Method: What.where

Defined in:
lib/what.rb

.where(program) ⇒ Object 



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# File 'lib/what.rb', line 57

def What.where(program)
  if search_path = ENV["PATH"]
    paths = search_path.split(File::PATH_SEPARATOR)
    paths.each do |path|
      path.tr!('\\','/')
      candidate = File.join(path, program)
      return candidate if File.executable?(candidate)
      if pathext = ENV["PATHEXT"]
        pathexts = pathext.split(File::PATH_SEPARATOR)
        pathexts.each do |ext|
          candidate = File.join(path, program + ext)
          return candidate if File.executable?(candidate)
        end
      end
    end
  end
  nil
end