hashion/dist/sha.js

计算文件hash

var z = Object.defineProperty;
var U = (e, r, t) => r in e ? z(e, r, { enumerable: !0, configurable: !0, writable: !0, value: t }) : e[r] = t;
var s = (e, r, t) => U(e, typeof r != "symbol" ? r + "" : r, t);
class p {
  constructor(r) {
    s(this, "algorithm");
    s(this, "name");
    this.algorithm = (r == null ? void 0 : r.algorithm) || "SHA-256", this.name = "SHA";
  }
  computeHash(r, t) {
    const { file: f, chunkSize: u } = r, h = f.size, a = new FileReader(), b = Date.now(), g = Math.ceil(h / u);
    let i = 0, d = !1, m = 0;
    const w = new ArrayBuffer(h), H = new Uint8Array(w), A = new AbortController(), l = A.signal;
    l.addEventListener("abort", () => {
      d || (a.abort(), t(new Error("Hash calculation cancelled"), { progress: 0 }));
    });
    function y() {
      if (l.aborted) return;
      const n = i * u, c = Math.min(n + u, h), o = f.slice(n, c);
      a.readAsArrayBuffer(o);
    }
    return a.onload = async (n) => {
      var c;
      if (!l.aborted)
        try {
          const o = new Uint8Array((c = n.target) == null ? void 0 : c.result);
          if (H.set(o, m), m += o.length, i++, i < g)
            y(), t(null, {
              progress: i / g * 100
            });
          else {
            const S = await crypto.subtle.digest(this.algorithm, w), B = Array.from(new Uint8Array(S)).map((C) => C.toString(16).padStart(2, "0")).join("");
            d = !0, t(null, {
              hash: B,
              time: Date.now() - b,
              progress: 100
            });
          }
        } catch (o) {
          t(o, { progress: 0 });
        }
    }, a.onerror = (n) => {
      l.aborted || (console.warn("SHA-256: Hash calculation error"), t(n, { progress: 0 }));
    }, y(), {
      abort: () => A.abort()
    };
  }
}
s(p, "pluginName", "hash-plugin"), s(p, "name", "SHA");
export {
  p as Sha
};