~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2005, 2006, 2008, 2009, 2010 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 StringIO

import sys

import tarfile

import time

from bzrlib import export, osutils

from bzrlib.export import _export_iter_entries

from bzrlib.filters import (

    ContentFilterContext,

    filtered_output_bytes,

    )

from bzrlib.trace import mutter

def tar_exporter(tree, dest, root, subdir, compression=None, filtered=False,

                 per_file_timestamps=False):

    """Export this tree to a new tar file.

    `dest` will be created holding the contents of this tree; if it

    already exists, it will be clobbered, like with "tar -c".

    """

    mutter('export version %r', tree)

    now = time.time()

    compression = str(compression or '')

    if dest == '-':

        # XXX: If no root is given, the output tarball will contain files

        # named '-/foo'; perhaps this is the most reasonable thing.

        ball = tarfile.open(None, 'w|' + compression, sys.stdout)

    else:

        if root is None:

            root = export.get_root_name(dest)

        # tarfile.open goes on to do 'os.getcwd() + dest' for opening

        # the tar file. With dest being unicode, this throws UnicodeDecodeError

        # unless we encode dest before passing it on. This works around

        # upstream python bug http://bugs.python.org/issue8396

        # (fixed in Python 2.6.5 and 2.7b1)

        ball = tarfile.open(dest.encode(osutils._fs_enc), 'w:' + compression)

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

        filename = osutils.pathjoin(root, dp).encode('utf8')

        item = tarfile.TarInfo(filename)

        if per_file_timestamps:

            item.mtime = tree.get_file_mtime(ie.file_id, dp)

        else:

            item.mtime = now

        if ie.kind == "file":

            item.type = tarfile.REGTYPE

            if tree.is_executable(ie.file_id):

                item.mode = 0755

            else:

                item.mode = 0644

            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)

                item.size = len(content)

                fileobj = StringIO.StringIO(content)

            else:

                item.size = ie.text_size

                fileobj = tree.get_file(ie.file_id)

        elif ie.kind == "directory":

            item.type = tarfile.DIRTYPE

            item.name += '/'

            item.size = 0

            item.mode = 0755

            fileobj = None

        elif ie.kind == "symlink":

            item.type = tarfile.SYMTYPE

            item.size = 0

            item.mode = 0755

            item.linkname = ie.symlink_target

            fileobj = None

        else:

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

                           (ie.file_id, ie.kind))

        ball.addfile(item, fileobj)

    ball.close()

def tgz_exporter(tree, dest, root, subdir, filtered=False,

                 per_file_timestamps=False):

    tar_exporter(tree, dest, root, subdir, compression='gz',

                 filtered=filtered, per_file_timestamps=per_file_timestamps)

def tbz_exporter(tree, dest, root, subdir, filtered=False,

                 per_file_timestamps=False):

    tar_exporter(tree, dest, root, subdir, compression='bz2',

                 filtered=filtered, per_file_timestamps=per_file_timestamps)