vendor/wikimedia/remex-html/RemexHtml/TreeBuilder/Initial.php

   1 <?php
   2
   3 namespace RemexHtml\TreeBuilder;
   4 use RemexHtml\HTMLData;
   5 use RemexHtml\Tokenizer\Attributes;
   6
   7 /**
   8  * The "initial" insertion mode
   9  */
  10 class Initial extends InsertionMode {
  11         /**
  12          * The doctypes listed in the spec which are allowed without generating a
  13          * parse error. A 2-d array where each row gives the doctype name, the
  14          * public identifier and the system identifier.
  15          */
  16         private static $allowedDoctypes = [
  17                 [ 'html', '-//W3C//DTD HTML 4.0//EN', null ],
  18                 [ 'html', '-//W3C//DTD HTML 4.0//EN', 'http://www.w3.org/TR/REC-html40/strict.dtd' ],
  19                 [ 'html', '-//W3C//DTD HTML 4.01//EN', null ],
  20                 [ 'html', '-//W3C//DTD HTML 4.01//EN', 'http://www.w3.org/TR/html4/strict.dtd' ],
  21                 [ 'html', '-//W3C//DTD XHTML 1.0 Strict//EN',
  22                         'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd' ],
  23                 [ 'html', '-//W3C//DTD XHTML 1.1//EN', 'http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd' ]
  24         ];
  25
  26         public function characters( $text, $start, $length, $sourceStart, $sourceLength ) {
  27                 // Ignore whitespace
  28                 list( $part1, $part2 ) = $this->splitInitialMatch(
  29                         true, "\t\n\f\r ", $text, $start, $length, $sourceStart, $sourceLength );
  30                 list( $start, $length, $sourceStart, $sourceLength ) = $part2;
  31                 if ( !$length ) {
  32                         return;
  33                 }
  34                 if ( !$this->builder->isIframeSrcdoc ) {
  35                         $this->error( 'missing doctype', $sourceStart );
  36                         $this->builder->quirks = TreeBuilder::QUIRKS;
  37                 }
  38                 $this->dispatcher->switchMode( Dispatcher::BEFORE_HTML )
  39                         ->characters( $text, $start, $length, $sourceStart, $sourceLength );
  40         }
  41
  42         public function startTag( $name, Attributes $attrs, $selfClose, $sourceStart, $sourceLength ) {
  43                 if ( !$this->builder->isIframeSrcdoc ) {
  44                         $this->error( 'missing doctype', $sourceStart );
  45                         $this->builder->quirks = TreeBuilder::QUIRKS;
  46                 }
  47                 $this->dispatcher->switchMode( Dispatcher::BEFORE_HTML )
  48                         ->startTag( $name, $attrs, $selfClose, $sourceStart, $sourceLength );
  49         }
  50
  51         public function endTag( $name, $sourceStart, $sourceLength ) {
  52                 if ( !$this->builder->isIframeSrcdoc ) {
  53                         $this->error( 'missing doctype', $sourceStart );
  54                         $this->builder->quirks = TreeBuilder::QUIRKS;
  55                 }
  56                 $this->dispatcher->switchMode( Dispatcher::BEFORE_HTML )
  57                         ->endTag( $name, $sourceStart, $sourceLength );
  58         }
  59
  60         public function doctype( $name, $public, $system, $quirks, $sourceStart, $sourceLength ) {
  61                 if ( ( $name !== 'html' || $public !== null
  62                                 || ( $system !== null && $system !== 'about:legacy-compat' )
  63                         )
  64                         && !in_array( [ $name, $public, $system ], self::$allowedDoctypes, true )
  65                 ) {
  66                         $this->error( 'invalid doctype', $sourceStart );
  67                 }
  68
  69                 $quirks = $quirks ? TreeBuilder::QUIRKS : TreeBuilder::NO_QUIRKS;
  70
  71                 $quirksIfNoSystem = '~-//W3C//DTD HTML 4\.01 Frameset//|' .
  72                         '-//W3C//DTD HTML 4\.01 Transitional//~Ai';
  73                 $limitedQuirks = '~-//W3C//DTD XHTML 1\.0 Frameset//|' .
  74                         '-//W3C//DTD XHTML 1\.0 Transitional//~Ai';
  75
  76                 if ( $name !== 'html'
  77                         || $public === '-//W3O//DTD W3 HTML Strict 3.0//EN//'
  78                         || $public === '-/W3C/DTD HTML 4.0 Transitional/EN'
  79                         || $public === 'HTML'
  80                         || $system === 'http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd'
  81                         || ( $system === null && preg_match( $quirksIfNoSystem, $public ) )
  82                         || preg_match( HTMLData::$quirkyPrefixRegex, $public )
  83                 ) {
  84                         $quirks = TreeBuilder::QUIRKS;
  85                 } elseif ( !$this->builder->isIframeSrcdoc
  86                         && (
  87                                 preg_match( $limitedQuirks, $public )
  88                                 || ( $system !== null && preg_match( $quirksIfNoSystem, $public ) )
  89                         )
  90                 ) {
  91                         $quirks = TreeBuilder::LIMITED_QUIRKS;
  92                 }
  93
  94                 $name = $name === null ? '' : $name;
  95                 $public = $public === null ? '' : $public;
  96                 $system = $system === null ? '' : $system;
  97                 $this->builder->doctype( $name, $public, $system, $quirks,
  98                         $sourceStart, $sourceLength );
  99                 $this->dispatcher->switchMode( Dispatcher::BEFORE_HTML );
 100         }
 101
 102         public function endDocument( $pos ) {
 103                 if ( !$this->builder->isIframeSrcdoc ) {
 104                         $this->error( 'missing doctype', $pos );
 105                         $this->builder->quirks = TreeBuilder::QUIRKS;
 106                 }
 107                 $this->dispatcher->switchMode( Dispatcher::BEFORE_HTML )
 108                         ->endDocument( $pos );
 109         }
 110 }