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# Copyright 2010 Baptiste Lepilleur and The JsonCpp Authors
# Distributed under MIT license, or public domain if desired and
# recognized in your jurisdiction.
# See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
from contextlib import closing
import os
import tarfile
TARGZ_DEFAULT_COMPRESSION_LEVEL = 9
def make_tarball(tarball_path, sources, base_dir, prefix_dir=''):
"""Parameters:
tarball_path: output path of the .tar.gz file
sources: list of sources to include in the tarball, relative to the current directory
base_dir: if a source file is in a sub-directory of base_dir, then base_dir is stripped
from path in the tarball.
prefix_dir: all files stored in the tarball be sub-directory of prefix_dir. Set to ''
to make them child of root.
"""
base_dir = os.path.normpath(os.path.abspath(base_dir))
def archive_name(path):
"""Makes path relative to base_dir."""
path = os.path.normpath(os.path.abspath(path))
common_path = os.path.commonprefix((base_dir, path))
archive_name = path[len(common_path):]
if os.path.isabs(archive_name):
archive_name = archive_name[1:]
return os.path.join(prefix_dir, archive_name)
def visit(tar, dirname, names):
for name in names:
path = os.path.join(dirname, name)
if os.path.isfile(path):
path_in_tar = archive_name(path)
tar.add(path, path_in_tar)
compression = TARGZ_DEFAULT_COMPRESSION_LEVEL
with closing(tarfile.TarFile.open(tarball_path, 'w:gz',
compresslevel=compression)) as tar:
for source in sources:
source_path = source
if os.path.isdir(source):
for dirpath, dirnames, filenames in os.walk(source_path):
visit(tar, dirpath, filenames)
else:
path_in_tar = archive_name(source_path)
tar.add(source_path, path_in_tar) # filename, arcname
def decompress(tarball_path, base_dir):
"""Decompress the gzipped tarball into directory base_dir.
"""
with closing(tarfile.TarFile.open(tarball_path)) as tar:
tar.extractall(base_dir)
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