Hi Michael, Thank you for helping. On 2012-06-06 18:27, Michael Ludwig wrote:
Lars Skjærlund schrieb am 06.06.2012 um 16:03 (+0200):We're trying to validate XHTML documents using the following syntax: xmllint --noout --dtdvalid /etc/xml/xhtml/xhtml1-transitional.dtd <filename> This works - kind of: If I omit the path to the DTD, xmllint complains that it cannot find the DTD.The --dtdvalid switch is meant to be used with a filename argument. If you don't need that because you're relying on the DOCTYPE of the document, then use the --valid switch. (But maybe I got you wrong.)
I _am_ using it with a filename as the argument - because I do not want to rely on the DOCTYPE.
xmllint does not, however, load the external references in the standard DTD: For the standard W3C, you have three external files defining various entities such as .What is the "standard DTD" and which files or URLs does xmllint fail to load? If by "standard W3C DTDs" you mean the ones from the W3C servers: That won't work, they're usually blocked.
I'm sorry I didn't make myself clear enough: Yes, I mean the DTDs from the W3C servers - and yes, I know they're usually blocked - and yes, that's why I have installed the same files locally in the catalog at /etc/xml. And that's why I'm pulling in the local file using --dtdvalid.
The DTD for XHTML Transitional is usually called "xhtml1-transitional.dtd" as in the example above. About the first thing in this file, however, is commands to pull in three more files:
<!-- Extensible HTML version 1.0 Transitional DTD This is the same as HTML 4 Transitional except for changes due to the differences between XML and SGML. Namespace = http://www.w3.org/1999/xhtml For further information, see: http://www.w3.org/TR/xhtml1 Copyright (c) 1998-2002 W3C (MIT, INRIA, Keio), All Rights Reserved. This DTD module is identified by the PUBLIC and SYSTEM identifiers: PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" SYSTEM "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"; $Revision: 1.27 $ $Date: 2002/08/01 18:16:48 $ --><!--================ Character mnemonic entities =========================-->
<!ENTITY % HTMLlat1 PUBLIC "-//W3C//ENTITIES Latin 1 for XHTML//EN" "xhtml-lat1.ent"> %HTMLlat1; <!ENTITY % HTMLsymbol PUBLIC "-//W3C//ENTITIES Symbols for XHTML//EN" "xhtml-symbol.ent"> %HTMLsymbol; <!ENTITY % HTMLspecial PUBLIC "-//W3C//ENTITIES Special for XHTML//EN" "xhtml-special.ent"> %HTMLspecial;My problem is that xmllint _does_ load the primary file, but it does not pull in the three files mentioned here - even though the files are present on disk and correctly configured in the catalog file:
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN"
"http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd";> <!-- Comment the DTD declaration to avoid looking for it on the web. Alternatively we can place a copy of the DTD locally and refer to it. --> <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"><public publicId="-//W3C//DTD XHTML 1.0 Transitional//EN" uri="xhtml/xhtml1-transitional.dtd"/> <public publicId="-//W3C//DTD XHTML 1.0 Strict//EN" uri="xhtml/xhtml1-strict.dtd"/> <public publicId="-//W3C//DTD XHTML 1.0 Frameset//EN" uri="xhtml/xhtml1-frameset.dtd"/> <public publicId="-//W3C//ENTITIES Latin 1 for XHTML//EN" uri="xhtml/xhtml-lat1.ent"/> <public publicId="-//W3C//ENTITIES Symbols for XHTML//EN" uri="xhtml/xhtml-symbol.ent"/> <public publicId="-//W3C//ENTITIES Special for XHTML//EN" uri="xhtml/xhtml-special.ent"/>
<system systemId="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"; uri="xhtml/xhtml1-transitional.dtd"/> <system systemId="http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"; uri="xhtml/xhtml1-strict.dtd"/> <system systemId="http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd"; uri="xhtml/xhtml1-frameset.dtd"/> <system systemId="http://www.w3.org/TR/xhtml1/DTD/xhtml-lat1.ent"; uri="xhtml/xhtml-lat1.ent"/> <system systemId="http://www.w3.org/TR/xhtml1/DTD/xhtml-symbol.ent"; uri="xhtml/xhtml-symbol.ent"/> <system systemId="http://www.w3.org/TR/xhtml1/DTD/xhtml-special.ent"; uri="xhtml/xhtml-special.ent"/>
</catalog>I've tested the catalog file and it works in other circumstances - like when I have a proper DOCTYPE declaration. There's also an environment variable that points to the catalog.
As a result, xmllint complains that the entities defined in the three files are invalid - which they have to be, of course, if it doesn't read the definitions.
Regards, Lars -- Lars Skjærlund Skovengen 111 2980 Kokkedal Denmark Tlf.: +45 45 16 14 33 http://www.skjaerlund.dk/lars
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