in case of empty directory don't redirect to changelog, it causes an redirection loop

rhodecode/controllers/changelog.py

@@ -1,172 +1,175 b''
 # -*- coding: utf-8 -*-
 """
     rhodecode.controllers.changelog
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
     changelog controller for rhodecode
 
     :created_on: Apr 21, 2010
     :author: marcink
     :copyright: (C) 2010-2012 Marcin Kuzminski <[e-mail]>
     :license: GPLv3, see COPYING for more details.
 """
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import logging
 import traceback
 
 from pylons import request, url, session, tmpl_context as c
 from pylons.controllers.util import redirect
 from pylons.i18n.translation import _
 
 import rhodecode.lib.helpers as h
 from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator
 from rhodecode.lib.base import BaseRepoController, render
 from rhodecode.lib.helpers import RepoPage
 from rhodecode.lib.compat import json
 from rhodecode.lib.graphmod import _colored, _dagwalker
 from rhodecode.lib.vcs.exceptions import RepositoryError, ChangesetDoesNotExistError,\
-    ChangesetError, NodeDoesNotExistError
+    ChangesetError, NodeDoesNotExistError, EmptyRepositoryError
 from rhodecode.lib.utils2 import safe_int
 from webob.exc import HTTPNotFound
 
 log = logging.getLogger(__name__)
 
 
 def _load_changelog_summary():
     p = safe_int(request.GET.get('page'), 1)
     size = safe_int(request.GET.get('size'), 10)
 
     def url_generator(**kw):
         return url('changelog_summary_home',
                    repo_name=c.rhodecode_db_repo.repo_name, size=size, **kw)
 
     collection = c.rhodecode_repo
 
     c.repo_changesets = RepoPage(collection, page=p,
                                  items_per_page=size,
                                  url=url_generator)
     page_revisions = [x.raw_id for x in list(c.repo_changesets)]
     c.comments = c.rhodecode_db_repo.get_comments(page_revisions)
     c.statuses = c.rhodecode_db_repo.statuses(page_revisions)
 
 
 class ChangelogController(BaseRepoController):
 
     def __before__(self):
         super(ChangelogController, self).__before__()
         c.affected_files_cut_off = 60
 
     def _graph(self, repo, revs_int, repo_size, size, p):
         """
         Generates a DAG graph for repo
 
         :param repo:
         :param revs_int:
         :param repo_size:
         :param size:
         :param p:
         """
         if not revs_int:
             c.jsdata = json.dumps([])
             return
 
         data = []
         revs = revs_int
 
         dag = _dagwalker(repo, revs, repo.alias)
         dag = _colored(dag)
         for (id, type, ctx, vtx, edges) in dag:
             data.append(['', vtx, edges])
 
         c.jsdata = json.dumps(data)
 
     @LoginRequired()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def index(self, repo_name, revision=None, f_path=None):
         limit = 100
         default = 20
         if request.GET.get('size'):
             c.size = max(min(safe_int(request.GET.get('size')), limit), 1)
             session['changelog_size'] = c.size
             session.save()
         else:
             c.size = int(session.get('changelog_size', default))
         # min size must be 1
         c.size = max(c.size, 1)
         p = safe_int(request.GET.get('page', 1), 1)
         branch_name = request.GET.get('branch', None)
         c.changelog_for_path = f_path
         try:
 
             if f_path:
                 log.debug('generating changelog for path %s' % f_path)
                 # get the history for the file !
                 tip_cs = c.rhodecode_repo.get_changeset()
                 try:
                     collection = tip_cs.get_file_history(f_path)
                 except (NodeDoesNotExistError, ChangesetError):
                     #this node is not present at tip !
                     try:
                         cs = self.__get_cs_or_redirect(revision, repo_name)
                         collection = cs.get_file_history(f_path)
                     except RepositoryError, e:
                         h.flash(str(e), category='warning')
                         redirect(h.url('changelog_home', repo_name=repo_name))
                 collection = list(reversed(collection))
             else:
                 collection = c.rhodecode_repo.get_changesets(start=0,
                                                         branch_name=branch_name)
             c.total_cs = len(collection)
 
             c.pagination = RepoPage(collection, page=p, item_count=c.total_cs,
                                     items_per_page=c.size, branch=branch_name)
             collection = list(c.pagination)
             page_revisions = [x.raw_id for x in c.pagination]
             c.comments = c.rhodecode_db_repo.get_comments(page_revisions)
             c.statuses = c.rhodecode_db_repo.statuses(page_revisions)
+        except (EmptyRepositoryError), e:
+            h.flash(str(e), category='warning')
+            return redirect(url('summary_home', repo_name=c.repo_name))
         except (RepositoryError, ChangesetDoesNotExistError, Exception), e:
             log.error(traceback.format_exc())
             h.flash(str(e), category='error')
             return redirect(url('changelog_home', repo_name=c.repo_name))
 
         c.branch_name = branch_name
         c.branch_filters = [('', _('All Branches'))] + \
             [(k, k) for k in c.rhodecode_repo.branches.keys()]
         _revs = []
         if not f_path:
             _revs = [x.revision for x in c.pagination]
         self._graph(c.rhodecode_repo, _revs, c.total_cs, c.size, p)
 
         return render('changelog/changelog.html')
 
     @LoginRequired()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def changelog_details(self, cs):
         if request.environ.get('HTTP_X_PARTIAL_XHR'):
             c.cs = c.rhodecode_repo.get_changeset(cs)
             return render('changelog/changelog_details.html')
         raise HTTPNotFound()
 
     @LoginRequired()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def changelog_summary(self, repo_name):
         if request.environ.get('HTTP_X_PARTIAL_XHR'):
             _load_changelog_summary()
 
             return render('changelog/changelog_summary_data.html')
         raise HTTPNotFound()