=========

1.4.0 (**2012-XX-XX**)

----------------------

:status: in-progress

:branch: beta

news

++++

- new codereview system

- email map, allowing users to have multiple email addresses mapped into

  their accounts

- improved git-hook system. Now all actions for git are logged into journal

  including pushed revisions, user and IP address

- changed setup-app into setup-rhodecode and added default options to it.

- new git repos are created as bare now by default

- #464 added links to groups in permission box

- #465 mentions autocomplete inside comments boxes

- #469 added --update-only option to whoosh to re-index only given list

  of repos in index 

- rhodecode-api CLI client

- new git http protocol replaced buggy dulwich implementation.

  Now based on pygrack & gitweb

- Improved RSS/ATOM feeds. Discoverable by browsers using proper headers, and 

  reformated based on user suggestions. Additional rss/atom feeds for user

  journal

- various i18n improvements

- #478 permissions overview for admin in user edit view

fixes

+++++

- improved translations

- fixes issue #455 Creating an archive generates an exception on Windows

- fixes #448 Download ZIP archive keeps file in /tmp open and results 

  in out of disk space

- fixes issue #454 Search results under Windows include proceeding

  backslash

- fixed issue #450. Rhodecode no longer will crash when bad revision is

  present in journal data.

- fix for issue #417, git execution was broken on windows for certain

  commands.

- fixed #413. Don't disable .git directory for bare repos on deleting

- fixed issue #459. Changed the way of obtaining logger in reindex task.

- fixed #453 added ID field in whoosh SCHEMA that solves the issue of

  reindexing modified files

1.3.6 (**2012-05-17**)

----------------------

news

++++

- chinese traditional translation

- changed setup-app into setup-rhodecode and added arguments for auto-setup 

  mode that doesn't need user interaction 

fixes

+++++

- fixed no scm found warning

- fixed __future__ import error on rcextensions

- made simplejson required lib for speedup on JSON encoding

- fixes #449 bad regex could get more than revisions from parsing history

- don't clear DB session when CELERY_EAGER is turned ON

1.3.5 (**2012-05-10**)

----------------------

news

++++

- use ext_json for json module

- unified annotation view with file source view

- notification improvements, better inbox + css

- #419 don't strip passwords for login forms, make rhodecode 

  more compatible with LDAP servers

- Added HTTP_X_FORWARDED_FOR as another method of extracting 

  IP for pull/push logs. - moved all to base controller  

- #415: Adding comment to changeset causes reload. 

  Comments are now added via ajax and doesn't reload the page

- #374 LDAP config is discarded when LDAP can't be activated

- limited push/pull operations are now logged for git in the journal

- bumped mercurial to 2.2.X series

- added support for displaying submodules in file-browser

- #421 added bookmarks in changelog view

fixes

+++++

- fixed dev-version marker for stable when served from source codes

- fixed missing permission checks on show forks page

- #418 cast to unicode fixes in notification objects

- #426 fixed mention extracting regex

import logging

import traceback

import formencode

from formencode import htmlfill

from webob.exc import HTTPInternalServerError

from pylons import request, session, tmpl_context as c, url

from pylons.controllers.util import redirect

from pylons.i18n.translation import _

from sqlalchemy.exc import IntegrityError

from rhodecode.lib import helpers as h

from rhodecode.lib.auth import LoginRequired, HasPermissionAllDecorator, \

    HasPermissionAnyDecorator, HasRepoPermissionAllDecorator

from rhodecode.lib.base import BaseController, render

from rhodecode.lib.utils import invalidate_cache, action_logger, repo_name_slug

from rhodecode.lib.helpers import get_token

from rhodecode.model.meta import Session

from rhodecode.model.db import User, Repository, UserFollowing, RepoGroup

from rhodecode.model.forms import RepoForm

from rhodecode.model.scm import ScmModel

from rhodecode.model.repo import RepoModel

log = logging.getLogger(__name__)

class ReposController(BaseController):

    """

    REST Controller styled on the Atom Publishing Protocol"""

    # To properly map this controller, ensure your config/routing.py

    # file has a resource setup:

    #     map.resource('repo', 'repos')

    @LoginRequired()

    @HasPermissionAnyDecorator('hg.admin', 'hg.create.repository')

    def __before__(self):

        c.admin_user = session.get('admin_user')

        c.admin_username = session.get('admin_username')

        super(ReposController, self).__before__()

    def __load_defaults(self):

        c.repo_groups = RepoGroup.groups_choices()

        c.repo_groups_choices = map(lambda k: unicode(k[0]), c.repo_groups)

        repo_model = RepoModel()

        c.users_array = repo_model.get_users_js()

        c.users_groups_array = repo_model.get_users_groups_js()

    def __load_data(self, repo_name=None):

        """

        Load defaults settings for edit, and update

        :param repo_name:

        """

        self.__load_defaults()

        c.repo_info = db_repo = Repository.get_by_repo_name(repo_name)

        repo = db_repo.scm_instance

        if c.repo_info is None:

            h.flash(_('%s repository is not mapped to db perhaps'

                      ' it was created or renamed from the filesystem'

                      ' please run the application again'

                      ' in order to rescan repositories') % repo_name,

                      category='error')

            return redirect(url('repos'))

        c.default_user_id = User.get_by_username('default').user_id

        c.in_public_journal = UserFollowing.query()\

            .filter(UserFollowing.user_id == c.default_user_id)\

            .filter(UserFollowing.follows_repository == c.repo_info).scalar()

        if c.repo_info.stats:

            # this is on what revision we ended up so we add +1 for count

            last_rev = c.repo_info.stats.stat_on_revision + 1

        else:

            last_rev = 0

        c.stats_revision = last_rev

        c.repo_last_rev = repo.count() if repo.revisions else 0

        if last_rev == 0 or c.repo_last_rev == 0:

            c.stats_percentage = 0

        else:

            c.stats_percentage = '%.2f' % ((float((last_rev)) /

                                            c.repo_last_rev) * 100)

        defaults = RepoModel()._get_defaults(repo_name)

        c.repos_list = [('', _('--REMOVE FORK--'))]

        c.repos_list += [(x.repo_id, x.repo_name) for x in

                   Repository.query().order_by(Repository.repo_name).all()]

        return defaults

    @HasPermissionAllDecorator('hg.admin')

    def index(self, format='html'):

        """GET /repos: All items in the collection"""

        # url('repos')

        c.repos_list = ScmModel().get_repos(Repository.query()

                                            .order_by(Repository.repo_name)

                                            .all(), sort_key='name_sort')

        return render('admin/repos/repos.html')

    @HasPermissionAnyDecorator('hg.admin', 'hg.create.repository')

    def create(self):

        """

        POST /repos: Create a new item"""

        # url('repos')

        self.__load_defaults()

        form_result = {}

        try:

                            .to_python(dict(request.POST))

            RepoModel().create(form_result, self.rhodecode_user)

            if form_result['clone_uri']:

                h.flash(_('created repository %s from %s') \

                    % (form_result['repo_name'], form_result['clone_uri']),

                    category='success')

            else:

                h.flash(_('created repository %s') % form_result['repo_name'],

                    category='success')

            if request.POST.get('user_created'):

                # created by regular non admin user

                action_logger(self.rhodecode_user, 'user_created_repo',

                              form_result['repo_name_full'], self.ip_addr,

                              self.sa)

            else:

                action_logger(self.rhodecode_user, 'admin_created_repo',

                              form_result['repo_name_full'], self.ip_addr,

                              self.sa)

            Session.commit()

        except formencode.Invalid, errors:

            c.new_repo = errors.value['repo_name']

            if request.POST.get('user_created'):

                r = render('admin/repos/repo_add_create_repository.html')

            else:

                r = render('admin/repos/repo_add.html')

            return htmlfill.render(

                r,

                defaults=errors.value,

                errors=errors.error_dict or {},

                prefix_error=False,

                encoding="UTF-8")

        except Exception:

            log.error(traceback.format_exc())

            msg = _('error occurred during creation of repository %s') \

                    % form_result.get('repo_name')

            h.flash(msg, category='error')

        if request.POST.get('user_created'):

            return redirect(url('home'))

        return redirect(url('repos'))

    @HasPermissionAllDecorator('hg.admin')

    def new(self, format='html'):

        """GET /repos/new: Form to create a new item"""

        new_repo = request.GET.get('repo', '')

        c.new_repo = repo_name_slug(new_repo)

        self.__load_defaults()

        return render('admin/repos/repo_add.html')

    @HasPermissionAllDecorator('hg.admin')

    def update(self, repo_name):

        """

        PUT /repos/repo_name: Update an existing item"""

        # Forms posted to this method should contain a hidden field:

        #    <input type="hidden" name="_method" value="PUT" />

        # Or using helpers:

        #    h.form(url('repo', repo_name=ID),

        #           method='put')

        # url('repo', repo_name=ID)

        self.__load_defaults()

        repo_model = RepoModel()

        changed_name = repo_name

        _form = RepoForm(edit=True, old_data={'repo_name': repo_name},

        try:

            form_result = _form.to_python(dict(request.POST))

            repo = repo_model.update(repo_name, form_result)

            invalidate_cache('get_repo_cached_%s' % repo_name)

            h.flash(_('Repository %s updated successfully' % repo_name),

                    category='success')

            changed_name = repo.repo_name

            action_logger(self.rhodecode_user, 'admin_updated_repo',

                              changed_name, self.ip_addr, self.sa)

            Session.commit()

        except formencode.Invalid, errors:

            defaults = self.__load_data(repo_name)

            defaults.update(errors.value)

            return htmlfill.render(

                render('admin/repos/repo_edit.html'),

                defaults=defaults,

                errors=errors.error_dict or {},

                prefix_error=False,

                encoding="UTF-8")

        except Exception:

            log.error(traceback.format_exc())

            h.flash(_('error occurred during update of repository %s') \

                    % repo_name, category='error')

        return redirect(url('edit_repo', repo_name=changed_name))

    @HasPermissionAllDecorator('hg.admin')

    def delete(self, repo_name):

        """

        DELETE /repos/repo_name: Delete an existing item"""

        # Forms posted to this method should contain a hidden field:

        #    <input type="hidden" name="_method" value="DELETE" />

        # Or using helpers:

        #    h.form(url('repo', repo_name=ID),

        #           method='delete')

        # url('repo', repo_name=ID)

        repo_model = RepoModel()

        repo = repo_model.get_by_repo_name(repo_name)

        if not repo:

            h.flash(_('%s repository is not mapped to db perhaps'

                      ' it was moved or renamed  from the filesystem'

                      ' please run the application again'

                      ' in order to rescan repositories') % repo_name,

                      category='error')

            return redirect(url('repos'))

        try:

        """PUT /_admin/my_account_update: Update an existing item"""

        # Forms posted to this method should contain a hidden field:

        #    <input type="hidden" name="_method" value="PUT" />

        # Or using helpers:

        #    h.form(url('admin_settings_my_account_update'),

        #           method='put')

        # url('admin_settings_my_account_update', id=ID)

        user_model = UserModel()

        uid = self.rhodecode_user.user_id

        _form = UserForm(edit=True,

                         old_data={'user_id': uid,

                                   'email': self.rhodecode_user.email})()

        form_result = {}

        try:

            form_result = _form.to_python(dict(request.POST))

            user_model.update_my_account(uid, form_result)

            h.flash(_('Your account was updated successfully'),

                    category='success')

            Session.commit()

        except formencode.Invalid, errors:

            c.user = User.get(self.rhodecode_user.user_id)

            all_repos = self.sa.query(Repository)\

                .filter(Repository.user_id == c.user.user_id)\

                .order_by(func.lower(Repository.repo_name))\

                .all()

            c.user_repos = ScmModel().get_repos(all_repos)

            c.form = htmlfill.render(

                render('admin/users/user_edit_my_account_form.html'),

                defaults=errors.value,

                errors=errors.error_dict or {},

                prefix_error=False,

                encoding="UTF-8")

            return render('admin/users/user_edit_my_account.html')

        except Exception:

            log.error(traceback.format_exc())

            h.flash(_('error occurred during update of user %s') \

                    % form_result.get('username'), category='error')

        return redirect(url('my_account'))

    @NotAnonymous()

    @HasPermissionAnyDecorator('hg.admin', 'hg.create.repository')

    def create_repository(self):

        """GET /_admin/create_repository: Form to create a new item"""

        c.repo_groups = RepoGroup.groups_choices()

        c.repo_groups_choices = map(lambda k: unicode(k[0]), c.repo_groups)

        new_repo = request.GET.get('repo', '')

        c.new_repo = repo_name_slug(new_repo)

        return render('admin/repos/repo_add_create_repository.html')

    def get_hg_ui_settings(self):

        ret = self.sa.query(RhodeCodeUi).all()

        if not ret:

            raise Exception('Could not get application ui settings !')

        settings = {}

        for each in ret:

            k = each.ui_key

            v = each.ui_value

            if k == '/':

                k = 'root_path'

            if k.find('.') != -1:

                k = k.replace('.', '_')

            if each.ui_section == 'hooks':

                v = each.ui_active

            settings[each.ui_section + '_' + k] = v

        return settings

# (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/>.

from __future__ import with_statement

import os

import logging

import traceback

import tempfile

from pylons import request, response, tmpl_context as c, url

from pylons.i18n.translation import _

from pylons.controllers.util import redirect

from pylons.decorators import jsonify

from paste.fileapp import FileApp, _FileIter

from rhodecode.lib import diffs

from rhodecode.lib import helpers as h

from rhodecode.lib.compat import OrderedDict

from rhodecode.lib.utils2 import convert_line_endings, detect_mode, safe_str

from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator

from rhodecode.lib.base import BaseRepoController, render

from rhodecode.lib.utils import EmptyChangeset

from rhodecode.lib.vcs.conf import settings

from rhodecode.lib.vcs.exceptions import RepositoryError, \

    ChangesetDoesNotExistError, EmptyRepositoryError, \

    ImproperArchiveTypeError, VCSError, NodeAlreadyExistsError

from rhodecode.lib.vcs.nodes import FileNode

from rhodecode.model.repo import RepoModel

from rhodecode.model.scm import ScmModel

from rhodecode.model.db import Repository

from rhodecode.controllers.changeset import anchor_url, _ignorews_url,\

    _context_url, get_line_ctx, get_ignore_ws

log = logging.getLogger(__name__)

class FilesController(BaseRepoController):

    def __before__(self):

        super(FilesController, self).__before__()

        c.cut_off_limit = self.cut_off_limit

    def __get_cs_or_redirect(self, rev, repo_name, redirect_after=True):

        """

        Safe way to get changeset if error occur it redirects to tip with

        proper message

        :param rev: revision to fetch

        :param repo_name: repo name to redirect after

        """

        try:

            return c.rhodecode_repo.get_changeset(rev)

        except EmptyRepositoryError, e:

            if not redirect_after:

                return None

            url_ = url('files_add_home',

                       repo_name=c.repo_name,

                       revision=0, f_path='')

            add_new = '<a href="%s">[%s]</a>' % (url_, _('add new'))

            h.flash(h.literal(_('There are no files yet %s' % add_new)),

                    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'))

    def __get_filenode_or_redirect(self, repo_name, cs, path):

        """

        Returns file_node, if error occurs or given path is directory,

        it'll redirect to top level path

        :param repo_name: repo_name

        :param cs: given changeset

        :param path: path to lookup

        """

        try:

            file_node = cs.get_node(path)

            if file_node.is_dir():

                raise RepositoryError('given path is a directory')

        except RepositoryError, e:

            h.flash(str(e), category='warning')

            redirect(h.url('files_home', repo_name=repo_name,

                           revision=cs.raw_id))

        return file_node

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

                                   'repository.admin')

    def index(self, repo_name, revision, f_path, annotate=False):

        # redirect to given revision from form if given

        post_revision = request.POST.get('at_rev', None)

        if post_revision:

            cs = self.__get_cs_or_redirect(post_revision, repo_name)

            redirect(url('files_home', repo_name=c.repo_name,

                         revision=cs.raw_id, f_path=f_path))

        c.changeset = self.__get_cs_or_redirect(revision, repo_name)

        c.branch = request.GET.get('branch', None)

        c.f_path = f_path

        c.annotate = annotate

        cur_rev = c.changeset.revision

        # prev link

        try:

            prev_rev = c.rhodecode_repo.get_changeset(cur_rev).prev(c.branch)

            c.url_prev = url('files_home', repo_name=c.repo_name,

                         revision=prev_rev.raw_id, f_path=f_path)

            if c.branch:

                c.url_prev += '?branch=%s' % c.branch

        except (ChangesetDoesNotExistError, VCSError):

            c.url_prev = '#'

        # next link

        try:

            next_rev = c.rhodecode_repo.get_changeset(cur_rev).next(c.branch)

            c.url_next = url('files_home', repo_name=c.repo_name,

                     revision=next_rev.raw_id, f_path=f_path)

            if c.branch:

                c.url_next += '?branch=%s' % c.branch

        except (ChangesetDoesNotExistError, VCSError):

            c.url_next = '#'

        # files or dirs

        try:

            c.file = c.changeset.get_node(f_path)

            if c.file.is_file():

            else:

        except RepositoryError, e:

            h.flash(str(e), category='warning')

            redirect(h.url('files_home', repo_name=repo_name,

                           revision=revision))

        return render('files/files.html')

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

                                   'repository.admin')

    def rawfile(self, repo_name, revision, f_path):

        cs = self.__get_cs_or_redirect(revision, repo_name)

        file_node = self.__get_filenode_or_redirect(repo_name, cs, f_path)

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

            safe_str(f_path.split(Repository.url_sep())[-1])

        response.content_type = file_node.mimetype

        return file_node.content

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

                                   'repository.admin')

    def raw(self, repo_name, revision, f_path):

        cs = self.__get_cs_or_redirect(revision, repo_name)

        file_node = self.__get_filenode_or_redirect(repo_name, cs, f_path)

        raw_mimetype_mapping = {

            # map original mimetype to a mimetype used for "show as raw"

            # you can also provide a content-disposition to override the

            # default "attachment" disposition.

            # orig_type: (new_type, new_dispo)

            # show images inline:

            'image/x-icon': ('image/x-icon', 'inline'),

            'image/png': ('image/png', 'inline'),

            'image/gif': ('image/gif', 'inline'),

            'image/jpeg': ('image/jpeg', 'inline'),

            'image/svg+xml': ('image/svg+xml', 'inline'),

        }

        mimetype = file_node.mimetype

        try:

            mimetype, dispo = raw_mimetype_mapping[mimetype]

        except KeyError:

            # we don't know anything special about this, handle it safely

            if file_node.is_binary:

                # do same as download raw for binary files

                mimetype, dispo = 'application/octet-stream', 'attachment'

            else:

                # do not just use the original mimetype, but force text/plain,

                # otherwise it would serve text/html and that might be unsafe.

                # Note: underlying vcs library fakes text/plain mimetype if the

                # mimetype can not be determined and it thinks it is not

                # binary.This might lead to erroneous text display in some

                # cases, but helps in other cases, like with text files

                # without extension.

                mimetype, dispo = 'text/plain', 'inline'

        if dispo == 'attachment':

            dispo = 'attachment; filename=%s' % \

                        safe_str(f_path.split(os.sep)[-1])

        response.content_disposition = dispo

        response.content_type = mimetype

        return file_node.content

    @HasRepoPermissionAnyDecorator('repository.write', 'repository.admin')

    def edit(self, repo_name, revision, f_path):

        r_post = request.POST

        c.cs = self.__get_cs_or_redirect(revision, repo_name)

        c.file = self.__get_filenode_or_redirect(repo_name, c.cs, f_path)

        if c.file.is_binary:

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

                         revision=c.cs.raw_id, f_path=f_path))

        c.f_path = f_path

        if r_post:

            old_content = c.file.content

            sl = old_content.splitlines(1)

            first_line = sl[0] if sl else ''

            # modes:  0 - Unix, 1 - Mac, 2 - DOS

            mode = detect_mode(first_line, 0)

            content = convert_line_endings(r_post.get('content'), mode)

            message = r_post.get('message') or (_('Edited %s via RhodeCode')

                                                % (f_path))

            author = self.rhodecode_user.full_contact

            if content == old_content:

                h.flash(_('No changes'),

                    category='warning')

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

                                    revision='tip'))

            try:

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

                                             repo_name=repo_name, cs=c.cs,

                                             user=self.rhodecode_user,

                                             author=author, message=message,

                                             content=content, f_path=f_path)

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

                        category='success')

            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_edit.html')

    @HasRepoPermissionAnyDecorator('repository.write', 'repository.admin')

    def add(self, repo_name, revision, f_path):

        r_post = request.POST

        c.cs = self.__get_cs_or_redirect(revision, repo_name,

                                         redirect_after=False)

        if c.cs is None:

            c.cs = EmptyChangeset(alias=c.rhodecode_repo.alias)

        c.f_path = f_path

        if r_post:

            unix_mode = 0

            content = convert_line_endings(r_post.get('content'), unix_mode)

            message = r_post.get('message') or (_('Added %s via RhodeCode')

                                                % (f_path))

            location = r_post.get('location')

            filename = r_post.get('filename')

            file_obj = r_post.get('upload_file', None)

            if file_obj is not None and hasattr(file_obj, 'filename'):

                filename = file_obj.filename

                content = file_obj.file

            node_path = os.path.join(location, filename)

            author = self.rhodecode_user.full_contact

            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')

            if c.rhodecode_repo.alias == 'hg':

                # 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')

        fd, archive = tempfile.mkstemp()

        t = open(archive, 'wb')

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

        t.close()

        def get_chunked_archive(archive):

            stream = open(archive, 'rb')

            while True:

                data = stream.read(16 * 1024)

                if not data:

                    stream.close()

                    os.close(fd)

                    os.remove(archive)

                    break

                yield data

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

                                           % (repo_name, revision[:12], ext))

        response.content_type = str(content_type)

        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

        c.changes = OrderedDict()

        c.changes[diff2] = []

        try:

            if diff1 not in ['', None, 'None', '0' * 12, '0' * 40]:

                c.changeset_1 = c.rhodecode_repo.get_changeset(diff1)

                node1 = c.changeset_1.get_node(f_path)

            else:

                c.changeset_1 = EmptyChangeset(repo=c.rhodecode_repo)

                node1 = FileNode('.', '', changeset=c.changeset_1)

            if diff2 not in ['', None, 'None', '0' * 12, '0' * 40]:

                c.changeset_2 = c.rhodecode_repo.get_changeset(diff2)

                node2 = c.changeset_2.get_node(f_path)

            else:

                c.changeset_2 = EmptyChangeset(repo=c.rhodecode_repo)

                node2 = FileNode('.', '', changeset=c.changeset_2)

        except RepositoryError: