Referencing files from other plug-ins Starting with DITA-OT 1.5.4, you can use the plugin:plugin-id URI extension and the ${dita.plugin.plugin-id.dir} Ant variable to reference the base path of another installed DITA-OT plug-in. xsl:import xmlcatalog xslt plug-insusing file in another plug-in XSLTusing another plug-in preprocessingXSLT catalogreferencing CSSHTML5 HTML5CSS

Sometimes you need to reference content in another DITA-OT plug-in. However, the path to an installed plug-in is not guaranteed to be the same between different installed instances of DITA-OT. The URI extension and Ant variable are provided so your build and XSLT files always use the correct path to the plug-in.

Within a single plug-in, you can safely use relative path references, for example, xsl/my.xsl without specifying the path to the plug-in itself.

Use in Ant build files.

Use the Ant variable anywhere in your build file or template to point to the base path of an installed DITA-OT plug-in.

The following example copies CSS files from the HTML5 plug-in:

<copy todir="${dita.temp.dir}/css"> <fileset dir="${dita.plugin.org.dita.html5.dir}/css" includes="*.css"/> </copy> Use in XSLT files.

Use the URI extension at the beginning of a file reference—usually in xsl:import—to point to the base path of an installed DITA-OT plug-in.

The following example imports the base output-message.xsl processing:

<xsl:import href="plugin:org.dita.base:xsl/common/output-message.xsl"/>

To use the URI extension, your plug-in must reference the DITA-OT catalog file. In your Ant build file, add an xmlcatalog element referencing the DITA-OT catalog file as a child of the xslt element.

 <xslt style="xsl/my.xsl" in="${dita.temp.dir}/input.file" out="${dita.temp.dir}/output.file"> <xmlcatalog refid="dita.catalog"/> </xslt>

For both of these methods, make sure you use the plug-in ID (defined in the plugin.xml file) rather than the folder name of the plug-in. In many cases, the folder name is not the same as the plug-in ID.