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- /*
- * Copyright (C) 2008-2009, Google Inc.
- * Copyright (C) 2008, Marek Zawirski <marek.zawirski@gmail.com>
- * Copyright (C) 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.revwalk;
-
- import java.io.IOException;
- import java.nio.charset.Charset;
-
- import org.eclipse.jgit.errors.CorruptObjectException;
- import org.eclipse.jgit.errors.IncorrectObjectTypeException;
- import org.eclipse.jgit.errors.MissingObjectException;
- import org.eclipse.jgit.lib.AnyObjectId;
- import org.eclipse.jgit.lib.Constants;
- import org.eclipse.jgit.lib.PersonIdent;
- import org.eclipse.jgit.lib.Tag;
- import org.eclipse.jgit.util.MutableInteger;
- import org.eclipse.jgit.util.RawParseUtils;
-
- /** An annotated tag. */
- public class RevTag extends RevObject {
- private RevObject object;
-
- private byte[] buffer;
-
- private String tagName;
-
- /**
- * Create a new tag reference.
- *
- * @param id
- * object name for the tag.
- */
- protected RevTag(final AnyObjectId id) {
- super(id);
- }
-
- @Override
- void parseHeaders(final RevWalk walk) throws MissingObjectException,
- IncorrectObjectTypeException, IOException {
- parseCanonical(walk, loadCanonical(walk));
- }
-
- @Override
- void parseBody(final RevWalk walk) throws MissingObjectException,
- IncorrectObjectTypeException, IOException {
- if (buffer == null) {
- buffer = loadCanonical(walk);
- if ((flags & PARSED) == 0)
- parseCanonical(walk, buffer);
- }
- }
-
- void parseCanonical(final RevWalk walk, final byte[] rawTag)
- throws CorruptObjectException {
- final MutableInteger pos = new MutableInteger();
- final int oType;
-
- pos.value = 53; // "object $sha1\ntype "
- oType = Constants.decodeTypeString(this, rawTag, (byte) '\n', pos);
- walk.idBuffer.fromString(rawTag, 7);
- object = walk.lookupAny(walk.idBuffer, oType);
-
- int p = pos.value += 4; // "tag "
- final int nameEnd = RawParseUtils.nextLF(rawTag, p) - 1;
- tagName = RawParseUtils.decode(Constants.CHARSET, rawTag, p, nameEnd);
-
- if (walk.isRetainBody())
- buffer = rawTag;
- flags |= PARSED;
- }
-
- @Override
- public final int getType() {
- return Constants.OBJ_TAG;
- }
-
- /**
- * Parse the tagger identity from the raw buffer.
- * <p>
- * This method parses and returns the content of the tagger line, after
- * taking the tag's character set into account and decoding the tagger
- * name and email address. This method is fairly expensive and produces a
- * new PersonIdent instance on each invocation. Callers should invoke this
- * method only if they are certain they will be outputting the result, and
- * should cache the return value for as long as necessary to use all
- * information from it.
- *
- * @return identity of the tagger (name, email) and the time the tag
- * was made by the tagger; null if no tagger line was found.
- */
- public final PersonIdent getTaggerIdent() {
- final byte[] raw = buffer;
- final int nameB = RawParseUtils.tagger(raw, 0);
- if (nameB < 0)
- return null;
- return RawParseUtils.parsePersonIdent(raw, nameB);
- }
-
- /**
- * Parse the complete tag message and decode it to a string.
- * <p>
- * This method parses and returns the message portion of the tag buffer,
- * after taking the tag's character set into account and decoding the buffer
- * using that character set. This method is a fairly expensive operation and
- * produces a new string on each invocation.
- *
- * @return decoded tag message as a string. Never null.
- */
- public final String getFullMessage() {
- final byte[] raw = buffer;
- final int msgB = RawParseUtils.tagMessage(raw, 0);
- if (msgB < 0)
- return "";
- final Charset enc = RawParseUtils.parseEncoding(raw);
- return RawParseUtils.decode(enc, raw, msgB, raw.length);
- }
-
- /**
- * Parse the tag message and return the first "line" of it.
- * <p>
- * The first line is everything up to the first pair of LFs. This is the
- * "oneline" format, suitable for output in a single line display.
- * <p>
- * This method parses and returns the message portion of the tag buffer,
- * after taking the tag's character set into account and decoding the buffer
- * using that character set. This method is a fairly expensive operation and
- * produces a new string on each invocation.
- *
- * @return decoded tag message as a string. Never null. The returned string
- * does not contain any LFs, even if the first paragraph spanned
- * multiple lines. Embedded LFs are converted to spaces.
- */
- public final String getShortMessage() {
- final byte[] raw = buffer;
- final int msgB = RawParseUtils.tagMessage(raw, 0);
- if (msgB < 0)
- return "";
-
- final Charset enc = RawParseUtils.parseEncoding(raw);
- final int msgE = RawParseUtils.endOfParagraph(raw, msgB);
- String str = RawParseUtils.decode(enc, raw, msgB, msgE);
- if (RevCommit.hasLF(raw, msgB, msgE))
- str = str.replace('\n', ' ');
- return str;
- }
-
- /**
- * Parse this tag buffer for display.
- *
- * @param walk
- * revision walker owning this reference.
- * @return parsed tag.
- */
- public Tag asTag(final RevWalk walk) {
- return new Tag(walk.db, this, tagName, buffer);
- }
-
- /**
- * Get a reference to the object this tag was placed on.
- *
- * @return object this tag refers to.
- */
- public final RevObject getObject() {
- return object;
- }
-
- /**
- * Get the name of this tag, from the tag header.
- *
- * @return name of the tag, according to the tag header.
- */
- public final String getTagName() {
- return tagName;
- }
-
- final void disposeBody() {
- buffer = null;
- }
- }
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