python正则表达式提取中文字符串（转）

因为想留作以后研究python中文编码用，貌似不完整，以后如果研究透彻，会加以补充，转贴如下：
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要做国际化的版本，需要把中文字符串都提取出来翻译，写了这个python脚本。


#!/usr/bin/python
# -*- coding: UTF-8 -*

'''
##
# @file match-chinese.py
# @brief 利用正则表达式提取中文字符串
# @author Jesse
# @version 1.0
# @date 2009-11-20
'''

import os,string
import re

directory = "."
output = "chinese.txt"

def match_chinese(s, f, i):
    global fd_output
    r = re.compile('\"[^\"]*[\x80-\xff]{3}[^\"]*\"')
    s_match = r.findall(s)
    for c in s_match:
        str = "%s ( %d ): %s\n" % (f, i, c)
        fd_output.write(str)

def istextfile(filename, blocksize = 512):
    return istext(open(filename).read(blocksize))

def istext(s):
    if "\0" in s:
        return 0
    
    if not s:
        return 1

    text_characters = "".join(map(chr, range(32, 127)) + list("\n\r\t\b"))
    _null_trans = string.maketrans("", "")
    t = s.translate(_null_trans, text_characters)

    if len(t)/len(s) > 0.30:
        return 0
    return 1
    
def read_file(f):
    if not istextfile(f):
        print "%s is NOT a text file" % (f)
        return
    #if not re.match(r".*\.[c|h]$", f):
    # return

    i = 0
    fd = open(f,'r')
    buff = fd.readlines()
    for line in buff:
        i +　1　2