wsemi
Version:
A support package for web developer.
52 lines (39 loc) • 1.15 kB
JavaScript
import genPm from './genPm.mjs'
import blob2ab from './blob2ab.mjs'
/**
* 前端Blob或input檔案物件轉Uint8Array資料陣列
*
* Unit Test: {@link https://github.com/yuda-lyu/wsemi/blob/master/test/blob2u8arr.test.mjs Github}
* @memberOf wsemi
* @param {Blob|File} bb 輸入Blob或File
* @returns {Promise} 回傳Promise，resolve回傳Blob或File的Uint8Array資料陣列，reject回傳錯誤訊息
* @example
* need test in browser
*
* let u8aIn = new Uint8Array([97, 98, 99, 230, 184, 172, 232, 169, 166])
* let bb = new Blob([u8aIn])
* blob2u8arr(bb)
* .then(function(u8aOut){
* console.log(u8aOut)
* // => Uint8Array(9) [97, 98, 99, 230, 184, 172, 232, 169, 166]
* })
*
*/
function blob2u8arr(bb) {
//pm
let pm = genPm()
//blob2ab
blob2ab(bb)
.then((ab) => {
//u8a
let u8a = new Uint8Array(ab)
//resolve
pm.resolve(u8a)
})
.catch((err) => {
//reject
pm.reject(err)
})
return pm
}
export default blob2u8arr