From: Charles Oliver Nutter <headius@...>
Date: 2010-05-26T04:56:50+09:00
Subject: Re: Ruby one-file launcher that sets up environment?

On Sun, May 23, 2010 at 5:18 PM, Michal Suchanek <hramrach@centrum.cz> wrote:
> Well, actually it does not.
>
> If I wanted to distribute the script in multiple files then
> distributing it with a launcher would be just fine and would not
> require the user of the script to have administrative privileges to
> install the script in a system directory nor the additional knowledge
> how to make it effective without restarting his session.
>
> However, I was aiming for one self-contained example which is easy to
> distribute so I wanted one file.

You can generally get by using the runtime CLASSPATH in JRuby:

require 'java'

$CLASSPATH << 'somefile.jar'

This doesn't always work, since it's using a child classloader in
JRuby to handle all the classpath entries, but it often works well
enough for a simple self-contained app.

Alternatively you can just throw everything in the same jar if there
aren't file conflicts...

- Charlie