103 lines
3.6 KiB
C#
103 lines
3.6 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 System.Diagnostics;
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namespace YooAsset
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{
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internal static class CacheHelper
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{
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/// <summary>
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/// 禁用Unity缓存系统在WebGL平台
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/// </summary>
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public static bool DisableUnityCacheOnWebGL = false;
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/// <summary>
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/// 验证缓存文件（子线程内操作）
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/// </summary>
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public static EVerifyResult VerifyingCacheFile(VerifyCacheFileElement element, EVerifyLevel verifyLevel)
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{
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try
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{
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if (verifyLevel == EVerifyLevel.Low)
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{
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if (File.Exists(element.InfoFilePath) == false)
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return EVerifyResult.InfoFileNotExisted;
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if (File.Exists(element.DataFilePath) == false)
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return EVerifyResult.DataFileNotExisted;
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return EVerifyResult.Succeed;
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}
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else
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{
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if (File.Exists(element.InfoFilePath) == false)
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return EVerifyResult.InfoFileNotExisted;
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// 解析信息文件获取验证数据
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CacheFileInfo.ReadInfoFromFile(element.InfoFilePath, out element.DataFileCRC, out element.DataFileSize);
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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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return VerifyingInternal(element.DataFilePath, element.DataFileSize, element.DataFileCRC, verifyLevel);
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}
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/// <summary>
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/// 验证下载文件（子线程内操作）
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/// </summary>
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public static EVerifyResult VerifyingTempFile(VerifyTempFileElement element)
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{
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return VerifyingInternal(element.TempDataFilePath, element.FileSize, element.FileCRC, EVerifyLevel.High);
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}
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/// <summary>
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/// 验证记录文件（主线程内操作）
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/// </summary>
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public static EVerifyResult VerifyingRecordFile(CacheManager cache, string cacheGUID)
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{
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var wrapper = cache.TryGetWrapper(cacheGUID);
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if (wrapper == null)
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return EVerifyResult.CacheNotFound;
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EVerifyResult result = VerifyingInternal(wrapper.DataFilePath, wrapper.DataFileSize, wrapper.DataFileCRC, EVerifyLevel.High);
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return result;
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}
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private static EVerifyResult VerifyingInternal(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.DataFileNotExisted;
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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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} |