Re: day of week in Safari RSS

• Subject: Re: day of week in Safari RSS
• From: James Housley <email@hidden>
• Date: Wed, 30 Nov 2005 08:58:02 -0500
• Delivered-to: email@hidden
• Delivered-to: email@hidden

On Nov 30, 2005, at 8:19 AM, Mark Pilgrim wrote:

On 11/30/05, Ilan Volow <email@hidden> wrote:

let $date := replace($date, ".*?,?\W*(\d+)\W*(\w+)\W*(\d+)\W*(\d {2}:\d
{2}:\d{2})\W*(-|\+)(\d{1,2})(\d{2}$)", concat("$3-", $month, "-$1T$4
$50$6:$7"))

FWIW, the feed validator also uses regular expressions to validate RFC
(2)822-style dates.  Not sure why any client would want to be this
strict, but since Safari/WebCore is currently being too strict, the
following regular expression could be viewed as an improvement.  It
also has the benefit of being well unit-tested.

From http://cvs.sourceforge.net/viewcvs.py/feedvalidator/ feedvalidator/src/feedvalidator/validators.py?view=markup

class rfc822(text):
rfc822_re = re.compile("(((Mon)|(Tue)|(Wed)|(Thu)|(Fri)|(Sat)| (Sun)), *)?" +
"\d\d? +((Jan)|(Feb)|(Mar)|(Apr)|(May)|(Jun)|(Jul)|(Aug)|(Sep)| (Oct)|" +
"(Nov)|(Dec)) +\d\d(\d\d)? +\d\d:\d\d(:\d\d)? +(([+-]?\d\d\d \d)|" +
"(UT)|(GMT)|(EST)|(EDT)|(CST)|(CDT)|(MST)|(MDT)|(PST)|(PDT)|\w)$")
def validate(self):
if not self.rfc822_re.match(self.value):
self.log(InvalidRFC2822Date({"parent":self.parent.name,
"element":self.name, "value":self.value}))
else:
self.log(ValidRFC2822Date({"parent":self.parent.name,
"element":self.name, "value":self.value}))

Jim

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