Add fancy CLI options

PFERD/config.py

@@ -1,4 +1,6 @@
+import asyncio
 import os
+import sys
 from configparser import ConfigParser, SectionProxy
 from dataclasses import dataclass
 from pathlib import Path
@@ -68,7 +70,7 @@ class Config:
         raise ConfigLoadException()
 
     @staticmethod
-    def load_parser(path: Optional[Path] = None) -> ConfigParser:
+    def load_parser(parser: ConfigParser, path: Optional[Path] = None) -> None:
         """
         May throw a ConfigLoadException.
         """
@@ -76,8 +78,6 @@ class Config:
         if not path:
             path = Config._default_path()
 
-        parser = ConfigParser()
-
         # Using config.read_file instead of config.read because config.read
         # would just ignore a missing file and carry on.
         try:
@@ -90,8 +90,6 @@ class Config:
         except PermissionError:
             Config._fail_load(path, "Insufficient permissions")
 
-        return parser
-
     @staticmethod
     def _fail_dump(path: Path, reason: str) -> None:
         print(f"Failed to dump config file to {path}")
@@ -123,7 +121,7 @@ class Config:
                     self._parser.write(f)
             except FileExistsError:
                 print("That file already exists.")
-                if prompt_yes_no("Overwrite it?", default=False):
+                if asyncio.run(prompt_yes_no("Overwrite it?", default=False)):
                     with open(path, "w") as f:
                         self._parser.write(f)
                 else:
@@ -133,6 +131,9 @@ class Config:
         except PermissionError:
             self._fail_dump(path, "Insufficient permissions")
 
+    def dump_to_stdout(self) -> None:
+        self._parser.write(sys.stdout)
+
     @property
     def default_section(self) -> SectionProxy:
         return self._parser[self._parser.default_section]