Platform dependant Rakefile

Question

I'm writing a Rakefile that, at some point, starts Jetty. The Rakefile should be platform independant so I can use it in my windows and my mac. To start jetty there are two scripts provided: jetty.sh and jetty-cygwin.sh depending on the system you are on.

In a bash script I know that there is a OSTYPE that I can use to determine if i'm under win or under mac but it is unavailable under ENV in ruby. Is there any way of doing something similar in a Rakefile?

Thanks a lot in advance

Answer 1

Did you try ENV['OS']? With Windows I get "Windows_NT" - sorry I can't test it for Mac.

There is also the constant RUBY_PLATFORM ( I get "i386-mingw32") - perhaps you can use that.

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Another idea, if the constants don't work:

The command ver is defined in windows and returns the windows version. What happens when you call it on the Mac? You could try something like:

case %x{ver}
  when /Microsoft Windows/
    puts "I'm running Windows"
  when /Mac/
    puts "I'm running on a Mac"
  else
    puts "Unknown?"
end

Replace the /Mac/ with the result you have (even if it is an error message - if you get the error, it's not Windows ;) ).