/// <summary>
/// Return an array of the underlying storage from <paramref name="buf"/> into a byte array.
/// The copy will start at {@code start} and copy {@code length} bytes.
/// If <paramref name="copy"/> is true a copy will be made of the memory.
/// If <paramref name="copy"/> is false the underlying storage will be shared, if possible.
/// </summary>
/// <param name="buf"></param>
/// <param name="start"></param>
/// <param name="length"></param>
/// <param name="copy"></param>
/// <returns></returns>
public static byte[] GetBytes(IByteBuffer buf, int start, int length, bool copy)
{
var capacity = buf.Capacity;
if (MathUtil.IsOutOfBounds(start, length, capacity))
{
ThrowHelper.ThrowIndexOutOfRangeException_Expected(start, length, capacity);
}
if (buf.HasArray)
{
if (copy || start != 0 || length != capacity)
{
int baseOffset = buf.ArrayOffset + start;
var bytes = new byte[length];
PlatformDependent.CopyMemory(buf.Array, baseOffset, bytes, 0, length);
return(bytes);
}
else
{
return(buf.Array);
}
}
byte[] v = new byte[length];
_ = buf.GetBytes(start, v);
return(v);
}
public static void DoAppendPrettyHexDump(StringBuilder dump, IByteBuffer buf, int offset, int length)
{
if (MathUtil.IsOutOfBounds(offset, length, buf.Capacity))
{
ThrowHelper.ThrowIndexOutOfRangeException_Expected(offset, length, buf.Capacity);
}
if (0u >= (uint)length)
{
return;
}
_ = dump.Append(
" +-------------------------------------------------+" +
Newline + " | 0 1 2 3 4 5 6 7 8 9 a b c d e f |" +
Newline + "+--------+-------------------------------------------------+----------------+");
int startIndex = offset;
int fullRows = length.RightUShift(4);
int remainder = length & 0xF;
// Dump the rows which have 16 bytes.
for (int row = 0; row < fullRows; row++)
{
int rowStartIndex = (row << 4) + startIndex;
// Per-row prefix.
AppendHexDumpRowPrefix(dump, row, rowStartIndex);
// Hex dump
int rowEndIndex = rowStartIndex + 16;
for (int j = rowStartIndex; j < rowEndIndex; j++)
{
_ = dump.Append(Byte2Hex[buf.GetByte(j)]);
}
_ = dump.Append(" |");
// ASCII dump
for (int j = rowStartIndex; j < rowEndIndex; j++)
{
_ = dump.Append(Byte2Char[buf.GetByte(j)]);
}
_ = dump.Append('|');
}
// Dump the last row which has less than 16 bytes.
if (remainder != 0)
{
int rowStartIndex = (fullRows << 4) + startIndex;
AppendHexDumpRowPrefix(dump, fullRows, rowStartIndex);
// Hex dump
int rowEndIndex = rowStartIndex + remainder;
for (int j = rowStartIndex; j < rowEndIndex; j++)
{
_ = dump.Append(Byte2Hex[buf.GetByte(j)]);
}
_ = dump.Append(HexPadding[remainder]);
_ = dump.Append(" |");
// Ascii dump
for (int j = rowStartIndex; j < rowEndIndex; j++)
{
_ = dump.Append(Byte2Char[buf.GetByte(j)]);
}
_ = dump.Append(BytePadding[remainder]);
_ = dump.Append('|');
}
_ = dump.Append(Newline + "+--------+-------------------------------------------------+----------------+");
}