284 lines
11 KiB
Java
284 lines
11 KiB
Java
/*
|
|
* Copyright (c) 2012, 2019, 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.Serializable;
|
|
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 ZoneOffsetTransitionRule. */
|
|
static final byte ZOTRULE = 3;
|
|
|
|
/** The type being serialized. */
|
|
private byte type;
|
|
/** The object being serialized. */
|
|
private Serializable object;
|
|
|
|
/**
|
|
* Constructor for deserialization.
|
|
*/
|
|
public Ser() {
|
|
}
|
|
|
|
/**
|
|
* Creates an instance for serialization.
|
|
*
|
|
* @param type the type
|
|
* @param object the object
|
|
*/
|
|
Ser(byte type, Serializable 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="{@docRoot}/serialized-form.html#java.time.zone.ZoneRules">ZoneRules.writeReplace</a>
|
|
* <li><a href="{@docRoot}/serialized-form.html#java.time.zone.ZoneOffsetTransition">ZoneOffsetTransition.writeReplace</a>
|
|
* <li><a href="{@docRoot}/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="{@docRoot}/serialized-form.html#java.time.zone.ZoneRules">ZoneRules</a>
|
|
* - {@code ZoneRules.of(standardTransitions, standardOffsets, savingsInstantTransitions, wallOffsets, lastRules);}
|
|
* <li><a href="{@docRoot}/serialized-form.html#java.time.zone.ZoneOffsetTransition">ZoneOffsetTransition</a>
|
|
* - {@code ZoneOffsetTransition of(LocalDateTime.ofEpochSecond(epochSecond), offsetBefore, offsetAfter);}
|
|
* <li><a href="{@docRoot}/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 Serializable read(DataInput in) throws IOException, ClassNotFoundException {
|
|
byte type = in.readByte();
|
|
return readInternal(type, in);
|
|
}
|
|
|
|
private static Serializable 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;
|
|
}
|
|
}
|
|
|
|
}
|