Class: OptParse2

Inherits:
OptParse
  • Object
show all
Defined in:
lib/optparse2.rb,
lib/optparse2.rb,
lib/optparse2/fixes.rb,
lib/optparse2/context.rb,
lib/optparse2/version.rb,
lib/optparse2/switch-helpers.rb

Overview

Make sure it’s a subclass

Defined Under Namespace

Modules: Helpers, Pathname, Positional Classes: Context

Constant Summary collapse

DONT_ASSIGN =

A constant that, when returned, will not actually assign objects inside ‘into:`s.

Object.new.freeze
VERSION = 
"0.7.0"

Class Attribute Summary collapse

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ OptParse2

Returns a new instance of OptParse2.



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# File 'lib/optparse2.rb', line 18

def initialize(...)
  @defaults = Set[]
  @positional = []
  @required = Set[]
  @rest = nil
  @group = nil
  self.pos_set_banner = OptParse2.pos_set_banner
  super
end

Class Attribute Details

.pos_set_banner ⇒ Object

Returns the value of attribute pos_set_banner.



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# File 'lib/optparse2.rb', line 14

def pos_set_banner
  @pos_set_banner
end

Instance Attribute Details

#pos_set_banner ⇒ Object

Returns the value of attribute pos_set_banner.



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# File 'lib/optparse2.rb', line 236

def pos_set_banner
  @pos_set_banner
end

Instance Method Details

#_super_order! ⇒ Object 



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# File 'lib/optparse2.rb', line 93

alias _super_order! order!

#def_head_option ⇒ Object 



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# File 'lib/optparse2/fixes.rb', line 8

def define_head(*opts, **, &block) top.prepend(*(sw = make_switch(opts, block, **))); sw[0] end

#define(*opts, &block) ⇒ Object Also known as: def_option

Provide support for passing keyword arguments into ‘make_switch`



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# File 'lib/optparse2/fixes.rb', line 3

def define(*opts, **, &block) top.append(*(sw = make_switch(opts, block, **))); sw[0] end

#define_head(*opts, &block) ⇒ Object 



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# File 'lib/optparse2/fixes.rb', line 7

def define_head(*opts, **, &block) top.prepend(*(sw = make_switch(opts, block, **))); sw[0] end

#group(name, default: nodefault=true) ⇒ Object 



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# File 'lib/optparse2.rb', line 82

def group(name, default: nodefault=true)
  old_group, @group = @group, name
  yield
  if !nodefault && !@defaults.any? { |x| x.switch_name.to_sym == name }
    (orig_default = default; default = proc { orig_default }) unless default.respond_to?(:call)
    @defaults << Struct.new(:switch_name, :default_){ def default = default_.() }.new(name, default) # TODO: This should probably be extracted out into a class lol
  end
ensure
  @group = old_group
end

#make_switch(opts, block, hidden: false, key: @group, default: nodefault=true, default_bypass: false, default_description: nil, required: false, multiple: nil) ⇒ Object

Update ‘make_switch` to support OptParse2’s keyword arguments



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# File 'lib/optparse2.rb', line 32

def make_switch(
  opts,
  block,
  hidden: false,
  key: @group,
  default: nodefault=true,
  default_bypass: false,
  default_description: nil,
  required: false,
  multiple: nil
)
  sw, *rest = super(opts, block)

  sw.extend Helpers
  if key
    sw.set_switch_name_possibly_block_value key
  end
  sw.set_hidden if hidden
  sw.set_multiple multiple if multiple

  if (not_style = rest[2])
    not_style.extend Helpers
    not_style.switch_name = key if key
    not_style.set_hidden if hidden
  end

  if required
    unless nodefault
      raise ArgumentError, "cannot supply both a default with required: true"
    end
    @required << sw.switch_name
  end

  if nodefault && default_description != nil
    raise ArgumentError, "default: not supplied, but default_description: given"
  elsif nodefault && default_bypass
    raise ArgumentError, "default: not supplied, but default_bypass: given"
  elsif not nodefault
    sw.set_default(default, default_description, default_bypass)
    @defaults << sw
  end

  [sw, *rest]
end

#on ⇒ Object 



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# File 'lib/optparse2/fixes.rb', line 5

def on(...) define(...); self end

#on_head ⇒ Object 



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# File 'lib/optparse2/fixes.rb', line 9

def on_head(...) define_head(...); self end

#on_tail ⇒ Object 



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# File 'lib/optparse2/fixes.rb', line 13

def on_tail(...) define_tail(...); self end

#order!(argv = default_argv, into: nil, **keywords, &nonopt) ⇒ Object 



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# File 'lib/optparse2.rb', line 155

def order!(argv = default_argv, into: nil, **keywords, &nonopt)
  Context.with_context into:, nonopt: do |context|

    # Parse all normal options in the command line
    non_options = []
    trailing_options = super(argv, into: context, **keywords, &non_options.method(:<<))
    not_matched_options = non_options + trailing_options

    # Now parse positional arguments and the "rest" argument
    parse_positional_arguments!(not_matched_options, context, keywords)
    parse_rest_argument!(not_matched_options, context)

    context.handle_deferred!

    # Now handle defaults---anything with a default that hasn't been assigned so far is set
    assign_defaults!(context)

    # Now that all arguments are parsed, and the defaults have been handled, check to make sure
    # that all required arguments are handled.
    ensure_all_required_arguments_were_supplied!(context)

    # For each non-option argument, call the `nonopt` block
    not_matched_options.each(&nonopt)

    # Replace the original argv with the resulting options
    argv.replace not_matched_options
  end
end

#pos(name, *a, key: name, **b, &block) ⇒ Object 



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# File 'lib/optparse2.rb', line 237

def pos(name, *a, key: name, **b, &block)
  banner.concat " #{name}" if pos_set_banner

  sw, *rest = make_switch ["--*-positional-#{@positional.length} #{name}", *a], block, key:, **b
  sw.extend Positional
  sw.name = name
  sw.switch_name = key
  top.append(sw, *rest)
  @positional.append sw
end

#rest(name, *description, key: name.to_s.tr(' ', '-').to_sym, required: 0, &block) ⇒ Object 



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# File 'lib/optparse2.rb', line 248

def rest(name, *description, key: name.to_s.tr(' ', '-').to_sym, required: 0, &block)
  required = case required
             when true then 1
             when false then 0
             when ->x{ Integer === x && !x.negative? } then required
             else raise TypeError, "invalid type for required: #{required.class} (must be bool or positive integer)"
             end

  required = 1 if required == true
  title = "#{'[' if required.zero?}#{name} ...#{']' if required.zero?}"
  banner.concat " #{title}" if pos_set_banner
  title += " (#{required} arg minimum)" if required > 0

  on sprintf "%s%-*s %s", summary_indent, summary_width, title, description.first
  description[1..]&.each do |descr|
    on sprintf "%s%-*s %s", summary_indent, summary_width, '', descr
  end

  @rest = { name:, key:, required: required || 0, block: }
end

#summary(msg) ⇒ Object

Provide a “summary” field, which just puts the message at the end of the usage



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# File 'lib/optparse2.rb', line 78

def summary(msg)
  on_tail("\n" + msg)
end