Python 格式化css文件，,import strin

Python 格式化css文件，,import strin

import string, sysimport re, StringIOTAB=4def format(ss):    f = open (ss, "r")    data = f.read()    f.close()    dlen = len(data)    i = 0    buf = StringIO.StringIO()    start = 0    while i < dlen:        if data[i] == '{':            buf.write(data[start:i] + ' { ')            i = i + 1            start = i        elif data[i] == '}':            last = string.strip(data[start:i])            if last:                buf.write(' '*TAB + last + ';')            buf.write(' } ')            i = i + 1            start = i        elif data[i] == ';':            line = string.strip(data[start:i])            buf.write(' '*TAB + line + '; ')            i = i + 1            start = i        else:            i = i + 1    buf.write(data[start:i+1])    return buf.getvalue()if __name__ == '__main__':    if len(sys.argv) == 1:        print 'usage: cssformat.py filename'        sys.exit()    ret = format(sys.argv[1])    print ret#该片段来自于http://byrx.net