cmdlinecopy.java

基于java的文件管理系统 能实现包括文件的创建、删除、查找等功能

package fileSys.UI;

import java.awt.Dimension;
import java.awt.TextArea;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.List;

import javax.swing.JFrame;
import javax.swing.JPanel;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import fileSys.service.FileService;
import fileSys.util.AFile;
import fileSys.util.Command;
import fileSys.util.ParseCommand;

public class CMDLineCopy {

	private static String commandStr;
	private static String currentPath;
	private static String currentDir;
	private static String newStr = "";
	private static String user;
	private static boolean right = false;

	private static Command lastCMD = null;

	static ApplicationContext context = new ClassPathXmlApplicationContext(
			"config.xml");
	static FileService fileService = (FileService) context
			.getBean("fileService");

	final ParseCommand parseCommand = (ParseCommand) context
			.getBean("parseCommand");

	public CMDLineCopy(final String username, final String currentdir) {

		currentDir = currentdir;
		user = username;
		fileService.init();
		if (username.equals("root"))
			currentPath = "/main";
		else
			currentPath = "/main/" + username;
		commandStr = "[" + user + " " + currentDir + "]" + ":";
		JFrame frame = new JFrame("文件管理系统终端");

		frame.setLocation(40, 60);

		JPanel panel = (JPanel) frame.getContentPane();
		panel.setPreferredSize(new Dimension(600, 400));

		final TextArea textarea = new TextArea(commandStr);

		textarea.addKeyListener(new KeyListener() {

			public void keyTyped(KeyEvent event) {

				Character tempchar = event.getKeyChar();
				String tip = "";
				
				String temp = ""+tempchar;
				if (temp.matches("^.$")||tempchar=='\n') {
					if (tempchar == 8) {
						try {
							newStr = newStr.substring(0, newStr.length() - 1);
						} catch (Exception e) {

						}

					} else {

						if (tempchar != '\n') {

							newStr = newStr + tempchar;

						} else {

							if (newStr == "")
								textarea.append(commandStr);
							else {

								commandStr = commandStr + newStr;
								newStr = "";
								Command command = parseCommand
										.parseCom(commandStr);
								tip = CMDLineCopy.invokeService(command);
								commandStr = "[" + user + " " + currentDir
										+ "]" + ":";

								if (tip != null) {
									commandStr = commandStr + tip;
									textarea.append(commandStr);
									commandStr = "[" + user + " " + currentDir

									+ "]" + ":";
									textarea.append("\n" + commandStr);

								} else {

									textarea.append(commandStr);
								}
							}
						}
					}
				}
			}

			public void keyPressed(KeyEvent event) {

			}

			public void keyReleased(KeyEvent event) {

			}
		});

		panel.add(textarea);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setResizable(false);
		frame.pack();
		frame.setVisible(true);
	}

	public static String invokeService(Command command) {

		String com = command.getCmd();
		String tip = null;
		String result;

		String dest;
		
		if (com.equals("cd")) { //命令为"cd" 时的处理；
			
			dest = command.getArg();
			result = fileService.changeDir(currentPath, dest);
			
			if (result == null) {
				tip = "The directory \""+ dest + "\"  can not be found!";
			} else {

				if (result == FileService.NDIR) {

					tip = dest + "\" is not a directory";
				} else {

					currentPath = result;
					currentDir = result.substring(result.lastIndexOf('/') + 1);
				}
			}
			dest = null;
		} else if (com.equals("md")) { //命令为"md" 时的处理；

			dest = command.getArg();
			String flag = null;
			if (dest == null) {

				tip = "The operate arguments lost!";
			} else {
				if (fileService.accessControl(user, currentPath, dest) || right) {

					right = false;
					flag = fileService.createDir(currentPath, dest);					
					tip = setTip(dest,flag);
				} else {

					lastCMD = command;
					tip = "You have no right to make directory in this directory! \n Do you have the directory's save code? [y/n]";
				}
			}
			dest = null;
		} else if (com.equals("dir")) { //命令为"dir" 时的处理；

			tip = currentPath;
		} else if (com.equals("rm")) { //命令为"rm" 时的处理；

			dest = command.getArg();
			String flag = null;

			if (dest == null) {

				tip = "The operate arguments lost!";
			} else {

				if (fileService.accessControl(user, currentPath, dest)
						|| right) {

					right = false;
					flag = fileService.deleteDir(currentPath, dest);
					tip = setTip(dest,flag);
				}else {
					lastCMD = command;
					tip = "You have no right to remove \""
							+ dest
							+ "\" ! \n Do you have the directory's save code? [y/n]";
				}
			}
			
			if(FileService.NNULL.equals(tip)){
				
				command.setCmd("rmAll");
				lastCMD = command;
				tip = "The directory is not empty! \n Are you sure you want to delete it? [y/n]";
			}
			
			dest = null;
		} else if (com.equals("open")) { // 命令为"open" 时的处理；

			String option = command.getOption();
			dest = command.getArg();

			if (dest == null)
				tip = "The operate arguments lost!";
			else {

				AFile afile = fileService.openFile(currentPath, dest);
				
				tip = setTip(dest,afile.getFlag());
				
				if(tip == null){
					
					if (option == null || option.equals("-r"))
						new Editer(afile, "open", "-r",fileService);
					else if (option.equals("-w") ) {

						if (fileService.accessControl(user, currentPath,
								dest))
							new Editer(afile, "open", "-w",fileService);
						else
							tip = "You have no right to write this file  \""+dest;
					}
				}
			}
			dest = null;
		} else if (com.equals("openall")) { //命令为"openall" 时的处理；
			
			dest = command.getArg();
			if(dest == null)
				dest = currentPath;
			
			List<AFile> fileList = fileService.openFiles(currentPath, dest);
			if(fileList.size() == 0){
				tip = "No file in this directory  \""+dest+"\"";
			}else{
				
				for(AFile file : fileList){
					
					new Editer(file,"open","-r",fileService);
				}
			}
			dest = null;
		} else if (com.equals("create")) { //命令为"create" 时的处理；

			dest = command.getArg();
			String flag = null;

			if (dest == null) {

				tip = "The operate arguments lost!";
			} else {

				if (fileService.accessControl(user, currentPath, dest) || right) {

					right = false;
					flag = fileService.createFile(currentPath, dest);
					tip = setTip(dest,flag);
					
				} else {

					lastCMD = command;
					tip = "You have no right to create new file in this directory! \n Do you have the directory's save code? [y/n]";
				}
			}
			dest = null;
		} else if (com.equals("delete")) { //命令为"delete" 时的处理；

			dest = command.getArg();
			String flag = null;

			if (dest == null) {

				tip = "The operate arguments lost!";
			} else {

				if (fileService.accessControl(user, currentPath, dest) || right){
					
					flag = fileService.deleteFile(currentPath, dest);
					tip = setTip(dest,flag);
				}else {

					lastCMD = command;
					tip = "You have no right to delete " + dest
							+ "\n Do you have this file's save code? [y/n]";
				}
			}
			dest = null;
		} else if (com.equals("write")) { //命令为"write" 时的处理；
			
			dest = command.getArg();

			if (dest == null)
				tip = "The operate arguments lost!";
			else {

				AFile afile = fileService.openFile(currentPath, dest);
				if (afile.getFlag() == FileService.ERROR) {
					tip = "There are something wrong at reading the file  \""+dest+"\"";
				} else if (afile.getFlag() == FileService.NFILE) {
					tip = "It is not a file";
				} else if (afile.getFlag() == FileService.NEXIST) {
					tip = "The file  \""+ dest +"\"   is not exist";
				} else {
					
					if (fileService.accessControl(user, currentPath, dest)
							|| right) {
						right = false;
						new Editer(afile, "write", "", fileService);
					} else {

						lastCMD = command;
						tip = "You have no right to create new file in this directory! \n Do you have the directory's save code? [y/n]";
					}
						
				}
			}
			dest = null;
		} else if (com.equals("read")) { //命令为"read" 时的处理；
			
			String option = command.getOption();
			dest = command.getArg();

			if (dest == null)
				tip = "The operate arguments lost!";
			else {

				AFile afile = fileService.openFile(currentPath, dest);
				
				tip = setTip(dest,afile.getFlag());
				
				if(tip == null){
					
					if (option == null || option.equals("-r"))
						new Editer(afile, "read", "-r",fileService);
					else if (option.equals("-w") ) {

						if (fileService.accessControl(user, currentPath,
								dest))
							new Editer(afile, "read", "-w",fileService);
						else
							tip = "You have no right to write this file  \""+dest+"\"";
					}
				}
			}
			dest = null;
		} else if (com.equals("change")) { // 命令为"change" 时的处理；

			String flag = null;
			dest = command.getOption();
			String saveCode = command.getArg();

			if (dest == null)
				tip = "The operate arguments lost!";
			else {

				if (fileService.accessControl(user, currentPath, dest)) {

					flag = fileService.changeSaveCode(currentPath, dest,
							saveCode);
					tip = setTip(dest, flag);
				} else
					tip = "You have no right to change this save code!";
			}
			dest = null;
		} else if (com.equals("exit")) { //命令为"exit" 时的处理；

			System.exit(1);
		} else if (lastCMD != null && com.equals("n")) { //辅助命令"n" 时的处理；

			lastCMD = null;
		} else if (lastCMD != null && com.equals("y")) { // 辅助命令"y" 时的处理；

			com = lastCMD.getCmd();
			if (com.equals("rmAll")) {

				String destDir = lastCMD.getArg();
				fileService.deleteNotNullDir(currentPath, destDir);
				lastCMD = null;
			} else {

				tip = "Please input your saveCode :";
			}

		} else if (lastCMD != null && !com.equals("y") && !com.equals("n")) {

			String flag = fileService.checkSaveCode(lastCMD.getCmd(),
					currentPath, lastCMD.getArg(), com);
			if (flag == FileService.SUCCESS) {

				right = true;
				tip = invokeService(lastCMD);
				if (lastCMD.getCmd() != "rmAll") {

					lastCMD = null;
				}
			} else if (flag == FileService.NEXIST)
				tip = "The file is not exist";
			else
				tip = "The save code is invailed!";

		} else {

			tip = com + " command not found";
		}

		return tip;
	}
	
	static String setTip(String dest,String flag){
		
		String tip = null;

		if(FileService.ERROR.equals(flag))
			tip = "There is something wrong in this operation !";
		else if(FileService.EXIST.equals(flag)){
			
			tip = "\" " + dest + " \" has been exist!";
		}
		else if(FileService.NDIR.equals(flag))
			tip = "\" " + dest + " \" is not a directory !";
		else if(FileService.NEXIST.equals(flag))
			tip = "\" " + dest + " \" is not exist !";
		else if(FileService.NFILE.equals(flag))
			tip = "\" " + dest + " \" is not a file !";
		else if(FileService.NNULL.equals(flag))
			tip = flag;
		else if(FileService.USED.equals(flag))
			tip = "\" "+ dest +" \"  can not be deleted!";
		else if(FileService.SUCCESS.equals(flag))
			tip = null;
		else
			tip = null;

		return tip;
	}
}