8418e01a84
This small tool prints the current time rounded to half-hour precision as an emoji clock face and exists. It can use both the local time zone and UTC. Additionally it supports a pseudo dot time format. Via fun.🕰️.lib we reexpose the internal library which allows conversion from LOCAL-TIME:TIMESTAMP to an emoji clock face — maybe we'll want to integrate this into //web/panettone? //fun/🕰️ is the spritual (and actual) successor to <https://github.com/sternenseemann/unicode_clock>. It likely only works in SBCL due to its heavy usage of unicode symbol names. Change-Id: I44204107a14f99b04b0c5290d88e8659f013f423 Reviewed-on: https://cl.tvl.fyi/c/depot/+/3164 Tested-by: BuildkiteCI Reviewed-by: tazjin <mail@tazj.in>
32 lines
1.2 KiB
Common Lisp
32 lines
1.2 KiB
Common Lisp
(defpackage 🕰️
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(:use :cl)
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(:import-from :local-time
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:timestamp-subtimezone :*default-timezone* :sec-of)
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(:export :⌚))
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(in-package :🕰️)
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(declaim (optimize (safety 3)))
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(defparameter *clock-emojis*
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(vector #\🕛 #\🕧 ; 00:00 - 00:30
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#\🕐 #\🕜 ; 01:00 - 01:30
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#\🕑 #\🕝 ; 00:00 - 00:30
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#\🕒 #\🕞 ; 00:00 - 00:30
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#\🕓 #\🕟 ; 00:00 - 00:30
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#\🕔 #\🕠 ; 00:00 - 00:30
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#\🕕 #\🕡 ; 00:00 - 00:30
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#\🕖 #\🕢 ; 00:00 - 00:30
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#\🕗 #\🕣 ; 00:00 - 00:30
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#\🕘 #\🕤 ; 00:00 - 00:30
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#\🕙 #\🕥 ; 00:00 - 00:30
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#\🕚 #\🕦)) ; 11:00 - 11:30
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(defun ⌚ (timestamp &optional (tz *default-timezone*))
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"Convert a LOCAL-TIME:TIMESTAMP into the nearest Unicode clock face.
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Use TZ (which defaults to LOCAL-TIME:*DEFAULT-TIMEZONE*) to determine
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the UTC offset to factor when determining the local clock face."
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(let* ((offset (multiple-value-bind (offset-secs _dst _name)
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(timestamp-subtimezone timestamp tz)
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offset-secs))
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(secs (+ (sec-of timestamp) offset)))
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(elt *clock-emojis* (mod (round (/ secs 1800)) 24))))
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