001: /*
002: * ====================================================================
003: *
004: * The Apache Software License, Version 1.1
005: *
006: * Copyright (c) 1999-2003 The Apache Software Foundation.
007: * All rights reserved.
008: *
009: * Redistribution and use in source and binary forms, with or without
010: * modification, are permitted provided that the following conditions
011: * are met:
012: *
013: * 1. Redistributions of source code must retain the above copyright
014: * notice, this list of conditions and the following disclaimer.
015: *
016: * 2. Redistributions in binary form must reproduce the above copyright
017: * notice, this list of conditions and the following disclaimer in
018: * the documentation and/or other materials provided with the
019: * distribution.
020: *
021: * 3. The end-user documentation included with the redistribution, if
022: * any, must include the following acknowledgement:
023: * "This product includes software developed by the
024: * Apache Software Foundation (http://www.apache.org/)."
025: * Alternately, this acknowledgement may appear in the software itself,
026: * if and wherever such third-party acknowledgements normally appear.
027: *
028: * 4. The names "The Jakarta Project", "Commons", and "Apache Software
029: * Foundation" must not be used to endorse or promote products derived
030: * from this software without prior written permission. For written
031: * permission, please contact apache@apache.org.
032: *
033: * 5. Products derived from this software may not be called "Apache"
034: * nor may "Apache" appear in their names without prior written
035: * permission of the Apache Software Foundation.
036: *
037: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
038: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
039: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
040: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
041: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
042: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
043: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
044: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
045: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
046: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
047: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
048: * SUCH DAMAGE.
049: * ====================================================================
050: *
051: * This software consists of voluntary contributions made by many
052: * individuals on behalf of the Apache Software Foundation. For more
053: * information on the Apache Software Foundation, please see
054: * <http://www.apache.org/>.
055: *
056: */
057:
058: package org.apache.commons.jrcs.rcs;
059:
060: import java.util.List;
061:
062: /**
063: * Represents a node on the trunk or main branch of a version control Archive.
064: *
065: * <p>A {@link TrunkNode TrunkNode} stores the deltas between the node's
066: * revision and the previous revision;
067: * that is, when the deltas are applied to the current revision, the
068: * text of the previous revision is obtained.
069: * The {@link Node#rcsnext rcsnext} field of a TrunkNode
070: * points to the node corresponding to the previous revision.</p>
071: * This class is NOT thread safe.
072: *
073: * @see Node
074: * @see Archive
075: *
076: * @author <a href="mailto:juanco@suigeneris.org">Juanco Anez</a>
077: * @version $Id: TrunkNode.java 2967 2005-10-26 10:52:33Z ian@caret.cam.ac.uk $
078: */
079: class TrunkNode extends Node {
080:
081: /**
082: * Create a TrunkNode bu copying another TrunkNode.
083: */
084: TrunkNode(TrunkNode other) {
085: super (other);
086: }
087:
088: /**
089: * Create a TrunkNode.
090: * The next field in a TrunkNode points to the immediate
091: * previos revision or parent.
092: */
093: TrunkNode(Version vernum, TrunkNode next)
094: throws InvalidTrunkVersionNumberException {
095: super (vernum, next);
096: if (vernum.size() > 2) {
097: throw new InvalidTrunkVersionNumberException(vernum);
098: }
099: }
100:
101: /**
102: * Set the next node in the RCS logical hierarcy.
103: * Update the _parent and _child node accordingly.
104: * For a TrunkNode, the RCS-next is the immediate parent.
105: */
106: public void setRCSNext(Node node) {
107: super .setRCSNext(node);
108: if (this .getParent() != null) {
109: this .getParent().child = null;
110: }
111: this .parent = node;
112: if (this .getParent() != null) {
113: this .getParent().child = this ;
114: }
115: }
116:
117: public Node deltaRevision() {
118: return (getChild() != null ? getChild() : this );
119: }
120:
121: public Node nextInPathTo(Version vernum, boolean soft)
122: throws NodeNotFoundException {
123: Version branchPoint = vernum.getBase(2);
124: if (this .version.isLessThan(branchPoint)) {
125: if (soft) {
126: return null;
127: } else {
128: throw new NodeNotFoundException(vernum);
129: }
130: }
131:
132: Version this Base = this .version.getBase(branchPoint.size());
133: if (this Base.isGreaterThan(branchPoint)) {
134: return getParent();
135: } else if (vernum.size() > this .version.size()) {
136: Node branch = getBranch(vernum.at(this .version.size()));
137: if (branch != null || soft) {
138: return branch;
139: } else {
140: throw new BranchNotFoundException(vernum
141: .getBase(this .version.size() + 1));
142: }
143: } else {
144: return null;
145: }
146: }
147:
148: /**
149: * Provide the initial patch.
150: * Used only for head nodes.
151: * @param original Where to add the patch to.
152: * @param annotate True if the lines should be annotated with version numbers.
153: */
154: protected void patch0(List original, boolean annotate)
155: throws InvalidFileFormatException, NodeNotFoundException,
156: org.apache.commons.jrcs.diff.PatchFailedException {
157: Node root = this .root();
158: for (int it = 0; it < getText().length; it++) {
159: original.add(new Line(root, getText()[it]));
160: }
161: if (annotate && getParent() != null) {
162: getParent().pathTo(root.version).patch(original, true);
163: }
164: }
165: }
|