Update runtime code

重构原生文件加载流程。

Assets/YooAsset/Runtime/AssetSystem/Handles/RawFileOperationHandle.cs

@@ -0,0 +1,95 @@
+using System.IO;
+using System.Text;
+
+namespace YooAsset
+{
+	public class RawFileOperationHandle : OperationHandleBase
+	{
+		private System.Action<RawFileOperationHandle> _callback;
+
+		internal RawFileOperationHandle(ProviderBase provider) : base(provider)
+		{
+		}
+		internal override void InvokeCallback()
+		{
+			_callback?.Invoke(this);
+		}
+
+		/// <summary>
+		/// 完成委托
+		/// </summary>
+		public event System.Action<RawFileOperationHandle> Completed
+		{
+			add
+			{
+				if (IsValid == false)
+					throw new System.Exception($"{nameof(RawFileOperationHandle)} is invalid");
+				if (Provider.IsDone)
+					value.Invoke(this);
+				else
+					_callback += value;
+			}
+			remove
+			{
+				if (IsValid == false)
+					throw new System.Exception($"{nameof(RawFileOperationHandle)} is invalid");
+				_callback -= value;
+			}
+		}
+
+		/// <summary>
+		/// 等待异步执行完毕
+		/// </summary>
+		public void WaitForAsyncComplete()
+		{
+			if (IsValid == false)
+				return;
+			Provider.WaitForAsyncComplete();
+		}
+
+		/// <summary>
+		/// 释放资源句柄
+		/// </summary>
+		public void Release()
+		{
+			this.ReleaseInternal();
+		}
+		
+
+		/// <summary>
+		/// 获取原生文件的二进制数据
+		/// </summary>
+		public byte[] GetRawFileData()
+		{
+			if (IsValid == false)
+				return null;
+			string filePath = Provider.RawFilePath;
+			if (File.Exists(filePath) == false)
+				return null;
+			return File.ReadAllBytes(filePath);
+		}
+
+		/// <summary>
+		/// 获取原生文件的文本数据
+		/// </summary>
+		public string GetRawFileText()
+		{
+			if (IsValid == false)
+				return null;
+			string filePath = Provider.RawFilePath;
+			if (File.Exists(filePath) == false)
+				return null;
+			return File.ReadAllText(filePath, Encoding.UTF8);
+		}
+
+		/// <summary>
+		/// 获取原生文件的路径
+		/// </summary>
+		public string GetRawFilePath()
+		{
+			if (IsValid == false)
+				return string.Empty;
+			return Provider.RawFilePath;
+		}
+	}
+}