v5.0.9: ZIP модуль вынесен в site/static/zip.js, тесты test_zip.py (28 тестов), исправлен баг смещения start+18

site/templates/index.html

@@ -8,6 +8,7 @@
   <meta http-equiv="Expires" content="0">
   <title>DrHider — обфускация документов</title>
   <link rel="icon" type="image/svg+xml" href="/static/favicon.svg">
+  <script src="/static/zip.js"></script>
   <style>
     :root {
       --brand-primary: #2563eb;
@@ -151,48 +152,6 @@ function ts() {
 
 function ss(idx, h) { const e = document.getElementById('st-' + idx); if (e) e.innerHTML = h; }
 
-// ═══════════ Нативный ZIP (без внешних библиотек) ═══════════
-
-async function unzip(zb) {
-  const buf = await zb.arrayBuffer(); const dv = new DataView(buf);
-  const files = {}; let pos = 0;
-  while (pos < buf.byteLength - 4) {
-    const sig = dv.getUint32(pos, true);
-    if (sig === 0x04034b50) {
-      const start = pos; // Начало local file header
-      pos += 26;
-      const nl = dv.getUint16(pos, true); pos += 2;
-      const el = dv.getUint16(pos, true); pos += 2;
-      const nm = new TextDecoder().decode(new Uint8Array(buf, pos, nl)); pos += nl + el;
-      const cs = dv.getUint32(start + 18, true); // compressed size at offset 18
-      files[nm] = new Blob([new Uint8Array(buf, pos, cs)]); pos += cs;
-    } else break;
-  }
-  return files;
-}
-
-async function buildZip(entries) {
-  const parts = []; const cd = []; let off = 0;
-  for (const e of entries) {
-    const d = new Uint8Array(await e.data.arrayBuffer());
-    const nm = new TextEncoder().encode(e.name);
-    const lh = new Uint8Array(30 + nm.length); const lv = new DataView(lh.buffer);
-    lv.setUint32(0, 0x04034b50, true); lv.setUint16(6, 0x800, true);
-    lv.setUint32(18, d.length, true); lv.setUint32(22, d.length, true);
-    lv.setUint16(26, nm.length, true); lh.set(nm, 30); parts.push(lh, d);
-    const ce = new Uint8Array(46 + nm.length); const cv = new DataView(ce.buffer);
-    cv.setUint32(0, 0x02014b50, true); cv.setUint16(8, 0x800, true);
-    cv.setUint32(20, d.length, true); cv.setUint32(24, d.length, true);
-    cv.setUint16(28, nm.length, true); cv.setUint32(42, off, true); ce.set(nm, 46); cd.push(ce);
-    off += 30 + nm.length + d.length;
-  }
-  const cs = cd.reduce((s, c) => s + c.length, 0);
-  const eo = new Uint8Array(22); const ev = new DataView(eo.buffer);
-  ev.setUint32(0, 0x06054b50, true); ev.setUint16(8, entries.length, true);
-  ev.setUint16(10, entries.length, true); ev.setUint32(12, cs, true); ev.setUint32(16, off, true);
-  return new Blob([...parts, ...cd, eo], { type: 'application/zip' });
-}
-
 async function uploadFiles() {
   if (sf.length === 0) return;
   ub.disabled = true;