#3 psgml does not understand file: syntax

[Anonymous]

Hi,

I'm trying to use PSGML together with java applications
which
use the JAXP parser. One prominent application is the
"ant"
build tool from the jakarta project.

If I write my DOCTYPEs like this:

<!DOCTYPE project SYSTEM "conf/project.dtd">

then emacs (I use emacs 20.7.1 as distributed by RedHat
with
their 6.2 distribution) happily parses all the DTDs and
their
entities (C-c C-p ==> no errors).

But ant (and the JAXP 1.0.1 / JAXP 1.1) parser choke on
these
lines as they expect the DOCTYPEs be written like this:

<!DOCTYPE project SYSTEM "file:conf/project.dtd">

If I put a "file:" in front of all external references,
then JAXP
and ant are happy. But PSGML is no longer.

I'm in some sort of Catch-22. What can I do? Is it
possible to
teach the file: syntax to emacs?

[Nobody/Anonymous]

Logged In: NO

I have the same problem. I want psgml to read the DTD from
a webserver though for team development DTD sharing. If
someone can point me in the right direction I'd like to try
to support http: and file: URLs.

[Frederik Fouvry]

Logged In: YES
user_id=552189

(Based on a reaction from Lennart in a mailing list:)

(defun sgml-url-sysid (sysid)
(cond ((string-match "^file:" sysid)
(insert-file-contents (substring sysid (match-end 0)))
t)
(t nil)))

(add-hook 'sgml-sysid-resolve-functions 'sgml-url-sysid)

This does it nicely. Note however that there is a potential
problem
(and also one that makes it harder to generalise this
function):
double slashes are Emacs-normalised before they get to this
hook,
ie everything before the slashes is thrown away:
/home/sgml/x.dtd -> /home/sgml/x.dtd
file:/home/sgml/x.dtd -> /home/sgml/x.dtd :-)
file://home/sgml/x.dtd -> /home/sgml/x.dtd :-) but also :-|
because ...
http://www.dot.org/x.dtd -> /www.dot.org/x.dtd :-(