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// Copyright (c) 2012-2014 Konstantin Isakov <ikm@zbackup.org>
// Part of ZBackup. Licensed under GNU GPLv2 or later + OpenSSL, see LICENSE
#include "chunk_id.hh"
#include <string.h>
#include "endian.hh"
#include "check.hh"
string ChunkId::toBlob() const
{
string out( BlobSize, 0 );
toBlob( &out[ 0 ] );
return out;
}
void ChunkId::toBlob( void * outPtr ) const
{
char * out = ( char * ) outPtr;
RollingHash::Digest v = toLittleEndian( rollingHash );
memcpy( out, cryptoHash, sizeof( cryptoHash ) );
memcpy( out + sizeof( cryptoHash ), &v, sizeof( v ) );
}
void ChunkId::setFromBlob( void const * data )
{
char const * blob = ( char const * ) data;
RollingHash::Digest v;
memcpy( cryptoHash, blob, sizeof( cryptoHash ) );
memcpy( &v, blob + sizeof( cryptoHash ), sizeof( v ) );
rollingHash = fromLittleEndian( v );
}
ChunkId::ChunkId( string const & blob )
{
CHECK( blob.size() == BlobSize, "incorrect blob sise: %zu", blob.size() );
setFromBlob( blob.data() );
}
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