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HOWTO validate the HTML/XML code generated by tex4ht
----------------------------------------------------
Eitan Gurari (the upstream author) strongly recommends
the validation of the generated HTML/XML. The command line switch
"-cvalidate" can be used to do this after making suitable changes as
outlined below.
One possibility is to install the Debian packages ""libxml2-utils"
and/or "w3c-markup-validator". The latter package will pull-in all
the Document Type Definition (DTD) files that are required in order
to perform validation in most cases. The program "xmllint" in
"libxml2-utils" performs xml and html validation. The other method for
html validation is via a cgi-bin in the "w3c-markup-validator"
package. There is a hint about how this can be run from the command line
in "/usr/share/doc/w3c-markup-validator/README.Debian".
Eitan Gurari has also provided a java program and some instructions on
how to use it. The following instructions are taken from some
instructions originally found at his website.
If needed, a simple XML validator in Java can be installed in the
following manner.
1. The files /usr/share/tex4ht/xv4ht.java contains
the sources.
2. Compile the java program with the following command. This works
with the free-java-sdk.
javac /usr/share/tex4ht/xv4ht.java
3. In your copy of tex4ht.env replace the record
.xml myxmlparser %%1.xml
with (there should be no leading spaces)
java -classpath <directory> xv4ht <catalog file> %%1.xml
where <directory> should be name of the directory where the classes
now reside and catalog file is the name of XML catalog (usually
/etc/xml/catalog on Debian systems; a catalog file is also
provided in /usr/share/tex4ht/xv4ht.cat).
4. Download the desirable DTD'S and and have the catalog file correctly
reference their locations. If you install the debian packages
xml-core, w3-dtd-mathml, sgml-data, w3c-dtd-xhtml, docbook-xml then a
number of DTD's are installed in the locations that are entered in the
default "xmlvalidator.cat". You must find/download others which you
may want to use.
A CSS validator can also be installed in a similar way. For a CSS
validator see
http://jigsaw.w3.org/css-validator/
Kapil H. Paranjape
Mon Nov 21 07:36:50 IST 2005
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