⚡Improve ctx.Is performance

utils.go

@@ -573,236 +573,3 @@ const (
 	HeaderXRobotsTag                      = "X-Robots-Tag"
 	HeaderXUACompatible                   = "X-UA-Compatible"
 )
-
-// MIME types were copied from https://github.com/nginx/nginx/blob/master/conf/mime.types
-func mimeExtensions(ext string) string {
-	switch ext {
-	case "html":
-		return "text/html"
-	case "htm":
-		return "text/html"
-	case "shtml":
-		return "text/html"
-	case "css":
-		return "text/css"
-	case "gif":
-		return "image/gif"
-	case "jpeg":
-		return "image/jpeg"
-	case "jpg":
-		return "image/jpeg"
-	case "xml":
-		return "application/xml"
-	case "js":
-		return "application/javascript"
-	case "atom":
-		return "application/atom+xml"
-	case "rss":
-		return "application/rss+xml"
-	case "mml":
-		return "text/mathml"
-	case "txt":
-		return "text/plain"
-	case "jad":
-		return "text/vnd.sun.j2me.app-descriptor"
-	case "wml":
-		return "text/vnd.wap.wml"
-	case "htc":
-		return "text/x-component"
-	case "png":
-		return "image/png"
-	case "svg":
-		return "image/svg+xml"
-	case "svgz":
-		return "image/svg+xml"
-	case "tif":
-		return "image/tiff"
-	case "tiff":
-		return "image/tiff"
-	case "wbmp":
-		return "image/vnd.wap.wbmp"
-	case "webp":
-		return "image/webp"
-	case "ico":
-		return "image/x-icon"
-	case "jng":
-		return "image/x-jng"
-	case "bmp":
-		return "image/x-ms-bmp"
-	case "woff":
-		return "font/woff"
-	case "woff2":
-		return "font/woff2"
-	case "jar":
-		return "application/java-archive"
-	case "war":
-		return "application/java-archive"
-	case "ear":
-		return "application/java-archive"
-	case "json":
-		return "application/json"
-	case "hqx":
-		return "application/mac-binhex40"
-	case "doc":
-		return "application/msword"
-	case "pdf":
-		return "application/pdf"
-	case "ps":
-		return "application/postscript"
-	case "eps":
-		return "application/postscript"
-	case "ai":
-		return "application/postscript"
-	case "rtf":
-		return "application/rtf"
-	case "m3u8":
-		return "application/vnd.apple.mpegurl"
-	case "kml":
-		return "application/vnd.google-earth.kml+xml"
-	case "kmz":
-		return "application/vnd.google-earth.kmz"
-	case "xls":
-		return "application/vnd.ms-excel"
-	case "eot":
-		return "application/vnd.ms-fontobject"
-	case "ppt":
-		return "application/vnd.ms-powerpoint"
-	case "odg":
-		return "application/vnd.oasis.opendocument.graphics"
-	case "odp":
-		return "application/vnd.oasis.opendocument.presentation"
-	case "ods":
-		return "application/vnd.oasis.opendocument.spreadsheet"
-	case "odt":
-		return "application/vnd.oasis.opendocument.text"
-	case "wmlc":
-		return "application/vnd.wap.wmlc"
-	case "7z":
-		return "application/x-7z-compressed"
-	case "cco":
-		return "application/x-cocoa"
-	case "jardiff":
-		return "aplication/x-java-archive-diff"
-	case "jnlp":
-		return "application/x-java-jnlp-file"
-	case "run":
-		return "application/x-makeself"
-	case "pl":
-		return "application/x-perl"
-	case "pm":
-		return "application/x-perl"
-	case "prc":
-		return "application/x-pilot"
-	case "pdb":
-		return "application/x-pilot"
-	case "rar":
-		return "application/x-rar-compressed"
-	case "rpm":
-		return "application/x-redhat-package-manager"
-	case "sea":
-		return "application/x-sea"
-	case "swf":
-		return "application/x-shockwave-flash"
-	case "sit":
-		return "application/x-stuffit"
-	case "tcl":
-		return "application/x-tcl"
-	case "tk":
-		return "application/x-tcl"
-	case "der":
-		return "application/x-x509-ca-cert"
-	case "pem":
-		return "application/x-x509-ca-cert"
-	case "crt":
-		return "application/x-x509-ca-cert"
-	case "xpi":
-		return "application/x-xpinstall"
-	case "xhtml":
-		return "application/xhtml+xml"
-	case "xspf":
-		return "application/xspf+xml"
-	case "zip":
-		return "application/zip"
-	case "bin":
-		return "application/octet-stream"
-	case "exe":
-		return "application/octet-stream"
-	case "dll":
-		return "application/octet-stream"
-	case "deb":
-		return "application/octet-stream"
-	case "dmg":
-		return "application/octet-stream"
-	case "iso":
-		return "application/octet-stream"
-	case "img":
-		return "application/octet-stream"
-	case "msi":
-		return "application/octet-stream"
-	case "msp":
-		return "application/octet-stream"
-	case "msm":
-		return "application/octet-stream"
-	case "mid":
-		return "audio/midi"
-	case "midi":
-		return "audio/midi"
-	case "kar":
-		return "audio/midi"
-	case "mp3":
-		return "audio/mpeg"
-	case "ogg":
-		return "audio/ogg"
-	case "m4a":
-		return "audio/x-m4a"
-	case "ra":
-		return "audio/x-realaudio"
-	case "3gpp":
-		return "video/3gpp"
-	case "3gp":
-		return "video/3gpp"
-	case "ts":
-		return "video/mp2t"
-	case "mp4":
-		return "video/mp4"
-	case "mpeg":
-		return "video/mpeg"
-	case "mpg":
-		return "video/mpeg"
-	case "mov":
-		return "video/quicktime"
-	case "webm":
-		return "video/webm"
-	case "flv":
-		return "video/x-flv"
-	case "m4v":
-		return "video/x-m4v"
-	case "mng":
-		return "video/x-mng"
-	case "asx":
-		return "video/x-ms-asf"
-	case "asf":
-		return "video/x-ms-asf"
-	case "wmv":
-		return "video/x-ms-wmv"
-	case "avi":
-		return "video/x-msvideo"
-	}
-	return ""
-}
-
-// GetMIME returns the content-type of a file extension
-func GetMIME(extension string) (mime string) {
-	if len(extension) == 0 {
-		return mime
-	}
-	if extension[0] == '.' {
-		mime = mimeExtensions(extension[1:])
-	} else {
-		mime = mimeExtensions(extension)
-	}
-	if len(mime) == 0 {
-		return MIMEOctetStream
-	}
-	return mime
-}