hashion/dist/spark.js

计算文件hash

var b = Object.defineProperty;
var y = (n, e, r) => e in n ? b(n, e, { enumerable: !0, configurable: !0, writable: !0, value: r }) : n[e] = r;
var u = (n, e, r) => y(n, typeof e != "symbol" ? e + "" : e, r);
import k from "spark-md5";
const z = File.prototype.slice || File.prototype.mozSlice || File.prototype.webkitSlice;
class g {
  constructor() {
    u(this, "name");
    this.name = "spark-md5";
  }
  async computeHash(e, r) {
    const { file: o, chunkSize: s } = e;
    let p = !1;
    const d = new k.ArrayBuffer(), a = new FileReader(), f = Math.ceil(o.size / s), w = Date.now();
    let i = 0;
    const m = new AbortController(), l = m.signal;
    l.addEventListener("abort", () => {
      p || (a.abort(), r(new Error("Hash calculation cancelled"), { progress: 0 }));
    }), a.onload = function(t) {
      var c;
      if (!l.aborted)
        if (d.append((c = t.target) == null ? void 0 : c.result), i++, i < f)
          h(), r(null, {
            progress: i / f * 100
          });
        else {
          p = !0, r(null, {
            hash: d.end(),
            time: Date.now() - w,
            progress: 100
          });
          return;
        }
    }, a.onerror = function(t) {
      l.aborted || (console.warn("spark-md5: Hash calculation error"), r(t, { progress: 0 }));
    };
    function h() {
      if (l.aborted) return;
      const t = i * s, c = t + s >= o.size ? o.size : t + s;
      a.readAsArrayBuffer(z.call(o, t, c));
    }
    return h(), {
      abort: () => m.abort()
    };
  }
}
u(g, "pluginName", "hash-plugin"), u(g, "name", "spark-md5");
export {
  g as Spark
};