7212: convert invalid date to text on .gw import

Back-port from master [829986] [1ac0e2]

src/plugins/import/ImportGeneWeb.py

@@ -96,6 +96,7 @@ def importData(database, filename, cb=None):
 class GeneWebParser(object):
     def __init__(self, dbase, file):
         self.db = dbase
+        if file: # Unit tests can create the parser w/o underlying file
 			self.f = open(file,"rU")
 			self.filename = file
 			self.encoding = 'iso-8859-1'
@@ -805,8 +806,17 @@ class GeneWebParser(object):
                 sub2 = (0,0,0)
             cal1 = _cal_map.get(groups[2],gen.lib.Date.CAL_GREGORIAN)
             sub1 = self.sub_date(groups[1])
+            try:
                 date.set(gen.lib.Date.QUAL_NONE,mod, cal1,
                          (sub1[0],sub1[1],sub1[2],0,sub2[0],sub2[1],sub2[2],0))
+            except gen.lib.DateError as e:
+                # TRANSLATORS: leave the {date} and {gw_snippet} untranslated 
+                # in the format string, but you may re-order them if needed.
+                LOG.warning(_(
+                    "Invalid date {date} in {gw_snippet}, "
+                    "preserving date as text."
+                    ).format(date=e.date.dateval, gw_snippet=field))
+                date.set(modifier=gen.lib.Date.MOD_TEXTONLY, text=field)
             return date
         else:
             return None

src/plugins/import/test/ImportGeneWeb_test.py

@@ -0,0 +1,49 @@
+#
+# Gramps - a GTK+/GNOME based genealogy program
+#
+# Copyright (C) 2013 Vassilii Khachaturov
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+
+"""
+Unit test of the GeneWebParser
+"""
+from __future__ import print_function
+import unittest
+import sys
+import os
+sys.path.append(os.curdir)
+sys.path.append(os.path.join(os.curdir, 'plugins', 'import'))
+
+from ImportGeneWeb import GeneWebParser
+from gen.lib.date import Date
+
+class ParseDateTest(unittest.TestCase):
+    def setUp(self):
+        self.parse = GeneWebParser(dbase=None, file=None).parse_date
+
+    def test_regular_date_parsed_dmy(self):
+        d = self.parse("28/2/1876")
+        self.assertEqual(d.get_ymd(), (1876, 2, 28))
+
+    def test_invalid_date_stays_verbatim_text(self):
+        text = "29/2/1875"
+        d = self.parse(text)
+        self.assertEqual(d.get_modifier(), Date.MOD_TEXTONLY)
+        self.assertEqual(d.get_text(), text)
+
+if __name__ == "__main__":
+    unittest.main()