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Support creation of BZIP2 and GZIP files with Python modules.

This commit is contained in:
Bastian Kleineidam 2012-05-11 23:12:37 +02:00
parent 8304658d4e
commit a0669fd438
3 changed files with 54 additions and 3 deletions
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3
patoolib/__init__.py
View File

@ -102,7 +102,7 @@ ArchivePrograms = {
None: ('7z', '7za'),
'extract': ('pbzip2', 'lbzip2', 'bzip2', 'pybz2'),
'test': ('pbzip2', 'lbzip2', 'bzip2'),
'create': ('pbzip2', 'lbzip2', 'bzip2'),
'create': ('pbzip2', 'lbzip2', 'bzip2', 'pybz2'),
'list': ('echo',),
},
'tar': {
@ -118,6 +118,7 @@ ArchivePrograms = {
'gzip': {
None: ('pigz', 'gzip', '7z', '7za'),
'extract': ('pygzip',),
'create': ('pygzip',),
},
'lzh': {
None: ('lha',),

27
patoolib/programs/pybz2.py
View File

@ -24,7 +24,7 @@ except ImportError:
READ_SIZE_BYTES = 1024*1024
def extract_bzip2 (archive, encoding, cmd, **kwargs):
"""Extract a BZIP2 archive with the bz2 Python module functionality."""
"""Extract a BZIP2 archive with the bz2 Python module."""
verbose = kwargs['verbose']
if verbose:
util.log_info('extracting %s...' % archive)
@ -44,3 +44,28 @@ def extract_bzip2 (archive, encoding, cmd, **kwargs):
if verbose:
util.log_info('... extracted to %s' % targetname)
return None
def create_bzip2 (archive, encoding, cmd, *args, **kwargs):
"""Create a BZIP2 archive with the bz2 Python module."""
verbose = kwargs['verbose']
if verbose:
util.log_info('creating %s...' % archive)
if len(args) > 1:
util.log_error('multi-file compression not supported in Python bz2')
bz2file = bz2.BZ2File(archive, 'wb')
try:
filename = args[0]
srcfile = open(filename)
try:
data = srcfile.read(READ_SIZE_BYTES)
while data:
bz2file.write(data)
data = srcfile.read(READ_SIZE_BYTES)
if verbose:
util.log_info('... added %s' % filename)
finally:
srcfile.close()
finally:
bz2file.close()
return None

27
patoolib/programs/pygzip.py
View File

@ -22,7 +22,7 @@ from patoolib import util
READ_SIZE_BYTES = 1024*1024
def extract_gzip (archive, encoding, cmd, **kwargs):
"""Extract a GZIP archive with the gzip Python module functionality."""
"""Extract a GZIP archive with the gzip Python module."""
verbose = kwargs['verbose']
if verbose:
util.log_info('extracting %s...' % archive)
@ -42,3 +42,28 @@ def extract_gzip (archive, encoding, cmd, **kwargs):
if verbose:
util.log_info('... extracted to %s' % targetname)
return None
def create_gzip (archive, encoding, cmd, *args, **kwargs):
"""Create a GZIP archive with the gzip Python module."""
verbose = kwargs['verbose']
if verbose:
util.log_info('creating %s...' % archive)
if len(args) > 1:
util.log_error('multi-file compression not supported in Python gzip')
gzipfile = gzip.GzipFile(archive, 'wb')
try:
filename = args[0]
srcfile = open(filename)
try:
data = srcfile.read(READ_SIZE_BYTES)
while data:
gzipfile.write(data)
data = srcfile.read(READ_SIZE_BYTES)
if verbose:
util.log_info('... added %s' % filename)
finally:
srcfile.close()
finally:
gzipfile.close()
return None