Class: DuperVisor::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/dupervisor/cli.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/dupervisor/cli.rb', line 11

def initialize(args)
  self.args    = args
  self.config = Config.new
end

Instance Attribute Details

#args ⇒ Object

Returns the value of attribute args.



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# File 'lib/dupervisor/cli.rb', line 9

def args
  @args
end

#config ⇒ Object

Returns the value of attribute config.



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# File 'lib/dupervisor/cli.rb', line 9

def config
  @config
end

#parser ⇒ Object

Returns the value of attribute parser.



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# File 'lib/dupervisor/cli.rb', line 9

def parser
  @parser
end

Instance Method Details

#example_banner(opts) ⇒ Object 



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# File 'lib/dupervisor/cli.rb', line 58

def example_banner(opts)
  opts.separator ''
  opts.separator 'Examples:'.bold.blue
  opts.separator ''
  opts.separator '    # guess input format, convert YAML format to an INI file'
  opts.separator '    cat config.yml | dv --ini > config.ini'.green
  opts.separator ''
  opts.separator '    # guess input format, convert INI format to a JSON file '
  opts.separator '    dv config.ini --json -o config.json'.green

  opts.separator ''
  opts.separator 'Common options:'.bold.blue
end

#parse ⇒ Object 



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# File 'lib/dupervisor/cli.rb', line 16

def parse
  self.parser = OptionParser.new do |opts|
    usage_banner(opts)

    opts.on('--ini', 'Generate an INI file') do
      config.to = :ini
    end
    opts.on('--yaml', 'Generate a YAML file') do
      config.to = :yaml
    end
    opts.on('--json', 'Generate a JSON file') do
      config.to = :json
    end

    opts.on('-o', '--output [FILE]',
            'File to write, if not supplied write to STDOUT') do |file|
      config.output = file
    end

    opts.on('-v', '--verbose',
            'Print extra debugging info') do
      config.verbose = true
    end
    example_banner(opts)

    # No argument, shows at tail.  This will print an options summary.
    # Try it and see!
    opts.on_tail('-h', '--help', 'Show this message') do
      puts opts
      exit
    end

    # Another typical switch to print the version.
    opts.on_tail('--version', 'Show version') do
      puts DuperVisor::VERSION
      exit
    end
  end
  parser.parse!(args)
  config
end

#usage_banner(opts) ⇒ Object 



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# File 'lib/dupervisor/cli.rb', line 72

def usage_banner(opts)
  opts.banner = 'Usage: '.bold.blue + 'dv [source-file] [options] '.bold.green
  opts.separator ''
  opts.separator '       Convert between several hierarchical configuration'
  opts.separator '       file formats, such as ' + 'ini, yaml, json'.bold.green
  opts.separator ''
  opts.separator '       Automatically guesses the source format based either on'
  opts.separator '       the file extension, or by attempting to parse it for STDIN'
  opts.separator ''
  opts.separator 'Specific options:'.bold.blue
end