Add module cli

src/jcloud_docsgen/cli.py

@@ -0,0 +1,37 @@
+# Copyright 2026 jCloud Services GbR
+
+# 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.
+
+'''
+The command line interface
+'''
+
+__all__ = [
+    'main'
+]
+
+import argparse
+import pathlib
+from .utils import ExistingDirectory
+
+def existing_directory(path: str, *args, **kwargs) -> pathlib.Path:
+    try:
+        return ExistingDirectory(path, *args, **kwargs)
+    except (FileNotFoundError, NotADirectoryError) as e:
+        raise argparse.ArgumentTypeError(f'{e.filename}{": " + e.args[1] if len(e.args) > 1 else ""}')
+
+def main() -> int:
+    argument_parser = argparse.ArgumentParser()
+    argument_parser.add_argument('project_directory', type = existing_directory, default = pathlib.Path('.'), help = 'The directory of the project')
+    args = argument_parser.parse_args()
+    return 0