/***** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common 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/cpl-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
*
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* 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"),
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package org.jruby.ext.ffi;
import java.nio.ByteOrder;
import java.util.HashMap;
import java.util.Map;
import org.jruby.Ruby;
import org.jruby.RubyModule;
/**
*
*/
public abstract class Platform {
public static final Platform getPlatform() {
return Factory.getInstance().getPlatform();
}
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";
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 final String getOperatingSystem() {
String osname = System.getProperty("os.name").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 final String getArchitecture() {
String arch = System.getProperty("os.arch").toLowerCase();
for (String s : ARCH_NAMES.keySet()) {
if (s.equalsIgnoreCase(arch)) {
return ARCH_NAMES.get(s);
}
}
return arch;
}
public static final String ARCH = getArchitecture();
public static final String OS = getOperatingSystem();
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 String LIBC = IS_WINDOWS ? "msvcrt" : IS_LINUX ? "libc.so.6" : "c";
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;
protected Platform() {
}
public void init(Ruby runtime, RubyModule ffi) {
RubyModule platform = ffi.defineModuleUnder("Platform");
platform.defineConstant("ADDRESS_SIZE", runtime.newFixnum(addressSize()));
platform.defineConstant("LONG_SIZE", runtime.newFixnum(longSize()));
platform.defineConstant("OS", runtime.newString(OS));
platform.defineConstant("ARCH", runtime.newString(ARCH));
platform.defineConstant("NAME", runtime.newString(NAME));
platform.defineConstant("IS_WINDOWS", runtime.newBoolean(IS_WINDOWS));
platform.defineConstant("IS_BSD", runtime.newBoolean(IS_BSD));
platform.defineConstant("IS_FREEBSD", runtime.newBoolean(IS_FREEBSD));
platform.defineConstant("IS_OPENBSD", runtime.newBoolean(IS_OPENBSD));
platform.defineConstant("IS_SOLARIS", runtime.newBoolean(IS_SOLARIS));
platform.defineConstant("IS_LINUX", runtime.newBoolean(IS_LINUX));
platform.defineConstant("IS_MAC", runtime.newBoolean(IS_MAC));
platform.defineConstant("LIBC", runtime.newString(LIBC));
platform.defineConstant("BYTE_ORDER", runtime.newFixnum(BYTE_ORDER));
platform.defineConstant("BIG_ENDIAN", runtime.newFixnum(BIG_ENDIAN));
platform.defineConstant("LITTLE_ENDIAN", runtime.newFixnum(LITTLE_ENDIAN));
}
/**
* 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;
}
}
public abstract int addressSize();
public abstract int longSize();
}