Tom Willemse
298885434b
For some reason it appears that ‘alert-termux’ is added to the ‘load-path’ after ‘oni-termux’, so that when ‘oni-termux’ calls ‘require’ for ‘alert-termux’ it hasn’t been added to the ‘load-path’ yet and fails. When requiring the ‘battery’ library it seems to immediately try to read some information. Since Termux isn’t actually a linux distribution if fails with a "Permission Denied" error when trying to read ‘/sys/class/power_supply’. To prevent this from happening the ‘battery-status-function’ needs to be set before loading ‘battery’.
83 lines
2.6 KiB
EmacsLisp
83 lines
2.6 KiB
EmacsLisp
;;; oni-termux.el --- Termux-specific configuration -*- lexical-binding: t; -*-
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;; Copyright (C) 2019 Tom Willemse
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;; Author: Tom Willemse <tom@ryuslash.org>
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;; Keywords: local
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;; Version: 2019.1006.113112
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;; Package-Requires: (oni-alert alert-termux)
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Configuration specific to running in Termux.
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;; This configuration shows the battery power in the mode-line, since
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;; the devices running Emacs in Termux will most likely always have a
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;; battery.
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;;; Code:
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(require 'alert)
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;;(require 'alert-termux)
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(require 'json)
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(defun oni-termux--battery-status ()
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"Get battery status information using `termux-battery status'.
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The following %-sequences are provided:
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%h Health
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%p Percentage
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%L Plugged
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%B Status
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%d Temperature"
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(let ((info (with-temp-buffer
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(call-process "termux-battery-status" nil t)
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(goto-char (point-min))
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(json-read))))
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(list
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(cons ?h (alist-get 'health info "N/A"))
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(cons ?p (number-to-string (alist-get 'percentage info -1)))
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(cons ?P (alist-get 'plugged info "N/A"))
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(cons ?B (alist-get 'status info "N/A"))
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(cons ?t (number-to-string (alist-get 'temperature info -1))))))
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(defun oni-termux--load-alert-termux ()
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"Load ‘alert-termux’.
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This can’t be done by a require because it appears that
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‘alert-termux’ gets added to the load path and loaded after this
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library, so use this function in ‘after-init-hook’ instead."
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(load-library "alert-termux"))
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;; To keep the byte-compiler happy I use a `defvar' here.
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(defvar battery-status-function #'oni-termux--battery-status)
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;; The battery library needs to be loaded after the battery variables
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;; have been set, otherwise loading it will produce the error that
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;; access is denied to /sys/class/power_supply.
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(require 'battery)
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(setq battery-mode-line-format "%p%%")
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(setq alert-default-style 'termux)
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(add-hook 'after-init-hook #'oni-termux--load-alert-termux)
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(display-battery-mode)
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;;;###autoload(require 'oni-termux)
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(provide 'oni-termux)
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;;; oni-termux.el ends here
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