webo/lib/utils.js

const path = require('path')
const semver = require('semver')
const fs = require('fs')
const crypto = require('crypto')
const { promisify } = require('util')
const glob = require('glob')

const { state } = require('./state')
const { engines } = require('../package.json')

const COLORS = { GREEN: '\x1b[32m', RED: '\x1b[31m', YELLOW: '\x1b[33m', DIM: '\x1b[2m', RESET: '\x1b[0m' }


module.exports.readFileAsync = promisify(fs.readFile)

module.exports.lstatAsync = promisify(fs.lstat)

module.exports.globAsync = promisify(glob)

module.exports.checkVersion = () => {
  if (!semver.satisfies(process.version, engines.node)) {
    console.error(`You need to install node.js version ${engines.node}`)
    process.exit(1)
  }
}

module.exports.calcHash = async (filename, length = 6) => {
  return new Promise((resolve, reject) => {
    const stream = fs.createReadStream(filename)
    const hash = crypto.createHash('sha1')
    hash.setEncoding('hex')
    stream.on('error', err => reject(err))
    stream.on('data', chunk => hash.update(chunk))
    stream.on('end', () => resolve(hash.digest('hex').substring(0, length)))
  })
}

module.exports.injectHash = (filename, hash) => {
  let parts = filename.split('.')
  if (parts.length < 2) return filename
  parts[parts.length - 2] += '-' + hash
  return parts.join('.')
}

module.exports.resolvePath = (referrer, rel) => {
  // if (rel.startsWith('/')) {
  //   return state.config.srcRoot + rel
  // } else {
    return path.relative('.' , path.resolve(path.dirname(referrer), rel.split('?')[0])).replace(/\\/g, '/')
  // }
}

module.exports.log = (...args) => {
  const colorKeys = Object.keys(COLORS)
  const colored = []
  let argsStr = args.join('___')
  colorKeys.forEach(clr => argsStr = argsStr.replace(new RegExp(`_${clr}_`, 'g'), COLORS[clr]))
  const time = new Date().toISOString().split('T').pop()
  console.log(`${COLORS.YELLOW}${time}${COLORS.RESET} : `, ...argsStr.split('___'), COLORS.RESET)
}


module.exports.error = function error(...args) {
  module.exports.log('_RED_', ...args)
}