1 /*
   2  * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 // Support for detecting Mac OS X Versions
  27 
  28 #include <math.h>
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31 #import <JavaRuntimeSupport/JavaRuntimeSupport.h>
  32 
  33 
  34 // returns 107 for Lion, 106 for SnowLeopard etc.
  35 int getOSXMajorVersion() {
  36     char *ver = JRSCopyOSVersion();
  37     if (ver == NULL) { 
  38         return 0;
  39     }
  40 
  41     int len = strlen(ver);
  42     int v = 0;
  43     
  44     // Third char must be a '.'    
  45     if (len >= 3 && ver[2] == '.') {
  46         int i;
  47         
  48         v = (ver[0] - '0') * 10 + (ver[1] - '0');
  49         for (i = 3; i < len && isdigit(ver[i]); ++i) {
  50             v = v * 10 + (ver[i] - '0');
  51         }
  52     }
  53 
  54     free(ver);
  55     
  56     return v;
  57 }
  58 
  59 BOOL isSnowLeopardOrLower() {
  60     return (getOSXMajorVersion() < 107);
  61 }