Load and dump config

PFERD/__init__.py

@@ -1,2 +1,40 @@
+import argparse
+from pathlib import Path
+
+from .config import Config, ConfigDumpException, ConfigLoadException
+
+
 def main() -> None:
-    print("Hello world")
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--config", "-c",
+        type=Path,
+        metavar="PATH",
+        help="specify custom config file path",
+    )
+    parser.add_argument(
+        "--dump-config",
+        nargs="?",
+        const=True,
+        type=Path,
+        metavar="PATH",
+        help="dump current configuration to a file and exit."
+        " Uses default config file path if no path is specified",
+    )
+    args = parser.parse_args()
+
+    try:
+        config_parser = Config.load_parser(args.config)
+        config = Config(config_parser)
+    except ConfigLoadException:
+        exit(1)
+
+    if args.dump_config:
+        path = None if args.dump_config is True else args.dump_config
+        try:
+            config.dump(path)
+        except ConfigDumpException:
+            exit(1)
+        exit()
+
+    print(config)