Forrest howto


The documentation (the websites) for both and Giellatekno is served to the public via forrest, and is renewed very often. When you are offline you can read this documentation if you install forrest on your own machine.

In this document we assume that your username is niillas, that you checkout svn trunk and place forrest into the map /Users/niillas/Documents. /Users/niillas/Documents is also referred to as $HOME/Documents throughout this document.

Fetching and compiling forrest on unix systems

  • Open a terminal. Write cd Documents and press enter.
  • Then write svn co forrest. Answer positively to all questions asked.
  • Then write cd forrest/main followed by ./

Fetching and compiling forrest on Windows systems

To be honest, the rest of this page is mostly Unix-relevant. Feel free to add any Windows-relevant documentation if you have some.

Setting up environment variables

Open the file ~/.profile (or ~/.bash_profile or similar) using this command in the terminal

open -a subethaedit ~/.profile

Write the following into that file:

export FORREST_HOME=$HOME/Documents/forrest

Close all terminals. Next time you open a terminal the changes will be working. Or, if you hate closing terminals to make these kind of changes write this command in your terminal(s):

. $HOME/.bash_profile

Installing the documentation

Follow the instructions on svn checkout to get our documentation.

To keep your documentation up to date, you will have to do a svn up regularly in the directory were you have checked out our repository.

Setting up fonts for pdf versions the documentations

First, fetch the DejaVu-fonts and install them on your computer.

Open the file $FORREST_HOME/plugins/org.apache.forrest.plugin.output.pdf/output.xmap for editing. The line that reads:


has to be changed so that forrest will find the config.xml file. Assuming that svn has been checked out to $HOME/Documents and that your username is niillas, the correct replacement will be:


Save and close the file.

The next step is to edit the file $HOME/Documents/trunk/xtdoc/sd/src/documentation/resources/fonts/config.xml. All instances of /Users/sd/trunk/xtdoc/sd/src/documentation/resources/fonts/ with /Users/niillas/Documents/trunk/xtdoc/sd/src/documentation/resources/fonts/. When this is done, save and close the file.

Reading the documentation

Now that everything is in place, you will have to start up forrest. Open a terminal, and issue this command:

cd $HOME/Documents/trunk/xtdoc/sd; forrest run

Forrest outputs a lot of messages, and the last stanza before it goes live begins with:


and ends with a line that goes something like this:

10:02:27.301 EVENT Started org.mortbay.jetty.Server@290fbc

where the important part is org.mortbay.jetty (what's before that is the time, and what's behind varies from machine to machine).

Open a web browser, and go to the address http://localhost:8888

Running Forrest on a different port

If you want to run two different instances of Forrest (e.g. both the xtdoc/sd/ and xtdoc/gtuit/ at the same time, or there is already another one running Forrest on e.g. gtlab, and you want to run your own instance), you have to specify a different port for Forrest to listen to. You do that by adding an argument to the forrest run command as shown below:

forrest run -Dforrest.jvmargs="-Djetty.port=8889"

More help and hints can be found at Forrest's FAQ page.

Forrest, jspwiki and UTF-8

When running Forrest in MacOS X, the Java VM takes an 8-bit encoding as its default file encoding. This breaks the parsing of the JSPWiki pages, since the parser grammar is using the Java default (and thus OS default) encoding to interpret the jspwiki files. To specify another default encoding for Java, give Forrest the following startup argument:

forrest run -Dforrest.jvmargs="-Dfile.encoding=utf-8"

To run forrest on a different port with correct handling of utf-8 encoded jspwiki files, use the following command:

forrest run -Dforrest.jvmargs="-Dfile.encoding=utf-8 -Djetty.port=8889"

For some notes on the lack of a global setting for things like this (e.g. a global setting of Java file encoding), see this reply from Apple's e-mail list for Java developers.

Updating Forrest from svn

If you would like to update Forrest from svn, then you can issue these commands:

svn up
cd main
./ clean

Last modified: $Date: 2017-09-04 14:33:56 +0200 (Mon, 04 Sep 2017) $, by $Author: sjur $

by Børre Gaup