/*

File: Utilities.m

Abstract: Utilities used across the sample

Version: 1.0

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*/

#import "Utilities.h"

#import "PDELogging.h"

// This function checks if we are running on 10.5 or later

// This function has been chosen to verify some compiler settings

// to ensure that everything is configured correctly.

BOOL RunningOn105OrLater()

{

    #if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_4

    #error This PDE requires Mac OS X 10.4 or later

    #else // MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_4

    #if MAC_OS_X_VERSION_MIN_REQUIRED == MAC_OS_X_VERSION_10_4

    #if __LP64__

    #error 64-bit compilation requires Mac OS X 10.5 or later

    #endif // __LP64__

    // In 32-bit mode, we can only assume we are on Mac OS X 10.4

    // so we test to see if we are on 10.5 or later and return the result.

    static BOOL tested = NO, tenFiveOrLater = NO;

    if(!tested)

    {

        // Assuming 10.4.0 should we get any errors from Gestalt.

        SInt32 major = 10, minor = 4, bugfix = 0;

        Gestalt(gestaltSystemVersionMajor, &major);

        Gestalt(gestaltSystemVersionMinor, &minor);

        Gestalt(gestaltSystemVersionBugFix, &bugfix);

        FLog(@"System Version %i.%i.%i", major, minor, bugfix);

        tenFiveOrLater = (major > 10) || ((major == 10) && (minor >= 5));

        tested = YES;

    }

    FLog(@"(32-bit) Mac OS X 10.5 or later: %s", tenFiveOrLater ? "YES" : "NO");

    return tenFiveOrLater;

    #else // MAC_OS_X_VERSION_MIN_REQUIRED == MAC_OS_X_VERSION_10_4

    // NOTE: Gestalt is available in 64-bit, we simply choose not to

    // use it here because we know that if we are in 64-bit mode,

    // we are on 10.5 or later and thus there is no need to check.

    FLog(@"(64-bit) Mac OS X 10.5 or later");

    return YES;

    #endif // MAC_OS_X_VERSION_MIN_REQUIRED == MAC_OS_X_VERSION_10_4

    #endif // MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_4

}