001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.commons.vfs2.provider.gzip; 018 019import java.util.Arrays; 020import java.util.Collection; 021import java.util.Collections; 022 023import org.apache.commons.vfs2.Capability; 024import org.apache.commons.vfs2.FileName; 025import org.apache.commons.vfs2.FileObject; 026import org.apache.commons.vfs2.FileSystem; 027import org.apache.commons.vfs2.FileSystemException; 028import org.apache.commons.vfs2.FileSystemOptions; 029import org.apache.commons.vfs2.provider.compressed.CompressedFileFileProvider; 030 031/** 032 * Provides access to the content of gzip compressed files. 033 */ 034public class GzipFileProvider extends CompressedFileFileProvider { 035 /** 036 * Capabilities. 037 */ 038 protected static final Collection<Capability> capabilities = Collections.unmodifiableCollection(Arrays 039 .asList(new Capability[] { Capability.GET_LAST_MODIFIED, Capability.GET_TYPE, Capability.LIST_CHILDREN, 040 Capability.WRITE_CONTENT, Capability.READ_CONTENT, Capability.URI, Capability.COMPRESS })); 041 042 public GzipFileProvider() { 043 super(); 044 } 045 046 @Override 047 protected FileSystem createFileSystem(final FileName name, final FileObject file, 048 final FileSystemOptions fileSystemOptions) throws FileSystemException { 049 return new GzipFileSystem(name, file, fileSystemOptions); 050 } 051 052 @Override 053 public Collection<Capability> getCapabilities() { 054 return capabilities; 055 } 056}