fixed #96 redirect loop on files

rhodecode/controllers/files.py

@@ -1,268 +1,273 b''
 # -*- coding: utf-8 -*-
 """
     rhodecode.controllers.files
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
     Files controller for RhodeCode
     
     :created_on: Apr 21, 2010
     :author: marcink
     :copyright: (C) 2009-2011 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; version 2
 # of the License or (at your opinion) any later version of the license.
 # 
 # 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, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 # MA  02110-1301, USA.
 import tempfile
 import logging
 import rhodecode.lib.helpers as h
 
 from mercurial import archival
 
 from pylons import request, response, session, tmpl_context as c, url
 from pylons.i18n.translation import _
 from pylons.controllers.util import redirect
 
 from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator
 from rhodecode.lib.base import BaseController, render
 from rhodecode.lib.utils import EmptyChangeset
 from rhodecode.model.scm import ScmModel
 
-from vcs.exceptions import RepositoryError, ChangesetError, ChangesetDoesNotExistError
+from vcs.exceptions import RepositoryError, ChangesetError, \
+    ChangesetDoesNotExistError, EmptyRepositoryError
 from vcs.nodes import FileNode
 from vcs.utils import diffs as differ
 
 log = logging.getLogger(__name__)
 
 class FilesController(BaseController):
 
     @LoginRequired()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def __before__(self):
         super(FilesController, self).__before__()
         c.cut_off_limit = self.cut_off_limit
 
     def index(self, repo_name, revision, f_path):
         hg_model = ScmModel()
         c.repo = hg_model.get_repo(c.repo_name)
 
         try:
             #reditect to given revision from form
             post_revision = request.POST.get('at_rev', None)
             if post_revision:
                 post_revision = c.repo.get_changeset(post_revision).raw_id
                 redirect(url('files_home', repo_name=c.repo_name,
                              revision=post_revision, f_path=f_path))
 
             c.branch = request.GET.get('branch', None)
 
             c.f_path = f_path
 
             c.changeset = c.repo.get_changeset(revision)
             cur_rev = c.changeset.revision
 
             #prev link
             try:
                 prev_rev = c.repo.get_changeset(cur_rev).prev(c.branch).raw_id
                 c.url_prev = url('files_home', repo_name=c.repo_name,
                              revision=prev_rev, f_path=f_path)
                 if c.branch:
                     c.url_prev += '?branch=%s' % c.branch
             except ChangesetDoesNotExistError:
                 c.url_prev = '#'
 
             #next link
             try:
                 next_rev = c.repo.get_changeset(cur_rev).next(c.branch).raw_id
                 c.url_next = url('files_home', repo_name=c.repo_name,
                          revision=next_rev, f_path=f_path)
                 if c.branch:
                     c.url_next += '?branch=%s' % c.branch
             except ChangesetDoesNotExistError:
                 c.url_next = '#'
 
             #files
             try:
                 c.files_list = c.changeset.get_node(f_path)
                 c.file_history = self._get_history(c.repo, c.files_list, f_path)
             except RepositoryError, e:
                 h.flash(str(e), category='warning')
                 redirect(h.url('files_home', repo_name=repo_name, revision=revision))
 
+        except EmptyRepositoryError, e:
+            h.flash(_('There are no files yet'), category='warning')
+            redirect(h.url('summary_home', repo_name=repo_name))
+
         except RepositoryError, e:
             h.flash(str(e), category='warning')
             redirect(h.url('files_home', repo_name=repo_name, revision='tip'))
 
 
 
         return render('files/files.html')
 
     def rawfile(self, repo_name, revision, f_path):
         hg_model = ScmModel()
         c.repo = hg_model.get_repo(c.repo_name)
         file_node = c.repo.get_changeset(revision).get_node(f_path)
         response.content_type = file_node.mimetype
         response.content_disposition = 'attachment; filename=%s' \
                                                     % f_path.split('/')[-1]
         return file_node.content
 
     def raw(self, repo_name, revision, f_path):
         hg_model = ScmModel()
         c.repo = hg_model.get_repo(c.repo_name)
         file_node = c.repo.get_changeset(revision).get_node(f_path)
         response.content_type = 'text/plain'
 
         return file_node.content
 
     def annotate(self, repo_name, revision, f_path):
         hg_model = ScmModel()
         c.repo = hg_model.get_repo(c.repo_name)
 
         try:
             c.cs = c.repo.get_changeset(revision)
             c.file = c.cs.get_node(f_path)
         except RepositoryError, e:
             h.flash(str(e), category='warning')
             redirect(h.url('files_home', repo_name=repo_name, revision=revision))
 
         c.file_history = self._get_history(c.repo, c.file, f_path)
 
         c.f_path = f_path
 
         return render('files/files_annotate.html')
 
     def archivefile(self, repo_name, fname):
         info = fname.split('.')
         revision, fileformat = info[0], '.' + '.'.join(info[1:])
         archive_specs = {
           '.tar.bz2': ('application/x-tar', 'tbz2'),
           '.tar.gz': ('application/x-tar', 'tgz'),
           '.zip': ('application/zip', 'zip'),
         }
         if not archive_specs.has_key(fileformat):
             return _('Unknown archive type %s') % fileformat
 
         repo = ScmModel().get_repo(repo_name)
 
         try:
             repo.get_changeset(revision)
         except ChangesetDoesNotExistError:
             return _('Unknown revision %s') % revision
 
         archive = tempfile.TemporaryFile()
         localrepo = repo.repo
         fname = '%s-%s%s' % (repo_name, revision, fileformat)
         archival.archive(localrepo, archive, revision, archive_specs[fileformat][1],
                          prefix='%s-%s' % (repo_name, revision))
         response.content_type = archive_specs[fileformat][0]
         response.content_disposition = 'attachment; filename=%s' % fname
         archive.seek(0)
 
         def read_in_chunks(file_object, chunk_size=1024 * 40):
             """Lazy function (generator) to read a file piece by piece.
             Default chunk size: 40k."""
             while True:
                 data = file_object.read(chunk_size)
                 if not data:
                     break
                 yield data
 
         return read_in_chunks(archive)
 
     def diff(self, repo_name, f_path):
         hg_model = ScmModel()
         diff1 = request.GET.get('diff1')
         diff2 = request.GET.get('diff2')
         c.action = request.GET.get('diff')
         c.no_changes = diff1 == diff2
         c.f_path = f_path
         c.repo = hg_model.get_repo(c.repo_name)
 
         try:
             if diff1 not in ['', None, 'None', '0' * 12, '0' * 40]:
                 c.changeset_1 = c.repo.get_changeset(diff1)
                 node1 = c.changeset_1.get_node(f_path)
             else:
                 c.changeset_1 = EmptyChangeset()
                 node1 = FileNode('.', '', changeset=c.changeset_1)
 
             if diff2 not in ['', None, 'None', '0' * 12, '0' * 40]:
                 c.changeset_2 = c.repo.get_changeset(diff2)
                 node2 = c.changeset_2.get_node(f_path)
             else:
                 c.changeset_2 = EmptyChangeset()
                 node2 = FileNode('.', '', changeset=c.changeset_2)
         except RepositoryError:
             return redirect(url('files_home',
                                 repo_name=c.repo_name, f_path=f_path))
 
         f_udiff = differ.get_udiff(node1, node2)
         diff = differ.DiffProcessor(f_udiff)
 
         if c.action == 'download':
             diff_name = '%s_vs_%s.diff' % (diff1, diff2)
             response.content_type = 'text/plain'
             response.content_disposition = 'attachment; filename=%s' \
                                                     % diff_name
             return diff.raw_diff()
 
         elif c.action == 'raw':
             response.content_type = 'text/plain'
             return diff.raw_diff()
 
         elif c.action == 'diff':
             if node1.size > self.cut_off_limit or node2.size > self.cut_off_limit:
                 c.cur_diff = _('Diff is to big to display')
             else:
                 c.cur_diff = diff.as_html()
         else:
             #default option
             if node1.size > self.cut_off_limit or node2.size > self.cut_off_limit:
                 c.cur_diff = _('Diff is to big to display')
             else:
                 c.cur_diff = diff.as_html()
 
         if not c.cur_diff: c.no_changes = True
         return render('files/file_diff.html')
 
     def _get_history(self, repo, node, f_path):
         from vcs.nodes import NodeKind
         if not node.kind is NodeKind.FILE:
             return []
         changesets = node.history
         hist_l = []
 
         changesets_group = ([], _("Changesets"))
         branches_group = ([], _("Branches"))
         tags_group = ([], _("Tags"))
 
         for chs in changesets:
             n_desc = 'r%s:%s' % (chs.revision, chs.short_id)
             changesets_group[0].append((chs.raw_id, n_desc,))
 
         hist_l.append(changesets_group)
 
         for name, chs in c.repository_branches.items():
             #chs = chs.split(':')[-1]
             branches_group[0].append((chs, name),)
         hist_l.append(branches_group)
 
         for name, chs in c.repository_tags.items():
             #chs = chs.split(':')[-1]
             tags_group[0].append((chs, name),)
         hist_l.append(tags_group)
 
         return hist_l