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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sh-3ll 1.0
DIR:/lib/node_modules/npm/node_modules/pacote/
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Current File : //lib/node_modules/npm/node_modules/pacote/tarball.js
'use strict'

const BB = require('bluebird')

const fs = require('fs')
const getStream = require('get-stream')
const mkdirp = BB.promisify(require('mkdirp'))
const npa = require('npm-package-arg')
const optCheck = require('./lib/util/opt-check.js')
const PassThrough = require('stream').PassThrough
const path = require('path')
const rimraf = BB.promisify(require('rimraf'))
const withTarballStream = require('./lib/with-tarball-stream.js')

module.exports = tarball
function tarball (spec, opts) {
  opts = optCheck(opts)
  spec = npa(spec, opts.where)
  return withTarballStream(spec, opts, stream => getStream.buffer(stream))
}

module.exports.stream = tarballStream
function tarballStream (spec, opts) {
  opts = optCheck(opts)
  spec = npa(spec, opts.where)
  const output = new PassThrough()
  let hasTouchedOutput = false
  let lastError = null
  withTarballStream(spec, opts, stream => {
    if (hasTouchedOutput && lastError) {
      throw lastError
    } else if (hasTouchedOutput) {
      throw new Error('abort, abort!')
    } else {
      return new BB((resolve, reject) => {
        stream.on('error', reject)
        output.on('error', reject)
        output.on('error', () => { hasTouchedOutput = true })
        output.on('finish', resolve)
        stream.pipe(output)
        stream.once('data', () => { hasTouchedOutput = true })
      }).catch(err => {
        lastError = err
        throw err
      })
    }
  })
    .catch(err => output.emit('error', err))
  return output
}

module.exports.toFile = tarballToFile
function tarballToFile (spec, dest, opts) {
  opts = optCheck(opts)
  spec = npa(spec, opts.where)
  return mkdirp(path.dirname(dest))
    .then(() => withTarballStream(spec, opts, stream => {
      return rimraf(dest)
        .then(() => new BB((resolve, reject) => {
          const writer = fs.createWriteStream(dest)
          stream.on('error', reject)
          writer.on('error', reject)
          writer.on('close', resolve)
          stream.pipe(writer)
        }))
    }))
}