Module: Rubbish

Defined in:
lib/rubbish.rb

Constant Summary collapse

VERSION = 
'1.0.210921'
SHELL_VERSION = 
{bash: nil, fish: nil}

Class Method Summary collapse

Class Method Details

.method_missing(shell, *args, **kw, &block) ⇒ Object 



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# File 'lib/rubbish.rb', line 24

def self.method_missing(shell, *args, **kw, &block)
  shell=shell[0..-2].to_sym unless read=(shell[-1]!='?')
  if SHELL_VERSION.has_key?(shell) and args.length.between?(0,1)
    if minimum = SHELL_VERSION[shell]
      minimum = Gem::Version.new minimum
      if version = `#{shell} --version`.scan(/\d+\.\d+\.\d+/).first
        version  = Gem::Version.new version
        bumped = minimum.bump
        unless version >= minimum and version < bumped
          raise "Need #{shell} version ~> #{minimum}"
        end
        # need to only check once
        SHELL_VERSION[shell] = nil
      else
        raise "Could not get the #{shell} version"
      end
    end
    shell = shell.to_s
    if kw.length > 0
      shell << ' ' + kw.select{_2}.map{
        "--#{_1}=#{_2}".sub(/=(true)?$/,'').sub(/^--(\w)$/, '-\1')}.join(' ')
    end
    script = args[0]
    return Rubbish.shell(script, shell:shell, read:read,  &block)
  end
  super
end

.shell(script = nil, shell: 'bash', read: true, &block) ⇒ Object 



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# File 'lib/rubbish.rb', line 5

def self.shell(script=nil, shell:'bash', read:true, &block)
  IO.popen(shell, (read)? 'w+' : 'w') do |pipe|
    # No matter what, we know we're going to write first.
    writing = true
    if script
      # We were given the script, so we write it and close.
      pipe.write script
      pipe.close_write
      writing = false
    end
    block.call(pipe) if block
    # close if we were writing
    pipe.close_write if writing
    # Read if reading
    read = pipe.read if read
  end
  read || $?.to_i==0
end