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<?php |
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namespace SIL; |
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use Title; |
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use Language; |
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use SMW\Localizer; |
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/** |
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* @license GNU GPL v2+ |
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* @since 1.0 |
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* |
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* @author mwjames |
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*/ |
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class InterlanguageListParserFunction { |
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/** |
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* @var InterlanguageLinksLookup |
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*/ |
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private $interlanguageLinksLookup; |
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/** |
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* @since 1.0 |
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* |
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* @param InterlanguageLinksLookup $interlanguageLinksLookup |
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*/ |
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public function __construct( InterlanguageLinksLookup $interlanguageLinksLookup ) { |
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$this->interlanguageLinksLookup = $interlanguageLinksLookup; |
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} |
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/** |
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* @since 1.0 |
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* |
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* @param string $linkReference |
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* @param string $template |
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* |
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* @return string |
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*/ |
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public function parse( $linkReference, $template ) { |
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if ( $linkReference === '' ) { |
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return $this->createErrorMessageFor( 'sil-interlanguagelist-missing-linkreference' ); |
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} |
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if ( $template === '' ) { |
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return $this->createErrorMessageFor( 'sil-interlanguagelist-missing-template' ); |
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} |
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$title = Title::newFromText( $linkReference ); |
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if ( $title === null ) { |
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return $this->createErrorMessageFor( 'sil-interlanguageparser-linkreference-error', $linkReference ); |
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} |
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// `null` indicates to the lookup interface to return all matches regardless |
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// of any language code |
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$interlanguageLink = new InterlanguageLink( |
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null, |
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$this->interlanguageLinksLookup->getRedirectTargetFor( $title ) |
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); |
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$languageTargetLinks = $this->getLanguageTargetLinks( $interlanguageLink ); |
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$templateText = $this->createTemplateInclusionCode( |
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$languageTargetLinks, |
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$template |
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); |
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return [ $templateText, 'noparse' => $templateText === '', 'isHTML' => false ]; |
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} |
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private function getLanguageTargetLinks( InterlanguageLink $interlanguageLink ) { |
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$languageTargetLinks = $this->interlanguageLinksLookup->queryLanguageTargetLinks( |
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$interlanguageLink |
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); |
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ksort( $languageTargetLinks ); |
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return $languageTargetLinks; |
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} |
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private function createTemplateInclusionCode( array $languageTargetLinks, $template ) { |
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$result = ''; |
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$templateText = ''; |
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$i = 0; |
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foreach ( $languageTargetLinks as $languageCode => $targetLink ) { |
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$wikitext = ''; |
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$wikitext .= "|#=" . $i++; |
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$wikitext .= "|target-link=" . $this->modifyTargetLink( $targetLink ); |
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$wikitext .= "|lang-code=" . Localizer::asBCP47FormattedLanguageCode( $languageCode ); |
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$wikitext .= "|lang-name=" . Language::fetchLanguageName( $languageCode ); |
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$templateText .= '{{' . $template . $wikitext . '}}'; |
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} |
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return $templateText; |
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} |
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private function modifyTargetLink( $targetLink ) { |
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if ( !$targetLink instanceOf Title ) { |
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$targetLink = Title::newFromText( $targetLink ); |
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} |
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return ( $targetLink->getNamespace() === NS_CATEGORY ? ':' : '' ) . $targetLink->getPrefixedText(); |
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} |
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private function createErrorMessageFor( $messageKey, $arg1 = '' ) { |
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return '<div class="smw-callout smw-callout-error">' . wfMessage( $messageKey, $arg1 )->inContentLanguage()->text() . '</div>'; |
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} |
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} |
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This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.