中文转数字.ts

const nums = {
  '零': 0,
  '壹': 1,
  '贰': 2,
  '叁': 3,
  '肆': 4,
  '伍': 5,
  '陆': 6,
  '柒': 7,
  '捌': 8,
  '玖': 9,
}
const units = {
  '拾': 10,
  '佰': 100,
  '仟': 1000,
  '万': 10000,
  '亿': 100000000,
  '角': 0.1,
  '分': 0.01,
  '元': 1,
  '整': 0,
}

const cnToNum = (cn: string): number => {
  let num = 0
  cn = cn.replace(/\s/g, '')
  let i = 0
  let isNum = false
  let n = 0
  let sep = 0
  while (i < cn.length) {
    const c = cn[i]
    i++
    if (c in nums) {
      n = nums[c]
      if (n === 0) {
        continue
      }
      if (isNum) {
        throw new Error(`${cn[i - 1]} cannot after ${cn[i - 2]}`)
      }
      isNum = true
      continue
    }
    if (!(c in units)) {
      throw new Error('cannot found ' + c)
    }
    isNum = false
    console.log(n, units[c], c)
    if (units[c] === 0) {
      continue
    }
    if (['万','亿','元','角','分'].includes(c)) {
      sep += n
      num = (num * 100 + (sep * units[c] * 100)) / 100
      sep = 0
    } else {
      sep += n * units[c]
      n = 0
    }
    console.log(num)
  }
  return num
}

console.log(cnToNum('叁佰贰拾贰亿贰仟玖佰叁拾万零捌佰贰拾壹元贰角叁分'))