size_t cmnDataDeSerializeBinary_size_t(size_t & data, const char * buffer, size_t bufferSize,
const cmnDataFormat & localFormat,
const cmnDataFormat & remoteFormat)
{
// first case, both use same size
if (remoteFormat.GetSizeTSize() == localFormat.GetSizeTSize()) {
const size_t sizeOfData = sizeof(size_t);
if (bufferSize < sizeOfData) {
return 0;
}
data = *(reinterpret_cast<const size_t *>(buffer));
bufferSize -= sizeOfData;
return sizeOfData;
}
// different sizes
// local is 64, hence remote is 32
if (localFormat.GetSizeTSize() == cmnDataFormat::CMN_DATA_SIZE_T_SIZE_64) {
unsigned int tmp;
const size_t sizeOfData = sizeof(unsigned int);
if (bufferSize < sizeOfData) {
return 0;
}
tmp = *(reinterpret_cast<const unsigned int *>(buffer));
bufferSize -= sizeOfData;
data = tmp;
return sizeOfData;
}
// local is 32, hence remote is 64
if (localFormat.GetSizeTSize() == cmnDataFormat::CMN_DATA_SIZE_T_SIZE_32) {
unsigned long long int tmp;
const size_t sizeOfData = sizeof(unsigned long long int);
if (bufferSize < sizeOfData) {
return 0;
}
tmp = *(reinterpret_cast<const unsigned long long int *>(buffer));
bufferSize -= sizeOfData;
if (tmp > std::numeric_limits<size_t>::max()) {
cmnThrow("cmnDataDeSerializeBinary(size_t): received a size_t larger than what can be handled on 32 bits");
}
data = static_cast<size_t>(tmp); // this should be safe now
return sizeOfData;
}
return 0;
}
void cmnDataDeSerializeBinary_size_t(size_t & data,
std::istream & inputStream,
const cmnDataFormat & localFormat,
const cmnDataFormat & remoteFormat)
throw (std::runtime_error)
{
// first case, both use same size
if (remoteFormat.GetSizeTSize() == localFormat.GetSizeTSize()) {
inputStream.read(reinterpret_cast<char *>(&data),
sizeof(size_t));
if (inputStream.fail()) {
cmnThrow("cmnDataDeSerializeBinary(size_t): error occured with std::istream::read");
}
return;
}
// different sizes
// local is 64, hence remote is 32
if (localFormat.GetSizeTSize() == cmnDataFormat::CMN_DATA_SIZE_T_SIZE_64) {
unsigned int tmp;
inputStream.read(reinterpret_cast<char *>(&tmp),
sizeof(tmp));
if (inputStream.fail()) {
cmnThrow("cmnDataDeSerializeBinary(size_t): error occured with std::istream::read");
}
data = tmp;
return;
}
// local is 32, hence remote is 64
if (localFormat.GetSizeTSize() == cmnDataFormat::CMN_DATA_SIZE_T_SIZE_32) {
unsigned long long int tmp;
inputStream.read(reinterpret_cast<char *>(&tmp),
sizeof(tmp));
if (inputStream.fail()) {
cmnThrow("cmnDataDeSerializeBinary(size_t): error occured with std::istream::read");
}
if (tmp > std::numeric_limits<size_t>::max()) {
cmnThrow("cmnDataDeSerializeBinary(size_t): received a size_t larger than what can be handled on 32 bits");
}
data = static_cast<size_t>(tmp); // this should be safe now
return;
}
}