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lordscales91/Main.java

Created March 28, 2019 12:11
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Revisions

  1. lordscales91 created this gist Mar 28, 2019.
    120 changes: 120 additions & 0 deletions Main.java
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,120 @@
    package cleaner;

    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.IOException;
    import java.util.ArrayList;
    import java.util.Arrays;
    import java.util.List;
    import java.util.Scanner;

    import javax.swing.JFileChooser;

    public class Main {

    public static void main(String[] args) throws Exception {
    String rutaRepo = (args.length > 0)?args[0]:null;
    cleanInvalidJARs(rutaRepo);
    }

    private static void cleanInvalidJARs(String rutaRepo) {
    File mavenRepo = null;
    if(rutaRepo != null) {
    mavenRepo = new File(rutaRepo);
    } else {
    JFileChooser chooser = new JFileChooser();
    chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
    int op = chooser.showOpenDialog(null);
    if(op == JFileChooser.APPROVE_OPTION) {
    mavenRepo = chooser.getSelectedFile();
    }
    }

    if(mavenRepo != null) {
    List<File> invalidJARs = detectInvalidJARs(mavenRepo);
    for(File jar:invalidJARs) {
    System.out.println("Invalid JAR found at: "+jar.getAbsolutePath());
    }
    Scanner sc = new Scanner(System.in);
    if(invalidJARs.isEmpty()) {
    System.out.println("No invalid JARs found");
    } else {
    System.out.print("Do you want to delete them <Y/N>? ");
    String action = sc.nextLine();
    if(action.equals("Y")) {
    System.out.print("Do you want to delete the entire folders (includes the POM and other files) <Y/N>? ");
    action = sc.nextLine();
    deleteJARs(invalidJARs, action.equals("Y"));
    }
    }
    sc.close();
    }
    }

    private static void deleteJARs(List<File> jarList) {
    deleteJARs(jarList, true);
    }

    private static void deleteJARs(List<File> jarList, boolean deleteParent) {
    for(File f:jarList) {
    if(deleteParent) {
    System.out.println("Deleting "+f.getParentFile().getAbsolutePath());
    deleteDir(f.getParentFile());
    } else {
    System.out.println("Deleting "+f.getAbsolutePath());
    f.delete();
    }
    }
    }

    private static void deleteDir(File currentDir) {
    if(currentDir.listFiles().length == 0) {
    currentDir.delete();
    } else {
    for(File f:currentDir.listFiles()) {
    if(f.isDirectory()) {
    deleteDir(f);
    } else {
    f.delete();
    }
    }
    }
    }

    private static List<File> detectInvalidJARs(File currentDir) {
    List<File> invalidJARs = new ArrayList<>();
    for(File file:currentDir.listFiles()) {
    if(file.isDirectory()) {
    invalidJARs.addAll(detectInvalidJARs(file));
    } else {
    if(file.getName().endsWith(".jar")) {
    if(!validateJAR(file)) {
    invalidJARs.add(file);
    }
    }
    }
    }
    return invalidJARs;
    }

    private static boolean validateJAR(File jarFile) {
    boolean valid = false;
    byte[] buffer = new byte[4];
    byte[] jarSignature = new byte[]{0x50, 0x4B, 0x03, 0x04};
    try {
    FileInputStream fis = new FileInputStream(jarFile);
    if(fis.read(buffer) == 4) {
    valid = Arrays.equals(buffer, jarSignature);
    }
    fis.close();
    } catch (FileNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
    } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
    }
    return valid;
    }
    }