Unit test to render a LaTeX math equation in XSL-FO using XQuery.

latex-equation-in-fop.xq

xquery version "1.0";

(: Unit test to check equation rendering in XSL-FO with LaTeX extension. 
   To pass the test the rendered PDF file must have the equation in it.
   Make sure you have the following two jar files in your $EXIST_HOME/lib/extensions:
   
   jlatexmath-1.0.3.jar
   jlatexmath-fop-1.0.3.jar
   
   http://forge.scilab.org/index.php/p/jlatexmath/downloads/694/
   
   http://forge.scilab.org/index.php/p/jlatexmath/downloads/get/jlatexmath-1.0.3.jar   
   http://forge.scilab.org/index.php/p/jlatexmath/downloads/get/jlatexmath-fop-1.0.3.jar
   

:)

declare namespace fo="http://www.w3.org/1999/XSL/Format";
declare namespace xslfo="http://exist-db.org/xquery/xslfo";
 
let $fop-config :=
<fop version="1.0">
   <renderers>
        <renderer mime="application/pdf">
            <filterList>
                <value>flate</value>
            </filterList>
            <fonts>
                <auto-detect/>
            </fonts>
        </renderer>
    </renderers>
</fop>

let $fo-file :=
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
    <fo:layout-master-set>
        <fo:simple-page-master master-name="my-page">
            <fo:region-body margin="1in"/>
        </fo:simple-page-master>
    </fo:layout-master-set>
    <fo:page-sequence master-reference="my-page">
        <fo:flow flow-name="xsl-region-body">
            <fo:block>
                <fo:block>Test#1: To pass the test you should see an equation 
                (E = mc squared over the root of 1 minus v squared over c squared) below:</fo:block>  
                <fo:block>
                    <fo:instream-foreign-object>
                        <latex xmlns="http://forge.scilab.org/p/jlatexmath"><![CDATA[
                        E = \frac{mc^2}{\sqrt{1-\frac{v^2}{c^2}}}
                        ]]></latex>
                   </fo:instream-foreign-object>
                </fo:block>
            </fo:block>
        </fo:flow>
    </fo:page-sequence>
</fo:root>

let $pdf := xslfo:render($fo-file, "application/pdf", (), $fop-config)
return response:stream-binary($pdf, "application/pdf", "output.pdf")