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|
<?php
namespace SMW\Lang;
use Onoi\Cache\Cache;
use Onoi\Cache\NullCache;
use RuntimeException;
use SMW\Utils\ErrorCodeFormatter;
/**
* @license GNU GPL v2+
* @since 2.5
*
* @author mwjames
*/
class JsonContentsFileReader {
/**
* @var array
*/
private static $contents = [];
/**
* @var string
*/
private $languageFileDir = '';
/**
* @var Cache
*/
private $cache;
/**
* @var boolean
*/
private $skipCache = false;
/**
* @var integer
*/
private $ttl = 604800; // 7 * 24 * 3600
/**
* @since 2.5
*
* @param Cache|null $cache
* @param string $languageFileDir
*/
public function __construct( Cache $cache = null, $languageFileDir = '' ) {
$this->cache = $cache;
$this->languageFileDir = $languageFileDir;
if ( $this->cache === null ) {
$this->cache = new NullCache();
}
if ( $this->languageFileDir === '' ) {
$this->languageFileDir = $GLOBALS['smwgExtraneousLanguageFileDir'];
}
}
/**
* @since 2.5
*/
public static function clear() {
self::$contents = [];
}
/**
* @since 2.5
*/
public function skipCache() {
$this->skipCache = true;
}
/**
* @since 1.2.0
*
* @return integer
*/
public function getFileModificationTime( $languageCode ) {
return filemtime( $this->getLanguageFile( $languageCode ) );
}
/**
* @since 2.5
*
* @param string $languageCode
* @param boolean $readFromFile
*
* @return boolean
*/
public function canReadByLanguageCode( $languageCode ) {
$canReadByLanguageCode = '';
try {
$canReadByLanguageCode = $this->getLanguageFile( $languageCode );
} catch ( \Exception $e ) {
$canReadByLanguageCode = '';
}
return $canReadByLanguageCode !== '';
}
/**
* @since 2.5
*
* @param string $languageCode
* @param array $contents
*/
public function writeByLanguageCode( $languageCode, $contents ) {
$languageCode = strtolower( trim( $languageCode ) );
file_put_contents(
$this->getLanguageFile( $languageCode ),
json_encode( $contents, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE )
);
}
/**
* @since 2.5
*
* @param string $languageCode
* @param boolean $readFromFile
*
* @return array
* @throws RuntimeException
*/
public function readByLanguageCode( $languageCode, $readFromFile = false ) {
$languageCode = strtolower( trim( $languageCode ) );
if ( !$readFromFile && isset( self::$contents[$languageCode] ) ) {
return self::$contents[$languageCode];
}
$cacheKey = smwfCacheKey(
'smw:lang',
[
$languageCode,
$this->getFileModificationTime( $languageCode ),
$this->ttl
]
);
if ( !$readFromFile && !$this->skipCache && !isset( self::$contents[$languageCode] ) && $this->cache->contains( $cacheKey ) ) {
self::$contents[$languageCode] = $this->cache->fetch( $cacheKey );
}
if ( $readFromFile || !isset( self::$contents[$languageCode] ) ) {
self::$contents[$languageCode] = $this->readJSONFile( $languageCode, $cacheKey );
}
return self::$contents[$languageCode];
}
protected function readJSONFile( $languageCode, $cacheKey ) {
$contents = json_decode(
file_get_contents( $this->getLanguageFile( $languageCode ) ),
true
);
if ( $contents !== null && json_last_error() === JSON_ERROR_NONE ) {
$this->cache->save( $cacheKey, $contents, $this->ttl );
return $contents;
}
throw new RuntimeException( ErrorCodeFormatter::getMessageFromJsonErrorCode( json_last_error() ) );
}
private function getLanguageFile( $languageCode ) {
$file = str_replace( [ '\\', '/' ], DIRECTORY_SEPARATOR, $this->languageFileDir . '/' . $languageCode . '.json' );
if ( is_readable( $file ) ) {
return $file;
}
throw new RuntimeException( "Expected a {$file} file" );
}
}
|
