/// <summary>
/// Starts a new segment and updates all the counters.
/// </summary>
/// <param name="length">The length of the new segment.</param>
public void Flush(int length = 1024)
{
this.length += currentSegment.Length;
currentSegment.next = new ManagedBinaryMemoryWriterSegment(this, length);
currentSegment = currentSegment.next;
}
internal void flush(ManagedBinaryMemoryWriterSegment initiator, int length = 1024)
{
if (initiator != currentSegment)
{
throw new InvalidOperationException("An insertionpoint can't increase in size.");
}
this.length += currentSegment.Length;
currentSegment.next = new ManagedBinaryMemoryWriterSegment(this, length);
currentSegment = currentSegment.next;
}
/// <summary>
/// Creates an insertionpoint to which you can write data AFTER you continued writing things to the writer itself.
///
/// You need to call finish onto the segment after you have finished writing to the insertionpoint.
/// </summary>
/// <param name="length">The amount of bytes you wanna write to.</param>
/// <returns>The segment for the insertion point.</returns>
public ManagedBinaryMemoryWriterSegment MakeInsertionpoint(int length)
{
this.length += currentSegment.Length;
currentSegment.next = new ManagedBinaryMemoryWriterSegment(this, length);
ManagedBinaryMemoryWriterSegment result = currentSegment.next;
result.next = new ManagedBinaryMemoryWriterSegment(this, 1024);
currentSegment = result.next;
return(result);
}
/// <summary>
/// Saves writer content to the given pointer.
/// </summary>
/// <param name="ptr">The Pointer we write to.</param>
/// <returns>The amount of bytes written.</returns>
public unsafe long ToPointer(byte *ptr)
{
long size = 0;
ManagedBinaryMemoryWriterSegment segment = this.segment;
while (segment != null)
{
size += segment.ToPointer(ref ptr);
segment = segment.next;
}
return((int)size);
}
/// <summary>
/// Saves writer content to this stream.
/// </summary>
/// <param name="stream">The stream to save to.</param>
/// <returns>The bytes written.</returns>
public long ToStream(Stream stream)
{
long size = 0;
ManagedBinaryMemoryWriterSegment segment = this.segment;
while (segment != null)
{
size += segment.ToStream(stream);
segment = segment.next;
}
return(size);
}
/// <summary>
/// Saves writer content to the given byte[] and it's offset.
/// </summary>
/// <param name="data">The byte[].</param>
/// <param name="offset">The offset.</param>
/// <returns></returns>
public int ToArray(byte[] data, int offset)
{
long size = length + currentSegment.Length;
if (data.Length < size + offset)
{
throw new ArgumentException("Not enough memory in data.", "data");
}
int position = offset;
ManagedBinaryMemoryWriterSegment segment = this.segment;
while (segment != null)
{
segment.ToArray(data, ref position);
segment = segment.next;
}
return((int)size);
}
/// <summary>
/// Generates a new array with the contents of this writer. Beware, the content shouldn't exceed .NET memory array limit of nearly 2 GiB.
/// </summary>
/// <returns>The array.</returns>
public byte[] ToArray()
{
long size = length + currentSegment.Length;
if (size > 2147000000)
{
throw new OutOfMemoryException("Array buffers can't exceed 2147000000 bytes. Write to a stream, if you generated bigger data than the near 2 GiB limit.");
}
byte[] data = new byte[size];
int position = 0;
ManagedBinaryMemoryWriterSegment segment = this.segment;
while (segment != null)
{
segment.ToArray(data, ref position);
segment = segment.next;
}
return(data);
}
/// <summary>
/// Instantiates a managed binary memory writer.
/// </summary>
public ManagedBinaryMemoryWriter()
{
segment = new ManagedBinaryMemoryWriterSegment(this, 64);
currentSegment = segment;
}
