RARTemplate.bt

typedef enum<ushort> {
    MHD_VOLUME          = 0x0001,
    MHD_COMMENT         = 0x0002,
    MHD_LOCK            = 0x0004,
    MHD_SOLID           = 0x0008,
    MHD_PACK_COMMENT    = 0x0010,
    MHD_AV              = 0x0020,
    MHD_PROTECT         = 0x0040,
    MHD_PASSWORD        = 0x0080,
    MHD_FIRSTVOLUME     = 0x0100,
    MHD_ENCRYPTVER      = 0x0200,
} MHDFLAGS;

typedef enum<ushort> {
    LHD_SPLIT_BEFORE    = 0x0001,
    LHD_SPLIT_AFTER     = 0x0002,
    LHD_PASSWORD        = 0x0004,
    LHD_COMMENT         = 0x0008,
    LHD_SOLID           = 0x0010,
    LHD_LARGE           = 0x0100,
    LHD_UNICODE         = 0x0200,
    LHD_SALT            = 0x0400,
    LHD_VERSION         = 0x0800,
    LHD_EXTTIME         = 0x1000,
    LHD_EXTFLAGS        = 0x2000,
} LHDFLAGS;

typedef struct _VOLUMEHDR {
    ushort  header_crc;
    uchar   header_type;
    ushort  header_flags;
    ushort  header_size;
} VOLUMEHDR;

typedef struct _MAINHDR {
    ushort  HighPosAv;
    uint    PosAv; 
} MAINHDR;

typedef struct _FILEHDR {
    uint    PackSize;
    uint    UnpSize;
    uchar   HostOS;
    uint    FileCRC;
    uint    FileTime;
    uchar   UnpVer;
    uchar   Method;
    ushort  NameSize;
    uint    FileAttr;
} FILEHDR;

typedef struct  _PACKED {
    uint    PpmBlock    : 1;
    uint    KeepTables  : 1;
    // A canonical huffman tree
    // ...
} PACKED;

uchar signature[7];
VOLUMEHDR VolMainHeader;
VOLUMEHDR VolFileHeader;
FILEHDR FileHeader;