mirror of https://github.com/ecmwf/eccodes.git
68 lines
2.3 KiB
Modula-2
68 lines
2.3 KiB
Modula-2
# http://www.hdfgroup.org/HDF5/doc/H5.format.html#Superblock
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constant identifier="HDF5";
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ascii[8] signature : dump;
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uint8 versionNumberOfSuperblock : dump;
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if (versionNumberOfSuperblock == 0 || versionNumberOfSuperblock == 1)
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{
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uint8 versionNumOfFilesFreeSpaceStorage : dump;
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uint8 versionNumOfRootGroupSymbolTableEntry : dump;
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uint8 reserved1;
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uint8 versionNumOfSharedHeaderMessageFormat: dump;
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uint8 sizeOfOffsets : dump;
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uint8 sizeOfLength : dump;
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uint8 reserved2;
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#uint32_little_endian groupLeafAndInternalNodeK : dump;
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#uint32_little_endian fileConsistencyFlags : dump;
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#unsigned[4] groupLeafAndInternalNodeK : dump;
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unsigned[2] groupLeafNodeK : dump;
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unsigned[2] groupInternalNodeK : dump;
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unsigned[4] fileConsistencyFlags : dump;
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if (versionNumberOfSuperblock == 1) {
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uint16 indexedStorageInternalNodeK : dump;
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uint16 reserved3;
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}
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if(sizeOfOffsets == 8) {
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uint64_little_endian baseAddress : dump;
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uint64_little_endian addressOfFileFreeSpaceInfo : dump;
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uint64_little_endian endOfFileAddress : dump;
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uint64_little_endian driverInformationBlockAddress : dump;
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uint64_little_endian rootGroupSymbolTableEntry: dump;
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}
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if(sizeOfOffsets == 4) {
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uint32_little_endian baseAddress : dump;
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uint32_little_endian addressOfFileFreeSpaceInfo : dump;
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uint32_little_endian endOfFileAddress : dump;
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uint32_little_endian driverInformationBlockAddress : dump;
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uint32_little_endian rootGroupSymbolTableEntry: dump;
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}
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}
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if (versionNumberOfSuperblock == 2 || versionNumberOfSuperblock == 3)
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{
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uint8 sizeOfOffsets : dump;
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uint8 sizeOfLength : dump;
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uint8 fileConsistencyFlags : dump;
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if(sizeOfOffsets == 8) {
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uint64_little_endian baseAddress : dump;
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uint64_little_endian superblockExtensionAddress : dump;
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uint64_little_endian endOfFileAddress : dump;
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uint64_little_endian rootGroupObjectHeaderAddress : dump;
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}
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if(sizeOfOffsets == 4) {
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uint32_little_endian baseAddress : dump;
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uint32_little_endian superblockExtensionAddress : dump;
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uint32_little_endian endOfFileAddress : dump;
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uint32_little_endian rootGroupObjectHeaderAddress : dump;
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}
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#ascii[4] superblockChecksum;
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}
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