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Class: OptionParser::List

Relationships & Source Files
Inherits: Object
Defined in: lib/optparse.rb

Overview

Simple option list providing mapping from short and/or long option string to Switch and mapping from acceptable argument to matching pattern and converter pair. Also provides summary feature.

Class Method Summary

Instance Attribute Summary

  • #atype readonly

    Map from acceptable argument types to pattern and converter pairs.

  • #list readonly

    List of all switches and summary string.

  • #long readonly

    Map from long style option switches to actual switch objects.

  • #short readonly

    Map from short style option switches to actual switch objects.

Instance Method Summary

Constructor Details

.new ⇒ List

Just initializes all instance variables.

[ GitHub ] 

  


# File 'lib/optparse.rb', line 777



def initialize
  @atype = {}
  @short = OptionMap.new
  @long = OptionMap.new
  @list = []
end


  







Instance Attribute Details



  

    #atype   (readonly)
  



  

    

Map from acceptable argument types to pattern and converter pairs.


  



  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 763



attr_reader :atype


  








  

    #list   (readonly)
  



  

    

List of all switches and summary string.


  



  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 772



attr_reader :list


  








  

    #long   (readonly)
  



  

    

Map from long style option switches to actual switch objects.


  



  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 769



attr_reader :long


  








  

    #short   (readonly)
  



  

    

Map from short style option switches to actual switch objects.


  



  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 766



attr_reader :short


  







Instance Method Details



  

    #accept(t, pat = /.*/m, &block)  
  



  

    

See OptionParser.accept.


  



  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 787



def accept(t, pat = /.*/m, &block)
  if pat
    pat.respond_to?(:match) or
      raise TypeError, "has no `match'", ParseError.filter_backtrace(caller(2))
  else
    pat = t if t.respond_to?(:match)
  end
  unless block
    block = pat.method(:convert).to_proc if pat.respond_to?(:convert)
  end
  @atype[t] = [pat, block]
end


  








  

    #add_banner(to)  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 911



def add_banner(to)  # :nodoc:
  list.each do |opt|
    if opt.respond_to?(:add_banner)
      opt.add_banner(to)
    end
  end
  to
end


  








  

    #append(*args)  
  



  

    

Appends switch at the tail of the list, and associates short, long and negated long options. Arguments are:


switch



Switch instance to be inserted.


short_opts



List of short style options.


long_opts



List of long style options.


nolong_opts



List of long style options with “no-” prefix.





append(switch, short_opts, long_opts, nolong_opts)


  



  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 851



def append(*args)
  update(*args)
  @list.push(args[0])
end


  








  

    #complete(id, opt, icase = false, *pat, &block)  
  



  

    

Searches list id for opt and the optional patterns for completion pat. If icase is true, the search is case insensitive. The result is returned or yielded if a block is given. If it isn’t found, nil is returned.


  



  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 873



def complete(id, opt, icase = false, *pat, &block)
  __send__(id).complete(opt, icase, *pat, &block)
end


  








  

    #compsys(*args, &block)  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 920



def compsys(*args, &block)  # :nodoc:
  list.each do |opt|
    if opt.respond_to?(:compsys)
      opt.compsys(*args, &block)
    end
  end
end


  








  

    #each_option(&block)  
  



  

    

Iterates over each option, passing the option to the block.


  



  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 884



def each_option(&block)
  list.each(&block)
end


  








  

    #get_candidates(id) {|__send__(id).keys| ... } 
  



  

    
  





  
Yields:


    
  
  • 
    (__send__(id).keys)
  
    • 





  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 877



def get_candidates(id)
  yield __send__(id).keys
end


  








  

    #prepend(*args)  
  



  

    

Inserts switch at the head of the list, and associates short, long and negated long options. Arguments are:


switch



Switch instance to be inserted.


short_opts



List of short style options.


long_opts



List of long style options.


nolong_opts



List of long style options with “no-” prefix.





prepend(switch, short_opts, long_opts, nolong_opts)


  



  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 835



def prepend(*args)
  update(*args)
  @list.unshift(args[0])
end


  








  

    #reject(t)  
  



  

    

See OptionParser.reject.


  



  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 803



def reject(t)
  @atype.delete(t)
end


  








  

    #search(id, key)  
  



  

    

Searches key in id list. The result is returned or yielded if a block is given. If it isn’t found, nil is returned.


  



  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 860



def search(id, key)
  if list = __send__(id)
    val = list.fetch(key) {return nil}
    block_given? ? yield(val) : val
  end
end


  








  

    #summarize(*args, &block)  
  



  

    

Creates the summary table, passing each line to the block (without newline). The arguments args are passed along to the summarize method which is called on every option.


  



  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 893



def summarize(*args, &block)
  sum = []
  list.reverse_each do |opt|
    if opt.respond_to?(:summarize) # perhaps OptionParser::Switch
      s = []
      opt.summarize(*args) {|l| s << l}
      sum.concat(s.reverse)
    elsif !opt or opt.empty?
      sum << ""
    elsif opt.respond_to?(:each_line)
      sum.concat([*opt.each_line].reverse)
    else
      sum.concat([*opt.each].reverse)
    end
  end
  sum.reverse_each(&block)
end


  








  

    #update(sw, sopts, lopts, nsw = nil, nlopts = nil)   (private)
  

  

    This method is for internal use only.
  



  

    

Adds sw according to sopts, lopts and nlopts.


sw



Switch instance to be added.


sopts



Short style option list.


lopts



Long style option list.


nlopts



Negated long style options list.




  



  [ GitHub ]


  

  


# File 'lib/optparse.rb', line 815



def update(sw, sopts, lopts, nsw = nil, nlopts = nil) # :nodoc:
  sopts.each {|o| @short[o] = sw} if sopts
  lopts.each {|o| @long[o] = sw} if lopts
  nlopts.each {|o| @long[o] = nsw} if nsw and nlopts
  used = @short.invert.update(@long.invert)
  @list.delete_if {|o| Switch === o and !used[o]}
end