/usr/lib64/python2.6/site-packages/mx/DateTime
Edit: /usr/lib64/python2.6/site-packages/mx/DateTime/ARPA.py (7616B)
""" This module provides a set of constructors and routines to convert
between DateTime[Delta] instances and ARPA representations of date
and time. The format is specified by RFC822 + RFC1123.
Note: Timezones are only interpreted by ParseDateTimeGMT(). All
other constructors silently ignore the time zone information.
Copyright (c) 1998-2000, Marc-Andre Lemburg; mailto:mal@lemburg.com
Copyright (c) 2000-2008, eGenix.com Software GmbH; mailto:info@egenix.com
See the documentation for further information on copyrights,
or contact the author. All Rights Reserved.
"""
import DateTime,Timezone
import re,string
# Grammar: RFC822 + RFC1123 + depreciated RFC850
_litday = '(?P
Mon|Tue|Wed|Thu|Fri|Sat|Sun)[a-z]*'
_litmonth = '(?PJan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)'\
'[a-z]*'
_date = ('(?:(?P\d?\d)(?: +' + _litmonth +
' +|-(?P\d?\d)-)(?P(?:\d\d)?\d\d))')
_zone = Timezone.zone
_time = ('(?:(?P\d\d):(?P\d\d)'
'(?::(?P\d\d))?(?: +'+_zone+')?)')
# Timezone information is made optional because some mail apps
# forget to add it (most of these seem to be spamming engines, btw).
# It defaults to UTC.
_arpadate = '(?:'+ _litday + ',? )? *' + _date
_arpadatetime = '(?:'+ _litday + ',? )? *' + _date + ' +' + _time
# We are not strict about the extra characters: some applications
# add extra information to the date header field. Additional spaces
# between the fields and extra characters in the literal day
# and month fields are also silently ignored.
arpadateRE = re.compile(_arpadate)
arpadatetimeRE = re.compile(_arpadatetime)
# Translation tables
litdaytable = {'mon':0, 'tue':1, 'wed':2, 'thu':3, 'fri':4, 'sat':5, 'sun':6 }
litmonthtable = {'jan':1, 'feb':2, 'mar':3, 'apr':4, 'may':5, 'jun':6,
'jul':7, 'aug':8, 'sep':9, 'oct':10, 'nov':11, 'dec':12 }
_days = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
_months = [None, 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec' ]
def ParseDate(arpastring,parse_arpadate=arpadateRE.match,
strip=string.strip,atoi=string.atoi,atof=string.atof,
lower=string.lower):
"""ParseDate(arpastring)
Returns a DateTime instance reflecting the given ARPA
date. Only the date part is parsed, any time part will be
ignored. The instance's time is set to 0:00:00.
"""
s = strip(arpastring)
date = parse_arpadate(s)
if not date:
raise ValueError,'wrong format'
litday,day,litmonth,month,year = date.groups()
if len(year) == 2:
year = DateTime.add_century(atoi(year))
else:
year = atoi(year)
if litmonth:
litmonth = lower(litmonth)
try:
month = litmonthtable[litmonth]
except KeyError:
raise ValueError,'wrong month format'
else:
month = atoi(month)
day = atoi(day)
# litday and timezone are ignored
return DateTime.DateTime(year,month,day)
def ParseDateTime(arpastring,parse_arpadatetime=arpadatetimeRE.match,
strip=string.strip,atoi=string.atoi,atof=string.atof,
lower=string.lower):
"""ParseDateTime(arpastring)
Returns a DateTime instance reflecting the given ARPA date assuming
it is local time (timezones are silently ignored).
"""
s = strip(arpastring)
date = parse_arpadatetime(s)
if not date:
raise ValueError,'wrong format or unknown time zone'
litday,day,litmonth,month,year,hour,minute,second,zone = date.groups()
if len(year) == 2:
year = DateTime.add_century(atoi(year))
else:
year = atoi(year)
if litmonth:
litmonth = lower(litmonth)
try:
month = litmonthtable[litmonth]
except KeyError:
raise ValueError,'wrong month format'
else:
month = atoi(month)
day = atoi(day)
hour = atoi(hour)
minute = atoi(minute)
if second is None:
second = 0.0
else:
second = atof(second)
# litday and timezone are ignored
return DateTime.DateTime(year,month,day,hour,minute,second)
def ParseDateTimeGMT(arpastring,parse_arpadatetime=arpadatetimeRE.match,
strip=string.strip,atoi=string.atoi,atof=string.atof,
lower=string.lower):
"""ParseDateTimeGMT(arpastring)
Returns a DateTime instance reflecting the given ARPA date converting
it to UTC (timezones are honored).
"""
s = strip(arpastring)
date = parse_arpadatetime(s)
if not date:
raise ValueError,'wrong format or unknown time zone'
litday,day,litmonth,month,year,hour,minute,second,zone = date.groups()
if len(year) == 2:
year = DateTime.add_century(atoi(year))
else:
year = atoi(year)
if litmonth:
litmonth = lower(litmonth)
try:
month = litmonthtable[litmonth]
except KeyError:
raise ValueError,'wrong month format'
else:
month = atoi(month)
day = atoi(day)
hour = atoi(hour)
minute = atoi(minute)
if second is None:
second = 0.0
else:
second = atof(second)
offset = Timezone.utc_offset(zone)
# litday is ignored
return DateTime.DateTime(year,month,day,hour,minute,second) - offset
# Alias
ParseDateTimeUTC = ParseDateTimeGMT
def str(datetime,tz=None):
"""str(datetime,tz=DateTime.tz_offset(datetime))
Returns the datetime instance as ARPA date string. tz can be given
as DateTimeDelta instance providing the time zone difference from
datetime's zone to UTC. It defaults to
DateTime.tz_offset(datetime) which assumes local time. """
if tz is None:
tz = datetime.gmtoffset()
return '%s, %02i %s %04i %02i:%02i:%02i %+03i%02i' % (
_days[datetime.day_of_week], datetime.day,
_months[datetime.month], datetime.year,
datetime.hour, datetime.minute, datetime.second,
tz.hour,tz.minute)
def strGMT(datetime):
""" strGMT(datetime)
Returns the datetime instance as ARPA date string assuming it
is given in GMT. """
return '%s, %02i %s %04i %02i:%02i:%02i GMT' % (
_days[datetime.day_of_week], datetime.day,
_months[datetime.month], datetime.year,
datetime.hour, datetime.minute, datetime.second)
def strUTC(datetime):
""" strUTC(datetime)
Returns the datetime instance as ARPA date string assuming it
is given in UTC. """
return '%s, %02i %s %04i %02i:%02i:%02i UTC' % (
_days[datetime.day_of_week], datetime.day,
_months[datetime.month], datetime.year,
datetime.hour, datetime.minute, datetime.second)
def _test():
import sys, os, rfc822
file = os.path.join(os.environ['HOME'], 'nsmail/Inbox')
f = open(file, 'r')
while 1:
m = rfc822.Message(f)
if not m:
break
print 'From:', m.getaddr('from')
print 'To:', m.getaddrlist('to')
print 'Subject:', m.getheader('subject')
raw = m.getheader('date')
try:
date = ParseDateTimeUTC(raw)
print 'Date:',strUTC(date)
except ValueError,why:
print 'PROBLEMS:',repr(raw),'-->',why
raw_input('...hit return to continue')
print
# Netscape mail file
while 1:
line = f.readline()
if line[:6] == 'From -':
break
if __name__ == '__main__':
_test()