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How to use extract_tarball method in autotest

Best Python code snippet using autotest_python

mozfile.py

Source:mozfile.py

...10import tarfile11import zipfile12__all__ = ['extract_tarball', 'extract_zip', 'extract', 'rmtree']13### utilities for extracting archives14def extract_tarball(src, dest):15    """extract a .tar file"""16    bundle = tarfile.open(src)17    namelist = bundle.getnames()18    for name in namelist:19        bundle.extract(name, path=dest)20    bundle.close()21    return namelist22def extract_zip(src, dest):23    """extract a zip file"""24    bundle = zipfile.ZipFile(src)25    namelist = bundle.namelist()26    for name in namelist:27        filename = os.path.realpath(os.path.join(dest, name))28        if name.endswith('/'):29            os.makedirs(filename)30        else:31            path = os.path.dirname(filename)32            if not os.path.isdir(path):33                os.makedirs(path)34            _dest = open(filename, 'wb')35            _dest.write(bundle.read(name))36            _dest.close()37    bundle.close()38    return namelist39def extract(src, dest=None):40    """41    Takes in a tar or zip file and extracts it to dest42    If dest is not specified, extracts to os.path.dirname(src)43    Returns the list of top level files that were extracted44    """45    assert os.path.exists(src), "'%s' does not exist" % src46    assert not os.path.isfile(dest), "dest cannot be a file"47    if dest is None:48        dest = os.path.dirname(src)49    elif not os.path.isdir(dest):50        os.makedirs(dest)51    if zipfile.is_zipfile(src):52        namelist = extract_zip(src, dest)53    elif tarfile.is_tarfile(src):54        namelist = extract_tarball(src, dest)55    else:56        raise Exception("mozfile.extract: no archive format found for '%s'" %57                        src)58    # namelist returns paths with forward slashes even in windows59    top_level_files = [os.path.join(dest, name) for name in namelist60                       if len(name.rstrip('/').split('/')) == 1]61    # namelist doesn't include folders, append these to the list62    for name in namelist:63        root = os.path.join(dest, name[:name.find('/')])64        if root not in top_level_files:65            top_level_files.append(root)66    return top_level_files67def rmtree(dir):68    """This is a replacement for shutil.rmtree that works better under...

tarballfetcher.py

Source:tarballfetcher.py

...12    sys.stdout.write('Downloading %s... ' % url)13    sys.stdout.flush()14    urlretrieve(url, filename)15    sys.stdout.write('DONE\n')16def extract_tarball(tarball_filename):17    tarball = tarfile.open(tarball_filename, 'r:gz')18    sys.stdout.write('Extracting %s... ' % tarball_filename)19    sys.stdout.flush()20    tarball.extractall('.')21    sys.stdout.write('DONE\n')22def sha256_file(filename):23    return hashlib.sha256(open(filename, 'rb').read()).hexdigest()24def download_and_extract_tarball(tarball_url,25                                 tarball_filename=None,26                                 expected_sha256=None):27    if tarball_filename is None:28        tarball_filename = os.path.basename(urlparse(tarball_url).path)29    if not os.path.exists(tarball_filename):30        download_file(tarball_url, tarball_filename)31    if expected_sha256 is not None:32        sys.stdout.write('Checking that SHA256 of %s is %s... ' %33                         (tarball_filename, expected_sha256))34        actual_sha256 = sha256_file(tarball_filename)35        sys.stdout.write('SHA256 is %s. ' % actual_sha256)36        if actual_sha256 == expected_sha256:37            sys.stdout.write('OK\n')38        else:39            sys.stdout.write('Incorrect SHA256!\n')40            sys.exit(1)...

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