bool check_date_comparison ()
{
CFDateRef date1, date2;
// Standard Core Foundation comparison result.
CFComparisonResult result;
CFShow(CFSTR("Checking date comparison functions:"));
// Create two CFDates from absolute time.
date1 = CFDateCreate(kCFAllocatorDefault, CFAbsoluteTimeGetCurrent());
date2 = CFDateCreate(kCFAllocatorDefault, CFAbsoluteTimeGetCurrent());
// Pass NULL for the context param.
result = CFDateCompare(date1, date2, NULL);
switch (result) {
case kCFCompareLessThan:
CFShow(CFSTR("date1 is before date2!\n"));
break;
case kCFCompareEqualTo:
CFShow(CFSTR("date1 is the same as date2!\n"));
break;
case kCFCompareGreaterThan:
CFShow(CFSTR("date1 is after date2!\n"));
break;
}
printf("\n");
return true;
}
/*
*
* isEntryValidAndFuturistic
* Returns true if the CFDictionary is validly formed
* AND if the date is in the future
* Returns false if anything about the dictionary is invalid
* OR if the CFDate is prior to the current time
*
*/
static bool
isEntryValidAndFuturistic(CFDictionaryRef wakeup_dict, CFDateRef date_now)
{
CFDateRef wakeup_date;
bool ret = true;
wakeup_dict = isA_CFDictionary(wakeup_dict);
if(!wakeup_dict)
{
// bogus entry!
ret = false;
} else
{
// valid entry
wakeup_date = isA_CFDate(CFDictionaryGetValue(wakeup_dict,
CFSTR(kIOPMPowerEventTimeKey)));
if( !wakeup_date
|| (kCFCompareLessThan == CFDateCompare(wakeup_date, date_now, 0)))
{
// date is too early
ret = false;
}
// otherwise date is after now, and ret = true
}
return ret;
}