Provide the Subversion youngest revision, and a link to it, to the

directory view.  This is pretty common request, the most recent by
Sergio Rua <srua@plus.net>.

* viewcvs/lib/vclib/svn_ra/__init__.py
  (get_youngest_revision): New.

* viewcvs/lib/vclib/svn/__init__.py
  (get_youngest_revision): New.

* viewcvs/lib/viewcvs.py
  (view_directory): Re-organize some data dictionary stuffing (I
    really wish that *all* data dictionary parameters were initialized
    at the head of each view function so we can see a canonical list
    of those params, but maybe another day...).  Also, for 'svn'
    roottypes, populate a new 'youngest_rev' and 'youngest_rev_href'
    dictionary items.

* viewcvs/website/upgrading.html
  Document the new 'youngest_rev' and 'youngest_rev_href' template keys.


git-svn-id: http://viewvc.tigris.org/svn/viewvc/trunk@1044 8cb11bc2-c004-0410-86c3-e597b4017df7

lib/vclib/svn/__init__.py

@@ -255,6 +255,10 @@ def get_logs(svnrepos, full_name, files):
   core.svn_pool_destroy(subpool)
 
 
+def get_youngest_revision(svnrepos):
+  return svnrepos.youngest
+
+  
 def do_diff(svnrepos, path1, rev1, path2, rev2, diffoptions):
   root1 = fs.revision_root(svnrepos.fs_ptr, rev1, svnrepos.pool)
   root2 = fs.revision_root(svnrepos.fs_ptr, rev2, svnrepos.pool)

lib/vclib/svn_ra/__init__.py

@@ -321,6 +321,10 @@ def _escape_msvcrt_shell_arg(arg):
 _re_slashquote = re.compile(r'(\\+)(\"|$)')
 
 
+def get_youngest_revision(svnrepos):
+  return svnrepos.youngest
+
+
 def do_diff(svnrepos, path1, rev1, path2, rev2, diffoptions):
   url1 = svnrepos.rootpath + (path1 and '/' + path1)
   url2 = svnrepos.rootpath + (path2 and '/' + path2)

lib/viewcvs.py

@@ -1605,6 +1605,12 @@ def view_directory(request):
     'num_files' :  num_files,
     'files_shown' : num_displayed,
     'num_dead' : num_dead,
+    'youngest_rev' : None,
+    'youngest_rev_href' : None,
+    'view_tag' : None,
+    'has_tags' : None,
+    'selection_form' : None,
+    'queryform_href' : None,
   })
 
   # clicking on sort column reverses sort order
@@ -1641,12 +1647,6 @@ def view_directory(request):
       'branch_tags': branch_tags,
       'plain_tags': plain_tags,
     })
-  else:
-    data.update({
-      'view_tag' : None,
-      'has_tags' : None,
-      'selection_form' : None,
-    })
 
   # should we show the query link?
   if is_query_supported(request):
@@ -1656,8 +1656,6 @@ def view_directory(request):
     data['queryform_href'] = request.get_url(view_func=view_queryform,
                                              params=params,
                                              escape=1)
-  else:
-    data['queryform_href'] = None
 
   if cfg.options.use_pagesize:
     url, params = request.get_link(params={'dir_pagestart': None})
@@ -1673,11 +1671,14 @@ def view_directory(request):
     data['tree_rev_href'] = request.get_url(view_func=view_revision,
                                             params={'rev': data['tree_rev']},
                                             escape=1)
+    data['youngest_rev'] = vclib.svn.get_youngest_revision(request.repos)
+    data['youngest_rev_href'] = request.get_url(view_func=view_revision,
+                                                params={},
+                                                escape=1)
     if request.query_dict.has_key('rev'):
       data['jump_rev'] = request.query_dict['rev']
     else:
       data['jump_rev'] = str(request.repos.rev)
-
     url, params = request.get_link(params={'rev': None})
     data['jump_rev_action'] = urllib.quote(url, _URL_SAFE_CHARS)
     data['jump_rev_hidden_values'] = prepare_hidden_values(params)

templates/include/dir_header.ezt

@@ -14,7 +14,7 @@
 [is roottype "svn"]
 <tr>
   <td>Current revision:</td>
-  <td><a href="[tree_rev_href]">[tree_rev]</a></td>
+  <td><a href="[tree_rev_href]">[tree_rev]</a>[if-any youngest_rev] (of <a href="[youngest_rev_href]">[youngest_rev]</a>)[end]</td>
 </tr>
 <tr>
   <td>Jump to directory revision:</td>

website/upgrading.html

@@ -407,6 +407,14 @@
         </dt>
         <dd>Number of dead files.</dd>
       </dl>
+      <dl>
+        <dt>
+          <code>directory.ezt</code> and <code>dir_alternate.ezt</code>:
+          <var>youngest_rev</var>, <var>youngest_rev_href</var>
+        </dt>
+        <dd>Youngest revision and an href to navigate to it
+            (Subversion only).</dd>
+      </dl>
       <dl>
         <dt>
           <code>diff.ezt</code>: