Read the concrete archive block description for details. Different archive blocks have different associated extra area record types. Not counted in Header CRC and Header size fields.Įxtra area can include one or more records having the following format: Field Used to store large data amounts, such as compressed file data. Optional data area, present only if 0x0002 header flag is set. Optional area containing additional header fields, present only if 0x0001 header flag is set. See concrete block types description for details. Optional field, present only if 0x0002 header flag is set.įields specific for current block type. Optional field, present only if 0x0001 header flag is set. Preserve a child block if host block is modified. Possible values are:Įxtra area is present in the end of header.ĭata area is present in the end of header.īlocks with unknown type and this flag must be skipped when updating an archive.ĭata area is continuing from previous volume. This field must not be longer than 3 bytes in current implementation, resulting in 2 MB maximum header size. Size of header data starting from Header type field and up to and including the optional extra area. We use 0x prefix to define hexadecimal values, such as 0xf000ĬRC32 of header data starting from Header size field and up to and including the optional extra area. byte, uint16, uint32, uint64īyte, 16-, 32-, 64- bit unsigned integer in little endian format. In such situation it can allocate more space than really necessary and then fill several leading bytes with 0x80 hexadecimal, which means 0 with continuation flag set. Sometimes RAR needs to pre-allocate space for vint before knowing its exact value. This value may be increased in the future if necessary for some reason.
#Winrar mac italiano 64 Bit#
Second byte, if present, contains next 7 bits and so on.Ĭurrently RAR format uses vint to store up to 64 bit integers, resulting in 10 bytes maximum. So first byte contains 7 least significant bits of integer and continuation flag. If highest bit is 0, this is the last byte in sequence. Can include one or more bytes, where lower 7 bits of every byte contain integer data and highest bit in every byte is the continuation flag. If you need information about algorithms or more detailed information on data structures, please use UnRAR source code.
Here we describe basic data structures of archive format introduced in RAR 5.0. Questo documento volutamente non viene tradotto in Italiano in quanto essendo il suo contenuto compostoessenzialmente da termini strettamente tecnici, una loro traduzione in Italiano comporterebbe la perdita del significato originale e un disallineamento con quanto presente nel sorgente dello scompattatore UnRAR.
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