GeneralPurposeBitFlag.php
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<?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
}