nadekobot/src/NadekoBot/Common/PubSub/YamlSeria.cs

using System.Text.RegularExpressions;
using NadekoBot.Common.Yml;
using NadekoBot.Common.Configs;
using YamlDotNet.Serialization;

namespace NadekoBot.Common;

public class YamlSeria : IConfigSeria
{
    private readonly ISerializer _serializer;
    private readonly IDeserializer _deserializer;

    private static readonly Regex CodePointRegex
        = new(@"(\\U(?<code>[a-zA-Z0-9]{8})|\\u(?<code>[a-zA-Z0-9]{4})|\\x(?<code>[a-zA-Z0-9]{2}))",
            RegexOptions.Compiled);

    public YamlSeria()
    {
        _serializer = Yaml.Serializer;
        _deserializer = Yaml.Deserializer;
    }
        
    public string Serialize<T>(T obj)
    {
        var escapedOutput = _serializer.Serialize(obj);
        var output = CodePointRegex.Replace(escapedOutput, me =>
        {
            var str = me.Groups["code"].Value;
            var newString = YamlHelper.UnescapeUnicodeCodePoint(str);
            return newString;
        });
        return output;
    }

    public T Deserialize<T>(string data) 
        => _deserializer.Deserialize<T>(data);
}