Beginning of CLI interface + protection against infinite recursion.

blender_asset_tracer/cli/__init__.py

@@ -0,0 +1,48 @@
+"""Commandline entry points."""
+
+import argparse
+import logging
+
+from . import common, pack, list_deps
+
+
+def cli_main():
+    parser = argparse.ArgumentParser(description='BAT: Blender Asset Tracer')
+
+    # func is set by subparsers to indicate which function to run.
+    parser.set_defaults(func=None,
+                        loglevel=logging.WARNING)
+    loggroup = parser.add_mutually_exclusive_group()
+    loggroup.add_argument('-v', '--verbose', dest='loglevel',
+                          action='store_const', const=logging.INFO,
+                          help='Log INFO level and higher')
+    loggroup.add_argument('-d', '--debug', dest='loglevel',
+                          action='store_const', const=logging.DEBUG,
+                          help='Log everything')
+    loggroup.add_argument('-q', '--quiet', dest='loglevel',
+                          action='store_const', const=logging.ERROR,
+                          help='Log at ERROR level and higher')
+    subparsers = parser.add_subparsers(help='sub-command help')
+
+    pack.add_parser(subparsers)
+    list_deps.add_parser(subparsers)
+
+    args = parser.parse_args()
+    config_logging(args)
+
+    from blender_asset_tracer import __version__
+    log = logging.getLogger(__name__)
+    log.debug('Running BAT version %s', __version__)
+
+    if not args.func:
+        parser.error('No subcommand was given')
+    return args.func(args)
+
+
+def config_logging(args):
+    """Configures the logging system based on CLI arguments."""
+
+    logging.basicConfig(
+        level=args.loglevel,
+        format='%(asctime)-15s %(levelname)8s %(name)-40s %(message)s',
+    )