ExtensionMimeTypeGuesser.php

<?php

namespace Drupal\Core\File\MimeType;

use Drupal\Core\Extension\ModuleHandlerInterface;
use Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface as LegacyMimeTypeGuesserInterface;
use Symfony\Component\Mime\MimeTypeGuesserInterface;

/**
 * Makes possible to guess the MIME type of a file using its extension.
 */
class ExtensionMimeTypeGuesser implements MimeTypeGuesserInterface, LegacyMimeTypeGuesserInterface {
    
    /**
     * Default MIME extension mapping.
     *
     * @var array
     *   Array of mimetypes correlated to the extensions that relate to them.
     */
    protected $defaultMapping = [
        'mimetypes' => [
            0 => 'application/andrew-inset',
            1 => 'application/atom',
            2 => 'application/atomcat+xml',
            3 => 'application/atomserv+xml',
            4 => 'application/cap',
            5 => 'application/cu-seeme',
            6 => 'application/dsptype',
            350 => 'application/epub+zip',
            359 => 'application/gzip',
            7 => 'application/hta',
            8 => 'application/java-archive',
            9 => 'application/java-serialized-object',
            10 => 'application/java-vm',
            11 => 'application/mac-binhex40',
            12 => 'application/mathematica',
            13 => 'application/msaccess',
            14 => 'application/msword',
            15 => 'application/octet-stream',
            16 => 'application/oda',
            17 => 'application/ogg',
            18 => 'application/pdf',
            19 => 'application/pgp-keys',
            20 => 'application/pgp-signature',
            21 => 'application/pics-rules',
            22 => 'application/postscript',
            23 => 'application/rar',
            24 => 'application/rdf+xml',
            25 => 'application/rss+xml',
            26 => 'application/rtf',
            27 => 'application/smil',
            349 => 'application/vnd.amazon.ebook',
            28 => 'application/vnd.cinderella',
            29 => 'application/vnd.google-earth.kml+xml',
            30 => 'application/vnd.google-earth.kmz',
            31 => 'application/vnd.mozilla.xul+xml',
            32 => 'application/vnd.ms-excel',
            33 => 'application/vnd.ms-excel.addin.macroEnabled.12',
            34 => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
            35 => 'application/vnd.ms-excel.sheet.macroEnabled.12',
            36 => 'application/vnd.ms-excel.template.macroEnabled.12',
            37 => 'application/vnd.ms-pki.seccat',
            38 => 'application/vnd.ms-pki.stl',
            39 => 'application/vnd.ms-powerpoint',
            40 => 'application/vnd.ms-powerpoint.addin.macroEnabled.12',
            41 => 'application/vnd.ms-powerpoint.presentation.macroEnabled.12',
            42 => 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12',
            43 => 'application/vnd.ms-powerpoint.template.macroEnabled.12',
            44 => 'application/vnd.ms-word.document.macroEnabled.12',
            45 => 'application/vnd.ms-word.template.macroEnabled.12',
            46 => 'application/vnd.ms-xpsdocument',
            47 => 'application/vnd.oasis.opendocument.chart',
            48 => 'application/vnd.oasis.opendocument.database',
            49 => 'application/vnd.oasis.opendocument.formula',
            50 => 'application/vnd.oasis.opendocument.graphics',
            51 => 'application/vnd.oasis.opendocument.graphics-template',
            52 => 'application/vnd.oasis.opendocument.image',
            53 => 'application/vnd.oasis.opendocument.presentation',
            54 => 'application/vnd.oasis.opendocument.presentation-template',
            55 => 'application/vnd.oasis.opendocument.spreadsheet',
            56 => 'application/vnd.oasis.opendocument.spreadsheet-template',
            57 => 'application/vnd.oasis.opendocument.text',
            58 => 'application/vnd.oasis.opendocument.text-master',
            59 => 'application/vnd.oasis.opendocument.text-template',
            60 => 'application/vnd.oasis.opendocument.text-web',
            61 => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
            62 => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
            63 => 'application/vnd.openxmlformats-officedocument.presentationml.template',
            64 => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
            65 => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
            66 => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
            67 => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
            68 => 'application/vnd.rim.cod',
            69 => 'application/vnd.smaf',
            70 => 'application/vnd.stardivision.calc',
            71 => 'application/vnd.stardivision.chart',
            72 => 'application/vnd.stardivision.draw',
            73 => 'application/vnd.stardivision.impress',
            74 => 'application/vnd.stardivision.math',
            75 => 'application/vnd.stardivision.writer',
            76 => 'application/vnd.stardivision.writer-global',
            77 => 'application/vnd.sun.xml.calc',
            78 => 'application/vnd.sun.xml.calc.template',
            79 => 'application/vnd.sun.xml.draw',
            80 => 'application/vnd.sun.xml.draw.template',
            81 => 'application/vnd.sun.xml.impress',
            82 => 'application/vnd.sun.xml.impress.template',
            83 => 'application/vnd.sun.xml.math',
            84 => 'application/vnd.sun.xml.writer',
            85 => 'application/vnd.sun.xml.writer.global',
            86 => 'application/vnd.sun.xml.writer.template',
            87 => 'application/vnd.symbian.install',
            88 => 'application/vnd.visio',
            89 => 'application/vnd.wap.wbxml',
            90 => 'application/vnd.wap.wmlc',
            91 => 'application/vnd.wap.wmlscriptc',
            92 => 'application/wordperfect',
            93 => 'application/wordperfect5.1',
            94 => 'application/x-123',
            95 => 'application/x-7z-compressed',
            96 => 'application/x-abiword',
            97 => 'application/x-apple-diskimage',
            98 => 'application/x-bcpio',
            99 => 'application/x-bittorrent',
            100 => 'application/x-cab',
            101 => 'application/x-cbr',
            102 => 'application/x-cbz',
            103 => 'application/x-cdf',
            104 => 'application/x-cdlink',
            105 => 'application/x-chess-pgn',
            106 => 'application/x-cpio',
            107 => 'application/x-debian-package',
            108 => 'application/x-director',
            109 => 'application/x-dms',
            110 => 'application/x-doom',
            111 => 'application/x-dvi',
            112 => 'application/x-flac',
            113 => 'application/x-font',
            114 => 'application/x-freemind',
            115 => 'application/x-futuresplash',
            116 => 'application/x-gnumeric',
            117 => 'application/x-go-sgf',
            118 => 'application/x-graphing-calculator',
            119 => 'application/x-gtar',
            120 => 'application/x-hdf',
            121 => 'application/x-httpd-eruby',
            122 => 'application/x-httpd-php',
            123 => 'application/x-httpd-php-source',
            124 => 'application/x-httpd-php3',
            125 => 'application/x-httpd-php3-preprocessed',
            126 => 'application/x-httpd-php4',
            127 => 'application/x-ica',
            128 => 'application/x-internet-signup',
            129 => 'application/x-iphone',
            130 => 'application/x-iso9660-image',
            131 => 'application/x-java-jnlp-file',
            132 => 'application/javascript',
            133 => 'application/x-jmol',
            134 => 'application/x-kchart',
            135 => 'application/x-killustrator',
            136 => 'application/x-koan',
            137 => 'application/x-kpresenter',
            138 => 'application/x-kspread',
            139 => 'application/x-kword',
            140 => 'application/x-latex',
            141 => 'application/x-lha',
            142 => 'application/x-lyx',
            143 => 'application/x-lzh',
            144 => 'application/x-lzx',
            145 => 'application/x-maker',
            146 => 'application/x-mif',
            351 => 'application/x-mobipocket-ebook',
            352 => 'application/x-mobipocket-ebook',
            147 => 'application/x-ms-wmd',
            148 => 'application/x-ms-wmz',
            149 => 'application/x-msdos-program',
            150 => 'application/x-msi',
            151 => 'application/x-netcdf',
            152 => 'application/x-ns-proxy-autoconfig',
            153 => 'application/x-nwc',
            154 => 'application/x-object',
            155 => 'application/x-oz-application',
            156 => 'application/x-pkcs7-certreqresp',
            157 => 'application/x-pkcs7-crl',
            158 => 'application/x-python-code',
            159 => 'application/x-quicktimeplayer',
            160 => 'application/x-redhat-package-manager',
            161 => 'application/x-shar',
            162 => 'application/x-shockwave-flash',
            163 => 'application/x-stuffit',
            164 => 'application/x-sv4cpio',
            165 => 'application/x-sv4crc',
            166 => 'application/x-tar',
            167 => 'application/x-tcl',
            168 => 'application/x-tex-gf',
            169 => 'application/x-tex-pk',
            170 => 'application/x-texinfo',
            171 => 'application/x-trash',
            172 => 'application/x-troff',
            173 => 'application/x-troff-man',
            174 => 'application/x-troff-me',
            175 => 'application/x-troff-ms',
            176 => 'application/x-ustar',
            177 => 'application/x-wais-source',
            178 => 'application/x-wingz',
            179 => 'application/x-x509-ca-cert',
            180 => 'application/x-xcf',
            181 => 'application/x-xfig',
            182 => 'application/x-xpinstall',
            183 => 'application/xhtml+xml',
            184 => 'application/xml',
            185 => 'application/zip',
            186 => 'audio/basic',
            187 => 'audio/midi',
            346 => 'audio/mp4',
            188 => 'audio/mpeg',
            189 => 'audio/ogg',
            190 => 'audio/prs.sid',
            356 => 'audio/webm',
            191 => 'audio/x-aiff',
            192 => 'audio/x-gsm',
            354 => 'audio/x-matroska',
            193 => 'audio/x-mpegurl',
            194 => 'audio/x-ms-wax',
            195 => 'audio/x-ms-wma',
            196 => 'audio/x-pn-realaudio',
            197 => 'audio/x-realaudio',
            198 => 'audio/x-scpls',
            199 => 'audio/x-sd2',
            200 => 'audio/x-wav',
            201 => 'chemical/x-alchemy',
            202 => 'chemical/x-cache',
            203 => 'chemical/x-cache-csf',
            204 => 'chemical/x-cactvs-binary',
            205 => 'chemical/x-cdx',
            206 => 'chemical/x-cerius',
            207 => 'chemical/x-chem3d',
            208 => 'chemical/x-chemdraw',
            209 => 'chemical/x-cif',
            210 => 'chemical/x-cmdf',
            211 => 'chemical/x-cml',
            212 => 'chemical/x-compass',
            213 => 'chemical/x-crossfire',
            214 => 'chemical/x-csml',
            215 => 'chemical/x-ctx',
            216 => 'chemical/x-cxf',
            217 => 'chemical/x-embl-dl-nucleotide',
            218 => 'chemical/x-galactic-spc',
            219 => 'chemical/x-gamess-input',
            220 => 'chemical/x-gaussian-checkpoint',
            221 => 'chemical/x-gaussian-cube',
            222 => 'chemical/x-gaussian-input',
            223 => 'chemical/x-gaussian-log',
            224 => 'chemical/x-gcg8-sequence',
            225 => 'chemical/x-genbank',
            226 => 'chemical/x-hin',
            227 => 'chemical/x-isostar',
            228 => 'chemical/x-jcamp-dx',
            229 => 'chemical/x-kinemage',
            230 => 'chemical/x-macmolecule',
            231 => 'chemical/x-macromodel-input',
            232 => 'chemical/x-mdl-molfile',
            233 => 'chemical/x-mdl-rdfile',
            234 => 'chemical/x-mdl-rxnfile',
            235 => 'chemical/x-mdl-sdfile',
            236 => 'chemical/x-mdl-tgf',
            237 => 'chemical/x-mmcif',
            238 => 'chemical/x-mol2',
            239 => 'chemical/x-molconn-Z',
            240 => 'chemical/x-mopac-graph',
            241 => 'chemical/x-mopac-input',
            242 => 'chemical/x-mopac-out',
            243 => 'chemical/x-mopac-vib',
            244 => 'chemical/x-ncbi-asn1-ascii',
            245 => 'chemical/x-ncbi-asn1-binary',
            246 => 'chemical/x-ncbi-asn1-spec',
            247 => 'chemical/x-pdb',
            248 => 'chemical/x-rosdal',
            249 => 'chemical/x-swissprot',
            250 => 'chemical/x-vamas-iso14976',
            251 => 'chemical/x-vmd',
            252 => 'chemical/x-xtel',
            253 => 'chemical/x-xyz',
            254 => 'image/gif',
            255 => 'image/ief',
            256 => 'image/jpeg',
            257 => 'image/pcx',
            258 => 'image/png',
            259 => 'image/svg+xml',
            260 => 'image/tiff',
            261 => 'image/vnd.djvu',
            262 => 'image/vnd.microsoft.icon',
            263 => 'image/vnd.wap.wbmp',
            355 => 'image/webp',
            264 => 'image/x-cmu-raster',
            265 => 'image/x-coreldraw',
            266 => 'image/x-coreldrawpattern',
            267 => 'image/x-coreldrawtemplate',
            268 => 'image/x-corelphotopaint',
            269 => 'image/x-jg',
            270 => 'image/x-jng',
            271 => 'image/x-ms-bmp',
            272 => 'image/x-photoshop',
            273 => 'image/x-portable-anymap',
            274 => 'image/x-portable-bitmap',
            275 => 'image/x-portable-graymap',
            276 => 'image/x-portable-pixmap',
            277 => 'image/x-rgb',
            278 => 'image/x-xbitmap',
            279 => 'image/x-xpixmap',
            280 => 'image/x-xwindowdump',
            281 => 'message/rfc822',
            282 => 'model/iges',
            283 => 'model/mesh',
            284 => 'model/vrml',
            285 => 'text/calendar',
            286 => 'text/css',
            287 => 'text/csv',
            288 => 'text/h323',
            289 => 'text/html',
            290 => 'text/iuls',
            291 => 'text/mathml',
            292 => 'text/plain',
            293 => 'text/richtext',
            294 => 'text/scriptlet',
            295 => 'text/tab-separated-values',
            296 => 'text/texmacs',
            297 => 'text/vnd.sun.j2me.app-descriptor',
            298 => 'text/vnd.wap.wml',
            299 => 'text/vnd.wap.wmlscript',
            358 => 'text/vtt',
            300 => 'text/x-bibtex',
            301 => 'text/x-boo',
            302 => 'text/x-c++hdr',
            303 => 'text/x-c++src',
            304 => 'text/x-chdr',
            305 => 'text/x-component',
            306 => 'text/x-csh',
            307 => 'text/x-csrc',
            308 => 'text/x-diff',
            309 => 'text/x-dsrc',
            310 => 'text/x-haskell',
            311 => 'text/x-java',
            312 => 'text/x-literate-haskell',
            313 => 'text/x-moc',
            314 => 'text/x-pascal',
            315 => 'text/x-pcs-gcd',
            316 => 'text/x-perl',
            317 => 'text/x-python',
            318 => 'text/x-setext',
            319 => 'text/x-sh',
            320 => 'text/x-tcl',
            321 => 'text/x-tex',
            322 => 'text/x-vcalendar',
            323 => 'text/x-vcard',
            324 => 'video/3gpp',
            325 => 'video/dl',
            326 => 'video/dv',
            327 => 'video/fli',
            328 => 'video/gl',
            329 => 'video/mp4',
            330 => 'video/mpeg',
            331 => 'video/ogg',
            332 => 'video/quicktime',
            333 => 'video/vnd.mpegurl',
            357 => 'video/webm',
            347 => 'video/x-flv',
            334 => 'video/x-la-asf',
            348 => 'video/x-m4v',
            353 => 'video/x-matroska',
            335 => 'video/x-mng',
            336 => 'video/x-ms-asf',
            337 => 'video/x-ms-wm',
            338 => 'video/x-ms-wmv',
            339 => 'video/x-ms-wmx',
            340 => 'video/x-ms-wvx',
            341 => 'video/x-msvideo',
            342 => 'video/x-sgi-movie',
            343 => 'x-conference/x-cooltalk',
            344 => 'x-epoc/x-sisx-app',
            345 => 'x-world/x-vrml',
        ],
        // Extensions added to this list MUST be lower-case.
'extensions' => [
            'ez' => 0,
            'atom' => 1,
            'atomcat' => 2,
            'atomsrv' => 3,
            'cap' => 4,
            'pcap' => 4,
            'cu' => 5,
            'tsp' => 6,
            'hta' => 7,
            'jar' => 8,
            'ser' => 9,
            'class' => 10,
            'hqx' => 11,
            'nb' => 12,
            'mdb' => 13,
            'dot' => 14,
            'doc' => 14,
            'bin' => 15,
            'oda' => 16,
            'ogx' => 17,
            'pdf' => 18,
            'key' => 19,
            'pgp' => 20,
            'prf' => 21,
            'eps' => 22,
            'ai' => 22,
            'ps' => 22,
            'rar' => 23,
            'rdf' => 24,
            'rss' => 25,
            'rtf' => 26,
            'smi' => 27,
            'smil' => 27,
            'cdy' => 28,
            'kml' => 29,
            'kmz' => 30,
            'xul' => 31,
            'xlb' => 32,
            'xlt' => 32,
            'xls' => 32,
            'xlam' => 33,
            'xlsb' => 34,
            'xlsm' => 35,
            'xltm' => 36,
            'cat' => 37,
            'stl' => 38,
            'pps' => 39,
            'ppt' => 39,
            'ppam' => 40,
            'pptm' => 41,
            'ppsm' => 42,
            'potm' => 43,
            'docm' => 44,
            'dotm' => 45,
            'xps' => 46,
            'odc' => 47,
            'odb' => 48,
            'odf' => 49,
            'odg' => 50,
            'otg' => 51,
            'odi' => 52,
            'odp' => 53,
            'otp' => 54,
            'ods' => 55,
            'ots' => 56,
            'odt' => 57,
            'odm' => 58,
            'ott' => 59,
            'oth' => 60,
            'pptx' => 61,
            'ppsx' => 62,
            'potx' => 63,
            'xlsx' => 64,
            'xltx' => 65,
            'docx' => 66,
            'dotx' => 67,
            'cod' => 68,
            'mmf' => 69,
            'sdc' => 70,
            'sds' => 71,
            'sda' => 72,
            'sdd' => 73,
            'sdw' => 75,
            'sgl' => 76,
            'sxc' => 77,
            'stc' => 78,
            'sxd' => 79,
            'std' => 80,
            'sxi' => 81,
            'sti' => 82,
            'sxm' => 83,
            'sxw' => 84,
            'sxg' => 85,
            'stw' => 86,
            'sis' => 87,
            'vsd' => 88,
            'wbxml' => 89,
            'wmlc' => 90,
            'wmlsc' => 91,
            'wpd' => 92,
            'wp5' => 93,
            'wk' => 94,
            '7z' => 95,
            'abw' => 96,
            'dmg' => 97,
            'bcpio' => 98,
            'torrent' => 99,
            'cab' => 100,
            'cbr' => 101,
            'cbz' => 102,
            'cdf' => 103,
            'vcd' => 104,
            'pgn' => 105,
            'cpio' => 106,
            'udeb' => 107,
            'deb' => 107,
            'dir' => 108,
            'dxr' => 108,
            'dcr' => 108,
            'dms' => 109,
            'wad' => 110,
            'dvi' => 111,
            'flac' => 112,
            'pfa' => 113,
            'pfb' => 113,
            'pcf' => 113,
            'gsf' => 113,
            'pcf.z' => 113,
            'mm' => 114,
            'spl' => 115,
            'gnumeric' => 116,
            'sgf' => 117,
            'gcf' => 118,
            'taz' => 119,
            'gtar' => 119,
            'tgz' => 119,
            'hdf' => 120,
            'rhtml' => 121,
            'phtml' => 122,
            'pht' => 122,
            'php' => 122,
            'phps' => 123,
            'php3' => 124,
            'php3p' => 125,
            'php4' => 126,
            'ica' => 127,
            'ins' => 128,
            'isp' => 128,
            'iii' => 129,
            'iso' => 130,
            'jnlp' => 131,
            'js' => 132,
            'jmz' => 133,
            'chrt' => 134,
            'kil' => 135,
            'skp' => 136,
            'skd' => 136,
            'skm' => 136,
            'skt' => 136,
            'kpr' => 137,
            'kpt' => 137,
            'ksp' => 138,
            'kwd' => 139,
            'kwt' => 139,
            'latex' => 140,
            'lha' => 141,
            'lyx' => 142,
            'lzh' => 143,
            'lzx' => 144,
            'maker' => 145,
            'frm' => 145,
            'frame' => 145,
            'fm' => 145,
            'book' => 145,
            'fb' => 145,
            'fbdoc' => 145,
            'mif' => 146,
            'wmd' => 147,
            'wmz' => 148,
            'dll' => 149,
            'bat' => 149,
            'exe' => 149,
            'com' => 149,
            'msi' => 150,
            'nc' => 151,
            'pac' => 152,
            'nwc' => 153,
            'o' => 154,
            'oza' => 155,
            'p7r' => 156,
            'crl' => 157,
            'pyo' => 158,
            'pyc' => 158,
            'qtl' => 159,
            'rpm' => 160,
            'shar' => 161,
            'swf' => 162,
            'swfl' => 162,
            'sitx' => 163,
            'sit' => 163,
            'sv4cpio' => 164,
            'sv4crc' => 165,
            'tar' => 166,
            'gf' => 168,
            'pk' => 169,
            'texi' => 170,
            'texinfo' => 170,
            'sik' => 171,
            '~' => 171,
            'bak' => 171,
            '%' => 171,
            'old' => 171,
            't' => 172,
            'roff' => 172,
            'tr' => 172,
            'man' => 173,
            'me' => 174,
            'ms' => 175,
            'ustar' => 176,
            'src' => 177,
            'wz' => 178,
            'crt' => 179,
            'xcf' => 180,
            'fig' => 181,
            'xpi' => 182,
            'xht' => 183,
            'xhtml' => 183,
            'xml' => 184,
            'xsl' => 184,
            'zip' => 185,
            'au' => 186,
            'snd' => 186,
            'mid' => 187,
            'midi' => 187,
            'kar' => 187,
            'mpega' => 188,
            'mpga' => 188,
            'mp3' => 188,
            'mp2' => 188,
            'ogg' => 189,
            'oga' => 189,
            'spx' => 189,
            'sid' => 190,
            'aif' => 191,
            'aiff' => 191,
            'aifc' => 191,
            'gsm' => 192,
            'm3u' => 193,
            'wax' => 194,
            'wma' => 195,
            'rm' => 196,
            'ram' => 196,
            'ra' => 197,
            'pls' => 198,
            'sd2' => 199,
            'wav' => 200,
            'alc' => 201,
            'cac' => 202,
            'cache' => 202,
            'csf' => 203,
            'cascii' => 204,
            'cbin' => 204,
            'ctab' => 204,
            'cdx' => 205,
            'cer' => 206,
            'c3d' => 207,
            'chm' => 208,
            'cif' => 209,
            'cmdf' => 210,
            'cml' => 211,
            'cpa' => 212,
            'bsd' => 213,
            'csml' => 214,
            'csm' => 214,
            'ctx' => 215,
            'cxf' => 216,
            'cef' => 216,
            'emb' => 217,
            'embl' => 217,
            'spc' => 218,
            'gam' => 219,
            'inp' => 219,
            'gamin' => 219,
            'fchk' => 220,
            'fch' => 220,
            'cub' => 221,
            'gau' => 222,
            'gjf' => 222,
            'gjc' => 222,
            'gal' => 223,
            'gcg' => 224,
            'gen' => 225,
            'hin' => 226,
            'istr' => 227,
            'ist' => 227,
            'dx' => 228,
            'jdx' => 228,
            'kin' => 229,
            'mcm' => 230,
            'mmd' => 231,
            'mmod' => 231,
            'mol' => 232,
            'rd' => 233,
            'rxn' => 234,
            'sdf' => 235,
            'sd' => 235,
            'tgf' => 236,
            'mcif' => 237,
            'mol2' => 238,
            'b' => 239,
            'gpt' => 240,
            'mopcrt' => 241,
            'zmt' => 241,
            'mpc' => 241,
            'dat' => 241,
            'mop' => 241,
            'moo' => 242,
            'mvb' => 243,
            'prt' => 244,
            'aso' => 245,
            'val' => 245,
            'asn' => 246,
            'ent' => 247,
            'pdb' => 247,
            'ros' => 248,
            'sw' => 249,
            'vms' => 250,
            'vmd' => 251,
            'xtel' => 252,
            'xyz' => 253,
            'gif' => 254,
            'ief' => 255,
            'jpeg' => 256,
            'jpe' => 256,
            'jpg' => 256,
            'pcx' => 257,
            'png' => 258,
            'svgz' => 259,
            'svg' => 259,
            'tif' => 260,
            'tiff' => 260,
            'djvu' => 261,
            'djv' => 261,
            'ico' => 262,
            'wbmp' => 263,
            'ras' => 264,
            'cdr' => 265,
            'pat' => 266,
            'cdt' => 267,
            'cpt' => 268,
            'art' => 269,
            'jng' => 270,
            'bmp' => 271,
            'psd' => 272,
            'pnm' => 273,
            'pbm' => 274,
            'pgm' => 275,
            'ppm' => 276,
            'rgb' => 277,
            'xbm' => 278,
            'xpm' => 279,
            'xwd' => 280,
            'eml' => 281,
            'igs' => 282,
            'iges' => 282,
            'silo' => 283,
            'msh' => 283,
            'mesh' => 283,
            'icz' => 285,
            'ics' => 285,
            'css' => 286,
            'csv' => 287,
            '323' => 288,
            'html' => 289,
            'htm' => 289,
            'shtml' => 289,
            'uls' => 290,
            'mml' => 291,
            'txt' => 292,
            'pot' => 292,
            'text' => 292,
            'asc' => 292,
            'rtx' => 293,
            'wsc' => 294,
            'sct' => 294,
            'tsv' => 295,
            'ts' => 296,
            'tm' => 296,
            'jad' => 297,
            'wml' => 298,
            'wmls' => 299,
            'bib' => 300,
            'boo' => 301,
            'hpp' => 302,
            'hh' => 302,
            'h++' => 302,
            'hxx' => 302,
            'cxx' => 303,
            'cc' => 303,
            'cpp' => 303,
            'c++' => 303,
            'h' => 304,
            'htc' => 305,
            'csh' => 306,
            'c' => 307,
            'patch' => 308,
            'diff' => 308,
            'd' => 309,
            'hs' => 310,
            'java' => 311,
            'lhs' => 312,
            'moc' => 313,
            'pas' => 314,
            'p' => 314,
            'gcd' => 315,
            'pm' => 316,
            'pl' => 316,
            'py' => 317,
            'etx' => 318,
            'sh' => 319,
            'tk' => 320,
            'tcl' => 320,
            'cls' => 321,
            'ltx' => 321,
            'sty' => 321,
            'tex' => 321,
            'vcs' => 322,
            'vcf' => 323,
            '3gp' => 324,
            'dl' => 325,
            'dif' => 326,
            'dv' => 326,
            'fli' => 327,
            'gl' => 328,
            'mp4' => 329,
            'f4v' => 329,
            'f4p' => 329,
            'mpe' => 330,
            'mpeg' => 330,
            'mpg' => 330,
            'ogv' => 331,
            'qt' => 332,
            'mov' => 332,
            'mxu' => 333,
            'lsf' => 334,
            'lsx' => 334,
            'mng' => 335,
            'asx' => 336,
            'asf' => 336,
            'wm' => 337,
            'wmv' => 338,
            'wmx' => 339,
            'wvx' => 340,
            'avi' => 341,
            'movie' => 342,
            'ice' => 343,
            'sisx' => 344,
            'wrl' => 345,
            'vrm' => 345,
            'vrml' => 345,
            'f4a' => 346,
            'f4b' => 346,
            'm4a' => 346,
            'flv' => 347,
            'm4v' => 348,
            'azw' => 349,
            'epub' => 350,
            'mobi' => 351,
            'prc' => 352,
            'mkv' => 353,
            'mka' => 354,
            'webp' => 355,
            'weba' => 356,
            'webm' => 357,
            'vtt' => 358,
            'gz' => 359,
        ],
    ];
    
    /**
     * The MIME types mapping array after going through the module handler.
     *
     * @var array
     */
    protected $mapping;
    
    /**
     * The module handler.
     *
     * @var \Drupal\Core\Extension\ModuleHandlerInterface
     */
    protected $moduleHandler;
    
    /**
     * Constructs a new ExtensionMimeTypeGuesser.
     *
     * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
     *   The module handler.
     */
    public function __construct(ModuleHandlerInterface $module_handler) {
        $this->moduleHandler = $module_handler;
    }
    
    /**
     * {@inheritdoc}
     */
    public function guess($path) {
        @trigger_error(__METHOD__ . '() is deprecated in drupal:9.1.0 and is removed from drupal:10.0.0. Use ::guessMimeType() instead. See https://www.drupal.org/node/3133341', E_USER_DEPRECATED);
        return $this->guessMimeType($path);
    }
    
    /**
     * {@inheritdoc}
     */
    public function guessMimeType($path) : ?string {
        if ($this->mapping === NULL) {
            $mapping = $this->defaultMapping;
            // Allow modules to alter the default mapping.
            $this->moduleHandler
                ->alter('file_mimetype_mapping', $mapping);
            $this->mapping = $mapping;
        }
        $extension = '';
        $file_parts = explode('.', \Drupal::service('file_system')->basename($path));
        // Remove the first part: a full filename should not match an extension.
        array_shift($file_parts);
        // Iterate over the file parts, trying to find a match.
        // For my.awesome.image.jpeg, we try:
        // - jpeg
        // - image.jpeg, and
        // - awesome.image.jpeg
        while ($additional_part = array_pop($file_parts)) {
            $extension = strtolower($additional_part . ($extension ? '.' . $extension : ''));
            if (isset($this->mapping['extensions'][$extension])) {
                return $this->mapping['mimetypes'][$this->mapping['extensions'][$extension]];
            }
        }
        return 'application/octet-stream';
    }
    
    /**
     * Sets the mimetypes/extension mapping to use when guessing mimetype.
     *
     * @param array|null $mapping
     *   Passing a NULL mapping will cause guess() to use self::$defaultMapping.
     */
    public function setMapping(array $mapping = NULL) {
        $this->mapping = $mapping;
    }
    
    /**
     * {@inheritdoc}
     */
    public function isGuesserSupported() : bool {
        return TRUE;
    }

}