| /* |
| * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * This file is available under and governed by the GNU General Public |
| * License version 2 only, as published by the Free Software Foundation. |
| * However, the following notice accompanied the original version of this |
| * file: |
| * |
| * Copyright (c) 2011-2012, Stephen Colebourne & Michael Nascimento Santos |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * * Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * |
| * * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * * Neither the name of JSR-310 nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| package java.time.zone; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.Externalizable; |
| import java.io.IOException; |
| import java.io.InvalidClassException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| import java.io.StreamCorruptedException; |
| import java.time.ZoneOffset; |
| |
| /** |
| * The shared serialization delegate for this package. |
| * |
| * @implNote |
| * This class is mutable and should be created once per serialization. |
| * |
| * @serial include |
| * @since 1.8 |
| */ |
| final class Ser implements Externalizable { |
| |
| /** |
| * Serialization version. |
| */ |
| private static final long serialVersionUID = -8885321777449118786L; |
| |
| /** Type for ZoneRules. */ |
| static final byte ZRULES = 1; |
| /** Type for ZoneOffsetTransition. */ |
| static final byte ZOT = 2; |
| /** Type for ZoneOffsetTransition. */ |
| static final byte ZOTRULE = 3; |
| |
| /** The type being serialized. */ |
| private byte type; |
| /** The object being serialized. */ |
| private Object object; |
| |
| /** |
| * Constructor for deserialization. |
| */ |
| public Ser() { |
| } |
| |
| /** |
| * Creates an instance for serialization. |
| * |
| * @param type the type |
| * @param object the object |
| */ |
| Ser(byte type, Object object) { |
| this.type = type; |
| this.object = object; |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Implements the {@code Externalizable} interface to write the object. |
| * @serialData |
| * Each serializable class is mapped to a type that is the first byte |
| * in the stream. Refer to each class {@code writeReplace} |
| * serialized form for the value of the type and sequence of values for the type. |
| * |
| * <ul> |
| * <li><a href="../../../serialized-form.html#java.time.zone.ZoneRules">ZoneRules.writeReplace</a> |
| * <li><a href="../../../serialized-form.html#java.time.zone.ZoneOffsetTransition">ZoneOffsetTransition.writeReplace</a> |
| * <li><a href="../../../serialized-form.html#java.time.zone.ZoneOffsetTransitionRule">ZoneOffsetTransitionRule.writeReplace</a> |
| * </ul> |
| * |
| * @param out the data stream to write to, not null |
| */ |
| @Override |
| public void writeExternal(ObjectOutput out) throws IOException { |
| writeInternal(type, object, out); |
| } |
| |
| static void write(Object object, DataOutput out) throws IOException { |
| writeInternal(ZRULES, object, out); |
| } |
| |
| private static void writeInternal(byte type, Object object, DataOutput out) throws IOException { |
| out.writeByte(type); |
| switch (type) { |
| case ZRULES: |
| ((ZoneRules) object).writeExternal(out); |
| break; |
| case ZOT: |
| ((ZoneOffsetTransition) object).writeExternal(out); |
| break; |
| case ZOTRULE: |
| ((ZoneOffsetTransitionRule) object).writeExternal(out); |
| break; |
| default: |
| throw new InvalidClassException("Unknown serialized type"); |
| } |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Implements the {@code Externalizable} interface to read the object. |
| * @serialData |
| * The streamed type and parameters defined by the type's {@code writeReplace} |
| * method are read and passed to the corresponding static factory for the type |
| * to create a new instance. That instance is returned as the de-serialized |
| * {@code Ser} object. |
| * |
| * <ul> |
| * <li><a href="../../../serialized-form.html#java.time.zone.ZoneRules">ZoneRules</a> |
| * - {@code ZoneRules.of(standardTransitions, standardOffsets, savingsInstantTransitions, wallOffsets, lastRules);} |
| * <li><a href="../../../serialized-form.html#java.time.zone.ZoneOffsetTransition">ZoneOffsetTransition</a> |
| * - {@code ZoneOffsetTransition of(LocalDateTime.ofEpochSecond(epochSecond), offsetBefore, offsetAfter);} |
| * <li><a href="../../../serialized-form.html#java.time.zone.ZoneOffsetTransitionRule">ZoneOffsetTransitionRule</a> |
| * - {@code ZoneOffsetTransitionRule.of(month, dom, dow, time, timeEndOfDay, timeDefinition, standardOffset, offsetBefore, offsetAfter);} |
| * </ul> |
| * @param in the data to read, not null |
| */ |
| @Override |
| public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { |
| type = in.readByte(); |
| object = readInternal(type, in); |
| } |
| |
| static Object read(DataInput in) throws IOException, ClassNotFoundException { |
| byte type = in.readByte(); |
| return readInternal(type, in); |
| } |
| |
| private static Object readInternal(byte type, DataInput in) throws IOException, ClassNotFoundException { |
| switch (type) { |
| case ZRULES: |
| return ZoneRules.readExternal(in); |
| case ZOT: |
| return ZoneOffsetTransition.readExternal(in); |
| case ZOTRULE: |
| return ZoneOffsetTransitionRule.readExternal(in); |
| default: |
| throw new StreamCorruptedException("Unknown serialized type"); |
| } |
| } |
| |
| /** |
| * Returns the object that will replace this one. |
| * |
| * @return the read object, should never be null |
| */ |
| private Object readResolve() { |
| return object; |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Writes the state to the stream. |
| * |
| * @param offset the offset, not null |
| * @param out the output stream, not null |
| * @throws IOException if an error occurs |
| */ |
| static void writeOffset(ZoneOffset offset, DataOutput out) throws IOException { |
| final int offsetSecs = offset.getTotalSeconds(); |
| int offsetByte = offsetSecs % 900 == 0 ? offsetSecs / 900 : 127; // compress to -72 to +72 |
| out.writeByte(offsetByte); |
| if (offsetByte == 127) { |
| out.writeInt(offsetSecs); |
| } |
| } |
| |
| /** |
| * Reads the state from the stream. |
| * |
| * @param in the input stream, not null |
| * @return the created object, not null |
| * @throws IOException if an error occurs |
| */ |
| static ZoneOffset readOffset(DataInput in) throws IOException { |
| int offsetByte = in.readByte(); |
| return (offsetByte == 127 ? ZoneOffset.ofTotalSeconds(in.readInt()) : ZoneOffset.ofTotalSeconds(offsetByte * 900)); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Writes the state to the stream. |
| * |
| * @param epochSec the epoch seconds, not null |
| * @param out the output stream, not null |
| * @throws IOException if an error occurs |
| */ |
| static void writeEpochSec(long epochSec, DataOutput out) throws IOException { |
| if (epochSec >= -4575744000L && epochSec < 10413792000L && epochSec % 900 == 0) { // quarter hours between 1825 and 2300 |
| int store = (int) ((epochSec + 4575744000L) / 900); |
| out.writeByte((store >>> 16) & 255); |
| out.writeByte((store >>> 8) & 255); |
| out.writeByte(store & 255); |
| } else { |
| out.writeByte(255); |
| out.writeLong(epochSec); |
| } |
| } |
| |
| /** |
| * Reads the state from the stream. |
| * |
| * @param in the input stream, not null |
| * @return the epoch seconds, not null |
| * @throws IOException if an error occurs |
| */ |
| static long readEpochSec(DataInput in) throws IOException { |
| int hiByte = in.readByte() & 255; |
| if (hiByte == 255) { |
| return in.readLong(); |
| } else { |
| int midByte = in.readByte() & 255; |
| int loByte = in.readByte() & 255; |
| long tot = ((hiByte << 16) + (midByte << 8) + loByte); |
| return (tot * 900) - 4575744000L; |
| } |
| } |
| |
| } |