def compress(string, level=6):
if level < Z_BEST_SPEED or level > Z_BEST_COMPRESSION:
raise error, "Bad compression level"
deflater = Deflater(level, 0)
deflater.setInput(string, 0, len(string))
deflater.finish()
return _get_deflate_data(deflater)
def __init__(self, level=6, method=DEFLATED, wbits=MAX_WBITS,
memLevel=0, strategy=0):
if abs(wbits) > MAX_WBITS or abs(wbits) < 8:
raise ValueError, "Invalid initialization option"
self.deflater = Deflater(level, wbits < 0)
self.deflater.setStrategy(strategy)
if wbits < 0:
_get_deflate_data(self.deflater)
self._ended = False
def compress(string, level=6):
if level < Z_BEST_SPEED or level > Z_BEST_COMPRESSION:
raise error("Bad compression level")
deflater = Deflater(level, 0)
try:
string = _to_input(string)
deflater.setInput(string, 0, len(string))
deflater.finish()
return _get_deflate_data(deflater)
finally:
deflater.end()
def __init__(self, level=6, method=DEFLATED, wbits=MAX_WBITS,
memLevel=0, strategy=0):
if abs(wbits) & 16:
if wbits > 0:
wbits -= 16
else:
wbits += 16
self._gzip = True
else:
self._gzip = False
if abs(wbits) > MAX_WBITS or abs(wbits) < 8:
raise ValueError, "Invalid initialization option: %s" % (wbits,)
self.deflater = Deflater(level, wbits < 0 or self._gzip)
self.deflater.setStrategy(strategy)
self._ended = False
self._size = 0
self._crc32 = CRC32()
if not sys.platform.startswith('java'):
import zlib
def _compress(text):
return zlib.compress(text, 9)
else:
# Custom compress implementation needed to avoid memory leak:
# http://bugs.jython.org/issue1775
# This is based on the zlib.compress in Jython 2.5.2 but has a memory
# leak fix and is also a little faster.
from java.util.zip import Deflater
import jarray
_DEFLATOR = Deflater(9, False)
def _compress(text):
_DEFLATOR.setInput(text)
_DEFLATOR.finish()
buf = jarray.zeros(1024, 'b')
compressed = []
while not _DEFLATOR.finished():
length = _DEFLATOR.deflate(buf, 0, 1024)
compressed.append(buf[:length].tostring())
_DEFLATOR.reset()
return ''.join(compressed)
