/// <summary>
/// 刷新下载状态
/// </summary>
private void RefreshList()
{
TotalProgressChanged();
//根据numOnce及正在下载的情况生成下载
int downloadingCount = webs.Count;
for (int j = 0; j < NumOnce - downloadingCount; j++)
{
if (numLeft > 0)
{
DownloadItem dlitem = downloadItems[downloadItems.Count - numLeft];
string url = dlitem.Url;
string file = dlitem.FileName.Replace("\r\n", "");
string path = GetLocalPath(dlitem);
//检查目录长度
if (path.Length > 248)
{
downloadItems[downloadItems.Count - numLeft].StatusE = DLStatus.Failed;
downloadItems[downloadItems.Count - numLeft].Size = "路径太长";
WriteErrText(url + ": 路径太长");
j--;
}
else
{
dlitem.LocalFileName = ReplaceInvalidPathChars(file, path, 0);
file = dlitem.LocalName = path + dlitem.LocalFileName;
//检查全路径长度
if (file.Length > 258)
{
downloadItems[downloadItems.Count - numLeft].StatusE = DLStatus.Failed;
downloadItems[downloadItems.Count - numLeft].Size = "路径太长";
WriteErrText(url + ": 路径太长");
j--;
}
}
if (File.Exists(file))
{
downloadItems[downloadItems.Count - numLeft].StatusE = DLStatus.IsHave;
downloadItems[downloadItems.Count - numLeft].Size = "已存在跳过";
j--;
}
else if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
else
{
downloadItems[downloadItems.Count - numLeft].StatusE = DLStatus.DLing;
DownloadTask task = new DownloadTask(url, file, MainWindow.IsNeedReferer(url), dlitem.NoVerify);
webs.Add(url, task);
//异步下载开始
System.Threading.Thread thread = new System.Threading.Thread(new System.Threading.ParameterizedThreadStart(Download));
thread.Start(task);
}
numLeft--;
}
else
{
break;
}
}
RefreshStatus();
}
//============================== Menu Function ===================================
private void ExecuteDownloadListTask(DLWorkMode dlworkmode)
{
int selectcs, delitemfile = 0;
List <DownloadItem> selected = new List <DownloadItem>();
if (dlworkmode == DLWorkMode.RetryAll || dlworkmode == DLWorkMode.StopAll || dlworkmode == DLWorkMode.RemoveAll)
{
foreach (object o in dlList.Items)
{
//转存集合，防止selected改变
DownloadItem item = (DownloadItem)o;
selected.Add(item);
}
}
else
{
foreach (object o in dlList.SelectedItems)
{
DownloadItem item = (DownloadItem)o;
selected.Add(item);
}
}
selectcs = selected.Count;
string lpath = "";
DirectoryInfo di;
foreach (DownloadItem item in selected)
{
switch (dlworkmode)
{
case DLWorkMode.Retry:
case DLWorkMode.RetryAll:
if (item.StatusE == DLStatus.Failed || item.StatusE == DLStatus.Cancel || item.StatusE == DLStatus.IsHave)
{
numLeft = numLeft > selectcs ? selectcs : numLeft;
downloadItems.Remove(item);
downloadItemsDic.Remove(item.Url);
AddDownload(new MiniDownloadItem[] {
new MiniDownloadItem(item.FileName, item.Url, item.Host, item.Author, item.LocalName, item.LocalFileName,
item.Id, item.NoVerify)
});
}
break;
case DLWorkMode.Stop:
case DLWorkMode.StopAll:
if (item.StatusE == DLStatus.DLing || item.StatusE == DLStatus.Wait)
{
if (webs.ContainsKey(item.Url))
{
webs[item.Url].IsStop = true;
webs.Remove(item.Url);
}
else
{
numLeft--;
}
if (dlworkmode == DLWorkMode.StopAll)
{
numLeft = 0;
}
item.StatusE = DLStatus.Cancel;
item.Size = "已取消";
try
{
File.Delete(item.LocalFileName + DLEXT);
lpath = GetLocalPath(item);
di = new DirectoryInfo(lpath);
if (di.GetFiles().Length + di.GetDirectories().Length < 1)
{
Directory.Delete(lpath);
}
}
catch { }
}
break;
case DLWorkMode.Del:
case DLWorkMode.Remove:
case DLWorkMode.RemoveAll:
if (dlworkmode == DLWorkMode.Del && delitemfile < 1)
{
if (MessageBox.Show("QwQ 真的要把任务和文件一起删除么？",
MainWindow.ProgramName,
MessageBoxButton.YesNo,
MessageBoxImage.Warning) == MessageBoxResult.No)
{
delitemfile = 2;
}
else
{
delitemfile = 1;
}
}
if (delitemfile > 1)
{
break;
}
if (item.StatusE == DLStatus.DLing)
{
if (webs.ContainsKey(item.Url))
{
webs[item.Url].IsStop = true;
webs.Remove(item.Url);
}
}
else if (item.StatusE == DLStatus.Success || item.StatusE == DLStatus.IsHave)
{
numSaved = numSaved > 0 ? --numSaved : 0;
}
else if (item.StatusE == DLStatus.Wait || item.StatusE == DLStatus.Cancel)
{
numLeft = numLeft > 0 ? --numLeft : 0;
}
downloadItems.Remove(item);
downloadItemsDic.Remove(item.Url);
//删除文件
string fname = item.LocalName;
if (dlworkmode == DLWorkMode.Del)
{
if (File.Exists(fname))
{
File.Delete(fname);
}
lpath = GetLocalPath(item);
di = new DirectoryInfo(lpath);
if (di.GetFiles().Length + di.GetDirectories().Length < 1)
{
Directory.Delete(lpath);
}
}
break;
}
}
if (dlworkmode == DLWorkMode.Stop || dlworkmode == DLWorkMode.Remove)
{
RefreshList();
}
if (dlworkmode == DLWorkMode.Remove)
{
RefreshStatus();
}
}
/// <summary>
/// 下载，另一线程
/// </summary>
/// <param name="o"></param>
private void Download(object o)
{
DownloadTask task = (DownloadTask)o;
FileStream fs = null;
Stream str = null;
SessionClient sc = new SessionClient();
System.Net.WebResponse res = null;
double downed = 0;
DownloadItem item = downloadItemsDic[task.Url];
try
{
res = sc.GetWebResponse(
task.Url,
MainWindow.WebProxy,
task.NeedReferer
);
/////////开始写入文件
str = res.GetResponseStream();
byte[] bytes = new byte[5120];
fs = new FileStream(task.SaveLocation + DLEXT, FileMode.Create);
int bytesReceived = 0;
DateTime last = DateTime.Now;
int osize = str.Read(bytes, 0, bytes.Length);
downed = osize;
while (!task.IsStop && osize > 0)
{
fs.Write(bytes, 0, osize);
bytesReceived += osize;
DateTime now = DateTime.Now;
double speed = -1;
if ((now - last).TotalSeconds > 0.6)
{
speed = downed / (now - last).TotalSeconds / 1024.0;
downed = 0;
last = now;
}
Dispatcher.Invoke(new DownloadHandler(web_DownloadProgressChanged),
res.ContentLength, bytesReceived / (double)res.ContentLength * 100.0, task.Url, speed);
osize = str.Read(bytes, 0, bytes.Length);
downed += osize;
}
}
catch (Exception ex)
{
//Dispatcher.Invoke(new UIdelegate(delegate(object sender) { StopLoadImg(re.Key, re.Value); }), "");
task.IsStop = true;
Dispatcher.Invoke(new VoidDel(delegate()
{
//下载失败
if (downloadItemsDic.ContainsKey(task.Url))
{
item.StatusE = DLStatus.Failed;
item.Size = "下载失败";
WriteErrText(task.Url);
WriteErrText(task.SaveLocation);
WriteErrText(ex.Message + "\r\n");
try
{
if (fs != null)
{
fs.Close();
}
if (str != null)
{
str.Close();
}
if (res != null)
{
res.Close();
}
File.Delete(task.SaveLocation + DLEXT);
DelDLItemNullDirector(item);
}
catch { }
}
}));
}
finally
{
if (fs != null)
{
fs.Close();
}
if (str != null)
{
str.Close();
}
if (res != null)
{
res.Close();
}
}
if (task.IsStop)
{
//任务被取消
Dispatcher.Invoke(new VoidDel(delegate()
{
if (downloadItemsDic.ContainsKey(task.Url))
{
if (!dlerrtxt.Contains(item.Size))
{
item.StatusE = DLStatus.Cancel;
}
}
}));
try
{
File.Delete(task.SaveLocation + DLEXT);
DelDLItemNullDirector(item);
}
catch { }
}
else
{
//下载成功完成
Dispatcher.Invoke(new VoidDel(delegate()
{
try
{
//DownloadTask task1 = obj as DownloadTask;
//判断完整性
if (!item.NoVerify && 100 - item.Progress > 0.001)
{
task.IsStop = true;
item.StatusE = DLStatus.Failed;
item.Size = "下载未完成";
try
{
File.Delete(task.SaveLocation + DLEXT);
DelDLItemNullDirector(item);
}
catch { }
}
else
{
//修改后缀名
File.Move(task.SaveLocation + DLEXT, task.SaveLocation);
item.Progress = 100.0;
item.StatusE = DLStatus.Success;
//downloadItemsDic[task.Url].Size = (downed > 1048576
//? (downed / 1048576.0).ToString("0.00MB")
//: (downed / 1024.0).ToString("0.00KB"));
numSaved++;
}
}
catch { }
}));
}
//下载结束
Dispatcher.Invoke(new VoidDel(delegate()
{
webs.Remove(task.Url);
RefreshList();
}));
}
