* comes into play.
|
||||
*
|
||||
* @note PHP's DOM extension does not actually parse any entities, we use
|
||||
* our own function to do that.
|
||||
*
|
||||
* @warning DOM tends to drop whitespace, which may wreak havoc on indenting.
|
||||
* If this is a huge problem, due to the fact that HTML is hand
|
||||
* edited and you are unable to get a parser cache that caches the
|
||||
* the output of HTML Purifier while keeping the original HTML lying
|
||||
* around, you may want to run Tidy on the resulting output or use
|
||||
* HTMLPurifier_DirectLex
|
||||
*/
|
||||
|
||||
class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
|
||||
{
|
||||
|
||||
/**
|
||||
* @type HTMLPurifier_TokenFactory
|
||||
*/
|
||||
private $factory;
|
||||
|
||||
public function __construct()
|
||||
{
|
||||
// setup the factory
|
||||
parent::__construct();
|
||||
$this->factory = new HTMLPurifier_TokenFactory();
|
||||
}
|
||||
|
||||
/**
|
||||
* @param string $html
|
||||
* @param HTMLPurifier_Config $config
|
||||
* @param HTMLPurifier_Context $context
|
||||
* @return HTMLPurifier_Token[]
|
||||
*/
|
||||
public function tokenizeHTML($html, $config, $context)
|
||||
{
|
||||
$html = $this->normalize($html, $config, $context);
|
||||
|
||||
// attempt to armor stray angled brackets that cannot possibly
|
||||
// form tags and thus are probably being used as emoticons
|
||||
if ($config->get('Core.AggressivelyFixLt')) {
|
||||
$char = '[^a-z!\/]';
|
||||
$comment = "/<!--(.*?)(-->|\z)/is";
|
||||
$html = preg_replace_callback($comment, array($this, 'callbackArmorCommentEntities'), $html);
|
||||
do {
|
||||
$old = $html;
|
||||
$html = preg_replace("/<($char)/i", '<\\1', $html);
|
||||
} while ($html !== $old);
|
||||
$html = preg_replace_callback($comment, array($this, 'callbackUndoCommentSubst'), $html); // fix comments
|
||||
}
|
||||
|
||||
// preprocess html, essential for UTF-8
|
||||
$html = $this->wrapHTML($html, $config, $context);
|
||||
|
||||
$doc = new DOMDocument();
|
||||
$doc->encoding = 'UTF-8'; // theoretically, the above has this covered
|
||||
|
||||
$options = 0;
|
||||
if ($config->get('Core.AllowParseManyTags') && defined('LIBXML_PARSEHUGE')) {
|
||||
$options |= LIBXML_PARSEHUGE;
|
||||
}
|
||||
|
||||
set_error_handler(array($this, 'muteErrorHandler'));
|
||||
// loadHTML() fails on PHP 5.3 when second parameter is given
|
||||
if ($options) {
|
||||
$doc->loadHTML($html, $options);
|
||||
} else {
|
||||
$doc->loadHTML($html);
|
||||
}
|
||||
restore_error_handler();
|
||||
|
||||
$body = $doc->getElementsByTagName('html')->item(0)-> // <html>
|
||||
getElementsByTagName('body')->item(0); // <body>
|
||||
|
||||
$div = $body->getElementsByTagName('div')->item(0); // <div>
|
||||
$tokens = array();
|
||||
$this->tokenizeDOM($div, $tokens, $config);
|
||||
// If the div has a sibling, that means we tripped across
|
||||
// a premature </div> tag. So remove the div we parsed,
|
||||
// and then tokenize the rest of body. We can't tokenize
|
||||
// the sibling directly as we'll lose the tags in that case.
|
||||
if ($div->nextSibling) {
|
||||
$body->removeChild($div);
|
||||
$this->tokenizeDOM($body, $tokens, $config);
|
||||
}
|
||||
return $tokens;
|
||||
}
|
||||
|
||||
/**
|
||||
* Iterative function that tokenizes a node, putting it into an accumulator.
|
||||
* To iterate is human, to recurse divine - L. Peter Deutsch
|
||||
* @param DOMNode $node DOMNode to be tokenized.
|
||||
* @param HTMLPurifier_Token[] $tokens Array-list of already tokenized tokens.
|
||||
* @return HTMLPurifier_Token of node appended to previously passed tokens.
|
||||
*/
|
||||
protected function tokenizeDOM($node, &$tokens, $config)
|
||||
{
|
||||
$level = 0;
|
||||
$nodes = array($level => new HTMLPurifier_Queue(array($node)));
|
||||
$closingNodes = array();
|
||||
do {
|
||||
while (!$nodes[$level]->isEmpty()) {
|
||||
$node = $nodes[$level]->shift(); // FIFO
|
||||
$collect = $level > 0 ? true : false;
|
||||
$needEndingTag = $this->createStartNode($node, $tokens, $collect, $config);
|
||||
if ($needEndingTag) {
|
||||
$closingNodes[$level][] = $node;
|
||||
}
|
||||
if ($node->childNodes && $node->childNodes->length) {
|
||||
$level++;
|
||||
$nodes[$level] = new HTMLPurifier_Queue();
|
||||
foreach ($node->childNodes as $childNode) {
|
||||
$nodes[$level]->push($childNode);
|
||||
}
|
||||
}
|
||||
}
|
||||
$level--;
|
||||
if ($level && isset($closingNodes[$level])) {
|
||||
while ($node = array_pop($closingNodes[$level])) {
|
||||
$this->createEndNode($node, $tokens);
|
||||
}
|
||||
}
|
||||
} while ($level > 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* Portably retrieve the tag name of a node; deals with older versions
|
||||
* of libxml like 2.7.6
|
||||
* @param DOMNode $node
|
||||
*/
|
||||
protected function getTagName($node)
|
||||
{
|
||||
if (isset($node->tagName)) {
|
||||
return $node->tagName;
|
||||
} else if (isset($node->nodeName)) {
|
||||
return $node->nodeName;
|
||||
} else if (isset($node->localName)) {
|
||||
return $node->localName;
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Portably retrieve the data of a node; deals with older versions
|
||||
* of libxml like 2.7.6
|
||||
* @param DOMNode $node
|
||||
*/
|
||||
protected function getData($node)
|
||||
{
|
||||
if (isset($node->data)) {
|
||||
return $node->data;
|
||||
} else if (isset($node->nodeValue)) {
|
||||
return $node->nodeValue;
|
||||
} else if (isset($node->textContent)) {
|
||||
return $node->textContent;
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* @param DOMNode $node DOMNode to be tokenized.
|
||||
* @param HTMLPurifier_Token[] $tokens Array-list of already tokenized tokens.
|
||||
* @param bool $collect Says whether or start and close are collected, set to
|
||||
* false at first recursion because it's the implicit DIV
|
||||
* tag you're dealing with.
|
||||
* @return bool if the token needs an endtoken
|
||||
* @todo data and tagName properties don't seem to exist in DOMNode?
|
||||
*/
|
||||
protected function createStartNode($node, &$tokens, $collect, $config)
|
||||
{
|
||||
// intercept non element nodes. WE MUST catch all of them,
|
||||
// but we're not getting the character reference nodes because
|
||||
// those should have been preprocessed
|
||||
if ($node->nodeType === XML_TEXT_NODE) {
|
||||
$data = $this->getData($node); // Handle variable data property
|
||||
if ($data !== null) {
|
||||
$tokens[] = $this->factory->createText($data);
|
||||
}
|
||||
return false;
|
||||
} elseif ($node->nodeType === XML_CDATA_SECTION_NODE) {
|
||||
// undo libxml's special treatment of <script> and <style> tags
|
||||
$last = end($tokens);
|
||||
$data = $node->data;
|
||||
// (note $node->tagname is already normalized)
|
||||
if ($last instanceof HTMLPurifier_Token_Start && ($last->name == 'script' || $last->name == 'style')) {
|
||||
$new_data = trim($data);
|
||||
if (substr($new_data, 0, 4) === '<!--') {
|
||||
$data = substr($new_data, 4);
|
||||
if (substr($data, -3) === '-->') {
|
||||
$data = substr($data, 0, -3);
|
||||
} else {
|
||||
// Highly suspicious! Not sure what to do...
|
||||
}
|
||||
}
|
||||
}
|
||||
$tokens[] = $this->factory->createText($this->parseText($data, $config));
|
||||
return false;
|
||||
} elseif ($node->nodeType === XML_COMMENT_NODE) {
|
||||
// this is code is only invoked for comments in script/style in versions
|
||||
// of libxml pre-2.6.28 (regular comments, of course, are still
|
||||
// handled regularly)
|
||||
$tokens[] = $this->factory->createComment($node->data);
|
||||
return false;
|
||||
} elseif ($node->nodeType !== XML_ELEMENT_NODE) {
|
||||
// not-well tested: there may be other nodes we have to grab
|
||||
return false;
|
||||
}
|
||||
$attr = $node->hasAttributes() ? $this->transformAttrToAssoc($node->attributes) : array();
|
||||
$tag_name = $this->getTagName($node); // Handle variable tagName property
|
||||
if (empty($tag_name)) {
|
||||
return (bool) $node->childNodes->length;
|
||||
}
|
||||
// We still have to make sure that the element actually IS empty
|
||||
if (!$node->childNodes->length) {
|
||||
if ($collect) {
|
||||
$tokens[] = $this->factory->createEmpty($tag_name, $attr);
|
||||
}
|
||||
return false;
|
||||
} else {
|
||||
if ($collect) {
|
||||
$tokens[] = $this->factory->createStart($tag_name, $attr);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @param DOMNode $node
|
||||
* @param HTMLPurifier_Token[] $tokens
|
||||
*/
|
||||
protected function createEndNode($node, &$tokens)
|
||||
{
|
||||
$tag_name = $this->getTagName($node); // Handle variable tagName property
|
||||
$tokens[] = $this->factory->createEnd($tag_name);
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts a DOMNamedNodeMap of DOMAttr objects into an assoc array.
|
||||
*
|
||||
* @param DOMNamedNodeMap $node_map DOMNamedNodeMap of DOMAttr objects.
|
||||
* @return array Associative array of attributes.
|
||||
*/
|
||||
protected function transformAttrToAssoc($node_map)
|
||||
{
|
||||
// NamedNodeMap is documented very well, so we're using undocumented
|
||||
// features, namely, the fact that it implements Iterator and
|
||||
// has a ->length attribute
|
||||
if ($node_map->length === 0) {
|
||||
return array();
|
||||
}
|
||||
$array = array();
|
||||
foreach ($node_map as $attr) {
|
||||
$array[$attr->name] = $attr->value;
|
||||
}
|
||||
return $array;
|
||||
}
|
||||
|
||||
/**
|
||||
* An error handler that mutes all errors
|
||||
* @param int $errno
|
||||
* @param string $errstr
|
||||
*/
|
||||
public function muteErrorHandler($errno, $errstr)
|
||||
{
|
||||
}
|
||||
|
||||
/**
|
||||
* Callback function for undoing escaping of stray angled brackets
|
||||
* in comments
|
||||
* @param array $matches
|
||||
* @return string
|
||||
*/
|
||||
public function callbackUndoCommentSubst($matches)
|
||||
{
|
||||
return '<!--' . strtr($matches[1], array('&' => '&', '<' => '<')) . $matches[2];
|
||||
}
|
||||
|
||||
/**
|
||||
* Callback function that entity-izes ampersands in comments so that
|
||||
* callbackUndoCommentSubst doesn't clobber them
|
||||
* @param array $matches
|
||||
* @return string
|
||||
*/
|
||||
public function callbackArmorCommentEntities($matches)
|
||||
{
|
||||
return '<!--' . str_replace('&', '&', $matches[1]) . $matches[2];
|
||||
}
|
||||
|
||||
/**
|
||||
* Wraps an HTML fragment in the necessary HTML
|
||||
* @param string $html
|
||||
* @param HTMLPurifier_Config $config
|
||||
* @param HTMLPurifier_Context $context
|
||||
* @return string
|
||||
*/
|
||||
protected function wrapHTML($html, $config, $context, $use_div = true)
|
||||
{
|
||||
$def = $config->getDefinition('HTML');
|
||||
$ret = '';
|
||||
|
||||
if (!empty($def->doctype->dtdPublic) || !empty($def->doctype->dtdSystem)) {
|
||||
$ret .= '<!DOCTYPE html ';
|
||||
if (!empty($def->doctype->dtdPublic)) {
|
||||
$ret .= 'PUBLIC "' . $def->doctype->dtdPublic . '" ';
|
||||
}
|
||||
if (!empty($def->doctype->dtdSystem)) {
|
||||
$ret .= '"' . $def->doctype->dtdSystem . '" ';
|
||||
}
|
||||
$ret .= '>';
|
||||
}
|
||||
|
||||
$ret .= '<html><head>';
|
||||
$ret .= '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
|
||||
// No protection if $html contains a stray </div>!
|
||||
$ret .= '</head><body>';
|
||||
if ($use_div) $ret .= '<div>';
|
||||
$ret .= $html;
|
||||
if ($use_div) $ret .= '</div>';
|
||||
$ret .= '</body></html>';
|
||||
return $ret;
|
||||
}
|
||||
}
|
||||
|
||||
// vim: et sw=4 sts=4
|
||||
539
vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/DirectLex.php
vendored
Normal file
539
vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/DirectLex.php
vendored
Normal file
@ -0,0 +1,539 @@
|
||||
<?php
|
||||
|
||||
/**
|
||||
* Our in-house implementation of a parser.
|
||||
*
|
||||
* A pure PHP parser, DirectLex has absolutely no dependencies, making
|
||||
* it a reasonably good default for PHP4. Written with efficiency in mind,
|
||||
* it can be four times faster than HTMLPurifier_Lexer_PEARSax3, although it
|
||||
* pales in comparison to HTMLPurifier_Lexer_DOMLex.
|
||||
*
|
||||
* @todo Reread XML spec and document differences.
|
||||
*/
|
||||
class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
|
||||
{
|
||||
/**
|
||||
* @type bool
|
||||
*/
|
||||
public $tracksLineNumbers = true;
|
||||
|
||||
/**
|
||||
* Whitespace characters for str(c)spn.
|
||||
* @type string
|
||||
*/
|
||||
protected $_whitespace = "\x20\x09\x0D\x0A";
|
||||
|
||||
/**
|
||||
* Callback function for script CDATA fudge
|
||||
* @param array $matches, in form of array(opening tag, contents, closing tag)
|
||||
* @return string
|
||||
*/
|
||||
protected function scriptCallback($matches)
|
||||
{
|
||||
return $matches[1] . htmlspecialchars($matches[2], ENT_COMPAT, 'UTF-8') . $matches[3];
|
||||
}
|
||||
|
||||
/**
|
||||
* @param String $html
|
||||
* @param HTMLPurifier_Config $config
|
||||
* @param HTMLPurifier_Context $context
|
||||
* @return array|HTMLPurifier_Token[]
|
||||
*/
|
||||
public function tokenizeHTML($html, $config, $context)
|
||||
{
|
||||
// special normalization for script tags without any armor
|
||||
// our "armor" heurstic is a < sign any number of whitespaces after
|
||||
// the first script tag
|
||||
if ($config->get('HTML.Trusted')) {
|
||||
$html = preg_replace_callback(
|
||||
'#(<script[^>]*>)(\s*[^<].+?)(</script>)#si',
|
||||
array($this, 'scriptCallback'),
|
||||
$html
|
||||
);
|
||||
}
|
||||
|
||||
$html = $this->normalize($html, $config, $context);
|
||||
|
||||
$cursor = 0; // our location in the text
|
||||
$inside_tag = false; // whether or not we're parsing the inside of a tag
|
||||
$array = array(); // result array
|
||||
|
||||
// This is also treated to mean maintain *column* numbers too
|
||||
$maintain_line_numbers = $config->get('Core.MaintainLineNumbers');
|
||||
|
||||
if ($maintain_line_numbers === null) {
|
||||
// automatically determine line numbering by checking
|
||||
// if error collection is on
|
||||
$maintain_line_numbers = $config->get('Core.CollectErrors');
|
||||
}
|
||||
|
||||
if ($maintain_line_numbers) {
|
||||
$current_line = 1;
|
||||
$current_col = 0;
|
||||
$length = strlen($html);
|
||||
} else {
|
||||
$current_line = false;
|
||||
$current_col = false;
|
||||
$length = false;
|
||||
}
|
||||
$context->register('CurrentLine', $current_line);
|
||||
$context->register('CurrentCol', $current_col);
|
||||
$nl = "\n";
|
||||
// how often to manually recalculate. This will ALWAYS be right,
|
||||
// but it's pretty wasteful. Set to 0 to turn off
|
||||
$synchronize_interval = $config->get('Core.DirectLexLineNumberSyncInterval');
|
||||
|
||||
$e = false;
|
||||
if ($config->get('Core.CollectErrors')) {
|
||||
$e =& $context->get('ErrorCollector');
|
||||
}
|
||||
|
||||
// for testing synchronization
|
||||
$loops = 0;
|
||||
|
||||
while (++$loops) {
|
||||
// $cursor is either at the start of a token, or inside of
|
||||
// a tag (i.e. there was a < immediately before it), as indicated
|
||||
// by $inside_tag
|
||||
|
||||
if ($maintain_line_numbers) {
|
||||
// $rcursor, however, is always at the start of a token.
|
||||
$rcursor = $cursor - (int)$inside_tag;
|
||||
|
||||
// Column number is cheap, so we calculate it every round.
|
||||
// We're interested at the *end* of the newline string, so
|
||||
// we need to add strlen($nl) == 1 to $nl_pos before subtracting it
|
||||
// from our "rcursor" position.
|
||||
$nl_pos = strrpos($html, $nl, $rcursor - $length);
|
||||
$current_col = $rcursor - (is_bool($nl_pos) ? 0 : $nl_pos + 1);
|
||||
|
||||
// recalculate lines
|
||||
if ($synchronize_interval && // synchronization is on
|
||||
$cursor > 0 && // cursor is further than zero
|
||||
$loops % $synchronize_interval === 0) { // time to synchronize!
|
||||
$current_line = 1 + $this->substrCount($html, $nl, 0, $cursor);
|
||||
}
|
||||
}
|
||||
|
||||
$position_next_lt = strpos($html, '<', $cursor);
|
||||
$position_next_gt = strpos($html, '>', $cursor);
|
||||
|
||||
// triggers on "<b>asdf</b>" but not "asdf <b></b>"
|
||||
// special case to set up context
|
||||
if ($position_next_lt === $cursor) {
|
||||
$inside_tag = true;
|
||||
$cursor++;
|
||||
}
|
||||
|
||||
if (!$inside_tag && $position_next_lt !== false) {
|
||||
// We are not inside tag and there still is another tag to parse
|
||||
$token = new
|
||||
HTMLPurifier_Token_Text(
|
||||
$this->parseText(
|
||||
substr(
|
||||
$html,
|
||||
$cursor,
|
||||
$position_next_lt - $cursor
|
||||
), $config
|
||||
)
|
||||
);
|
||||
if ($maintain_line_numbers) {
|
||||
$token->rawPosition($current_line, $current_col);
|
||||
$current_line += $this->substrCount($html, $nl, $cursor, $position_next_lt - $cursor);
|
||||
}
|
||||
$array[] = $token;
|
||||
$cursor = $position_next_lt + 1;
|
||||
$inside_tag = true;
|
||||
continue;
|
||||
} elseif (!$inside_tag) {
|
||||
// We are not inside tag but there are no more tags
|
||||
// If we're already at the end, break
|
||||
if ($cursor === strlen($html)) {
|
||||
break;
|
||||
}
|
||||
// Create Text of rest of string
|
||||
$token = new
|
||||
HTMLPurifier_Token_Text(
|
||||
$this->parseText(
|
||||
substr(
|
||||
$html,
|
||||
$cursor
|
||||
), $config
|
||||
)
|
||||
);
|
||||
if ($maintain_line_numbers) {
|
||||
$token->rawPosition($current_line, $current_col);
|
||||
}
|
||||
$array[] = $token;
|
||||
break;
|
||||
} elseif ($inside_tag && $position_next_gt !== false) {
|
||||
// We are in tag and it is well formed
|
||||
// Grab the internals of the tag
|
||||
$strlen_segment = $position_next_gt - $cursor;
|
||||
|
||||
if ($strlen_segment < 1) {
|
||||
// there's nothing to process!
|
||||
$token = new HTMLPurifier_Token_Text('<');
|
||||
$cursor++;
|
||||
continue;
|
||||
}
|
||||
|
||||
$segment = substr($html, $cursor, $strlen_segment);
|
||||
|
||||
if ($segment === false) {
|
||||
// somehow, we attempted to access beyond the end of
|
||||
// the string, defense-in-depth, reported by Nate Abele
|
||||
break;
|
||||
}
|
||||
|
||||
// Check if it's a comment
|
||||
if (substr($segment, 0, 3) === '!--') {
|
||||
// re-determine segment length, looking for -->
|
||||
$position_comment_end = strpos($html, '-->', $cursor);
|
||||
if ($position_comment_end === false) {
|
||||
// uh oh, we have a comment that extends to
|
||||
// infinity. Can't be helped: set comment
|
||||
// end position to end of string
|
||||
if ($e) {
|
||||
$e->send(E_WARNING, 'Lexer: Unclosed comment');
|
||||
}
|
||||
$position_comment_end = strlen($html);
|
||||
$end = true;
|
||||
} else {
|
||||
$end = false;
|
||||
}
|
||||
$strlen_segment = $position_comment_end - $cursor;
|
||||
$segment = substr($html, $cursor, $strlen_segment);
|
||||
$token = new
|
||||
HTMLPurifier_Token_Comment(
|
||||
substr(
|
||||
$segment,
|
||||
3,
|
||||
$strlen_segment - 3
|
||||
)
|
||||
);
|
||||
if ($maintain_line_numbers) {
|
||||
$token->rawPosition($current_line, $current_col);
|
||||
$current_line += $this->substrCount($html, $nl, $cursor, $strlen_segment);
|
||||
}
|
||||
$array[] = $token;
|
||||
$cursor = $end ? $position_comment_end : $position_comment_end + 3;
|
||||
$inside_tag = false;
|
||||
continue;
|
||||
}
|
||||
|
||||
// Check if it's an end tag
|
||||
$is_end_tag = (strpos($segment, '/') === 0);
|
||||
if ($is_end_tag) {
|
||||
$type = substr($segment, 1);
|
||||
$token = new HTMLPurifier_Token_End($type);
|
||||
if ($maintain_line_numbers) {
|
||||
$token->rawPosition($current_line, $current_col);
|
||||
$current_line += $this->substrCount($html, $nl, $cursor, $position_next_gt - $cursor);
|
||||
}
|
||||
$array[] = $token;
|
||||
$inside_tag = false;
|
||||
$cursor = $position_next_gt + 1;
|
||||
continue;
|
||||
}
|
||||
|
||||
// Check leading character is alnum, if not, we may
|
||||
// have accidently grabbed an emoticon. Translate into
|
||||
// text and go our merry way
|
||||
if (!ctype_alpha($segment[0])) {
|
||||
// XML: $segment[0] !== '_' && $segment[0] !== ':'
|
||||
if ($e) {
|
||||
$e->send(E_NOTICE, 'Lexer: Unescaped lt');
|
||||
}
|
||||
$token = new HTMLPurifier_Token_Text('<');
|
||||
if ($maintain_line_numbers) {
|
||||
$token->rawPosition($current_line, $current_col);
|
||||
$current_line += $this->substrCount($html, $nl, $cursor, $position_next_gt - $cursor);
|
||||
}
|
||||
$array[] = $token;
|
||||
$inside_tag = false;
|
||||
continue;
|
||||
}
|
||||
|
||||
// Check if it is explicitly self closing, if so, remove
|
||||
// trailing slash. Remember, we could have a tag like <br>, so
|
||||
// any later token processing scripts must convert improperly
|
||||
// classified EmptyTags from StartTags.
|
||||
$is_self_closing = (strrpos($segment, '/') === $strlen_segment - 1);
|
||||
if ($is_self_closing) {
|
||||
$strlen_segment--;
|
||||
$segment = substr($segment, 0, $strlen_segment);
|
||||
}
|
||||
|
||||
// Check if there are any attributes
|
||||
$position_first_space = strcspn($segment, $this->_whitespace);
|
||||
|
||||
if ($position_first_space >= $strlen_segment) {
|
||||
if ($is_self_closing) {
|
||||
$token = new HTMLPurifier_Token_Empty($segment);
|
||||
} else {
|
||||
$token = new HTMLPurifier_Token_Start($segment);
|
||||
}
|
||||
if ($maintain_line_numbers) {
|
||||
$token->rawPosition($current_line, $current_col);
|
||||
$current_line += $this->substrCount($html, $nl, $cursor, $position_next_gt - $cursor);
|
||||
}
|
||||
$array[] = $token;
|
||||
$inside_tag = false;
|
||||
$cursor = $position_next_gt + 1;
|
||||
continue;
|
||||
}
|
||||
|
||||
// Grab out all the data
|
||||
$type = substr($segment, 0, $position_first_space);
|
||||
$attribute_string =
|
||||
trim(
|
||||
substr(
|
||||
$segment,
|
||||
$position_first_space
|
||||
)
|
||||
);
|
||||
if ($attribute_string) {
|
||||
$attr = $this->parseAttributeString(
|
||||
$attribute_string,
|
||||
$config,
|
||||
$context
|
||||
);
|
||||
} else {
|
||||
$attr = array();
|
||||
}
|
||||
|
||||
if ($is_self_closing) {
|
||||
$token = new HTMLPurifier_Token_Empty($type, $attr);
|
||||
} else {
|
||||
$token = new HTMLPurifier_Token_Start($type, $attr);
|
||||
}
|
||||
if ($maintain_line_numbers) {
|
||||
$token->rawPosition($current_line, $current_col);
|
||||
$current_line += $this->substrCount($html, $nl, $cursor, $position_next_gt - $cursor);
|
||||
}
|
||||
$array[] = $token;
|
||||
$cursor = $position_next_gt + 1;
|
||||
$inside_tag = false;
|
||||
continue;
|
||||
} else {
|
||||
// inside tag, but there's no ending > sign
|
||||
if ($e) {
|
||||
$e->send(E_WARNING, 'Lexer: Missing gt');
|
||||
}
|
||||
$token = new
|
||||
HTMLPurifier_Token_Text(
|
||||
'<' .
|
||||
$this->parseText(
|
||||
substr($html, $cursor), $config
|
||||
)
|
||||
);
|
||||
if ($maintain_line_numbers) {
|
||||
$token->rawPosition($current_line, $current_col);
|
||||
}
|
||||
// no cursor scroll? Hmm...
|
||||
$array[] = $token;
|
||||
break;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
$context->destroy('CurrentLine');
|
||||
$context->destroy('CurrentCol');
|
||||
return $array;
|
||||
}
|
||||
|
||||
/**
|
||||
* PHP 5.0.x compatible substr_count that implements offset and length
|
||||
* @param string $haystack
|
||||
* @param string $needle
|
||||
* @param int $offset
|
||||
* @param int $length
|
||||
* @return int
|
||||
*/
|
||||
protected function substrCount($haystack, $needle, $offset, $length)
|
||||
{
|
||||
static $oldVersion;
|
||||
if ($oldVersion === null) {
|
||||
$oldVersion = version_compare(PHP_VERSION, '5.1', '<');
|
||||
}
|
||||
if ($oldVersion) {
|
||||
$haystack = substr($haystack, $offset, $length);
|
||||
return substr_count($haystack, $needle);
|
||||
} else {
|
||||
return substr_count($haystack, $needle, $offset, $length);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Takes the inside of an HTML tag and makes an assoc array of attributes.
|
||||
*
|
||||
* @param string $string Inside of tag excluding name.
|
||||
* @param HTMLPurifier_Config $config
|
||||
* @param HTMLPurifier_Context $context
|
||||
* @return array Assoc array of attributes.
|
||||
*/
|
||||
public function parseAttributeString($string, $config, $context)
|
||||
{
|
||||
$string = (string)$string; // quick typecast
|
||||
|
||||
if ($string == '') {
|
||||
return array();
|
||||
} // no attributes
|
||||
|
||||
$e = false;
|
||||
if ($config->get('Core.CollectErrors')) {
|
||||
$e =& $context->get('ErrorCollector');
|
||||
}
|
||||
|
||||
// let's see if we can abort as quickly as possible
|
||||
// one equal sign, no spaces => one attribute
|
||||
$num_equal = substr_count($string, '=');
|
||||
$has_space = strpos($string, ' ');
|
||||
if ($num_equal === 0 && !$has_space) {
|
||||
// bool attribute
|
||||
return array($string => $string);
|
||||
} elseif ($num_equal === 1 && !$has_space) {
|
||||
// only one attribute
|
||||
list($key, $quoted_value) = explode('=', $string);
|
||||
$quoted_value = trim($quoted_value);
|
||||
if (!$key) {
|
||||
if ($e) {
|
||||
$e->send(E_ERROR, 'Lexer: Missing attribute key');
|
||||
}
|
||||
return array();
|
||||
}
|
||||
if (!$quoted_value) {
|
||||
return array($key => '');
|
||||
}
|
||||
$first_char = @$quoted_value[0];
|
||||
$last_char = @$quoted_value[strlen($quoted_value) - 1];
|
||||
|
||||
$same_quote = ($first_char == $last_char);
|
||||
$open_quote = ($first_char == '"' || $first_char == "'");
|
||||
|
||||
if ($same_quote && $open_quote) {
|
||||
// well behaved
|
||||
$value = substr($quoted_value, 1, strlen($quoted_value) - 2);
|
||||
} else {
|
||||
// not well behaved
|
||||
if ($open_quote) {
|
||||
if ($e) {
|
||||
$e->send(E_ERROR, 'Lexer: Missing end quote');
|
||||
}
|
||||
$value = substr($quoted_value, 1);
|
||||
} else {
|
||||
$value = $quoted_value;
|
||||
}
|
||||
}
|
||||
if ($value === false) {
|
||||
$value = '';
|
||||
}
|
||||
return array($key => $this->parseAttr($value, $config));
|
||||
}
|
||||
|
||||
// setup loop environment
|
||||
$array = array(); // return assoc array of attributes
|
||||
$cursor = 0; // current position in string (moves forward)
|
||||
$size = strlen($string); // size of the string (stays the same)
|
||||
|
||||
// if we have unquoted attributes, the parser expects a terminating
|
||||
// space, so let's guarantee that there's always a terminating space.
|
||||
$string .= ' ';
|
||||
|
||||
$old_cursor = -1;
|
||||
while ($cursor < $size) {
|
||||
if ($old_cursor >= $cursor) {
|
||||
throw new Exception("Infinite loop detected");
|
||||
}
|
||||
$old_cursor = $cursor;
|
||||
|
||||
$cursor += ($value = strspn($string, $this->_whitespace, $cursor));
|
||||
// grab the key
|
||||
|
||||
$key_begin = $cursor; //we're currently at the start of the key
|
||||
|
||||
// scroll past all characters that are the key (not whitespace or =)
|
||||
$cursor += strcspn($string, $this->_whitespace . '=', $cursor);
|
||||
|
||||
$key_end = $cursor; // now at the end of the key
|
||||
|
||||
$key = substr($string, $key_begin, $key_end - $key_begin);
|
||||
|
||||
if (!$key) {
|
||||
if ($e) {
|
||||
$e->send(E_ERROR, 'Lexer: Missing attribute key');
|
||||
}
|
||||
$cursor += 1 + strcspn($string, $this->_whitespace, $cursor + 1); // prevent infinite loop
|
||||
continue; // empty key
|
||||
}
|
||||
|
||||
// scroll past all whitespace
|
||||
$cursor += strspn($string, $this->_whitespace, $cursor);
|
||||
|
||||
if ($cursor >= $size) {
|
||||
$array[$key] = $key;
|
||||
break;
|
||||
}
|
||||
|
||||
// if the next character is an equal sign, we've got a regular
|
||||
// pair, otherwise, it's a bool attribute
|
||||
$first_char = @$string[$cursor];
|
||||
|
||||
if ($first_char == '=') {
|
||||
// key="value"
|
||||
|
||||
$cursor++;
|
||||
$cursor += strspn($string, $this->_whitespace, $cursor);
|
||||
|
||||
if ($cursor === false) {
|
||||
$array[$key] = '';
|
||||
break;
|
||||
}
|
||||
|
||||
// we might be in front of a quote right now
|
||||
|
||||
$char = @$string[$cursor];
|
||||
|
||||
if ($char == '"' || $char == "'") {
|
||||
// it's quoted, end bound is $char
|
||||
$cursor++;
|
||||
$value_begin = $cursor;
|
||||
$cursor = strpos($string, $char, $cursor);
|
||||
$value_end = $cursor;
|
||||
} else {
|
||||
// it's not quoted, end bound is whitespace
|
||||
$value_begin = $cursor;
|
||||
$cursor += strcspn($string, $this->_whitespace, $cursor);
|
||||
$value_end = $cursor;
|
||||
}
|
||||
|
||||
// we reached a premature end
|
||||
if ($cursor === false) {
|
||||
$cursor = $size;
|
||||
$value_end = $cursor;
|
||||
}
|
||||
|
||||
$value = substr($string, $value_begin, $value_end - $value_begin);
|
||||
if ($value === false) {
|
||||
$value = '';
|
||||
}
|
||||
$array[$key] = $this->parseAttr($value, $config);
|
||||
$cursor++;
|
||||
} else {
|
||||
// boolattr
|
||||
if ($key !== '') {
|
||||
$array[$key] = $key;
|
||||
} else {
|
||||
// purely theoretical
|
||||
if ($e) {
|
||||
$e->send(E_ERROR, 'Lexer: Missing attribute key');
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return $array;
|
||||
}
|
||||
}
|
||||
|
||||
// vim: et sw=4 sts=4
|
||||
4788
vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/PH5P.php
vendored
Normal file
4788
vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/PH5P.php
vendored
Normal file
File diff suppressed because it is too large
Load Diff
Reference in New Issue
Block a user