Again adding nelexa's zip library

SafeBoxEncryptor/vendor/nelexa/zip/src/Constants/GeneralPurposeBitFlag.php

@@ -0,0 +1,71 @@
+<?php
+
+namespace PhpZip\Constants;
+
+/**
+ * General purpose bit flag constants.
+ */
+interface GeneralPurposeBitFlag
+{
+    /**
+     * General Purpose Bit Flag mask for encrypted data.
+     * Bit 0: If set, indicates that the file is encrypted.
+     */
+    const ENCRYPTION = 1; // 1 << 0
+
+    /**
+     * Compression Flag Bit 1 for method Deflating.
+     *
+     * Bit 2  Bit 1
+     * 0      0    Normal compression
+     * 0      1    Maximum compression
+     * 1      0    Fast compression
+     * 1      1    Super Fast compression
+     *
+     * @see GeneralPurposeBitFlag::COMPRESSION_FLAG2
+     */
+    const COMPRESSION_FLAG1 = 2; // 1 << 1
+
+    /**
+     * Compression Flag Bit 2 for method Deflating.
+     *
+     * Bit 2  Bit 1
+     * 0      0    Normal compression
+     * 0      1    Maximum compression
+     * 1      0    Fast compression
+     * 1      1    Super Fast compression
+     *
+     * @see GeneralPurposeBitFlag::COMPRESSION_FLAG1
+     */
+    const COMPRESSION_FLAG2 = 4; // 1 << 2
+
+    /**
+     * General Purpose Bit Flag mask for data descriptor.
+     *
+     * Bit 3: If this bit is set, the fields crc-32, compressed
+     * size and uncompressed size are set to zero in the
+     * local header. The correct values are put in the data
+     * descriptor immediately following the compressed data.
+     */
+    const DATA_DESCRIPTOR = 8; // 1 << 3
+
+    /**
+     * General Purpose Bit Flag mask for strong encryption.
+     *
+     * Bit 6: Strong encryption.
+     * If this bit is set, you MUST set the version needed to extract
+     * value to at least 50 and you MUST also set bit 0.
+     * If AES encryption is used, the version needed to extract value
+     * MUST be at least 51.
+     */
+    const STRONG_ENCRYPTION = 64; // 1 << 6
+
+    /**
+     * General Purpose Bit Flag mask for UTF-8.
+     *
+     * Bit 11: Language encoding flag (EFS).
+     * If this bit is set, the filename and comment fields
+     * for this file MUST be encoded using UTF-8. (see APPENDIX D)
+     */
+    const UTF8 = 2048; // 1 << 11
+}