gallery.py: add caption title/alt to images.

diff --git a/posts/gallery/gallery.py b/posts/gallery/gallery.py
index 8c7da07df942d9460b60174e39752ff06879c0a0..ecdd85fb0c0084269485214272ebe3d68d88be4b 100755 (executable)
--- a/posts/gallery/gallery.py
+++ b/posts/gallery/gallery.py
@@ -465,7 +465,17 @@ class CGIGalleryServer (object):
             image_path,image_url = self._thumb(image, **kwargs)
         else:
             image_url = image
-        return '<img src="{}" />'.format(image_url)
+        sections = ['<img src="{}"'.format(image_url)]
+        caption = self._get_image_caption(path=image)
+        if caption:
+            caption = _xml_sax_saxutils.quoteattr(
+                caption.replace('\n', ' ').strip())
+            sections.extend([
+                    'title={}'.format(caption),
+                    'alt={}'.format(caption),
+                    ])
+        sections.append('/>')
+        return ' '.join(sections)
 
     def _image_page(self, image):
         return image_base(image) + '/'