// 获取需要更新的资源路径
private void GetUpdateResPaths(ResListInfo onlineResListInfo, ResListInfo curResListInfo, ref List <SingleResInfo> updateList)
{
if (curResListInfo != null)
{
if (!onlineResListInfo.Ver.Equals(curResListInfo.Ver))
{
// TODO 需要测试一下Linq性能
updateList = onlineResListInfo.Info.Where(onlineData => !curResListInfo.Info.Where(curData => onlineData.Md5 == curData.Md5 &&
onlineData.Path == curData.Path && onlineData.Status == curData.Status && onlineData.Size == curData.Size).Any()).ToList();
}
else
{
foreach (var item in onlineResListInfo.Info) // TODO 检测文件是否需要更新的计算方式 感觉不是很好（后续有更好的方案再改）
{
stringBuilder.Clear();
stringBuilder.Append(PathUtility.Instance.GetPersistentDataPath());
stringBuilder.Append("/");
stringBuilder.Append(item.Path);
string localFileMd5 = ToolUtility.GetFileMD5Str(stringBuilder.ToString());
if (localFileMd5 != item.Md5)
{
updateList.Add(item);
}
}
}
}
else
{
updateList.AddRange(onlineResListInfo.Info);
}
}
// 下载资源列表文件
public async void DownloadResListFile()
{
using (UnityWebRequest webRequest = new UnityWebRequest($"{PathUtility.Instance.GetResListFileUrl()}/{m_ResListFileName}"))
{
await webRequest.SendWebRequest();
if (webRequest.isDone && !webRequest.isNetworkError)
{
ResListInfo onlineResListInfo = ResListInfo.Descriptor.Parser.ParseFrom(webRequest.downloadHandler.data) as ResListInfo;
List <SingleResInfo> updateList = new List <SingleResInfo>(onlineResListInfo.Info.Count); // 预先设置容量
FileStream fs = new FileStream(PathUtility.Instance.GetResListFilePath(), FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
if (File.Exists(PathUtility.Instance.GetResListFilePath())) // 之前更新过小版本
{
int count = (int)fs.Length;
byte[] fileData = new byte[count];
fs.Read(fileData, 0, count);
ResListInfo curResListInfo = ResListInfo.Descriptor.Parser.ParseFrom(fileData) as ResListInfo;
GetUpdateResPaths(onlineResListInfo, curResListInfo, ref updateList);
}
else // 第一次更新小版本
{
GetUpdateResPaths(onlineResListInfo, null, ref updateList);
}
ModifyLocalResFile(updateList, () => {
byte[] onlineData = onlineResListInfo.ToByteArray();
fs.Write(onlineData, 0, onlineData.Length);
fs.Seek(0, SeekOrigin.Begin);
fs.Close();
fs.Dispose();
});
}
else
{
DebugUtility.Instance.Error("请求资源列表文件失败，失败原因为: " + webRequest.error);
}
}
}
