public int getPre(FCB item) //返回pre的编号（用于txt文件读写）
{
int pre;
if (item.pre != null)
{
pre = item.pre.filePointer;
}
else
{
return(-1);
}
return(pre);
}
public int getNext(FCB item) //返回next的编号（用于txt文件读写）
{
int next;
if (item.next != null)
{
next = item.next.filePointer;
}
else
{
return(-1);
}
return(next);
}
//用PCB创建文件
public File(FCB item, string fatherPath = "")
{
name = item.fileName;
size = "0";
type = item.fileType.ToString();
path = fatherPath + '\\' + name;
Fatherpath = fatherPath;
filePointer = item.filePointer;
indexPointer = new IndexTable();
createTime = DateTime.Now;
item.size = size;
item.path = path;
item.createTime = createTime;
}
public void deserialize()
{
FileStream fileStream1, fileStream2, fileStream3;
BinaryFormatter b = new BinaryFormatter();
fileStream1 = new FileStream(System.IO.Path.Combine(dir, "catalogTree.dat"), FileMode.Open, FileAccess.Read, FileShare.Read);
root_fcb = b.Deserialize(fileStream1) as FCB;
fileStream1.Close();
fileStream2 = new FileStream(System.IO.Path.Combine(dir, "catalogTable.dat"), FileMode.Open, FileAccess.Read, FileShare.Read);
catalog = b.Deserialize(fileStream2) as Catalog;
fileStream2.Close();
fileStream3 = new FileStream(System.IO.Path.Combine(dir, "bitMap.dat"), FileMode.Open, FileAccess.Read, FileShare.Read);
bitMap = b.Deserialize(fileStream3) as BitMap;
fileStream3.Close();
}
private void 返回ToolStripMenuItem1_Click(object sender, EventArgs e)
{
if (current_catalog == root_fcb)
{
return;
}
current_catalog = current_catalog.father;
if (current_catalog == root_fcb)
{
textBox1.Text = "root\\";
}
else
{
textBox1.Text = catalog.getFile(current_catalog).path;
}
UpdateListView(current_catalog);
}
private void nodeDFS(TreeNode node, FCB dir)//维护目录
{
if (dir.son != null)
{
FCB son = dir.son;
do
{
if (son.fileType == FCB.FileType.folder)
{
TreeNode new_node = new TreeNode(son.fileName);
nodeDFS(new_node, son);
node.Nodes.Add(new_node);
}
son = son.next;
} while(son != null);
}
}
public void addSonItem(FCB newItem)
{
if (this.son == null)
{
this.son = newItem;
newItem.father = this;
}
else
{
FCB temp = this.son;
while (temp.next != null)
{
temp = temp.next;
}
temp.next = newItem;
newItem.pre = temp;
}
}
private void button1_Click(object sender, EventArgs e)
{
//当前在根目录下
if (current_catalog_fcb == root_fcb)
{
return;
}
current_catalog_fcb = current_catalog_fcb.father;
if (current_catalog_fcb == root_fcb)
{
textBox1.Text = "root\\";
}
else
{
textBox1.Text = catalog.getFile(current_catalog_fcb).path;
}
UpdateListView();
}
private void 打开ToolStripMenuItem1_Click(object sender, EventArgs e)
{
ListViewItem current_item = new ListViewItem();
if (listView1.SelectedItems.Count != 0)
{
current_item = listView1.SelectedItems[0];
}
else
{
MessageBox.Show("Please select a item");
return;
}
File current_file = catalog.getFile(getPointer(current_item));
FCB current_fcb = catalog.getFCB(current_file);
openClick(current_fcb, current_file);
}
private void listView_DoubleClick(object sender, EventArgs e)
{
ListViewItem current_item = new ListViewItem();
if (listView1.SelectedItems.Count != 0)
{
current_item = listView1.SelectedItems[0];
}
else
{
MessageBox.Show("Please select a item");
return;
}
File current_file = directory.getFile(getPointer(current_item));
FCB current_fcb = directory.getFCB(current_file);
openClick(current_fcb, current_file);
}
private void 文件夹ToolStripMenuItem_Click(object sender, EventArgs e)
{
string file_name = nameCheck("New folder");
string fatherPath;
//Add new FCB
FCB new_fcb = new FCB(file_name, FCB.FileType.folder);
current_directory.addSonItem(new_fcb);
//Add new File
//Build new file path
File father = directory.getFile(current_directory);
fatherPath = (father == null) ? "root" : father.path;
File new_file = new File(new_fcb, fatherPath);
directory.map(new_fcb, new_file);
UpdateView();
}
private void 文件ToolStripMenuItem2_Click(object sender, EventArgs e)
{
string file_name = nameCheck("New text", ".txt");
string fatherPath;
//Add new FCB
FCB new_fcb = new FCB(file_name, FCB.FileType.txt);
current_catalog.addSonItem(new_fcb);
//Add new File
//Build new file path
File father = catalog.getFile(current_catalog);
fatherPath = (father == null) ? "root" : father.path;
File new_file = new File(new_fcb, fatherPath);
catalog.map(new_fcb, new_file);
UpdateListView(current_catalog);
}
private void openClick(FCB fcb, File file)
{
switch (fcb.fileType)
{
case FCB.FileType.folder:
current_catalog = fcb;
folderStack.Push(fcb);
textBox1.Text = catalog.getFile(current_catalog).path;
UpdateListView(fcb);
break;
case FCB.FileType.txt:
FileEditor fileEditor = new FileEditor(file);
fileEditor.Show();
fileEditor.CallBack = UpdateView;
break;
default:
break;
}
}
//增加子类
public void addSonItem(FCB newItem)
{
//如果没有儿子，则直接添加
if (this.son == null)
{
this.son = newItem;
newItem.father = this;
}
else
{
//如果有儿子，添加到最后一个儿子的兄弟后面
FCB temp = this.son;
while (temp.next != null)
{
temp = temp.next;
}
temp.next = newItem;
newItem.pre = temp;
newItem.father = this;
}
}
private void 文件ToolStripMenuItem2_Click(object sender, EventArgs e)
{
string file_name = nameCheck("New text", ".txt");
string fatherPath;
//新建FCB
FCB new_fcb = new FCB(file_name, FCB.FileType.txt);
current_directory.addSonItem(new_fcb);
//建立文件路径
File father = directory.getFile(current_directory);
fatherPath = (father == null) ? "root" : father.path;
//新建文件
File new_file = new File(new_fcb, fatherPath);
directory.map(new_fcb, new_file);
UpdateListView(current_directory);
}
private void openClick(FCB fcb, File file)
{
switch (fcb.fileType)
{
case FCB.FileType.folder: //双击文件夹进入当前文件夹
current_directory = fcb;
folderStack.Push(fcb);
textBox1.Text = directory.getFile(current_directory).path;
UpdateListView(fcb);
break;
case FCB.FileType.txt: //双击文件弹出FileEditor
FileEditor fileEditor = new FileEditor(file);
fileEditor.Show();
fileEditor.CallBack = UpdateView;
break;
default:
break;
}
}
private void 重命名ToolStripMenuItem1_Click(object sender, EventArgs e)
{
ListViewItem current_item = new ListViewItem();
if (listView1.SelectedItems.Count != 0)
{
current_item = listView1.SelectedItems[0];
}
else
{
MessageBox.Show("Please select a item");
return;
}
File current_file = directory.getFile(getPointer(current_item));
FCB current_fcb = directory.getFCB(current_file);
InputBox inputBox = new InputBox(current_file, current_fcb);
inputBox.Show();
inputBox.CallBack = UpdateView;
}
private void 返回ToolStripMenuItem1_Click(object sender, EventArgs e)
{
if (current_directory == root_fcb)
{
MessageBox.Show("⚠ Attention：Already at root!");
return;
}
while (current_directory.father == null)
{
current_directory = current_directory.pre;
}
current_directory = current_directory.father;
if (current_directory == root_fcb)
{
textBox1.Text = "root\\";
}
else
{
textBox1.Text = directory.getFile(current_directory).path;
}
UpdateListView(current_directory);
}
//与菜单栏的打开链接
private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)
{
ListViewItem selected_item = new ListViewItem();
//如果选中文件个数不只一个，则选中的文件为第一个，否则提示用户选中一个文件
if (listView1.SelectedItems.Count != 0)
{
selected_item = listView1.SelectedItems[0];
}
else
{
MessageBox.Show("请选择一个文件");
return;
}
//通过内存指针找到该文件
File selected_file = catalog.getFile(getPointer(selected_item));
//获得该文件的PCB
FCB selected_fcb = catalog.getFCB(selected_file);
open(selected_fcb, selected_file);
}
private string nameCheck(string s, string ext = "")
{
FCB current_dir = current_directory.son;
int counter = 0;
while (current_dir != null)
{
string[] sArray = current_dir.fileName.Split('(');
if (sArray[0] != current_dir.fileName && sArray[0] == s)
{
counter++;
}
else if (current_dir.fileName == s + ext)
{
counter++;
}
current_dir = current_dir.next;
}
if (counter > 0)
{
s += "(" + counter.ToString() + ")";
}
return(s + ext);
}
public RenameForm(File file, FCB fcb)
{
InitializeComponent();
renaming_file = file;
renaming_fcb = fcb;
}
//完成FCB和File的映射
public void map(FCB item, File file)
{
file_table[item.filePointer] = file;
fcb_table[item.filePointer] = item;
}
//将txt里的数据加载回文件系统
void readStore()
{
if (System.IO.File.Exists("txtRecord\\Block.txt") && System.IO.File.Exists("txtRecord\\BitMap.txt") && System.IO.File.Exists("txtRecord\\File.txt") && System.IO.File.Exists("txtRecord\\FCB.txt"))
{
FileStream BlockStore = new FileStream("txtRecord\\Block.txt", FileMode.Open); //读取Block数据
StreamReader br = new StreamReader(BlockStore, Encoding.Default);
//for (int i = 100; i < BitMap.Capcity; i++)
for (int i = 0; i < My_BitMap.Capcity; i++)
{
string readContent = br.ReadLine();
if (readContent == null || Convert.ToString(readContent) == "N")
{
//这个block没有内容
}
else
{
My_BitMap.blocks[i] = new Block();
My_BitMap.blocks[i].info = readContent;
}
}
br.Close();
BlockStore.Close();
FileStream BitMapStore = new FileStream("txtRecord\\BitMap.txt", FileMode.Open); //读取BitMap数据
StreamReader mr = new StreamReader(BitMapStore);
for (int i = 0; i < My_BitMap.Capcity; i++)
{
My_BitMap.my_inside_bitMap[i] = Convert.ToBoolean(mr.ReadLine());
}
mr.Close();
BitMapStore.Close();
FileStream fcbStorage = new FileStream("txtRecord\\FCB.txt", FileMode.Open); //读取FCB数据
StreamReader fcbr = new StreamReader(fcbStorage);
string content = fcbr.ReadLine();
Console.WriteLine("读取FCB文件，第一行内容：" + content);
int dcount = Convert.ToInt32(content); //FCB的数量
for (int i = 1; i <= dcount; i++)
{
FCB fcb = new FCB();
fcb.RStore(fcbr);
Directory.fcb_table[i] = fcb;
//directory.Add(fcb);
}
fcbr.Close();
fcbStorage.Close();
FileStream FileStore = new FileStream("txtRecord\\File.txt", FileMode.Open); //读取File
StreamReader fr = new StreamReader(FileStore);
for (int i = 1; i <= dcount; i++)
{
Directory.file_table[i] = new File();
Directory.file_table[i].RStore(fr);
}
fr.Close();
FileStore.Close();
}
}
//移除该文件
public void removeFile(FCB item)
{
//将磁盘块中该文件的指针删除
file_table.Remove(item.filePointer);
}
//移除文件
public void removeFile(FCB item)
{
file_table.Remove(item.filePointer);
}
public InputBox(File file, FCB fcb)
{
InitializeComponent();
renaming_file = file;
renaming_fcb = fcb;
}
