Export helper

main.go

@@ -15,6 +15,7 @@ import (
 	"io"
 	"local/args"
 	"local/gziphttp"
+	"local/simpleserve/simpleserve"
 	"log"
 	"net/http"
 	"net/http/httptest"
@@ -99,7 +100,7 @@ func endpoints(foo http.HandlerFunc) http.HandlerFunc {
 				fmt.Fprintln(w, err.Error())
 			}
 		} else {
-			setContentTypeIfMedia(w, r)
+			simpleserve.SetContentTypeIfMedia(w, r)
 			foo(w, r)
 		}
 	}
@@ -202,59 +203,3 @@ func toRealPath(p string) string {
 	d := path.Join(fs.Get("d").GetString())
 	return path.Join(d, p)
 }
-
-func setContentTypeIfMedia(w http.ResponseWriter, r *http.Request) {
-	ext := strings.ToLower(path.Ext(r.URL.Path))
-	if i := strings.LastIndex(ext, "."); i != -1 {
-		ext = ext[i:]
-	}
-	k := "Content-Type"
-	v := ""
-	switch ext {
-	case ".mp4":
-		v = "video/mp4"
-	case ".mkv":
-		v = "video/x-matroska"
-	case ".mp3":
-		v = "audio/mpeg3"
-	case ".epub", ".mobi":
-		k = "Content-Disposition"
-		v = "attachment"
-	case ".jpg", ".jpeg":
-		v = "image/jpeg"
-	case ".gif":
-		v = "image/gif"
-	case ".png":
-		v = "image/png"
-	case ".ico":
-		v = "image/x-icon"
-	case ".svg":
-		v = "image/svg+xml"
-	case ".css":
-		v = "text/css"
-	case ".js":
-		v = "text/javascript"
-	case ".json":
-		v = "application/json"
-	case ".html", ".htm":
-		v = "text/html"
-	case ".pdf":
-		w.Header().Set("Content-Disposition", fmt.Sprintf("inline; filename=%q", path.Base(r.URL.Path)))
-		v = "application/pdf"
-	case ".webm":
-		v = "video/webm"
-	case ".weba":
-		v = "audio/webm"
-	case ".webp":
-		v = "image/webp"
-	case ".zip":
-		v = "application/zip"
-	case ".7z":
-		v = "application/x-7z-compressed"
-	case ".tar":
-		v = "application/x-tar"
-	default:
-		return
-	}
-	w.Header().Set(k, v)
-}

main_test.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"local/simpleserve/simpleserve"
 	"net/http"
 	"net/http/httptest"
 	"net/url"
@@ -25,7 +26,7 @@ func TestSetContentType(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			r := &http.Request{URL: &url.URL{Path: c.path}}
 			w := httptest.NewRecorder()
-			setContentTypeIfMedia(w, r)
+			simpleserve.SetContentTypeIfMedia(w, r)
 			if ct := w.Header().Get("Content-Type"); ct != c.want {
 				t.Errorf("wrong content type: want %q, got %q", c.want, ct)
 			}