IPTC Date to string conversion.

2 files changed, 22 insertions, 0 deletions

diff --git a/src/pyexiv2.py b/src/pyexiv2.py
index 2cda133..d3814e1 100644
--- a/src/pyexiv2.py
+++ b/src/pyexiv2.py
@@ -554,6 +554,13 @@ class IptcTag(MetadataTag):
             else:
                 raise IptcValueError(value, xtype)
 
+        elif xtype == 'Date':
+            if type(value) in (datetime.date, datetime.datetime):
+                # ISO 8601 date format
+                return value.strftime('%Y%m%d')
+            else:
+                raise IptcValueError(value, xtype)
+
         # TODO: other types
 
         raise IptcValueError(value, xtype)
diff --git a/unittest/iptc.py b/unittest/iptc.py
index 2d747d1..dd633d7 100644
--- a/unittest/iptc.py
+++ b/unittest/iptc.py
@@ -86,6 +86,21 @@ class TestIptcTag(unittest.TestCase):
         self.failUnlessRaises(IptcValueError, IptcTag._convert_to_python, '2009-10-32', xtype)
         self.failUnlessRaises(IptcValueError, IptcTag._convert_to_python, '2009-02-24T22:12:54', xtype)
 
+    def test_convert_to_string_date(self):
+        xtype = 'Date'
+        # Valid values
+        self.assertEqual(IptcTag._convert_to_string(datetime.date(2009, 2, 4), xtype),
+                         '20090204')
+        self.assertEqual(IptcTag._convert_to_string(datetime.datetime(1999, 10, 13), xtype),
+                         '19991013')
+        self.assertEqual(IptcTag._convert_to_string(datetime.datetime(2009, 2, 4), xtype),
+                         '20090204')
+        self.assertEqual(IptcTag._convert_to_string(datetime.datetime(2009, 2, 4, 10, 52, 37), xtype),
+                         '20090204')
+        # Invalid values
+        self.failUnlessRaises(IptcValueError, IptcTag._convert_to_string, 'invalid', xtype)
+        self.failUnlessRaises(IptcValueError, IptcTag._convert_to_string, None, xtype)
+
     def test_convert_to_python_time(self):
         xtype = 'Time'
         # Valid values