Пример #1
0
        private void remove(ref CompoundCmd cmd, string name, int parent)
        {
            inode _node = MemoryInterface.getInstance().getInodeByIndex(parent);

            cmd.newOpe(new EditCmd(parent));
            int id = MemoryInterface.getInstance().getDataBlockByIndex(_node.getBlock(0)).removeInode(name);      //找到删除文件的inode

            _node = MemoryInterface.getInstance().getInodeByIndex(id);
            cmd.newOpe(new DeleteCmd(id));

            if (_node.getType().Equals("文件夹"))
            {
                for (int i = 0; ; i++)       //释放inodetable中信息
                {
                    string _name = MemoryInterface.getInstance().getDataBlockByIndex(_node.getBlock(0)).findInode(2);

                    if (_name != null)
                    {
                        remove(ref cmd, _name, id);
                    }
                    else
                    {
                        break;
                    }
                }
            }

            List <int> b = _node.getBlockPtr().ToList <int>();  //获得该节点占用的全部块

            MemoryInterface.getInstance().releaseBlock(b);      //释放块位图
            MemoryInterface.getInstance().releaseInode(id);     //释放节点位图
        }
Пример #2
0
        public override void removeEntry(int selectedItem, string name)
        {
            entries.RemoveAt(selectedItem);
            CompoundCmd cmd = new CompoundCmd();

            remove(ref cmd, name, node);
            UndoManager.getInstance().newOpe(cmd);
            MemoryInterface.getInstance().write();
        }
Пример #3
0
        public override string createEntry(string _name, string type)
        {
            int         parent = -1;
            UndoableCmd cmd1   = new EditCmd(node);

            if (_name != null)                                                           //点击文件夹创建
            {
                parent = MemoryInterface.getInstance().getInodeIndexByName(node, _name); //选中文件夹为父目录
            }
            else                                                                         //直接新建
            {
                parent = node;                                                           //当前目录为父目录
            }

            List <int> nodeLoc  = MemoryInterface.getInstance().getRequireInodes(1);      //找到未使用的inode节点
            List <int> blockLoc = MemoryInterface.getInstance().getRequireBlocks(1);      //找到空闲磁盘块


            if (nodeLoc == null || blockLoc == null)        //inodeMap或blockMap用尽
            {
                return(null);
            }
            string name = null;

            if (type.Equals("文件夹"))
            {
                name = initDir(blockLoc, parent, nodeLoc[0]);
                entries.Add(new Directory(nodeLoc[0], name));
            }
            else
            {
                name = "新建文件";
                name = MemoryInterface.getInstance().addNewInodeTableItem(MemoryInterface.getInstance().getInodeByIndex(parent).getBlock(0), name, nodeLoc[0]);
                inode temp = MemoryInterface.getInstance().getInodeByIndex(nodeLoc[0]);
                temp.init(nodeLoc[0], blockLoc, "文件", DateTime.Now);
                entries.Add(new File(temp, name));
            }
            UndoableCmd cmd2 = new AddCmd(nodeLoc[0]);
            CompoundCmd cmd3 = new CompoundCmd();

            cmd3.newOpe(cmd1);
            cmd3.newOpe(cmd2);
            UndoManager.getInstance().newOpe(cmd3);
            MemoryInterface.getInstance().write();

            return(name);
        }