INI -> REPL JSON Converter (#21687)

This adds a chip-tool INI to JSON converter that can be used with the
Python REPL or associated test infrastructure.

scripts/tools/convert_ini.py

@@ -0,0 +1,91 @@
+#!/usr/bin/env -S python3 -B
+
+#
+#    Copyright (c) 2021 Project CHIP Authors
+#    All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License");
+#    you may not use this file except in compliance with the License.
+#    You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS,
+#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#    See the License for the specific language governing permissions and
+#    limitations under the License.
+#
+import json
+from configparser import ConfigParser
+import click
+import typing
+import re
+
+
+def convert_ini_to_json(ini_dir: str, json_path: str):
+    """ Converts chip-tool INI files found in 'ini_dir' into the JSON format expected by the matter python REPL
+        and associated test infrastructure.
+
+        Specifically, this will take the three INI files that correspond to the three example CAs (alpha, beta, gamma)
+        and munge them together into a single REPL-compatible JSON file.
+    """
+    python_json_store = {}
+
+    python_json_store['repl-config'] = {
+        'fabricAdmins': {
+            '1': {
+                'fabricId': 1,
+                'vendorId': 65521
+            },
+            '2': {
+                'fabricId': 2,
+                'vendorId': 65521
+            },
+            '3': {
+                'fabricId': 3,
+                'vendorId': 65521
+            }
+        }
+    }
+
+    python_json_store['sdk-config'] = {}
+
+    load_ini_into_dict(ini_file=ini_dir + '/chip_tool_config.alpha.ini',
+                       json_dict=python_json_store['sdk-config'], replace_suffix='1')
+    load_ini_into_dict(ini_file=ini_dir + '/chip_tool_config.beta.ini',
+                       json_dict=python_json_store['sdk-config'], replace_suffix='2')
+    load_ini_into_dict(ini_file=ini_dir + '/chip_tool_config.gamma.ini',
+                       json_dict=python_json_store['sdk-config'], replace_suffix='3')
+
+    json_file = open(json_path, 'w')
+    json.dump(python_json_store, json_file, ensure_ascii=True, indent=4)
+
+
+def load_ini_into_dict(ini_file: str, json_dict: typing.Dict, replace_suffix: str):
+    """ Loads the specific INI file into the provided dictionary. A 'replace_suffix' string
+        has to be provided to convert the existing numerical suffix to a different value.
+    """
+    config = ConfigParser()
+
+    # Enable case-sensitive keys.
+    config.optionxform = str
+
+    config.read(ini_file)
+
+    for key in config['Default']:
+        value = config['Default'][key]
+        key = re.sub(r'(.*?)[0-9]+', r'\1', key) + replace_suffix
+        json_dict[key] = value
+
+
+@click.command()
+@click.option('--ini-dir', type=click.Path(exists=True), show_default=True, default='/tmp', help='Path to directory containing INI files that chip-tool uses for its tests')
+@click.option('--json-path', type=click.Path(exists=False), show_default=True, default='/tmp/repl-storage.json', help='Path to JSON file used by Python infrastructure')
+def main(ini_dir: str, json_path: str):
+    convert_ini_to_json(ini_dir, json_path)
+    return 0
+
+
+if __name__ == '__main__':
+    main()