| /* |
| * Copyright 2006 The Apache Software Foundation |
| * |
| * 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 org.apache.felix.moduleloader; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Enumeration; |
| |
| public class ContentDirectoryContent implements IContent |
| { |
| private IContent m_content = null; |
| private String m_rootPath = null; |
| private boolean m_opened = false; |
| |
| public ContentDirectoryContent(IContent content, String path) |
| { |
| m_content = content; |
| // Add a '/' to the end if not present. |
| m_rootPath = (path.length() > 0) && (path.charAt(path.length() - 1) != '/') |
| ? path + "/" : path; |
| } |
| |
| protected void finalize() |
| { |
| if (m_content != null) |
| { |
| m_content.close(); |
| } |
| } |
| |
| public void open() |
| { |
| m_content.open(); |
| m_opened = true; |
| } |
| |
| public synchronized void close() |
| { |
| try |
| { |
| if (m_content != null) |
| { |
| m_content.close(); |
| } |
| } |
| catch (Exception ex) |
| { |
| System.err.println("JarContent: " + ex); |
| } |
| |
| m_content = null; |
| m_opened = false; |
| } |
| |
| public synchronized boolean hasEntry(String name) throws IllegalStateException |
| { |
| if (!m_opened) |
| { |
| throw new IllegalStateException("ContentDirectoryContent is not open"); |
| } |
| |
| if ((name.length() > 0) && (name.charAt(0) == '/')) |
| { |
| name = name.substring(1); |
| } |
| |
| return m_content.hasEntry(m_rootPath + name); |
| } |
| |
| public synchronized byte[] getEntry(String name) throws IllegalStateException |
| { |
| if (!m_opened) |
| { |
| throw new IllegalStateException("ContentDirectoryContent is not open"); |
| } |
| |
| if ((name.length() > 0) && (name.charAt(0) == '/')) |
| { |
| name = name.substring(1); |
| } |
| |
| return m_content.getEntry(m_rootPath + name); |
| } |
| |
| public synchronized InputStream getEntryAsStream(String name) |
| throws IllegalStateException, IOException |
| { |
| if (!m_opened) |
| { |
| throw new IllegalStateException("ContentDirectoryContent is not open"); |
| } |
| |
| if ((name.length() > 0) && (name.charAt(0) == '/')) |
| { |
| name = name.substring(1); |
| } |
| |
| return m_content.getEntryAsStream(m_rootPath + name); |
| } |
| |
| public synchronized Enumeration getEntryPaths(String path) |
| { |
| if (!m_opened) |
| { |
| throw new IllegalStateException("ContentDirectoryContent is not open"); |
| } |
| |
| if ((path.length() > 0) && (path.charAt(0) == '/')) |
| { |
| path = path.substring(1); |
| } |
| |
| return new WrappedEnumeration(m_content.getEntryPaths(m_rootPath + path), m_rootPath); |
| } |
| |
| public String toString() |
| { |
| return "CONTENT DIR " + m_rootPath + " (" + m_content + ")"; |
| } |
| |
| private static class WrappedEnumeration implements Enumeration |
| { |
| private Enumeration m_enumeration = null; |
| private String m_rootPath = null; |
| |
| public WrappedEnumeration(Enumeration enumeration, String rootPath) |
| { |
| m_enumeration = enumeration; |
| m_rootPath = rootPath; |
| } |
| |
| public boolean hasMoreElements() |
| { |
| return m_enumeration.hasMoreElements(); |
| } |
| |
| public Object nextElement() |
| { |
| // We need to treat the specified path as the root of the |
| // content, so we need to strip off the leading path from |
| // each entry because it is automatically added back on |
| // in the other calls above. |
| return ((String) m_enumeration.nextElement()).substring(m_rootPath.length()); |
| } |
| } |
| } |