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serialize64.cpp
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57 lines (48 loc) · 1.27 KB
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/**
* @file serialize64.cpp
* @brief 64-bit int serialization/unserialization
*
* (c) 2013-2014 by Mega Limited, Auckland, New Zealand
*
* This file is part of the MEGA SDK - Client Access Engine.
*
* Applications using the MEGA API must present a valid application key
* and comply with the the rules set forth in the Terms of Service.
*
* The MEGA SDK is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* @copyright Simplified (2-clause) BSD License.
*
* You should have received a copy of the license along with this
* program.
*/
#include "mega/serialize64.h"
namespace mega {
int Serialize64::serialize(byte* bytes, uint64_t value)
{
byte byteCount = 0;
while (value)
{
bytes[++byteCount] = (byte)value;
value >>= 8;
}
bytes[0] = byteCount;
return byteCount + 1;
}
int Serialize64::unserialize(byte* bytes, int blen, uint64_t* value)
{
byte byteCount = bytes[0];
if ((byteCount > sizeof(*value)) || (byteCount >= blen))
{
return -1;
}
*value = 0;
while (byteCount)
{
*value = (*value << 8) + bytes[(int)byteCount--];
}
return bytes[0] + 1;
}
} // namespace