private void listItems(int _index) //列出文件夹下的文件
{
listView.Items.Clear();
inode _node = node[_index];
for (int i = 0; ; i++)
{
string _name = datablock[_node.getBlock(0)].findInode(i);
if (_name == null)
{
break;
}
if (_name.Equals("..") || _name.Equals("."))
{
continue;
}
int size = -1;
string type = node[datablock[_node.getBlock(0)].findInode(_name)].getType();
DateTime time = node[datablock[_node.getBlock(0)].findInode(_name)].getTime();
if (type.Equals("文件"))
{
size = calculate(_node, _name);
}
setViewItem(_name, type, size, time);
}
}
public void reNameFile(string newName, int _index) //重命名文件
{
inode _node = node[workDir];
datablock[_node.getBlock(0)].reNameInode(newName, _index); //在父目录的inodetable中进行修改
IOFormatter.getInstance().Serialize(IOStream.getInstance(), datablock);
}
public Boolean reDirectCatalog(string name) //切换文件目录或打开文件
{
inode _node = node[workDir];
int temp = workDir;
workDir = datablock[_node.getBlock(0)].reDirectInode(name); //找到所选项的inode
if (node[workDir].getType().Equals("文件"))
{
selectedFile = workDir;
workDir = temp;
return(true); //是文件直接打开
}
listItems(workDir); //是文件夹进入目录
return(false);
}
public Boolean createEntry(string type, string _name) //创建新的文件
{
int parent = -1;
inode _node = null;
if (_name != null) //点击文件夹创建
{
parent = datablock[node[workDir].getBlock(0)].findInode(_name); //选中文件夹为父目录
}
else //直接新建
{
parent = workDir; //当前目录为父目录
}
_node = node[parent];
List <int> nodeLoc = nodeMap.findUnuse(1); //找到未使用的inode节点
List <int> blockLoc = blockMap.findUnuse(1); //找到空闲磁盘块
if (nodeLoc == null || blockLoc == null) //inodeMap或blockMap用尽
{
return(false);
}
if (datablock[blockLoc[0]] == null) //磁盘块未初始化
{
datablock[blockLoc[0]] = new dataBlock();
if (type == "文件夹")
{
initDir(blockLoc[0], parent, nodeLoc[0]);
}
}
if (node[nodeLoc[0]] == null) //inode为初始化
{
node[nodeLoc[0]] = new inode();
}
string name = "新建" + type;
name = datablock[_node.getBlock(0)].createInode(name, nodeLoc[0]);
if (_name == null)
{
setViewItem(name, type, 0, DateTime.Now);
}
node[nodeLoc[0]].init(nodeLoc[0], blockLoc, type, DateTime.Now);
IOFormatter.getInstance().Serialize(IOStream.getInstance(), datablock);
return(true);
}
private int calculate(inode _node, string _name) //计算文件大小
{
int[] ptr = node[datablock[_node.getBlock(0)].findInode(_name)].getBlockPtr();
string content = "";
for (int i = 0; i < 13; i++) //遍历该文件的所有块，计算大小
{
if (datablock[ptr[i]] != null && datablock[ptr[i]].data != null && !datablock[ptr[i]].data.Equals(""))
{
content += datablock[ptr[i]].data;
continue;
}
break;
}
byte[] sarr = Encoding.Default.GetBytes(content);
return(sarr.Length);
}