Disable parsing from lines for now if writing CSV/TSV

The schema is entirely different, so we cannot put it in a uniform file.

maillogger/main.py

@@ -10,9 +10,14 @@ def main() -> None:
     loader = Loader(options.source_file)
     contents = loader.handle()
 
+    parse_to = True
+    parse_from = True
+    if options.fmt in ("csv", "tsv"):
+        parse_from = False
+
     parsed_contents = []
     for c in contents:
-        result = parse(c)
+        result = parse(c, parse_to, parse_from)
         if result:
             parsed_contents.append(result)
 

maillogger/parser.py

@@ -23,7 +23,7 @@
 ParseResultType = Dict[str, str]
 
 
-def parse(target: str) -> Optional[ParseResultType]:
+def parse(target: str, parse_to: bool = True, parse_from: bool = True) -> Optional[ParseResultType]:
     """Parse postfix maillog including send status
 
     Args:
@@ -61,10 +61,10 @@ def parse(target: str) -> Optional[ParseResultType]:
     match_from = re.search(PATTERN_FROM, target)
     match_to = re.search(PATTERN_TO, target)
 
-    if match_from:
+    if parse_from and match_from:
         result = match_from.groupdict()
         return ParseResultFrom(**result).to_dict()
-    if match_to:
+    if parse_to and match_to:
         result = match_to.groupdict()
         return ParseResultTo(**result).to_dict()