first commit

2026-03-26 09:28:14 +07:00
commit fa46a144d8
20180 changed files with 2692766 additions and 0 deletions
@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace ZipStream;
+
+/**
+ * @internal
+ */
+abstract class DataDescriptor
+{
+    private const SIGNATURE = 0x08074b50;
+
+    public static function generate(
+        int $crc32UncompressedData,
+        int $compressedSize,
+        int $uncompressedSize,
+    ): string {
+        return PackField::pack(
+            new PackField(format: 'V', value: self::SIGNATURE),
+            new PackField(format: 'V', value: $crc32UncompressedData),
+            new PackField(format: 'V', value: $compressedSize),
+            new PackField(format: 'V', value: $uncompressedSize),
+        );
+    }
+}