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/***** BEGIN LICENSE BLOCK *****
* Version: EPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Eclipse Public
* License Version 1.0 (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.eclipse.org/legal/epl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2008 JRuby project
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the EPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the EPL, the GPL or the LGPL.
***** END LICENSE BLOCK *****/
package org.jruby.platform;
import org.jruby.util.SafePropertyAccessor;
import java.nio.ByteOrder;
import java.util.HashMap;
import java.util.Map;
/**
* Platform specific constants.
*/
public class Platform {
private static final Platform INSTANCE = new Platform();
public static Platform getPlatform() {
return INSTANCE;
}
protected Platform() {
}
public static void main(String[] args) {
System.out.println(System.getProperties());
}
public String getPackageName() {
return String.format("%s.%s.%s", Platform.class.getPackage().getName(), OS, ARCH);
}
public String getOSPackageName() {
return String.format("%s.%s", Platform.class.getPackage().getName(), OS);
}
private static final String DARWIN = "darwin";
private static final String WINDOWS = "windows";
private static final String LINUX = "linux";
private static final String FREEBSD = "freebsd";
private static final String OPENBSD = "openbsd";
private static final String SOLARIS = "solaris";
private static final String OPENVMS = "openvms";
private static final String GCJ = "GNU libgcj";
private static final String IBM = "IBM J9 VM";
public static final Map<String, String> OS_NAMES = new HashMap<String, String>() {{
put("Mac OS X", DARWIN);
}};
public static final Map<String, String> ARCH_NAMES = new HashMap<String, String>() {{
put("x86", "i386");
}};
private static String initOperatingSystem() {
String osname = getProperty("os.name", "unknown").toLowerCase();
for (String s : OS_NAMES.keySet()) {
if (s.equalsIgnoreCase(osname)) {
return OS_NAMES.get(s);
}
}
if (osname.startsWith("windows")) {
return WINDOWS;
}
return osname;
}
private static String initArchitecture() {
String arch = getProperty("os.arch", "unknown").toLowerCase();
for (String s : ARCH_NAMES.keySet()) {
if (s.equalsIgnoreCase(arch)) {
return ARCH_NAMES.get(s);
}
}
if ("universal".equals(arch)) {
// OS X OpenJDK7 builds report "universal" right now
String bits = SafePropertyAccessor.getProperty("sun.arch.data.model");
if ("32".equals(bits)) {
System.setProperty("os.arch", "i386");
arch = "i386";
} else if ("64".equals(bits)) {
System.setProperty("os.arch", "x86_64");
arch = "x86_64";
}
}
return arch;
}
public static final String ARCH = initArchitecture();
public static final String OS = initOperatingSystem();
public static final String JVM = getProperty("java.vm.name", "unknown");
public static final boolean IS_WINDOWS = OS.equals(WINDOWS);
public static final boolean IS_MAC = OS.equals(DARWIN);
public static final boolean IS_FREEBSD = OS.equals(FREEBSD);
public static final boolean IS_OPENBSD = OS.equals(OPENBSD);
public static final boolean IS_LINUX = OS.equals(LINUX);
public static final boolean IS_SOLARIS = OS.equals(SOLARIS);
public static final boolean IS_BSD = IS_MAC || IS_FREEBSD || IS_OPENBSD;
public static final boolean IS_OPENVMS = OS.equals(OPENVMS);
public static final String NAME = String.format("%s-%s", ARCH, OS);
public static final int BIG_ENDIAN = 4321;
public static final int LITTLE_ENDIAN = 1234;
public static final int BYTE_ORDER = ByteOrder.nativeOrder().equals(ByteOrder.BIG_ENDIAN) ? BIG_ENDIAN : LITTLE_ENDIAN;
public static final boolean IS_GCJ = JVM.equals(GCJ);
public static final boolean IS_IBM = JVM.equals(IBM);
/**
* An extension over <code>System.getProperty</code> method.
* Handles security restrictions, and returns the default
* value if the access to the property is restricted.
* @param property The system property name.
* @param defValue The default value.
* @return The value of the system property,
* or the default value.
*/
public static String getProperty(String property, String defValue) {
try {
return System.getProperty(property, defValue);
} catch (SecurityException se) {
return defValue;
}
}
}