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<?php
namespace SMW\Lang;
use RuntimeException;
/**
* @license GNU GPL v2+
* @since 2.5
*
* @author mwjames
*/
class LanguageContents {
/**
* @var JsonContentsFileReader
*/
private $jsonContentsFileReader;
/**
* @var FallbackFinder
*/
private $fallbackFinder;
/**
* @var array
*/
private $contents = [];
/**
* @since 2.5
*
* @param JsonContentsFileReader $jsonContentsFileReader
* @param FallbackFinder $fallbackFinder
*/
public function __construct( JsonContentsFileReader $jsonContentsFileReader, FallbackFinder $fallbackFinder ) {
$this->jsonContentsFileReader = $jsonContentsFileReader;
$this->fallbackFinder = $fallbackFinder;
}
/**
* @since 2.5
*
* @return string
*/
public function getCanonicalFallbackLanguageCode() {
return $this->fallbackFinder->getCanonicalFallbackLanguageCode();
}
/**
* @since 2.5
*
* @param string $languageCode
*
* @return boolean
*/
public function isLoaded( $languageCode ) {
return isset( $this->contents[$languageCode] ) || array_key_exists( $languageCode, $this->contents );
}
/**
* @since 2.5
*
* @param string $languageCode
*
* @return boolean
*/
public function load( $languageCode ) {
if ( !$this->isLoaded( $languageCode ) && !$this->jsonContentsFileReader->canReadByLanguageCode( $languageCode ) ) {
$languageCode = $this->fallbackFinder->getFallbackLanguageBy( $languageCode );
}
if ( !$this->isLoaded( $languageCode ) ) {
$this->contents[$languageCode] = $this->jsonContentsFileReader->readByLanguageCode( $languageCode );
}
}
/**
* @since 2.5
*
* @param string $id
* @param string $languageCode
*
* @return array|string|false
*/
public function get( $id, $languageCode ) {
return $this->matchLanguage( $languageCode, $id );
}
private function matchLanguage( $languageCode, $id ) {
$canonicalFallbackLanguageCode = $this->fallbackFinder->getCanonicalFallbackLanguageCode();
if ( !isset( $this->contents[$languageCode] ) || $this->contents[$languageCode] === [] ) {
// In case a language has no matching file
try {
$this->contents[$languageCode] = $this->jsonContentsFileReader->readByLanguageCode( $languageCode );
} catch ( RuntimeException $e ) {
$this->contents[$languageCode] = [];
$languageCode = $canonicalFallbackLanguageCode;
}
}
$depth = 1;
// There is certainly a better (meaning generic) way to do this yet with
// only a limited depth, doing a recursive traversal will not yield an
// advantage
if ( strpos( $id, '.' ) !== false ) {
$keys = explode( '.', $id );
$depth = count( $keys );
}
if ( $depth == 1 && isset( $this->contents[$languageCode][$id] ) && $this->contents[$languageCode][$id] !== [] ) {
return $this->contents[$languageCode][$id];
}
if ( $depth == 2 && isset( $this->contents[$languageCode][$keys[0]][$keys[1]] ) && $this->contents[$languageCode][$keys[0]][$keys[1]] !== [] ) {
return $this->contents[$languageCode][$keys[0]][$keys[1]];
}
if ( $depth == 3 && isset( $this->contents[$languageCode][$keys[0]][$keys[1]][$keys[2]] ) && $this->contents[$languageCode][$keys[0]][$keys[1]][$keys[2]] !== [] ) {
return $this->contents[$languageCode][$keys[0]][$keys[1]][$keys[2]];
}
if ( $languageCode !== $canonicalFallbackLanguageCode ) {
return $this->matchLanguage( $this->fallbackFinder->getFallbackLanguageBy( $languageCode ), $id );
}
return $this->matchCanonicalLanguage( $canonicalFallbackLanguageCode, $id );
}
private function matchCanonicalLanguage( $languageCode, $id ) {
$depth = 1;
if ( strpos( $id, '.' ) !== false ) {
$keys = explode( '.', $id );
$depth = count( $keys );
}
// Last resort before throwing the towel, make sure we really have
// something when the default FallbackLanguageCode is used
if ( $depth == 1 && !isset( $this->contents[$languageCode][$id] ) ) {
$this->contents[$languageCode] = $this->jsonContentsFileReader->readByLanguageCode( $languageCode, true );
}
if ( $depth == 1 && isset( $this->contents[$languageCode][$id] ) ) {
return $this->contents[$languageCode][$id];
}
if ( $depth == 2 && !isset( $this->contents[$languageCode][$keys[0]][$keys[1]] ) ) {
$this->contents[$languageCode] = $this->jsonContentsFileReader->readByLanguageCode( $languageCode, true );
}
if ( $depth == 2 && isset( $this->contents[$languageCode][$keys[0]][$keys[1]] ) ) {
return $this->contents[$languageCode][$keys[0]][$keys[1]];
}
if ( $depth == 3 && !isset( $this->contents[$languageCode][$keys[0]][$keys[1]][$keys[2]] ) ) {
$this->contents[$languageCode] = $this->jsonContentsFileReader->readByLanguageCode( $languageCode, true );
}
if ( $depth == 3 && isset( $this->contents[$languageCode][$keys[0]][$keys[1]][$keys[2]] ) ) {
return $this->contents[$languageCode][$keys[0]][$keys[1]][$keys[2]];
}
throw new RuntimeException( "Unknown or invalid `{$id}` id for `{$languageCode}`" );
}
}
|
