001 /* 002 * Copyright (C) 2012 eXo Platform SAS. 003 * 004 * This is free software; you can redistribute it and/or modify it 005 * under the terms of the GNU Lesser General Public License as 006 * published by the Free Software Foundation; either version 2.1 of 007 * the License, or (at your option) any later version. 008 * 009 * This software is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * You should have received a copy of the GNU Lesser General Public 015 * License along with this software; if not, write to the Free 016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 018 */ 019 020 package org.crsh.vfs; 021 022 import org.crsh.util.IO; 023 import org.crsh.vfs.spi.FSDriver; 024 025 import java.io.IOException; 026 import java.io.InputStream; 027 import java.util.ArrayList; 028 import java.util.List; 029 030 class Handle<H> { 031 032 /** . */ 033 private final FSDriver<H> driver; 034 035 /** . */ 036 final Key key; 037 038 /** . */ 039 final H handle; 040 041 Handle(FSDriver<H> driver, H handle) throws IOException { 042 String name = driver.name(handle); 043 boolean dir = driver.isDir(handle); 044 045 // 046 this.driver = driver; 047 this.handle = handle; 048 this.key = new Key(name, dir); 049 } 050 051 Iterable<Handle<H>> children() throws IOException { 052 List<Handle<H>> children = new ArrayList<Handle<H>>(); 053 for (H h : driver.children(handle)) { 054 children.add(new Handle<H>(driver, h)); 055 } 056 return children; 057 } 058 059 Resource getResource() throws IOException { 060 InputStream in = open(); 061 byte[] bytes = IO.readAsBytes(in); 062 long lastModified = getLastModified(); 063 return new Resource(bytes, lastModified); 064 } 065 066 InputStream open() throws IOException { 067 return driver.open(handle); 068 } 069 070 long getLastModified() throws IOException { 071 return driver.getLastModified(handle); 072 } 073 }