6957: VCF export/import should support [x-]gender

Added support for exporting X-GENDER
and importing X-GENDER/GENDER fields.

Tested with impex.sh round-trip (see the bug for details)
and via logger observation.

svn: r22762

src/plugins/export/ExportVCard.py

@@ -49,7 +49,7 @@ log = logging.getLogger(".ExportVCard")
 from gen.ggettext import gettext as _
 from ExportOptions import WriterOptionBox
 import const
-from gen.lib import Date
+from gen.lib import Date, Person
 from gen.lib.urltype import UrlType
 from gen.lib.eventtype import EventType
 from gen.display.name import displayer as _nd
@@ -169,6 +169,7 @@ class VCardWriter(object):
             self.write_name(prname)
             self.write_sortstring(prname)
             self.write_nicknames(person, prname)
+            self.write_gender(person)
             self.write_birthdate(person)
             self.write_addresses(person)
             self.write_urls(person)
@@ -250,6 +251,18 @@ class VCardWriter(object):
         if len(nicknames) > 0:
             self.writeln("NICKNAME:%s" % (','.join(self.esc(nicknames))))
 
+    def write_gender(self, person):
+        """Write the X-GENDER property of a VCard (X- dropped in 4.0, we're at 3.0)."""
+        gender = person.get_gender()
+        gender_value = ''
+        if gender == Person.MALE:
+            gender_value = 'Male'
+        elif gender == Person.FEMALE:
+            gender_value = 'Female'
+        log.info("gender: %s -> %s" % (gender, gender_value))
+        if gender_value:
+            self.writeln("X-GENDER:%s" % (gender_value))
+
     def write_birthdate(self, person):
         """Write the BDAY property of a VCard."""
         birth_ref = person.get_birth_ref()