Class: Processing::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/picrate/runner.rb

Overview

Utility class to handle the different commands that the ‘picrate’ offers

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/picrate/runner.rb', line 10

def initialize
  @options = {}
end

Instance Attribute Details

#argc ⇒ Object (readonly)

Returns the value of attribute argc.



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# File 'lib/picrate/runner.rb', line 8

def argc
  @argc
end

#filename ⇒ Object (readonly)

Returns the value of attribute filename.



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# File 'lib/picrate/runner.rb', line 8

def filename
  @filename
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/picrate/runner.rb', line 8

def options
  @options
end

Class Method Details

.execute ⇒ Object

Start running a picrate command from the passed-in arguments



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# File 'lib/picrate/runner.rb', line 15

def self.execute
  runner = new
  runner.parse_options(ARGV)
  runner.execute!
end

Instance Method Details

#create ⇒ Object 



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# File 'lib/picrate/runner.rb', line 64

def create
  require_relative 'creators/sketch_writer'
  # in case user supplied extension, we remove it
  SketchWriter.new(File.basename(filename, '.rb')).write
end

#execute! ⇒ Object

Dispatch central.



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# File 'lib/picrate/runner.rb', line 22

def execute!
  show_help if options.empty?
  show_version if options[:version]
  create if options[:create]
  install(filename) if options[:install]
end

#install(library) ⇒ Object 



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# File 'lib/picrate/runner.rb', line 79

def install(library)
  choice = library.downcase
  valid = Regexp.union('samples', 'sound', 'video', 'glvideo')
  return warn format('No installer for %s', choice) unless valid =~ choice
  system "cd #{PICRATE_ROOT}/vendors && rake download_and_copy_#{choice}"
end

#parse_options(args) ⇒ Object

Parse the command-line options. Keep it simple.



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# File 'lib/picrate/runner.rb', line 30

def parse_options(args)
  opt_parser = OptionParser.new do |opts|
    # Set a banner, displayed at the top
    # of the help screen.
    opts.banner = 'Usage: picrate [options] [<sketch.rb>]'

    # Define the options, and what they do
    options[:version] = false
    opts.on('-v', '--version', 'PiCrate Version') do
      options[:version] = true
    end

    options[:install] = false
    message = '<Samples><GLVideo><Video><Sound> Install samples or library'
    opts.on('-i', '--install', message) do
      options[:install] = true
    end

    options[:create] = false
    opts.on('-c', '--create', 'Create new sketch outline') do
      options[:create] = true
    end

    # This displays the help screen, all programs are
    # assumed to have this option.
    opts.on('-h', '--help', 'Display this screen') do
      puts opts
      exit
    end
  end
  @argc = opt_parser.parse(args)
  @filename = argc.shift
end

#show_version ⇒ Object 



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# File 'lib/picrate/runner.rb', line 70

def show_version
  require 'erb'
  template = ERB.new <<-EOF
    PiCrate version <%= PiCrate::VERSION %>
    JRuby version <%= JRUBY_VERSION %>
  EOF
  puts template.result(binding)
end