def extract_compress (archive, compression, cmd, **kwargs):
"""Extract a compressed archive."""
cmdlist = [util.shell_quote(cmd)]
if kwargs['verbose']:
cmdlist.append('-v')
outfile = util.get_single_outfile(kwargs['outdir'], archive)
cmdlist.extend(['-c', util.shell_quote(archive), '>',
util.shell_quote(outfile)])
return (cmdlist, {'shell': True})
def extract_singlefile_standard (archive, compression, cmd, **kwargs):
"""Standard routine to extract a singlefile archive (like gzip)."""
cmdlist = [util.shell_quote(cmd)]
if kwargs['verbose']:
cmdlist.append('-v')
outfile = util.get_single_outfile(kwargs['outdir'], archive)
cmdlist.extend(['-c', '-d', '--', util.shell_quote(archive), '>',
util.shell_quote(outfile)])
return (cmdlist, {'shell': True})
def extract_lrzip (archive, compression, cmd, **kwargs):
"""Extract a LRZIP archive."""
# Since extracted files will be placed in the current directory,
# the cwd argument has to be the output directory.
cmdlist = [cmd, '-d']
if kwargs['verbose']:
cmdlist.append('-v')
outfile = util.get_single_outfile(kwargs['outdir'], archive)
cmdlist.extend(["-o", outfile, os.path.abspath(archive)])
return (cmdlist, {'cwd': kwargs['outdir']})
def extract_bzip2 (archive, compression, cmd, **kwargs):
"""Extract a BZIP2 archive with the bz2 Python module."""
verbose = kwargs['verbose']
outdir = kwargs['outdir']
# XXX honor outdir
if verbose:
util.log_info('extracting %s...' % archive)
targetname = util.get_single_outfile(kwargs['outdir'], archive)
bz2file = bz2.BZ2File(archive)
try:
targetfile = open(targetname, 'wb')
try:
data = bz2file.read(READ_SIZE_BYTES)
while data:
targetfile.write(data)
data = bz2file.read(READ_SIZE_BYTES)
finally:
targetfile.close()
finally:
bz2file.close()
if verbose:
util.log_info('... extracted to %s' % targetname)
return None