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public static Load ( |
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| vfs | ||
| index | ||
| return | ||
/// <summary>
/// 删除一个目录项
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public Boolean Delete(String name)
{
if (!Contains(name))
{
return(false);
}
if (name == "." || name == "..")
{
return(false);
}
var inodeIndex = entries[name];
INode inode = INode.Load(vfs, inodeIndex);
if (inode.IsDirectory())
{
// 删除非空目录项:递归删除
INodeDirectory id = INodeDirectory.Load(vfs, inodeIndex);
if (id.Size() > 2)
{
var l = id.List();
foreach (var pair in l)
{
id.Delete(pair.Key);
}
}
}
inode.data.linkCount--;
if (inode.data.linkCount == 0)
{
inode.Resize(0);
vfs.DeAllocateINode(inode.index);
}
else
{
inode.Save();
}
entries.Remove(name);
Save();
return(true);
}
/// <summary>
/// 根据路径解析目录，路径必须以 / 结尾
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public static INodeDirectory Resolve(VFSCore vfs, String path)
{
INodeDirectory root = Load(vfs, 0);
var pathCom = path.Split('/');
var node = root;
for (var i = 1; i < pathCom.Length - 1; ++i)
{
if (node.Contains(pathCom[i]) && INode.Load(vfs, node.Find(pathCom[i])).IsDirectory())
{
node = Load(vfs, node.Find(pathCom[i]));
}
else
{
return(null);
}
}
return(node);
}
/// <summary>
/// 列出一个目录下所有内容
/// </summary>
/// <returns></returns>
public List <DirectoryInfo> List()
{
var ret = new List <DirectoryInfo>();
var entries = dir.List();
foreach (var entry in entries)
{
var info = new DirectoryInfo();
INode inode = INode.Load(vfs, entry.Value);
info.isDirectory = inode.IsDirectory();
info.accessTime = inode.data.accessTime;
info.creationTime = inode.data.creationTime;
info.flags = inode.data.flags;
info.modifyTime = inode.data.modifyTime;
info.name = entry.Key;
info.path = this.path + entry.Key;
info.owner = inode.data.owner;
info.size = inode.data.sizeByte;
info.inode = inode.data;
info.inodeIndex = inode.index;
ret.Add(info);
}
return(ret);
}
/// <summary>
/// 根据 inode index 建立 INodeDirectory
/// </summary>
/// <param name="vfs"></param>
/// <param name="inodeIndex"></param>
/// <returns></returns>
public static INodeDirectory Load(VFSCore vfs, UInt32 inodeIndex)
{
INode inode = INode.Load(vfs, inodeIndex);
return(Load(vfs, inode));
}
/// <summary>
/// 通过打开现有文件来初始化该类
/// </summary>
/// <param name="dir"></param>
/// <param name="name"></param>
private void OpenFile(INodeDirectory dir, String name)
{
inode = INode.Load(vfs, dir.Find(name));
}