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fortune-cookie.el
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fortune-cookie.el
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;;; fortune-cookie.el --- Print a fortune in your scratch buffer.
;; Copyright (C) 2015 Andrew Schwartzmeyer
;; Author: Andrew Schwartzmeyer <andrew@schwartzmeyer.com>
;; Created: 09 Nov 2015
;; Version: 1.0
;; Package-Requires: ()
;; Keywords: fortune cowsay scratch startup
;; Homepage: https://github.com/andschwa/fortune-cookie
;; This program 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.
;; This program 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 this program. If not, see
;; <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This sets `initial-scratch-message' with an `emacs-lisp-mode'
;; commented output of a call to `fortune'.
;;
;; See README.md
;;; Code:
(require 'files)
(require 'simple)
(defgroup fortune-cookie nil
"Print a fortune in your scratch buffer."
:prefix "fortune-cookie-"
:group 'scratch)
(defcustom fortune-cookie-fortune-command (executable-find "fortune")
"Path to `fortune' command.
Defaults to the first on your path."
:type 'string
:group 'fortune-cookie)
(defcustom fortune-cookie-fortune-args nil
"Arguments passed to `fortune'."
:type '(repeat string)
:group 'fortune-cookie)
(defcustom fortune-cookie-cowsay-enable nil
"Pipes `fortune' through `cowsay' if true."
:type 'boolean
:group 'fortune-cookie)
(defcustom fortune-cookie-cowsay-command (executable-find "cowsay")
"Path to `cowsay' command.
Defaults to the first on your path."
:type 'string
:group 'fortune-cookie)
(defcustom fortune-cookie-cowsay-args nil
"Arguments passed to `cowsay'."
:type '(repeat string)
:group 'fortune-cookie)
(defcustom fortune-cookie-comment-start ";; "
"String prepended to each line of fortune.
The default assumes `emacs-lisp-mode'."
:type 'string
:group 'fortune-cookie)
(defcustom fortune-cookie-fortune-string nil
"String to use for fortune instead of calling the program."
:type 'string
:group 'fortune-cookie)
;;;###autoload
(defun fortune-cookie ()
"Get a fortune cookie (maybe with cowsay)."
(interactive)
(or fortune-cookie-fortune-string
fortune-cookie-fortune-command
(display-warning 'fortune-cookie "`fortune' program was not found" :error))
(when (and fortune-cookie-cowsay-enable
(not fortune-cookie-cowsay-command))
(display-warning
'fortune-cookie
"`cowsay' program was not found; disable this warning by"
"setting `fortune-cookie-cowsay-enable' to nil"))
(or fortune-cookie-cowsay-enable)
(let ((fortune (or fortune-cookie-fortune-string
(shell-command-to-string
(combine-and-quote-strings
(append (list fortune-cookie-fortune-command)
fortune-cookie-fortune-args))))))
(if (and fortune-cookie-cowsay-enable
fortune-cookie-cowsay-command)
(fortune-cowsay fortune t) fortune)))
(defun fortune-cowsay (str &optional skip-kill)
"Return STR wrapped in cowsay. If SKIP-KILL, do not add to kill ring."
(interactive "MWhat do you want to say? \nP")
(unless fortune-cookie-cowsay-command
(display-warning 'fortune-cookie "`cowsay' program was not found" :error))
(let ((cow (shell-command-to-string
(message (combine-and-quote-strings
(append (list "echo" str "|"
fortune-cookie-cowsay-command)
fortune-cookie-cowsay-args))))))
(unless skip-kill (kill-new cow)) (message "Copied cow to kill ring") cow))
;;;###autoload
(defun fortune-cookie-comment (arg prefix)
"Comment ARG with PREFIX.
ARG is the input string.
PREFIX is prepended to each line of ARG."
(interactive)
(mapconcat
(lambda (x) (concat prefix x))
(split-string arg "\n" t) "\n"))
;;;###autoload
(define-minor-mode fortune-cookie-mode
"Set `initial-scratch-message' to a commented fortune cookie."
:global
:group 'fortune-cookie
(setq initial-scratch-message
(concat (fortune-cookie-comment (fortune-cookie) fortune-cookie-comment-start) "\n\n")))
(provide 'fortune-cookie)
;;; fortune-cookie.el ends here