whale-plus/lib/upload-sdk/src/upload-client/split/FileChunk.js

A Component Library for Vue 3

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var SparkMD5 = require('spark-md5');

function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }

var SparkMD5__default = /*#__PURE__*/_interopDefaultLegacy(SparkMD5);

function createChunk(file, index, chunkSize) {
  const start = index * chunkSize;
  const end = Math.min(start + chunkSize, file.size);
  const blob = file.slice(start, end);
  return {
    blob,
    start,
    end,
    hash: "",
    index
  };
}
function calcChunkHash(chunk) {
  return new Promise((resolve) => {
    const spark = new SparkMD5__default["default"].ArrayBuffer();
    const fileReader = new FileReader();
    fileReader.onload = (e) => {
      var _a;
      spark.append((_a = e.target) == null ? void 0 : _a.result);
      resolve(spark.end());
    };
    fileReader.readAsArrayBuffer(chunk.blob);
  });
}
function calcChunkHashAndSparkResult(chunk) {
  return new Promise((resolve) => {
    const spark = new SparkMD5__default["default"].ArrayBuffer();
    const fileReader = new FileReader();
    fileReader.onload = (e) => {
      var _a, _b;
      spark.append((_a = e.target) == null ? void 0 : _a.result);
      resolve({
        sparkResult: (_b = e.target) == null ? void 0 : _b.result,
        hash: spark.end()
      });
    };
    fileReader.readAsArrayBuffer(chunk.blob);
  });
}

exports.calcChunkHash = calcChunkHash;
exports.calcChunkHashAndSparkResult = calcChunkHashAndSparkResult;
exports.createChunk = createChunk;
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