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

.new ⇒ List constructor

Just initializes all instance variables.

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

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

See accept.
#append(*args)

Appends switch at the tail of the list, and associates short, long and negated long options.
#complete(id, opt, icase = false, *pat, &block)

Searches list id for opt and the optional patterns for completion pat.
#each_option(&block)

Iterates over each option, passing the option to the block.
#get_candidates(id) {|__send__(id).keys| ... }
#prepend(*args)

Inserts switch at the head of the list, and associates short, long and negated long options.
#reject(t)

See reject.
#search(id, key)

Searches key in id list.
#summarize(*args, &block)

Creates the summary table, passing each line to the block (without newline).
#add_banner(to) Internal use only
#compsys(*args, &block) Internal use only
#pretty_print(q) Internal use only
#update(sw, sopts, lopts, nsw = nil, nlopts = nil) private Internal use only

Adds sw according to sopts, lopts and nlopts.

Constructor Details

.new ⇒ `List`

Just initializes all instance variables.

[ GitHub ]

# File 'lib/optparse.rb', line 816


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 802


attr_reader :atype

#list (readonly)

List of all switches and summary string.

[ GitHub ]

# File 'lib/optparse.rb', line 811


attr_reader :list

#long (readonly)

Map from long style option switches to actual switch objects.

[ GitHub ]

# File 'lib/optparse.rb', line 808


attr_reader :long

#short (readonly)

Map from short style option switches to actual switch objects.

[ GitHub ]

# File 'lib/optparse.rb', line 805


attr_reader :short

Instance Method Details

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

See OptionParser.accept.

[ GitHub ]

# File 'lib/optparse.rb', line 837


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 961


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 901


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 923


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 970


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 934


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

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

Yields:

(__send__(id).keys)

[ GitHub ]

# File 'lib/optparse.rb', line 927


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 885


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

#pretty_print(q)

This method is for internal use only.

[ GitHub ]

# File 'lib/optparse.rb', line 823


def pretty_print(q)         # :nodoc:
  q.group(1, "(", ")") do
    @list.each do |sw|
      next unless Switch === sw
      q.group(1, "(" + sw.pretty_head, ")") do
        sw.pretty_print_contents(q)
      end
    end
  end
end

#reject(t)

See OptionParser.reject.

[ GitHub ]

# File 'lib/optparse.rb', line 853


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 910


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 943


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 865


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

Class: OptionParser::List

Overview

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new ⇒ List

Instance Attribute Details

#atype (readonly)

#list (readonly)

#long (readonly)

#short (readonly)

Instance Method Details

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

#add_banner(to)

#append(*args)

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

#compsys(*args, &block)

#each_option(&block)

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

#prepend(*args)

#pretty_print(q)

#reject(t)

#search(id, key)

#summarize(*args, &block)

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

.new ⇒ `List`

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