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(defpackage ๐ฐ๏ธ.bin
(:shadow :describe)
(:use :cl :opts)
(:import-from :uiop :quit)
(:import-from :local-time
:now :timestamp-subtimezone :+utc-zone+
:*default-timezone* :define-timezone)
(:import-from :klatre :format-dottime-offset)
(:import-from :๐ฐ๏ธ :โ)
(:export :๐))
(in-package :๐ฐ๏ธ.bin)
(declaim (optimize (safety 3)))
(opts:define-opts
(:name :help
:description "Print this help text"
:short #\h
:long "help")
(:name :dot-time
:description "Use pseudo dot-time format (implies -u)"
:short #\d
:long "dot-time")
(:name :utc
:description "Display time in UTC instead of local time"
:short #\u
:long "utc")
(:name :no-newline
:description "Don't print a trailing newline"
:short #\n
:long "no-newline"))
(defun make-slash-terminated (str)
(if (eq (char str (1- (length str))) #\/)
str
(concatenate 'string str "/")))
; TODO(sterni): upstream this into local-time
(defun setup-default-timezone ()
(let* ((tz (uiop:getenv "TZ"))
(tz-dir (uiop:getenv "TZDIR"))
(tz-file (if (and tz tz-dir)
(merge-pathnames
(pathname tz)
(pathname (make-slash-terminated tz-dir)))
(pathname "/etc/localtime"))))
(handler-case
(define-timezone *default-timezone* tz-file :load t)
(t () (setf *default-timezone* +utc-zone+)))))
(defun ๐ ()
(let ((ts (now)))
(multiple-value-bind (options free-args)
(handler-case (opts:get-opts)
; only handle subset of conditions that can happen here
(opts:unknown-option (c)
(format t "error: unknown option ~s~%" (opts:option c))
(quit 100)))
; check if we have any free args we don't know what to do with
(when (> (length free-args) 0)
(write-string "error: unexpected command line argument(s): ")
(loop for arg in free-args
do (progn (write-string arg) (write-char #\space)))
(write-char #\newline)
(quit 100))
; print help and exit
(when (getf options :help)
(opts:describe :usage-of "๐ฐ๏ธ")
(quit 0))
; reinit *default-timezone* as it is cached from compilation
(setup-default-timezone)
; dot-time implies UTC, naturally
(when (getf options :dot-time)
(setf (getf options :utc) t))
; print clock face
(format t "~A" (โ ts (if (getf options :utc)
local-time:+utc-zone+
local-time:*default-timezone*)))
; render dot-time offset if necessary
(when (getf options :dot-time)
(multiple-value-bind (offset-secs _dst _name)
(timestamp-subtimezone ts local-time:*default-timezone*)
(write-string
(format-dottime-offset (round (/ offset-secs 3600))))))
; write newline if necessary
(when (not (getf options :no-newline))
(write-char #\newline)))))
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