public DirectoryItem(VFS.DirectoryInfo info)
{
this.modifyTime = new DateTime((long)info.modifyTime);
this.creationTime = new DateTime((long)info.creationTime);
this.name = info.name;
this.path = info.path;
this.isDirectory = info.isDirectory;
this.flag = info.flags;
this.owner = info.owner;
this.inodeIndex = info.inodeIndex;
this.blockPreserved = info.inode.blockPreserved;
this.refCount = info.inode.linkCount;
if (info.isDirectory)
{
this.extension = "文件夹";
this.icon = ShellFileInfo.GetFolderIcon(ShellFileInfo.IconSize.Small, ShellFileInfo.FolderType.Closed);
this.size = "";
}
else
{
this.extension = ShellFileInfo.GetFileTypeDescription(this.name);
this.icon = ShellFileInfo.GetFileIcon(this.name, ShellFileInfo.IconSize.Small, false);
this.size = Utils.FormatSize(info.size);
}
}
/// <summary>
/// 创建一个文件夹
/// </summary>
/// <param name="name"></param>
public void CreateDirectory(String name)
{
VFS.AssertNameValid(name);
INode inode = vfs.AllocateINode(1, 2333);
if (!dir.Add(name, new INodeDirectory(vfs, inode)))
{
throw new Exception("创建文件夹失败");
}
}
/// <summary>
/// 重命名文件或文件夹
/// </summary>
/// <param name="oldName"></param>
/// <param name="newName"></param>
public void Rename(String oldName, String newName)
{
VFS.AssertNameValid(oldName);
VFS.AssertNameValid(newName);
if (!dir.Contains(oldName))
{
throw new Exception("文件或文件夹未找到");
}
if (dir.Contains(newName))
{
throw new Exception("新文件名与现有文件或文件夹名称冲突");
}
if (!dir.Rename(oldName, newName))
{
throw new Exception("重命名失败");
}
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
if (Properties.Settings.Default["vfsfile"] == null || ((String)(Properties.Settings.Default["vfsfile"])).Length == 0)
{
var r = System.Windows.Forms.MessageBox.Show("首次启动 VFS 需要在磁盘上建立一个虚拟磁盘镜像文件，镜像文件大小为 1GB。\n点击确定后请选择一个可以写入的位置来建立此文件，点击取消关闭程序。", "磁盘镜像文件未找到", System.Windows.Forms.MessageBoxButtons.OKCancel, System.Windows.Forms.MessageBoxIcon.Information);
if (r == System.Windows.Forms.DialogResult.Cancel)
{
Close();
return;
}
using (var dialog = new System.Windows.Forms.SaveFileDialog())
{
dialog.Title = "保存磁盘镜像文件";
dialog.FileName = "vfs.bin";
var result = dialog.ShowDialog();
if (result == System.Windows.Forms.DialogResult.Cancel)
{
Close();
return;
}
else
{
try
{
device = new FileAdapter(dialog.FileName, 1 << 10 << 10 << 10);
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show("打开镜像文件失败，可能您没有权限在该位置写入文件，或您内存不足。程序即将退出，请重新打开程序。");
Close();
return;
}
// 更新配置
Properties.Settings.Default["vfsfile"] = dialog.FileName;
Properties.Settings.Default.Save();
}
}
}
else
{
device = new FileAdapter((String)Properties.Settings.Default["vfsfile"], 1 << 10 << 10 << 10);
}
vfs = new VFS(device);
if (!vfs.IsFormated())
{
var result = System.Windows.Forms.MessageBox.Show("该磁盘镜像文件尚未格式化，是否格式化?", "VFS", System.Windows.Forms.MessageBoxButtons.YesNo);
if (result == System.Windows.Forms.DialogResult.No)
{
Close();
return;
}
vfs.Format(device.Size() >> 10, 4);
// 写入一个示例文件
var file = vfs.NewFile("/README.txt", VFS.FileMode.Create);
file.Write(Encoding.UTF8.GetBytes("Hello world！\r\n\r\n这个文件是格式化时自动建立的，如果你看到了这个文件，说明一切工作正常。\r\n\r\n当你使用记事本修改这个文件并保存以后，它会同步到虚拟文件系统中。\r\n\r\n该虚拟文件系统是索引文件系统，inode 默认占总空间的 10%，理论可支持单一文件最大 2GB。"));
System.Windows.Forms.MessageBox.Show("磁盘格式化成功！", "VFS", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Information);
}
LoadDirectory("/");
UpdateInfo();
}
public File(VFSCore vfs, String path, FileMode fileMode)
{
this.vfs = vfs;
var directory = VFS.GetPathDirectory(path);
var name = VFS.GetPathName(path);
VFS.AssertNameValid(name);
INodeDirectory dir = INodeDirectory.Resolve(vfs, directory);
if (dir == null)
{
throw new Exception("无法访问目录");
}
switch (fileMode)
{
case FileMode.CreateNew:
if (dir.Contains(name))
{
throw new Exception("文件已存在");
}
CreateFile(dir, name);
break;
case FileMode.Create:
if (dir.Contains(name))
{
OpenFile(dir, name);
inode.Resize(0);
}
else
{
CreateFile(dir, name);
}
break;
case FileMode.Open:
if (!dir.Contains(name))
{
throw new Exception("文件未找到");
}
OpenFile(dir, name);
break;
case FileMode.OpenOrCreate:
if (dir.Contains(name))
{
OpenFile(dir, name);
}
else
{
CreateFile(dir, name);
}
break;
case FileMode.Truncate:
if (!dir.Contains(name))
{
throw new Exception("文件未找到");
}
OpenFile(dir, name);
inode.Resize(0);
break;
case FileMode.Append:
if (!dir.Contains(name))
{
CreateFile(dir, name);
}
else
{
OpenFile(dir, name);
position = inode.data.sizeByte;
}
break;
default:
throw new ArgumentException();
}
}
