if not content:

                h.flash(_('No content'), category='warning')

                return redirect(url('changeset_home', repo_name=c.repo_name,

                                    revision='tip'))

            if not filename:

                h.flash(_('No filename'), category='warning')

                return redirect(url('changeset_home', repo_name=c.repo_name,

                                    revision='tip'))

            try:

                self.scm_model.create_node(repo=c.rhodecode_repo,

                                             repo_name=repo_name, cs=c.cs,

                                             user=self.rhodecode_user,

                                             author=author, message=message,

                                             content=content, f_path=node_path)

                h.flash(_('Successfully committed to %s' % node_path),

                        category='success')

            except NodeAlreadyExistsError, e:

                h.flash(_(e), category='error')

            except Exception:

                log.error(traceback.format_exc())

                h.flash(_('Error occurred during commit'), category='error')

            return redirect(url('changeset_home',

                                repo_name=c.repo_name, revision='tip'))

        return render('files/files_add.html')

    @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',

                                   'repository.admin')

    def archivefile(self, repo_name, fname):

        fileformat = None

        revision = None

        ext = None

        subrepos = request.GET.get('subrepos') == 'true'

        for a_type, ext_data in settings.ARCHIVE_SPECS.items():

            archive_spec = fname.split(ext_data[1])

            if len(archive_spec) == 2 and archive_spec[1] == '':

                fileformat = a_type or ext_data[1]

                revision = archive_spec[0]

                ext = ext_data[1]

        try:

            dbrepo = RepoModel().get_by_repo_name(repo_name)

            if dbrepo.enable_downloads is False:

                return _('downloads disabled')

            # patch and reset hooks section of UI config to not run any 

            # hooks on fetching archives with subrepos

            for k, v in c.rhodecode_repo._repo.ui.configitems('hooks'):

                c.rhodecode_repo._repo.ui.setconfig('hooks', k, None)

            cs = c.rhodecode_repo.get_changeset(revision)

            content_type = settings.ARCHIVE_SPECS[fileformat][0]

        except ChangesetDoesNotExistError:

            return _('Unknown revision %s') % revision

        except EmptyRepositoryError:

            return _('Empty repository')

        except (ImproperArchiveTypeError, KeyError):

            return _('Unknown archive type')

        response.content_type = content_type

        response.content_disposition = 'attachment; filename=%s-%s%s' \

            % (repo_name, revision, ext)

        import tempfile

        archive = tempfile.mkstemp()[1]

        t = open(archive, 'wb')

        cs.fill_archive(stream=t, kind=fileformat, subrepos=subrepos)

        def get_chunked_archive(archive):

            stream = open(archive, 'rb')

            while True:

                data = stream.read(4096)

                if not data:

                    os.remove(archive)

                    break

                yield data

        return get_chunked_archive(archive)

    @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',

                                   'repository.admin')

    def diff(self, repo_name, f_path):

        ignore_whitespace = request.GET.get('ignorews') == '1'

        line_context = request.GET.get('context', 3)

        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.big_diff = False

        c.anchor_url = anchor_url

        c.ignorews_url = _ignorews_url

        c.context_url = _context_url