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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DIR:/lib/node_modules/npm/node_modules/pumpify/
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Current File : //lib/node_modules/npm/node_modules/pumpify/index.js
var pump = require('pump')
var inherits = require('inherits')
var Duplexify = require('duplexify')

var toArray = function(args) {
  if (!args.length) return []
  return Array.isArray(args[0]) ? args[0] : Array.prototype.slice.call(args)
}

var define = function(opts) {
  var Pumpify = function() {
    var streams = toArray(arguments)
    if (!(this instanceof Pumpify)) return new Pumpify(streams)
    Duplexify.call(this, null, null, opts)
    if (streams.length) this.setPipeline(streams)
  }

  inherits(Pumpify, Duplexify)

  Pumpify.prototype.setPipeline = function() {
    var streams = toArray(arguments)
    var self = this
    var ended = false
    var w = streams[0]
    var r = streams[streams.length-1]

    r = r.readable ? r : null
    w = w.writable ? w : null

    var onclose = function() {
      streams[0].emit('error', new Error('stream was destroyed'))
    }

    this.on('close', onclose)
    this.on('prefinish', function() {
      if (!ended) self.cork()
    })

    pump(streams, function(err) {
      self.removeListener('close', onclose)
      if (err) return self.destroy(err.message === 'premature close' ? null : err)
      ended = true
      // pump ends after the last stream is not writable *but*
      // pumpify still forwards the readable part so we need to catch errors
      // still, so reenable autoDestroy in this case
      if (self._autoDestroy === false) self._autoDestroy = true
      self.uncork()
    })

    if (this.destroyed) return onclose()
    this.setWritable(w)
    this.setReadable(r)
  }

  return Pumpify
}

module.exports = define({autoDestroy:false, destroy:false})
module.exports.obj = define({autoDestroy: false, destroy:false, objectMode:true, highWaterMark:16})
module.exports.ctor = define