~launchpad-pqm/launchpad/devel

# Copyright 2009 Canonical Ltd.  This software is licensed under the

# GNU Affero General Public License version 3 (see the file LICENSE).

"""Browser code used to implement virtual '.bzr' directories."""

__metaclass__ = type

__all__ = [

    'BranchRef'

    ]

from zope.interface import implements

from zope.publisher.interfaces.browser import IBrowserPublisher

from canonical.config import config

from lp.services.webapp import (

    Navigation,

    stepthrough,

    stepto,

    )

from lp.code.interfaces.branchref import IBranchRef

class BranchRef:

    implements(IBranchRef)

    def __init__(self, branch):

        self.branch = branch

# XXX jamesh 2006-09-26:

# Eventually we will be able to change this to serve a simple HTTP

# redirect for 'branch-format' and have bzr do the rest.  However,

# current Bazaar releases would continue to request branch data files

# at this location.

#

# Synthesising a branch reference provides the desired behaviour with

# current Bazaar releases, however.

class BranchRefNavigation(Navigation):

    usedfor = IBranchRef

    @stepto('branch-format')

    def branch_format(self):

        return StaticContentView('Bazaar-NG meta directory, format 1\n')

    @stepthrough('branch')

    def traverse_branch(self, name):

        if name == 'format':

            return StaticContentView('Bazaar-NG Branch Reference Format 1\n')

        elif name == 'location':

            return StaticContentView(config.codehosting.supermirror_root +

                                     self.context.branch.unique_name)

        else:

            return None

class StaticContentView:

    implements(IBrowserPublisher)

    def __init__(self, contents):

        self.contents = contents

    def __call__(self):

        return self.contents

    def browserDefault(self, request):

        return self, ()