Class: H8::Command

Inherits:
Object show all
Defined in:
lib/h8/command.rb

Defined Under Namespace

Classes: Console, FileProxy, Stream

Instance Method Summary collapse

Constructor Details

#initialize(*args, out: STDOUT, err: STDERR, dont_run: false) ⇒ Command

Returns a new instance of Command.



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# File 'lib/h8/command.rb', line 10

def initialize *args, out: STDOUT, err: STDERR, dont_run: false
  @out = out
  @err = err

  run *args unless dont_run
end

Instance Method Details

#context ⇒ Object 



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# File 'lib/h8/command.rb', line 63

def context
  @context ||= begin
    cxt             = H8::Context.new
    console         = Console.new out: @out, err: @err
    cxt[:console]   = console
    print           = -> (*args) { console.debug *args }
    cxt[:print]     = print
    cxt[:puts]      = print
    cxt[:open]      = -> (name, mode='r', block=nil) { Stream.new(name, mode, block) }
    cxt['__FILE__'] = @file ? @file.to_s : '<inline>'
    cxt[:File]      = FileProxy.new
    cxt
  end
end

#run(*args) ⇒ Object 



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# File 'lib/h8/command.rb', line 25

def run *args
  count = 0

  @parser = Pargser.new(args)

  @parser.key('-e', default: false, doc: 'inline coffee code to execute') { |script|
    if script
      @file = '-e'
      context.coffee (@script=script)
      count += 1
    end
  }
      .key('-x', default: nil, doc: 'inline js code to execute') { |script|
    if script
      @file = '-e'
      context.eval (@script=script)
      count += 1
    end
  }
      .key('-h', '--h') {
    usage
    count = -100000000
  }

  rest = @parser.parse { |file|
    count   += 1
    @script = open(file, 'r').read
    file.downcase.end_with?('.coffee') and @script = H8::Coffee.compile(@script)
    @file = file
    context.eval @script
  }

  unless count != 0
    STDERR.puts 'H8: error: provide at least one file (use -h for help)'
    exit 300
  end
end

#usage ⇒ Object 



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# File 'lib/h8/command.rb', line 17

def usage
  puts "h8 #{H8::VERSION} CLI runner\n"
  puts "Usage:\n h8 [keys] file1..."
  puts
  puts "executes 1 or more javascript/coffeescript files connected with Ruby environment"
  puts @parser.keys_doc
end