file manager

SforzandoCF

May 9th, 2025

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Java 10.48 KB | None | 0 0

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import java.awt.image.BufferedImage;
import java.io.DataInputStream;
import java.io.EOFException;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.Scanner;
import javax.imageio.ImageIO;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.UnsupportedAudioFileException;
public class Main {
public static void main (String[] args) {
Scanner scanner = new Scanner(System.console().reader());
File root = null;
FileInputStream reading = null;
while (true) {
if (scanner.hasNextLine()) {
String next = scanner.nextLine();
if (next.equals("/view-files")) {
root = File.listRoots()[0];
print(root);
} else if (next.startsWith("/view-file ")) {
try {
int number = Integer.parseInt(next.substring(11));
root = root.listFiles()[number];
} catch (NumberFormatException nfe) {
String name = next.substring(11);
for (File f : root.listFiles()) {
if (f.getName().endsWith(name)) {
root = f;
break;
}
if (f.getName().endsWith(name + "/")) {
root = f;
break;
}
}
}
print(root);
} else if (next.startsWith("/move-up")) {
root = root.getParentFile();
print(root);
} else if (next.startsWith("/inspect-file")) {
if (!root.isFile()) continue;
inspect(root);
} else if (next.startsWith("/inspect-text")) {
if (!root.isFile()) continue;
inspectAsText(root);
} else if (next.startsWith("/jump-to ")) {
File f = new File(next.substring(9));
if (f.exists()) {
root = f;
print(root);
}
} else if (next.startsWith("/view-root")) {
System.out.println(root);
} else if (next.startsWith("/open")) {
try {
reading = new FileInputStream(root);
System.out.println("file opened");
} catch (IOException ioe) {}
} else if (next.startsWith("/read ")) {
read(reading, Integer.parseInt(next.substring(6)));
}
if (root == null) {
System.out.println("internal error: file accesed does not exist");
root = File.listRoots()[0];
}
}
}
}
public static void print (File file) {
if (!file.isDirectory()) printFile(file);
File[] files = file.listFiles();
if (files == null) return;
if (files.length == 0) {
System.out.println("-> empty directory\n");
return;
}
for (int i = 0; i < files.length; i++)
System.out.println("[" + i + "] -> " + files[i] + (files[i].isDirectory() ? "/" : ""));
System.out.println();
}
public static void printFile (File f) {
BasicFileAttributes attrs;
try {
attrs = Files.readAttributes(f.toPath(), BasicFileAttributes.class);
} catch (IOException ioe) {
System.out.println(ioe);
return;
}
System.out.println("-> path: " + f.toString());
String name = f.getName();
String ext = (name.contains(".") ? name.substring(name.lastIndexOf(".")) : "none");
name = name.contains(".") ? name.substring(0, name.lastIndexOf(".")) : name;
if (f.getName().startsWith(".")) {
name = ext;
}
System.out.println("-> name: " + name);
System.out.println("-> extension: " + ext);
System.out.println();
System.out.println("-> time created: " + attrs.creationTime());
System.out.println("-> time last modified: " + attrs.lastModifiedTime());
System.out.println("-> time last accessed: " + attrs.lastAccessTime());
System.out.println();
System.out.println("-> executable: " + f.canExecute());
System.out.println("-> readable: " + f.canRead());
System.out.println("-> writable: " + f.canWrite());
System.out.println("-> hidden: " + f.isHidden());
System.out.println();
String type = "file";
if (attrs.isSymbolicLink()) type = "symlink";
if (attrs.isOther()) type = "other";
System.out.println("-> type: " + type);
System.out.println("-> file size: " + attrs.size());
System.out.println();
System.out.println("-> partition size: " + f.getTotalSpace());
}
private static void inspect (File f) {
if (tryInspectImage(f)) return;
if (tryInspectAudio(f)) return;
try {
DataInputStream d = new DataInputStream(new FileInputStream(f));
StringBuilder sb = new StringBuilder();
sb.append("-> ");
int index = 0;
int line = 0;
int chunk = 0;
while (true) {
try {
String b = Integer.toHexString(d.readByte());
if (b.length() < 2) b = "0".concat(b);
if (b.length() > 2) b = b.substring(b.length() - 2);
sb.append(b);
index++;
if (index == 16) {
index = 0;
line++;
if (line == 16) {
line = 0;
chunk++;
if (chunk == 3) {
System.out.println(sb.toString());
System.out.println("\n...\n");
return;
}
System.out.println(sb.toString());
sb = new StringBuilder();
}
sb.append("\n-> ");
} else {
sb.append(" ");
}
} catch (EOFException eof) {
System.out.println(sb.toString());
}
}
} catch (IOException ioe) {
System.out.println(ioe);
}
}
private static void inspectAsText (File f) {
try {
DataInputStream d = new DataInputStream(new FileInputStream(f));
StringBuilder sb = new StringBuilder();
sb.append("-> ");
int index = 0;
int line = 0;
int chunk = 0;
while (true) {
try {
sb.append(toChar(d.readByte()));
index++;
if (index == 16) {
index = 0;
line++;
if (line == 16) {
line = 0;
chunk++;
if (chunk == 3) {
System.out.println(sb.toString());
System.out.println("\n-> ...\n");
return;
}
System.out.println(sb.toString());
sb = new StringBuilder();
}
sb.append("\n-> ");
}
} catch (EOFException eof) {
System.out.println(sb.toString());
}
}
} catch (IOException ioe) {
System.out.println(ioe);
}
}
private static boolean tryInspectImage (File f) {
return tryInspectImage(f, true);
}
private static boolean tryInspectImage (File f, boolean loopInternally) {
try {
BufferedImage i = ImageIO.read(f);
if (i == null) return false;
System.out.println("-> width: " + i.getWidth());
System.out.println("-> height: " + i.getHeight());
System.out.println();
return true;
} catch (IOException ioe) {
if (loopInternally) return tryInspectImage(f, false);
return false;
}
}
private static boolean tryInspectAudio (File f) {
return tryInspectAudio(f, true);
}
private static boolean tryInspectAudio (File f, boolean loopInternally) {
try {
AudioFormat format = AudioSystem.getAudioInputStream(f).getFormat();
System.out.println("-> encoding: " + format.getEncoding());
String channels;
if (format.getChannels() == 1) channels = "mono";
else if (format.getChannels() == 2) channels = "stereo";
else channels = format.getChannels() + " channels";
System.out.println("-> channels: " + channels);
System.out.println("-> sample rate: " + format.getSampleRate());
System.out.println("-> sample size: " + format.getSampleSizeInBits() + "-bit");
System.out.println("-> big-endian: " + format.isBigEndian());
System.out.println();
return true;
} catch (IOException ioe) {
if (loopInternally) return tryInspectImage(f, false);
return false;
} catch (UnsupportedAudioFileException uafe) {
return false;
}
}
private static char toChar (byte b) {
if (b < 20) return '.';
return (char) b;
}
private static void read (FileInputStream fs, int amt) {
if (fs == null) return;
try {
for (int i = 0; i < amt; i++)
System.out.println(Integer.toHexString(fs.read()));
} catch (IOException ioe) {
System.out.println("io error occured");
}
}
}

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