"Re: [xml] DTD - external subset - encoding"

[Kasimier Buchcik <kbuchcik 4commerce de>]

Hihi,

on 2/23/2004 8:08 PM Kasimier Buchcik wrote:

> Hi,
>
> on 2/23/2004 1:44 PM Kasimier Buchcik wrote:
>
>
> > Hi,
> >
> > I have a XML document that references an external subset. Both are 
> > encoded in UTF-16. Xmllint seems to choke on the external subset file.
> > I haven't found anything about encoding problems with external subsets 
> > in the mail archives & bug list.
> >
> >
> > C:\dev\libxml2\lib\xml-2-6-6-xslt-1-1-2>xmllint parament_test.xml 
> > --valid --noent
> > parament_test.dtd:1: parser error : internal error
> > ?<
> > ^
> > parament_test.dtd:1: parser error : DOCTYPE improperly terminated
> > ?<
> > ^
> > parament_test.dtd:1: parser error : Input is not proper UTF-8, indicate 
> > encoding !
> > ?<
> > ^
> > parament_test.dtd:1: error: Bytes: 0xFF 0xFE 0x3C 0x00
> > ?<
> > ^
> > parament_test.dtd:1: parser error : Start tag expected, '<' not found
> > ?<
> >  ^
> >
> > C:\dev\libxml2\lib\xml-2-6-6-xslt-1-1-2>xmllint --version
> > xmllint: using libxml version 20606
> >    compiled with: DTDValid FTP HTTP HTML C14N Catalog XPath XPointer 
> > XInclude Iconv Unicode Regexps Automata Schemas
> >
> > I'm working on a w2k machine.
> > I have attached the test used.
>
>
> After some debugging I stranded in "xmlParserHandlePEReference" where a 
> switch of encoding could be done; but the test fails, since "entity-> 
> length" seems to be zero. I also have expected the "input" to be tested 
> for length >= 4 and not the "entity" - but this one is zero as well. 
> Since I don't know what length to use or how to fix this, I'm just able 
> to point this out:
>
>
> parser.c (xmlParserHandlePEReference)
>
> /*
>                    * Get the 4 first bytes and decode the charset
>                    * if enc != XML_CHAR_ENCODING_NONE
>                    * plug some encoding conversion routines.
>                    */
>                   GROW
>                   if (entity->length >= 4) {   <<<----- HERE
>                       start[0] = RAW;
>                       start[1] = NXT(1);
>                       start[2] = NXT(2);
>                       start[3] = NXT(3);
>                       enc = xmlDetectCharEncoding(start, 4);
>                       if (enc != XML_CHAR_ENCODING_NONE) {
>                           xmlSwitchEncoding(ctxt, enc);
>                       }
>                   }

Maby the line should read "if ((input->end - input->cur) >= 4)"?
Actually "input->length" seems not to be computed.

Greetings,

Kasimier