/// <exception cref="ArgumentNullException"><paramref name="buffer"/> is null.</exception>
/// <exception cref="ArgumentOutOfRangeException">Range specified by <paramref name="start"/> and <paramref name="byteCount"/> falls outside of the bounds of the <paramref name="buffer"/>.</exception>
/// <exception cref="InvalidOperationException">Builder is not writable, it has been linked with another one.</exception>
public unsafe void WriteBytes(byte[] buffer, int start, int byteCount)
{
if (buffer == null)
{
throw new ArgumentNullException(nameof(buffer));
}
BlobUtilities.ValidateRange(buffer.Length, start, byteCount);
if (!IsHead)
{
ThrowHeadRequired();
}
// an empty array has no element pointer:
if (buffer.Length == 0)
{
return;
}
fixed(byte *ptr = buffer)
{
WriteBytesUnchecked(ptr + start, byteCount);
}
}
/// <exception cref="ArgumentOutOfRangeException">Range specified by <paramref name="start"/> and <paramref name="byteCount"/> falls outside of the bounds of the buffer content.</exception>
/// <exception cref="InvalidOperationException">Content is not available, the builder has been linked with another one.</exception>
public byte[] ToArray(int start, int byteCount)
{
BlobUtilities.ValidateRange(Count, start, byteCount);
var result = new byte[byteCount];
int chunkStartPosition = 0;
int resultOffset = 0;
foreach (var chunk in GetChunks())
{
int chunkEndPosition = chunkStartPosition + chunk.Length;
if (chunkEndPosition > start)
{
int bytesToCopy = Math.Min(chunk.Length, result.Length - resultOffset);
if (bytesToCopy == 0)
{
break;
}
Array.Copy(chunk._buffer, Math.Max(start - chunkStartPosition, 0), result, resultOffset, bytesToCopy);
resultOffset += bytesToCopy;
}
chunkStartPosition = chunkEndPosition;
}
Debug.Assert(resultOffset == result.Length);
return(result);
}
/// <exception cref="ArgumentOutOfRangeException">Range specified by <paramref name="start"/> and <paramref name="byteCount"/> falls outside of the bounds of the buffer content.</exception>
public byte[] ToArray(int start, int byteCount)
{
BlobUtilities.ValidateRange(Length, start, byteCount);
var result = new byte[byteCount];
Array.Copy(_buffer, _start + start, result, 0, byteCount);
return(result);
}
/// <exception cref="ArgumentOutOfRangeException">Range specified by <paramref name="start"/> and <paramref name="byteCount"/> falls outside of the bounds of the buffer content.</exception>
/// <exception cref="InvalidOperationException">Content is not available, the builder has been linked with another one.</exception>
public byte[] ToArray(int start, int byteCount)
{
BlobUtilities.ValidateRange(Count, start, byteCount);
var result = new byte[byteCount];
int chunkStart = 0;
int bufferStart = start;
int bufferEnd = start + byteCount;
foreach (var chunk in GetChunks())
{
int chunkEnd = chunkStart + chunk.Length;
Debug.Assert(bufferStart >= chunkStart);
if (chunkEnd > bufferStart)
{
int bytesToCopy = Math.Min(bufferEnd, chunkEnd) - bufferStart;
Debug.Assert(bytesToCopy >= 0);
Array.Copy(chunk._buffer, bufferStart - chunkStart, result, bufferStart - start, bytesToCopy);
bufferStart += bytesToCopy;
if (bufferStart == bufferEnd)
{
break;
}
}
chunkStart = chunkEnd;
}
Debug.Assert(bufferStart == bufferEnd);
return(result);
}