晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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# frozen_string_literal: true

require "rubygems/dependency"
require "bundler/shared_helpers"
require "bundler/rubygems_ext"

module Bundler
  class Dependency < Gem::Dependency
    attr_reader :autorequire
    attr_reader :groups, :platforms, :gemfile

    PLATFORM_MAP = {
      :ruby     => Gem::Platform::RUBY,
      :ruby_18  => Gem::Platform::RUBY,
      :ruby_19  => Gem::Platform::RUBY,
      :ruby_20  => Gem::Platform::RUBY,
      :ruby_21  => Gem::Platform::RUBY,
      :ruby_22  => Gem::Platform::RUBY,
      :ruby_23  => Gem::Platform::RUBY,
      :ruby_24  => Gem::Platform::RUBY,
      :ruby_25  => Gem::Platform::RUBY,
      :mri      => Gem::Platform::RUBY,
      :mri_18   => Gem::Platform::RUBY,
      :mri_19   => Gem::Platform::RUBY,
      :mri_20   => Gem::Platform::RUBY,
      :mri_21   => Gem::Platform::RUBY,
      :mri_22   => Gem::Platform::RUBY,
      :mri_23   => Gem::Platform::RUBY,
      :mri_24   => Gem::Platform::RUBY,
      :mri_25   => Gem::Platform::RUBY,
      :rbx      => Gem::Platform::RUBY,
      :truffleruby => Gem::Platform::RUBY,
      :jruby    => Gem::Platform::JAVA,
      :jruby_18 => Gem::Platform::JAVA,
      :jruby_19 => Gem::Platform::JAVA,
      :mswin    => Gem::Platform::MSWIN,
      :mswin_18 => Gem::Platform::MSWIN,
      :mswin_19 => Gem::Platform::MSWIN,
      :mswin_20 => Gem::Platform::MSWIN,
      :mswin_21 => Gem::Platform::MSWIN,
      :mswin_22 => Gem::Platform::MSWIN,
      :mswin_23 => Gem::Platform::MSWIN,
      :mswin_24 => Gem::Platform::MSWIN,
      :mswin_25 => Gem::Platform::MSWIN,
      :mswin64    => Gem::Platform::MSWIN64,
      :mswin64_19 => Gem::Platform::MSWIN64,
      :mswin64_20 => Gem::Platform::MSWIN64,
      :mswin64_21 => Gem::Platform::MSWIN64,
      :mswin64_22 => Gem::Platform::MSWIN64,
      :mswin64_23 => Gem::Platform::MSWIN64,
      :mswin64_24 => Gem::Platform::MSWIN64,
      :mswin64_25 => Gem::Platform::MSWIN64,
      :mingw    => Gem::Platform::MINGW,
      :mingw_18 => Gem::Platform::MINGW,
      :mingw_19 => Gem::Platform::MINGW,
      :mingw_20 => Gem::Platform::MINGW,
      :mingw_21 => Gem::Platform::MINGW,
      :mingw_22 => Gem::Platform::MINGW,
      :mingw_23 => Gem::Platform::MINGW,
      :mingw_24 => Gem::Platform::MINGW,
      :mingw_25 => Gem::Platform::MINGW,
      :x64_mingw    => Gem::Platform::X64_MINGW,
      :x64_mingw_20 => Gem::Platform::X64_MINGW,
      :x64_mingw_21 => Gem::Platform::X64_MINGW,
      :x64_mingw_22 => Gem::Platform::X64_MINGW,
      :x64_mingw_23 => Gem::Platform::X64_MINGW,
      :x64_mingw_24 => Gem::Platform::X64_MINGW,
      :x64_mingw_25 => Gem::Platform::X64_MINGW,
    }.freeze

    REVERSE_PLATFORM_MAP = {}.tap do |reverse_platform_map|
      PLATFORM_MAP.each do |key, value|
        reverse_platform_map[value] ||= []
        reverse_platform_map[value] << key
      end

      reverse_platform_map.each {|_, platforms| platforms.freeze }
    end.freeze

    def initialize(name, version, options = {}, &blk)
      type = options["type"] || :runtime
      super(name, version, type)

      @autorequire    = nil
      @groups         = Array(options["group"] || :default).map(&:to_sym)
      @source         = options["source"]
      @platforms      = Array(options["platforms"])
      @env            = options["env"]
      @should_include = options.fetch("should_include", true)
      @gemfile        = options["gemfile"]

      @autorequire = Array(options["require"] || []) if options.key?("require")
    end

    # Returns the platforms this dependency is valid for, in the same order as
    # passed in the `valid_platforms` parameter
    def gem_platforms(valid_platforms)
      return valid_platforms if @platforms.empty?

      @gem_platforms ||= @platforms.map {|pl| PLATFORM_MAP[pl] }.compact.uniq

      valid_platforms & @gem_platforms
    end

    def should_include?
      @should_include && current_env? && current_platform?
    end

    def current_env?
      return true unless @env
      if @env.is_a?(Hash)
        @env.all? do |key, val|
          ENV[key.to_s] && (val.is_a?(String) ? ENV[key.to_s] == val : ENV[key.to_s] =~ val)
        end
      else
        ENV[@env.to_s]
      end
    end

    def current_platform?
      return true if @platforms.empty?
      @platforms.any? do |p|
        Bundler.current_ruby.send("#{p}?")
      end
    end

    def to_lock
      out = super
      out << "!" if source
      out << "\n"
    end

    def specific?
      super
    rescue NoMethodError
      requirement != ">= 0"
    end
  end
end