private static String getEclipseHomeLocation(String launcher) {
if (launcher == null) return null;
File launcherFile = new File(launcher);
if (launcherFile.getParent() == null) return null;
File launcherDir = new File(launcherFile.getParent());
// check for mac os; the os check is copied from EclipseEnvironmentInfo.
String macosx = org.eclipse.osgi.service.environment.Constants.OS_MACOSX;
if (macosx.equals(EclipseEnvironmentInfo.getDefault().getOS()))
launcherDir = getMacOSEclipsoeHomeLocation(launcherDir);
return (launcherDir.exists() && launcherDir.isDirectory())
? launcherDir.getAbsolutePath()
: null;
}
private static File getMacOSEclipsoeHomeLocation(File launcherDir) {
// TODO for now we go up three directories from the launcher dir as long as the parent dir is
// named MacOS; is this always the case?
// TODO not sure if case is important
if (!launcherDir.getName().equalsIgnoreCase("macos")) // $NON-NLS-1$
return launcherDir; // don't do the up three stuff if not in macos directory
String launcherParent = launcherDir.getParent();
if (launcherParent != null) launcherParent = new File(launcherParent).getParent();
if (launcherParent != null) launcherParent = new File(launcherParent).getParent();
return launcherParent == null ? null : new File(launcherParent);
}