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<?php
namespace League\Flysystem\Util;
use League\MimeTypeDetection\FinfoMimeTypeDetector;
use League\MimeTypeDetection\GeneratedExtensionToMimeTypeMap;
use League\MimeTypeDetection\MimeTypeDetector;
/**
* @internal
*/
class MimeType
{
protected static $extensionToMimeTypeMap = GeneratedExtensionToMimeTypeMap::MIME_TYPES_FOR_EXTENSIONS;
protected static $detector;
public static function useDetector(MimeTypeDetector $detector)
{
static::$detector = $detector;
}
/**
* @return MimeTypeDetector
*/
protected static function detector()
{
if ( ! static::$detector instanceof MimeTypeDetector) {
static::$detector = new FinfoMimeTypeDetector();
}
return static::$detector;
}
/**
* Detects MIME Type based on given content.
*
* @param mixed $content
*
* @return string MIME Type
*/
public static function detectByContent($content)
{
if (is_string($content)) {
return static::detector()->detectMimeTypeFromBuffer($content);
}
return 'text/plain';
}
/**
* Detects MIME Type based on file extension.
*
* @param string $extension
*
* @return string MIME Type
*/
public static function detectByFileExtension($extension)
{
return static::detector()->detectMimeTypeFromPath('artificial.' . $extension) ?: 'text/plain';
}
/**
* @param string $filename
*
* @return string MIME Type
*/
public static function detectByFilename($filename)
{
return static::detector()->detectMimeTypeFromPath($filename) ?: 'text/plain';
}
/**
* @return array Map of file extension to MIME Type
*/
public static function getExtensionToMimeTypeMap()
{
return static::$extensionToMimeTypeMap;
}
}