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+//
+// 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 major;
+ NSInteger minor;
+ NSInteger patch;
+} 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