private void SFTPOpenDirectory_Core(string fullPath, bool expand)
{
Log("Retrieving directory entries...: " + fullPath);
SFTPFileInfo[] entries = _sftp.GetDirectoryEntries(fullPath);
for (int i = 0; i < entries.Length; i++) {
SFTPFileInfo ent = entries[i];
if (UnixPermissions.IsSymbolicLink(ent.Permissions)) {
// If the symbolic link points a directory,
// replace the file information so as to open the node.
string path = CombineUnixPath(fullPath, ent.FileName);
SFTPFileAttributes attr;
try {
attr = _sftp.GetFileInformations(path, false);
}
catch (SFTPClientException e) {
if (!IsSFTPError(e, SFTPStatusCode.SSH_FX_NO_SUCH_FILE))
throw;
// file missing or dead symbolic link ?
attr = null;
}
if (attr != null) {
if (UnixPermissions.IsDirectory(attr.Permissions)) {
entries[i] = new SFTPFileInfo(ent.FileName, ent.LongName, attr);
}
}
}
}
this.Invoke((MethodInvoker)delegate() {
treeViewRemote.BeginUpdate();
TreeNode dirNode = MakeDirectoryTree(fullPath, expand);
UpdateTreeDirectoryEntries(dirNode, entries);
dirNode.EnsureVisible();
treeViewRemote.EndUpdate();
});
Log("...Done");
}
private void UpdateTreeDirectoryEntries(TreeNode directoryNode, SFTPFileInfo[] entries)
{
TreeNodeCollection children = directoryNode.Nodes;
Dictionary<string, SFTPFileInfo> newEntries = new Dictionary<string, SFTPFileInfo>();
foreach (SFTPFileInfo ent in entries) {
if (IsDots(ent.FileName))
continue;
newEntries.Add(ent.FileName, ent);
}
List<TreeNode> nodesToDelete = new List<TreeNode>();
foreach (TreeNode node in children) {
if (!newEntries.ContainsKey(node.Name)) {
nodesToDelete.Add(node);
}
}
foreach (TreeNode node in nodesToDelete) {
children.Remove(node);
}
foreach (SFTPFileInfo ent in entries) {
if (IsDots(ent.FileName))
continue;
TreeNode entNode = children[ent.FileName];
if (entNode == null) {
entNode = CreateFileOrDirectoryNode(ent);
children.Add(entNode);
}
else {
UpdateTreeNode(entNode, ent);
}
}
}
private string GetTooltipText(SFTPFileInfo fileInfo)
{
return new StringBuilder()
.Append(UnixPermissions.Format(fileInfo.Permissions))
.Append(' ')
.Append(fileInfo.FileSize)
.Append(' ')
.Append(fileInfo.FileName)
.ToString();
}
private TreeNode CreateFileOrDirectoryNode(SFTPFileInfo fileInfo)
{
NodeTag nodeTag = NodeTag.CreateForFileOrDirectory(fileInfo);
int iconIndex = GetNodeImageIndex(nodeTag.Type);
TreeNode node = new TreeNode(fileInfo.FileName, iconIndex, iconIndex);
node.Name = fileInfo.FileName; // TreeNodeCollection uses this as a key.
node.Tag = nodeTag;
node.ToolTipText = GetTooltipText(fileInfo);
return node;
}
public static NodeTag CreateForFileOrDirectory(SFTPFileInfo fileInfo)
{
NodeType nodeType;
string prefix;
if (UnixPermissions.IsDirectory(fileInfo.Permissions)) {
nodeType = NodeType.Directory;
prefix = "D:";
}
else if (UnixPermissions.IsSymbolicLink(fileInfo.Permissions)) {
nodeType = NodeType.SymbolicLink;
prefix = "F:";
}
else {
nodeType = NodeType.File;
prefix = "F:";
}
return new NodeTag(nodeType, prefix + fileInfo.FileName, fileInfo);
}
private NodeTag(NodeType nodeType, string sortKey, SFTPFileInfo fileInfo)
{
this.Type = nodeType;
this.SortKey = sortKey;
this.FileInfo = fileInfo;
}
private void UpdateTreeNode(TreeNode node, SFTPFileInfo fileInfo)
{
NodeTag nodeTag = NodeTag.CreateForFileOrDirectory(fileInfo);
node.SelectedImageIndex = node.ImageIndex = GetNodeImageIndex(nodeTag.Type);
node.Tag = nodeTag;
node.ToolTipText = GetTooltipText(fileInfo);
}
