//============================================================================
// NDataEncoder::Hex_Encode : Encode to hex.
//----------------------------------------------------------------------------
NString NDataEncoder::Hex_Encode(const NData &theValue)
{ NIndex n, theSize;
NData tmpBuffer;
NString theResult;
const uint8_t *dataPtr;
char *textPtr;
// Get the state we need
theSize = theValue.GetSize();
dataPtr = theValue.GetData();
textPtr = (char *) tmpBuffer.AppendData((theSize * 2) + 1);
if (theSize == 0 || dataPtr == NULL || textPtr == NULL)
return(theResult);
// Convert to a string
for (n = 0; n < theSize; n++)
{
sprintf(textPtr, "%.2X", dataPtr[n]);
textPtr += 2;
}
theResult = NString(tmpBuffer);
return(theResult);
}
//============================================================================
// NDataEncoder::Hex_Decode : Decode from hex.
//----------------------------------------------------------------------------
NData NDataEncoder::Hex_Decode(const NString &theValue)
{ NIndex n, theSize;
NData theResult;
uint8_t *dataPtr;
const char *textPtr;
unsigned int byteVal;
// Validate our parameters
NN_ASSERT(theValue.IsEmpty() || (theValue.GetSize() % 2) == 0);
// Get the state we need
theSize = theValue.GetSize() / 2;
dataPtr = theResult.AppendData(theSize);
textPtr = theValue.GetUTF8();
if (theSize == 0 || dataPtr == NULL || textPtr == NULL)
return(theResult);
// Convert the string
//
// Visual Studio does not support 'hh' correctly, so we need to read byte
// values into a temporary variable:
//
// https://connect.microsoft.com/VisualStudio/feedback/details/416843/sscanf-cannot-not-handle-hhd-format
for (n = 0; n < theSize; n++)
{
sscanf(textPtr, "%2x", &byteVal);
NN_ASSERT((byteVal & 0xFFFFFF00) == 0);
dataPtr[n] = (uint8_t) byteVal;
textPtr += 2;
}
return(theResult);
}
//============================================================================
// NDBResult::GetValueData : Get a data value.
//----------------------------------------------------------------------------
NData NDBResult::GetValueData(NIndex theIndex) const
{ NData theResult;
const void *thePtr;
NIndex theSize;
// Validate our parameters
NN_ASSERT(theIndex < GetSize());
// Get the value
thePtr = (const void *) sqlite3_column_blob( (sqlite3_stmt *) mResult, theIndex);
theSize = (NIndex ) sqlite3_column_bytes((sqlite3_stmt *) mResult, theIndex);
if (thePtr != NULL && theSize != 0)
theResult.AppendData(theSize, thePtr);
return(theResult);
}
