mime.js

/*
 From Zip.js, by Gildas Lormeau
edited down
 */

var table = {
	"application" : {
		"ecmascript" : [ "es", "ecma" ],
		"javascript" : "js",
		"ogg" : "ogx",
		"pdf" : "pdf",
		"postscript" : [ "ps", "ai", "eps", "epsi", "epsf", "eps2", "eps3" ],
		"rdf+xml" : "rdf",
		"smil" : [ "smi", "smil" ],
		"xhtml+xml" : [ "xhtml", "xht" ],
		"xml" : [ "xml", "xsl", "xsd", "opf", "ncx" ],
		"zip" : "zip",
		"x-httpd-eruby" : "rhtml",
		"x-latex" : "latex",
		"x-maker" : [ "frm", "maker", "frame", "fm", "fb", "book", "fbdoc" ],
		"x-object" : "o",
		"x-shockwave-flash" : [ "swf", "swfl" ],
		"x-silverlight" : "scr",
		"epub+zip" : "epub",
		"font-tdpfr" : "pfr",
		"inkml+xml" : [ "ink", "inkml" ],
		"json" : "json",
		"jsonml+json" : "jsonml",
		"mathml+xml" : "mathml",
		"metalink+xml" : "metalink",
		"mp4" : "mp4s",
		// "oebps-package+xml" : "opf",
		"omdoc+xml" : "omdoc",
		"oxps" : "oxps",
		"vnd.amazon.ebook" : "azw",
		"widget" : "wgt",
		// "x-dtbncx+xml" : "ncx",
		"x-dtbook+xml" : "dtb",
		"x-dtbresource+xml" : "res",
		"x-font-bdf" : "bdf",
		"x-font-ghostscript" : "gsf",
		"x-font-linux-psf" : "psf",
		"x-font-otf" : "otf",
		"x-font-pcf" : "pcf",
		"x-font-snf" : "snf",
		"x-font-ttf" : [ "ttf", "ttc" ],
		"x-font-type1" : [ "pfa", "pfb", "pfm", "afm" ],
		"x-font-woff" : "woff",
		"x-mobipocket-ebook" : [ "prc", "mobi" ],
		"x-mspublisher" : "pub",
		"x-nzb" : "nzb",
		"x-tgif" : "obj",
		"xaml+xml" : "xaml",
		"xml-dtd" : "dtd",
		"xproc+xml" : "xpl",
		"xslt+xml" : "xslt",
		"internet-property-stream" : "acx",
		"x-compress" : "z",
		"x-compressed" : "tgz",
		"x-gzip" : "gz",
	},
	"audio" : {
		"flac" : "flac",
		"midi" : [ "mid", "midi", "kar", "rmi" ],
		"mpeg" : [ "mpga", "mpega", "mp2", "mp3", "m4a", "mp2a", "m2a", "m3a" ],
		"mpegurl" : "m3u",
		"ogg" : [ "oga", "ogg", "spx" ],
		"x-aiff" : [ "aif", "aiff", "aifc" ],
		"x-ms-wma" : "wma",
		"x-wav" : "wav",
		"adpcm" : "adp",
		"mp4" : "mp4a",
		"webm" : "weba",
		"x-aac" : "aac",
		"x-caf" : "caf",
		"x-matroska" : "mka",
		"x-pn-realaudio-plugin" : "rmp",
		"xm" : "xm",
		"mid" : [ "mid", "rmi" ]
	},
	"image" : {
		"gif" : "gif",
		"ief" : "ief",
		"jpeg" : [ "jpeg", "jpg", "jpe" ],
		"pcx" : "pcx",
		"png" : "png",
		"svg+xml" : [ "svg", "svgz" ],
		"tiff" : [ "tiff", "tif" ],
		"x-icon" : "ico",
		"bmp" : "bmp",
		"webp" : "webp",
		"x-pict" : [ "pic", "pct" ],
		"x-tga" : "tga",
		"cis-cod" : "cod"
	},
	"text" : {
		"cache-manifest" : [ "manifest", "appcache" ],
		"css" : "css",
		"csv" : "csv",
		"html" : [ "html", "htm", "shtml", "stm" ],
		"mathml" : "mml",
		"plain" : [ "txt", "text", "brf", "conf", "def", "list", "log", "in", "bas" ],
		"richtext" : "rtx",
		"tab-separated-values" : "tsv",
		"x-bibtex" : "bib"
	},
	"video" : {
		"mpeg" : [ "mpeg", "mpg", "mpe", "m1v", "m2v", "mp2", "mpa", "mpv2" ],
		"mp4" : [ "mp4", "mp4v", "mpg4" ],
		"quicktime" : [ "qt", "mov" ],
		"ogg" : "ogv",
		"vnd.mpegurl" : [ "mxu", "m4u" ],
		"x-flv" : "flv",
		"x-la-asf" : [ "lsf", "lsx" ],
		"x-mng" : "mng",
		"x-ms-asf" : [ "asf", "asx", "asr" ],
		"x-ms-wm" : "wm",
		"x-ms-wmv" : "wmv",
		"x-ms-wmx" : "wmx",
		"x-ms-wvx" : "wvx",
		"x-msvideo" : "avi",
		"x-sgi-movie" : "movie",
		"x-matroska" : [ "mpv", "mkv", "mk3d", "mks" ],
		"3gpp2" : "3g2",
		"h261" : "h261",
		"h263" : "h263",
		"h264" : "h264",
		"jpeg" : "jpgv",
		"jpm" : [ "jpm", "jpgm" ],
		"mj2" : [ "mj2", "mjp2" ],
		"vnd.ms-playready.media.pyv" : "pyv",
		"vnd.uvvu.mp4" : [ "uvu", "uvvu" ],
		"vnd.vivo" : "viv",
		"webm" : "webm",
		"x-f4v" : "f4v",
		"x-m4v" : "m4v",
		"x-ms-vob" : "vob",
		"x-smv" : "smv"
	}
};

var mimeTypes = (function() {
	var type, subtype, val, index, mimeTypes = {};
	for (type in table) {
		if (table.hasOwnProperty(type)) {
			for (subtype in table[type]) {
				if (table[type].hasOwnProperty(subtype)) {
					val = table[type][subtype];
					if (typeof val == "string") {
						mimeTypes[val] = type + "/" + subtype;
					} else {
						for (index = 0; index < val.length; index++) {
							mimeTypes[val[index]] = type + "/" + subtype;
						}
					}
				}
			}
		}
	}
	return mimeTypes;
})();

var defaultValue = "text/plain";//"application/octet-stream";

function lookup(filename) {
	return filename && mimeTypes[filename.split(".").pop().toLowerCase()] || defaultValue;
};

export default { lookup };