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# Copyright (C) 2005, 2006, 2008-2011 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
import sys
import tarfile
from bzrlib import (
errors,
osutils,
)
from bzrlib.export import _export_iter_entries
from bzrlib.filters import (
ContentFilterContext,
filtered_output_bytes,
)
def export_tarball(tree, ball, root, subdir=None, filtered=False,
force_mtime=None):
"""Export tree contents to a tarball.
:param tree: Tree to export
:param ball: Tarball to export to
:param filtered: Whether to apply filters
:param subdir: Sub directory to export
:param force_mtime: Option mtime to force, instead of using
tree timestamps.
"""
for dp, ie in _export_iter_entries(tree, subdir):
filename = osutils.pathjoin(root, dp).encode('utf8')
item = tarfile.TarInfo(filename)
if force_mtime is not None:
item.mtime = force_mtime
else:
item.mtime = tree.get_file_mtime(ie.file_id, dp)
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 = tree.get_file_size(ie.file_id)
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 = tree.get_symlink_target(ie.file_id)
fileobj = None
else:
raise errors.BzrError("don't know how to export {%s} of kind %r" %
(ie.file_id, ie.kind))
ball.addfile(item, fileobj)
def tgz_exporter(tree, dest, root, subdir, filtered=False, force_mtime=None):
"""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".
"""
import gzip
if force_mtime is not None:
root_mtime = force_mtime
elif (getattr(tree, "repository", None) and
getattr(tree, "get_revision_id", None)):
# If this is a revision tree, use the revisions' timestamp
rev = tree.repository.get_revision(tree.get_revision_id())
root_mtime = rev.timestamp
elif tree.get_root_id() is not None:
root_mtime = tree.get_file_mtime(tree.get_root_id())
else:
root_mtime = None
if dest == '-':
basename = None
stream = sys.stdout
else:
stream = open(dest, 'wb')
# gzip file is used with an explicit fileobj so that
# the basename can be stored in the gzip file rather than
# dest. (bug 102234)
basename = os.path.basename(dest)
try:
stream = gzip.GzipFile(basename, 'w', fileobj=stream, mtime=root_mtime)
except TypeError:
# Python < 2.7 doesn't support the mtime argument
stream = gzip.GzipFile(basename, 'w', fileobj=stream)
ball = tarfile.open(None, 'w|', fileobj=stream)
export_tarball(tree, ball, root, subdir, filtered=filtered,
force_mtime=force_mtime)
ball.close()
def tbz_exporter(tree, dest, root, subdir, filtered=False, force_mtime=None):
"""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".
"""
if dest == '-':
ball = tarfile.open(None, 'w|bz2', sys.stdout)
else:
# 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:bz2')
export_tarball(tree, ball, root, subdir, filtered=filtered,
force_mtime=force_mtime)
ball.close()
def plain_tar_exporter(tree, dest, root, subdir, compression=None,
filtered=False, force_mtime=None):
"""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".
"""
if dest == '-':
stream = sys.stdout
else:
stream = open(dest, 'wb')
ball = tarfile.open(None, 'w|', stream)
export_tarball(tree, ball, root, subdir, filtered=filtered,
force_mtime=force_mtime)
ball.close()
def tar_xz_exporter(tree, dest, root, subdir, filtered=False,
force_mtime=None):
return tar_lzma_exporter(tree, dest, root, subdir, filtered=filtered,
force_mtime=force_mtime, compression_format="xz")
def tar_lzma_exporter(tree, dest, root, subdir, filtered=False, force_mtime=None, compression_format="alone"):
"""Export this tree to a new .tar.lzma file.
`dest` will be created holding the contents of this tree; if it
already exists, it will be clobbered, like with "tar -c".
"""
if dest == '-':
raise errors.BzrError("Writing to stdout not supported for .tar.lzma")
try:
import lzma
except ImportError, e:
raise errors.DependencyNotPresent('lzma', e)
stream = lzma.LZMAFile(dest.encode(osutils._fs_enc), 'w',
options={"format": compression_format})
ball = tarfile.open(None, 'w:', fileobj=stream)
export_tarball(tree, ball, root, subdir, filtered=filtered,
force_mtime=force_mtime)
ball.close()
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