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InBody.php
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InBody.php
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<?php
namespace Wikimedia\RemexHtml\TreeBuilder;
use Wikimedia\RemexHtml\HTMLData;
use Wikimedia\RemexHtml\Tokenizer\Attributes;
use Wikimedia\RemexHtml\Tokenizer\PlainAttributes;
use Wikimedia\RemexHtml\Tokenizer\Tokenizer;
/**
* The "in body" insertion mode.
*/
class InBody extends InsertionMode {
/**
* The tag names h1-h6, which are referred to at a couple of points.
* @var array<string,bool>
*/
private static $headingNames = [
'h1' => true,
'h2' => true,
'h3' => true,
'h4' => true,
'h5' => true,
'h6' => true
];
/**
* The tag names which can be closed by </body> or </html> without causing
* an error.
*
* @var array<string,bool>
*/
private static $implicitClose = [
'dd' => true,
'dt' => true,
'li' => true,
'optgroup' => true,
'option' => true,
'p' => true,
'rb' => true,
'rp' => true,
'rt' => true,
'rtc' => true,
'tbody' => true,
'td' => true,
'tfoot' => true,
'th' => true,
'thead' => true,
'tr' => true,
'body' => true,
'html' => true,
];
public function characters( $text, $start, $length, $sourceStart, $sourceLength ) {
$handleNonNull = function ( $text, $start, $length, $sourceStart, $sourceLength ) {
if ( strspn( $text, "\t\n\f\r ", $start, $length ) !== $length ) {
$this->builder->framesetOK = false;
}
$this->builder->reconstructAFE( $sourceStart );
$this->builder->insertCharacters( $text, $start, $length, $sourceStart, $sourceLength );
};
if ( !$this->builder->ignoreNulls ) {
$this->stripNulls( $handleNonNull, $text, $start, $length, $sourceStart, $sourceLength );
} else {
$handleNonNull( $text, $start, $length, $sourceStart, $sourceLength );
}
}
public function startTag( $name, Attributes $attrs, $selfClose, $sourceStart, $sourceLength ) {
$mode = null;
$textMode = null;
$tokenizerState = null;
$isNewAFE = false;
$builder = $this->builder;
$stack = $builder->stack;
$dispatcher = $this->dispatcher;
$void = false;
switch ( $name ) {
case 'html':
$builder->error( 'merging unexpected html tag', $sourceStart );
if ( $stack->hasTemplate() ) {
return;
}
if ( $stack->length() < 1 ) {
return;
}
$builder->mergeAttributes( $stack->item( 0 ), $attrs, $sourceStart, $sourceLength );
return;
case 'base':
case 'basefont':
case 'bgsound':
case 'link':
case 'meta':
case 'noframes':
case 'script':
case 'style':
case 'template':
case 'title':
$dispatcher->inHead->startTag(
$name, $attrs, $selfClose, $sourceStart, $sourceLength );
return;
case 'body':
if ( $stack->length() < 2 || $stack->hasTemplate() ) {
$builder->error( 'ignored unexpected body tag', $sourceStart );
return;
}
$body = $stack->item( 1 );
if ( $body->htmlName !== 'body' ) {
$builder->error( 'ignored unexpected body tag', $sourceStart );
return;
}
$builder->error( 'merged unexpected body tag', $sourceStart );
$this->builder->framesetOK = false;
$this->builder->mergeAttributes( $body, $attrs, $sourceStart, $sourceLength );
return;
case 'frameset':
if ( !$builder->framesetOK || $stack->length() < 2 || $stack->hasTemplate() ) {
$builder->error( 'ignored unexpected frameset tag', $sourceStart );
return;
}
$body = $stack->item( 1 );
if ( $body->htmlName !== 'body' ) {
$builder->error( 'ignored unexpected frameset tag', $sourceStart );
return;
}
$builder->error( 'unexpected frameset tag erases body contents', $sourceStart );
$builder->handler->removeNode( $body, $sourceStart );
// Pop all the nodes from the bottom of the stack of open elements,
// from the current node up to, but not including, the root html element.
$n = $stack->length();
for ( $i = 0; $i < $n - 1; $i++ ) {
$stack->pop();
}
$mode = Dispatcher::IN_FRAMESET;
// Insert as normal
break;
case 'address':
case 'article':
case 'aside':
case 'blockquote':
case 'center':
case 'details':
case 'dir':
case 'div':
case 'dl':
case 'fieldset':
case 'figcaption':
case 'figure':
case 'footer':
case 'header':
case 'main':
case 'menu':
case 'nav':
case 'ol':
case 'p':
case 'section':
case 'summary':
case 'ul':
$builder->closePInButtonScope( $sourceStart );
break;
case 'h1':
case 'h2':
case 'h3':
case 'h4':
case 'h5':
case 'h6':
$builder->closePInButtonScope( $sourceStart );
if ( isset( self::$headingNames[$stack->current->htmlName] ) ) {
$builder->error( 'invalid nested heading, closing previous', $sourceStart );
$builder->pop( $sourceStart, 0 );
}
break;
case 'pre':
case 'listing':
$builder->closePInButtonScope( $sourceStart );
$builder->framesetOK = false;
$textMode = Dispatcher::IN_PRE;
break;
case 'form':
if ( $builder->formElement !== null && !$stack->hasTemplate() ) {
$builder->error( 'ignoring nested form tag', $sourceStart );
return;
}
$builder->closePInButtonScope( $sourceStart );
$elt = $builder->insertElement( 'form', $attrs, false,
$sourceStart, $sourceLength );
if ( !$stack->hasTemplate() ) {
$builder->formElement = $elt;
}
return;
case 'li':
$builder->framesetOK = false;
for ( $idx = $stack->length() - 1; $idx >= 0; $idx-- ) {
$node = $stack->item( $idx );
$htmlName = $node->htmlName;
if ( $htmlName === 'li' ) {
$builder->generateImpliedEndTagsAndPop( 'li', $sourceStart, 0 );
break;
}
if ( isset( HTMLData::$special[$node->namespace][$node->name] )
&& $htmlName !== 'address' && $htmlName !== 'div' && $htmlName !== 'p'
) {
break;
}
}
$builder->closePInButtonScope( $sourceStart );
break;
case 'dd':
case 'dt':
$builder->framesetOK = false;
for ( $idx = $stack->length() - 1; $idx >= 0; $idx-- ) {
$node = $stack->item( $idx );
$htmlName = $node->htmlName;
if ( $htmlName === 'dd' || $htmlName === 'dt' ) {
$builder->generateImpliedEndTagsAndPop( $htmlName, $sourceStart, 0 );
break;
}
if ( isset( HTMLData::$special[$node->namespace][$node->name] )
&& $htmlName !== 'address' && $htmlName !== 'div' && $htmlName !== 'p'
) {
break;
}
}
$builder->closePInButtonScope( $sourceStart );
break;
case 'plaintext':
$builder->closePInButtonScope( $sourceStart );
$tokenizerState = Tokenizer::STATE_PLAINTEXT;
break;
case 'button':
if ( $stack->isInScope( 'button' ) ) {
$builder->error( 'invalid nested button tag, closing previous', $sourceStart );
$builder->generateImpliedEndTags( false, $sourceStart );
$builder->popAllUpToName( 'button', $sourceStart, 0 );
}
$builder->reconstructAFE( $sourceStart );
$builder->framesetOK = false;
break;
case 'a':
$elt = $builder->afe->findElementByName( 'a' );
if ( $elt !== null ) {
$builder->error( 'invalid nested a tag, closing previous', $sourceStart );
$builder->adoptionAgency( 'a', $sourceStart, 0 );
if ( $builder->afe->isInList( $elt ) ) {
$builder->afe->remove( $elt );
}
if ( $elt->stackIndex !== null ) {
$stack->remove( $elt );
}
}
$builder->reconstructAFE( $sourceStart );
$isNewAFE = true;
break;
case 'b':
case 'big':
case 'code':
case 'em':
case 'font':
case 'i':
case 's':
case 'small':
case 'strike':
case 'strong':
case 'tt':
case 'u':
$builder->reconstructAFE( $sourceStart );
$isNewAFE = true;
break;
case 'nobr':
$builder->reconstructAFE( $sourceStart );
if ( $stack->isInScope( 'nobr' ) ) {
$builder->error( 'invalid nested nobr tag, closing previous', $sourceStart );
$builder->adoptionAgency( 'nobr', $sourceStart, 0 );
$builder->reconstructAFE( $sourceStart );
}
$isNewAFE = true;
break;
case 'applet':
case 'marquee':
case 'object':
$builder->reconstructAFE( $sourceStart );
$builder->afe->insertMarker();
$builder->framesetOK = false;
break;
case 'table':
if ( $builder->quirks !== TreeBuilder::QUIRKS ) {
$builder->closePInButtonScope( $sourceStart );
}
$builder->framesetOK = false;
$mode = Dispatcher::IN_TABLE;
break;
case 'area':
case 'br':
case 'embed':
case 'img':
case 'keygen':
case 'wbr':
$builder->reconstructAFE( $sourceStart );
$dispatcher->ack = true;
$void = true;
$builder->framesetOK = false;
break;
case 'input':
$builder->reconstructAFE( $sourceStart );
$dispatcher->ack = true;
$void = true;
if ( !isset( $attrs['type'] ) || strcasecmp( $attrs['type'], 'hidden' ) !== 0 ) {
$builder->framesetOK = false;
}
break;
case 'menuitem':
case 'param':
case 'source':
case 'track':
$dispatcher->ack = true;
$void = true;
break;
case 'hr':
$builder->closePInButtonScope( $sourceStart );
$dispatcher->ack = true;
$void = true;
$builder->framesetOK = false;
break;
case 'image':
$builder->error( 'invalid "image" tag, assuming "img"', $sourceStart );
$this->startTag( 'img', $attrs, $selfClose, $sourceStart, $sourceLength );
return;
case 'textarea':
$tokenizerState = Tokenizer::STATE_RCDATA;
$textMode = Dispatcher::IN_TEXTAREA;
$builder->framesetOK = false;
break;
case 'xmp':
$builder->closePInButtonScope( $sourceStart );
$builder->reconstructAFE( $sourceStart );
$builder->framesetOK = false;
$tokenizerState = Tokenizer::STATE_RAWTEXT;
$textMode = Dispatcher::TEXT;
break;
case 'iframe':
$builder->framesetOK = false;
$tokenizerState = Tokenizer::STATE_RAWTEXT;
$textMode = Dispatcher::TEXT;
break;
case 'noscript':
if ( !$builder->scriptingFlag ) {
$builder->reconstructAFE( $sourceStart );
break;
}
// fall through
case 'noembed':
$tokenizerState = Tokenizer::STATE_RAWTEXT;
$textMode = Dispatcher::TEXT;
break;
case 'select':
$builder->reconstructAFE( $sourceStart );
$builder->framesetOK = false;
if ( $dispatcher->isInTableMode() ) {
$mode = Dispatcher::IN_SELECT_IN_TABLE;
} else {
$mode = Dispatcher::IN_SELECT;
}
break;
case 'optgroup':
case 'option':
if ( $stack->current->htmlName === 'option' ) {
$builder->pop( $sourceStart, 0 );
}
$builder->reconstructAFE( $sourceStart );
break;
case 'rb':
case 'rtc':
if ( $stack->isInScope( 'ruby' ) ) {
$builder->generateImpliedEndTags( false, $sourceStart );
if ( $stack->current->htmlName !== 'ruby'
) {
$builder->error( "<$name> is not a child of <ruby>", $sourceStart );
}
}
break;
case 'rp':
case 'rt':
if ( $stack->isInScope( 'ruby' ) ) {
$builder->generateImpliedEndTags( 'rtc', $sourceStart );
if ( !in_array( $stack->current->htmlName, [ 'ruby', 'rtc' ] ) ) {
$builder->error( "<$name> is not a child of <ruby> or <rtc>", $sourceStart );
}
}
break;
case 'math':
$builder->reconstructAFE( $sourceStart );
$attrs = new ForeignAttributes( $attrs, 'math' );
$dispatcher->ack = true;
$builder->insertForeign( HTMLData::NS_MATHML, 'math', $attrs, $selfClose,
$sourceStart, $sourceLength );
return;
case 'svg':
$builder->reconstructAFE( $sourceStart );
$attrs = new ForeignAttributes( $attrs, 'svg' );
$dispatcher->ack = true;
$builder->insertForeign( HTMLData::NS_SVG, 'svg', $attrs, $selfClose,
$sourceStart, $sourceLength );
return;
case 'caption':
case 'col':
case 'colgroup':
case 'frame':
case 'head':
case 'tbody':
case 'td':
case 'tfoot':
case 'th':
case 'thead':
case 'tr':
$builder->error( "$name is invalid in body mode", $sourceStart );
return;
default:
$builder->reconstructAFE( $sourceStart );
}
// Generic element insertion, for all cases that didn't return above
$element = $builder->insertElement( $name, $attrs, $void,
$sourceStart, $sourceLength );
if ( $isNewAFE ) {
$builder->afe->push( $element );
}
if ( $tokenizerState !== null ) {
$builder->tokenizer->switchState( $tokenizerState, $name );
}
if ( $mode !== null ) {
$dispatcher->switchMode( $mode );
} elseif ( $textMode !== null ) {
$dispatcher->switchAndSave( $textMode );
}
}
public function endTag( $name, $sourceStart, $sourceLength ) {
$builder = $this->builder;
$stack = $builder->stack;
$dispatcher = $this->dispatcher;
switch ( $name ) {
case 'template':
$dispatcher->inHead->endTag( $name, $sourceStart, $sourceLength );
break;
case 'body':
if ( !$stack->isInScope( 'body' ) ) {
$builder->error( '</body> has no matching start tag in scope', $sourceStart );
break;
}
$builder->checkUnclosed( self::$implicitClose, $sourceStart );
$dispatcher->switchMode( Dispatcher::AFTER_BODY );
break;
case 'html':
if ( !$stack->isInScope( 'body' ) ) {
$builder->error( '</html> found in body mode but the body is not in scope',
$sourceStart );
break;
}
$builder->checkUnclosed( self::$implicitClose, $sourceStart );
$dispatcher->switchMode( Dispatcher::AFTER_BODY )
->endTag( $name, $sourceStart, $sourceLength );
break;
case 'address':
case 'article':
case 'aside':
case 'blockquote':
case 'button':
case 'center':
case 'details':
case 'dir':
case 'div':
case 'dl':
case 'fieldset':
case 'figcaption':
case 'figure':
case 'footer':
case 'header':
case 'listing':
case 'main':
case 'menu':
case 'nav':
case 'ol':
case 'pre':
case 'section':
case 'summary':
case 'ul':
if ( !$stack->isInScope( $name ) ) {
$builder->error( "unmatched </$name>, ignoring", $sourceStart );
break;
}
$builder->generateImpliedEndTagsAndPop( $name, $sourceStart, $sourceLength );
break;
case 'form':
if ( !$stack->hasTemplate() ) {
$node = $builder->formElement;
$builder->formElement = null;
if ( $node === null ) {
$builder->error( "found </form> when there is no open form element",
$sourceStart );
break;
}
if ( !$stack->isElementInScope( $node ) ) {
$builder->error( "found </form> when there is no form in scope",
$sourceStart );
break;
}
$builder->generateImpliedEndTags( false, $sourceStart );
if ( $stack->current === $node ) {
$builder->pop( $sourceStart, $sourceLength );
} else {
$builder->error( "found </form> when there are tags open " .
"which cannot be closed automatically", $sourceStart );
$stack->remove( $node );
// FIXME cannot garbage collect in Serializer since children
// of the form are still in the stack
// $builder->handler->endTag( $node, $sourceStart, $sourceLength );
}
} else {
if ( !$stack->isInScope( 'form' ) ) {
$builder->error( "found </form> when there is no form in scope",
$sourceStart );
break;
}
$builder->generateImpliedEndTagsAndPop( 'form', $sourceStart, $sourceLength );
}
break;
case 'p':
if ( !$stack->isInButtonScope( 'p' ) ) {
$builder->error( "found </p> when there is no p in scope",
$sourceStart );
$builder->insertElement( 'p', new PlainAttributes, false, $sourceStart, 0 );
$builder->pop( $sourceStart, $sourceLength );
break;
}
$builder->generateImpliedEndTagsAndPop( 'p', $sourceStart, $sourceLength );
break;
case 'li':
if ( !$stack->isInListScope( 'li' ) ) {
$builder->error( "found </li> when there is no li in scope, ignoring",
$sourceStart );
break;
}
$builder->generateImpliedEndTagsAndPop( 'li', $sourceStart, $sourceLength );
break;
case 'dd':
case 'dt':
if ( !$stack->isInScope( $name ) ) {
$builder->error( "found </$name> when there is no $name in scope, ignoring",
$sourceStart );
break;
}
$builder->generateImpliedEndTagsAndPop( $name, $sourceStart, $sourceLength );
break;
case 'h1':
case 'h2':
case 'h3':
case 'h4':
case 'h5':
case 'h6':
if ( !$stack->isOneOfSetInScope( self::$headingNames ) ) {
$builder->error( "found </$name> when there is no heading tag in scope, ignoring",
$sourceStart );
break;
}
$builder->generateImpliedEndTags( false, $sourceStart );
if ( $stack->current->htmlName !== $name ) {
$builder->error( "end tag </$name> assumed to close non-matching heading tag",
$sourceStart );
}
$builder->popAllUpToNames( self::$headingNames, $sourceStart, $sourceLength );
break;
case 'a':
case 'b':
case 'big':
case 'code':
case 'em':
case 'font':
case 'i':
case 'nobr':
case 's':
case 'small':
case 'strike':
case 'strong':
case 'tt':
case 'u':
$builder->adoptionAgency( $name, $sourceStart, $sourceLength );
break;
case 'applet':
case 'marquee':
case 'object':
if ( !$stack->isInScope( $name ) ) {
$builder->error( "found </$name> when there is no $name in scope",
$sourceStart );
break;
}
$builder->generateImpliedEndTags( false, $sourceStart );
if ( $stack->current->htmlName !== $name ) {
$builder->error( "found </$name> when there are tags open which " .
"cannot be implicitly closed, closing them anyway", $sourceStart );
}
$builder->popAllUpToName( $name, $sourceStart, $sourceLength );
$builder->afe->clearToMarker();
break;
case 'br':
$builder->error( 'end tag </br> is invalid, assuming start tag', $sourceStart );
$this->startTag( $name, new PlainAttributes, false, $sourceStart, $sourceLength );
break;
default:
$builder->anyOtherEndTag( $name, $sourceStart, $sourceLength );
break;
}
}
public function endDocument( $pos ) {
$allowed = [
'dd' => true,
'dt' => true,
'li' => true,
'p' => true,
'tbody' => true,
'td' => true,
'tfoot' => true,
'th' => true,
'thead' => true,
'tr' => true,
'body' => true,
'html' => true,
];
$this->builder->checkUnclosed( $allowed, $pos );
if ( !$this->dispatcher->templateModeStack->isEmpty() ) {
$this->dispatcher->inTemplate->endDocument( $pos );
} else {
$this->builder->stopParsing( $pos );
}
}
}

File Metadata

Mime Type
text/x-php
Expires
Wed, Aug 19, 04:37 (14 h, 13 m ago)
Storage Engine
local-disk
Storage Format
Raw Data
Storage Handle
38/b8/17da5e674e909dcae5c2d5eeb879
Default Alt Text
InBody.php (18 KB)

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