Add failed files to the cli summary.

sigal/__init__.py

@@ -139,9 +139,18 @@ def build(source, destination, debug, verbose, force, config, theme, title,
         logger.debug('Copy %s to %s', src, dst)
         copy(src, dst, symlink=settings['orig_link'])
 
-    print(('Done.\nProcessed {image} images ({image_skipped} skipped) and '
-           '{video} videos ({video_skipped} skipped) in {duration:.2f} '
-           'seconds.').format(duration=time.time() - start_time, **gal.stats))
+    stats = gal.stats
+
+    def format_stats(_type):
+        opt = ["{} {}".format(stats[_type + '_' + subtype], subtype)
+               for subtype in ('skipped', 'failed')
+               if stats[_type + '_' + subtype] > 0]
+        opt = ' ({})'.format(', '.join(opt)) if opt else ''
+        return '{} {}s{}'.format(stats[_type], _type, opt)
+
+    print('Done.\nProcessed {} and {} in {:.2f} seconds.'
+          .format(format_stats('image'), format_stats('video'),
+                  time.time() - start_time))
 
 
 def init_plugins(settings):

sigal/gallery.py

@@ -468,8 +468,7 @@ class Gallery(object):
     def __init__(self, settings, ncpu=None):
         self.settings = settings
         self.logger = logging.getLogger(__name__)
-        self.stats = {'image': 0, 'image_skipped': 0,
-                      'video': 0, 'video_skipped': 0}
+        self.stats = defaultdict(int)
         self.init_pool(ncpu)
         check_or_create_dir(settings['destination'])
 
@@ -638,6 +637,7 @@ class Gallery(object):
             album = self.albums[path]
             for f in album.medias:
                 if f.filename == filename:
+                    self.stats[f.type + '_failed'] += 1
                     album.medias.remove(f)
                     break
         self.logger.error('You can run sigal in verbose (--verbose) or debug '