Class: Homebrew::CLI::Parser

Inherits:
Object
  • Object
show all
Defined in:
extend/os/linux/parser.rb,
cli/parser.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(&block) ⇒ void

Parameters:

  • block (T.proc.bind(Parser).void, nil) 


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# File 'cli/parser.rb', line 111

def initialize(&block)
  @parser = OptionParser.new

  @parser.summary_indent = " " * 2

  # Disable default handling of `--version` switch.
  @parser.base.long.delete("version")

  # Disable default handling of `--help` switch.
  @parser.base.long.delete("help")

  @args = Homebrew::CLI::Args.new

  # Filter out Sorbet runtime type checking method calls.
  cmd_location = caller_locations.select { |location| location.path.exclude?("/gems/sorbet-runtime-") }.second
  @command_name = cmd_location.label.chomp("_args").tr("_", "-")
  @is_dev_cmd = cmd_location.absolute_path.start_with?(Commands::HOMEBREW_DEV_CMD_PATH)

  @constraints = []
  @conflicts = []
  @switch_sources = {}
  @processed_options = []
  @non_global_processed_options = []
  @named_args_type = nil
  @max_named_args = nil
  @min_named_args = nil
  @description = nil
  @usage_banner = nil
  @hide_from_man_page = false
  @formula_options = false
  @cask_options = false

  self.class.global_options.each do |short, long, desc|
    switch short, long, description: desc, env: option_to_name(long), method: :on_tail
  end

  instance_eval(&block) if block

  generate_banner
end

Instance Attribute Details

#hide_from_man_page ⇒ Object (readonly)

Returns the value of attribute hide_from_man_page.



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# File 'cli/parser.rb', line 20

def hide_from_man_page
  @hide_from_man_page
end

#named_args_type ⇒ Object (readonly)

Returns the value of attribute named_args_type.



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# File 'cli/parser.rb', line 20

def named_args_type
  @named_args_type
end

#processed_options ⇒ Object (readonly)

Returns the value of attribute processed_options.



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# File 'cli/parser.rb', line 20

def processed_options
  @processed_options
end

Class Method Details

.from_cmd_path(cmd_path) ⇒ Object 



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# File 'cli/parser.rb', line 22

def self.from_cmd_path(cmd_path)
  cmd_args_method_name = Commands.args_method_name(cmd_path)

  begin
    Homebrew.send(cmd_args_method_name) if require?(cmd_path)
  rescue NoMethodError => e
    raise if e.name.to_sym != cmd_args_method_name

    nil
  end
end

.global_cask_options ⇒ Object 



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# File 'cli/parser.rb', line 34

def self.global_cask_options
  [
    [:flag, "--appdir=", {
      description: "Target location for Applications " \
                   "(default: `#{Cask::Config::DEFAULT_DIRS[:appdir]}`).",
    }],
    [:flag, "--colorpickerdir=", {
      description: "Target location for Color Pickers " \
                   "(default: `#{Cask::Config::DEFAULT_DIRS[:colorpickerdir]}`).",
    }],
    [:flag, "--prefpanedir=", {
      description: "Target location for Preference Panes " \
                   "(default: `#{Cask::Config::DEFAULT_DIRS[:prefpanedir]}`).",
    }],
    [:flag, "--qlplugindir=", {
      description: "Target location for QuickLook Plugins " \
                   "(default: `#{Cask::Config::DEFAULT_DIRS[:qlplugindir]}`).",
    }],
    [:flag, "--mdimporterdir=", {
      description: "Target location for Spotlight Plugins " \
                   "(default: `#{Cask::Config::DEFAULT_DIRS[:mdimporterdir]}`).",
    }],
    [:flag, "--dictionarydir=", {
      description: "Target location for Dictionaries " \
                   "(default: `#{Cask::Config::DEFAULT_DIRS[:dictionarydir]}`).",
    }],
    [:flag, "--fontdir=", {
      description: "Target location for Fonts " \
                   "(default: `#{Cask::Config::DEFAULT_DIRS[:fontdir]}`).",
    }],
    [:flag, "--servicedir=", {
      description: "Target location for Services " \
                   "(default: `#{Cask::Config::DEFAULT_DIRS[:servicedir]}`).",
    }],
    [:flag, "--input-methoddir=", {
      description: "Target location for Input Methods " \
                   "(default: `#{Cask::Config::DEFAULT_DIRS[:input_methoddir]}`).",
    }],
    [:flag, "--internet-plugindir=", {
      description: "Target location for Internet Plugins " \
                   "(default: `#{Cask::Config::DEFAULT_DIRS[:internet_plugindir]}`).",
    }],
    [:flag, "--audio-unit-plugindir=", {
      description: "Target location for Audio Unit Plugins " \
                   "(default: `#{Cask::Config::DEFAULT_DIRS[:audio_unit_plugindir]}`).",
    }],
    [:flag, "--vst-plugindir=", {
      description: "Target location for VST Plugins " \
                   "(default: `#{Cask::Config::DEFAULT_DIRS[:vst_plugindir]}`).",
    }],
    [:flag, "--vst3-plugindir=", {
      description: "Target location for VST3 Plugins " \
                   "(default: `#{Cask::Config::DEFAULT_DIRS[:vst3_plugindir]}`).",
    }],
    [:flag, "--screen-saverdir=", {
      description: "Target location for Screen Savers " \
                   "(default: `#{Cask::Config::DEFAULT_DIRS[:screen_saverdir]}`).",
    }],
    [:comma_array, "--language", {
      description: "Comma-separated list of language codes to prefer for cask installation. " \
                   "The first matching language is used, otherwise it reverts to the cask's " \
                   "default language. The default value is the language of your system.",
    }],
  ]
end

.global_options ⇒ Array<Array(String, String, String)>

Returns:



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# File 'cli/parser.rb', line 101

def self.global_options
  [
    ["-d", "--debug",   "Display any debugging information."],
    ["-q", "--quiet",   "Make some output more quiet."],
    ["-v", "--verbose", "Make some output more verbose."],
    ["-h", "--help",    "Show this message."],
  ]
end

Instance Method Details

#cask_options ⇒ Object 



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# File 'cli/parser.rb', line 372

def cask_options
  self.class.global_cask_options.each do |args|
    options = args.pop
    send(*args, **options)
    conflicts "--formula", args.last
  end
  @cask_options = true
end

#comma_array(name, description: nil, hidden: false) ⇒ Object 



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# File 'cli/parser.rb', line 199

def comma_array(name, description: nil, hidden: false)
  name = name.chomp "="
  description = option_description(description, name, hidden: hidden)
  process_option(name, description, type: :comma_array, hidden: hidden)
  @parser.on(name, OptionParser::REQUIRED_ARGUMENT, Array, *wrap_option_desc(description)) do |list|
    @args[option_to_name(name)] = list
  end
end

#conflicts(*options) ⇒ Object 



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# File 'cli/parser.rb', line 233

def conflicts(*options)
  @conflicts << options.map { |option| option_to_name(option) }
end

#description(text = nil) ⇒ Object 



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# File 'cli/parser.rb', line 185

def description(text = nil)
  return @description if text.blank?

  @description = text.chomp
end

#env?(env) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'cli/parser.rb', line 179

def env?(env)
  return if env.blank?

  Homebrew::EnvConfig.try(:"#{env}?")
end

#flag(*names, description: nil, replacement: nil, depends_on: nil, hidden: false) ⇒ Object 



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# File 'cli/parser.rb', line 208

def flag(*names, description: nil, replacement: nil, depends_on: nil, hidden: false)
  required, flag_type = if names.any? { |name| name.end_with? "=" }
    [OptionParser::REQUIRED_ARGUMENT, :required_flag]
  else
    [OptionParser::OPTIONAL_ARGUMENT, :optional_flag]
  end
  names.map! { |name| name.chomp "=" }
  description = option_description(description, *names, hidden: hidden)
  if replacement.nil?
    process_option(*names, description, type: flag_type, hidden: hidden)
  else
    description += " (disabled#{"; replaced by #{replacement}" if replacement.present?})"
  end
  @parser.on(*names, *wrap_option_desc(description), required) do |option_value|
    odisabled "the `#{names.first}` flag", replacement unless replacement.nil?
    names.each do |name|
      @args[option_to_name(name)] = option_value
    end
  end

  names.each do |name|
    set_constraints(name, depends_on: depends_on)
  end
end

#formula_options ⇒ void

This method returns an undefined value.



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# File 'cli/parser.rb', line 382

def formula_options
  @formula_options = true
end

#generate_help_text ⇒ Object 



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# File 'cli/parser.rb', line 361

def generate_help_text
  Formatter.format_help_text(@parser.to_s, width: COMMAND_DESC_WIDTH)
           .gsub(/\n.*?@@HIDDEN@@.*?(?=\n)/, "")
           .sub(/^/, "#{Tty.bold}Usage: brew#{Tty.reset} ")
           .gsub(/`(.*?)`/m, "#{Tty.bold}\\1#{Tty.reset}")
           .gsub(%r{<([^\s]+?://[^\s]+?)>}) { |url| Formatter.url(url) }
           .gsub(/\*(.*?)\*|<(.*?)>/m) do |underlined|
             underlined[1...-1].gsub(/^(\s*)(.*?)$/, "\\1#{Tty.underline}\\2#{Tty.reset}")
           end
end

#hide_from_man_page! ⇒ void

This method returns an undefined value.



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# File 'cli/parser.rb', line 416

def hide_from_man_page!
  @hide_from_man_page = true
end

#name_to_option(name) ⇒ Object 



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# File 'cli/parser.rb', line 243

def name_to_option(name)
  if name.length == 1
    "-#{name}"
  else
    "--#{name.tr("_", "-")}"
  end
end

#named_args(type = nil, number: nil, min: nil, max: nil) ⇒ void

This method returns an undefined value.

Parameters:

  • type (Symbol, Array<String>, Array<Symbol>) (defaults to: nil)
  • number (Integer, nil) (defaults to: nil)
  • min (Integer, nil) (defaults to: nil)
  • max (Integer, nil) (defaults to: nil) 


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# File 'cli/parser.rb', line 394

def named_args(type = nil, number: nil, min: nil, max: nil)
  if number.present? && (min.present? || max.present?)
    raise ArgumentError, "Do not specify both `number` and `min` or `max`"
  end

  if type == :none && (number.present? || min.present? || max.present?)
    raise ArgumentError, "Do not specify both `number`, `min` or `max` with `named_args :none`"
  end

  @named_args_type = type

  if type == :none
    @max_named_args = 0
  elsif number.present?
    @min_named_args = @max_named_args = number
  elsif min.present? || max.present?
    @min_named_args = min
    @max_named_args = max
  end
end

#option_description(description, *names, hidden: false) ⇒ Object 



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# File 'cli/parser.rb', line 255

def option_description(description, *names, hidden: false)
  return HIDDEN_DESC_PLACEHOLDER if hidden
  return description if description.present?

  option_to_description(*names)
end

#option_to_description(*names) ⇒ Object 



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# File 'cli/parser.rb', line 251

def option_to_description(*names)
  names.map { |name| name.to_s.sub(/\A--?/, "").tr("-", " ") }.max
end

#option_to_name(option) ⇒ Object 



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# File 'cli/parser.rb', line 237

def option_to_name(option)
  option.sub(/\A--?(\[no-\])?/, "")
        .tr("-", "_")
        .delete("=")
end

#parse(argv = ARGV.freeze, ignore_invalid_options: false) ⇒ Args

Parameters:

  • argv (Array<String>) (defaults to: ARGV.freeze)
  • ignore_invalid_options (Boolean) (defaults to: false)

Returns:



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# File 'cli/parser.rb', line 298

def parse(argv = ARGV.freeze, ignore_invalid_options: false)
  raise "Arguments were already parsed!" if @args_parsed

  # If we accept formula options, parse once allowing invalid options
  # so we can get the remaining list containing formula names.
  if @formula_options
    remaining, non_options = parse_remaining(argv, ignore_invalid_options: true)

    argv = [*remaining, "--", *non_options]

    formulae(argv).each do |f|
      next if f.options.empty?

      f.options.each do |o|
        name = o.flag
        description = "`#{f.name}`: #{o.description}"
        if name.end_with? "="
          flag   name, description: description
        else
          switch name, description: description
        end

        conflicts "--cask", name
      end
    end
  end

  remaining, non_options = parse_remaining(argv, ignore_invalid_options: ignore_invalid_options)

  named_args = if ignore_invalid_options
    []
  else
    remaining + non_options
  end

  unless ignore_invalid_options
    unless @is_dev_cmd
      set_default_options
      validate_options
    end
    check_constraint_violations
    check_named_args(named_args)
  end

  @args.freeze_named_args!(named_args, cask_options: @cask_options)
  @args.freeze_remaining_args!(non_options.empty? ? remaining : [*remaining, "--", non_options])
  @args.freeze_processed_options!(@processed_options)
  @args.freeze

  @args_parsed = true

  if !ignore_invalid_options && @args.help?
    puts generate_help_text
    exit
  end

  @args
end

#parse_remaining(argv, ignore_invalid_options: false) ⇒ Object 



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# File 'cli/parser.rb', line 262

def parse_remaining(argv, ignore_invalid_options: false)
  i = 0
  remaining = []

  argv, non_options = split_non_options(argv)
  allow_commands = Array(@named_args_type).include?(:command)

  while i < argv.count
    begin
      begin
        arg = argv[i]

        remaining << arg unless @parser.parse([arg]).empty?
      rescue OptionParser::MissingArgument
        raise if i + 1 >= argv.count

        args = argv[i..(i + 1)]
        @parser.parse(args)
        i += 1
      end
    rescue OptionParser::InvalidOption
      if ignore_invalid_options || (allow_commands && Commands.path(arg))
        remaining << arg
      else
        $stderr.puts generate_help_text
        raise
      end
    end

    i += 1
  end

  [remaining, non_options]
end

#set_default_options ⇒ Object 



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# File 'extend/os/linux/parser.rb', line 10

def set_default_options
  @args["formula?"] = true if @args.respond_to?(:formula?)
end

#switch(*names, description: nil, replacement: nil, env: nil, depends_on: nil, method: :on, hidden: false) ⇒ Object Also known as: switch_option 



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# File 'cli/parser.rb', line 152

def switch(*names, description: nil, replacement: nil, env: nil, depends_on: nil,
           method: :on, hidden: false)
  global_switch = names.first.is_a?(Symbol)
  return if global_switch

  description = option_description(description, *names, hidden: hidden)
  if replacement.nil?
    process_option(*names, description, type: :switch, hidden: hidden)
  else
    description += " (disabled#{"; replaced by #{replacement}" if replacement.present?})"
  end
  @parser.public_send(method, *names, *wrap_option_desc(description)) do |value|
    odisabled "the `#{names.first}` switch", replacement unless replacement.nil?
    value = true if names.none? { |name| name.start_with?("--[no-]") }

    set_switch(*names, value: value, from: :args)
  end

  names.each do |name|
    set_constraints(name, depends_on: depends_on)
  end

  env_value = env?(env)
  set_switch(*names, value: env_value, from: :env) unless env_value.nil?
end

#usage_banner(text) ⇒ Object 



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# File 'cli/parser.rb', line 191

def usage_banner(text)
  @usage_banner, @description = text.chomp.split("\n\n", 2)
end

#usage_banner_text ⇒ Object 



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# File 'cli/parser.rb', line 195

def usage_banner_text
  @parser.banner
end

#validate_options ⇒ Object 



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# File 'extend/os/linux/parser.rb', line 14

def validate_options
  return unless @args.respond_to?(:cask?)
  return unless @args.cask?

  # NOTE: We don't raise an error here because we don't want
  # to print the help page or a stack trace.
  odie "Invalid `--cask` usage: Casks do not work on Linux"
end