CODEWITHSUNDEEP
java
Stealth
Stealth

Reputation: 15

exclude a particular directory and exclude a list of files

The code I have works for copying all direcotries and files but not sure on how to exclude a
particular directory under music and exclude a list of files

1) For example, I have Music folder and lots of subdirectories. Want to exclude spanish subdirectory and copy everything under Music folder to destination

The second condition which I wanted to check is

2) Under Music folder I wanted to exclude all text files and copy

`    private void copyFiles(File src, File tgt) throws IOException
                   {

                     if(src.isDirectory())
                   {
         try{
                if(!tgt.exists()) tgt.mkdirs();
                String[] filePaths = src.list();
                for(String filePath : filePaths)
               {
                File srcFile = new File(src, filePath);
                File destFile = new File(tgt, filePath);
                copyFiles(srcFile, destFile);
               }
          }
        catch(Exception ie)
              {
                ie.printStackTrace();
              }
         }
    else
             {
                try
                     {
                        bis = new BufferedInputStream(new FileInputStream(src));
                        bos = new BufferedOutputStream(new FileOutputStream(tgt));
                        long fileBytes = src.length();
                        long soFar = 0;
                        int Byte;
             while((Byte = bis.read()) != -1)
                       {
                         bos.write(Byte);

                       }
                          bis.close();
                          bos.close();

                      }
           catch(Exception excep)
                            {
                              excep.printStackTrace();
                              bos.flush();
                              bis.close();
                              bos.close();

                            }`

Upvotes: 1

Views: 4968

Answers (1)

MadProgrammer
MadProgrammer

Reputation: 347314

File#listFiles takes a FileFilter which can be used to determine if certain files should be included or not in the listing returne by File#listFiles...

This is okay if you know in advance what you to to include/exclude. If you want to make the process more dynamic, you could pass a list of FileFilters to the copy method and then use a special FileFilter to iterate over them...

private void copyFiles(File src, File tgt, FileFilter... filters) {
    /*...*/
    File[] filePaths = src.listFiles(new GroupedFileFiler(filters));
    /*...*/
}

public class GroupedFileFilter implements FileFilter {

    private FileFilter[] filters;

    public GroupedFileFilter(FileFilter... filters) {
        this.filters = filters;
    }

    @Override
    public boolean accept(File pathname) {
        boolean include = true;
        if (filters != null && filters.length > 0) {
            for (FileFilter filter : filters) {
                include = filter.accept(pathname);
                if (!include) {
                    break;
                }
            }
        }
        return include;
    }
}

Upvotes: 2

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