001 /**
002 * ===========================================================
003 * LibRepository : a free Java content repository access layer
004 * ===========================================================
005 *
006 * Project Info: http://jfreereport.pentaho.org/librepository/
007 *
008 * (C) Copyright 2006, by Pentaho Corporation and Contributors.
009 *
010 * This library is free software; you can redistribute it and/or modify it under the terms
011 * of the GNU Lesser General Public License as published by the Free Software Foundation;
012 * either version 2.1 of the License, or (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016 * See the GNU Lesser General Public License for more details.
017 *
018 * You should have received a copy of the GNU Lesser General Public License along with this
019 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020 * Boston, MA 02111-1307, USA.
021 *
022 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023 * in the United States and other countries.]
024 *
025 * ------------
026 * ZipEntryOutputStream.java
027 * ------------
028 * (C) Copyright 2006, by Pentaho Corporation.
029 */
030
031 package org.jfree.repository.zipwriter;
032
033 import java.io.ByteArrayInputStream;
034 import java.io.ByteArrayOutputStream;
035 import java.io.IOException;
036 import java.io.OutputStream;
037 import java.util.zip.DeflaterOutputStream;
038 import java.util.zip.InflaterInputStream;
039 import java.util.zip.ZipEntry;
040
041 /**
042 * Creation-Date: 01.12.2006, 21:26:23
043 *
044 * @author Thomas Morgner
045 */
046 public class ZipEntryOutputStream extends OutputStream
047 {
048 private ByteArrayOutputStream outputStream;
049 private DeflaterOutputStream deflaterOutputStream;
050 private boolean closed;
051 private ZipContentItem item;
052
053 public ZipEntryOutputStream(final ZipContentItem item)
054 {
055 this.item = item;
056 this.outputStream = new ByteArrayOutputStream();
057 this.deflaterOutputStream = new DeflaterOutputStream(outputStream);
058 }
059
060 public void write(final int b)
061 throws IOException
062 {
063 if (closed)
064 {
065 throw new IOException("Already closed");
066 }
067 deflaterOutputStream.write(b);
068 }
069
070 public void write(final byte[] b, final int off, final int len)
071 throws IOException
072 {
073 if (closed)
074 {
075 throw new IOException("Already closed");
076 }
077 deflaterOutputStream.write(b, off, len);
078 }
079
080 public void close()
081 throws IOException
082 {
083 if (closed)
084 {
085 throw new IOException("Already closed");
086 }
087
088 deflaterOutputStream.close();
089 final byte[] data = outputStream.toByteArray();
090 final ByteArrayInputStream bin = new ByteArrayInputStream(data);
091 final InflaterInputStream infi = new InflaterInputStream(bin);
092
093 final ZipRepository repository = (ZipRepository) item.getRepository();
094
095 final String contentId = (String) item.getContentId();
096 repository.writeContent(new ZipEntry(contentId), infi);
097 infi.close();
098
099 outputStream = null;
100 deflaterOutputStream = null;
101 }
102
103 public void write(final byte[] b)
104 throws IOException
105 {
106 if (closed)
107 {
108 throw new IOException("Already closed");
109 }
110 deflaterOutputStream.write(b);
111 }
112
113 public void flush()
114 throws IOException
115 {
116 if (closed)
117 {
118 throw new IOException("Already closed");
119 }
120 deflaterOutputStream.flush();
121 }
122 }