mirror of https://github.com/vitalif/zbackup
47 lines
984 B
C++
47 lines
984 B
C++
// Copyright (c) 2012-2013 Konstantin Isakov <ikm@zbackup.org>
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// Part of ZBackup. Licensed under GNU GPLv2 or later
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#include "chunk_id.hh"
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#include <string.h>
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#include "endian.hh"
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#include "check.hh"
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string ChunkId::toBlob() const
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{
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string out( BlobSize, 0 );
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toBlob( &out[ 0 ] );
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return out;
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}
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void ChunkId::toBlob( void * outPtr ) const
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{
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char * out = ( char * ) outPtr;
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RollingHash::Digest v = toLittleEndian( rollingHash );
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memcpy( out, cryptoHash, sizeof( cryptoHash ) );
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memcpy( out + sizeof( cryptoHash ), &v, sizeof( v ) );
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}
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void ChunkId::setFromBlob( void const * data )
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{
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char const * blob = ( char const * ) data;
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RollingHash::Digest v;
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memcpy( cryptoHash, blob, sizeof( cryptoHash ) );
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memcpy( &v, blob + sizeof( cryptoHash ), sizeof( v ) );
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rollingHash = fromLittleEndian( v );
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}
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ChunkId::ChunkId( string const & blob )
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{
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CHECK( blob.size() == BlobSize, "incorrect blob sise: %zu", blob.size() );
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setFromBlob( blob.data() );
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}
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