RE: [xsl] How to: Returning HTML Elements From a Saxon Extension Function (6.5.x)

["Michael Kay" <mhk@xxxxxxxxx>]

Why do you need to use a byte array? A SAX InputSource is quite happy to
accept a StringReader as the input source.

Michael Kay

> -----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx 
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of 
> W. Eliot Kimber
> Sent: 18 April 2003 16:29
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: [xsl] How to: Returning HTML Elements From a 
> Saxon Extension Function (6.5.x)
> 
> 
> W. Eliot Kimber wrote:
> > W. Eliot Kimber wrote:
> 
> > My analysis is correct--turns out one of my collegues had already
> > figured this out and I didn't know it. What I had missed 
> was the the 
> > "Parse()" method on the Saxon DocumentBuilderImpl class, 
> which allows 
> > you to pass in a string to be parsed more or less directly. 
> Here's the 
> > basic pattern:
> > 
> > public NodeInfo generateResultTree(String markup) {
> >   java.io.ByteArrayInputStream bais = new
> >                       ByteArrayInputStream(markup.getBytes());
> >   org.xml.sax.InputSource isource = null;
> >   try {
> >      isource = new InputSource(bais);
> >   } catch (org.xml.sax.SAXException e) {
> >      e.printStackTrace();
> >   }
> >   org.w3c.dom.Document root = new
> >             com.icl.saxon.om.DocumentBuilderImpl().parse(isource);
> >   return (NodeInfo)(root.getDocumentElement());
> > }
> 
> I discovered it's not quite so simple because the byte array you get 
> from String.getBytes() is a UTF-16 byte sequence, but Aelfred (which 
> Saxon uses in it's DocumentBuilderImpl) only handles UTF-8, 
> so you have 
> to convert the Java UTF-16 string to a UTF-8 byte array, which I did 
> like so:
> 
> public NodeInfo generateMarkup(String markupString) {
>    ByteArrayOutputStream baos = new ByteArrayOutputStream();
> 
>    OutputStreamWriter osw = null;
>    // NOTE: the following exceptions should never happen,
>    //       so there's no point in trapping them.
>    try {
>      osw = new OutputStreamWriter(baos, "UTF-8");
>    } catch (UnsupportedEncodingException e2) {
>      e2.printStackTrace();
>    }
>    try {
>      osw.write(markupString);
>    } catch (IOException e3) {
>      e3.printStackTrace();
>    }
>    try {
>      osw.flush();
>      osw.close();
>    } catch (IOException e4) {
>      e4.printStackTrace();
>    }
>    ByteArrayInputStream bais = new
>          ByteArrayInputStream(baos.toByteArray());
>    InputSource isource = new InputSource(bais);
>    Document root = null;
>    try {
>      root = new DocumentBuilderImpl().parse(isource);
>    } catch (SAXException e1) {
>      e1.printStackTrace();
>    }
>    return (NodeInfo)(root.getDocumentElement());
> }
> 
> 
> 
> -- 
> W. Eliot Kimber, eliot@xxxxxxxxxx
> Consultant, ISOGEN International
> 
> 1016 La Posada Dr., Suite 240
> Austin, TX  78752 Phone: 512.656.4139
> 
> 
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
> 


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list