104 lines
2.5 KiB
C#
104 lines
2.5 KiB
C#
/*
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* Copyright 2024 Eduard Kargin <kargin.eduard@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using Ragon.Protocol;
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namespace Ragon.Client
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{
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public class RagonUserData : IUserData
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{
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public byte[] this[string key]
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{
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get => _properties[key];
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set
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{
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_properties[key] = value;
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if (!_changesCache.ContainsKey(key))
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{
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_localChanges.Add(key);
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_changesCache.Add(key, true);
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}
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}
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}
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public void Remove(string key)
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{
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if (_properties.Remove(key))
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{
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if (!_changesCache.ContainsKey(key))
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{
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_localChanges.Add(key);
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_changesCache.Add(key, true);
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}
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}
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}
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public bool Dirty => _localChanges.Count > 0;
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private readonly List<string> _localChanges = new();
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private readonly Dictionary<string, bool> _changesCache = new();
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private readonly Dictionary<string, byte[]> _properties = new();
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public RagonUserData()
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{
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}
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public IReadOnlyList<string> Read(RagonBuffer buffer)
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{
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var len = buffer.ReadUShort();
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var changes = new List<string>(len);
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for (int i = 0; i < len; i++)
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{
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var key = buffer.ReadString();
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var valueSize = buffer.ReadUShort();
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if (valueSize > 0)
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{
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var value = buffer.ReadBytes(valueSize);
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_properties[key] = value;
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}
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else
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{
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_properties.Remove(key);
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}
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changes.Add(key);
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}
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return changes;
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}
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public void Write(RagonBuffer buffer)
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{
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buffer.WriteUShort((ushort)_localChanges.Count);
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foreach (var propertyChanged in _localChanges)
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{
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buffer.WriteString(propertyChanged);
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if (_properties.TryGetValue(propertyChanged, out var property))
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{
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buffer.WriteUShort((ushort)property.Length);
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buffer.WriteBytes(property);
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}
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else
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{
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buffer.WriteUShort(0);
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}
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}
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_localChanges.Clear();
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}
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}
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} |