// 下载动态文件
// 动态文件就是一直在不断增长的文件。允许一边增长一边下载
void menu_downloadDynamicFile(object sender, System.EventArgs e)
{
string strError = "";
if (this.DownloadFiles == null)
{
strError = "尚未绑定 DownloadFiles 事件";
goto ERROR1;
}
List <TreeNode> nodes = this.GetCheckedFileNodes();
if (nodes.Count == 0)
{
strError = "尚未选择要下载的配置文件节点";
goto ERROR1;
}
#if NO
if (this.SelectedNode.ImageIndex != RESTYPE_FILE)
{
strError = "所选择的节点不是配置文件类型。请选择要下载的配置文件节点";
goto ERROR1;
}
#endif
List <string> paths = new List <string>();
foreach (TreeNode node in nodes)
{
string strPath = GetNodePath(node);
string strExt = Path.GetExtension(strPath);
if (strExt == ".~state")
{
strError = "不允许下载扩展名为 .~state 的状态文件 (" + strPath + ")";
goto ERROR1;
}
paths.Add(strPath);
}
DownloadFilesEventArgs e1 = new DownloadFilesEventArgs();
e1.FileNames = paths;
this.DownloadFiles(this, e1);
if (string.IsNullOrEmpty(e1.ErrorInfo) == false)
{
goto ERROR1;
}
#if NO
FolderBrowserDialog dir_dlg = new FolderBrowserDialog();
dir_dlg.Description = "请指定下载目标文件夹";
dir_dlg.RootFolder = Environment.SpecialFolder.MyComputer;
dir_dlg.ShowNewFolderButton = true;
dir_dlg.SelectedPath = _usedDownloadFolder;
if (dir_dlg.ShowDialog() != DialogResult.OK)
{
return;
}
_usedDownloadFolder = dir_dlg.SelectedPath;
string strTargetPath = Path.Combine(dir_dlg.SelectedPath, Path.GetFileName(strPath));
bool bAppend = false; // 是否继续下载?
// 观察目标文件是否已经存在
if (File.Exists(strTargetPath))
{
DialogResult result = MessageBox.Show(this,
"目标文件 '" + strTargetPath + "' 已经存在。\r\n\r\n是否继续下载未完成部分?\r\n[是：从断点继续下载; 否: 重新从头下载; 取消：放弃下载]",
"KernelResTree",
MessageBoxButtons.YesNoCancel,
MessageBoxIcon.Question,
MessageBoxDefaultButton.Button1);
if (result == DialogResult.Cancel)
{
return;
}
if (result == DialogResult.Yes)
{
bAppend = true;
}
}
LibraryChannel channel = null;
TimeSpan old_timeout = new TimeSpan(0);
channel = this.CallGetChannel(true);
old_timeout = channel.Timeout;
channel.Timeout = new TimeSpan(0, 5, 0);
FileDownloadDialog dlg = new FileDownloadDialog();
dlg.Font = this.Font;
dlg.SourceFilePath = strPath;
dlg.TargetFilePath = strTargetPath;
// dlg.TopMost = true;
dlg.Show(this);
DynamicDownloader downloader = new DynamicDownloader(channel,
strPath,
strTargetPath);
downloader.Tag = dlg;
_downloaders.Add(downloader);
downloader.Closed += new EventHandler(delegate(object o1, EventArgs e1)
{
if (channel != null)
{
channel.Timeout = old_timeout;
this.CallReturnChannel(channel, true);
channel = null;
}
DisplayDownloaderErrorInfo(downloader);
RemoveDownloader(downloader);
this.Invoke((Action)(() =>
{
dlg.Close();
}));
});
downloader.ProgressChanged += new DownloadProgressChangedEventHandler(delegate(object o1, DownloadProgressChangedEventArgs e1)
{
if (dlg.IsDisposed == false)
{
dlg.SetProgress(e1.BytesReceived, e1.TotalBytesToReceive);
}
});
dlg.FormClosed += new FormClosedEventHandler(delegate(object o1, FormClosedEventArgs e1)
{
downloader.Cancel();
if (channel != null)
{
channel.Timeout = old_timeout;
this.CallReturnChannel(channel, true);
channel = null;
}
DisplayDownloaderErrorInfo(downloader);
RemoveDownloader(downloader);
});
downloader.StartDownload(bAppend);
#endif
return;
ERROR1:
MessageBox.Show(this, strError);
}
void GetMd5(DownloadFilesEventArgs e)
{
string strError = "";
List <string> lines = new List <string>();
CancellationTokenSource cancel = new CancellationTokenSource();
// 出现一个对话框，允许中断获取 MD5 的过程
FileDownloadDialog dlg = null;
this.Invoke((Action)(() =>
{
dlg = new FileDownloadDialog();
dlg.Font = this.Font;
dlg.Text = $"正在获取 MD5";
// dlg.SourceFilePath = strTargetPath;
dlg.TargetFilePath = null;
// 让 Progress 变为走马灯状态
dlg.StartMarquee();
}));
dlg.FormClosed += new FormClosedEventHandler(delegate(object o1, FormClosedEventArgs e1)
{
cancel.Cancel();
});
this.Invoke((Action)(() =>
{
dlg.Show(this);
}));
var channel = Program.MainForm.GetChannel(this.ServerUrl);
// var old_timeout = channel.Timeout;
channel.Timeout = new TimeSpan(0, 25, 0);
// this.ShowMessage("正在获取 MD5 ...");
try
{
foreach (string filepath in e.FileNames)
{
// this.ShowMessage($"正在获取服务器文件 {filepath} 的 MD5 ...");
dlg.SetProgress($"正在获取服务器文件 {filepath} 的 MD5 ...", 0, 0);
// 检查 MD5
// return:
// -1 出错
// 0 文件没有找到
// 1 文件找到
int nRet = DynamicDownloader.GetServerFileMD5ByTask(
channel,
null, // this.Stop,
filepath,
(MessagePromptEventHandler)null,
cancel.Token,
out byte[] server_md5,
out strError);
if (nRet != 1)
{
strError = "探测服务器端文件 '" + filepath + "' MD5 时出错: " + strError;
goto ERROR1;
}
lines.Add($"文件 {filepath} 的 MD5 为 {Convert.ToBase64String(server_md5)}");
}
}
catch (Exception ex)
{
strError = ex.Message;
goto ERROR1;
}
finally
{
//channel.Timeout = old_timeout;
Program.MainForm.ReturnChannel(channel);
// this.ClearMessage();
this.Invoke((Action)(() =>
{
dlg.Close();
}));
cancel.Dispose();
}
this.Invoke((Action)(() =>
{
MessageDialog.Show(this, StringUtil.MakePathList(lines, "\r\n"));
}));
return;
ERROR1:
ShowMessageBox(strError);
}
