133 lines
2.7 KiB
C#
133 lines
2.7 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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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 HashSet<PatchBundle> _cacheBundles = new HashSet<PatchBundle>();
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private readonly static Dictionary<string, string> _cachedHashList = new Dictionary<string, string>(1000);
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private static EVerifyLevel _verifyLevel = EVerifyLevel.High;
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public static void Initialize(EVerifyLevel verifyLevel)
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{
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_verifyLevel = verifyLevel;
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}
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public static void DestroyAll()
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{
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_cacheBundles.Clear();
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}
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public static void WriteInfoFileForCachedFile()
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{
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}
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public static void ReadInfoFileForCachedFile()
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{
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}
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public static void GetCachingDiskSpaceUsed()
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{
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}
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public static void GetCachingDiskSpaceFree()
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{
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}
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public static bool IsCached(PatchBundle patchBundle)
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{
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return false;
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}
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public static void ClearCache()
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{
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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 ContainsVerifyFile(string fileHash)
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{
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if (_cachedHashList.ContainsKey(fileHash))
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{
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string fileName = _cachedHashList[fileHash];
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string filePath = SandboxHelper.MakeCacheFilePath(fileName);
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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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_cachedHashList.Remove(fileHash);
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YooLogger.Error($"Cache file is missing : {fileName}");
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return false;
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}
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}
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else
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{
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return false;
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}
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}
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/// <summary>
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/// 缓存验证过的文件
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/// </summary>
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public static void CacheVerifyFile(string fileHash, string fileName)
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{
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if (_cachedHashList.ContainsKey(fileHash) == false)
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{
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YooLogger.Log($"Cache verify file : {fileName}");
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_cachedHashList.Add(fileHash, fileName);
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}
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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 bool CheckContentIntegrity(string filePath, long fileSize, string fileCRC)
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{
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return CheckContentIntegrity(_verifyLevel, filePath, fileSize, fileCRC);
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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 bool CheckContentIntegrity(EVerifyLevel verifyLevel, string filePath, long fileSize, string fileCRC)
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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 false;
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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 false;
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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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return crc == fileCRC;
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}
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else
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{
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return true;
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}
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}
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catch (Exception)
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{
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return false;
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}
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}
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}
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} |