Extended maintenance of Ruby 1.9.3 ended on February 23, 2015. Read more

In Files

  • optparse.rb

OptionParser::List

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

Attributes

atype[R]

Map from acceptable argument types to pattern and converter pairs.

list[R]

List of all switches and summary string.

long[R]

Map from long style option switches to actual switch objects.

short[R]

Map from short style option switches to actual switch objects.

Public Class Methods

new() click to toggle source

Just initializes all instance variables.

 
               # File optparse.rb, line 562
def initialize
  @atype = {}
  @short = OptionMap.new
  @long = OptionMap.new
  @list = []
end

Public Instance Methods

accept(t, pat = /.*/m, &block) click to toggle source

See OptionParser#accept.

 
               # File optparse.rb, line 572
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
append(*args) click to toggle source

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

switch

OptionParser::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)

 
               # File optparse.rb, line 636
def append(*args)
  update(*args)
  @list.push(args[0])
end
complete(id, opt, icase = false, *pat, &block) click to toggle source

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.

 
               # File optparse.rb, line 658
def complete(id, opt, icase = false, *pat, &block)
  __send__(id).complete(opt, icase, *pat, &block)
end
each_option(&block) click to toggle source

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

 
               # File optparse.rb, line 665
def each_option(&block)
  list.each(&block)
end
prepend(*args) click to toggle source

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

switch

OptionParser::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)

 
               # File optparse.rb, line 620
def prepend(*args)
  update(*args)
  @list.unshift(args[0])
end
reject(t) click to toggle source

See OptionParser#reject.

 
               # File optparse.rb, line 588
def reject(t)
  @atype.delete(t)
end
search(id, key) click to toggle source

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

 
               # File optparse.rb, line 645
def search(id, key)
  if list = __send__(id)
    val = list.fetch(key) {return nil}
    block_given? ? yield(val) : val
  end
end
summarize(*args, &block) click to toggle source

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.

 
               # File optparse.rb, line 674
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

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