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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.io;
import java.io.File;
import java.net.URI;
import java.util.ArrayList;
/**
* An implementation of {@link IAbstractFolder} extending {@link File}.
*/
public class FolderWrapper extends File implements IAbstractFolder {
private static final long serialVersionUID = 1L;
/**
* Creates a new File instance from a parent abstract pathname and a child pathname string.
* @param parent the parent pathname
* @param child the child name
*
* @see File#File(File, String)
*/
public FolderWrapper(File parent, String child) {
super(parent, child);
}
/**
* Creates a new File instance by converting the given pathname string into an abstract
* pathname.
* @param pathname the pathname
*
* @see File#File(String)
*/
public FolderWrapper(String pathname) {
super(pathname);
}
/**
* Creates a new File instance from a parent abstract pathname and a child pathname string.
* @param parent the parent pathname
* @param child the child name
*
* @see File#File(String, String)
*/
public FolderWrapper(String parent, String child) {
super(parent, child);
}
/**
* Creates a new File instance by converting the given <code>file:</code> URI into an
* abstract pathname.
* @param uri An absolute, hierarchical URI with a scheme equal to "file", a non-empty path
* component, and undefined authority, query, and fragment components
*
* @see File#File(URI)
*/
public FolderWrapper(URI uri) {
super(uri);
}
/**
* Creates a new File instance matching a give {@link File} object.
* @param file the file to match
*/
public FolderWrapper(File file) {
super(file.getAbsolutePath());
}
public IAbstractResource[] listMembers() {
File[] files = listFiles();
final int count = files == null ? 0 : files.length;
IAbstractResource[] afiles = new IAbstractResource[count];
if (files != null) {
for (int i = 0 ; i < count ; i++) {
File f = files[i];
if (f.isFile()) {
afiles[i] = new FileWrapper(f);
} else if (f.isDirectory()) {
afiles[i] = new FolderWrapper(f);
}
}
}
return afiles;
}
public boolean hasFile(final String name) {
String[] match = list(new FilenameFilter() {
public boolean accept(IAbstractFolder dir, String filename) {
return name.equals(filename);
}
});
return match.length > 0;
}
public IAbstractFile getFile(String name) {
return new FileWrapper(this, name);
}
public IAbstractFolder getFolder(String name) {
return new FolderWrapper(this, name);
}
public IAbstractFolder getParentFolder() {
String p = this.getParent();
if (p == null) {
return null;
}
return new FolderWrapper(p);
}
public String getOsLocation() {
return getAbsolutePath();
}
@Override
public boolean exists() {
return isDirectory();
}
public String[] list(FilenameFilter filter) {
File[] files = listFiles();
if (files != null && files.length > 0) {
ArrayList<String> list = new ArrayList<String>();
for (File file : files) {
if (filter.accept(this, file.getName())) {
list.add(file.getName());
}
}
return list.toArray(new String[list.size()]);
}
return new String[0];
}
}
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