Module: Warbler::PlatformHelper

Included in:
Jar
Defined in:
lib/warbler/platform_helper.rb

Instance Method Summary collapse

Instance Method Details

#which(cmd) ⇒ Object

Cross-platform way of finding an executable in the $PATH. Thanks to @mislav

which('ruby') #=> /usr/bin/ruby



14
15
16
17
18
19
20
21
22
23
 
# File 'lib/warbler/platform_helper.rb', line 14

def which(cmd)
  exts = ENV['PATHEXT'] ? ENV['PATHEXT'].split(';') : ['']
  ENV['PATH'].split(File::PATH_SEPARATOR).each do |path|
    exts.each { |ext|
      exe = File.join(path, "#{cmd}#{ext}")
      return exe if File.executable? exe
    }
  end
  return nil
end