__author__ = '行简'
import sys, os
import struct
class WxapkgFile(object):
nameLen = 0
name = ""
offset = 0
size = 0
def main(dir_path):
with open(dir_path, "rb") as f:
root = os.path.dirname(os.path.realpath(f.name))
name = os.path.basename(f.name) + '_dir'
if len(sys.argv) > 2:
name = sys.argv[2]
firstMark = struct.unpack('B', f.read(1))[0]
print('first header mark = {}'.format(firstMark))
info1 = struct.unpack('>L', f.read(4))[0]
print('info1 = {}'.format(info1))
indexInfoLength = struct.unpack('>L', f.read(4))[0]
print('indexInfoLength = {}'.format(indexInfoLength))
bodyInfoLength = struct.unpack('>L', f.read(4))[0]
print('bodyInfoLength = {}'.format(bodyInfoLength))
lastMark = struct.unpack('B', f.read(1))[0]
print('last header mark = {}'.format(lastMark))
if firstMark != 0xBE or lastMark != 0xED:
print('its not a wxapkg file!!!!!')
f.close()
exit()
fileCount = struct.unpack('>L', f.read(4))[0]
print('fileCount = {}'.format(fileCount))
fileList = []
for i in range(fileCount):
data = WxapkgFile()
data.nameLen = struct.unpack('>L', f.read(4))[0]
data.name = f.read(data.nameLen)
data.offset = struct.unpack('>L', f.read(4))[0]
data.size = struct.unpack('>L', f.read(4))[0]
print('readFile = {} at Offset = {}'.format(str(data.name, encoding = "utf-8"), data.offset))
fileList.append(data)
for d in fileList:
d.name = '/' + name + str(d.name, encoding = "utf-8")
path = root + os.path.dirname(d.name)
if not os.path.exists(path):
os.makedirs(path)
w = open(root + d.name, 'wb')
f.seek(d.offset)
w.write(f.read(d.size))
w.close()
print('writeFile = {}{}'.format(root, d.name))
f.close()
if __name__ == '__main__':
dir_path = r'xxxx'
main(dir_path)
