def extract_tar(archive, output_folder, handle_whiteout=False):
'''extract a tar archive to a specified output folder
Parameters
==========
archive: the archive file to extract
output_folder: the output folder to extract to
handle_whiteout: use docker2oci variation to handle whiteout files
'''
from .terminal import run_command
# Do we want to remove whiteout files?
if handle_whiteout is True:
return _extract_tar(archive, output_folder)
# If extension is .tar.gz, use -xzf
args = '-xf'
if archive.endswith(".tar.gz"):
args = '-xzf'
# Just use command line, more succinct.
command = ["tar", args, archive, "-C", output_folder, "--exclude=dev/*"]
if not bot.is_quiet():
print("Extracting %s" % archive)
return run_command(command)
def _extract_tar(archive, output_folder):
'''use blob2oci to handle whiteout files for extraction. Credit for this
script goes to docker2oci by Olivier Freyermouth, and see script
folder for license.
Parameters
==========
archive: the archive to extract
output_folder the output folder (sandbox) to extract to
'''
from .terminal import (run_command, which)
result = which('blob2oci')
if result['return_code'] != 0:
bot.error('Cannot find blob2oci script on path, exiting.')
sys.exit(1)
script = result['message']
command = ['exec', script, '--layer', archive, '--extract', output_folder]
if not bot.is_quiet():
print("Extracting %s" % archive)
return run_command(command)
def extract_tar(archive, output_folder):
'''extract a tar archive to a specified output folder
Parameters
==========
archive: the archive file to extract
output_folder: the output folder to extract to
'''
from .terminal import run_command
# If extension is .tar.gz, use -xzf
args = '-xf'
if archive.endswith(".tar.gz"):
args = '-xzf'
# Just use command line, more succinct.
command = ["tar", args, archive, "-C", output_folder, "--exclude=dev/*"]
if not bot.is_quiet():
print("Extracting %s" % archive)
return run_command(command)
def _extract_tar(archive, output_folder):
"""use blob2oci to handle whiteout files for extraction. Credit for this
script goes to docker2oci by Olivier Freyermouth, and see script
folder for license.
Parameters
==========
archive: the archive to extract
output_folder the output folder (sandbox) to extract to
"""
from .terminal import run_command, which
result = which("blob2oci")
if result["return_code"] != 0:
bot.exit("Cannot find blob2oci script on path, exiting.")
script = result["message"]
command = ["exec", script, "--layer", archive, "--extract", output_folder]
if not bot.is_quiet():
print("Extracting %s" % archive)
return run_command(command)
