Made it possible to open files with the default browser.

go.mod

@@ -8,5 +8,5 @@ require (
 	github.com/mattn/go-runewidth v0.0.9
 	github.com/natefinch/atomic v0.0.0-20200526193002-18c0533a5b09
 	github.com/pkg/browser v0.0.0-20180916011732-0a3d74bf9ce4
-	golang.org/x/text v0.3.3 // indirect
+	golang.org/x/text v0.3.3
 )

go.sum

@@ -1,6 +1,4 @@
 github.com/DATA-DOG/go-sqlmock v1.3.3/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
-github.com/a-h/gemini v0.0.14 h1:p3ZJOv4Fqu34P7P2B080B+nnBJSbEtnOwhkZQNZOpoY=
-github.com/a-h/gemini v0.0.14/go.mod h1:p9wvIRDc2s3Lnbkw7CgNzDNgJHPuXDwh3dOF7w0NT8s=
 github.com/a-h/gemini v0.0.44 h1:mK+WFhHVoGxRtR9Z3/1Lc5wqLgkkR966Xcm41V54Rb0=
 github.com/a-h/gemini v0.0.44/go.mod h1:PatDaeVQiNS3FNRktd3EwcL/0Vr6D/FgSBnq/8oIJt8=
 github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=

main.go

@@ -523,21 +523,26 @@ func handleSuccessResponse(state *State) {
 		return
 	}
 	if !(mediaType == "text/gemini" || mediaType == "text/plain") {
-		opts := []string{"Open", "Save", "Cancel"}
-		if !strings.HasPrefix(mediaType, "text/") {
-			opts = []string{"Save", "Cancel"}
-		}
 		fileName := getFileNameFromURL(state.U, mediaType)
-		switch NewOptions(state.Screen, fmt.Sprintf("Server returned a %q file (%v)\n\n%s", meta, fileName, state.U.String()), opts...).Focus() {
-		case "Save":
-			err := atomic.WriteFile(fileName, state.Response.Body)
+		tmp := path.Join(os.TempDir(), fileName)
+		err := atomic.WriteFile(tmp, state.Response.Body)
+		if err != nil {
+			NewOptions(state.Screen, fmt.Sprintf("Failed to save file: %v", err), "OK").Focus()
+			return
+		}
+		switch NewOptions(state.Screen, fmt.Sprintf("Server returned a %q file (%v)\n\n%s", meta, fileName, state.U.String()), "Open", "Keep", "Discard").Focus() {
+		case "Open":
+			browser.OpenFile(tmp)
+		case "Keep":
+			_, err = copy(tmp, fileName)
 			if err != nil {
 				NewOptions(state.Screen, fmt.Sprintf("Failed to save file: %v", err), "OK").Focus()
+				return
 			}
-			return
-		case "Cancel":
-			return
+		case "Discard":
+			os.Remove(tmp)
 		}
+		return
 	}
 	// Use the charset to load the content.
 	var cs string
@@ -562,6 +567,28 @@ func handleSuccessResponse(state *State) {
 	return
 }
 
+func copy(src, dst string) (int64, error) {
+	sourceFileStat, err := os.Stat(src)
+	if err != nil {
+		return 0, err
+	}
+	if !sourceFileStat.Mode().IsRegular() {
+		return 0, fmt.Errorf("%s is not a regular file", src)
+	}
+	source, err := os.Open(src)
+	if err != nil {
+		return 0, err
+	}
+	defer source.Close()
+	destination, err := os.Create(dst)
+	if err != nil {
+		return 0, err
+	}
+	defer destination.Close()
+	nBytes, err := io.Copy(destination, source)
+	return nBytes, err
+}
+
 func getFileNameFromURL(u *url.URL, mimeType string) string {
 	fileName := path.Base(u.String())
 	if fileName == "." {