~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2005 Canonical Ltd

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (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, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

"""Export a Tree to a non-versioned directory.

"""

import os

import StringIO

from bzrlib import errors, osutils

from bzrlib.export import _export_iter_entries

from bzrlib.filters import (

    ContentFilterContext,

    filtered_output_bytes,

    )

from bzrlib.trace import mutter

def dir_exporter(tree, dest, root, subdir, filtered=False):

    """Export this tree to a new directory.

    `dest` should not exist, and will be created holding the

    contents of this tree.

    TODO: To handle subdirectories we need to create the

           directories first.

    :note: If the export fails, the destination directory will be

           left in a half-assed state.

    """

    mutter('export version %r', tree)

    os.mkdir(dest)

    for dp, ie in _export_iter_entries(tree, subdir):

        fullpath = osutils.pathjoin(dest, dp)

        if ie.kind == "file":

            if filtered:

                chunks = tree.get_file_lines(ie.file_id)

                filters = tree._content_filter_stack(dp)

                context = ContentFilterContext(dp, tree, ie)

                contents = filtered_output_bytes(chunks, filters, context)

                content = ''.join(contents)

                fileobj = StringIO.StringIO(content)

            else:

                fileobj = tree.get_file(ie.file_id)

            osutils.pumpfile(fileobj, file(fullpath, 'wb'))

            if tree.is_executable(ie.file_id):

                os.chmod(fullpath, 0755)

        elif ie.kind == "directory":

            os.mkdir(fullpath)

        elif ie.kind == "symlink":

            try:

                os.symlink(ie.symlink_target, fullpath)

            except OSError,e:

                raise errors.BzrError(

                    "Failed to create symlink %r -> %r, error: %s"

                    % (fullpath, self.symlink_target, e))

        else:

            raise errors.BzrError("don't know how to export {%s} of kind %r" %

               (ie.file_id, ie.kind))