Fixed issue with specifying -l without -g causing it to hang

nsencode.go

@@ -38,25 +38,40 @@ func formatOutput(encoded []int, groupSize int, lineSize int) string {
 		output.WriteString(fmt.Sprintf("%02d", num))
 	}
 
-	// Apply grouping
 	finalOutput := output.String()
 	var groupedOutput strings.Builder
 	counter := 0
 	groupCounter := 0
 
-	for i := 0; i < len(finalOutput); i += groupSize {
+	// Check if a group size is provided
-		if i+groupSize < len(finalOutput) {
+	if groupSize > 0 {
-			groupedOutput.WriteString(finalOutput[i:i+groupSize] + " ")
+		// Apply grouping and line size limits
-		} else {
+		for i := 0; i < len(finalOutput); i += groupSize {
-			groupedOutput.WriteString(finalOutput[i:])
+			if i+groupSize < len(finalOutput) {
-		}
+				groupedOutput.WriteString(finalOutput[i:i+groupSize] + " ")
-		counter++
+			} else {
-		groupCounter++
+				groupedOutput.WriteString(finalOutput[i:])
+			}
+			counter++
+			groupCounter++
 
-		// Check if we reached the line size
+			// Check if we reached the line size
-		if lineSize > 0 && groupCounter >= lineSize && i+groupSize < len(finalOutput) {
+			if lineSize > 0 && groupCounter >= lineSize && i+groupSize < len(finalOutput) {
-			groupedOutput.WriteString("\n")
+				groupedOutput.WriteString("\n")
-			groupCounter = 0
+				groupCounter = 0
+			}
+		}
+	} else {
+		// No group size specified, handle line size by number of characters
+		for i := 0; i < len(finalOutput); i++ {
+			groupedOutput.WriteByte(finalOutput[i])
+			counter++
+
+			// Check if we reached the line size
+			if lineSize > 0 && counter >= lineSize && i+1 < len(finalOutput) {
+				groupedOutput.WriteString("\n")
+				counter = 0
+			}
 		}
 	}
 
@@ -67,7 +82,7 @@ func main() {
 	// Define command-line flags
 	shift := flag.Int("s", 0, "Shift amount for the cipher")
 	groupSize := flag.Int("g", 0, "Group size for output formatting")
-	lineSize := flag.Int("l", 0, "Line size by number of groups")
+	lineSize := flag.Int("l", 0, "Line size by number of groups or characters if no group size is specified")
 	flag.Parse()
 
 	// Read input from stdin