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Viewing changes to bzrlib/smart/bzrdir.py

  • Committer: Andrew Bennetts
  • Date: 2008-02-07 07:05:13 UTC
  • mto: This revision was merged to the branch mainline in revision 3398.
  • Revision ID: andrew.bennetts@canonical.com-20080207070513-u7tvul100g1yn6n7
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bzrlib/smart/bzrdir.py
 
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# Copyright (C) 2006 Canonical Ltd
 
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#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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"""Server-side bzrdir related request implmentations."""
 
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from bzrlib import errors
 
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from bzrlib.bzrdir import BzrDir, BzrDirFormat
 
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from bzrlib.smart.request import (
 
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    FailedSmartServerResponse,
 
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    SmartServerRequest,
 
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    SuccessfulSmartServerResponse,
 
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    )
 
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class SmartServerRequestOpenBzrDir(SmartServerRequest):
 
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    def do(self, path):
 
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        from bzrlib.bzrdir import BzrDirFormat
 
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        t = self._backing_transport.clone(path)
 
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        default_format = BzrDirFormat.get_default_format()
 
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        real_bzrdir = default_format.open(t, _found=True)
 
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        try:
 
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            real_bzrdir._format.probe_transport(t)
 
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        except (errors.NotBranchError, errors.UnknownFormatError):
 
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            answer = 'no'
 
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        else:
 
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            answer = 'yes'
 
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        return SuccessfulSmartServerResponse((answer,))
 
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class SmartServerRequestFindRepository(SmartServerRequest):
 
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    def do(self, path):
 
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        """try to find a repository from path upwards
 
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        This operates precisely like 'bzrdir.find_repository'.
 
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        If a bzrdir is not present, an exception is propogated
 
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        rather than 'no branch' because these are different conditions.
 
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        :return: norepository or ok, relpath.
 
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        """
 
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        bzrdir = BzrDir.open_from_transport(self._backing_transport.clone(path))
 
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        try:
 
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            repository = bzrdir.find_repository()
 
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            # the relpath of the bzrdir in the found repository gives us the 
 
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            # path segments to pop-out.
 
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            relpath = repository.bzrdir.root_transport.relpath(bzrdir.root_transport.base)
 
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            if len(relpath):
 
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                segments = ['..'] * len(relpath.split('/'))
 
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            else:
 
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                segments = []
 
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            if repository.supports_rich_root():
 
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                rich_root = 'yes'
 
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            else:
 
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                rich_root = 'no'
 
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            if repository._format.supports_tree_reference:
 
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                tree_ref = 'yes'
 
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            else:
 
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                tree_ref = 'no'
 
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            return SuccessfulSmartServerResponse(('ok', '/'.join(segments), rich_root, tree_ref))
 
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        except errors.NoRepositoryPresent:
 
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            return FailedSmartServerResponse(('norepository', ))
 
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class SmartServerRequestInitializeBzrDir(SmartServerRequest):
 
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    def do(self, path):
 
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        """Initialize a bzrdir at path.
 
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        The default format of the server is used.
 
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        :return: SmartServerResponse(('ok', ))
 
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        """
 
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        target_transport = self._backing_transport.clone(path)
 
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        BzrDirFormat.get_default_format().initialize_on_transport(target_transport)
 
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        return SuccessfulSmartServerResponse(('ok', ))
 
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class SmartServerRequestOpenBranch(SmartServerRequest):
 
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    def do(self, path):
 
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        """try to open a branch at path and return ok/nobranch.
 
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        If a bzrdir is not present, an exception is propogated
 
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        rather than 'no branch' because these are different conditions.
 
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        """
 
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        bzrdir = BzrDir.open_from_transport(self._backing_transport.clone(path))
 
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        try:
 
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            reference_url = bzrdir.get_branch_reference()
 
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            if reference_url is None:
 
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                return SuccessfulSmartServerResponse(('ok', ''))
 
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            else:
 
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                return SuccessfulSmartServerResponse(('ok', reference_url))
 
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        except errors.NotBranchError:
 
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            return FailedSmartServerResponse(('nobranch', ))