binhex[GhostFromHeavn]

# -*- coding: utf-8 -*- #@File name : binhex.py #@Auther : GhostFromHeaven[csdn] #@date : 2012-07-19 import struct from filehelper import * def binhex(inp, out, extfun=lambda x: x, blocksize=256): """ Convert a binary file 'inp' to binhex file output. The inp may be a filename or a file-like object supporting read() and close() methods. The output parameter can either be a filename or a file-like object supporting a write() and close() method. """ def _binhex(fin, fout): filesize = 0 while True: chunk = fin.read(blocksize) if chunk: redlen = len(chunk) for b in chunk: fout.write('%02X ' % extfun(ord(b))) fout.write('\n') filesize += redlen else: break return filesize return fileinoutpattern(inp, out, _binhex, inmode="rb", outmode="w") def hexbin(inp, out, extfun=slambda x: x): """ Decode a binhex file inp to binary file outpu. The inp may be a filename or a file-like object supporting read() and close() methods. The output parameter can either be a filename or a file-like object supporting a write() and close() method. """ def _hexbin(fin, fout): for line in fin: for i in range(len(line)/3): x = int(line[3*i:3*(i+1)], 16) fout.write(struct.pack('B', extfun(x))) fileinoutpattern(inp, out, _hexbin, inmode="r", outmode="wb") #self testing def test(): """ Test case. """ # binhex test zipfilename = r"D:\2.zip" binhex(zipfilename, r"D:\2.1.txt") with open(zipfilename, "rb") as fin: binhex(fin, r"D:\2.2.txt") with open(r"D:\2.3.txt", "w") as fout: binhex(zipfilename, fout) with open(zipfilename, "rb") as fin, open(r"D:\2.4.txt", "w") as fout: binhex(fin, fout) # hexbin test txtfile = r"D:\2.1.txt" hexbin(txtfile, r"D:\2.1.zip") with open(txtfile, "r") as fin: hexbin(fin, r"D:\2.2.zip") with open(r"D:\2.3.zip", "wb") as fout: hexbin(txtfile, fout) with open(txtfile, "r") as fin, open(r"D:\2.4.zip", "wb") as fout: hexbin(fin, fout) def XOR(x): def _XOR(y): return x ^ y return _XOR xor0x13 = XOR(0x13) binhex(zipfilename, r"D:\2.encode.txt", extfun=xor0x13) hexbin(r"D:\2.encode.txt", r"D:\2.5.zip", extfun=xor0x13) print "OK." if __name__ == "__main__": test()