addec cli command for rule evaluation on messages

Author: manfred-kaiser

setup.py

@@ -47,6 +47,9 @@
         "sifter": ['py.typed']
     },
     entry_points={
+        'console_scripts': [
+            'sifter = sifter.cli:main'
+        ],
         'sifter_extensions': [
             # sifter commands
             'discard = sifter.commands.discard:CommandDiscard',

sifter/cli.py

@@ -0,0 +1,27 @@
+from argparse import ArgumentParser
+import email
+import os
+import logging
+import sys
+
+import sifter.parser
+
+
+def main() -> None:
+    arg_parser = ArgumentParser()
+    arg_parser.add_argument('rulefile')
+    arg_parser.add_argument('messagefile')
+    args = arg_parser.parse_args()
+
+    if not os.path.isfile(args.rulefile):
+        logging.error("rulefile '%s' does not exist", args.rulefile)
+        sys.exit(1)
+
+    if not os.path.isfile(args.messagefile):
+        logging.error("mail message '%s' does not exist", args.messagefile)
+        sys.exit(1)
+
+    rules = sifter.parser.parse_file(open(args.rulefile))
+    msg = email.message_from_file(open(args.messagefile))
+    msg_actions = rules.evaluate(msg)
+    print(msg_actions)