Kod: Markera allt
LDP #DP_PF2
LACC PCDATDIR
OR #080h ;IOPC7 hi
SACL PCDATDIR
LACC PCDATDIR
AND #(0FFFFh-04004h) ;IOPC6 input
SACL PCDATDIR ;clear IOPC2
Kod: Markera allt
import ajava.edu.*;
import java.util.*;
import java.io.File;
import static java.lang.System.*;
public class commandpromt
{
public static File currentdir = new File ("/."); // initiate root directory, and begin with root directory as current directory, globally known
public static void main (String [] args) throws Exception
{
Scanner in = new Scanner (System.in);
in.useLocale (Locale.US);
while (true)
{
out.print (currentdir.getCanonicalFile () + "> "); // show prompt with current directory
String command = in.nextLine (); // enter commands with or without arguments
Scanner scanner = new Scanner (command); // split command and let the arguments be handled by respective if-case
command = scanner.next ();
String arg1, arg2; // initiate arguments varibles
out.println ();
/********************* check below for commands and call their respective method with arguments if avablie *********************/
if (command.equals("ls"))
{
ls ();
}
else if (command.equals ("pwd"))
{
pwd ();
}
else if (command.equals ("mkdir"))
{
try
{
arg1 = scanner.next();
mkdir (arg1);
}
catch (NoSuchElementException e)
{
catchMess ();
}
}
else if (command.equals ("rm"))
{
try
{
arg1 = scanner.next();
rm (arg1);
}
catch (NoSuchElementException e)
{
catchMess ();
}
}
else if (command.equals ("cd"))
{
try
{
arg1 = scanner.next();
cd (arg1);
}
catch (NoSuchElementException e)
{
catchMess ();
}
}
else if (command.equals ("mv"))
{
try
{
arg1 = scanner.next();
arg2 = scanner.next();
mv (arg1, arg2);
}
catch (NoSuchElementException e)
{
catchMess ();
}
}
else if (command.equals ("cp"))
{
try
{
arg1 = scanner.next(); // send filename you want to copy
arg2 = scanner.next(); // send filename of the copy
cp (arg1, arg2);
}
catch (NoSuchElementException e)
{
catchMess ();
}
}
else if (command.equals ("exit") || command.equals ("logout") || command.equals ("logoff"))
break; // quit program
else
{
out.println ("wrong command or filename\n");
}
}
}
/************************* methods for the commands ***********************************/
public static void ls () // implements the list command
{
String[] catFiles = currentdir.list (); // list files in vectorform
for (int i = 0; i < catFiles.length; i++) // loop for printing out filelist
{
System.out.println (catFiles[i] + " ");
}
System.out.println ();
}
public static void pwd () throws Exception // shows current directory
{
System.out.println (currentdir.getCanonicalFile ());
System.out.println ();
}
public static void mkdir (String argument) // implements the makedirectory command
{
String curstring = currentdir.toString (); // makes current dirname to a string
File kat = new File (curstring, argument); // make a file object of the dir to make
if (kat.exists ()) // check if directory alredy exists and write mess
{
System.out.println ("The directory alredy exists");
System.out.println ();
}
else // else make directory and write mess
{
kat.mkdirs ();
System.out.println ("A directory with the name " + argument + " was created");
System.out.println ();
}
}
public static void rm (String argument) // implements the remove command, removes files and empty directorys
{
String curstring = currentdir.toString (); // makes current dirname to a string
File fd = new File (curstring, argument); // make a file object of the file or dir to delete
if (fd.exists ()) // check if file or dir exists and delete
{
fd.delete ();
System.out.println (argument + " was deleted");
System.out.println ();
}
else
{
System.out.println (argument + " doesnt exists");
System.out.println ();
}
}
/* if you write in runtime "cd /" or "cd \" the prompt will show ex. "C:\test\>" instead of "C:\test>" gonna see if i can fix this later*/
private static File cd (String argument)
{
File nextdir = new File (currentdir, argument); // make File object for the next dir
if (nextdir.isFile ()) // error managment if you try to point to a file
{
out.println ("not a directory"); // do nothing
out.println ();
}
else if (nextdir.exists ()) // check if directory exists
{
currentdir = nextdir; // point to the changed directory as the current
}
else // otherwise the dir doesent exists
{
out.println ("the directory doesent exists");
out.println ();
}
return currentdir;
}
public static void mv (String argument1, String argument2) throws Exception // implements the move/rename command, moving dirs is currently not working
{
File oldFile = new File (currentdir, argument1);
File newFile = new File (currentdir, argument2);
String curstring = currentdir.toString ();
if (!oldFile.exists ()) // if the source file doesent exists write mess
{
nofileMess ();
}
else if (newFile.exists ()) // if destination file alredy exists write mess
{
System.out.println ("The file or directory alredy exists");
System.out.println ();
}
else // else copy and delete file (move file)
{
afile.copy (argument1, argument2, curstring);
oldFile.renameTo (newFile);
oldFile.delete ();
System.out.println ("the file " + argument1 + " has been moved, and renamed to " + argument2);
System.out.println ();
}
}
/*throws ioException doesnt work for some reson, but Exception does the work :)*/
public static void cp (String argument1, String argument2) throws Exception // implements the copy command, reads one file an creates and writes a new file, copying dirs is currently not working
{
File oldfile = new File (currentdir, argument1); // make objects of the files you want to copy
File newfile = new File (currentdir, argument2);
String curstring = currentdir.toString ();
if (!oldfile.exists()) // if the file you want to copy dont exists write mess
{
nofileMess ();
}
else if (newfile.exists ()) // makes shure you dont copy over an existing file
{
System.out.println ("The targetfile alredy exists");
System.out.println ();
}
else // otherwise go on and copy :)
{
afile.copy (argument1, argument2, curstring);
System.out.println (argument1 + " was copied to " + argument2);
System.out.println ();
}
}
/************************** some methods for text messages ****************************/
public static void catchMess ()
{
System.out.println ("wrong argument(s), try again");
out.println ();
}
public static void nofileMess () // justs writes a message in some other methods where files dont exists
{
System.out.println ("The file or directory doesnt exists");
System.out.println ();
}
}
Kod: Markera allt
package ajava.edu;
import java.io.*;
import java.util.*;
public class afile
{
public static byte[] readbytes (int filesize, String filename, String directory) throws IOException // method that reads bytes from a file an store it in a variable
{
File file = new File (directory, filename);
FileInputStream end = new FileInputStream (file);
byte[] bv = new byte[filesize]; // fills a vector with bytes from a file
int nrOfbytes = end.read (bv); // read an store bytes to the vector
end.close ();
return (bv); // return vector to the calling program
}
public static void writebytes (byte[] bv, int filesize, String filename, String directory) throws IOException // method that writes bytes to a file
{
File file = new File (directory, filename);
FileOutputStream fout = new FileOutputStream (file); // open filestream
fout.write (bv); // write vector
fout.close ();
}
public static void copy (String argument1, String argument2, String directory) throws IOException // copy an old file and creates the copy in a new file, directorys is currently not working
{
File oldfile = new File (directory, argument1);
File newfile = new File (directory, argument2);
int filelength = (int) oldfile.length (); // get length of file to copy
newfile.createNewFile (); // make newfile
byte[] bytesTocopy = new byte[filelength];
bytesTocopy = readbytes (filelength, argument1, directory); // read the old file
writebytes (bytesTocopy, filelength, argument2, directory); // write the new file with data from the old file
}
}
