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//
// GTMSystemVersion.m
//
// Copyright 2007-2008 Google Inc.
//
// 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.
//
#import "GTMSystemVersion.h"
#import <Carbon/Carbon.h>
#import <stdlib.h>
@implementation GTMSystemVersion
+ (BOOL)isPanther {
long major, minor;
[self getMajor:&major minor:&minor bugFix:nil];
return major == 10 && minor == 3;
}
+ (BOOL)isTiger {
long major, minor;
[self getMajor:&major minor:&minor bugFix:nil];
return major == 10 && minor == 4;
}
+ (BOOL)isLeopard {
long major, minor;
[self getMajor:&major minor:&minor bugFix:nil];
return major == 10 && minor == 5;
}
+ (BOOL)isPantherOrGreater {
long major, minor;
[self getMajor:&major minor:&minor bugFix:nil];
return (major > 10) || (major == 10 && minor >= 3);
}
+ (BOOL)isTigerOrGreater {
long major, minor;
[self getMajor:&major minor:&minor bugFix:nil];
return (major > 10) || (major == 10 && minor >= 4);
}
+ (BOOL)isLeopardOrGreater {
long major, minor;
[self getMajor:&major minor:&minor bugFix:nil];
return (major > 10) || (major == 10 && minor >= 5);
}
+ (void)getMajor:(long*)major minor:(long*)minor bugFix:(long*)bugFix {
long binaryCodedDec;
if (major) {
require_noerr(Gestalt(gestaltSystemVersionMajor, major), failedGestalt);
}
if (minor) {
require_noerr(Gestalt(gestaltSystemVersionMinor, minor), failedGestalt);
}
if (bugFix) {
require_noerr(Gestalt(gestaltSystemVersionBugFix, bugFix), failedGestalt);
}
return;
failedGestalt:
// gestaltSystemVersionMajor et al are only on 10.4 and above, so they
// could fail if we have this code on 10.3.
if (Gestalt(gestaltSystemVersion, &binaryCodedDec)) {
// not much else we can do...
if (major) *major = 0;
if (minor) *minor = 0;
if (bugFix) *bugFix = 0;
return;
}
// Note that this code will return x.9.9 for any system rev parts that are
// greater than 9 (ie 10.10.10 will be 10.9.9. This shouldn't ever be a
// problem as the code above takes care of this for any system above 10.4.
if (major) {
int msb = (binaryCodedDec & 0x0000F000L) >> 12;
msb *= 10;
int lsb = (binaryCodedDec & 0x00000F00L) >> 8;
*major = msb + lsb;
}
if (minor) {
*minor = (binaryCodedDec & 0x000000F0L) >> 4;
}
if (bugFix) {
*bugFix = (binaryCodedDec & 0x0000000FL);
}
}
@end
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