/*
* This file is part of the Illarion project.
*
* Copyright © 2014 - Illarion e.V.
*
* Illarion is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Illarion 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 for more details.
*/
package illarion.download.launcher;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.annotation.Nonnull;
/**
* This small utility class is used to detect the operating system and the architecture of the current system and
* offer that information to the rest of the application.
*
* @author Martin Karing
*/
public final class OSDetection {
/**
* The internal constant for 32bit machines.
*/
private static final int BIT32 = 0;
/**
* The internal constant for 64bit machines.
*/
private static final int BIT64 = 1;
/**
* The singleton instance of this class.
*/
private static final OSDetection INSTANCE = new OSDetection();
/**
* The internal constant for the operating system "Linux".
*/
private static final int LINUX = 1;
/**
* The internal constant for the operating system "MacOS X".
*/
private static final int MACOSX = 2;
/**
* The internal constant for the operating system "Sun OS".
*/
private static final int SOLARIS = 3;
/**
* The internal constant for a unknown value.
*/
private static final int UNKNOWN = -1;
/**
* The internal constant for the operating system "Windows".
*/
private static final int WINDOWS = 0;
/**
* This value stores the architecture.
*/
private final int arch;
/**
* This value stores the operating system.
*/
private final int os;
/**
* The logger instance that takes care for the logger output of this class.
*/
private static final Logger LOGGER = LoggerFactory.getLogger(OSDetection.class);
/**
* The private constructor that generates the required values.
*/
private OSDetection() {
String osName = System.getProperty("os.name"); //$NON-NLS-1$
if (osName.contains("Windows")) { //$NON-NLS-1$
os = WINDOWS;
} else if (osName.contains("Linux")) { //$NON-NLS-1$
os = LINUX;
} else if (osName.contains("SunOS")) { //$NON-NLS-1$
os = SOLARIS;
} else if (osName.contains("Mac OS X")) { //$NON-NLS-1$
os = MACOSX;
} else {
LOGGER.error("OS-Detection failed for: {}", osName);
os = UNKNOWN;
}
String archName = System.getProperty("os.arch"); //$NON-NLS-1$
if (archName.contains("amd64") || archName.contains("x86_64")) { //$NON-NLS-1$
arch = BIT64;
} else if (archName.contains("i386") || archName.contains("i586") || archName.contains("i686") ||
archName.contains("x86")) { //$NON-NLS-1$
arch = BIT32;
} else {
LOGGER.error("Architecture-Detection failed for: {}", archName);
arch = UNKNOWN;
}
}
/**
* Get the string identifier of the architecture of the host system.
*
* @return the string identifier of the architecture
*/
@Nonnull
public static String getArchValue() {
switch (INSTANCE.arch) {
case BIT32:
return "i586"; //$NON-NLS-1$
case BIT64:
return "amd64"; //$NON-NLS-1$
default:
return "generic"; //$NON-NLS-1$
}
}
/**
* Get a string identifier of the operating system.
*
* @return the OS identifier of the operating system
*/
@Nonnull
public static String getOsValue() {
switch (INSTANCE.os) {
case WINDOWS:
return "windows"; //$NON-NLS-1$
case LINUX:
return "linux"; //$NON-NLS-1$
case MACOSX:
return "macosx"; //$NON-NLS-1$
case SOLARIS:
return "solaris"; //$NON-NLS-1$
default:
return "generic"; //$NON-NLS-1$
}
}
/**
* Check if this operating system is a 32bit system.
*
* @return {@code true} in case the operating system is a 32bit system
*/
public static boolean is32Bit() {
return INSTANCE.arch == BIT32;
}
/**
* Check if this operating system is a 64bit system.
*
* @return {@code true} in case the operating system is a 64bit system
*/
public static boolean is64Bit() {
return INSTANCE.arch == BIT64;
}
/**
* Check if the architecture is unknown.
*
* @return {@code true} in case the architecture is unknown
*/
public static boolean isArchUnknown() {
return INSTANCE.arch == UNKNOWN;
}
/**
* Check if this operating system is "Linux".
*
* @return {@code true} in case the operating system is "Linux"
*/
public static boolean isLinux() {
return INSTANCE.os == LINUX;
}
/**
* Check if this operating system is "MacOS X".
*
* @return {@code true} in case the operating system is "MacOS X"
*/
public static boolean isMacOSX() {
return INSTANCE.os == MACOSX;
}
/**
* Check if the operating system is unknown.
*
* @return {@code true} in case the operating system is unknown
*/
public static boolean isOsUnknown() {
return INSTANCE.os == UNKNOWN;
}
/**
* Check if this operating system is "Sun OS".
*
* @return {@code true} in case the operating system is "Sun OS"
*/
public static boolean isSolaris() {
return INSTANCE.os == SOLARIS;
}
/**
* Check if this operating system is "Windows".
*
* @return {@code true} in case the operating system is "Windows"
*/
public static boolean isWindows() {
return INSTANCE.os == WINDOWS;
}
}