// #US / #Blob
public static uint ReadCompressedUInt32(HexBuffer buffer, ref HexPosition position)
{
byte b = buffer.ReadByte(position++);
if ((b & 0x80) == 0)
{
return(b);
}
if ((b & 0xC0) == 0x80)
{
return((uint)((b & 0x3F) << 8) | buffer.ReadByte(position++));
}
// The encoding 111x isn't allowed but the CLR sometimes doesn't verify this
// and just assumes it's 110x. Don't fail if it's 111x, just assume it's 110x.
return((uint)(((b & 0x1F) << 24) | (buffer.ReadByte(position++) << 16) |
(buffer.ReadByte(position++) << 8) | buffer.ReadByte(position++)));
}
static string GetString(StringBuilder sb, HexBuffer buffer, HexPosition position, int stringLength)
{
sb.Clear();
for (int i = 0; i < stringLength; i++)
{
var b = buffer.ReadByte(position++);
if (b == 0)
{
break;
}
sb.Append((char)b);
}
return(sb.ToString());
}
static int?Read7BitEncodedInt32(HexBuffer buffer, ref HexPosition position)
{
uint val = 0;
int bits = 0;
for (int i = 0; i < 5; i++)
{
byte b = buffer.ReadByte(position++);
val |= (uint)(b & 0x7F) << bits;
if ((b & 0x80) == 0)
{
return((int)val);
}
bits += 7;
}
return(null);
}
public ByteHexField(HexBuffer buffer, string parentName, string name, HexPosition start, bool useDecimal = false)
: base(buffer, parentName, name, start, 1)
{
data = new ByteVM(buffer.ReadByte(start), a => UpdateValue(), useDecimal);
}
public ByteFlagsHexField(HexBuffer buffer, string parentName, string name, HexPosition start)
: base(buffer, parentName, name, start, 1)
{
data = new ByteVM(buffer.ReadByte(start), a => UpdateValue(), false);
}