Add management command to optimize fulltext index.

Signed-off-by: Michal Čihař <michal@cihar.com>

docs/admin/management.rst

@@ -238,6 +238,10 @@ have huge set of translation units.
 
 You can use ``--clean`` to remove all words from database prior updating.
 
+With ``--optimize`` the index will not be processed again, only it's content
+will be optimized (removing stale entries and merging possibly split index
+files).
+
 .. seealso:: :ref:`fulltext`
 
 update_index

docs/changes.rst

@@ -16,6 +16,7 @@ Released on ? 2015.
 * Several URLs have changed, you might have to update your bookmarks.
 * Hook scripts are executed with VCS root as current directory.
 * Hook scripts are executed with environment variables descriping current component.
+* Add management command to optimize fulltext index.
 
 weblate 2.3
 -----------

weblate/trans/management/commands/rebuild_index.py

@@ -24,6 +24,7 @@ from weblate.trans.search import (
     update_source_unit_index, update_target_unit_index,
     clean_indexes,
 )
+from weblate.lang.models import Language
 from optparse import make_option
 
 
@@ -37,9 +38,25 @@ class Command(WeblateCommand):
             default=False,
             help='removes also all words from database'
         ),
+        make_option(
+            '--optimize',
+            action='store_true',
+            dest='optimize',
+            default=False,
+            help='optimize index without rebuilding it'
+        ),
     )
 
     def handle(self, *args, **options):
+        # Optimize index
+        if options['optimize']:
+            index = get_source_index()
+            index.optimize()
+            languages = Language.objects.have_translation()
+            for lang in languages:
+                index = get_target_index(lang.code)
+                index.optimize()
+            return
         # Optionally rebuild indices from scratch
         if options['clean']:
             clean_indexes()