doc: target language is no longer required, put usage notes on readme.

git-svn-id: file:///srv/svn/repo/suwako/trunk@9 0b558ee1-521d-8b46-a41b-40029c97c055

main.go

@@ -1,4 +1,4 @@
-// $KyokoNet: stcli,v 1.3 2022/12/13 23:57:00 akoizumi Exp 
+// $TheSupernovaDuo: stcli,v 1.3.1 2023/02/11 07:54:25 akoizumi Exp 
 // Command line client for SimplyTranslate, a privacy friendly frontend to other translation engines
 package main
 
@@ -32,8 +32,8 @@ func main() {
 	flag.Parse()
 	// Check if any of those two variables is empty.
 	// It actually needs the two to have content.
-	if len(input) == 0 || len(to) == 0 {
-		log.Fatal("Missing either the text or the target language.")
+	if len(input) == 0 {
+		log.Fatal("Missing input.")
 	}
 	// Map a variable to the struct
 	var translate Translate
@@ -44,6 +44,7 @@ func main() {
 	resp, err := http.Get(queryURL)
 	sanityCheck(err)
 	defer resp.Body.Close()
+	// JSON decoding
 	_ = json.NewDecoder(resp.Body).Decode(&translate)
 	sanityCheck(err)
 	// Pretty-print both the input and the output given.