Platform.java
/*
* Copyright (c) 2008, Harald Kuhr
* 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 the copyright holder 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 HOLDER 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 com.twelvemonkeys.lang;
import java.util.Properties;
/**
* Platform
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @author last modified by $Author: haku $
* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/lang/Platform.java#1 $
*/
public final class Platform {
/**
* Normalized operating system constant
*/
final OperatingSystem os;
/**
* Unnormalized operating system version constant (for completeness)
*/
final String version;
/**
* Normalized system architecture constant
*/
final Architecture architecture;
static final private Platform INSTANCE = new Platform();
private Platform() {
this(System.getProperties());
}
Platform(final Properties properties) {
os = normalizeOperatingSystem(properties.getProperty("os.name"));
version = properties.getProperty("os.version");
architecture = normalizeArchitecture(os, properties.getProperty("os.arch"));
}
static OperatingSystem normalizeOperatingSystem(final String osName) {
String os = osName;
if (os == null) {
throw new IllegalStateException("System property \"os.name\" == null");
}
os = os.toLowerCase();
if (os.startsWith("windows")) {
return OperatingSystem.Windows;
}
else if (os.startsWith("linux")) {
return OperatingSystem.Linux;
}
else if (os.startsWith("mac os") || os.startsWith("darwin")) {
return OperatingSystem.MacOS;
}
else if (os.startsWith("solaris") || os.startsWith("sunos")) {
return OperatingSystem.Solaris;
}
return OperatingSystem.Unknown;
}
static Architecture normalizeArchitecture(final OperatingSystem pOsName, final String osArch) {
String arch = osArch;
if (arch == null) {
throw new IllegalStateException("System property \"os.arch\" == null");
}
arch = arch.toLowerCase();
if (pOsName == OperatingSystem.Windows && (arch.startsWith("x86") || arch.startsWith("i386"))) {
return Architecture.X86;
// TODO: 64 bit
}
else if (pOsName == OperatingSystem.Linux) {
if (arch.startsWith("x86") || arch.startsWith("i386")) {
return Architecture.I386;
}
else if (arch.startsWith("i686")) {
return Architecture.I686;
}
else if (arch.startsWith("power") || arch.startsWith("ppc")) {
return Architecture.PPC;
}
// TODO: More Linux options?
// TODO: 64 bit
}
else if (pOsName == OperatingSystem.MacOS) {
if (arch.startsWith("power") || arch.startsWith("ppc")) {
return Architecture.PPC;
}
else if (arch.startsWith("x86")) {
return Architecture.X86;
}
else if (arch.startsWith("i386")) {
return Architecture.X86;
}
// TODO: 64 bit
}
else if (pOsName == OperatingSystem.Solaris) {
if (arch.startsWith("sparc")) {
return Architecture.SPARC;
}
if (arch.startsWith("x86")) {
// TODO: Should we use i386 as Linux and Mac does?
return Architecture.X86;
}
// TODO: 64 bit
}
return Architecture.Unknown;
}
/**
* Returns the current {@code Platform}.
* @return the current {@code Platform}.
*/
public static Platform get() {
return INSTANCE;
}
/**
* @return this platform's OS.
*/
public OperatingSystem getOS() {
return os;
}
/**
* @return this platform's OS version.
*/
public String getVersion() {
return version;
}
/**
* @return this platform's architecture.
*/
public Architecture getArchitecture() {
return architecture;
}
/**
* Shorthand for {@code Platform.get().getOS()}.
* @return the current {@code OperatingSystem}.
*/
public static OperatingSystem os() {
return INSTANCE.os;
}
/**
* Shorthand for {@code Platform.get().getVersion()}.
* @return the current OS version.
*/
public static String version() {
return INSTANCE.version;
}
/**
* Shorthand for {@code Platform.get().getArchitecture()}.
* @return the current {@code Architecture}.
*/
public static Architecture arch() {
return INSTANCE.architecture;
}
/**
* Enumeration of common System {@code Architecture}s.
* <p>
* For {@link #Unknown unknown architectures}, {@code toString()} will return
* the the same value as {@code System.getProperty("os.arch")}.
* </p>
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/lang/Platform.java#1 $
*/
public enum Architecture {
X86("x86"),
I386("i386"),
I686("i686"),
PPC("ppc"),
SPARC("sparc"),
Unknown(System.getProperty("os.arch"));
final String name;// for debug only
Architecture(String pName) {
name = pName;
}
public String toString() {
return name;
}
}
/**
* Enumeration of common {@code OperatingSystem}s.
* <p>
* For {@link #Unknown unknown operating systems}, {@code getName()} will return
* the the same value as {@code System.getProperty("os.name")}.
* </p>
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/lang/Platform.java#1 $
*/
public enum OperatingSystem {
Windows("Windows", "win"),
Linux("Linux", "lnx"),
Solaris("Solaris", "sun"),
MacOS("Mac OS", "osx"),
Unknown(System.getProperty("os.name"), null);
final String id;
final String name;// for debug only
OperatingSystem(String pName, String pId) {
name = pName;
id = pId != null ? pId : pName.toLowerCase();
}
public String getName() {
return name;
}
public String id() {
return id;
}
public String toString() {
return String.format("%s (%s)", id, name);
}
}
}