mirror of https://github.com/vitalif/zbackup
41 lines
983 B
C++
41 lines
983 B
C++
// Copyright (c) 2012-2014 Konstantin Isakov <ikm@zbackup.org> and ZBackup contributors, see CONTRIBUTORS
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// Part of ZBackup. Licensed under GNU GPLv2 or later + OpenSSL, see LICENSE
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#ifndef CHUNK_ID_HH_INCLUDED
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#define CHUNK_ID_HH_INCLUDED
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#include <string>
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#include "rolling_hash.hh"
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using std::string;
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/// Chunk is identified by its crypto hash concatenated with its rolling hash
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struct ChunkId
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{
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typedef char CryptoHashPart[ 16 ];
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CryptoHashPart cryptoHash;
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typedef RollingHash::Digest RollingHashPart;
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RollingHashPart rollingHash;
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enum
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{
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BlobSize = sizeof( CryptoHashPart ) + sizeof( RollingHashPart )
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};
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string toBlob() const;
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/// Faster version - should point to a buffer with at least BlobSize bytes
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void toBlob( void * ) const;
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/// Set the chunk id data reading from the given blob
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void setFromBlob( void const * );
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ChunkId() {}
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ChunkId( string const & blob );
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};
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bool operator <( const ChunkId &lhs, const ChunkId &rhs );
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#endif
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