Class: File

Inherits:
Object
  • Object
show all
Defined in:
lib/upm/core_ext.rb

Class Method Summary collapse

Class Method Details

.which(*bins) ⇒ Object

Overly clever which(), which returns an array if more than one argument was supplied, or string/nil if only one argument was supplied.



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# File 'lib/upm/core_ext.rb', line 13

def self.which(*bins)
  results = []
  bins    = bins.flatten
  paths   = ENV["PATH"].split(":").map { |path| File.realpath(path) rescue nil }.compact.uniq

  paths.each do |dir|
    bins.each do |bin|

      full_path = File.join(dir, bin)
      
      if File.exists?(full_path)
        if bins.size == 1
          return full_path
        else 
          results << full_path 
        end
      end

    end
  end

  bins.size == 1 ? nil : results
end

.which_is_best?(*bins) ⇒ Boolean 



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# File 'lib/upm/core_ext.rb', line 37

def self.which_is_best?(*bins)
  result = which(*bins.flatten)
  result.is_a?(Array) ? result.first : result
end