_urllib2_fork.py 文件源码

def open_local_file(self, req):
        try:
            import email.utils as emailutils
        except ImportError:
            # python 2.4
            import email.Utils as emailutils
        import mimetypes
        host = req.get_host()
        file = req.get_selector()
        localfile = url2pathname(file)
        try:
            stats = os.stat(localfile)
            size = stats.st_size
            modified = emailutils.formatdate(stats.st_mtime, usegmt=True)
            mtype = mimetypes.guess_type(file)[0]
            headers = mimetools.Message(StringIO(
                'Content-type: %s\nContent-length: %d\nLast-modified: %s\n' %
                (mtype or 'text/plain', size, modified)))
            if host:
                host, port = splitport(host)
            if not host or \
                (not port and socket.gethostbyname(host) in self.get_names()):
                return addinfourl(open(localfile, 'rb'),
                                  headers, 'file:'+file)
        except OSError, msg:
            # urllib2 users shouldn't expect OSErrors coming from urlopen()
            raise URLError(msg)
        raise URLError('file not on local host')