ohair@286: /*
mkos@384:  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
ohair@286:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohair@286:  *
ohair@286:  * This code is free software; you can redistribute it and/or modify it
ohair@286:  * under the terms of the GNU General Public License version 2 only, as
ohair@286:  * published by the Free Software Foundation.  Oracle designates this
ohair@286:  * particular file as subject to the "Classpath" exception as provided
ohair@286:  * by Oracle in the LICENSE file that accompanied this code.
ohair@286:  *
ohair@286:  * This code is distributed in the hope that it will be useful, but WITHOUT
ohair@286:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohair@286:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ohair@286:  * version 2 for more details (a copy is included in the LICENSE file that
ohair@286:  * accompanied this code).
ohair@286:  *
ohair@286:  * You should have received a copy of the GNU General Public License version
ohair@286:  * 2 along with this work; if not, write to the Free Software Foundation,
ohair@286:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohair@286:  *
ohair@286:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@286:  * or visit www.oracle.com if you need additional information or have any
ohair@286:  * questions.
ohair@286:  */
ohair@286: 
ohair@286: package com.sun.xml.internal.org.jvnet.mimepull;
ohair@286: 
ohair@286: import java.nio.ByteBuffer;
ohair@286: import java.io.File;
ohair@286: import java.io.IOException;
alanb@368: import java.util.logging.Level;
ohair@286: import java.util.logging.Logger;
ohair@286: 
ohair@286: /**
ohair@286:  * Keeps the Part's partial content data in memory.
ohair@286:  *
ohair@286:  * @author Kohsuke Kawaguchi
ohair@286:  * @author Jitendra Kotamraju
ohair@286:  */
ohair@286: final class MemoryData implements Data {
ohair@286:     private static final Logger LOGGER = Logger.getLogger(MemoryData.class.getName());
ohair@286: 
ohair@286:     private final byte[] data;
ohair@286:     private final int len;
ohair@286:     private final MIMEConfig config;
ohair@286: 
ohair@286:     MemoryData(ByteBuffer buf, MIMEConfig config) {
ohair@286:         data = buf.array();
ohair@286:         len = buf.limit();
ohair@286:         this.config = config;
ohair@286:     }
ohair@286: 
ohair@286:     // size of the chunk given by the parser
alanb@368:     @Override
ohair@286:     public int size() {
ohair@286:         return len;
ohair@286:     }
ohair@286: 
alanb@368:     @Override
ohair@286:     public byte[] read() {
ohair@286:         return data;
ohair@286:     }
ohair@286: 
alanb@368:     @Override
ohair@286:     public long writeTo(DataFile file) {
ohair@286:         return file.writeTo(data, 0, len);
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      *
ohair@286:      * @param dataHead
ohair@286:      * @param buf
ohair@286:      * @return
ohair@286:      */
alanb@368:     @Override
ohair@286:     public Data createNext(DataHead dataHead, ByteBuffer buf) {
ohair@286:         if (!config.isOnlyMemory() && dataHead.inMemory >= config.memoryThreshold) {
ohair@286:             try {
ohair@286:                 String prefix = config.getTempFilePrefix();
ohair@286:                 String suffix = config.getTempFileSuffix();
mkos@384:                 File tempFile = TempFiles.createTempFile(prefix, suffix, config.getTempDir());
mkos@384:                 // delete the temp file when VM exits as a last resort for file clean up
mkos@384:                 tempFile.deleteOnExit();
mkos@384:                 if (LOGGER.isLoggable(Level.FINE)) {
mkos@384:                     LOGGER.log(Level.FINE, "Created temp file = {0}", tempFile);
mkos@384:                 }
ohair@286:                 // delete the temp file when VM exits as a last resort for file clean up
ohair@286:                 tempFile.deleteOnExit();
alanb@368:                 if (LOGGER.isLoggable(Level.FINE)) {LOGGER.log(Level.FINE, "Created temp file = {0}", tempFile);}
ohair@286:                 dataHead.dataFile = new DataFile(tempFile);
mkos@384:             } catch (IOException ioe) {
ohair@286:                 throw new MIMEParsingException(ioe);
ohair@286:             }
ohair@286: 
ohair@286:             if (dataHead.head != null) {
mkos@384:                 for (Chunk c = dataHead.head; c != null; c = c.next) {
ohair@286:                     long pointer = c.data.writeTo(dataHead.dataFile);
ohair@286:                     c.data = new FileData(dataHead.dataFile, pointer, len);
ohair@286:                 }
ohair@286:             }
ohair@286:             return new FileData(dataHead.dataFile, buf);
ohair@286:         } else {
ohair@286:             return new MemoryData(buf, config);
ohair@286:         }
ohair@286:     }
mkos@384: 
ohair@286: }