multipartpost.py 文件源码

def multipart_encode(vars, files, boundary = None, buf = None):
        if boundary is None:
            boundary = mimetools.choose_boundary()

        if buf is None:
            buf = ''

        for (key, value) in vars:
            if key is not None and value is not None:
                buf += '--%s\r\n' % boundary
                buf += 'Content-Disposition: form-data; name="%s"' % key
                buf += '\r\n\r\n' + value + '\r\n'

        for (key, fd) in files:
            file_size = os.fstat(fd.fileno())[stat.ST_SIZE] if isinstance(fd, file) else fd.len
            filename = fd.name.split('/')[-1] if '/' in fd.name else fd.name.split('\\')[-1]
            try:
                contenttype = mimetypes.guess_type(filename)[0] or 'application/octet-stream'
            except:
                # Reference: http://bugs.python.org/issue9291
                contenttype = 'application/octet-stream'
            buf += '--%s\r\n' % boundary
            buf += 'Content-Disposition: form-data; name="%s"; filename="%s"\r\n' % (key, filename)
            buf += 'Content-Type: %s\r\n' % contenttype
            # buf += 'Content-Length: %s\r\n' % file_size
            fd.seek(0)

            buf = str(buf)
            buf += '\r\n%s\r\n' % fd.read()

        buf += '--%s--\r\n\r\n' % boundary

        return boundary, buf