From: Matt Price <moptop99@gmail.com>
To: Thomas Plass <thunk2@arcor.de>
Cc: Org Mode <emacs-orgmode@gnu.org>
Subject: Re: parsing time strings from properties
Date: Sun, 22 Sep 2019 13:18:36 -0400 [thread overview]
Message-ID: <CAN_Dec_2abTDuq=6PRq8jkFDxFJtVDqHNHoP=Q8C-a-yH8BBsw@mail.gmail.com> (raw)
In-Reply-To: <23943.18598.271616.396497@AGAME7.local>
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many thanks to both of you. Yours was very interesting to read, Thomas, but
ts makes it quite a bit easier to write:
(defun o-l-date-to-timestamp (date)
"use ts.el date parse functions return an ISO-compatible
timestamp for transmission to Canvas via API. DATE is a string,
usually of the form `2019-09-26`, but optionally including a full time."
(ts-format "%Y-%m-%dT%H:%M:%S%:z" (ts-parse-fill 'end date )))
I'm quite looking forward to using dash, s, ts, kv, etc to simplify my
often very obtuse legacy code.
On Sun, Sep 22, 2019 at 6:10 AM Thomas Plass <thunk2@arcor.de> wrote:
> Hi,
>
> Matt Price wrote at 16:27 on September 21, 2019:
> :
> : :DUE_AT: 2019-09-26
> :
> : ...
> :
> : I'm wondering though how hard
> : it would be to get the current time zone -- or the time zone that the
> course is taught in -- from
> : emacs, and construct the string from that value.
>
> This'll return the offset suffix (if that's what you want) when
> executed in your local time zone (presumably "-04:00"):
>
> (defun Price/local-time-offset-from-iso-date (y-m-d)
> (let* ((ymd (mapcar (lambda (s) (string-to-number s)) (split-string
> y-m-d "-")))
> (offsecs (nth 8
> (decode-time
> (apply #'encode-time
> (list 59 59 23 (nth 2 ymd) (nth 1 ymd) (nth
> 0 ymd)))))))
> (format "%s%02d:%02d"
> (if (> offsecs 0) "+" "-")
> (/ offsecs 3600)
> (% offsecs 3600))))
>
> On Unix, this'll always work. On Windows, it works most of the time,
> but may fail in the weeks around switches from and to daylight saving.
>
> Thomas
>
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prev parent reply other threads:[~2019-09-22 17:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-21 20:27 parsing time strings from properties Matt Price
2019-09-22 2:54 ` Adam Porter
2019-09-22 10:10 ` Thomas Plass
2019-09-22 17:18 ` Matt Price [this message]
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