PHP实例开发源码-Symfony web应用php框架.zip

<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Mime; use Symfony\Component\Mime\Exception\LogicException; /** * Manages MIME types and file extensions. * * For MIME type guessing, you can register custom guessers * by calling the registerGuesser() method. * Custom guessers are always called before any default ones: * * $guesser = new MimeTypes(); * $guesser->registerGuesser(new MyCustomMimeTypeGuesser()); * * If you want to change the order of the default guessers, just re-register your * preferred one as a custom one. The last registered guesser is preferred over * previously registered ones. * * Re-registering a built-in guesser also allows you to configure it: * * $guesser = new MimeTypes(); * $guesser->registerGuesser(new FileinfoMimeTypeGuesser('/path/to/magic/file')); * * @author Fabien Potencier <fabien@symfony.com> */ final class MimeTypes implements MimeTypesInterface { private $extensions = []; private $mimeTypes = []; /** * @var MimeTypeGuesserInterface[] */ private $guessers = []; private static $default; public function __construct(array $map = []) { foreach ($map as $mimeType => $extensions) { $this->extensions[$mimeType] = $extensions; foreach ($extensions as $extension) { $this->mimeTypes[$extension][] = $mimeType; } } $this->registerGuesser(new FileBinaryMimeTypeGuesser()); $this->registerGuesser(new FileinfoMimeTypeGuesser()); } public static function setDefault(self $default) { self::$default = $default; } public static function getDefault(): self { return self::$default ?? self::$default = new self(); } /** * Registers a MIME type guesser. * * The last registered guesser has precedence over the other ones. */ public function registerGuesser(MimeTypeGuesserInterface $guesser) { array_unshift($this->guessers, $guesser); } /** * {@inheritdoc} */ public function getExtensions(string $mimeType): array { if ($this->extensions) { $extensions = $this->extensions[$mimeType] ?? $this->extensions[$lcMimeType = strtolower($mimeType)] ?? null; } return $extensions ?? self::$map[$mimeType] ?? self::$map[$lcMimeType ?? strtolower($mimeType)] ?? []; } /** * {@inheritdoc} */ public function getMimeTypes(string $ext): array { if ($this->mimeTypes) { $mimeTypes = $this->mimeTypes[$ext] ?? $this->mimeTypes[$lcExt = strtolower($ext)] ?? null; } return $mimeTypes ?? self::$reverseMap[$ext] ?? self::$reverseMap[$lcExt ?? strtolower($ext)] ?? []; } /** * {@inheritdoc} */ public function isGuesserSupported(): bool { foreach ($this->guessers as $guesser) { if ($guesser->isGuesserSupported()) { return true; } } return false; } /** * {@inheritdoc} * * The file is passed to each registered MIME type guesser in reverse order * of their registration (last registered is queried first). Once a guesser * returns a value that is not null, this method terminates and returns the * value. */ public function guessMimeType(string $path): ?string { foreach ($this->guessers as $guesser) { if (!$guesser->isGuesserSupported()) { continue; } if (null !== $mimeType = $guesser->guessMimeType($path)) { return $mimeType; } } if (!$this->isGuesserSupported()) { throw new LogicException('Unable to guess the MIME type as no guessers are available (have you enabled the php_fileinfo extension?).'); } return null; } /** * A map of MIME types and their default extensions. * * Updated from upstream on 2019-01-16 * * @see Resources/bin/update_mime_types.php */ private static $map = [ 'application/acrobat' => ['pdf'], 'application/andrew-inset' => ['ez'], 'application/annodex' => ['anx'], 'application/applixware' => ['aw'], 'application/atom+xml' => ['atom'], 'application/atomcat+xml' => ['atomcat'], 'application/atomdeleted+xml' => ['atomdeleted'], 'application/atomsvc+xml' => ['atomsvc'], 'application/atsc-dwd+xml' => ['dwd'], 'application/atsc-held+xml' => ['held'], 'application/atsc-rsat+xml' => ['rsat'], 'application/bdoc' => ['bdoc'], 'application/calendar+xml' => ['xcs'], 'application/ccxml+xml' => ['ccxml'], 'application/cdfx+xml' => ['cdfx'], 'application/cdmi-capability' => ['cdmia'], 'application/cdmi-container' => ['cdmic'], 'application/cdmi-domain' => ['cdmid'], 'application/cdmi-object' => ['cdmio'], 'application/cdmi-queue' => ['cdmiq'], 'application/cdr' => ['cdr'], 'application/coreldraw' => ['cdr'], 'application/csv' => ['csv'], 'application/cu-seeme' => ['cu'], 'application/dash+xml' => ['mpd'], 'application/davmount+xml' => ['davmount'], 'application/dbase' => ['dbf'], 'application/dbf' => ['dbf'], 'application/dicom' => ['dcm'], 'application/docbook+xml' => ['dbk', 'docbook'], 'application/dssc+der' => ['dssc'], 'application/dssc+xml' => ['xdssc'], 'application/ecmascript' => ['ecma', 'es'], 'application/emf' => ['emf'], 'application/emma+xml' => ['emma'], 'application/emotionml+xml' => ['emotionml'], 'application/epub+zip' => ['epub'], 'application/exi' => ['exi'], 'application/fdt+xml' => ['fdt'], 'application/font-tdpfr' => ['pfr'], 'application/font-woff' => ['woff'], 'application/futuresplash' => ['swf', 'spl'], 'application/geo+json' => ['geojson', 'geo.json'], 'application/gml+xml' => ['gml'], 'application/gnunet-directory' => ['gnd'], 'application/gpx' => ['gpx'], 'application/gpx+xml' => ['gpx'], 'application/gxf' => ['gxf'], 'application/gzip' => ['gz'], 'application/hjson' => ['hjson'], 'application/hyperstudio' => ['stk'], 'application/ico' => ['ico'], 'application/ics' => ['vcs', 'ics'], 'application/illustrator' => ['ai'], 'application/inkml+xml' => ['ink', 'inkml'], 'application/ipfix' => ['ipfix'], 'application/its+xml' => ['its'], 'application/java' => ['class'], 'application/java-archive' => ['jar', 'war', 'ear'], 'application/java-byte-code' => ['class'], 'application/java-serialized-object' => ['ser'], 'application/java-vm' => ['class'], 'application/javascript' => ['js', 'mjs', 'jsm'], 'application/jrd+json' => ['jrd'], 'application/json' => ['json', 'map'], 'application/json-patch+json' => ['json-patch'], 'application/json5' => ['json5'], 'application/jsonml+json' => ['jsonml'], 'application/ld+json' => ['jsonld'], 'application/lgr+xml' => ['lgr'], 'application/lost+xml' => ['lostxml'], 'application/lotus123' => ['123', 'wk1', 'wk3', 'wk4', 'wks'], 'application/m3u' => ['m3u', 'm3u8', 'vlc'], 'application/mac-binhex40' => ['hqx'], 'application/mac-compactpro' => ['cpt'], 'application/mads+xml' => ['mads'], 'application/manifest+json' => ['webmanifest'], 'application/marc' => ['mrc'], 'application/marcxml+xml' => ['mrcx'],