1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
// Copyright (C) 2009 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.server.patch;
import static com.google.gerrit.server.ioutil.BasicSerialization.readBytes;
import static com.google.gerrit.server.ioutil.BasicSerialization.readVarInt32;
import static com.google.gerrit.server.ioutil.BasicSerialization.writeBytes;
import static com.google.gerrit.server.ioutil.BasicSerialization.writeVarInt32;
import static org.eclipse.jgit.lib.ObjectIdSerializer.read;
import static org.eclipse.jgit.lib.ObjectIdSerializer.readWithoutMarker;
import static org.eclipse.jgit.lib.ObjectIdSerializer.write;
import static org.eclipse.jgit.lib.ObjectIdSerializer.writeWithoutMarker;
import com.google.common.annotations.VisibleForTesting;
import com.google.gerrit.common.Nullable;
import com.google.gerrit.reviewdb.client.Patch;
import com.google.gerrit.reviewdb.client.PatchSet;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.zip.DeflaterOutputStream;
import java.util.zip.InflaterInputStream;
import org.eclipse.jgit.lib.AnyObjectId;
import org.eclipse.jgit.lib.ObjectId;
public class PatchList implements Serializable {
private static final long serialVersionUID = PatchListKey.serialVersionUID;
private static final Comparator<PatchListEntry> PATCH_CMP =
Comparator.comparing(PatchListEntry::getNewName, PatchList::comparePaths);
@VisibleForTesting
static int comparePaths(String a, String b) {
int m1 = Patch.isMagic(a) ? (a.equals(Patch.MERGE_LIST) ? 2 : 1) : 3;
int m2 = Patch.isMagic(b) ? (b.equals(Patch.MERGE_LIST) ? 2 : 1) : 3;
if (m1 != m2) {
return m1 - m2;
} else if (m1 < 3) {
return 0;
}
// m1 == m2 == 3: normal names.
return a.compareTo(b);
}
@Nullable private transient ObjectId oldId;
private transient ObjectId newId;
private transient boolean isMerge;
private transient ComparisonType comparisonType;
private transient int insertions;
private transient int deletions;
private transient PatchListEntry[] patches;
public PatchList(
@Nullable AnyObjectId oldId,
AnyObjectId newId,
boolean isMerge,
ComparisonType comparisonType,
PatchListEntry[] patches) {
this.oldId = oldId != null ? oldId.copy() : null;
this.newId = newId.copy();
this.isMerge = isMerge;
this.comparisonType = comparisonType;
Arrays.sort(patches, 0, patches.length, PATCH_CMP);
// Skip magic files
int i = 0;
for (; i < patches.length; i++) {
if (!Patch.isMagic(patches[i].getNewName())) {
break;
}
}
for (; i < patches.length; i++) {
insertions += patches[i].getInsertions();
deletions += patches[i].getDeletions();
}
this.patches = patches;
}
/** Old side tree or commit; null only if this is a combined diff. */
@Nullable
public ObjectId getOldId() {
return oldId;
}
/** New side commit. */
public ObjectId getNewId() {
return newId;
}
/** Get a sorted, unmodifiable list of all files in this list. */
public List<PatchListEntry> getPatches() {
return Collections.unmodifiableList(Arrays.asList(patches));
}
/** @return the comparison type */
public ComparisonType getComparisonType() {
return comparisonType;
}
/** @return total number of new lines added. */
public int getInsertions() {
return insertions;
}
/** @return total number of lines removed. */
public int getDeletions() {
return deletions;
}
/**
* Get a sorted, modifiable list of all files in this list.
*
* <p>The returned list items do not populate:
*
* <ul>
* <li>{@link Patch#getCommentCount()}
* <li>{@link Patch#getDraftCount()}
* <li>{@link Patch#isReviewedByCurrentUser()}
* </ul>
*
* @param setId the patch set identity these patches belong to. This really should not need to be
* specified, but is a current legacy artifact of how the cache is keyed versus how the
* database is keyed.
*/
public List<Patch> toPatchList(PatchSet.Id setId) {
final ArrayList<Patch> r = new ArrayList<>(patches.length);
for (PatchListEntry e : patches) {
r.add(e.toPatch(setId));
}
return r;
}
/** Find an entry by name, returning an empty entry if not present. */
public PatchListEntry get(String fileName) {
final int index = search(fileName);
return 0 <= index ? patches[index] : PatchListEntry.empty(fileName);
}
private int search(String fileName) {
PatchListEntry want = PatchListEntry.empty(fileName);
return Arrays.binarySearch(patches, 0, patches.length, want, PATCH_CMP);
}
private void writeObject(ObjectOutputStream output) throws IOException {
final ByteArrayOutputStream buf = new ByteArrayOutputStream();
try (DeflaterOutputStream out = new DeflaterOutputStream(buf)) {
write(out, oldId);
writeWithoutMarker(out, newId);
writeVarInt32(out, isMerge ? 1 : 0);
comparisonType.writeTo(out);
writeVarInt32(out, insertions);
writeVarInt32(out, deletions);
writeVarInt32(out, patches.length);
for (PatchListEntry p : patches) {
p.writeTo(out);
}
}
writeBytes(output, buf.toByteArray());
}
private void readObject(ObjectInputStream input) throws IOException {
final ByteArrayInputStream buf = new ByteArrayInputStream(readBytes(input));
try (InflaterInputStream in = new InflaterInputStream(buf)) {
oldId = read(in);
newId = readWithoutMarker(in);
isMerge = readVarInt32(in) != 0;
comparisonType = ComparisonType.readFrom(in);
insertions = readVarInt32(in);
deletions = readVarInt32(in);
final int cnt = readVarInt32(in);
final PatchListEntry[] all = new PatchListEntry[cnt];
for (int i = 0; i < all.length; i++) {
all[i] = PatchListEntry.readFrom(in);
}
patches = all;
}
}
}
|
