1 files changed, 94 insertions, 0 deletions
diff --git a/Source/SPOSInfo.m b/Source/SPOSInfo.m
new file mode 100644
index 00000000..8d91c067
--- /dev/null
+++ b/Source/SPOSInfo.m
@@ -0,0 +1,94 @@
+//
+//  SPOSInfo.m
+//  sequel-pro
+//
+//  Created by Max Lohrmann on 14.02.15.
+//  Copyright (c) 2015 Max Lohrmann. All rights reserved.
+//
+//  Permission is hereby granted, free of charge, to any person
+//  obtaining a copy of this software and associated documentation
+//  files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use,
+//  copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following
+//  conditions:
+//
+//  The above copyright notice and this permission notice shall be
+//  included in all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+//  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+//  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+//  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+//  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+//  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+//  OTHER DEALINGS IN THE SOFTWARE.
+//
+//  More info at <https://github.com/sequelpro/sequelpro>
+
+#import "SPOSInfo.h"
+
+#if __MAC_OS_X_VERSION_MAX_ALLOWED < __MAC_10_10
+// This code is available since 10.8 but public only since 10.10
+typedef struct {
+	NSInteger majorVersion;
+	NSInteger minorVersion;
+	NSInteger patchVersion;
+} NSOperatingSystemVersion;
+
+@interface NSProcessInfo ()
+- (NSOperatingSystemVersion)operatingSystemVersion;
+- (BOOL)isOperatingSystemAtLeastVersion:(NSOperatingSystemVersion)version;
+@end
+
+#endif
+
+int SPOSVersionCompare(SPOSVersion left, SPOSVersion right)
+{
+	if(left.major != right.major) return (left.major < right.major)? -1 : 1;
+	if(left.minor != right.minor) return (left.minor < right.minor)? -1 : 1;
+	if(left.patch != right.patch) return (left.patch < right.patch)? -1 : 1;
+	return 0;
+}
+
+@implementation SPOSInfo
+
++ (SPOSVersion)osVersion
+{
+	NSProcessInfo *procInfo = [NSProcessInfo processInfo];
+	if([procInfo respondsToSelector:@selector(operatingSystemVersion)]) {
+		NSOperatingSystemVersion nsVer = [procInfo operatingSystemVersion];
+		//structs cannot be casted per C standard
+		SPOSVersion spVer = {nsVer.majorVersion,nsVer.minorVersion,nsVer.patchVersion};
+		return spVer;
+	}
+	else {
+		SInt32 versionMajor = 0;
+		SInt32 versionMinor = 0;
+		SInt32 versionPatch = 0;
+		Gestalt(gestaltSystemVersionMajor, &versionMajor);
+		Gestalt(gestaltSystemVersionMinor, &versionMinor);
+		Gestalt(gestaltSystemVersionBugFix, &versionPatch);
+		
+		SPOSVersion spVer = {versionMajor,versionMinor,versionPatch};
+		return spVer;
+	}
+}
+
++ (BOOL)isOSVersionAtLeastMajor:(NSInteger)major minor:(NSInteger)minor patch:(NSInteger)patch
+{
+	NSProcessInfo *procInfo = [NSProcessInfo processInfo];
+	if([procInfo respondsToSelector:@selector(isOperatingSystemAtLeastVersion:)]) {
+		NSOperatingSystemVersion nsVer = {major,minor,patch};
+		return [procInfo isOperatingSystemAtLeastVersion:nsVer];
+	}
+	else {
+		SPOSVersion runningVersion   = [self osVersion];
+		SPOSVersion referenceVersion = {major, minor, patch};
+		return (SPOSVersionCompare(runningVersion, referenceVersion) >= 0);
+	}
+}
+
+@end