private int onProgress(BaiduPCS sender, double dltotal, double dlnow, double ultotal, double ulnow, object userdata)
{
ProgressEventArgs args = new ProgressEventArgs((long)ulnow, (long)ultotal);
fireProgress(args);
if (args.Cancel)
{
IsCancelled = true;
return -1;
}
return 0;
}
private void du_onProgress(object sender, ProgressEventArgs e)
{
IProgressable d = (IProgressable)sender;
OperationInfo op = (OperationInfo)d.State;
op.totalSize = e.totalSize;
op.doneSize = e.doneSize;
fireOnProgress(op);
if (op.status != OperationStatus.Processing)
e.Cancel = true;
else if (IsPause)
{
e.Cancel = true;
op.status = OperationStatus.Pending;
}
else if (op.sid != Interlocked.Read(ref sid))
{
e.Cancel = true;
op.status = OperationStatus.Pending;
}
}
protected virtual void fireProgress(ProgressEventArgs args)
{
if (Progress != null)
Progress(this, args);
}
private uint onWrite(BaiduPCS sender, byte[] data, uint contentlength, object userdata)
{
if (IsCancelled)
return 0;
if(data.Length > 0)
{
Stream stream = (Stream)userdata;
stream.Write(data, 0, data.Length);
}
DoneSize += data.Length;
ProgressEventArgs args = new ProgressEventArgs(DoneSize, from.size);
fireProgress(args);
if (args.Cancel)
{
IsCancelled = true;
return 0;
}
return (uint)data.Length;
}
// <returns>返回 0 表示已经到文件结尾，将停止上传。
// 返回 NativeConst.CURL_READFUNC_ABORT 将离开停止上传，并返回上传错误；
// 返回 NativeConst.CURL_READFUNC_PAUSE 将暂停上传。</returns>
private int Read(BaiduPCS sender, out byte[] buf, uint size, uint nmemb, object userdata)
{
Slice slice = (Slice)userdata;
buf = null;
if (slice.tid != Interlocked.Read(ref taskId))//本次任务被取消
{
lock (locker)
{
if (IsCancelled)
slice.status = SliceStatus.Cancelled;
else
slice.status = SliceStatus.Failed;
}
return NativeConst.CURL_READFUNC_ABORT;
}
int sz = (int)(size * nmemb);
if (sz > slice.totalSize - slice.doneSize)
sz = (int)(slice.totalSize - slice.doneSize);
buf = new byte[sz];
if (sz > 0)
{
using (FileStream fs = new FileStream(from, FileMode.Open, FileAccess.Read))
{
fs.Position = slice.start + slice.doneSize;
sz = fs.Read(buf, 0, sz);
}
}
slice.doneSize += sz;
long uploadedSize = 0;
lock (locker)
{
DoneSize += sz;
uploadedSize = DoneSize;
}
ProgressEventArgs args = new ProgressEventArgs(uploadedSize, fromFileInfo.Length);
fireProgress(args);
if (args.Cancel)
{
slice.status = SliceStatus.Cancelled;
return NativeConst.CURL_READFUNC_ABORT;
}
return sz;
}
private uint onWrite(BaiduPCS sender, byte[] data, uint contentlength, object userdata)
{
Slice slice = (Slice)userdata;
if (slice.tid != Interlocked.Read(ref taskId))//本次任务被取消
{
lock (locker)
{
if (IsCancelled)
slice.status = SliceStatus.Cancelled;
else
slice.status = SliceStatus.Failed;
}
return 0;
}
long size = data.Length;
if (size > slice.totalSize - slice.doneSize)
size = slice.totalSize - slice.doneSize;
if (size > 0)
{
bigfile.Update(slice.start + slice.doneSize, data, 0, (int)size);
}
slice.doneSize += size;
lock (locker) DoneSize += size;
if (slice.doneSize == slice.totalSize) //分片已经下载完成
{
slice.status = SliceStatus.Successed;
size = 0;
}
lock (sliceFileLocker) SliceHelper.SaveSliceList(SliceFileName, SliceList); // 保存最新的分片数据
long downloadedSize = 0;
lock (locker) downloadedSize = DoneSize;
ProgressEventArgs args = new ProgressEventArgs(downloadedSize, from.size);
fireProgress(args);
if (args.Cancel)
{
slice.status = SliceStatus.Cancelled;
return 0;
}
return (uint)size;
}
private uint onWrite(BaiduPCS sender, byte[] data, uint contentlength, object userdata)
{
Slice slice = (Slice)userdata;
try
{
if (slice.tid != Interlocked.Read(ref taskId))//本次任务被取消
{
lock (locker)
{
if (IsCancelled)
{
slice.status = SliceStatus.Cancelled;
}
else
{
slice.status = SliceStatus.Failed;
}
}
return(0);
}
long size = data.Length;
if (size > slice.totalSize - slice.doneSize)
{
size = slice.totalSize - slice.doneSize;
}
if (size > 0)
{
lock (cache)
cache.Add(slice.start + slice.doneSize, data, (int)size);
}
slice.doneSize += size;
lock (locker) DoneSize += size;
if (slice.doneSize == slice.totalSize) //分片已经下载完成
{
slice.status = SliceStatus.Successed;
size = 0;
}
lock (cache)
{
if (cache.TotalSize >= AppSettings.MaxCacheSize * 1024)
{
cache.Flush();
cache.Reset();
SliceHelper.SaveSliceList(SliceFileName, SliceList); // 保存最新的分片数据
}
}
long downloadedSize = 0;
lock (locker) downloadedSize = DoneSize;
ProgressEventArgs args = new ProgressEventArgs(downloadedSize, from.size);
fireProgress(args);
if (args.Cancel)
{
slice.status = SliceStatus.Cancelled;
lock (locker) Error = new Exception("Cancelled");
return(0);
}
return((uint)size);
}
catch (Exception ex)
{
lock (locker) Error = ex;
slice.status = SliceStatus.Error;
}
return(0);
}