| // 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 org.spearce.jgit.lib; |
| |
| import static com.google.gerrit.server.ioutil.BasicSerialization.readFixInt32; |
| import static com.google.gerrit.server.ioutil.BasicSerialization.readVarInt32; |
| import static com.google.gerrit.server.ioutil.BasicSerialization.writeFixInt32; |
| import static com.google.gerrit.server.ioutil.BasicSerialization.writeVarInt32; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| public class ObjectIdSerialization { |
| public static void writeCanBeNull(final OutputStream out, final AnyObjectId id) |
| throws IOException { |
| if (id != null) { |
| writeVarInt32(out, 1); |
| writeNotNull(out, id); |
| } else { |
| writeVarInt32(out, 0); |
| } |
| } |
| |
| public static void writeNotNull(final OutputStream out, final AnyObjectId id) |
| throws IOException { |
| writeFixInt32(out, id.w1); |
| writeFixInt32(out, id.w2); |
| writeFixInt32(out, id.w3); |
| writeFixInt32(out, id.w4); |
| writeFixInt32(out, id.w5); |
| } |
| |
| public static ObjectId readCanBeNull(final InputStream in) throws IOException { |
| switch (readVarInt32(in)) { |
| case 0: |
| return null; |
| case 1: |
| return readNotNull(in); |
| default: |
| throw new IOException("Invalid flag before ObjectId"); |
| } |
| } |
| |
| public static ObjectId readNotNull(final InputStream in) throws IOException { |
| final int w1 = readFixInt32(in); |
| final int w2 = readFixInt32(in); |
| final int w3 = readFixInt32(in); |
| final int w4 = readFixInt32(in); |
| final int w5 = readFixInt32(in); |
| return new ObjectId(w1, w2, w3, w4, w5); |
| } |
| |
| private ObjectIdSerialization() { |
| } |
| } |