brew/Library/Homebrew/cmd/untap.rb

# typed: true
# frozen_string_literal: true

require "cli/parser"

module Homebrew
  extend T::Sig

  module_function

  sig { returns(CLI::Parser) }
  def untap_args
    Homebrew::CLI::Parser.new do
      description <<~EOS
        Remove a tapped formula repository.
      EOS
      switch "-f", "--force",
             description: "Untap even if formulae or casks from this tap are currently installed."

      named_args :tap, min: 1
    end
  end

  def untap
    args = untap_args.parse

    args.named.to_installed_taps.each do |tap|
      odie "Untapping #{tap} is not allowed" if tap.core_tap?

      installed_tap_formulae = Formula.installed.select { |formula| formula.tap == tap }
      installed_tap_casks = Cask::Caskroom.casks.select { |cask| cask.tap == tap }

      if installed_tap_formulae.present? || installed_tap_casks.present?
        installed_names = (installed_tap_formulae + installed_tap_casks.map(&:token)).join("\n")
        if args.force? || Homebrew::EnvConfig.developer?
          opoo <<~EOS
            Untapping #{tap} even though it contains the following installed formulae or casks:
            #{installed_names}
          EOS
        else
          odie <<~EOS
            Refusing to untap #{tap} because it contains the following installed formulae or casks:
            #{installed_names}
          EOS
        end
      end

      tap.uninstall manual: true
    end
  end
end