Class: Pione::Command::OptionDefinition

Inherits:
Object
  • Object
show all
Defined in:
lib/pione/command/option.rb

Overview

OptionDefinition is a class for holding option definitions.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ OptionDefinition

Creata a command option context.



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# File 'lib/pione/command/option.rb', line 47

def initialize
  extend OptionInterface
  @items = []      # option item definitions
  @default = {}    # default value table
  @validators = [] # option validators
  @parser_mode = :parse!
end

Instance Attribute Details

#parser_mode ⇒ Object

Returns the value of attribute parser_mode.



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# File 'lib/pione/command/option.rb', line 44

def parser_mode
  @parser_mode
end

Instance Method Details

#default(name, value) ⇒ Object

Define the default value.



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# File 'lib/pione/command/option.rb', line 88

def default(name, value)
  @default[name] = value
end

#item(name) ⇒ Object 



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# File 'lib/pione/command/option.rb', line 55

def item(name)
  @items.find {|item| item.name == name}
end

#parse(argv, command_name, command_banner) ⇒ Object

Parse the command options.



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# File 'lib/pione/command/option.rb', line 60

def parse(argv, command_name, command_banner)
  data = Hash.new

  # parse options
  OptionParser.new do |opt|
    # set banner
    opt.banner = "Usage: %s [options]" % command_name
    opt.banner << "\n\n" + command_banner + "\n" if command_banner

    # set version
    opt.program_name = command_name
    opt.version = Pione::VERSION

    # default values
    @items.each {|item| data[item.name] = item.default if item.default}
    data.merge!(@default)

    # setup option parser
    @items.sort{|a,b| a.long <=> b.long}.each {|item| setup_item(command_name, opt, data, item)}
  end.send(@parser_mode, argv)

  # check option's validness
  check(data)

  return data
end

#validate(&b) ⇒ Object 



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# File 'lib/pione/command/option.rb', line 92

def validate(&b)
  @validators << b
end