--- /dev/null
+<?php
+
+namespace RemexHtml\TreeBuilder;
+use RemexHtml\HTMLData;
+use RemexHtml\Tokenizer\Attributes;
+use RemexHtml\Tokenizer\PlainAttributes;
+use 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.
+ */
+ static private $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.
+ */
+ static private $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 );
+ }
+ }
+}
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