basconv.py

python改写的<<C语言百例>>! 很经典的程序开发例子!

#!/usr/bin/env python
#'basconv.py'
#07-06-15
import base64
import os.path
import sys

def confile(fin, fout, decode=False):
	f_in = open(fin, 'rb')
	f_out = open(fout, 'wb')
	if decode:
		base64.decode(f_in, f_out)
	else:
		base64.encode(f_in, f_out)
	f_in.close()
	f_out.close()

if __name__ == '__main__':
	if len(sys.argv) != 4 or sys.argv[1] not in ('en', 'de'):
		print 'Usage: %s <en|de> <in file> <out file>' \
			% os.path.basename(sys.argv[0])
		sys.exit(2)
	try:
		confile(sys.argv[2], sys.argv[3], sys.argv[1] == 'de')
		print 'Done.'
	except IOError, (errno, errstr):
		print 'Error:', errstr