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;;; Copyright (c) 2022 Teddy Wing
;;;
;;; This file is part of Wajir.
;;;
;;; Wajir is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation, either version 3 of the License, or
;;; (at your option) any later version.
;;;
;;; Wajir is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with Wajir. If not, see <https://www.gnu.org/licenses/>.
(in-package :wajir)
(opts:define-opts
(:name :login
:description "Jira login email address"
:long "login"
:arg-parser #'identity
:meta-var "<login>")
(:name :token
:description "Jira API token"
:long "token"
:arg-parser #'identity
:meta-var "<token>")
(:name :endpoint
:description "Jira site URL host (e.g. example.atlassian.net)"
:long "endpoint"
:arg-parser #'identity
:meta-var "<endpoint>")
(:name :sendmail
:description "send email command"
:long "sendmail"
:arg-parser #'identity
:meta-var "<command>")
(:name :email-to
:description "recipient email address"
:long "email-to"
:arg-parser #'identity
:meta-var "<address>")
(:name :verbose
:description "print verbose output"
:short #\v
:long "verbose")
(:name :help
:description "print this help menu"
:short #\h
:long "help")
(:name :version
:description "show the program version"
:short #\V
:long "version"))
(defmacro when-option ((options option) &body body)
"When `option` is present in `options`, run `body`."
`(let ((value (getf ,options ,option)))
(when value
,@body)))
(defun exit-with-error (condition exit-code)
"Print the error associated with `condition` on standard error, then exit
with code `exit-code`."
(format *error-output* "error: ~a~%" condition)
(opts:exit exit-code))
(defun handle-option-error (condition)
"Handle errors related to command line options. Prints the error specified by
`condition` and exits with EX_USAGE."
(exit-with-error condition sysexits:+usage+))
(defmacro program-version ()
"Program version string"
(asdf:component-version (asdf:find-system :wajir)))
(defun parse-options ()
"Parse command line options."
(multiple-value-bind (options free-args)
(handler-bind
((opts:unknown-option #'handle-option-error)
(opts:missing-arg #'handle-option-error)
(opts:arg-parser-failed #'handle-option-error)
(opts:missing-required-option #'handle-option-error))
(opts:get-opts))
;; Help
(when-option (options :help)
(opts:describe
:usage-of "wajir"
:args "<JQL>")
(opts:exit sysexits:+usage+))
;; Version
(when-option (options :version)
(format t "~a~%" (program-version))
(opts:exit sysexits:+ok+))
;; Check required arguments
(let* ((required-opts '(:login :token :endpoint))
;; ((t . :login) (t . :token) (nil . :endpoint))
(opts-missing-p (mapcar
#'(lambda (opt)
(cons (null (getf options opt))
opt))
required-opts))
;; (:endpoint)
(missing-opts (mapcar
#'cdr
(remove-if-not
#'(lambda (missing-and-opt) (first missing-and-opt))
opts-missing-p))))
(when (not (null missing-opts))
(format
*error-output*
"error: missing required options: ~{`~(--~A~)'~^, ~}~%"
missing-opts)
(opts:exit sysexits:+usage+)))
;; If `sendmail` is given, `email-to` must be defined.
(when (not (null (getf options :sendmail)))
(when (null (getf options :email-to))
(format *error-output* "error: `--sendmail' requires `--email-to'~%")
(opts:exit sysexits:+usage+)))
;; Error if JQL is empty
(when (null free-args)
(format *error-output* "error: missing JQL~%")
(opts:exit sysexits:+usage+))
(make-instance 'config
:login (getf options :login)
:token (getf options :token)
:endpoint (getf options :endpoint)
:sendmail (getf options :sendmail)
:email-to (getf options :email-to)
:verbose (getf options :verbose)
:jql (first free-args))))
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