Data error during extraction #57
Description
Error when running example:
Traceback (most recent call last):
File "E:\Python\7ztest.py", line 38, in <module>
sevenZfile.extractall('.')
File "E:\Python\7ztest.py", line 33, in extractall
outfile.write(self.archive.getmember(name).read())
File "E:\Python\py7zlib.py", line 632, in read
data = getattr(self, decoder)(coder, data, level, num_coders)
File "E:\Python\py7zlib.py", line 717, in _read_lzma2
return self._read_from_decompressor(coder, dec, input, level, num_coders, with_cache=True)
File "E:\Python\py7zlib.py", line 688, in _read_from_decompressor
data = decompressor.decompress(input)
ValueError: data error during decompression
Source
import py7zlib
import os
class SevenZFile(object):
@classmethod
def is_7zfile(cls, filepath):
'''
Class method: determine if file path points to a valid 7z archive.
'''
is7z = False
fp = None
try:
fp = open(filepath, 'rb')
archive = py7zlib.Archive7z(fp)
n = len(archive.getnames())
is7z = True
finally:
if fp:
fp.close()
return is7z
def __init__(self, filepath):
fp = open(filepath, 'rb')
self.archive = py7zlib.Archive7z(fp)
def extractall(self, path):
for name in self.archive.getnames():
outfilename = os.path.join(path, name)
outdir = os.path.dirname(outfilename)
if not os.path.exists(outdir):
os.makedirs(outdir)
outfile = open(outfilename, 'wb')
outfile.write(self.archive.getmember(name).read())
outfile.close()
if SevenZFile.is_7zfile('DP_LAN_Realtek-XP_18000.7z'):
sevenZfile = SevenZFile('DP_LAN_Realtek-XP_18000.7z')
sevenZfile.extractall('.')