I am currently working on fixing some of these bugs. Stay tuned...
Myriam
Stephane
Bailliez To: [EMAIL PROTECTED]
<sbailliez@imedi cc: (bcc: Myriam Midy/CAM/Lotus)
ation.com> Subject: RE: Systemid syntax for files.
08/09/01 08:52
AM
Please respond
to xalan-dev
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> ---- you "Stephane Bailliez" <[EMAIL PROTECTED]> wrote ----
> > Now the final question: what is the systemid syntax for files ? :-)
>
> Ah-ha! I was just looking into that yesterday. I think I've come to a
> 'good enough' conclusion although I'm still not quite happy
> with it. (Of
> course the difference what the specs say and what common
> programs actually
> implement is also a point to remember...)
Yes..unfortunately this is just like HTTP. We have to deal with unclear
specs that gave birth to various possible interpretations...
> ---- Xalan note:
> I'm sure there are a couple of places where Xalan code does not handle
> relative URL's correctly. Help us find them and I'll
> definitely work on
> fixing them. I have a basic SystemIDTest already although I
> both need to
> update it a bit and also create another SpecialSystemIdTest
> that covers
> other non-file: URLs (which require special network setup
> obviously, so I
> may exclude it from the smoketest, etc.)
Since there is a good deal of place that are concerned...I think it would
be
much better to create first a URI related class that can factorize this
crazy set of systemid magic and put the logic right here. We have now to
deal with a great deal of malformed systemid that follow us for years. :-(
All I can think of is some sort of:
class MalformedSystemId extends IOException
class URIUtils {
// transform a file into a valid systemid
static String getSystemId(File file);
// do a strict validation of the systemid !
void validate(String systemid) throws MalformedSystemId;
// send back a valid systemid uri modified if necessary
// to deal with various syntax errors.
static String normalize(String weirdsystemid) throws MalformedSystemId;
// transform a systemid into a file object if possible
static File toFile(String weirdsystemid) throws MalformedSystemId;
//...
}
> Oh: side note: the java.net.URL class is notoriously bad at
> manipulating
> URL formats, so don't count on it to tell you what the spec says.
Yep. This is crap. :-(
I think a real URI class would be a nice addition to Jakarta-Commons if not
already in the pipe.
--
St�phane Bailliez
Software Engineer, Paris - France
iMediation - http://www.imediation.com
Disclaimer: All the opinions expressed above are mine and not those from
my
company.
