Mercurial > jhg

annotate src/org/tmatesoft/hg/core/Nodeid.java @ 305:ae8d116f4ee2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Experimental code to build file history
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 22 Sep 2011 03:57:38 +0200
parents 85b8efde5586
children 465316bf97e8
rev   line source
20
11cfabe692b3 Status operation for two repository revisions (no local dir involved)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 13
diff changeset
1 /*
74
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
2 * Copyright (c) 2010-2011 TMate Software Ltd
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
3 *
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
4 * This program is free software; you can redistribute it and/or modify
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
5 * it under the terms of the GNU General Public License as published by
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
6 * the Free Software Foundation; version 2 of the License.
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
7 *
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
8 * This program is distributed in the hope that it will be useful,
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
11 * GNU General Public License for more details.
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
12 *
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
13 * For information on how to redistribute this software under
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
14 * the terms of a license other than GNU General Public License
102
a3a2e5deb320 Updated contact address to support@hg4j.com
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 78
diff changeset
15 * contact TMate Software at support@hg4j.com
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
16 */
74
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
17 package org.tmatesoft.hg.core;
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
18
74
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
19 import static org.tmatesoft.hg.internal.DigestHelper.toHexString;
31
346b66add79d Basic lookup for incoming changes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 28
diff changeset
20
24
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
21 import java.util.Arrays;
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
22
266
0a2f445de774 Improve manifest parsing: reduce number of arrays instantiated for Nodeid
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 262
diff changeset
23 import org.tmatesoft.hg.internal.DigestHelper;
0a2f445de774 Improve manifest parsing: reduce number of arrays instantiated for Nodeid
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 262
diff changeset
24
20
11cfabe692b3 Status operation for two repository revisions (no local dir involved)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 13
diff changeset
25
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
26
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
27 /**
74
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
28 * A 20-bytes (40 characters) long hash value to identify a revision.
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
29 * @see http://mercurial.selenic.com/wiki/Nodeid
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
30 *
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
31 * @author Artem Tikhomirov
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
32 * @author TMate Software Ltd.
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
33 *
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
34 */
170
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
35 public final class Nodeid implements Comparable<Nodeid> {
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
36
74
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
37 /**
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
38 * <b>nullid</b>, empty root revision.
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
39 */
31
346b66add79d Basic lookup for incoming changes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 28
diff changeset
40 public static final Nodeid NULL = new Nodeid(new byte[20], false);
74
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
41
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
42 private final byte[] binaryData;
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
43
24
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
44 /**
74
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
45 * @param binaryRepresentation - array of exactly 20 bytes
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
46 * @param shallClone - true if array is subject to future modification and shall be copied, not referenced
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
47 * @throws IllegalArgumentException if supplied binary representation doesn't correspond to 20 bytes of sha1 digest
24
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
48 */
28
b2251b7a9823 Explicit cons arg for clone is more error-prone
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 24
diff changeset
49 public Nodeid(byte[] binaryRepresentation, boolean shallClone) {
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
50 // 5 int fields => 32 bytes
197
3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
51 // byte[20] => 48 bytes (16 bytes is Nodeid with one field, 32 bytes for byte[20]
24
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
52 if (binaryRepresentation == null || binaryRepresentation.length != 20) {
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
53 throw new IllegalArgumentException();
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
54 }
197
3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
55 /*
3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
56 * byte[].clone() is not reflected when ran with -agentlib:hprof=heap=sites
3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
57 * thus not to get puzzled why there are N Nodeids and much less byte[] instances,
3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
58 * may use following code to see N byte[] as well.
3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
59 *
3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
60 if (shallClone) {
3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
61 binaryData = new byte[20];
3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
62 System.arraycopy(binaryRepresentation, 0, binaryData, 0, 20);
3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
63 } else {
3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
64 binaryData = binaryRepresentation;
3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
65 }
3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
66 */
3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
67 binaryData = shallClone ? binaryRepresentation.clone() : binaryRepresentation;
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
68 }
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
69
24
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
70 @Override
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
71 public int hashCode() {
46
4022c34a4804 Better hashCode impl
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 41
diff changeset
72 // digest (part thereof) seems to be nice candidate for the hashCode
4022c34a4804 Better hashCode impl
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 41
diff changeset
73 byte[] b = binaryData;
4022c34a4804 Better hashCode impl
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 41
diff changeset
74 return b[0] << 24 | (b[1] & 0xFF) << 16 | (b[2] & 0xFF) << 8 | (b[3] & 0xFF);
24
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
75 }
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
76
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
77 @Override
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
78 public boolean equals(Object o) {
304
85b8efde5586 Use memory-friendly set implementation to canonicalize filenames and nodeids
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 301
diff changeset
79 if (o == this) {
85b8efde5586 Use memory-friendly set implementation to canonicalize filenames and nodeids
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 301
diff changeset
80 return true;
85b8efde5586 Use memory-friendly set implementation to canonicalize filenames and nodeids
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 301
diff changeset
81 }
24
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
82 if (o instanceof Nodeid) {
304
85b8efde5586 Use memory-friendly set implementation to canonicalize filenames and nodeids
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 301
diff changeset
83 return equalsTo(((Nodeid) o).binaryData);
24
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
84 }
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
85 return false;
22
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 20
diff changeset
86 }
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 20
diff changeset
87
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 20
diff changeset
88 public boolean equalsTo(byte[] buf) {
24
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
89 return Arrays.equals(this.binaryData, buf);
22
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 20
diff changeset
90 }
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 20
diff changeset
91
170
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
92 public int compareTo(Nodeid o) {
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
93 if (this == o) {
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
94 return 0;
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
95 }
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
96 for (int i = 0; i < 20; i++) {
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
97 if (binaryData[i] != o.binaryData[i]) {
301
88c58edc0857 Remarks about sorting order
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 266
diff changeset
98 // if we need truly ascending sort, need to respect byte sign
88c58edc0857 Remarks about sorting order
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 266
diff changeset
99 // return (binaryData[i] & 0xFF) < (o.binaryData[i] & 0xFF) ? -1 : 1;
88c58edc0857 Remarks about sorting order
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 266
diff changeset
100 // however, for our purposes partial sort is pretty enough
170
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
101 return binaryData[i] < o.binaryData[i] ? -1 : 1;
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
102 }
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
103 }
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
104 return 0;
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
105 }
244
4b661efb9374 Use updated location of cache files (cache/ folder instead of .cache filename extension). Provide means to update (write down) cache for subsequent uses
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 197
diff changeset
106
4b661efb9374 Use updated location of cache files (cache/ folder instead of .cache filename extension). Provide means to update (write down) cache for subsequent uses
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 197
diff changeset
107 /**
4b661efb9374 Use updated location of cache files (cache/ folder instead of .cache filename extension). Provide means to update (write down) cache for subsequent uses
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 197
diff changeset
108 * Complete string representation of this Nodeid.
4b661efb9374 Use updated location of cache files (cache/ folder instead of .cache filename extension). Provide means to update (write down) cache for subsequent uses
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 197
diff changeset
109 */
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
110 @Override
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
111 public String toString() {
34
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
112 // XXX may want to output just single 0 for the NULL id?
31
346b66add79d Basic lookup for incoming changes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 28
diff changeset
113 return toHexString(binaryData, 0, binaryData.length);
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
114 }
31
346b66add79d Basic lookup for incoming changes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 28
diff changeset
115
346b66add79d Basic lookup for incoming changes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 28
diff changeset
116 public String shortNotation() {
346b66add79d Basic lookup for incoming changes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 28
diff changeset
117 return toHexString(binaryData, 0, 6);
346b66add79d Basic lookup for incoming changes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 28
diff changeset
118 }
34
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
119
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
120 public boolean isNull() {
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
121 if (this == NULL) {
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
122 return true;
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
123 }
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
124 for (int i = 0; i < 20; i++) {
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
125 if (this.binaryData[i] != 0) {
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
126 return false;
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
127 }
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
128 }
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
129 return true;
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
130 }
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
131
74
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
132 // copy
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 46
diff changeset
133 public byte[] toByteArray() {
41
858d1b2458cb Check integrity for bundle changelog. Sort nodeids when calculating hash
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 34
diff changeset
134 return binaryData.clone();
858d1b2458cb Check integrity for bundle changelog. Sort nodeids when calculating hash
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 34
diff changeset
135 }
858d1b2458cb Check integrity for bundle changelog. Sort nodeids when calculating hash
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 34
diff changeset
136
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
137 /**
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
138 * Factory for {@link Nodeid Nodeids}.
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
139 * Primary difference with cons is handling of NULL id (this method returns constant) and control over array
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
140 * duplication - this method always makes a copy of an array passed
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
141 * @param binaryRepresentation - byte array of a length at least offset + 20
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
142 * @param offset - index in the array to start from
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
143 * @throws IllegalArgumentException when arguments don't select 20 bytes
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
144 */
34
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
145 public static Nodeid fromBinary(byte[] binaryRepresentation, int offset) {
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
146 if (binaryRepresentation == null || binaryRepresentation.length - offset < 20) {
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
147 throw new IllegalArgumentException();
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
148 }
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
149 int i = 0;
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
150 while (i < 20 && binaryRepresentation[offset+i] == 0) i++;
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
151 if (i == 20) {
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
152 return NULL;
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
153 }
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
154 if (offset == 0 && binaryRepresentation.length == 20) {
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
155 return new Nodeid(binaryRepresentation, true);
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
156 }
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
157 byte[] b = new byte[20]; // create new instance if no other reasonable guesses possible
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
158 System.arraycopy(binaryRepresentation, offset, b, 0, 20);
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
159 return new Nodeid(b, false);
51bc56c0addd Static Nodeid creation methods to reuse NULL id
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 31
diff changeset
160 }
31
346b66add79d Basic lookup for incoming changes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 28
diff changeset
161
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
162 /**
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
163 * Parse encoded representation.
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
164 *
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
165 * @param asciiRepresentation - encoded form of the Nodeid.
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
166 * @return object representation
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
167 * @throws IllegalArgumentException when argument doesn't match encoded form of 20-bytes sha1 digest.
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
168 */
78
c25c5c348d1b Skip metadata in the beginning of a file content. Parse metadata, recognize copies/renames
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
169 public static Nodeid fromAscii(String asciiRepresentation) {
c25c5c348d1b Skip metadata in the beginning of a file content. Parse metadata, recognize copies/renames
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
170 if (asciiRepresentation.length() != 40) {
c25c5c348d1b Skip metadata in the beginning of a file content. Parse metadata, recognize copies/renames
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
171 throw new IllegalArgumentException();
c25c5c348d1b Skip metadata in the beginning of a file content. Parse metadata, recognize copies/renames
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
172 }
c25c5c348d1b Skip metadata in the beginning of a file content. Parse metadata, recognize copies/renames
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
173 // XXX is better impl for String possible?
262
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 261
diff changeset
174 return fromAscii(asciiRepresentation.toCharArray(), 0, 40);
78
c25c5c348d1b Skip metadata in the beginning of a file content. Parse metadata, recognize copies/renames
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
175 }
261
436bb5f65ce1 Avoid redundant calls to library when converting a char to hex digit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 244
diff changeset
176
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
177 /**
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
178 * Parse encoded representation. Similar to {@link #fromAscii(String)}.
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 125
diff changeset
179 */
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
180 public static Nodeid fromAscii(byte[] asciiRepresentation, int offset, int length) {
24
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
181 if (length != 40) {
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
182 throw new IllegalArgumentException();
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
183 }
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
184 byte[] data = new byte[20];
266
0a2f445de774 Improve manifest parsing: reduce number of arrays instantiated for Nodeid
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 262
diff changeset
185 boolean zeroBytes = DigestHelper.ascii2bin(asciiRepresentation, offset, length, data);
31
346b66add79d Basic lookup for incoming changes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 28
diff changeset
186 if (zeroBytes) {
346b66add79d Basic lookup for incoming changes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 28
diff changeset
187 return NULL;
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
188 }
28
b2251b7a9823 Explicit cons arg for clone is more error-prone
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 24
diff changeset
189 return new Nodeid(data, false);
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
190 }
262
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 261
diff changeset
191
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 261
diff changeset
192 public static Nodeid fromAscii(char[] asciiRepresentation, int offset, int length) {
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 261
diff changeset
193 byte[] b = new byte[length];
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 261
diff changeset
194 for (int i = 0; i < b.length; i++) {
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 261
diff changeset
195 b[i] = (byte) asciiRepresentation[offset+i];
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 261
diff changeset
196 }
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 261
diff changeset
197 return fromAscii(b, 0, b.length);
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 261
diff changeset
198 }
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
199 }