/*
* Copyright (c) 2012, the Dart project authors.
*
* Licensed under the Eclipse Public License v1.0 (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
*
* 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 com.google.dart.engine.utilities.os;
/**
* The class {@code OSUtilities} implements utility methods used to determine which operating system
* we are running on.
*
* @coverage dart.engine.utilities
*/
public final class OSUtilities {
/**
* The line separator used by the current platform.
*/
public static final String LINE_SEPARATOR = System.getProperty("line.separator"); //$NON-NLS-1$
/**
* The prefix common to all OS names that indicate that we are running on a Macintosh OS.
*/
private static final String OS_PREFIX_MAC = "mac"; //$NON-NLS-1$
/**
* The prefix common to all OS names that indicate that we are running on a Windows OS.
*/
private static final String OS_PREFIX_WIN = "win"; //$NON-NLS-1$
/**
* The name of the {@link System} property whose value is the name of the operating system on
* which we are currently running.
*/
private static final String OS_PROPERTY_NAME = "os.name"; //$NON-NLS-1$
/**
* Return {@code true} if we are running on a Linux OS. This method currently assumes that there
* are only three possible operating systems: Linux, Macintosh, and Windows.
*
* @return {@code true} if we are running on Linux
*/
public static boolean isLinux() {
return !isMac() && !isWindows();
}
/**
* Return {@code true} if we are running on a Macintosh OS.
*
* @return {@code true} if we are running on a Mac
*/
public static boolean isMac() {
return System.getProperty(OS_PROPERTY_NAME).toLowerCase().startsWith(OS_PREFIX_MAC);
}
/**
* Return {@code true} if we are running on a Windows OS.
*
* @return {@code true} if we are running on Windows
*/
public static boolean isWindows() {
return System.getProperty(OS_PROPERTY_NAME).toLowerCase().startsWith(OS_PREFIX_WIN);
}
/**
* Prevent the creation of instances of this class.
*/
private OSUtilities() {
super();
}
}