public static void Run()
{
Console.WriteLine("Converting ox emoji to UTF-16 and UTF-8");
Rune rune = Rune.GetRuneAt("🐂", 0);
Console.WriteLine($"Rune value: {rune.Value}");
// <SnippetUtf16CharArray>
char[] chars = new char[rune.Utf16SequenceLength];
int numCharsWritten = rune.EncodeToUtf16(chars);
// </SnippetUtf16CharArray>
Console.WriteLine($"Number of chars: {numCharsWritten}");
// <SnippetUtf16String>
string theString = rune.ToString();
// </SnippetUtf16String>
// <SnippetUtf8ByteArray>
byte[] bytes = new byte[rune.Utf8SequenceLength];
int numBytesWritten = rune.EncodeToUtf8(bytes);
// </SnippetUtf8ByteArray>
Console.WriteLine($"Number of UTF-8 bytes: {numBytesWritten}");
}
[InlineData("x\U0001F46Ey", 1, 0x1F46E)] // U+1F46E POLICE OFFICER
public static void GetRuneAt_TryGetRuneAt_Utf16_Success(string inputString, int index, int expectedScalarValue)
{
// GetRuneAt
Assert.Equal(expectedScalarValue, Rune.GetRuneAt(inputString, index).Value);
// TryGetRuneAt
Assert.True(Rune.TryGetRuneAt(inputString, index, out Rune rune));
Assert.Equal(expectedScalarValue, rune.Value);
}
public static void GetRuneAt_TryGetRuneAt_Utf16_BadArgs()
{
// null input
Assert.Throws <ArgumentNullException>("input", () => Rune.GetRuneAt(null, 0));
// negative index specified
Assert.Throws <ArgumentOutOfRangeException>("index", () => Rune.GetRuneAt("hello", -1));
// index goes past end of string
Assert.Throws <ArgumentOutOfRangeException>("index", () => Rune.GetRuneAt(string.Empty, 0));
}
[InlineData(new char[] { 'x', '\uD800' }, 1)] // end of string reached before could complete surrogate pair
public static void GetRuneAt_TryGetRuneAt_Utf16_InvalidData(char[] inputCharArray, int index)
{
string inputString = new string(inputCharArray);
// GetRuneAt
Assert.Throws <ArgumentException>("index", () => Rune.GetRuneAt(inputString, index));
// TryGetRuneAt
Assert.False(Rune.TryGetRuneAt(inputString, index, out Rune rune));
Assert.Equal(0, rune.Value);
}
private async Task HandleReactionAddedAsync(Cacheable <IUserMessage, ulong> reactionMessage, ISocketMessageChannel reactionChannel, SocketReaction reaction)
{
if (reaction.User.IsSpecified && reaction.User.Value.IsBot)
{
return;
}
var rune = Rune.GetRuneAt(reaction.Emote.Name, 0);
var message = await reactionMessage.GetOrDownloadAsync();
var menu = BotContext.Menus.FirstOrDefault(m => m.MessageID == message.Id);
if (menu != null)
{
await message.RemoveReactionAsync(reaction.Emote, reaction.User.Value);
}
if (menu?.UserID == reaction.UserId && rune.Value >= ENCLOSED_A_INT && rune.Value < (ENCLOSED_A_INT + 26))
{
int i = rune.Value - ENCLOSED_A_INT;
if (i < menu.Menu.Options.Count)
{
var option = menu.Menu.Options[i];
var result = option.Action();
switch (result)
{
case string response:
await message.DeleteAsync();
await reactionChannel.SendMessageAsync("Menu Result: " + response);
BotContext.Menus.Remove(menu);
break;
case Menu submenu:
await message.RemoveAllReactionsAsync();
await message.ModifyAsync(m => m.Embed = MenuHandler.ConvertMenuToEmbed(submenu));
foreach (var o in submenu.Options)
{
await message.AddReactionAsync(new Emoji((new Rune(127462 + i++).ToString())), new RequestOptions { RetryMode = RetryMode.RetryRatelimit });
}
submenu.BackReference = menu.Menu;
menu.Menu = submenu;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}
}
private static void TestUtf8String()
{
Rune rune = Rune.GetRuneAt("😃", 0);
byte[] t = new byte[12];
t[0] = (byte)'a';
t[1] = (byte)'b';
t[2] = (byte)'c';
t[3] = (byte)'d';
rune.EncodeToUtf8(t.AsSpan(4));
t[8 + 0] = (byte)'e';
t[8 + 1] = (byte)'f';
t[8 + 2] = (byte)'g';
t[8 + 3] = (byte)'h';
var s = new Utf8Splitter(t, default, StringSplitOptions.None);
