dmdb/ICSharpCode.SharpZipLib/GZip/GZipConstants.cs

59 lines
1.2 KiB
C#

namespace ICSharpCode.SharpZipLib.GZip
{
/// <summary>
/// This class contains constants used for gzip.
/// </summary>
sealed public class GZipConstants
{
/// <summary>
/// Magic number found at start of GZIP header
/// </summary>
public const int GZIP_MAGIC = 0x1F8B;
/* The flag byte is divided into individual bits as follows:
bit 0 FTEXT
bit 1 FHCRC
bit 2 FEXTRA
bit 3 FNAME
bit 4 FCOMMENT
bit 5 reserved
bit 6 reserved
bit 7 reserved
*/
/// <summary>
/// Flag bit mask for text
/// </summary>
public const int FTEXT = 0x1;
/// <summary>
/// Flag bitmask for Crc
/// </summary>
public const int FHCRC = 0x2;
/// <summary>
/// Flag bit mask for extra
/// </summary>
public const int FEXTRA = 0x4;
/// <summary>
/// flag bitmask for name
/// </summary>
public const int FNAME = 0x8;
/// <summary>
/// flag bit mask indicating comment is present
/// </summary>
public const int FCOMMENT = 0x10;
/// <summary>
/// Initialise default instance.
/// </summary>
/// <remarks>Constructor is private to prevent instances being created.</remarks>
private GZipConstants()
{
}
}
}