299 lines
12 KiB
Java
299 lines
12 KiB
Java
|
/*
|
||
|
|
* 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) 2009-2012, 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.ByteArrayInputStream;
|
||
|
|
import java.io.DataInputStream;
|
||
|
|
import java.io.File;
|
||
|
|
import java.io.IOException;
|
||
|
|
import java.io.StreamCorruptedException;
|
||
|
|
import java.nio.file.FileSystems;
|
||
|
|
import java.security.AccessController;
|
||
|
|
import java.security.PrivilegedExceptionAction;
|
||
|
|
import java.time.DateTimeException;
|
||
|
|
import java.util.Arrays;
|
||
|
|
import java.util.HashSet;
|
||
|
|
import java.util.NavigableMap;
|
||
|
|
import java.util.Objects;
|
||
|
|
import java.util.Set;
|
||
|
|
import java.util.TreeMap;
|
||
|
|
import java.util.concurrent.ConcurrentNavigableMap;
|
||
|
|
import java.util.concurrent.ConcurrentSkipListMap;
|
||
|
|
import java.util.concurrent.CopyOnWriteArraySet;
|
||
|
|
import java.util.concurrent.atomic.AtomicReferenceArray;
|
||
|
|
import java.util.zip.ZipFile;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Loads time-zone rules for 'TZDB'.
|
||
|
|
* <p>
|
||
|
|
* This class is public for the service loader to access.
|
||
|
|
*
|
||
|
|
* <h3>Specification for implementors</h3>
|
||
|
|
* This class is immutable and thread-safe.
|
||
|
|
*
|
||
|
|
* @since 1.8
|
||
|
|
*/
|
||
|
|
final class TzdbZoneRulesProvider extends ZoneRulesProvider {
|
||
|
|
// service loader seems to need it to be public
|
||
|
|
|
||
|
|
/**
|
||
|
|
* All the regions that are available.
|
||
|
|
*/
|
||
|
|
private final Set<String> regionIds = new CopyOnWriteArraySet<>();
|
||
|
|
/**
|
||
|
|
* All the versions that are available.
|
||
|
|
*/
|
||
|
|
private final ConcurrentNavigableMap<String, Version> versions = new ConcurrentSkipListMap<>();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates an instance.
|
||
|
|
* Created by the {@code ServiceLoader}.
|
||
|
|
*
|
||
|
|
* @throws ZoneRulesException if unable to load
|
||
|
|
*/
|
||
|
|
public TzdbZoneRulesProvider() {
|
||
|
|
super();
|
||
|
|
if (load(ClassLoader.getSystemClassLoader()) == false) {
|
||
|
|
throw new ZoneRulesException("No time-zone rules found for 'TZDB'");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------
|
||
|
|
@Override
|
||
|
|
protected Set<String> provideZoneIds() {
|
||
|
|
return new HashSet<>(regionIds);
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
protected ZoneRules provideRules(String zoneId) {
|
||
|
|
Objects.requireNonNull(zoneId, "zoneId");
|
||
|
|
ZoneRules rules = versions.lastEntry().getValue().getRules(zoneId);
|
||
|
|
if (rules == null) {
|
||
|
|
throw new ZoneRulesException("Unknown time-zone ID: " + zoneId);
|
||
|
|
}
|
||
|
|
return rules;
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
protected NavigableMap<String, ZoneRules> provideVersions(String zoneId) {
|
||
|
|
TreeMap<String, ZoneRules> map = new TreeMap<>();
|
||
|
|
for (Version version : versions.values()) {
|
||
|
|
ZoneRules rules = version.getRules(zoneId);
|
||
|
|
if (rules != null) {
|
||
|
|
map.put(version.versionId, rules);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return map;
|
||
|
|
}
|
||
|
|
|
||
|
|
//-------------------------------------------------------------------------
|
||
|
|
/**
|
||
|
|
* Loads the rules.
|
||
|
|
*
|
||
|
|
* @param classLoader the class loader to use, not null
|
||
|
|
* @return true if updated
|
||
|
|
* @throws ZoneRulesException if unable to load
|
||
|
|
*/
|
||
|
|
private boolean load(ClassLoader classLoader) {
|
||
|
|
Object updated = Boolean.FALSE;
|
||
|
|
try {
|
||
|
|
updated = AccessController.doPrivileged(new PrivilegedExceptionAction() {
|
||
|
|
public Object run() throws IOException, ClassNotFoundException {
|
||
|
|
File tzdbJar = null;
|
||
|
|
// TBD: workaround for now, so test/java/time tests can be
|
||
|
|
// run against Java runtime that does not have tzdb
|
||
|
|
String tzdbProp = System.getProperty("java.time.zone.tzdbjar");
|
||
|
|
if (tzdbProp != null) {
|
||
|
|
tzdbJar = new File(tzdbProp);
|
||
|
|
} else {
|
||
|
|
String libDir = System.getProperty("java.home") + File.separator + "lib";
|
||
|
|
try {
|
||
|
|
libDir = FileSystems.getDefault().getPath(libDir).toRealPath().toString();
|
||
|
|
} catch(Exception e) {}
|
||
|
|
tzdbJar = new File(libDir, "tzdb.jar");
|
||
|
|
}
|
||
|
|
try (ZipFile zf = new ZipFile(tzdbJar);
|
||
|
|
DataInputStream dis = new DataInputStream(
|
||
|
|
zf.getInputStream(zf.getEntry("TZDB.dat")))) {
|
||
|
|
Iterable<Version> loadedVersions = load(dis);
|
||
|
|
for (Version loadedVersion : loadedVersions) {
|
||
|
|
if (versions.putIfAbsent(loadedVersion.versionId, loadedVersion) != null) {
|
||
|
|
throw new DateTimeException(
|
||
|
|
"Data already loaded for TZDB time-zone rules version: " +
|
||
|
|
loadedVersion.versionId);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return Boolean.TRUE;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
} catch (Exception ex) {
|
||
|
|
throw new ZoneRulesException("Unable to load TZDB time-zone rules", ex);
|
||
|
|
}
|
||
|
|
return updated == Boolean.TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Loads the rules from a DateInputStream, often in a jar file.
|
||
|
|
*
|
||
|
|
* @param dis the DateInputStream to load, not null
|
||
|
|
* @throws Exception if an error occurs
|
||
|
|
*/
|
||
|
|
private Iterable<Version> load(DataInputStream dis) throws ClassNotFoundException, IOException {
|
||
|
|
if (dis.readByte() != 1) {
|
||
|
|
throw new StreamCorruptedException("File format not recognised");
|
||
|
|
}
|
||
|
|
// group
|
||
|
|
String groupId = dis.readUTF();
|
||
|
|
if ("TZDB".equals(groupId) == false) {
|
||
|
|
throw new StreamCorruptedException("File format not recognised");
|
||
|
|
}
|
||
|
|
// versions
|
||
|
|
int versionCount = dis.readShort();
|
||
|
|
String[] versionArray = new String[versionCount];
|
||
|
|
for (int i = 0; i < versionCount; i++) {
|
||
|
|
versionArray[i] = dis.readUTF();
|
||
|
|
}
|
||
|
|
// regions
|
||
|
|
int regionCount = dis.readShort();
|
||
|
|
String[] regionArray = new String[regionCount];
|
||
|
|
for (int i = 0; i < regionCount; i++) {
|
||
|
|
regionArray[i] = dis.readUTF();
|
||
|
|
}
|
||
|
|
regionIds.addAll(Arrays.asList(regionArray));
|
||
|
|
// rules
|
||
|
|
int ruleCount = dis.readShort();
|
||
|
|
Object[] ruleArray = new Object[ruleCount];
|
||
|
|
for (int i = 0; i < ruleCount; i++) {
|
||
|
|
byte[] bytes = new byte[dis.readShort()];
|
||
|
|
dis.readFully(bytes);
|
||
|
|
ruleArray[i] = bytes;
|
||
|
|
}
|
||
|
|
AtomicReferenceArray<Object> ruleData = new AtomicReferenceArray<>(ruleArray);
|
||
|
|
// link version-region-rules
|
||
|
|
Set<Version> versionSet = new HashSet<Version>(versionCount);
|
||
|
|
for (int i = 0; i < versionCount; i++) {
|
||
|
|
int versionRegionCount = dis.readShort();
|
||
|
|
String[] versionRegionArray = new String[versionRegionCount];
|
||
|
|
short[] versionRulesArray = new short[versionRegionCount];
|
||
|
|
for (int j = 0; j < versionRegionCount; j++) {
|
||
|
|
versionRegionArray[j] = regionArray[dis.readShort()];
|
||
|
|
versionRulesArray[j] = dis.readShort();
|
||
|
|
}
|
||
|
|
versionSet.add(new Version(versionArray[i], versionRegionArray, versionRulesArray, ruleData));
|
||
|
|
}
|
||
|
|
return versionSet;
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public String toString() {
|
||
|
|
return "TZDB";
|
||
|
|
}
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------
|
||
|
|
/**
|
||
|
|
* A version of the TZDB rules.
|
||
|
|
*/
|
||
|
|
static class Version {
|
||
|
|
private final String versionId;
|
||
|
|
private final String[] regionArray;
|
||
|
|
private final short[] ruleIndices;
|
||
|
|
private final AtomicReferenceArray<Object> ruleData;
|
||
|
|
|
||
|
|
Version(String versionId, String[] regionIds, short[] ruleIndices, AtomicReferenceArray<Object> ruleData) {
|
||
|
|
this.ruleData = ruleData;
|
||
|
|
this.versionId = versionId;
|
||
|
|
this.regionArray = regionIds;
|
||
|
|
this.ruleIndices = ruleIndices;
|
||
|
|
}
|
||
|
|
|
||
|
|
ZoneRules getRules(String regionId) {
|
||
|
|
int regionIndex = Arrays.binarySearch(regionArray, regionId);
|
||
|
|
if (regionIndex < 0) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
try {
|
||
|
|
return createRule(ruleIndices[regionIndex]);
|
||
|
|
} catch (Exception ex) {
|
||
|
|
throw new ZoneRulesException("Invalid binary time-zone data: TZDB:" + regionId + ", version: " + versionId, ex);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
ZoneRules createRule(short index) throws Exception {
|
||
|
|
Object obj = ruleData.get(index);
|
||
|
|
if (obj instanceof byte[]) {
|
||
|
|
byte[] bytes = (byte[]) obj;
|
||
|
|
DataInputStream dis = new DataInputStream(new ByteArrayInputStream(bytes));
|
||
|
|
obj = Ser.read(dis);
|
||
|
|
ruleData.set(index, obj);
|
||
|
|
}
|
||
|
|
return (ZoneRules) obj;
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public String toString() {
|
||
|
|
return versionId;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|