generic.py 文件源码

def writeToStream(self, stream, encryption_key):
        # Try to write the string out as a PDFDocEncoding encoded string.  It's
        # nicer to look at in the PDF file.  Sadly, we take a performance hit
        # here for trying...
        try:
            bytearr = encode_pdfdocencoding(self)
        except UnicodeEncodeError:
            bytearr = codecs.BOM_UTF16_BE + self.encode("utf-16be")
        if encryption_key:
            bytearr = RC4_encrypt(encryption_key, bytearr)
            obj = ByteStringObject(bytearr)
            obj.writeToStream(stream, None)
        else:
            stream.write(b_("("))
            for c in bytearr:
                if not chr_(c).isalnum() and c != b_(' '):
                    stream.write(b_("\\%03o" % ord_(c)))
                else:
                    stream.write(b_(chr_(c)))
            stream.write(b_(")"))