Initial commit

Assets/YooAsset/Runtime/PatchSystem/PatchCache.cs

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using YooAsset.Utility;
+
+namespace YooAsset
+{
+	[Serializable]
+	internal sealed class PatchCache
+	{
+		/// <summary>
+		/// 缓存的APP内置版本
+		/// </summary>
+		public string CacheAppVersion = string.Empty;
+
+		/// <summary>
+		/// 读取缓存文件
+		/// 注意：如果文件不存在则创建新的缓存文件
+		/// </summary>
+		public static PatchCache LoadCache()
+		{
+			if (PatchHelper.CheckSandboxCacheFileExist())
+			{
+				Logger.Log("Load patch cache from disk.");
+				string filePath = PatchHelper.GetSandboxCacheFilePath();
+				string jsonData = FileUtility.ReadFile(filePath);
+				return JsonUtility.FromJson<PatchCache>(jsonData);
+			}
+			else
+			{
+				Logger.Log($"Create patch cache to disk : {Application.version}");
+				PatchCache cache = new PatchCache();
+				cache.CacheAppVersion = Application.version;
+				string filePath = PatchHelper.GetSandboxCacheFilePath();
+				string jsonData = JsonUtility.ToJson(cache);
+				FileUtility.CreateFile(filePath, jsonData);
+				return cache;
+			}
+		}
+
+		/// <summary>
+		/// 更新缓存文件
+		/// </summary>
+		public static void UpdateCache()
+		{
+			Logger.Log($"Update patch cache to disk : {Application.version}");
+			PatchCache cache = new PatchCache();
+			cache.CacheAppVersion = Application.version;
+			string filePath = PatchHelper.GetSandboxCacheFilePath();
+			string jsonData = JsonUtility.ToJson(cache);
+			FileUtility.CreateFile(filePath, jsonData);
+		}
+	}
+}