[tools] [messages] Add Nokia VMG converter

tools/vmg-convert.py

@@ -0,0 +1,62 @@
+#! /usr/bin/python3
+
+# SMS Import / Export: a simple Android app for importing and exporting SMS messages from and to JSON files.
+# Copyright (c) 2023 Thomas More
+#
+# This file is part of SMS Import / Export.
+#
+# SMS Import / Export is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# SMS Import / Export 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with SMS Import / Export.  If not, see <https://www.gnu.org/licenses/>.
+
+import os
+import json
+import sys
+from datetime import datetime
+import argparse
+
+parser = argparse.ArgumentParser(
+    description='convert SMS messages in Nokia VMG format to SMS Import / Export JSON format')
+parser.add_argument('directory', help='directory containing (only) VMG files')
+parser.add_argument('-d', '--debug', action='store_true', help='debugging output')
+args = parser.parse_args()
+
+messages = []
+for file in os.listdir(args.directory):
+    if args.debug:
+        sys.stderr.write('Processing ' + file + '\n')
+    FILE, BODY = 0, 1
+    mode = FILE
+    sms = {}
+    for line in open(os.path.join(args.directory, file), encoding='utf-16'):
+        if mode == BODY:
+            if line.strip() == 'END:VBODY':
+                mode = FILE
+            elif line[:5] != 'Date:':
+                sms['body'] += line.strip()
+        else:
+            name, value = line.strip().split(':')
+            if name == 'BEGIN':
+                if value == 'VBODY':
+                    mode = BODY
+                    sms['body'] = ''
+            elif name == 'X-IRMC-STATUS':
+                sms['read'] = '1' if value == 'READ' else '0'
+            elif name == 'X-IRMC-BOX':
+                sms['type'] = '2' if value == 'SENT' else '1'
+            # I'm not sure if we should set 'date', 'date_sent', or both here
+            elif name == 'X-NOK-DT':
+                sms['date'] = str(int(datetime.fromisoformat(value).timestamp() * 1000))
+            elif name == 'TEL':
+                sms['address'] = value
+    messages.append(sms)
+print(json.dumps(messages, indent=2))