Output JSON

cmd/ctfetch/main.go

@@ -4,6 +4,7 @@
 package main
 
 import (
+	"encoding/json"
 	"flag"
 	"fmt"
 	"os"
@@ -90,17 +91,30 @@ func main() {
 
 	if *dumpAll {
 		// Dump all entries in the tile
-		if err := utils.DumpAllEntries(tileData); err != nil {
+		result, err := utils.DumpAllEntries(tileData)
+		if err != nil {
 			fatal("%v", err)
 		}
+		printJSON(result)
 	} else {
 		// Dump only the specific entry at the position
-		if err := utils.DumpEntryAtPosition(tileData, int(positionInTile), leafIndex); err != nil {
+		entry, err := utils.DumpEntryAtPosition(tileData, int(positionInTile), leafIndex)
+		if err != nil {
 			fatal("%v", err)
 		}
+		printJSON(entry)
 	}
 }
 
+func printJSON(v interface{}) {
+	data, err := json.MarshalIndent(v, "", "  ")
+	if err != nil {
+		fatal("failed to marshal JSON: %v", err)
+	}
+
+	fmt.Println(string(data))
+}
+
 func fatal(format string, args ...any) {
 	fmt.Fprintf(os.Stderr, "Error: "+format+"\n", args...)
 	os.Exit(1)