/// <summary>
/// Converts a given number of bytes into a char array and returns it. Expects the required bytes
/// to already be in the buffer
/// </summary>
internal char[] ReadChars(int byteCount)
{
if (byteCount <= Size)
{
Ensure(byteCount);
var result = TextEncoding.GetChars(_buf, ReadPosition, byteCount);
ReadPosition += byteCount;
return(result);
}
// Worst case: our buffer isn't big enough. For now, pessimistically allocate a char buffer
// that will hold the maximum number of characters for the column length
// TODO: Optimize
var pessimisticNumChars = TextEncoding.GetMaxCharCount(byteCount);
var pessimisticOutput = new char[pessimisticNumChars];
var actualNumChars = PopulateCharArray(pessimisticOutput, byteCount);
if (actualNumChars == pessimisticNumChars)
{
return(pessimisticOutput);
}
var output = new char[actualNumChars];
Array.Copy(pessimisticOutput, 0, output, 0, actualNumChars);
return(output);
}