While testing the AntBuilder stuff, I found that ENV['RUBY_HOME'] is nil in
jruby but works in cruby. (There is only one environment variable that works in
jruby which is HOME because of a specific bit of code.)
I had a go at fixing this initially using System.getenv() which returned a
hashmap of all the envonment variables. This was great until I realized it was a
Java5 feature.
Having googled around a bit, I see that everyone has the same problem and that
pre java5 you need to drop out to the OS with
Runtime.getRuntime().exec("env"|"set") and parse the output.
So I am happy to give this Runtime.exec("env"|"set") technique a go, if one of
you core jruby guys thinks its the right direction to go in.
___________Is_the_right_direction___________? If not, I'll just drop it.
If it is the right direction to go in, then I see a couple of basic ways to
implement:
(a) from scratch, copy and or get inspiration from what look like many "public
domain" Runtime.exec solutions such as
http://www.rgagnon.com/javadetails/java-0150.html
(b) Put ant.jar on the jruby classpath and call org.apache....Execute
getProcEnvironment() (which is a comprehensive Runtime..exec solution too).
(c) Get inspiration from org.apache...Execute. (Presumably can't be copied to
jruby because of ASL2 license? Sigh...
Aside number 1:
I can see that there is potential conflict/confusion between the
linux:env/windows:set namespace and the java System.getProperty() namespace.
Maybe the two namespaces can simply be combined in the ruby ENV hash? Maybe a
seperate jrurby specific global is required for the java System.getProperty()
namespace: ENV_JAVA or ENV_JRUBY or something.
Aside number 2:
I wasn't intending to do anything about either of these comments in the code
related to the ENV global :
// TODO: ENV Not really a RubyHash (but close)
// TODO: ENV Should not copy system props, but should reference them instead
This seems like a seperate issue.
And finally, sorry if this an annoying low priority distraction from the hard
core stuff going on at the moment.
Cheers all
Tim
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