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# -*- mode: python; coding: utf-8 -*-
# :Progetto: vcpx -- Codeville details
# :Creato:   gio 05 mag 2005 23:47:45 CEST
# :Autore:   Lele Gaifax <lele@nautilus.homeip.net>
# :Licenza:  GNU General Public License

This module implements the backends for Codeville.

__docformat__ = 'reStructuredText'

from shwrap import ExternalCommand
from target import SyncronizableTargetWorkingDir, TargetInitializationFailure
from source import ChangesetApplicationFailure

class CdvWorkingDir(SyncronizableTargetWorkingDir):

    ## SyncronizableTargetWorkingDir

    def _replayChangeset(self, changeset):
        Under Codeville, it's safer to explicitly edit modified items.

        SyncronizableTargetWorkingDir._replayChangeset(self, changeset)

        names = [e.name for e in changeset.modifiedEntries()]
        cmd = self.repository.command("edit")
        ExternalCommand(cwd=self.basedir, command=cmd).execute(names)

    def _addPathnames(self, names):
        Add some new filesystem objects.

        cmd = self.repository.command("add")
        ExternalCommand(cwd=self.basedir, command=cmd).execute(names)

    def _commit(self, date, author, patchname, changelog=None, entries=None):
        Commit the changeset.

        from locale import getpreferredencoding

        encoding = ExternalCommand.FORCE_ENCODING or getpreferredencoding()

        logmessage = []
        if patchname:
        if changelog:
            logmessage.append(changelog.replace('%', '%%').encode(encoding))

        cmd = self.repository.command("-u", author.encode(encoding), "commit",
                                      "-m", '\n'.join(logmessage),
                                      "-D", date.strftime('%Y/%m/%d %H:%M:%S UTC'))

        if not entries:
            entries = ['...']

        c = ExternalCommand(cwd=self.basedir, command=cmd)

        if c.exit_status:
            raise ChangesetApplicationFailure("%s returned status %d" %
                                              (str(c), c.exit_status))

    def _removePathnames(self, names):
        Remove some filesystem object.

        cmd = self.repository.command("remove")
        ExternalCommand(cwd=self.basedir, command=cmd).execute(names)

    def _renamePathname(self, oldname, newname):
        Rename a filesystem object.

        cmd = self.repository.command("rename")
        ExternalCommand(cwd=self.basedir, command=cmd).execute(oldname, newname)

    def _prepareTargetRepository(self):
        Create the base directory if it doesn't exist, and the
        repository as well in the new working directory, executing
        a ``cdv init`` there.

        from os.path import join, exists

        if not exists(join(self.basedir, self.repository.METADIR)):
            init = ExternalCommand(cwd=self.basedir,

            if init.exit_status:
                raise TargetInitializationFailure(
                    "%s returned status %s" % (str(init), init.exit_status))

    def _prepareWorkingDirectory(self, source_repo):
        Set the user on the repository.

        from os import getenv
        from os.path import join

        cmd = self.repository.command("set", "user")
        user = getenv('CDV_USER') or getenv('LOGNAME')
        ExternalCommand(cwd=self.basedir, command=cmd).execute(user)

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