example/tx-decode: a simple python tool to decode darkfid transactions showing contract function calls and their parameters as well as signatures for each call

example/tx-decode.py

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+#!/usr/bin/env python
+
+# This file is part of DarkFi (https://dark.fi)
+#
+# Copyright (C) 2020-2025 Dyne.org foundation
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+import argparse, sys, base64, json
+from darkfi_sdk.tx import Transaction
+
+def main(argv):
+    parser = argparse.ArgumentParser(description='Tool to decode Darkfid base64 transaction')
+    parser.add_argument('--format', default='info', help='Output format. options are info and json, defaults to info')
+    parser.add_argument("tx", nargs="?", help="The base64 transaction data")
+
+    args = parser.parse_args()
+
+    if args.tx:
+        base64_tx = args.tx
+    else:
+        base64_tx = sys.stdin.read().strip()
+
+    tx_bytes = base64.b64decode(base64_tx)
+    tx = Transaction.decode(tx_bytes)
+    if args.format == 'json':
+        print(json.dumps(tx.__dict__, indent=4))
+    else:
+        print(tx)
+
+main(sys.argv)