Implementation of "Rename exif tag action"

[Juho Vepsäläinen]

This patch implements https://blueprints.launchpad.net/phatch/+spec/rename-exif-tag .

[Stani (stani)]

I only did some small changes. You forgot a corner case where old_name == new_name, as than it would delete the tag. No icon needed here, as it is the same as the rename action. So this one is ready ;-) Congratulations!

$ bzr diff
=== modified file 'phatch/actions/rename_tag.py'
--- phatch/actions/rename_tag.py 2009-06-15 15:04:39 +0000
+++ phatch/actions/rename_tag.py 2009-06-15 15:05:14 +0000
@@ -34,20 +34,20 @@
     valid_last = True

     def interface(self,fields):
- fields[_t('Tag (Exif, Iptc)')]= self.ExifItpcField(
+ fields[_t('From (Exif, Iptc)')]= self.ExifItpcField(
             'Exif.Image.Software',choices=self.EXIF_IPTC)
- fields[_t('Tag (Exif, Iptc) New Name')] = self.ExifItpcField(
+ fields[_t('To (Exif, Iptc)')] = self.ExifItpcField(
             'Exif.Image.Software',choices=self.EXIF_IPTC)

     def apply(self,photo,setting,cache):
         info = photo.get_info()#read only
- old_name = self.get_field('Tag (Exif, Iptc)', info)
- new_name = self.get_field('Tag (Exif, Iptc) New Name', info)
+ old_name = self.get_field('From (Exif, Iptc)', info)
+ new_name = self.get_field('To (Exif, Iptc)', info)

         if new_name.strip() == '':
             return photo

- if old_name in photo.info.keys():
+ if old_name in photo.info.keys() and old_name != new_name:
             photo.metadata[new_name] = photo.info[old_name]
             photo.info[old_name] = None