| /* |
| * Copyright (C) 2007, Robin Rosenberg <robin.rosenberg@dewire.com> |
| * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org> |
| * Copyright (C) 2009, Google Inc. |
| * and other copyright owners as documented in the project's IP log. |
| * |
| * This program and the accompanying materials are made available |
| * under the terms of the Eclipse Distribution License v1.0 which |
| * accompanies this distribution, is reproduced below, and is |
| * available at http://www.eclipse.org/org/documents/edl-v10.php |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * |
| * - Neither the name of the Eclipse Foundation, Inc. nor the |
| * names of its contributors may be used to endorse or promote |
| * products derived from this software without specific prior |
| * written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
| * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.eclipse.jgit.storage.file; |
| |
| import java.io.EOFException; |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.security.DigestOutputStream; |
| import java.security.MessageDigest; |
| import java.util.zip.Deflater; |
| import java.util.zip.DeflaterOutputStream; |
| |
| import org.eclipse.jgit.errors.ObjectWritingException; |
| import org.eclipse.jgit.lib.Config; |
| import org.eclipse.jgit.lib.Constants; |
| import org.eclipse.jgit.lib.CoreConfig; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.ObjectInserter; |
| |
| /** Creates loose objects in a {@link ObjectDirectory}. */ |
| class ObjectDirectoryInserter extends ObjectInserter { |
| private final ObjectDirectory db; |
| |
| private final Config config; |
| |
| private Deflater deflate; |
| |
| ObjectDirectoryInserter(final ObjectDirectory dest, final Config cfg) { |
| db = dest; |
| config = cfg; |
| } |
| |
| @Override |
| public ObjectId insert(final int type, long len, final InputStream is) |
| throws IOException { |
| final MessageDigest md = digest(); |
| final File tmp = toTemp(md, type, len, is); |
| final ObjectId id = ObjectId.fromRaw(md.digest()); |
| if (db.insertUnpackedObject(tmp, id, false /* no duplicate */)) |
| return id; |
| |
| final File dst = db.fileFor(id); |
| throw new ObjectWritingException("Unable to create new object: " + dst); |
| } |
| |
| @Override |
| public void flush() throws IOException { |
| // Do nothing. Objects are immediately visible. |
| } |
| |
| @Override |
| public void release() { |
| if (deflate != null) { |
| try { |
| deflate.end(); |
| } finally { |
| deflate = null; |
| } |
| } |
| } |
| |
| private File toTemp(final MessageDigest md, final int type, long len, |
| final InputStream is) throws IOException, FileNotFoundException, |
| Error { |
| boolean delete = true; |
| File tmp = newTempFile(); |
| try { |
| DigestOutputStream dOut = new DigestOutputStream( |
| compress(new FileOutputStream(tmp)), md); |
| try { |
| writeHeader(dOut, type, len); |
| |
| final byte[] buf = buffer(); |
| while (len > 0) { |
| int n = is.read(buf, 0, (int) Math.min(len, buf.length)); |
| if (n <= 0) |
| throw shortInput(len); |
| dOut.write(buf, 0, n); |
| len -= n; |
| } |
| } finally { |
| dOut.close(); |
| } |
| |
| delete = false; |
| return tmp; |
| } finally { |
| if (delete) |
| tmp.delete(); |
| } |
| } |
| |
| void writeHeader(OutputStream out, final int type, long len) |
| throws IOException { |
| out.write(Constants.encodedTypeString(type)); |
| out.write((byte) ' '); |
| out.write(Constants.encodeASCII(len)); |
| out.write((byte) 0); |
| } |
| |
| File newTempFile() throws IOException { |
| return File.createTempFile("noz", null, db.getDirectory()); |
| } |
| |
| DeflaterOutputStream compress(final OutputStream out) { |
| if (deflate == null) |
| deflate = new Deflater(config.get(CoreConfig.KEY).getCompression()); |
| else |
| deflate.reset(); |
| return new DeflaterOutputStream(out, deflate); |
| } |
| |
| private static EOFException shortInput(long missing) { |
| return new EOFException("Input did not match supplied length. " |
| + missing + " bytes are missing."); |
| } |
| } |