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Filename : check_command.rb
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# frozen_string_literal: true

require_relative "../command"
require_relative "../version_option"
require_relative "../validator"
require_relative "../doctor"

class Gem::Commands::CheckCommand < Gem::Command
  include Gem::VersionOption

  def initialize
    super "check", "Check a gem repository for added or missing files",
          alien: true, doctor: false, dry_run: false, gems: true

    add_option("-a", "--[no-]alien",
               'Report "unmanaged" or rogue files in the',
               "gem repository") do |value, options|
      options[:alien] = value
    end

    add_option("--[no-]doctor",
               "Clean up uninstalled gems and broken",
               "specifications") do |value, options|
      options[:doctor] = value
    end

    add_option("--[no-]dry-run",
               "Do not remove files, only report what",
               "would be removed") do |value, options|
      options[:dry_run] = value
    end

    add_option("--[no-]gems",
               "Check installed gems for problems") do |value, options|
      options[:gems] = value
    end

    add_version_option "check"
  end

  def check_gems
    say "Checking gems..."
    say
    gems = begin
             get_all_gem_names
           rescue StandardError
             []
           end

    Gem::Validator.new.alien(gems).sort.each do |key, val|
      if val.empty?
        say "#{key} is error-free" if Gem.configuration.verbose
      else
        say "#{key} has #{val.size} problems"
        val.each do |error_entry|
          say "  #{error_entry.path}:"
          say "    #{error_entry.problem}"
        end
      end
      say
    end
  end

  def doctor
    say "Checking for files from uninstalled gems..."
    say

    Gem.path.each do |gem_repo|
      doctor = Gem::Doctor.new gem_repo, options[:dry_run]
      doctor.doctor
    end
  end

  def execute
    check_gems if options[:gems]
    doctor if options[:doctor]
  end

  def arguments # :nodoc:
    "GEMNAME       name of gem to check"
  end

  def defaults_str # :nodoc:
    "--gems --alien"
  end

  def description # :nodoc:
    <<-EOF
The check command can list and repair problems with installed gems and
specifications and will clean up gems that have been partially uninstalled.
    EOF
  end

  def usage # :nodoc:
    "#{program_name} [OPTIONS] [GEMNAME ...]"
  end
end