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- /*
- * Copyright (C) 2010, 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.internal.storage.file;
-
- import java.io.IOException;
-
- import org.eclipse.jgit.internal.storage.pack.StoredObjectRepresentation;
- import org.eclipse.jgit.lib.ObjectId;
-
- class LocalObjectRepresentation extends StoredObjectRepresentation {
- static LocalObjectRepresentation newWhole(PackFile f, long p, long length) {
- LocalObjectRepresentation r = new LocalObjectRepresentation() {
- @Override
- public int getFormat() {
- return PACK_WHOLE;
- }
- };
- r.pack = f;
- r.offset = p;
- r.length = length;
- return r;
- }
-
- static LocalObjectRepresentation newDelta(PackFile f, long p, long n,
- ObjectId base) {
- LocalObjectRepresentation r = new Delta();
- r.pack = f;
- r.offset = p;
- r.length = n;
- r.baseId = base;
- return r;
- }
-
- static LocalObjectRepresentation newDelta(PackFile f, long p, long n,
- long base) {
- LocalObjectRepresentation r = new Delta();
- r.pack = f;
- r.offset = p;
- r.length = n;
- r.baseOffset = base;
- return r;
- }
-
- PackFile pack;
-
- long offset;
-
- long length;
-
- private long baseOffset;
-
- private ObjectId baseId;
-
- /** {@inheritDoc} */
- @Override
- public int getWeight() {
- return (int) Math.min(length, Integer.MAX_VALUE);
- }
-
- /** {@inheritDoc} */
- @Override
- public ObjectId getDeltaBase() {
- if (baseId == null && getFormat() == PACK_DELTA) {
- try {
- baseId = pack.findObjectForOffset(baseOffset);
- } catch (IOException error) {
- return null;
- }
- }
- return baseId;
- }
-
- private static final class Delta extends LocalObjectRepresentation {
- @Override
- public int getFormat() {
- return PACK_DELTA;
- }
- }
- }
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