@xyezir/vux-loader/src/libs/get-less-variables.js

extended loader for vux

'use strict'
const fs = require('fs')
const path = require('path')
const stripeComments = require('strip-css-comments')

module.exports = function getLessVariables(theme) {
  return getContent(theme)
}


function trim (str) {
  if (!str) {
    return ''
  } else {
    return str.replace(/^\s+|\s+$/g, '')
  }
}

function getContent (file) {
  let themeContent = fs.readFileSync(file, 'utf-8')
  themeContent = stripeComments(themeContent)
  var variables = {}
  themeContent.split('\n').forEach(function (item) {
    if (trim(item).indexOf('//') === 0 || trim(item).indexOf('/*') === 0) {
      return
    }

    // has comments
    if (item.indexOf('//') > 0) {
      item = trim(item.slice(0, item.indexOf('//')))
    }
    if (item.indexOf('/*') > 0) {
      item = trim(item.slice(0, item.indexOf('/*')))
    }

    var _pair = item.split(':')

    if (_pair.length < 2) {
      if (!/@import/.test(_pair[0])) {
        return
      }
      let partFile = _pair[0]
      .replace(/;/g, '')
      .replace('@import', '')
      .replace(/'/g, '')
      .replace(/"/g, '')
      .replace(/\s+/g, '').trim()
      const partPath = path.resolve(path.dirname(file), partFile)
      let partVariables = getContent(partPath)
      for (let i in partVariables) {
        variables[i] = partVariables[i]
      }
    } else {
      let key = _pair[0].replace('\r', '').replace('@', '')
      if (!key) return;
      key = key.trim()
      if (!/^[A-Za-z0-9_-]*$/.test(key)) {
        console.log(`[vux-loader] 疑似不合法命名，将被忽略：${key}`)
        return
      }
      var value = _pair[1].replace(';', '').replace('\r', '').replace(/^\s+|\s+$/g, '')
      variables[key] = value
    }

  })
  return variables
}