diff options
Diffstat (limited to 'Lib/email')
| -rw-r--r-- | Lib/email/_parseaddr.py | 19 | ||||
| -rw-r--r-- | Lib/email/utils.py | 46 |
2 files changed, 57 insertions, 8 deletions
diff --git a/Lib/email/_parseaddr.py b/Lib/email/_parseaddr.py index 4b2f5c6..c455e05 100644 --- a/Lib/email/_parseaddr.py +++ b/Lib/email/_parseaddr.py @@ -47,6 +47,21 @@ def parsedate_tz(data): Accounts for military timezones. """ + res = _parsedate_tz(data) + if res[9] is None: + res[9] = 0 + return tuple(res) + +def _parsedate_tz(data): + """Convert date to extended time tuple. + + The last (additional) element is the time zone offset in seconds, except if + the timezone was specified as -0000. In that case the last element is + None. This indicates a UTC timestamp that explicitly declaims knowledge of + the source timezone, as opposed to a +0000 timestamp that indicates the + source timezone really was UTC. + + """ data = data.split() # The FWS after the comma after the day-of-week is optional, so search and # adjust for this. @@ -138,6 +153,8 @@ def parsedate_tz(data): tzoffset = int(tz) except ValueError: pass + if tzoffset==0 and tz.startswith('-'): + tzoffset = None # Convert a timezone offset into seconds ; -0500 -> -18000 if tzoffset: if tzoffset < 0: @@ -147,7 +164,7 @@ def parsedate_tz(data): tzsign = 1 tzoffset = tzsign * ( (tzoffset//100)*3600 + (tzoffset % 100)*60) # Daylight Saving Time flag is set to -1, since DST is unknown. - return yy, mm, dd, thh, tmm, tss, 0, 1, -1, tzoffset + return [yy, mm, dd, thh, tmm, tss, 0, 1, -1, tzoffset] def parsedate(data): diff --git a/Lib/email/utils.py b/Lib/email/utils.py index 82f7283..aecea65 100644 --- a/Lib/email/utils.py +++ b/Lib/email/utils.py @@ -11,12 +11,14 @@ __all__ = [ 'encode_rfc2231', 'formataddr', 'formatdate', + 'format_datetime', 'getaddresses', 'make_msgid', 'mktime_tz', 'parseaddr', 'parsedate', 'parsedate_tz', + 'parsedate_to_datetime', 'unquote', ] @@ -26,6 +28,7 @@ import time import base64 import random import socket +import datetime import urllib.parse import warnings from io import StringIO @@ -37,6 +40,7 @@ from email._parseaddr import mktime_tz # We need wormarounds for bugs in these methods in older Pythons (see below) from email._parseaddr import parsedate as _parsedate from email._parseaddr import parsedate_tz as _parsedate_tz +from email._parseaddr import _parsedate_tz as __parsedate_tz from quopri import decodestring as _qdecode @@ -110,6 +114,14 @@ ecre = re.compile(r''' ''', re.VERBOSE | re.IGNORECASE) +def _format_timetuple_and_zone(timetuple, zone): + return '%s, %02d %s %04d %02d:%02d:%02d %s' % ( + ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'][timetuple[6]], + timetuple[2], + ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', + 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'][timetuple[1] - 1], + timetuple[0], timetuple[3], timetuple[4], timetuple[5], + zone) def formatdate(timeval=None, localtime=False, usegmt=False): """Returns a date string as specified by RFC 2822, e.g.: @@ -154,14 +166,25 @@ def formatdate(timeval=None, localtime=False, usegmt=False): zone = 'GMT' else: zone = '-0000' - return '%s, %02d %s %04d %02d:%02d:%02d %s' % ( - ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'][now[6]], - now[2], - ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', - 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'][now[1] - 1], - now[0], now[3], now[4], now[5], - zone) + return _format_timetuple_and_zone(now, zone) +def format_datetime(dt, usegmt=False): + """Turn a datetime into a date string as specified in RFC 2822. + + If usegmt is True, dt must be an aware datetime with an offset of zero. In + this case 'GMT' will be rendered instead of the normal +0000 required by + RFC2822. This is to support HTTP headers involving date stamps. + """ + now = dt.timetuple() + if usegmt: + if dt.tzinfo is None or dt.tzinfo != datetime.timezone.utc: + raise ValueError("usegmt option requires a UTC datetime") + zone = 'GMT' + elif dt.tzinfo is None: + zone = '-0000' + else: + zone = dt.strftime("%z") + return _format_timetuple_and_zone(now, zone) def make_msgid(idstring=None, domain=None): @@ -203,6 +226,15 @@ def parsedate_tz(data): return None return _parsedate_tz(data) +def parsedate_to_datetime(data): + if not data: + return None + *dtuple, tz = __parsedate_tz(data) + if tz is None: + return datetime.datetime(*dtuple[:6]) + return datetime.datetime(*dtuple[:6], + tzinfo=datetime.timezone(datetime.timedelta(seconds=tz))) + def parseaddr(addr): addrs = _AddressList(addr).addresslist |