Replace []string with map[string]string for extensions, to allow setting default MIME type values

cmd/files.go

@@ -272,10 +272,8 @@ func splitPath(path string, Regexes *Regexes) (*Path, error) {
 func tryExtensions(p *Path, formats *types.Types) (string, error) {
 	var fileName string
 
-	for _, format := range formats.Extensions {
+	for extension := range formats.Extensions {
-		for _, extension := range format.Extensions {
 		fileName = fmt.Sprintf("%s%.3d%s", p.base, p.number, extension)
-		}
 
 		exists, err := fileExists(fileName)
 		if err != nil {

cmd/root.go

@@ -12,7 +12,7 @@ import (
 )
 
 const (
-	ReleaseVersion string = "0.72.2"
+	ReleaseVersion string = "0.73.0"
 )
 
 var (

cmd/web.go

@@ -312,7 +312,7 @@ func ServePage(args []string) error {
 	mux := httprouter.New()
 
 	formats := &types.Types{
-		Extensions: make(map[string]*types.Type),
+		Extensions: make(map[string]string),
 		MimeTypes:  make(map[string]*types.Type),
 	}
 

types/audio.go

@@ -29,16 +29,18 @@ func RegisterAudio() *Type {
 				mime,
 				fileName)
 		},
-		Extensions: []string{
+		Extensions: map[string]string{
-			`.mp3`,
+			`.mp3`: `audio/mpeg`,
-			`.ogg`,
+			`.ogg`: `audio/ogg`,
-			`.oga`,
+			`.oga`: `audio/ogg`,
-			`.wav`,
 		},
 		MimeTypes: []string{
+			`application/ogg`,
+			`audio/mp3`,
 			`audio/mpeg`,
+			`audio/mpeg3`,
 			`audio/ogg`,
-			`audio/wav`,
+			`audio/x-mpeg-3`,
 		},
 		Validate: func(filePath string) bool {
 			return true

types/flash.go

@@ -30,8 +30,8 @@ func RegisterFlash() *Type {
 
 			return html.String()
 		},
-		Extensions: []string{
+		Extensions: map[string]string{
-			`.swf`,
+			`.swf`: `application/x-shockwave-flash`,
 		},
 		MimeTypes: []string{
 			`application/x-shockwave-flash`,

types/images.go

@@ -60,19 +60,19 @@ func RegisterImages() *Type {
 				mime,
 				fileName)
 		},
-		Extensions: []string{
+		Extensions: map[string]string{
-			`.apng`,
+			`.apng`:  `image/apng`,
-			`.avif`,
+			`.avif`:  `image/avif`,
-			`.bmp`,
+			`.bmp`:   `image/bmp`,
-			`.gif`,
+			`.gif`:   `image/gif`,
-			`.jpg`,
+			`.jpg`:   `image/jpeg`,
-			`.jpeg`,
+			`.jpeg`:  `image/jpeg`,
-			`.jfif`,
+			`.jfif`:  `image/jpeg`,
-			`.pjp`,
+			`.pjp`:   `image/jpeg`,
-			`.pjpeg`,
+			`.pjpeg`: `image/jpeg`,
-			`.png`,
+			`.png`:   `image/png`,
-			`.svg`,
+			`.svg`:   `image/svg+xml`,
-			`.webp`,
+			`.webp`:  `image/webp`,
 		},
 		MimeTypes: []string{
 			`image/apng`,

types/text.go

@@ -36,15 +36,15 @@ func RegisterText() *Type {
 				queryParams,
 				body)
 		},
-		Extensions: []string{
+		Extensions: map[string]string{
-			`.css`,
+			`.css`:  `text/css`,
-			`.csv`,
+			`.csv`:  `text/csv`,
-			`.html`,
+			`.html`: `text/html`,
-			`.js`,
+			`.js`:   `text/javascript`,
-			`.json`,
+			`.json`: `application/json`,
-			`.md`,
+			`.md`:   `text/markdown`,
-			`.txt`,
+			`.txt`:  `text/plain`,
-			`.xml`,
+			`.xml`:  `application/xml`,
 		},
 		MimeTypes: []string{
 			`application/json`,

types/types.go

@@ -15,21 +15,21 @@ type Type struct {
 	Css        func() string
 	Title      func(queryParams, fileUri, filePath, fileName, mime string) string
 	Body       func(queryParams, fileUri, filePath, fileName, mime string) string
-	Extensions []string
+	Extensions map[string]string
 	MimeTypes  []string
 	Validate   func(filePath string) bool
 }
 
 type Types struct {
-	Extensions map[string]*Type
+	Extensions map[string]string
 	MimeTypes  map[string]*Type
 }
 
 func (s *Types) Add(t *Type) {
-	for _, v := range t.Extensions {
+	for k, v := range t.Extensions {
-		_, exists := s.Extensions[v]
+		_, exists := s.Extensions[k]
 		if !exists {
-			s.Extensions[v] = t
+			s.Extensions[k] = v
 		}
 	}
 
@@ -63,10 +63,14 @@ func FileType(path string, registeredFormats *Types) (bool, *Type, string, error
 	}
 
 	// if mime type detection fails, use the file extension
-	fileType, exists = registeredFormats.Extensions[filepath.Ext(path)]
+	mimeType, exists = registeredFormats.Extensions[filepath.Ext(path)]
+	if exists {
+		fileType, exists := registeredFormats.MimeTypes[mimeType]
+
 		if exists {
 			return fileType.Validate(path), fileType, mimeType, nil
 		}
+	}
 
 	return false, nil, "", nil
 }

types/video.go

@@ -31,11 +31,11 @@ func RegisterVideos() *Type {
 				mime,
 				fileName)
 		},
-		Extensions: []string{
+		Extensions: map[string]string{
-			`.mp4`,
+			`.mp4`:  `video/mp4`,
-			`.ogm`,
+			`.ogm`:  `video/ogg`,
-			`.ogv`,
+			`.ogv`:  `video/ogg`,
-			`.webm`,
+			`.webm`: `video/webm`,
 		},
 		MimeTypes: []string{
 			`video/mp4`,