;;; battery.el --- display battery status information -*- coding: iso-8859-1 -*-
-;; Copyright (C) 1997-1998, 2000-2011 Free Software Foundation, Inc.
+;; Copyright (C) 1997-1998, 2000-2013 Free Software Foundation, Inc.
;; Author: Ralph Schleicher <rs@nunatak.allgaeu.org>
;; Keywords: hardware
;;; Code:
(require 'timer)
-(eval-when-compile (require 'cl))
-
+(eval-when-compile (require 'cl-lib))
\f
(defgroup battery nil
"Display battery status information."
:prefix "battery-"
:group 'hardware)
+;; Either BATn or yeeloong-bat, basically.
+(defconst battery--linux-sysfs-regexp "[bB][aA][tT][0-9]?$")
+
(defcustom battery-status-function
(cond ((and (eq system-type 'gnu/linux)
(file-readable-p "/proc/apm"))
'battery-linux-proc-acpi)
((and (eq system-type 'gnu/linux)
(file-directory-p "/sys/class/power_supply/")
- (directory-files "/sys/class/power_supply/" nil "BAT[0-9]$"))
+ (directory-files "/sys/class/power_supply/" nil
+ battery--linux-sysfs-regexp))
'battery-linux-sysfs)
((and (eq system-type 'darwin)
(condition-case nil
(> (buffer-size) 0)))
(error nil)))
'battery-pmset)
- ((eq system-type 'windows-nt)
+ ((fboundp 'w32-battery-status)
'w32-battery-status))
"Function for getting battery status information.
The function has to return an alist of conversion definitions.
(cond ((eq battery-status-function 'battery-linux-proc-acpi)
"Power %L, battery %B at %r (%p%% load, remaining time %t)")
((eq battery-status-function 'battery-linux-sysfs)
- "Power %L, battery %B (%p%% load)")
+ "Power %L, battery %B (%p%% load, remaining time %t)")
((eq battery-status-function 'battery-pmset)
"%L power, battery %B (%p%% load, remaining time %t)")
(battery-status-function
(defcustom battery-mode-line-limit 100
"Percentage of full battery load below which display battery status"
+ :version "24.1"
:type 'integer
:group 'battery)
;;;###autoload
(define-minor-mode display-battery-mode
- "Display battery status information in the mode line.
-The text being displayed in the mode line is controlled by the variables
+ "Toggle battery status display in mode line (Display Battery mode).
+With a prefix argument ARG, enable Display Battery mode if ARG is
+positive, and disable it otherwise. If called from Lisp, enable
+the mode if ARG is omitted or nil.
+
+The text displayed in the mode line is controlled by
`battery-mode-line-format' and `battery-status-function'.
-The mode line will be updated automatically every `battery-update-interval'
+The mode line is be updated every `battery-update-interval'
seconds."
:global t :group 'battery
(setq battery-mode-line-string "")
"Regular expression matching contents of `/proc/apm'.")
(defun battery-linux-proc-apm ()
- "Get APM status information from Linux kernel.
+ "Get APM status information from Linux (the kernel).
This function works only with the new `/proc/apm' format introduced
in Linux version 1.3.58.
;;; `/proc/acpi/' interface for Linux.
(defun battery-linux-proc-acpi ()
- "Get ACPI status information from Linux kernel.
+ "Get ACPI status information from Linux (the kernel).
This function works only with the `/proc/acpi/' format introduced
in Linux version 2.4.20 and 2.6.0.
(setq charging-state (match-string 1)))
(when (re-search-forward "present rate: +\\([0-9]+\\) \\(m[AW]\\)$"
nil t)
- (setq rate (+ (or rate 0) (string-to-number (match-string 1)))
- rate-type (or (and rate-type
+ (setq rate (+ (or rate 0) (string-to-number (match-string 1))))
+ (when (> rate 0)
+ (setq rate-type (or (and rate-type
(if (string= rate-type (match-string 2))
rate-type
(error
"Inconsistent rate types (%s vs. %s)"
rate-type (match-string 2))))
- (match-string 2))))
+ (match-string 2)))))
(when (re-search-forward "remaining capacity: +\\([0-9]+\\) m[AW]h$"
nil t)
(setq capacity
(when (re-search-forward "present: +yes$" nil t)
(when (re-search-forward "design capacity: +\\([0-9]+\\) m[AW]h$"
nil t)
- (incf design-capacity (string-to-number (match-string 1))))
+ (cl-incf design-capacity (string-to-number (match-string 1))))
(when (re-search-forward "last full capacity: +\\([0-9]+\\) m[AW]h$"
nil t)
- (incf last-full-capacity (string-to-number (match-string 1))))
+ (cl-incf last-full-capacity (string-to-number (match-string 1))))
(when (re-search-forward
"design capacity warning: +\\([0-9]+\\) m[AW]h$" nil t)
- (incf warn (string-to-number (match-string 1))))
+ (cl-incf warn (string-to-number (match-string 1))))
(when (re-search-forward "design capacity low: +\\([0-9]+\\) m[AW]h$"
nil t)
- (incf low (string-to-number (match-string 1)))))))
+ (cl-incf low (string-to-number (match-string 1)))))))
(setq full-capacity (if (> last-full-capacity 0)
last-full-capacity design-capacity))
(and capacity rate
The following %-sequences are provided:
%c Current capacity (mAh or mWh)
+%r Current rate
%B Battery status (verbose)
+%d Temperature (in degrees Celsius)
%p Battery load percentage
-%L AC line status (verbose)"
- (let (charging-state
+%L AC line status (verbose)
+%m Remaining time (to charge or discharge) in minutes
+%h Remaining time (to charge or discharge) in hours
+%t Remaining time (to charge or discharge) in the form `h:min'"
+ (let (charging-state rate temperature hours
(charge-full 0.0)
(charge-now 0.0)
(energy-full 0.0)
(with-temp-buffer
(dolist (dir (ignore-errors
(directory-files
- "/sys/class/power_supply/" t "BAT[0-9]$")))
+ "/sys/class/power_supply/" t
+ battery--linux-sysfs-regexp)))
(erase-buffer)
(ignore-errors (insert-file-contents
(expand-file-name "uevent" dir)))
(and (re-search-forward "POWER_SUPPLY_STATUS=\\(.*\\)$" nil t)
(member charging-state '("Unknown" "Full" nil))
(setq charging-state (match-string 1)))
+ (when (re-search-forward
+ "POWER_SUPPLY_\\(CURRENT\\|POWER\\)_NOW=\\([0-9]*\\)$"
+ nil t)
+ (setq rate (float (string-to-number (match-string 2)))))
+ (when (re-search-forward "POWER_SUPPLY_TEMP=\\([0-9]*\\)$" nil t)
+ (setq temperature (match-string 1)))
(let (full-string now-string)
;; Sysfs may list either charge (mAh) or energy (mWh).
;; Keep track of both, and choose which to report later.
(setq energy-full (+ energy-full
(string-to-number full-string))
energy-now (+ energy-now
- (string-to-number now-string)))))))))
+ (string-to-number now-string))))))
+ (goto-char (point-min))
+ (when (and energy-now rate (not (zerop rate))
+ (re-search-forward
+ "POWER_SUPPLY_VOLTAGE_NOW=\\([0-9]*\\)$" nil t))
+ (let ((remaining (if (string= charging-state "Discharging")
+ energy-now
+ (- energy-full energy-now))))
+ (setq hours (/ (/ (* remaining (string-to-number
+ (match-string 1)))
+ rate)
+ 10000000.0)))))))
(list (cons ?c (cond ((or (> charge-full 0) (> charge-now 0))
(number-to-string charge-now))
((or (> energy-full 0) (> energy-now 0))
(number-to-string energy-now))
(t "N/A")))
+ (cons ?r (if rate (format "%.1f" (/ rate 1000000.0)) "N/A"))
+ (cons ?m (if hours (format "%d" (* hours 60)) "N/A"))
+ (cons ?h (if hours (format "%d" hours) "N/A"))
+ (cons ?t (if hours
+ (format "%d:%02d" hours (* (- hours (floor hours)) 60))
+ "N/A"))
+ (cons ?d (or temperature "N/A"))
(cons ?B (or charging-state "N/A"))
- (cons ?p (cond ((> charge-full 0)
+ (cons ?p (cond ((and (> charge-full 0) (> charge-now 0))
(format "%.1f"
(/ (* 100 charge-now) charge-full)))
((> energy-full 0)
"AC"
"BAT")
"N/A")))))
-
-
\f
;;; `pmset' interface for Darwin (OS X).