TimeZone.c

/*
 * Copyright (c) 1999, 2014, 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.
 */

#include<stdlib.h>
#include<string.h>

#include"jni.h"
#include"jni_util.h"
#include"jvm.h"
#include"TimeZone_md.h"

#include"java_util_TimeZone.h"

/*
 * Gets the platform defined TimeZone ID
 */
JNIEXPORTjstringJNICALL
Java_java_util_TimeZone_getSystemTimeZoneID(JNIEnv*env, jclassign,
jstringjava_home)
{
constchar*java_home_dir;
char*javaTZ;
jstringjstrJavaTZ=NULL;

CHECK_NULL_RETURN(java_home, NULL);

java_home_dir=JNU_GetStringPlatformChars(env, java_home, 0);
CHECK_NULL_RETURN(java_home_dir, NULL);

/*
 * Invoke platform dependent mapping function
 */
javaTZ=findJavaTZ_md(java_home_dir);
if (javaTZ!=NULL) {
jstrJavaTZ=JNU_NewStringPlatform(env, javaTZ);
free((void*)javaTZ);
 }

JNU_ReleaseStringPlatformChars(env, java_home, java_home_dir);
returnjstrJavaTZ;
}

/*
 * Gets a GMT offset-based time zone ID (e.g., "GMT-08:00")
 */
JNIEXPORTjstringJNICALL
Java_java_util_TimeZone_getSystemGMTOffsetID(JNIEnv*env, jclassign)
{
char*id=getGMTOffsetID();
jstringjstrID=NULL;

if (id!=NULL) {
jstrID=JNU_NewStringPlatform(env, id);
free((void*)id);
 }
returnjstrID;
}