/// <summary>
/// Function to copy the contents of the pointer to a byte array.
/// </summary>
/// <typeparam name="T">Type of data in the array.</typeparam>
/// <param name="source">Source pointer.</param>
/// <param name="destination">Destination array of bytes.</param>
/// <param name="destinationIndex">Index in the array to start writing at.</param>
/// <param name="size">Size of the data to copy, in bytes.</param>
/// <remarks>Since a pointer doesn't have a size associated with it, care must be taken to not overstep the bounds of the data pointed at by the pointer.</remarks>
/// <exception cref="System.ArgumentNullException">Thrown if the <paramref name="destination"/> parameter is NULL (Nothing in VB.Net).</exception>
/// <exception cref="System.ArgumentOutOfRangeException">Thrown if the size + destinationIndex is greater than the number of elements in the destination parameter.
/// <para>-or-</para>
/// <para>Thrown if the destinationIndex is less than 0.</para>
/// </exception>
public static void CopyTo <T>(this IntPtr source, T[] destination, int destinationIndex, int size)
where T : struct
{
#if DEBUG
int sizeInBytes = DirectAccess.SizeOf <T>();
if (source == IntPtr.Zero)
{
throw new ArgumentNullException("source");
}
if (destination == null)
{
throw new ArgumentNullException("destination");
}
if (destinationIndex < 0)
{
throw new ArgumentOutOfRangeException("destinationIndex",
string.Format(Resources.GOR_INDEX_OUT_OF_RANGE, destinationIndex, destination.Length * sizeInBytes));
}
if ((destinationIndex * sizeInBytes) + size > destination.Length * DirectAccess.SizeOf <T>())
{
throw new ArgumentOutOfRangeException("destinationIndex",
string.Format(Resources.GOR_INDEX_OUT_OF_RANGE, destinationIndex + size, destination.Length * sizeInBytes));
}
#endif
DirectAccess.ReadArray(source, destination, destinationIndex, size);
}
/// <summary>
/// Function to copy the contents of the pointer to a byte array.
/// </summary>
/// <param name="source">Source pointer.</param>
/// <param name="destination">Destination array of bytes.</param>
/// <param name="destinationIndex">Index in the array to start writing at.</param>
/// <param name="size">Size of the data to copy.</param>
/// <remarks>Since a pointer doesn't have a size associated with it, care must be taken to not overstep the bounds of the data pointed at by the pointer.</remarks>
/// <exception cref="System.ArgumentNullException">Thrown if the <paramref name="destination"/> parameter is NULL (Nothing in VB.Net).</exception>
/// <exception cref="System.ArgumentOutOfRangeException">Thrown if the size + destinationIndex is greater than the number of elements in the destination parameter.
/// <para>-or-</para>
/// <para>Thrown if the destinationIndex is less than 0.</para>
/// </exception>
public static void CopyTo(this IntPtr source, byte[] destination, int destinationIndex, int size)
{
if (source == IntPtr.Zero)
{
return;
}
#if DEBUG
if (destination == null)
{
throw new ArgumentNullException("destination");
}
if (destinationIndex < 0)
{
throw new ArgumentOutOfRangeException("destinationIndex",
string.Format(Resources.GOR_INDEX_OUT_OF_RANGE, destinationIndex, destination.Length));
}
if (destinationIndex + size > destination.Length)
{
throw new ArgumentOutOfRangeException("destinationIndex",
string.Format(Resources.GOR_INDEX_OUT_OF_RANGE, destinationIndex + size, destination.Length));
}
#endif
DirectAccess.ReadArray(source, destination, destinationIndex, size);
}
/// <summary>
/// Function to write a range of generic values.
/// </summary>
/// <typeparam name="T">Type of value to write. Must be a value type.</typeparam>
/// <param name="value">Array of values to write.</param>
/// <param name="startIndex">Starting index in the array.</param>
/// <param name="count">Number of array elements to copy.</param>
/// <exception cref="System.ArgumentNullException">Thrown when the <paramref name="value"/> parameter is NULL (Nothing in VB.Net).</exception>
/// <exception cref="System.ArgumentOutOfRangeException">Thrown when the <paramref name="startIndex"/> parameter is less than 0.
/// <para>-or-</para>
/// <para>Thrown when the startIndex parameter is equal to or greater than the number of elements in the value parameter.</para>
/// <para>-or-</para>
/// <para>Thrown when the sum of startIndex and <paramref name="count"/> is greater than the number of elements in the value parameter.</para>
/// </exception>
/// <exception cref="System.IO.IOException">Thrown when the stream is read-only.</exception>
public unsafe void WriteRange <T>(T[] value, int startIndex, int count)
where T : struct
{
if (value == null)
{
throw new ArgumentNullException("value");
}
if ((value.Length == 0) || (count <= 0))
{
return;
}
if (startIndex < 0)
{
throw new ArgumentOutOfRangeException(string.Format(Resources.GOR_VALUE_IS_LESS_THAN, startIndex, 0));
}
if (startIndex >= value.Length)
{
throw new ArgumentOutOfRangeException(string.Format(Resources.GOR_VALUE_IS_GREATER_THAN, startIndex, value.Length));
}
if (startIndex + count > value.Length)
{
throw new ArgumentOutOfRangeException(string.Format(Resources.GOR_VALUE_IS_LESS_THAN, startIndex + count, value.Length));
}
int typeSize = DirectAccess.SizeOf <T>();
int offset = typeSize * startIndex;
int size = typeSize * count;
// Allocate our temporary buffer if we haven't already.
if (_tempBuffer == null)
{
_tempBuffer = new byte[GorgonChunkedFormat.TempBufferSize];
}
fixed(byte *tempBufferPointer = &_tempBuffer[0])
{
while (size > 0)
{
int blockSize = size > GorgonChunkedFormat.TempBufferSize ? GorgonChunkedFormat.TempBufferSize : size;
// Read our array into our temporary byte buffer.
DirectAccess.ReadArray(tempBufferPointer, value, offset, blockSize);
offset += blockSize;
size -= size;
// Write the temporary byte buffer to the stream.
Write(_tempBuffer, 0, blockSize);
}
}
}
/// <summary>
/// Function to read a range of generic values.
/// </summary>
/// <typeparam name="T">Type of value to read. Must be a value type.</typeparam>
/// <param name="value">Array of values to read.</param>
/// <param name="startIndex">Starting index in the array.</param>
/// <param name="count">Number of array elements to copy.</param>
/// <exception cref="System.ArgumentNullException">Thrown when the <paramref name="value"/> parameter is NULL (Nothing in VB.Net).</exception>
/// <exception cref="System.ArgumentOutOfRangeException">Thrown when the <paramref name="startIndex"/> parameter is less than 0.
/// <para>-or-</para>
/// <para>Thrown when the startIndex parameter is equal to or greater than the number of elements in the value parameter.</para>
/// <para>-or-</para>
/// <para>Thrown when the sum of startIndex and <paramref name="count"/> is greater than the number of elements in the value parameter.</para>
/// </exception>
/// <exception cref="System.IO.IOException">Thrown when the stream is write-only.</exception>
public unsafe void ReadRange <T>(T[] value, int startIndex, int count)
where T : struct
{
if (value == null)
{
throw new ArgumentNullException("value");
}
if ((value.Length == 0) || (count <= 0))
{
return;
}
if (startIndex < 0)
{
throw new ArgumentOutOfRangeException(string.Format(Resources.GOR_VALUE_IS_LESS_THAN, startIndex, 0));
}
if (startIndex >= value.Length)
{
throw new ArgumentOutOfRangeException(string.Format(Resources.GOR_VALUE_IS_GREATER_THAN, startIndex, value.Length));
}
if (startIndex + count > value.Length)
{
throw new ArgumentOutOfRangeException(string.Format(Resources.GOR_VALUE_IS_LESS_THAN, startIndex + count, value.Length));
}
int typeSize = DirectAccess.SizeOf <T>();
int size = typeSize * count;
int offset = startIndex * typeSize;
if (_tempBuffer == null)
{
_tempBuffer = new byte[GorgonChunkedFormat.TempBufferSize];
}
fixed(byte *tempBufferPointer = &_tempBuffer[0])
{
while (size > 0)
{
int blockSize = size > GorgonChunkedFormat.TempBufferSize ? GorgonChunkedFormat.TempBufferSize : size;
// Read the data from the stream as byte values.
Read(_tempBuffer, 0, blockSize);
// Copy into our array.
DirectAccess.ReadArray(tempBufferPointer, value, offset, blockSize);
offset += blockSize;
size -= blockSize;
}
}
}
/// <summary>
/// Function to read a range of generic values.
/// </summary>
/// <typeparam name="T">Type of value to read. Must be a value type.</typeparam>
/// <param name="value">Array of values to read.</param>
/// <param name="startIndex">Starting index in the array.</param>
/// <param name="count">Number of array elements to copy.</param>
/// <exception cref="System.ArgumentNullException">Thrown when the <paramref name="value"/> parameter is NULL (Nothing in VB.Net).</exception>
/// <exception cref="System.ArgumentOutOfRangeException">Thrown when the <paramref name="startIndex"/> parameter is less than 0.
/// <para>-or-</para>
/// <para>Thrown when the startIndex parameter is equal to or greater than the number of elements in the value parameter.</para>
/// <para>-or-</para>
/// <para>Thrown when the sum of startIndex and <paramref name="count"/> is greater than the number of elements in the value parameter.</para>
/// </exception>
/// <exception cref="System.IO.IOException">Thrown when the stream is write-only.</exception>
public unsafe void ReadRange <T>(T[] value, int startIndex, int count)
where T : struct
{
ValidateAccess(false);
if (value == null)
{
throw new ArgumentNullException("value");
}
if ((value.Length == 0) || (count <= 0))
{
return;
}
if ((startIndex < 0) || (startIndex >= value.Length))
{
throw new ArgumentOutOfRangeException(string.Format(Resources.GOR_INDEX_OUT_OF_RANGE, startIndex,
value.Length));
}
if (startIndex + count > value.Length)
{
throw new ArgumentOutOfRangeException(string.Format(Resources.GOR_INDEX_OUT_OF_RANGE, startIndex + count,
value.Length));
}
int typeSize = DirectAccess.SizeOf <T>();
int size = typeSize * count;
int offset = startIndex * typeSize;
if (TempBuffer == null)
{
TempBuffer = new byte[TempBufferSize];
}
fixed(byte *tempBufferPointer = &TempBuffer[0])
{
while (size > 0)
{
int blockSize = size > TempBufferSize ? TempBufferSize : size;
// Read the data from the stream as byte values.
Read(TempBuffer, 0, blockSize);
// Copy into our array.
DirectAccess.ReadArray(tempBufferPointer, value, offset, blockSize);
offset += blockSize;
size -= blockSize;
}
}
}
