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// Copyright (C) 2010 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.readVarInt32;
import static com.google.gerrit.server.ioutil.BasicSerialization.writeVarInt32;
import org.eclipse.jgit.diff.Edit;
import org.eclipse.jgit.diff.ReplaceEdit;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
public class IntraLineDiff implements Serializable {
static final long serialVersionUID = IntraLineDiffKey.serialVersionUID;
private transient List<Edit> edits;
IntraLineDiff(List<Edit> edits) {
this.edits = Collections.unmodifiableList(edits);
}
public List<Edit> getEdits() {
return edits;
}
private void writeObject(final ObjectOutputStream out) throws IOException {
writeVarInt32(out, edits.size());
for (Edit e : edits) {
writeEdit(out, e);
if (e instanceof ReplaceEdit) {
ReplaceEdit r = (ReplaceEdit) e;
writeVarInt32(out, r.getInternalEdits().size());
for (Edit i : r.getInternalEdits()) {
writeEdit(out, i);
}
} else {
writeVarInt32(out, 0);
}
}
}
private void readObject(final ObjectInputStream in) throws IOException {
int editCount = readVarInt32(in);
Edit[] editArray = new Edit[editCount];
for (int i = 0; i < editCount; i++) {
editArray[i] = readEdit(in);
int innerCount = readVarInt32(in);
if (0 < innerCount) {
Edit[] inner = new Edit[innerCount];
for (int j = 0; j < innerCount; j++) {
inner[j] = readEdit(in);
}
editArray[i] = new ReplaceEdit(editArray[i], toList(inner));
}
}
edits = toList(editArray);
}
private static void writeEdit(OutputStream out, Edit e) throws IOException {
writeVarInt32(out, e.getBeginA());
writeVarInt32(out, e.getEndA());
writeVarInt32(out, e.getBeginB());
writeVarInt32(out, e.getEndB());
}
private static Edit readEdit(InputStream in) throws IOException {
int beginA = readVarInt32(in);
int endA = readVarInt32(in);
int beginB = readVarInt32(in);
int endB = readVarInt32(in);
return new Edit(beginA, endA, beginB, endB);
}
private static List<Edit> toList(Edit[] l) {
return Collections.unmodifiableList(Arrays.asList(l));
}
}
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