bug fixes in input transform

pkg/input/transform.go

@@ -96,6 +96,8 @@ func (h *Helper) convertInputToType(input string, inputType inputType, defaultPo
 		if _, err := filepath.Match(input, ""); err != filepath.ErrBadPattern && !isURL {
 			return input
 		}
+		// if none of these satisfy the condition return empty
+		return ""
 	case typeHostOnly:
 		if hasHost {
 			return host
@@ -113,6 +115,10 @@ func (h *Helper) convertInputToType(input string, inputType inputType, defaultPo
 				return string(probed)
 			}
 		}
+		// try to parse it as absolute url and return
+		if absUrl, err := urlutil.ParseAbsoluteURL(input, false); err == nil {
+			return absUrl.String()
+		}
 	case typeHostWithPort, typeHostWithOptionalPort:
 		if hasHost && hasPort {
 			return net.JoinHostPort(host, port)
@@ -130,6 +136,8 @@ func (h *Helper) convertInputToType(input string, inputType inputType, defaultPo
 		if uri != nil && stringsutil.EqualFoldAny(uri.Scheme, "ws", "wss") {
 			return input
 		}
+		// empty if prefix is not given
+		return ""
 	}
 	// do not return empty
 	return input

pkg/input/transform_test.go

@@ -30,7 +30,7 @@ func TestConvertInputToType(t *testing.T) {
 		{"https://google.com:443", typeHostOnly, "google.com", ""},
 
 		// url
-		{"test.com", typeURL, "", ""},
+		{"test.com", typeURL, "test.com", ""},
 		{"google.com", typeURL, "https://google.com", ""},
 		{"https://google.com", typeURL, "https://google.com", ""},
 
@@ -43,7 +43,7 @@ func TestConvertInputToType(t *testing.T) {
 		{"input_test.*", typeFilepath, "input_test.*", ""},
 
 		// host-port
-		{"google.com", typeHostWithPort, "", ""},
+		{"google.com", typeHostWithPort, "google.com", ""},
 		{"google.com:443", typeHostWithPort, "google.com:443", ""},
 		{"https://google.com", typeHostWithPort, "google.com:443", ""},
 		{"https://google.com:443", typeHostWithPort, "google.com:443", ""},