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fix: add support for unicode emojis

This commit is contained in:
Oliver Booth 2023-08-27 21:24:28 +01:00
parent 1644b701ba
commit 67a5f9777a
Signed by: oliverbooth
GPG Key ID: B89D139977693FED
1 changed files with 22 additions and 4 deletions
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26
VPLink/Services/DiscordMessageService.cs
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@ -96,6 +96,9 @@ internal sealed class DiscordMessageService : BackgroundService, IDiscordMessage
SanitizeContent(guild, message.Content, ref builder);
var content = builder.ToString();
Span<byte> testSpan = stackalloc byte[Utf8Encoding.GetByteCount(content)];
Utf8Encoding.GetBytes(content, testSpan);
_logger.LogInformation("Message by {Author}: {Content}", author, content);
var messages = new List<RelayedMessage>();
@ -141,14 +144,16 @@ internal sealed class DiscordMessageService : BackgroundService, IDiscordMessage
private static void AddMessage(ICollection<RelayedMessage> messages, string displayName, string content)
{
Span<byte> buffer = stackalloc byte[255]; // VP message length limit
int byteCount = Utf8Encoding.GetByteCount(content);
Span<byte> buffer = stackalloc byte[byteCount];
Utf8Encoding.GetBytes(content, buffer);
var offset = 0;
while (offset < byteCount)
{
int length = Math.Min(byteCount - offset, 255);
Utf8Encoding.GetBytes(content.AsSpan(offset, length), buffer);
messages.Add(new RelayedMessage(displayName, Utf8Encoding.GetString(buffer), false));
int length = Math.Min(byteCount - offset, 255); // VP message length limit
Span<byte> slice = buffer.Slice(offset, length);
messages.Add(new RelayedMessage(displayName, Utf8Encoding.GetString(slice), false));
offset += length;
}
}
@ -199,6 +204,8 @@ internal sealed class DiscordMessageService : BackgroundService, IDiscordMessage
{
Utf8ValueStringBuilder wordBuffer = ZString.CreateUtf8StringBuilder();
Span<char> chars = stackalloc char[2];
Span<byte> bytes = stackalloc byte[4];
for (var index = 0; index < content.Length; index++)
{
char current = content[index];
@ -207,6 +214,13 @@ internal sealed class DiscordMessageService : BackgroundService, IDiscordMessage
AddWord(guild, ref builder, ref wordBuffer, current);
wordBuffer.Clear();
}
else if (char.IsSurrogate(current))
{
content.Slice(index++, 2).CopyTo(chars);
int byteCount = Utf8Encoding.GetByteCount(chars);
Utf8Encoding.GetBytes(chars, bytes);
wordBuffer.AppendLiteral(bytes[..byteCount]);
}
else
{
wordBuffer.Append(current);
@ -256,6 +270,10 @@ internal sealed class DiscordMessageService : BackgroundService, IDiscordMessage
MentionUtility.ParseTag(guild, temp[..tagLength], ref builder, whitespace);
break;
case var _ when char.IsSurrogate(current):
buffer.Append(chars.Slice(index++, 2));
break;
default:
buffer.Append(current);
break;