Can't use relative path to fonts metrics file in userconfig.xml (even while using fontBaseDir, baseDir and baseURL parameter)

[s-...@artefrance.fr]

Hello,

I can't use relative path to my fonts file (xml + ttf). Even if I use the 
fontBaseDir property in the Configuration fop's object.

I need to do that because my app will be deployed on different platform 
using a single JAR file which contains all the needed fonts stuff (there 
is not shared server which can "host" the fonts at a single place).


Here is the way i want to access my fonts :

File userConfigFile = new 
File(PDFRenderer.class.getResource("/ressources/fop-config/userconfig.xml").getFile());
org.apache.fop.configuration.Configuration.put("fontBaseDir","ressources/fop-fonts/");

Then in my userconfig.xml file :

<font metrics-file="helvetica-narrow.xml" kerning="yes" 
embed-file="Type1Fonts/HVB_____.PFB">
        <font-triplet name="Helvetica" style="normal" weight="bold"/>
</font>

Everything is working ok when my application isn't embedded in a JAR 
file... 

But once I launch it within a JAR (and a manifest file, which is the 
classical way for deploying java application here), it seems FOP have a 
problem to localise my custom fonts file in a relative way ! Here is the 
console output :

[ERROR] Failed to read a font metrics file: Invalid font metrics file: 
helvetica-narrow.xml (no protocol: helvetica-narrow.xml)

How can I use the class loader to load my custom fonts (this way I already 
can load images, config files and other resources directly embedded in my 
"final" jar file) ?

Sorry if this problem was already solved, I didn't find it in the 
archives. 

Waiting for answers, I will look the source code to see how FOP loads 
custom fonts... :o)

Help please ! ^^

Symon