124 lines
3.0 KiB
C#
124 lines
3.0 KiB
C#
using System;
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using System.IO;
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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namespace YooAsset
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{
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internal static class CacheSystem
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{
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private readonly static Dictionary<string, PatchBundle> _cachedDic = new Dictionary<string, PatchBundle>(1000);
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/// <summary>
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/// 初始化时的验证级别
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/// </summary>
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public static EVerifyLevel InitVerifyLevel { set; get; } = EVerifyLevel.Low;
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/// <summary>
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/// 清空所有数据
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/// </summary>
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public static void ClearAll()
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{
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_cachedDic.Clear();
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}
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/// <summary>
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/// 查询是否为验证文件
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/// 注意：被收录的文件完整性是绝对有效的
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/// </summary>
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public static bool IsCached(PatchBundle patchBundle)
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{
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string fileHash = patchBundle.FileHash;
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if (_cachedDic.ContainsKey(fileHash))
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{
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string filePath = patchBundle.CachedFilePath;
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if (File.Exists(filePath))
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{
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return true;
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}
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else
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{
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_cachedDic.Remove(fileHash);
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YooLogger.Error($"Cache file is missing : {filePath}");
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return false;
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}
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}
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else
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{
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return false;
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}
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}
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/// <summary>
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/// 缓存补丁包文件
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/// </summary>
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public static void CacheBundle(PatchBundle patchBundle)
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{
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string fileHash = patchBundle.FileHash;
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if (_cachedDic.ContainsKey(fileHash) == false)
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{
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string filePath = patchBundle.CachedFilePath;
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YooLogger.Log($"Cache verify file : {filePath}");
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_cachedDic.Add(fileHash, patchBundle);
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}
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}
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/// <summary>
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/// 验证补丁包文件
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/// </summary>
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public static EVerifyResult VerifyBundle(PatchBundle patchBundle, EVerifyLevel verifyLevel)
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{
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return VerifyContentInternal(patchBundle.CachedFilePath, patchBundle.FileSize, patchBundle.FileCRC, verifyLevel);
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}
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/// <summary>
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/// 验证并缓存补丁包文件
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/// </summary>
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public static EVerifyResult VerifyAndCacheBundle(PatchBundle patchBundle, EVerifyLevel verifyLevel)
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{
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var verifyResult = VerifyContentInternal(patchBundle.CachedFilePath, patchBundle.FileSize, patchBundle.FileCRC, verifyLevel);
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if (verifyResult == EVerifyResult.Succeed)
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CacheBundle(patchBundle);
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return verifyResult;
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}
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/// <summary>
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/// 验证文件完整性
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/// </summary>
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public static EVerifyResult VerifyContentInternal(string filePath, long fileSize, string fileCRC, EVerifyLevel verifyLevel)
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{
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try
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{
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if (File.Exists(filePath) == false)
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return EVerifyResult.FileNotExisted;
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// 先验证文件大小
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long size = FileUtility.GetFileSize(filePath);
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if (size < fileSize)
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return EVerifyResult.FileNotComplete;
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else if (size > fileSize)
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return EVerifyResult.FileOverflow;
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// 再验证文件CRC
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if (verifyLevel == EVerifyLevel.High)
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{
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string crc = HashUtility.FileCRC32(filePath);
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if (crc == fileCRC)
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return EVerifyResult.Succeed;
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else
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return EVerifyResult.FileCrcError;
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}
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else
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{
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return EVerifyResult.Succeed;
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}
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}
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catch (Exception)
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{
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return EVerifyResult.Exception;
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}
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}
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}
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} |