Files
HellionChat/HellionChat/Util/ExtraPayload.cs
T
JonKazama-Hellion 1f7f0945c5 build: rename repository folder ChatTwo to HellionChat
Repository folder, csproj, solution and all CI/build paths now use
the consolidated HellionChat name.

- ChatTwo/ → HellionChat/ (git mv preserves history with --follow)
- ChatTwo.csproj → HellionChat.csproj
- ChatTwo.sln → HellionChat.sln; obsolete Tests project entry removed
  (private/untracked sandbox)
- AssemblyInfo.cs InternalsVisibleTo for ChatTwo.Tests removed
  (file emptied; can be repopulated when actual tests land)
- repo.json and yaml image URLs updated (ChatTwo/images/ → HellionChat/images/)
- .github/workflows/{build,codeql,release}.yml csproj paths
- .github/dependabot.yml directory path

Functional behavior unchanged.
2026-05-03 21:30:07 +02:00

67 lines
2.5 KiB
C#

namespace HellionChat.Util;
public class ColorPayload
{
private const byte StartByte = 2;
public bool Enabled;
public uint Color;
public uint UnshiftedColor;
public static ColorPayload? From(byte[] data)
{
using var stream = new MemoryStream(data);
if (stream.ReadByte() != StartByte || stream.ReadByte() != 0x13)
return null;
stream.ReadByte(); // skip the length byte;
var typeByte = stream.ReadByte();
var payload = new ColorPayload();
switch (typeByte)
{
case 0xEC:
payload.Enabled = false;
return payload;
case 0xE9:
var param = stream.ReadByte();
var globalValue = (uint) GlobalParametersCache.GetValue(param - 2);
payload.Enabled = true;
payload.UnshiftedColor = globalValue;
payload.Color = ColourUtil.ArgbToRgba(globalValue);
return payload;
case >= 0xF0 and <= 0xFE:
// From: https://github.com/NotAdam/Lumina/blob/master/src/Lumina/Text/Expressions/IntegerExpression.cs#L119-L128
uint ShiftAndThrowIfZero(int v, int shift)
{
return v switch
{
// ReSharper disable once LocalizableElement
-1 => throw new ArgumentException("Encountered premature end of input (unexpected EOF).", nameof(v)),
// ReSharper disable once LocalizableElement
0 => throw new ArgumentException("Encountered premature end of input (unexpected null character).", nameof(v)),
_ => (uint)v << shift
};
}
typeByte += 1;
var argbValue = 0u;
if ((typeByte & 8) != 0)
argbValue |= ShiftAndThrowIfZero(stream.ReadByte(), 24);
else
argbValue |= 0xff000000u;
if( (typeByte & 4) != 0 ) argbValue |= ShiftAndThrowIfZero( stream.ReadByte(), 16 );
if( (typeByte & 2) != 0 ) argbValue |= ShiftAndThrowIfZero( stream.ReadByte(), 8 );
if( (typeByte & 1) != 0 ) argbValue |= ShiftAndThrowIfZero( stream.ReadByte(), 0 );
payload.Enabled = true;
payload.Color = ColourUtil.ArgbToRgba(argbValue);
return payload;
default:
return null;
}
}
}