/// <summary>
/// 第5步：递归下载每个版本的所有文件
/// </summary>
private void DownloadVersion()
{
List <FileMD5Node> fileList = new List <FileMD5Node>();
bool bIsCurVersion = false;
int listLength = _downloadFilesList.Count;
int startIndex = _downloadIndex;
FileMD5Node fileNode;
for (int i = startIndex; i < listLength; i++)
{
_downloadIndex = i;
fileNode = _downloadFilesList[i];
if (fileNode._path == "version") //版本分割线
{
if (bIsCurVersion) //当前版本的文件已过滤完成
{
break;
}
bIsCurVersion = true;
_sCurVersion = fileNode._md5;
}
else//要下载的文件
{
fileList.Add(fileNode);
}
}
if (bIsCurVersion == false)//按列表下载资源时，没有找到对应的版本号
{
_versionType = VersionType.Error;
_errorCode = ErrorCode.NotFoundVersion;
return;
}
if (fileList.Count == 0)//当前版本的文件都无需下载的情况
{
downloadVersionCallback(_sCurVersion);
return;
}
_loadVersionFiles = new LoadFileList(fileList, _sCurVersion, _strDownloadUrl);
_loadVersionFiles.EventFinished += new LoadFileList.LoadFinishedHandler(delegate(string sVersion, int loadFileCount)
{
_loadedCount = _loadedCount + loadFileCount;//已下载的总文件数
downloadVersionCallback(sVersion);
});
_loadVersionFiles.EventError += new LoadFileList.LoadErrorHandler(delegate(ErrorCode errorCode)
{
_versionType = VersionType.Error;
_errorCode = errorCode;
return;//失败
});
}
// 下载完指定版本的所有文件时的回调
private void downloadVersionCallback(string sVersion)
{
_loadVersionFiles = null;
int listLength = _downloadFilesList.Count;
SaveLocalVersion(sVersion);
if (_downloadIndex < listLength - 1)
{
DownloadVersion();
}
else//已全部下载完成
{
_versionType = VersionType.None;
}
}
