platform/util-rt/src/com/intellij/openapi/util/SystemInfoRt.java

/*
 * Copyright 2000-2014 JetBrains s.r.o.
 *
 * Licensed 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 com.intellij.openapi.util;

import java.util.Locale;

/**
 * Stripped-down version of {@code com.intellij.openapi.util.SystemInfo}.
 * Intended to use by external (out-of-IDE-process) runners and helpers so it should not contain any library dependencies.
 *
 * @since 12.0
 */
@SuppressWarnings({"HardCodedStringLiteral", "UtilityClassWithoutPrivateConstructor"})
public class SystemInfoRt {
  public static final String OS_NAME = System.getProperty("os.name");
  public static final String OS_VERSION = System.getProperty("os.version").toLowerCase(Locale.US);

  private static final String _OS_NAME = OS_NAME.toLowerCase(Locale.US);
  public static final boolean isWindows = _OS_NAME.startsWith("windows");
  public static final boolean isOS2 = _OS_NAME.startsWith("os/2") || _OS_NAME.startsWith("os2");
  public static final boolean isMac = _OS_NAME.startsWith("mac");
  public static final boolean isLinux = _OS_NAME.startsWith("linux");
  public static final boolean isFreeBSD = _OS_NAME.startsWith("freebsd");
  public static final boolean isSolaris = _OS_NAME.startsWith("sunos");
  public static final boolean isUnix = !isWindows && !isOS2;

  public static final boolean isFileSystemCaseSensitive = isUnix && !isMac ||
                                                          "true".equalsIgnoreCase(System.getProperty("idea.case.sensitive.fs"));
}