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- /*
- * Copyright (C) 2008-2009, Google Inc.
- * Copyright (C) 2008, Marek Zawirski <marek.zawirski@gmail.com>
- * Copyright (C) 2007-2009, Robin Rosenberg <robin.rosenberg@dewire.com>
- * Copyright (C) 2006-2008, Shawn O. Pearce <spearce@spearce.org>
- * 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.lib;
-
- import org.eclipse.jgit.errors.InvalidObjectIdException;
- import org.eclipse.jgit.util.NB;
- import org.eclipse.jgit.util.RawParseUtils;
-
- /**
- * A mutable SHA-1 abstraction.
- */
- public class MutableObjectId extends AnyObjectId {
- /**
- * Empty constructor. Initialize object with default (zeros) value.
- */
- public MutableObjectId() {
- super();
- }
-
- /**
- * Copying constructor.
- *
- * @param src
- * original entry, to copy id from
- */
- MutableObjectId(MutableObjectId src) {
- this.w1 = src.w1;
- this.w2 = src.w2;
- this.w3 = src.w3;
- this.w4 = src.w4;
- this.w5 = src.w5;
- }
-
- /** Make this id match {@link ObjectId#zeroId()}. */
- public void clear() {
- w1 = 0;
- w2 = 0;
- w3 = 0;
- w4 = 0;
- w5 = 0;
- }
-
- /**
- * Convert an ObjectId from raw binary representation.
- *
- * @param bs
- * the raw byte buffer to read from. At least 20 bytes must be
- * available within this byte array.
- */
- public void fromRaw(final byte[] bs) {
- fromRaw(bs, 0);
- }
-
- /**
- * Convert an ObjectId from raw binary representation.
- *
- * @param bs
- * the raw byte buffer to read from. At least 20 bytes after p
- * must be available within this byte array.
- * @param p
- * position to read the first byte of data from.
- */
- public void fromRaw(final byte[] bs, final int p) {
- w1 = NB.decodeInt32(bs, p);
- w2 = NB.decodeInt32(bs, p + 4);
- w3 = NB.decodeInt32(bs, p + 8);
- w4 = NB.decodeInt32(bs, p + 12);
- w5 = NB.decodeInt32(bs, p + 16);
- }
-
- /**
- * Convert an ObjectId from binary representation expressed in integers.
- *
- * @param ints
- * the raw int buffer to read from. At least 5 integers must be
- * available within this integers array.
- */
- public void fromRaw(final int[] ints) {
- fromRaw(ints, 0);
- }
-
- /**
- * Convert an ObjectId from binary representation expressed in integers.
- *
- * @param ints
- * the raw int buffer to read from. At least 5 integers after p
- * must be available within this integers array.
- * @param p
- * position to read the first integer of data from.
- *
- */
- public void fromRaw(final int[] ints, final int p) {
- w1 = ints[p];
- w2 = ints[p + 1];
- w3 = ints[p + 2];
- w4 = ints[p + 3];
- w5 = ints[p + 4];
- }
-
- /**
- * Convert an ObjectId from hex characters (US-ASCII).
- *
- * @param buf
- * the US-ASCII buffer to read from. At least 40 bytes after
- * offset must be available within this byte array.
- * @param offset
- * position to read the first character from.
- */
- public void fromString(final byte[] buf, final int offset) {
- fromHexString(buf, offset);
- }
-
- /**
- * Convert an ObjectId from hex characters.
- *
- * @param str
- * the string to read from. Must be 40 characters long.
- */
- public void fromString(final String str) {
- if (str.length() != Constants.OBJECT_ID_STRING_LENGTH)
- throw new IllegalArgumentException("Invalid id: " + str);
- fromHexString(Constants.encodeASCII(str), 0);
- }
-
- private void fromHexString(final byte[] bs, int p) {
- try {
- w1 = RawParseUtils.parseHexInt32(bs, p);
- w2 = RawParseUtils.parseHexInt32(bs, p + 8);
- w3 = RawParseUtils.parseHexInt32(bs, p + 16);
- w4 = RawParseUtils.parseHexInt32(bs, p + 24);
- w5 = RawParseUtils.parseHexInt32(bs, p + 32);
- } catch (ArrayIndexOutOfBoundsException e1) {
- throw new InvalidObjectIdException(bs, p,
- Constants.OBJECT_ID_STRING_LENGTH);
- }
- }
-
- @Override
- public ObjectId toObjectId() {
- return new ObjectId(this);
- }
- }
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