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| 1 | <?php |
| 2 | |
| 3 | use MediaWiki\Extension\Math\MathLaTeXML; |
| 4 | |
| 5 | class MwsDumpWriter { |
| 6 | |
| 7 | /** @var string */ |
| 8 | private $mwsns = 'mws:'; |
| 9 | /** @var string */ |
| 10 | private $XMLHead; |
| 11 | /** @var string */ |
| 12 | private $XMLFooter; |
| 13 | /** @var string */ |
| 14 | private $outBuffer = ''; |
| 15 | |
| 16 | public function __construct( $ns = 'mws:' ) { |
| 17 | $this->setMwsns( $ns ); |
| 18 | $this->InitializeHeader(); |
| 19 | } |
| 20 | |
| 21 | public function InitializeHeader() { |
| 22 | $ns = $this->mwsns; |
| 23 | $this->XMLHead = "<?xml version=\"1.0\"?>\n<" . $ns . |
| 24 | 'harvest xmlns:mws="http://search.mathweb.org/ns" xmlns:m="http://www.w3.org/1998/Math/MathML">'; |
| 25 | $this->XMLFooter = '</' . $ns . 'harvest>'; |
| 26 | } |
| 27 | |
| 28 | /** |
| 29 | * @param stdClass $row |
| 30 | * |
| 31 | * @return string |
| 32 | */ |
| 33 | public function generateIndexString( $row ) { |
| 34 | $xml = simplexml_load_string( $row->math_mathml ); |
| 35 | if ( !$xml ) { |
| 36 | echo "ERROR while converting:\n " . var_export( $row->math_mathml, true ) . "\n"; |
| 37 | foreach ( libxml_get_errors() as $error ) { |
| 38 | echo "\t", $error->message; |
| 39 | } |
| 40 | libxml_clear_errors(); |
| 41 | return ''; |
| 42 | } |
| 43 | return $this->getMwsExpression( $row->math_mathml, |
| 44 | $row->mathindex_revision_id, $row->mathindex_anchor |
| 45 | ); |
| 46 | } |
| 47 | |
| 48 | public function getHead() { |
| 49 | return $this->XMLHead; |
| 50 | } |
| 51 | |
| 52 | public function getFooter() { |
| 53 | return $this->XMLFooter; |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * @param string $mathML |
| 58 | * @param int $revId |
| 59 | * @param string $eId |
| 60 | * @return string |
| 61 | */ |
| 62 | public function getMwsExpression( $mathML, $revId, $eId ) { |
| 63 | $out = "\n<" . $this->mwsns . "expr url=\"{$revId}#{$eId}\">\n\t"; |
| 64 | $out .= $mathML; |
| 65 | $out .= "\n</" . $this->mwsns . "expr>\n"; |
| 66 | return $out; |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * @param string $mathML |
| 71 | * @param int $revId |
| 72 | * @param string $eId |
| 73 | * @return true |
| 74 | */ |
| 75 | public function addMwsExpression( $mathML, $revId, $eId ) { |
| 76 | $this->outBuffer .= $this->getMwsExpression( $mathML, $revId, $eId ); |
| 77 | return true; |
| 78 | } |
| 79 | |
| 80 | public function addRevision( $revId ) { |
| 81 | $mathId = MathIdGenerator::newFromRevisionId( $revId ); |
| 82 | $this->addFromMathIdGenerator( $mathId ); |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * @return string |
| 87 | */ |
| 88 | public function getMwsns() { |
| 89 | return $this->mwsns; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * @param string $mwsns |
| 94 | */ |
| 95 | public function setMwsns( $mwsns ) { |
| 96 | $this->mwsns = $mwsns; |
| 97 | } |
| 98 | |
| 99 | public function getOutput() { |
| 100 | return $this->getHead() . $this->outBuffer . $this->getFooter(); |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * @param MathIdGenerator $generator |
| 105 | */ |
| 106 | public function addFromMathIdGenerator( MathIdGenerator $generator ) { |
| 107 | foreach ( $generator->getMathTags() as $key => $tag ) { |
| 108 | $mml = new MathLaTeXML( $tag[MathIdGenerator::CONTENT_POS], |
| 109 | $tag[MathIdGenerator::ATTRIB_POS] ); |
| 110 | $mml->render(); |
| 111 | $this->outBuffer .= $this->getMwsExpression( $mml->getMathml(), |
| 112 | $generator->getRevisionId(), |
| 113 | $generator->parserKey2fId( $key ) ); |
| 114 | } |
| 115 | } |
| 116 | } |