Class: Ragol::OptionSet

Inherits:
Object
  • Object
show all
Includes:
Logue::Loggable
Defined in:
lib/ragol/optset.rb

Direct Known Subclasses

OptProc::OptionSet, Synoption::OptionSet

Constant Summary collapse

@@options_for_class =

maps from an OptionSet class to the valid options for that class.

Hash.new { |h, k| h[k] = Array.new }

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*options) ⇒ OptionSet

Returns a new instance of OptionSet.



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# File 'lib/ragol/optset.rb', line 26

def initialize(*options)
  if options[0] && options[0].kind_of?(Hash)
    data = options[0][:data]
    options = data.collect do |optdata|
      optargs = OptionArguments.new(optdata)

      opttype = optargs[:valuetype]
      clstype = OptionArguments::VAR_TYPES[opttype]

      if clstype
        clsstr = clstype.to_s
        require 'ragol/' + clsstr + '_option'
        clssym = (clsstr.capitalize + 'Option').to_sym
        optcls = ::Ragol.const_get(clssym)
        optcls.new(optargs)
      else
        Ragol::Option.new(optargs)
      end
    end
  end
  
  @options = options

  cls = self.class
  while cls <= OptionSet
    opts = self.class.options_for_class(cls)
    
    opts.each do |option|
      args = option[:args]
      opt = option[:class].new(*args)
      
      add opt
    end
    
    cls = cls.superclass
  end
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/ragol/optset.rb', line 24

def options
  @options
end

Class Method Details

.has_option(optcls, optargs = Hash.new) ⇒ Object 



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# File 'lib/ragol/optset.rb', line 16

def self.has_option optcls, optargs = Hash.new
  @@options_for_class[self] << { :class => optcls, :args => optargs }
end

.options_for_class(cls) ⇒ Object 



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# File 'lib/ragol/optset.rb', line 20

def self.options_for_class cls
  @@options_for_class[cls]
end

Instance Method Details

#<<(option) ⇒ Object 



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# File 'lib/ragol/optset.rb', line 76

def << option
  add option
end

#add(option) ⇒ Object 



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# File 'lib/ragol/optset.rb', line 80

def add option
  @options << option
  option
end

#find_by_name(name) ⇒ Object 



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# File 'lib/ragol/optset.rb', line 72

def find_by_name name
  @options.find { |opt| opt.name == name }
end

#find_matching_option(results) ⇒ Object 



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# File 'lib/ragol/optset.rb', line 120

def find_matching_option results
  type, opt = get_best_match(results)

  unless type
    raise OptionException.new "#{name}: invalid option '#{results.current_arg}'"
  end

  [ type, opt ]
end

#get_best_match(results) ⇒ Object 



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# File 'lib/ragol/optset.rb', line 85

def get_best_match results
  tag_matches = Hash.new { |h, k| h[k] = Array.new }
  negative_match = nil
  regexp_match = nil

  options.each do |opt|
    if mt = opt.matchers.match_type?(results.current_arg)
      case mt[0]
      when :tag_match
        tag_matches[mt[1]] << opt
      when :negative_match
        negative_match = opt
      when :regexp_match
        regexp_match = opt
      end
    end
  end

  if tag_matches.keys.any?
    highest = tag_matches.keys.sort[-1]
    opts = tag_matches[highest]
    if opts.size > 1
      optstr = opts.collect { |opt| '(' + opt.to_s + ')' }.join(', ')
      raise "ambiguous match of '#{results.current_arg}'; matches options: #{optstr}"
    end
    [ :tag_match, opts.first ]
  elsif negative_match
    [ :negative_match, negative_match ]
  elsif regexp_match
    [ :regexp_match, regexp_match ]
  else
    nil
  end
end

#inspect ⇒ Object 



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# File 'lib/ragol/optset.rb', line 68

def inspect
  @options.collect { |opt| opt.inspect }.join("\n")
end

#name ⇒ Object 



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# File 'lib/ragol/optset.rb', line 64

def name
  @name ||= self.class.to_s.sub(%r{.*?(\w+)OptionSet}, '\1').downcase
end

#process(args, results = Ragol::Results.new(options, args)) ⇒ Object 



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# File 'lib/ragol/optset.rb', line 148

def process args, results = Ragol::Results.new(options, args)
  options_processed = Array.new
  
  while !results.args_empty?
    if results.end_of_options?
      results.shift_arg
      break
    elsif results.current_arg[0] != '-'
      break
    end

    option = set_option(results)
    if option
      options_processed << option
    else
      break
    end
  end

  options_processed.each do |opt|
    opt.post_process self, results, results.args
  end
  
  results
end

#read_rclines(lines, results = Ragol::Results.new(options, nil)) ⇒ Object 



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# File 'lib/ragol/optset.rb', line 180

def read_rclines lines, results = Ragol::Results.new(options, nil)
  lines.each do |line|
    line.sub!(%r{\#.*}, '')
    next if line.empty?
    name, val = line.split(%r{\s*:\s*})
    if opt = @options.detect { |op| op.match_rc? name }
      opt.set_option_value val, name, results
    end
  end

  results
end

#set_option(results) ⇒ Object 



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# File 'lib/ragol/optset.rb', line 130

def set_option results
  type, opt = find_matching_option(results)

  case type
  when :tag_match
    arg = results.next_arg
    opt.set_value_for_tag results, arg
  when :negative_match
    arg = results.next_arg
    opt.set_value_negative results, arg
  when :regexp_match
    arg = results.next_arg
    opt.set_value_regexp results, arg
  end

  opt
end

#unset(results, key) ⇒ Object 



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# File 'lib/ragol/optset.rb', line 174

def unset results, key
  if opt = find_by_name(key)
    results.unset_value opt.name
  end
end