mooncake-cli/commander/index.js

const fs = require('fs')
const path = require('path')
const os = require('os')

const copyFile = function(srcPath, tarPath, cb) {
  const rs = fs.createReadStream(srcPath)
  rs.on('error', function(err) {
    if (err) {
      console.log('read error', srcPath)
    }
    cb && cb(err)
  })

  const ws = fs.createWriteStream(tarPath)
  ws.on('error', function(err) {
    if (err) {
      console.log('write error', tarPath)
    }
    cb && cb(err)
  })
  ws.on('close', function(ex) {
    cb && cb(ex)
  })

  rs.pipe(ws)
}

const copyTempalte = function(srcDir, tarDir, cb) {
  fs.readdir(srcDir, function(err, files) {
    let count = 0
    const checkEnd = function() {
      ++count == files.length && cb && cb()
    }

    if (err) {
      checkEnd()
      return
    }

    files.forEach(function(file) {
      const srcPath = path.join(srcDir, file)
      const tarPath = path.join(tarDir, file)

      fs.stat(srcPath, function(err, stats) {
        if (stats.isDirectory()) {
          fs.mkdir(tarPath, function(err) {
            if (err) {
              console.log(err)
              return
            }

            copyTempalte(srcPath, tarPath, checkEnd)
          })
        } else {
          copyFile(srcPath, tarPath, checkEnd)
        }
      })
    })

    //为空时直接回调
    files.length === 0 && cb && cb()
  })
}

const newPage = function(pageName, cb) {
  const tarDir = path.join(process.cwd(), 'src/pages', pageName)
  fs.mkdir(tarDir, function(err) {
    if (err) {
      console.log(err)
      return
    }
    copyTempalte(path.join(__dirname, '../template/src/pages/index'), tarDir, cb)
  })
}

const ip = () => {
  const ifaces = os.networkInterfaces()
  const ips = []
  for (const dev in ifaces) {
    ifaces[dev].forEach(function(details) {
      if (details.family === 'IPv6' || details.address == '127.0.0.1') return
      ips.push(details.address)
    })
  }
  return ips[0]
};


exports.copyTempalte = copyTempalte
exports.newPage = newPage
exports.ip = ip