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himalaya-process.el
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;;; himalaya-process.el --- Process management of email client Himalaya CLI -*- lexical-binding: t -*-
;; Copyright (C) 2021 Dante Catalfamo
;; Copyright (C) 2022-2024 soywod <[email protected]>
;; Author: Dante Catalfamo
;; soywod <[email protected]>
;; Maintainer: soywod <[email protected]>
;; Dante Catalfamo
;; Version: 1.0
;; Package-Requires: ((emacs "27.1"))
;; URL: https://github.com/dantecatalfamo/himalaya-emacs
;; Keywords: mail comm
;; This file is not part of GNU Emacs
;; 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 <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Interface for the email client Himalaya CLI
;; <https://github.com/soywod/himalaya>
;;; Code:
(defun himalaya--clear-io-buffers ()
(with-current-buffer (get-buffer-create "*Himalaya stdout*")
(let ((inhibit-read-only t)) (erase-buffer)))
(with-current-buffer (get-buffer-create "*Himalaya stderr*")
(let ((inhibit-read-only t)) (erase-buffer))))
(defun himalaya--run (callback input &rest args)
"Asynchronously run Himalaya CLI with ARGS. CALLBACK is called with
stdout string when Himalaya CLI exits. INPUT is sent to stdin if not
nil. Signals a Lisp error and displays the output on non-zero exit."
(himalaya--clear-io-buffers)
(let* ((args (list (when himalaya-config-path (list "-c" himalaya-config-path)) "-o" "json" args))
(command (cons himalaya-executable (flatten-list args)))
(sentinel (lambda (process event) (himalaya--run-sentinel process callback)))
(process (make-process
:name "himalaya"
:buffer (get-buffer-create "*Himalaya stdout*")
:stderr (get-buffer-create "*Himalaya stderr*")
:connection-type 'pipe
:command command
:sentinel sentinel)))
(when input
(process-send-string process input)
(process-send-eof process))))
(defun himalaya--run-sentinel (process callback)
"Sentinel function for himalaya--async-run make-process."
(when (eq (process-status process) 'exit)
(message nil)
(unless (eq 0 (process-exit-status process))
(display-buffer "*Himalaya stderr*")
(error "Himalaya exited with a non-zero status"))
(funcall callback (with-current-buffer (process-buffer process) (json-parse-string (buffer-string) :object-type 'plist :array-type 'list)))))
(defun himalaya--run-blocking (&rest args)
"Blocking version of 'himalaya--run'."
(himalaya--clear-io-buffers)
(with-temp-buffer
(let* ((args (list (when himalaya-config-path (list "-c" himalaya-config-path)) "-o" "json" args))
(exit-status (apply #'call-process himalaya-executable nil t nil (flatten-list args)))
(output (buffer-string)))
(unless (eq 0 exit-status)
(with-current-buffer-window "*Himalaya stderr*" nil nil (insert output))
(error "Himalaya exited with a non-zero status"))
(json-parse-string output :object-type 'plist :array-type 'list))))
(provide 'himalaya-process)
;;; himalaya-process.el ends here