class OptionParser

# File lib/optparse.rb, line 917
def self.accept(*args, &blk) top.accept(*args, &blk) end

# File lib/optparse/version.rb, line 49
def each_const(path, base = ::Object)
  path.split(/::|\//).inject(base) do |klass, name|
    raise NameError, path unless Module === klass
    klass.constants.grep(/#{name}/i) do |c|
      klass.const_defined?(c) or next
      c = klass.const_get(c)
    end
  end
end

# File lib/optparse.rb, line 1501
def self.getopts(*args)
  new.getopts(*args)
end

# File lib/optparse.rb, line 853
def self.inc(arg, default = nil)
  case arg
  when Integer
    arg.nonzero?
  when nil
    default.to_i + 1
  end
end

# File lib/optparse.rb, line 872
def initialize(banner = nil, width = 32, indent = ' ' * 4)
  @stack = [DefaultList, List.new, List.new]
  @program_name = nil
  @banner = banner
  @summary_width = width
  @summary_indent = indent
  @default_argv = ARGV
  add_officious
  yield self if block_given?
end

# File lib/optparse.rb, line 930
def self.reject(*args, &blk) top.reject(*args, &blk) end

# File lib/optparse/version.rb, line 59
def search_const(klass, name)
  klasses = [klass]
  while klass = klasses.shift
    klass.constants.each do |cname|
      klass.const_defined?(cname) or next
      const = klass.const_get(cname)
      yield klass, cname, const if name === cname
      klasses << const if Module === const and const != ::Object
    end
  end
end

# File lib/optparse/version.rb, line 4
def show_version(*pkgs)
  progname = ARGV.options.program_name
  result = false
  show = proc do |klass, cname, version|
    str = "#{progname}"
    unless klass == ::Object and cname == :VERSION
      version = version.join(".") if Array === version
      str << ": #{klass}" unless klass == Object
      str << " version #{version}"
    end
    [:Release, :RELEASE].find do |rel|
      if klass.const_defined?(rel)
        str << " (#{klass.const_get(rel)})"
      end
    end
    puts str
    result = true
  end
  if pkgs.size == 1 and pkgs[0] == "all"
    self.search_const(::Object, /\AV(?:ERSION|ersion)\z/) do |klass, cname, version|
      unless cname[1] == ?e and klass.const_defined?(:Version)
        show.call(klass, cname.intern, version)
      end
    end
  else
    pkgs.each do |pkg|
      begin
        pkg = pkg.split(/::|\//).inject(::Object) {|m, c| m.const_get(c)}
        v = case
            when pkg.const_defined?(:Version)
              pkg.const_get(n = :Version)
            when pkg.const_defined?(:VERSION)
              pkg.const_get(n = :VERSION)
            else
              n = nil
              "unknown"
            end
        show.call(pkg, n, v)
      rescue NameError
      end
    end
  end
  result
end

# File lib/optparse.rb, line 897
def self.terminate(arg = nil)
  throw :terminate, arg
end

# File lib/optparse.rb, line 902
def self.top() DefaultList end

# File lib/optparse.rb, line 844
def self.with(*args, &block)
  opts = new(*args)
  opts.instance_eval(&block)
  opts
end

# File lib/optparse.rb, line 1011
def abort(mesg = $!)
  super("#{program_name}: #{mesg}")
end

# File lib/optparse.rb, line 913
def accept(*args, &blk) top.accept(*args, &blk) end

# File lib/optparse.rb, line 955
def banner
  unless @banner
    @banner = "Usage: #{program_name} [options]"
    visit(:add_banner, @banner)
  end
  @banner
end

# File lib/optparse.rb, line 1025
def base
  @stack[1]
end

# File lib/optparse.rb, line 1548
def candidate(word)
  list = []
  case word
  when /\A--/
    word, arg = word.split(/=/, 2)
    argpat = Completion.regexp(arg, false) if arg and !arg.empty?
    long = true
  when /\A-(!-)/
    short = true
  when /\A-/
    long = short = true
  end
  pat = Completion.regexp(word, true)
  visit(:each_option) do |opt|
    next unless Switch === opt
    opts = (long ? opt.long : []) + (short ? opt.short : [])
    opts = Completion.candidate(word, true, pat, &opts.method(:each)).map(&:first) if pat
    if /\A=/ =~ opt.arg
      opts.map! {|sw| sw + "="}
      if arg and CompletingHash === opt.pattern
        if opts = opt.pattern.candidate(arg, false, argpat)
          opts.map!(&:last)
        end
      end
    end
    list.concat(opts)
  end
  list
end

# File lib/optparse.rb, line 1274
def define(*opts, &block)
  top.append(*(sw = make_switch(opts, block)))
  sw[0]
end

# File lib/optparse.rb, line 1289
def define_head(*opts, &block)
  top.prepend(*(sw = make_switch(opts, block)))
  sw[0]
end

# File lib/optparse.rb, line 1303
def define_tail(*opts, &block)
  base.append(*(sw = make_switch(opts, block)))
  sw[0]
end

# File lib/optparse.rb, line 1605
def environment(env = File.basename($0, '.*'))
  env = ENV[env] || ENV[env.upcase] or return
  require 'shellwords'
  parse(*Shellwords.shellwords(env))
end

# File lib/optparse.rb, line 1467
def getopts(*args)
  argv = Array === args.first ? args.shift : default_argv
  single_options, *long_options = *args

  result = {}

  single_options.scan(/(.)(:)?/) do |opt, val|
    if val
      result[opt] = nil
      define("-#{opt} VAL")
    else
      result[opt] = false
      define("-#{opt}")
    end
  end if single_options

  long_options.each do |arg|
    opt, val = arg.split(':', 2)
    if val
      result[opt] = val.empty? ? nil : val
      define("--#{opt} VAL")
    else
      result[opt] = false
      define("--#{opt}")
    end
  end

  parse_in_order(argv, result.method(:[]=))
  result
end

# File lib/optparse.rb, line 1066
def help; summarize("#{banner}".sub(/\n?\z/, "\n")) end

# File lib/optparse.rb, line 861
def inc(*args)
  self.class.inc(*args)
end

# File lib/optparse.rb, line 1585
def load(filename = nil)
  begin
    filename ||= File.expand_path(File.basename($0, '.*'), '~/.options')
  rescue
    return false
  end
  begin
    parse(*IO.readlines(filename).each {|s| s.chomp!})
    true
  rescue Errno::ENOENT, Errno::ENOTDIR
    false
  end
end

# File lib/optparse.rb, line 1150
def make_switch(opts, block = nil)
  short, long, nolong, style, pattern, conv, not_pattern, not_conv, not_style = [], [], []
  ldesc, sdesc, desc, arg = [], [], []
  default_style = Switch::NoArgument
  default_pattern = nil
  klass = nil
  q, a = nil

  opts.each do |o|
    # argument class
    next if search(:atype, o) do |pat, c|
      klass = notwice(o, klass, 'type')
      if not_style and not_style != Switch::NoArgument
        not_pattern, not_conv = pat, c
      else
        default_pattern, conv = pat, c
      end
    end

    # directly specified pattern(any object possible to match)
    if (!(String === o || Symbol === o)) and o.respond_to?(:match)
      pattern = notwice(o, pattern, 'pattern')
      if pattern.respond_to?(:convert)
        conv = pattern.method(:convert).to_proc
      else
        conv = SPLAT_PROC
      end
      next
    end

    # anything others
    case o
    when Proc, Method
      block = notwice(o, block, 'block')
    when Array, Hash
      case pattern
      when CompletingHash
      when nil
        pattern = CompletingHash.new
        conv = pattern.method(:convert).to_proc if pattern.respond_to?(:convert)
      else
        raise ArgumentError, "argument pattern given twice"
      end
      o.each {|pat, *v| pattern[pat] = v.fetch(0) {pat}}
    when Module
      raise ArgumentError, "unsupported argument type: #{o}", ParseError.filter_backtrace(caller(4))
    when *ArgumentStyle.keys
      style = notwice(ArgumentStyle[o], style, 'style')
    when /^--no-([^\[\]=\s]*)(.+)?/
      q, a = $1, $2
      o = notwice(a ? Object : TrueClass, klass, 'type')
      not_pattern, not_conv = search(:atype, o) unless not_style
      not_style = (not_style || default_style).guess(arg = a) if a
      default_style = Switch::NoArgument
      default_pattern, conv = search(:atype, FalseClass) unless default_pattern
      ldesc << "--no-#{q}"
      long << 'no-' + (q = q.downcase)
      nolong << q
    when /^--\[no-\]([^\[\]=\s]*)(.+)?/
      q, a = $1, $2
      o = notwice(a ? Object : TrueClass, klass, 'type')
      if a
        default_style = default_style.guess(arg = a)
        default_pattern, conv = search(:atype, o) unless default_pattern
      end
      ldesc << "--[no-]#{q}"
      long << (o = q.downcase)
      not_pattern, not_conv = search(:atype, FalseClass) unless not_style
      not_style = Switch::NoArgument
      nolong << 'no-' + o
    when /^--([^\[\]=\s]*)(.+)?/
      q, a = $1, $2
      if a
        o = notwice(NilClass, klass, 'type')
        default_style = default_style.guess(arg = a)
        default_pattern, conv = search(:atype, o) unless default_pattern
      end
      ldesc << "--#{q}"
      long << (o = q.downcase)
    when /^-(\[\^?\]?(?:[^\\]]|\.)*\])(.+)?/
      q, a = $1, $2
      o = notwice(Object, klass, 'type')
      if a
        default_style = default_style.guess(arg = a)
        default_pattern, conv = search(:atype, o) unless default_pattern
      end
      sdesc << "-#{q}"
      short << Regexp.new(q)
    when /^-(.)(.+)?/
      q, a = $1, $2
      if a
        o = notwice(NilClass, klass, 'type')
        default_style = default_style.guess(arg = a)
        default_pattern, conv = search(:atype, o) unless default_pattern
      end
      sdesc << "-#{q}"
      short << q
    when /^=/
      style = notwice(default_style.guess(arg = o), style, 'style')
      default_pattern, conv = search(:atype, Object) unless default_pattern
    else
      desc.push(o)
    end
  end

  default_pattern, conv = search(:atype, default_style.pattern) unless default_pattern
  if !(short.empty? and long.empty?)
    s = (style || default_style).new(pattern || default_pattern,
                                     conv, sdesc, ldesc, arg, desc, block)
  elsif !block
    if style or pattern
      raise ArgumentError, "no switch given", ParseError.filter_backtrace(caller)
    end
    s = desc
  else
    short << pattern
    s = (style || default_style).new(pattern,
                                     conv, nil, nil, arg, desc, block)
  end
  return s, short, long,
    (not_style.new(not_pattern, not_conv, sdesc, ldesc, nil, desc, block) if not_style),
    nolong
end

# File lib/optparse.rb, line 1032
def new
  @stack.push(List.new)
  if block_given?
    yield self
  else
    self
  end
end

# File lib/optparse.rb, line 1283
def on(*opts, &block)
  define(*opts, &block)
  self
end

# File lib/optparse.rb, line 1297
def on_head(*opts, &block)
  define_head(*opts, &block)
  self
end

# File lib/optparse.rb, line 1311
def on_tail(*opts, &block)
  define_tail(*opts, &block)
  self
end

# File lib/optparse.rb, line 1330
def order(*argv, &block)
  argv = argv[0].dup if argv.size == 1 and Array === argv[0]
  order!(argv, &block)
end

# File lib/optparse.rb, line 1339
def order!(argv = default_argv, &nonopt)
  parse_in_order(argv, &nonopt)
end

# File lib/optparse.rb, line 1441
def parse(*argv)
  argv = argv[0].dup if argv.size == 1 and Array === argv[0]
  parse!(argv)
end

# File lib/optparse.rb, line 1450
def parse!(argv = default_argv)
  if ENV.include?('POSIXLY_CORRECT')
    order!(argv)
  else
    permute!(argv)
  end
end

# File lib/optparse.rb, line 1421
def permute(*argv)
  argv = argv[0].dup if argv.size == 1 and Array === argv[0]
  permute!(argv)
end

# File lib/optparse.rb, line 1430
def permute!(argv = default_argv)
  nonopts = []
  order!(argv, &nonopts.method(:<<))
  argv[0, 0] = nonopts
  argv
end

# File lib/optparse.rb, line 967
def program_name
  @program_name || File.basename($0, '.*')
end

# File lib/optparse.rb, line 926
def reject(*args, &blk) top.reject(*args, &blk) end

# File lib/optparse.rb, line 992
def release
  @release || (defined?(::Release) && ::Release) || (defined?(::RELEASE) && ::RELEASE)
end

# File lib/optparse.rb, line 1044
def remove
  @stack.pop
end

# File lib/optparse.rb, line 1320
def separator(string)
  top.append(string, nil, nil)
end

# File lib/optparse.rb, line 1057
def summarize(to = [], width = @summary_width, max = width - 1, indent = @summary_indent, &blk)
  blk ||= proc {|l| to << (l.index($/, -1) ? l : l + $/)}
  visit(:summarize, {}, {}, width, max, indent, &blk)
  to
end

# File lib/optparse.rb, line 894
def terminate(arg = nil)
  self.class.terminate(arg)
end

# File lib/optparse.rb, line 1072
def to_a; summarize("#{banner}".split(/^/)) end

# File lib/optparse.rb, line 1018
def top
  @stack[-1]
end

# File lib/optparse.rb, line 999
def ver
  if v = version
    str = "#{program_name} #{[v].join('.')}"
    str << " (#{v})" if v = release
    str
  end
end

# File lib/optparse.rb, line 985
def version
  @version || (defined?(::Version) && ::Version)
end

# File lib/optparse.rb, line 1007
def warn(mesg = $!)
  super("#{program_name}: #{mesg}")
end

# File lib/optparse.rb, line 1537
def complete(typ, opt, icase = false, *pat)
  if pat.empty?
    search(typ, opt) {|sw| return [sw, opt]} # exact match or...
  end
  raise AmbiguousOption, catch(:ambiguous) {
    visit(:complete, typ, opt, icase, *pat) {|o, *sw| return sw}
    raise InvalidOption, opt
  }
end

# File lib/optparse.rb, line 1082
def notwice(obj, prv, msg)
  unless !prv or prv == obj
    raise(ArgumentError, "argument #{msg} given twice: #{obj}",
          ParseError.filter_backtrace(caller(2)))
  end
  obj
end

# File lib/optparse.rb, line 1520
def search(id, key)
  block_given = block_given?
  visit(:search, id, key) do |k|
    return block_given ? yield(k) : k
  end
end

# File lib/optparse.rb, line 1509
def visit(id, *args, &block)
  @stack.reverse_each do |el|
    el.send(id, *args, &block)
  end
  nil
end