Mercurial > jhg

comparison src/com/tmate/hgkit/ll/HgDataFile.java @ 17:571e1b2cc3f7

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Query file for its parents. Demo of recently added ignore and digest support from within cat cmd
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 27 Dec 2010 01:43:08 +0100
parents fc265ddeab26
children e929cecae4e1
comparison
equal deleted inserted replaced
16:254078595653 17:571e1b2cc3f7
1 /** 1 /*
2 * Copyright (c) 2010 Artem Tikhomirov 2 * Copyright (c) 2010 Artem Tikhomirov
3 */ 3 */
4 package com.tmate.hgkit.ll; 4 package com.tmate.hgkit.ll;
5 5
6 import static com.tmate.hgkit.ll.HgRepository.TIP; 6 import static com.tmate.hgkit.ll.HgRepository.TIP;
7
8 import java.util.Arrays;
7 9
8 /** 10 /**
9 * Extends Revlog/uses RevlogStream? 11 * Extends Revlog/uses RevlogStream?
10 * ? name:HgFileNode? 12 * ? name:HgFileNode?
11 * @author artem 13 * @author artem
69 } 71 }
70 72
71 public void history(int start, int end, Changeset.Inspector i) { 73 public void history(int start, int end, Changeset.Inspector i) {
72 throw HgRepository.notImplemented(); 74 throw HgRepository.notImplemented();
73 } 75 }
76
77 /**
78 * XXX perhaps, return value Nodeid[2] and boolean needNodeids is better (and higher level) API for this query?
79 *
80 * @param revision - revision to query parents, or {@link HgRepository#TIP}
81 * @param parentRevisions - int[2] to get local revision numbers of parents (e.g. {6, -1})
82 * @param parent1 - byte[20] or null, if parent's nodeid is not needed
83 * @param parent2 - byte[20] or null, if second parent's nodeid is not needed
84 * @return
85 */
86 public void parents(int revision, int[] parentRevisions, byte[] parent1, byte[] parent2) {
87 if (revision != TIP && !(revision >= 0 && revision < content.revisionCount())) {
88 throw new IllegalArgumentException(String.valueOf(revision));
89 }
90 if (parentRevisions == null || parentRevisions.length < 2) {
91 throw new IllegalArgumentException(String.valueOf(parentRevisions));
92 }
93 if (parent1 != null && parent1.length < 20) {
94 throw new IllegalArgumentException(parent1.toString());
95 }
96 if (parent2 != null && parent2.length < 20) {
97 throw new IllegalArgumentException(parent2.toString());
98 }
99 class ParentCollector implements Revlog.Inspector {
100 public int p1 = -1;
101 public int p2 = -1;
102 public byte[] nodeid;
103
104 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, byte[] data) {
105 p1 = parent1Revision;
106 p2 = parent2Revision;
107 this.nodeid = new byte[20];
108 // nodeid arg now comes in 32 byte from (as in file format description), however upper 12 bytes are zeros.
109 System.arraycopy(nodeid, nodeid.length > 20 ? nodeid.length - 20 : 0, this.nodeid, 0, 20);
110 }
111 };
112 ParentCollector pc = new ParentCollector();
113 content.iterate(revision, revision, false, pc);
114 parentRevisions[0] = pc.p1;
115 parentRevisions[1] = pc.p2;
116 if (parent1 != null) {
117 if (parentRevisions[0] == -1) {
118 Arrays.fill(parent1, 0, 20, (byte) 0);
119 } else {
120 content.iterate(parentRevisions[0], parentRevisions[0], false, pc);
121 System.arraycopy(pc.nodeid, 0, parent1, 0, 20);
122 }
123 }
124 if (parent2 != null) {
125 if (parentRevisions[1] == -1) {
126 Arrays.fill(parent2, 0, 20, (byte) 0);
127 } else {
128 content.iterate(parentRevisions[1], parentRevisions[1], false, pc);
129 System.arraycopy(pc.nodeid, 0, parent2, 0, 20);
130 }
131 }
132 }
74 } 133 }