public override void Download()
{
if (Downloading)
{
throw new Exception("Can't download, since the previous download is not complete.");
}
DoneSize = 0;
Success = false;
IsCancelled = false;
Error = null;
Downloading = true;
SliceFileName = null;
SliceList = null;
bigfile = null;
try
{
SliceFileName = "download-" + from.md5 + ".slice";
SliceFileName = Path.Combine(Path.Combine(WorkFolder, pcs.getUID()), SliceFileName);
StateFileNameDecideEventArgs args = new StateFileNameDecideEventArgs()
{
SliceFileName = SliceFileName
};
fireStateFileNameDecide(args);
SliceFileName = args.SliceFileName;
CreateOrRestoreSliceList(); // 创建或还原分片列表
CreateDirectory(to); //创建目录
CreateLocalFile(); // 如果需要则创建本地文件
bigfile = new BigFileHelper(to, from.size); //映射文件到内存
foreach (Slice slice in SliceList)
{
if (slice.status != SliceStatus.Successed)
{
slice.status = SliceStatus.Pending; //重新下载未成功的分片
slice.doneSize = 0;
}
else
{
DoneSize += slice.doneSize;
}
}
DownloadSliceList(); // 启动线程来下载分片
Wait(); // 等待所有线程退出
CheckResult(); // 检查下载结果
}
catch (Exception ex)
{
Success = false;
IsCancelled = false;
Error = ex;
}
if (bigfile != null)
{
bigfile.Dispose();
bigfile = null;
}
if (Success)
{
SliceHelper.DeleteSliceFile(SliceFileName);
}
Downloading = false;
fireCompleted(new CompletedEventArgs(Success, IsCancelled, Error));
}
public override void Upload()
{
if (Uploading)
{
throw new Exception("Can't upload, since the previous upload is not complete.");
}
DoneSize = 0;
Success = false;
IsCancelled = false;
Error = null;
Uploading = true;
SliceFileName = null;
SliceList = null;
fromFileInfo = null;
try
{
BaiduPCS pcs = this.pcs.clone();
string key;
if (string.IsNullOrEmpty(FileMD5))
{
string validate_md5, validate2_md5;
fromFileInfo = new FileInfo(from);
if (!pcs.md5(from, 0, MIN_SLICE_SIZE, out validate_md5))
{
throw new Exception("Can't calculate md5 for " + from + ".");
}
if (!pcs.md5(from, fromFileInfo.Length - MIN_SLICE_SIZE, MIN_SLICE_SIZE, out validate2_md5))
{
throw new Exception("Can't calculate md5 for " + from + ".");
}
key = from + " => " + to + ", size=" + fromFileInfo.Length.ToString() + ", validate1_md5=" + validate_md5 + ", validate2_md5=" + validate2_md5;
key = Utils.md5(key.ToLower());
}
else
{
key = FileMD5;
}
SliceFileName = "upload-" + key + ".slice";
SliceFileName = Path.Combine(WorkFolder, pcs.getUID(), SliceFileName);
StateFileNameDecideEventArgs args = new StateFileNameDecideEventArgs()
{
SliceFileName = SliceFileName
};
fireStateFileNameDecide(args);
SliceFileName = args.SliceFileName;
CreateOrRestoreSliceList(); // 创建或还原分片列表
foreach (Slice slice in SliceList)
{
if (slice.status != SliceStatus.Successed)
{
slice.status = SliceStatus.Pending; //重新上传未成功的分片
slice.doneSize = 0;
}
else
{
DoneSize += slice.doneSize;
}
}
UploadSliceList(); // 启动线程来下载分片
Wait(); // 等待所有线程退出
List <string> md5list = new List <string>();
if (CheckResult(md5list)) // 检查下载结果
{
Result = pcs.create_superfile(to, md5list.ToArray(), IsOverWrite);
if (!Result.IsEmpty)
{
Success = true;
IsCancelled = false;
}
else
{
Success = false;
IsCancelled = false;
Error = new Exception(pcs.getError());
}
}
else
{
Success = false;
}
}
catch (Exception ex)
{
Success = false;
IsCancelled = false;
Error = ex;
}
if (Success)
{
SliceHelper.DeleteSliceFile(SliceFileName);
}
Uploading = false;
fireCompleted(new CompletedEventArgs(Success, IsCancelled, Error));
}