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<?php |
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namespace SESP; |
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use Onoi\Cache\Cache; |
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use Onoi\Cache\NullCache; |
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use SMW\Message; |
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/** |
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* @ingroup SESP |
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* |
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* @license GNU GPL v2+ |
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* @since 2.0 |
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* |
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* @author mwjames |
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*/ |
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class LabelFetcher { |
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/** |
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* Namespace of the cache instance |
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*/ |
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const LABEL_CACHE_NAMESPACE = 'sesp:labels'; |
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/** |
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* @var Cache |
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*/ |
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private $cache; |
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/** |
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* @var string |
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*/ |
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private $languageCode = 'en'; |
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/** |
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* @var string |
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*/ |
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private $labelCacheVersion = 0; |
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/** |
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* @since 2.0 |
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* |
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* @param Cache|null $cache |
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* @param string $languageCode |
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*/ |
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public function __construct( Cache $cache = null, $languageCode = 'en' ) { |
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$this->cache = $cache; |
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$this->languageCode = $languageCode; |
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if ( $this->cache === null ) { |
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$this->cache = new NullCache(); |
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} |
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} |
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/** |
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* @since 2.0 |
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* |
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* @param integer|string $labelCacheVersion |
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*/ |
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public function setLabelCacheVersion( $labelCacheVersion ) { |
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$this->labelCacheVersion = $labelCacheVersion; |
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} |
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/** |
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* @since 2.0 |
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* |
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* @param string $key |
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* |
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* @return string |
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*/ |
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public function getLabel( $key ) { |
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return Message::get( $key, null, Message::USER_LANGUAGE ); |
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} |
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/** |
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* @since 2.0 |
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* |
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* @param PropertyDefinitions $propertyDefinitions |
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* |
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* @return array |
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*/ |
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public function getLabelsFrom( PropertyDefinitions $propertyDefinitions ) { |
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$hash = smwfCacheKey( |
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self::LABEL_CACHE_NAMESPACE, |
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[ |
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$propertyDefinitions, |
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$this->languageCode, |
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$this->labelCacheVersion |
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] |
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); |
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if ( $this->labelCacheVersion !== false && ( $labels = $this->cache->fetch( $hash ) ) !== false ) { |
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return $labels; |
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} |
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$labels = []; |
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$exifDefinitions = []; |
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foreach ( $propertyDefinitions as $key => $definition ) { |
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$this->matchLabel( $labels, $definition ); |
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} |
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foreach ( $propertyDefinitions->safeGet( '_EXIF', [] ) as $key => $definition ) { |
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$this->matchLabel( $labels, $definition ); |
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} |
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if ( $labels !== [] ) { |
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$this->cache->save( $hash, $labels, 3600 * 24 ); |
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} |
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return $labels; |
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} |
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private function matchLabel( &$labels, $definition ) { |
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if ( !isset( $definition['id'] ) ) { |
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return; |
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} |
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$alias = 'sesp-property-unknown-label'; |
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if ( isset( $definition['alias'] ) ) { |
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$alias = $definition['alias']; |
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} |
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$labels[$definition['id']] = Message::get( $alias, null, $this->languageCode ); |
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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.