Changeset 0.28.7 (#193)

packages/icd-test-runner/js/crud/_helpers.js

@@ -0,0 +1,110 @@
+/**
+ * ICD Test Runner — CRUD Helpers
+ * Shared utilities for CRUD tier tests (ZIP builder, etc.).
+ */
+(function () {
+  'use strict';
+  var T = window.ICD;
+  if (!T) return;
+  if (!T.crud) T.crud = {};
+
+  // ── Minimal ZIP builder (no dependencies) ──
+  // Builds a valid ZIP archive from { filename: content } pairs.
+  // Content is UTF-8 strings. Returns a Blob suitable for FormData upload.
+  var crc32Table = null;
+
+  function crc32(bytes) {
+    if (!crc32Table) {
+      crc32Table = new Uint32Array(256);
+      for (var i = 0; i < 256; i++) {
+        var c = i;
+        for (var j = 0; j < 8; j++) {
+          c = (c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1);
+        }
+        crc32Table[i] = c;
+      }
+    }
+    var crc = 0xFFFFFFFF;
+    for (var k = 0; k < bytes.length; k++) {
+      crc = crc32Table[(crc ^ bytes[k]) & 0xFF] ^ (crc >>> 8);
+    }
+    return (crc ^ 0xFFFFFFFF) >>> 0;
+  }
+
+  T.crud.buildTestZip = function (files) {
+    var encoder = new TextEncoder();
+    var entries = [];
+    var offset = 0;
+
+    // Build file entries
+    Object.keys(files).forEach(function (name) {
+      var nameBytes = encoder.encode(name);
+      var dataBytes = encoder.encode(files[name]);
+      var c = crc32(dataBytes);
+      entries.push({ name: nameBytes, data: dataBytes, crc: c, offset: offset });
+      // Local file header (30) + name + data
+      offset += 30 + nameBytes.length + dataBytes.length;
+    });
+
+    // Calculate central directory
+    var cdOffset = offset;
+    var cdSize = 0;
+    entries.forEach(function (e) { cdSize += 46 + e.name.length; });
+
+    var totalSize = cdOffset + cdSize + 22; // + EOCD
+    var buf = new ArrayBuffer(totalSize);
+    var view = new DataView(buf);
+    var pos = 0;
+
+    // Write local file headers + data
+    entries.forEach(function (e) {
+      view.setUint32(pos, 0x04034b50, true); pos += 4;   // signature
+      view.setUint16(pos, 20, true); pos += 2;            // version needed
+      view.setUint16(pos, 0, true); pos += 2;             // flags
+      view.setUint16(pos, 0, true); pos += 2;             // compression (store)
+      view.setUint16(pos, 0, true); pos += 2;             // mod time
+      view.setUint16(pos, 0, true); pos += 2;             // mod date
+      view.setUint32(pos, e.crc, true); pos += 4;         // crc32
+      view.setUint32(pos, e.data.length, true); pos += 4; // compressed size
+      view.setUint32(pos, e.data.length, true); pos += 4; // uncompressed size
+      view.setUint16(pos, e.name.length, true); pos += 2; // name length
+      view.setUint16(pos, 0, true); pos += 2;             // extra length
+      new Uint8Array(buf, pos, e.name.length).set(e.name); pos += e.name.length;
+      new Uint8Array(buf, pos, e.data.length).set(e.data); pos += e.data.length;
+    });
+
+    // Write central directory
+    entries.forEach(function (e) {
+      view.setUint32(pos, 0x02014b50, true); pos += 4;   // signature
+      view.setUint16(pos, 20, true); pos += 2;            // version made by
+      view.setUint16(pos, 20, true); pos += 2;            // version needed
+      view.setUint16(pos, 0, true); pos += 2;             // flags
+      view.setUint16(pos, 0, true); pos += 2;             // compression
+      view.setUint16(pos, 0, true); pos += 2;             // mod time
+      view.setUint16(pos, 0, true); pos += 2;             // mod date
+      view.setUint32(pos, e.crc, true); pos += 4;         // crc32
+      view.setUint32(pos, e.data.length, true); pos += 4; // compressed size
+      view.setUint32(pos, e.data.length, true); pos += 4; // uncompressed size
+      view.setUint16(pos, e.name.length, true); pos += 2; // name length
+      view.setUint16(pos, 0, true); pos += 2;             // extra length
+      view.setUint16(pos, 0, true); pos += 2;             // comment length
+      view.setUint16(pos, 0, true); pos += 2;             // disk number
+      view.setUint16(pos, 0, true); pos += 2;             // internal attrs
+      view.setUint32(pos, 0, true); pos += 4;             // external attrs
+      view.setUint32(pos, e.offset, true); pos += 4;      // local header offset
+      new Uint8Array(buf, pos, e.name.length).set(e.name); pos += e.name.length;
+    });
+
+    // Write EOCD
+    view.setUint32(pos, 0x06054b50, true); pos += 4;       // signature
+    view.setUint16(pos, 0, true); pos += 2;                // disk number
+    view.setUint16(pos, 0, true); pos += 2;                // cd start disk
+    view.setUint16(pos, entries.length, true); pos += 2;    // entries on disk
+    view.setUint16(pos, entries.length, true); pos += 2;    // total entries
+    view.setUint32(pos, cdSize, true); pos += 4;            // cd size
+    view.setUint32(pos, cdOffset, true); pos += 4;          // cd offset
+    view.setUint16(pos, 0, true);                           // comment length
+
+    return new Blob([buf], { type: 'application/zip' });
+  };
+})();