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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.vfs2.util;
import java.io.File;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;
import java.util.Set;
/**
* Class to help determining the OS.
*/
public final class Os {
/**
* All Windows based OSes.
*/
public static final OsFamily OS_FAMILY_WINDOWS = new OsFamily("windows");
/**
* All DOS based OSes.
*/
public static final OsFamily OS_FAMILY_DOS = new OsFamily("dos");
/**
* All Windows NT based OSes.
*/
public static final OsFamily OS_FAMILY_WINNT = new OsFamily("nt", new OsFamily[] { OS_FAMILY_WINDOWS });
/**
* All Windows 9x based OSes.
*/
public static final OsFamily OS_FAMILY_WIN9X = new OsFamily("win9x",
new OsFamily[] { OS_FAMILY_WINDOWS, OS_FAMILY_DOS });
/**
* OS/2.
*/
public static final OsFamily OS_FAMILY_OS2 = new OsFamily("os/2", new OsFamily[] { OS_FAMILY_DOS });
/**
* Netware.
*/
public static final OsFamily OS_FAMILY_NETWARE = new OsFamily("netware");
/**
* All UNIX based OSes.
*/
public static final OsFamily OS_FAMILY_UNIX = new OsFamily("unix");
/**
* All Mac based OSes.
*/
public static final OsFamily OS_FAMILY_MAC = new OsFamily("mac");
/**
* OSX.
*/
public static final OsFamily OS_FAMILY_OSX = new OsFamily("osx", new OsFamily[] { OS_FAMILY_UNIX, OS_FAMILY_MAC });
private static final String OS_NAME = System.getProperty("os.name").toLowerCase(Locale.US);
private static final String OS_ARCH = System.getProperty("os.arch").toLowerCase(Locale.US);
private static final String OS_VERSION = System.getProperty("os.version").toLowerCase(Locale.US);
private static final String PATH_SEP = File.pathSeparator;
private static final OsFamily OS_FAMILY;
private static final OsFamily[] OS_ALL_FAMILIES;
private static final OsFamily[] ALL_FAMILIES = new OsFamily[] { OS_FAMILY_DOS, OS_FAMILY_MAC, OS_FAMILY_NETWARE,
OS_FAMILY_OS2, OS_FAMILY_OSX, OS_FAMILY_UNIX, OS_FAMILY_WINDOWS, OS_FAMILY_WINNT, OS_FAMILY_WIN9X };
static {
OS_FAMILY = determineOsFamily();
OS_ALL_FAMILIES = determineAllFamilies();
}
/**
* Private constructor to block instantiation.
*/
private Os() {
}
/**
* Determines if the OS on which Ant is executing matches the given OS version.
*
* @param version The version to check.
* @return true if the version matches.
*/
public static boolean isVersion(final String version) {
return isOs((OsFamily) null, null, null, version);
}
/**
* Determines if the OS on which Ant is executing matches the given OS architecture.
*
* @param arch The architecture to check.
* @return true if the architecture mataches.
*/
public static boolean isArch(final String arch) {
return isOs((OsFamily) null, null, arch, null);
}
/**
* Determines if the OS on which Ant is executing matches the given OS family.
*
* @param family The family to check.
* @return true if the family matches.
*/
public static boolean isFamily(final String family) {
return isOs(family, null, null, null);
}
/**
* Determines if the OS on which Ant is executing matches the given OS family.
*
* @param family The family to check.
* @return true if the family matches.
*/
public static boolean isFamily(final OsFamily family) {
return isOs(family, null, null, null);
}
/**
* Determines if the OS on which Ant is executing matches the given OS name.
*
* @param name Description of Parameter
* @return The Name value
* @since 1.7
*/
public static boolean isName(final String name) {
return isOs((OsFamily) null, name, null, null);
}
/**
* Determines if the OS on which Ant is executing matches the given OS family, name, architecture and version.
*
* @param family The OS family
* @param name The OS name
* @param arch The OS architecture
* @param version The OS version
* @return The Os value
*/
public static boolean isOs(final String family, final String name, final String arch, final String version) {
return isOs(getFamily(family), name, arch, version);
}
/**
* Determines if the OS on which Ant is executing matches the given OS family, name, architecture and version.
*
* @param family The OS family
* @param name The OS name
* @param arch The OS architecture
* @param version The OS version
* @return The Os value
*/
public static boolean isOs(final OsFamily family, final String name, final String arch, final String version) {
if (family != null || name != null || arch != null || version != null) {
final boolean isFamily = familyMatches(family);
final boolean isName = nameMatches(name);
final boolean isArch = archMatches(arch);
final boolean isVersion = versionMatches(version);
return isFamily && isName && isArch && isVersion;
}
return false;
}
/**
* Locates an OsFamily by name (case-insensitive).
*
* @param name The family name to lookup.
* @return the OS family, or null if not found.
*/
public static OsFamily getFamily(final String name) {
for (final OsFamily osFamily : ALL_FAMILIES) {
if (osFamily.getName().equalsIgnoreCase(name)) {
return osFamily;
}
}
return null;
}
private static boolean versionMatches(final String version) {
boolean isVersion = true;
if (version != null) {
isVersion = version.equalsIgnoreCase(OS_VERSION);
}
return isVersion;
}
private static boolean archMatches(final String arch) {
boolean isArch = true;
if (arch != null) {
isArch = arch.equalsIgnoreCase(OS_ARCH);
}
return isArch;
}
private static boolean nameMatches(final String name) {
boolean isName = true;
if (name != null) {
isName = name.equalsIgnoreCase(OS_NAME);
}
return isName;
}
private static boolean familyMatches(final OsFamily family) {
if (family == null) {
return false;
}
for (final OsFamily osFamily : OS_ALL_FAMILIES) {
if (family == osFamily) {
return true;
}
}
return false;
}
private static OsFamily[] determineAllFamilies() {
// Determine all families the current OS belongs to
final Set allFamilies = new HashSet<>();
if (OS_FAMILY != null) {
final List queue = new ArrayList<>();
queue.add(OS_FAMILY);
while (queue.size() > 0) {
final OsFamily family = queue.remove(0);
allFamilies.add(family);
final OsFamily[] families = family.getFamilies();
for (final OsFamily parent : families) {
queue.add(parent);
}
}
}
return allFamilies.toArray(new OsFamily[allFamilies.size()]);
}
private static OsFamily determineOsFamily() {
// Determine the most specific OS family
if (OS_NAME.indexOf("windows") > -1) {
if (OS_NAME.indexOf("xp") > -1 || OS_NAME.indexOf("2000") > -1 || OS_NAME.indexOf("nt") > -1) {
return OS_FAMILY_WINNT;
}
return OS_FAMILY_WIN9X;
} else if (OS_NAME.indexOf("os/2") > -1) {
return OS_FAMILY_OS2;
} else if (OS_NAME.indexOf("netware") > -1) {
return OS_FAMILY_NETWARE;
} else if (OS_NAME.indexOf("mac") > -1) {
if (OS_NAME.endsWith("x")) {
return OS_FAMILY_OSX;
}
return OS_FAMILY_MAC;
} else if (PATH_SEP.equals(":")) {
return OS_FAMILY_UNIX;
} else {
return null;
}
}
}
