package org.webslinger.commons.vfs.flat;

 import java.util.Collection;

 import java.util.Iterator;

 import org.apache.commons.vfs.FileName;

 import org.apache.commons.vfs.FileObject;

 import org.apache.commons.vfs.FileSystem;

 import org.apache.commons.vfs.FileSystemException;

 import org.webslinger.commons.vfs.handlers.attributes.AttributeMapper;

 import org.webslinger.commons.vfs.handlers.attributes.AttributeMapperHandler;

 import org.webslinger.commons.vfs.handlers.attributes.FlatAttributeMapper;

 public class StandardFlatAttributeMapperHandler implements AttributeMapperHandler {

     protected final FlatFileSystem fs;

     public StandardFlatAttributeMapperHandler(FlatFileSystem fs) {

         this.fs = fs;

     }

     public AttributeMapper getAttributeMapper(FileName name) throws FileSystemException {

         FileObject realFile = fs.resolveFile(name).getRealFile();

         FileObject parent = realFile.getParent();

         FileObject attrFile = parent != null ? parent.resolveFile(realFile.getName().getBaseName() + "@") : realFile.resolveFile("@");

         final FileName attrDirName = attrFile.getName();

         final FileSystem realFS = attrFile.getFileSystem();

         return new FlatAttributeMapper(fs) {

             protected FileObject getAttributeDir() throws FileSystemException {

                 return realFS.resolveFile(attrDirName);

             }

             protected FileObject getAttributeFile(FileName name) throws FileSystemException {

                 return realFS.resolveFile(name);

             }

         };

     }

     public void excludeNames(Collection<String> names) {

         Iterator<String> it = names.iterator();

         while (it.hasNext()) {

             String name = it.next();

             if (name.endsWith("@")) it.remove();

         }

     }

 }