Project Stage 1_student Java files.zip_project

import java.io.*; import java.util.*; public class TFSShell extends Thread { public TFSShell() { } public void run() { readCmdLine(); } /* * User interface routine */ void readCmdLine() { String line, cmd, arg1, arg2, arg3, arg4; StringTokenizer stokenizer; Scanner scanner = new Scanner(System.in); System.out.println("Hal: Good morning, Dave!\n"); while(true) { System.out.print("ush> "); line = scanner.nextLine(); line = line.trim(); stokenizer = new StringTokenizer(line); if (stokenizer.hasMoreTokens()) { cmd = stokenizer.nextToken(); if (cmd.equals("mkfs")) mkfs(); else if (cmd.equals("mount")) mount(); else if (cmd.equals("sync")) sync(); else if (cmd.equals("prrfs")) prrfs(); else if (cmd.equals("mkdir")) { if (stokenizer.hasMoreTokens()) { arg1 = stokenizer.nextToken(); mkdir(arg1); } else System.out.println("Usage: mkdir directory"); } else if (cmd.equals("rmdir")) { if (stokenizer.hasMoreTokens()) { arg1 = stokenizer.nextToken(); rmdir(arg1); } else System.out.println("Usage: rmdir directory"); } else if (cmd.equals("ls")) { if (stokenizer.hasMoreTokens()) { arg1 = stokenizer.nextToken(); ls(arg1); } else System.out.println("Usage: ls directory"); } else if (cmd.equals("create")) { if (stokenizer.hasMoreTokens()) { arg1 = stokenizer.nextToken(); create(arg1); } else System.out.println("Usage: create file"); } else if (cmd.equals("rm")) { if (stokenizer.hasMoreTokens()) { arg1 = stokenizer.nextToken(); rm(arg1); } else System.out.println("Usage: rm file"); } else if (cmd.equals("print")) { if (stokenizer.hasMoreTokens()) arg1 = stokenizer.nextToken(); else { System.out.println("Usage: print file position number"); continue; } if (stokenizer.hasMoreTokens()) arg2 = stokenizer.nextToken(); else { System.out.println("Usage: print file position number"); continue; } if (stokenizer.hasMoreTokens()) arg3 = stokenizer.nextToken(); else { System.out.println("Usage: print file position number"); continue; } try { print(arg1, Integer.parseInt(arg2), Integer.parseInt(arg3)); } catch (NumberFormatException nfe) { System.out.println("Usage: print file position number"); } } else if (cmd.equals("append")) { if (stokenizer.hasMoreTokens()) arg1 = stokenizer.nextToken(); else { System.out.println("Usage: append file number"); continue; } if (stokenizer.hasMoreTokens()) arg2 = stokenizer.nextToken(); else { System.out.println("Usage: append file number"); continue; } try { append(arg1, Integer.parseInt(arg2)); } catch (NumberFormatException nfe) { System.out.println("Usage: append file number"); } } else if (cmd.equals("cp")) { if (stokenizer.hasMoreTokens()) arg1 = stokenizer.nextToken(); else { System.out.println("Usage: cp file directory"); continue; } if (stokenizer.hasMoreTokens()) arg2 = stokenizer.nextToken(); else { System.out.println("Usage: cp file directory"); continue; } cp(arg1, arg2); } else if (cmd.equals("rename")) { if (stokenizer.hasMoreTokens()) arg1 = stokenizer.nextToken(); else { System.out.println("Usage: rename src_file dest_file"); continue; } if (stokenizer.hasMoreTokens()) arg2 = stokenizer.nextToken(); else { System.out.println("Usage: rename src_file dest_file"); continue; } rename(arg1, arg2); } else if (cmd.equals("exit")) { exit(); System.out.println("\nHal: Good bye, Dave!\n"); break; } else System.out.println("-ush: " + cmd + ": command not found"); } } } /* * You need to implement these commands */ void mkfs() { return; } void mount() { return; } void sync() { return; } void prrfs() { return; } void mkdir(String directory) { return; } void rmdir(String directory) { return; } void ls(String directory) { return; } void create(String file) { return; } void rm(String file) { return; } void print(String file, int position, int number) { return; } void append(String file, int number) { return; } void cp(String file, String directory) { return; } void rename(String source_file, String destination_file) { return; } void exit() { return; } } /* * main method */ class TFSMain { public static void main(String argv[]) throws InterruptedException { TFSFileSystem tfs = new TFSFileSystem(); TFSShell shell = new TFSShell(); shell.start(); // try { shell.join(); // } catch (InterruptedException ie) {} } }