先说一下代码的思想，首先将“字符串”进行替换，替换成 uuid ，并且把字符串的内容存起来。_map是作为字典，uuid作为key，字符串内容作为value。

然后再把// 和 /**/ 进行替换

后输出到文件中

import re

import uuid

fdr = open("input.c", 'r')

fdw = open("output.c", 'w')

_map = { }

outstring = ''

line = fdr.readline()

while line:

while True:

#这里要注意，我用的是re.S 比如print("aaa\n")

m = re.compile('\".*\"', re.S)

_str = m.search( line )

#如果没匹配成功，就合并，然后下一行

if None == _str:

outstring += line

break

key = str( uuid.uuid1() )

#

m = re.compile('\".*\"', re.S)

outtmp = re.sub(m, key, line, 1)

line = outtmp

_map[ key ] = _str.group(0)

line = fdr.readline()

m = re.compile(r'//.*')

outtmp = re.sub(m, ' ', outstring)

outstring = outtmp

m = re.compile(r'/\*.*?\*/', re.S)

outtmp = re.sub(m, ' ', outstring)

outstring = outtmp

for key in _map.keys():

outstring = outstring.replace(key, _map[key])

fdw.write(outstring)

fdw.close()