def subtract_tzoffset_from_date(the_date):
"""Input: NSDate object
Output: NSDate object with same date and time as the UTC.
In Los Angeles (PDT), '2011-06-20T12:00:00Z' becomes
'2011-06-20 12:00:00 -0700'.
In New York (EDT), it becomes '2011-06-20 12:00:00 -0400'.
This allows a pkginfo item to reference a time in UTC that
gets translated to the same relative local time.
A force_install_after_date for '2011-06-20T12:00:00Z' will happen
after 2011-06-20 12:00:00 local time.
"""
# find our time zone offset in seconds
timezone = NSTimeZone.defaultTimeZone()
seconds_offset = timezone.secondsFromGMTForDate_(the_date)
# return new NSDate minus local_offset
return NSDate.alloc(
).initWithTimeInterval_sinceDate_(-seconds_offset, the_date)
def add_tzoffset_to_date(the_date):
"""Input: NSDate object
Output: NSDate object with timezone difference added
to the date. This allows conditional_item conditions to
be written like so:
<Key>condition</key>
<string>date > CAST("2012-12-17T16:00:00Z", "NSDate")</string>
with the intent being that the comparision is against local time.
"""
# find our time zone offset in seconds
timezone = NSTimeZone.defaultTimeZone()
seconds_offset = timezone.secondsFromGMTForDate_(the_date)
# return new NSDate minus local_offset
return NSDate.alloc(
).initWithTimeInterval_sinceDate_(seconds_offset, the_date)
def add_tzoffset_to_date(the_date):
"""Input: NSDate object
Output: NSDate object with timezone difference added
to the date. This allows conditional_item conditions to
be written like so:
<Key>condition</key>
<string>date > CAST("2012-12-17T16:00:00Z", "NSDate")</string>
with the intent being that the comparision is against local time.
"""
# find our time zone offset in seconds
timezone = NSTimeZone.defaultTimeZone()
seconds_offset = timezone.secondsFromGMTForDate_(the_date)
# return new NSDate minus local_offset
return NSDate.alloc().initWithTimeInterval_sinceDate_(
seconds_offset, the_date)
def schedule_notification(args):
"""Schedule a notification to be delivered to users"""
# Get the arguments from the system-level preferences (i.e.
# /Library/Preferences/com.sheagcraig.yo.plist). This precludes us
# from using the _slightly_ shorter CFPreferencesCopyAppValue.
notifications = CFPreferencesCopyValue("Notifications", BUNDLE_ID,
kCFPreferencesAnyUser,
kCFPreferencesAnyHost)
# We get an immutable NSCFDictionary back from CFPreferences, so
# copy it to a mutable python dict.
notifications = dict(notifications) if notifications else {}
# Convert args to string representation of a python list for later
# reconversion back to python.
notifications[repr(args)] = NSDate.alloc().init()
CFPreferencesSetValue("Notifications", notifications, BUNDLE_ID,
kCFPreferencesAnyUser, kCFPreferencesAnyHost)
# Use the simpler `AppSynchroniize`; it seems to flush all changes,
# despite having to use the primitive methods above.
CFPreferencesAppSynchronize(BUNDLE_ID)
