New method dates_extract which finds begining and ending at once

redfam.py

@@ -30,7 +30,9 @@ import locale
 import re
 from datetime import datetime
 
+import mwparserfromhell as mwparser  # noqa
 import pywikibot
+from pywikibot.tools import deprecated  # noqa
 
 import jogobot
 from mysqlred import MysqlRedFam
@@ -337,6 +339,48 @@ Maximum number of articles in red_fam exceeded, maximum number is 8, \
         else:
             return False
 
+    @classmethod
+    def extract_dates( cls, text, isarchive=False ):
+        """
+        Returns tuple of the first and maybe last timestamp of a section.
+        Last timestamp is only returned if there is a done notice or param
+        *isarchiv* is set to 'True'
+
+        @param  text  Text to search in
+        @type  line  Any Type castable to str
+        @param  isarchive  If true skip searching done notice (on archivepages)
+        @type  isarchive  bool
+
+        @returns  Timestamps, otherwise None
+        @returntype  tuple of strs
+        """
+
+        # Match all timestamps
+        matches = cls.__timestamp_pat.findall( str( text ) )
+        if matches:
+
+            # First one is beginning
+            # Since some timestamps are broken we need to reconstruct them
+            # by regex match groups
+            beginning = ( matches[0][0] + ", " + matches[0][1] + ". " +
+                          matches[0][2] + ". " + matches[0][3] )
+
+            # Last one maybe is ending
+            # Done notice format 1
+            # Done notice format 2
+            # Or on archivepages
+            if ( cls.__done_notice in text or
+                 cls.__done_notice2 in text or
+                 isarchive ):
+
+                ending = ( matches[-1][0] + ", " + matches[-1][1] + ". " +
+                           matches[-1][2] + ". " + matches[-1][3] )
+
+            else:
+                ending = None
+
+        return (beginning, ending)
+
     @classmethod
     def is_beginning( cls, line ):
         """