def shortRelativeStringFromDate(nsdate):
"""Input: NSDate object
Output: unicode object, date and time formatted per system locale.
"""
df = NSDateFormatter.alloc().init()
df.setDateStyle_(kCFDateFormatterShortStyle)
df.setTimeStyle_(kCFDateFormatterShortStyle)
df.setDoesRelativeDateFormatting_(True)
return unicode(df.stringFromDate_(nsdate))
def shortRelativeStringFromDate(nsdate):
"""Input: NSDate object
Output: unicode object, date and time formatted per system locale.
"""
df = NSDateFormatter.alloc().init()
df.setDateStyle_(kCFDateFormatterShortStyle)
df.setTimeStyle_(kCFDateFormatterShortStyle)
df.setDoesRelativeDateFormatting_(True)
return unicode(df.stringFromDate_(nsdate))
def stringFromDate(nsdate):
"""Input: NSDate object
Output: unicode object, date and time formatted per system locale.
"""
df = NSDateFormatter.alloc().init()
df.setFormatterBehavior_(NSDateFormatterBehavior10_4)
df.setDateStyle_(kCFDateFormatterLongStyle)
df.setTimeStyle_(kCFDateFormatterShortStyle)
return unicode(df.stringForObjectValue_(nsdate))
def stringFromDate(nsdate):
"""Input: NSDate object
Output: unicode object, date and time formatted per system locale.
"""
df = NSDateFormatter.alloc().init()
df.setFormatterBehavior_(NSDateFormatterBehavior10_4)
df.setDateStyle_(kCFDateFormatterLongStyle)
df.setTimeStyle_(kCFDateFormatterShortStyle)
return unicode(df.stringForObjectValue_(nsdate))
def main():
#
# UNIX command 'date'
#
if False:
pr("UNIX command 'date'")
cmd = 'date'
r = commands.getoutput(cmd)
pr("UNIX date command", r)
pr("r.split()[4]", r.split()[4])
#
# Python datetime
#
if False:
pr("Python datetime")
pr('datetime.datetime.now() ', datetime.datetime.now() )
t = datetime.datetime.now() - datetime.datetime.utcnow()
pr("datetime.now() - datetime.utcnow()", t)
pr("timedelta(-1, 68399, 999998) == timedelta(-1, 68400, 0)",
datetime.timedelta(-1, 68399, 999998) == datetime.timedelta(-1, 68400, 0)
)
pr("datetime.timedelta(hours=-5, seconds = -1) < t < datetime.timedelta(hours=-5, seconds = 1)",
datetime.timedelta(hours=-5, seconds = -1) < t < datetime.timedelta(hours=-5, seconds = 1))
# print datetime.timedelta(hours=-5, seconds = 0) < t < datetime.timedelta(hours=-5, seconds = 1) #False
# print datetime.timedelta(hours=-5, seconds = -1) < t < datetime.timedelta(hours=-5, seconds = 0) #True
t2 = datetime.datetime.utcnow() + t
pr('strftime("%a %Y.%m.%d %I:%M:%S")', t2.strftime("%a %Y.%m.%d %I:%M:%S") )
d3 = datetime.datetime(2011, 7, 29, 23, 46, 39)
pr( 'str(d3)', str(d3) )
prr("_DATETIME_to_python(d3)", _DATETIME_to_python(d3))
#
# Cocoa (Foundation) NSDate, NSCalendar, NSDateFormatter, etc.
#
pr("Cocoa (Foundation) NSDate, etc.")
date1 = NSDate.dateWithTimeIntervalSinceReferenceDate_(333675999.713839)
date2 = NSDate.dateWithTimeIntervalSinceReferenceDate_(333675999.713839 - 6 * 30 * 24 *60 * 60)
date3 = NSDate.distantPast() # dateWithTimeIntervalSinceNow_(0- 6 * 30 * 24 *60 * 60)
pr( "date1" , date1)
pr( "date2" , date2)
pr( "date3" , date3)
prr("_DATETIME_to_python(date1)", _DATETIME_to_python(date1))
# pr( "str(date1) ", str(date1) )
currentCalendar = NSCalendar.currentCalendar()
#
# time zones
#
def pr_tz(l, tz):
s = tz.secondsFromGMT() / (60 * 60)
print "%s:\n\n %r (%s) offset %d hours%s\n" % (l,tz.name(), tz.abbreviation(), s ,
" (**local**)" if "Local Time Zone " in tz.description() else "")
# print tz.description()
# timeZone_Current = currentCalendar.timeZone()
#
# pr_tz('timeZone_Local', timeZone_Local)
#
# # s = timeZone_GMT.secondsFromGMT() / (60 * 60)
# # pr("timeZone_GMT", str(timeZone_GMT) + " offset: %d hours" % s )
# pr( "timeZone_Local.isDaylightSavingTime()", timeZone_Local.isDaylightSavingTime() ) # determines whether daylight saving time is currently in effect.
# pr( "timeZone_Local.daylightSavingTimeOffset()", timeZone_Local.daylightSavingTimeOffset() ) # determines the current daylight saving time offset. For most time zones this is either zero or one.
# pr( "timeZone_Local.nextDaylightSavingTimeTransition()", timeZone_Local.nextDaylightSavingTimeTransition())
# Formatting for Machines: Controlled Environment Needed
#
# It is a whole other matter if you need to create a date string according to
# the specification of a certain file format or API.
# In such a case, you usually have to follow a very strict spec to
# make sure the other party can read the string you are generating.
# By default, NSDateFormatter uses the user’s current calendar and time zone,
# which are possibly different from the requirements.
# Most file formats and web APIs use the western, Gregorian calendar,
# so we need to make sure that our date formatter uses it, too.
dateFormatter_Local = NSDateFormatter.alloc().init()
dateFormatter_Current = NSDateFormatter.alloc().init()
dateFormatter_GMT = NSDateFormatter.alloc().init()
dateFormatter_GMT5 = NSDateFormatter.alloc().init()
dateFormatter_NY = NSDateFormatter.alloc().init()
# dateFormatter_Local.__name__ = 'dateFormatter_Local'
formatter_names = [ ]
time_zones = [
('Local' , NSTimeZone.localTimeZone()) ,
('Current' , currentCalendar.timeZone()) ,
('GMT' , NSTimeZone.timeZoneForSecondsFromGMT_(0)) ,
('GMT5' , NSTimeZone.timeZoneForSecondsFromGMT_(-18000)) ,
('NY' , NSTimeZone.timeZoneWithName_(u'America/New_York')) ,
('System', NSTimeZone. systemTimeZone() ) ,
('G' , NSTimeZone.timeZoneWithAbbreviation_(u'GMT'))
]
dx = [ {'name' : n , 'tz' : tz, 'df' : NSDateFormatter.alloc().init() } for n, tz in time_zones ]
s = [ "%12s: %s" % (x['name'], "%r (%s) %s%s" % tz_pr(x['tz']) ) for x in dx ]
print "\n".join(s)
print
def eq_classes(dx, k):
# z = []
d = {}
for n, x in enumerate(dx):
if x[k] not in d:
d[x[k]] = set([ x['name'] ])
for m in range(n):
y = dx[m]
if x != y and x[k] == y[k]:
# z.append((x['name'], y['name']))
if x[k] in d:
d[x[k]].add( x['name'] )
# else:
# d[x[k]] = set([ x['name'] ])
if y[k] in d:
d[y[k]].add( y['name'] )
# else:
# d[y[k]] = [ y['name'] ]
return d
print "eq_classes of dx (under tz):"
print
eq_classes_dx = eq_classes(dx, 'tz')
print "\n".join([ "%20s: %s" % (x.name(), list(eq_classes_dx[x])) for x in eq_classes_dx])
print
eq_names = [ list(eq_classes_dx[x])[0] for x in eq_classes_dx ]
dx = [ z for z in dx if z['name'] in eq_names ]
s = [ "%12s: %s" % (x['name'], "%r (%s) %s%s" % tz_pr(x['tz']) ) for x in dx ]
print "\n".join(s)
print
# print "\n".join([ "%20s: %r" % [k for k in x] for x in dx ])
# format string (formatter)
# format_string = "E yyyy'-'MM'-'dd' 'HH':'mm':'ss VVVV" # ==> "AD 2011-07-29 19:46:39 United States (New York)"
# format_string = "E yyyy'-'MM'-'dd' 'HH':'mm':'ss VVV" # ==> " 'Fri 2011-07-29 19:46:39 GMT-04:00'
format_string = "E yyyy'-'MM'-'dd' 'HH':'mm':'ss z" # ==> 'Fri 2011-07-29 19:46:39 EDT') or 'EST', or 'GMT-04:00'
map ( lambda y : NSDateFormatter.setDateFormat_(y, format_string) , [x['df'] for x in dx] )
# locale
locale = NSLocale.alloc().initWithLocaleIdentifier_("en_US_POSIX")
pr("NSDate.date()", NSDate.date())
map ( lambda y : NSDateFormatter.setLocale_(y, locale) , [x['df'] for x in dx] )
map ( lambda y : NSDateFormatter.setTimeZone_(y[0], y[1]) , [ (x['df'], x['tz']) for x in dx] )
pr('descriptionWithCalendarFormat:timeZone:locale',
date1.descriptionWithCalendarFormat_timeZone_locale_( None, None, locale) )
# format_string,NSTimeZone.timeZoneForSecondsFromGMT_(-18000),locale
pr('descriptionWithCalendarFormat:timeZone:locale',
date1.descriptionWithCalendarFormat_timeZone_locale_( None, NSTimeZone.timeZoneForSecondsFromGMT_(-18000), locale) )
# format_string,NSTimeZone.timeZoneForSecondsFromGMT_(-18000),locale
for a in [date1, date2, date3]:
dsd = get_datestrings(dx, a)
s = [ "%12s: %r" % (x[0], x[1] ) for x in dsd ]
print "\n".join(s)
print
#
# date1_components
#
fcdc = currentCalendar.components_fromDate_(
NSYearCalendarUnit |
NSMonthCalendarUnit |
NSDayCalendarUnit |
NSHourCalendarUnit |
NSMinuteCalendarUnit |
NSSecondCalendarUnit ,
date1
)
pr( "currentCalendar.components_fromDate",
[ fcdc.year(), fcdc.month(), fcdc.day(), fcdc.hour(), fcdc.minute(), fcdc.second(), ]
)
dateOfKeynote = currentCalendar.dateFromComponents_(fcdc)
pr( "currentCalendar.dateFromComponents", dateOfKeynote )
def get_datestrings(dx, date1):
return map ( lambda y : (y[0], NSDateFormatter.stringFromDate_(y[1], date1)) , [ (x['name'] , x['df']) for x in dx] )
from Foundation import NSCalendar, NSDayCalendarUnit, NSWeekdayCalendarUnit,\
NSYearCalendarUnit, NSMonthCalendarUnit, NSHourCalendarUnit, \
NSMinuteCalendarUnit, NSSecondCalendarUnit, NSTimeZone, NSDate, \
NSDateFormatter, NSGregorianCalendar, NSLocale
# choose some timezones with which to display some dates, they're fun!
time_zones = [
('Local' , NSTimeZone.localTimeZone()) ,
('GMT' , NSTimeZone.timeZoneForSecondsFromGMT_(0))
# ('G' , NSTimeZone.timeZoneWithAbbreviation_(u'GMT'))
]
dateFormatters = [ {'name' : n , 'tz' : tz, 'df' : NSDateFormatter.alloc().init() } for n, tz in time_zones ]
map ( lambda y : NSDateFormatter.setTimeZone_(y[0], y[1]) , [ (x['df'], x['tz']) for x in dateFormatters] )
format_string = "E yyyy'-'MM'-'dd' 'HH':'mm':'ss z" # ==> 'Fri 2011-07-29 19:46:39 EDT' or 'EST', or 'GMT-04:00'
format_string = "E yyyy.MM.dd HH:mm z" # ==> Tue 2012.04.03 00:39 EDT
map ( lambda y : NSDateFormatter.setDateFormat_(y, format_string) , [x['df'] for x in dateFormatters] )
def print_timezones(l):
print l + ":" # "time_zones:"
print
s = [ "%12s: %s" % (x['name'], "%r (%s) %s%s" % tz_pr(x['tz']) ) for x in dateFormatters ]
print "\n".join(s)
print
# formatting assist
class Decoy(object):
def get(self, url):
unsupported = 'could not find the "requests" library (try running "python setup.py build" first)'
raise RuntimeError(unsupported)
HTTP = Decoy()
def binaryish(content, format):
bin_types = ('pdf','eps','png','jpg','jpeg','gif','tiff','tif','zip','tar','gz')
bin_formats = ('raw','bytes','img','image')
if any(b in content for b in bin_types):
return True
if format:
return any(b in format for b in bin_types+bin_formats)
return False
_nsdf = NSDateFormatter.alloc().init()
_nsdf.setLocale_(NSLocale.alloc().initWithLocaleIdentifier_("en_US_POSIX"))
_nsdf.setDateFormat_("EEE',' dd' 'MMM' 'yyyy HH':'mm':'ss zzz")
_nsdf.setTimeZone_(NSTimeZone.timeZoneForSecondsFromGMT_(0))
def last_modified(resp):
"""Return the last modified date as a unix time_t"""
last_mod = _nsdf.dateFromString_(resp.headers.get('Last-Modified'))
if not last_mod:
last_mod = NSDate.date()
return last_mod.timeIntervalSince1970()
### File/URL Reader ###
def read(pth, format=None, encoding=None, cols=None, **kwargs):
from __future__ import with_statement
__author__ = "dbr/Ben"
__version__ = "1.9"
import os
import time
import errno
import httplib
import urllib2
import StringIO
from hashlib import md5
from threading import RLock
from Foundation import NSDateFormatter, NSLocale, NSTimeZone, NSDate
_date_parser = NSDateFormatter.alloc().init()
_date_parser.setLocale_(NSLocale.alloc().initWithLocaleIdentifier_("en_US_POSIX"))
_date_parser.setDateFormat_("EEE',' dd' 'MMM' 'yyyy HH':'mm':'ss zzz")
_date_parser.setTimeZone_(NSTimeZone.timeZoneForSecondsFromGMT_(0))
def GET(url):
"""Return the contents of a url (from cache if possible)"""
opener = urllib2.build_opener(CacheHandler("/tmp/plod"))
response = opener.open(url)
last_mod = _date_parser.dateFromString_(response.headers.get('Last-Modified'))
if not last_mod:
last_mod = NSDate.date()
return response, last_mod.timeIntervalSince1970()
def dateFromString(myDateAsAStringValue):
df = NSDateFormatter.alloc().init()
df.setTimeStyle_(NSDateFormatterFullStyle) # <=== magic. have to do this(?)
df.setDateFormat_("yyyy-MM-dd HH:mm:ss") #"yyyy-MM-dd hh:mm:ss") # "2013-03-30 18:11:07"
myDate = db_df.dateFromString_(myDateAsAStringValue)
return myDate
from __future__ import with_statement
__author__ = "dbr/Ben"
__version__ = "1.9"
import os
import time
import errno
import httplib
import urllib2
import StringIO
from hashlib import md5
from threading import RLock
from Foundation import NSDateFormatter, NSLocale, NSTimeZone, NSDate
_date_parser = NSDateFormatter.alloc().init()
_date_parser.setLocale_(
NSLocale.alloc().initWithLocaleIdentifier_("en_US_POSIX"))
_date_parser.setDateFormat_("EEE',' dd' 'MMM' 'yyyy HH':'mm':'ss zzz")
_date_parser.setTimeZone_(NSTimeZone.timeZoneForSecondsFromGMT_(0))
def GET(url):
"""Return the contents of a url (from cache if possible)"""
opener = urllib2.build_opener(CacheHandler("/tmp/plod"))
response = opener.open(url)
last_mod = _date_parser.dateFromString_(
response.headers.get('Last-Modified'))
if not last_mod:
last_mod = NSDate.date()
def pr7z(self, item_dict, stak=None, depth_limit=None, verbose_level_threshold=1):
"""0-0 vol0006 5651 6227 Wed 2013.03.20 13:29 EDT 1 <filename>"""
if self.verbose_level < verbose_level_threshold:
return
# from "man ls"
# If the -l option is given, the following information is displayed for each file:
# file mode, number of links, owner name, group name, number of bytes in the file,
# abbreviated month, day-of-month file was last modified, hour file last modified,
# minute file last modified, and the pathname.
# assemble a list of strings to print, then " ".join()
s = []
if GPR.verbose_level >= 2 and 'current_item_directory_is_being_checked' in item_dict:
g = "[^]" if item_dict['current_item_directory_is_being_checked'] else "[-]"
s += [g]
# if RS1_db_rels is not None:
# s0 = dict([(k, RS1_db_rels[k]) for k in RS1_db_rels] )# avoid self-creation
# s1 = '[%s]' % "-".join([ "%d"%(len(s0[k])) if k in s0 else "*" for k in stak])
# s += [ "%-6s" % s1 ]
#
# # this line *creates* an entry since RS is a *default* dict and k isn't already present in RS
# # s1 = '[%s]' % "-".join(["%d"%(len(RS1_db_rels[k])) for k in stak])
#
# if False:
# s2 = '[%s]' % "-".join(["%d"%(len(RS2_ins[k])) for k in RS2_ins])
# s1 += '+'+s2
# s += [ "%-12s" % s3 ]
if 'vol_id' in item_dict:
fmt = "%%-%ds" % self.vol_id_width # "%-7s"
s += [ fmt % item_dict['vol_id'] ]
if 'NSFileSystemFolderNumber' in item_dict: # really, if is NSDict or relation
folder_id = item_dict['NSFileSystemFolderNumber']
else:
folder_id = item_dict['folder_id']
file_id = item_dict['NSFileSystemFileNumber']
fmt = "%%%dd %%%dd" % (self.file_id_width , self.file_id_width)
s += [ "%8d %8d" % (folder_id, file_id) ]
# If the modification time of the file is more than 6 months
# in the past or future, then the year of the last modification
# is displayed in place of the hour and minute fields. [man ls]
file_mod_date = item_dict[NSURLContentModificationDateKey]
# compare:
# Returns an NSComparisonResult value that indicates the temporal ordering of the receiver and another given date.
# date_six_months_ago = NSDate.dateWithTimeIntervalSinceNow_(0- 6 * 30 * 24 *60 * 60)
date_six_months_ago = NSDate.dateWithTimeIntervalSinceNow_(0- 12 * 30 * 24 *60 * 60) # one year ago
if False: # ie, if doing short versions
if date_six_months_ago.compare_(file_mod_date) == NSOrderedDescending: # ie, date_six_months_ago is later in time than file_mod_date
format_string = self.date_format_short_early
if format_string.endswith(" z"):
fmt = "%3s %15s"
else:
fmt = "%3s %11s"
else:
format_string = self.date_format_short
if format_string.endswith(" z"):
fmt = "%3s %15s"
else:
fmt = "%3s %11s"
# don't need to set format string for this formatter? each time through?
NSDateFormatter.setDateFormat_(dateFormatters[0]['df'], format_string)
sa = dateFormatters[0]['df'].stringFromDate_(file_mod_date)
s += [ fmt % ( sa[0:3], sa[4:] ) ]
else: # no difference for early or recent for long date format
if date_six_months_ago.compare_(file_mod_date) == NSOrderedDescending:
format_string = self.date_format_early
fmt = "%19s"
else:
format_string = self.date_format
fmt = "%19s"
# don't need to set format string for this formatter? each time through?
NSDateFormatter.setDateFormat_(dateFormatters[0]['df'], format_string)
sa = dateFormatters[0]['df'].stringFromDate_(file_mod_date)
s += [ fmt % ( sa, ) ]
depth = item_dict['depth']
filename = item_dict[NSURLNameKey]
if item_dict['NSURLIsDirectoryKey']:
filename += "/"
if 'directory_is_up_to_date' in item_dict:
filename += ("(up-to-date)" if item_dict['directory_is_up_to_date'] else "(modified)" )
file_uti = item_dict[NSURLLocalizedTypeDescriptionKey] # NSURLTypeIdentifierKey]
if len(file_uti) > self.file_uti_width:
n1 = int(self.file_uti_width/2)
n2 = self.file_uti_width - n1
file_uti = file_uti[:n1] + u"—" + file_uti[-n2:]
fmt = "%%-%ds" % ( self.file_uti_width )
s += [ fmt % file_uti ]
if depth_limit and depth >= depth_limit-1:
s += [ "%2d! %-54s" % (depth, filename) ]
else:
s += [ "%2d %-54s" % (depth, filename) ]
if GPR.verbose_level >= 2:
print
print " ".join(s)
#print repr(s) # " ".join(s)
if GPR.verbose_level >= 2:
print