gfw encode and decode

README.md

• 解码gfwlist.txt文件
• 编码pac规则为gfwlist格式

main.py -l inFile outFile
main.py -b inFile outFile

main.py

#!/usr/local/bin/python3
import re, base64, sys, os

def outList(fileUrl, outUrl):
  inFile = open(fileUrl, 'r')
  content = base64.b64decode(inFile.read().encode()).decode()
  inFile.close()
  outFile = open(outUrl, 'w')
  outFile.write(content)
  outFile.close()

def listToGFWList(fileUrl, outUrl):
  inFile = open(fileUrl, 'r')
  content = base64.b64encode(inFile.read().encode()).decode()
  inFile.close()
  outFile = open(outUrl, 'w')

  # 每行长度64
  partten = re.compile(r'.{64}')
  lines = partten.findall(content)

  for line in lines:
    outFile.write(line + '\n')
  # 剩下最后一行不足64长度
  index = len(lines) * 64
  outFile.write(content[index:] + '\n')
  outFile.close()

def argvCheck():
  if len(sys.argv) != 4:
    print('Error: params incorrect.')
    return False
  return True

if len(sys.argv) >= 1:
  if sys.argv[1] in ('-l', 'list'):
    if argvCheck():
      outList(sys.argv[2], sys.argv[3])
  elif sys.argv[1] in ('-b', 'build'):
    if argvCheck():
      listToGFWList(sys.argv[2], sys.argv[3])
else:
  print('''\
  Usage: %s [-l list]
         %s [-b build]\
  ''' % ((os.path.basename(sys.argv[0]), ) * 2))