X-Git-Url: http://git.hcoop.net/bpt/emacs.git/blobdiff_plain/d02fe47dd3be7310d1bfd6e802d1fac2ea5f5e9d..52bedd34385bf6434d60d884b306e5883fb656d9:/lisp/battery.el diff --git a/lisp/battery.el b/lisp/battery.el index 0fff947fc7..3b245ed644 100644 --- a/lisp/battery.el +++ b/lisp/battery.el @@ -1,17 +1,16 @@ ;;; battery.el --- display battery status information -*- coding: iso-8859-1 -*- -;; Copyright (C) 1997, 1998, 2000, 2001, 2002, 2003, 2004, -;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc. +;; Copyright (C) 1997-1998, 2000-2011 Free Software Foundation, Inc. ;; Author: Ralph Schleicher ;; Keywords: hardware ;; This file is part of GNU Emacs. -;; GNU Emacs is free software; you can redistribute it and/or modify +;; GNU Emacs 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, or (at your option) -;; any later version. +;; the Free Software Foundation, either version 3 of the License, or +;; (at your option) any later version. ;; GNU Emacs is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -19,16 +18,15 @@ ;; GNU General Public License for more details. ;; You should have received a copy of the GNU General Public License -;; along with GNU Emacs; see the file COPYING. If not, write to the -;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, -;; Boston, MA 02110-1301, USA. +;; along with GNU Emacs. If not, see . ;;; Commentary: -;; There is at present support for GNU/Linux and OS X. This library -;; supports both the `/proc/apm' file format of Linux version 1.3.58 -;; or newer and the `/proc/acpi/' directory structure of Linux 2.4.20 -;; and 2.6. Darwin (OS X) is supported by using the `pmset' program. +;; There is at present support for GNU/Linux, OS X and Windows. This +;; library supports both the `/proc/apm' file format of Linux version +;; 1.3.58 or newer and the `/proc/acpi/' directory structure of Linux +;; 2.4.20 and 2.6. Darwin (OS X) is supported by using the `pmset' +;; program. Windows is supported by the GetSystemPowerStatus API call. ;;; Code: @@ -48,14 +46,20 @@ ((and (eq system-type 'gnu/linux) (file-directory-p "/proc/acpi/battery")) '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]$")) + 'battery-linux-sysfs) ((and (eq system-type 'darwin) (condition-case nil (with-temp-buffer (and (eq (call-process "pmset" nil t nil "-g" "ps") 0) (> (buffer-size) 0))) (error nil))) - 'battery-pmset)) - "*Function for getting battery status information. + 'battery-pmset) + ((eq system-type 'windows-nt) + 'w32-battery-status)) + "Function for getting battery status information. The function has to return an alist of conversion definitions. Its cons cells are of the form @@ -67,13 +71,15 @@ introduced by a `%' character in a control string." :group 'battery) (defcustom battery-echo-area-format - (cond ((eq battery-status-function 'battery-linux-proc-apm) - "Power %L, battery %B (%p%% load, remaining time %t)") - ((eq battery-status-function 'battery-linux-proc-acpi) + (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)") ((eq battery-status-function 'battery-pmset) - "%L power, battery %B (%p%% load, remaining time %t)")) - "*Control string formatting the string to display in the echo area. + "%L power, battery %B (%p%% load, remaining time %t)") + (battery-status-function + "Power %L, battery %B (%p%% load, remaining time %t)")) + "Control string formatting the string to display in the echo area. Ordinary characters in the control string are printed as-is, while conversion specifications introduced by a `%' character in the control string are substituted as defined by the current value of the variable @@ -96,14 +102,17 @@ string are substituted as defined by the current value of the variable "String to display in the mode line.") ;;;###autoload (put 'battery-mode-line-string 'risky-local-variable t) +(defcustom battery-mode-line-limit 100 + "Percentage of full battery load below which display battery status" + :type 'integer + :group 'battery) + (defcustom battery-mode-line-format - (cond ((eq battery-status-function 'battery-linux-proc-apm) - "[%b%p%%]") - ((eq battery-status-function 'battery-linux-proc-acpi) + (cond ((eq battery-status-function 'battery-linux-proc-acpi) "[%b%p%%,%d°C]") - ((eq battery-status-function 'battery-pmset) + (battery-status-function "[%b%p%%]")) - "*Control string formatting the string to display in the mode line. + "Control string formatting the string to display in the mode line. Ordinary characters in the control string are printed as-is, while conversion specifications introduced by a `%' character in the control string are substituted as defined by the current value of the variable @@ -123,18 +132,18 @@ string are substituted as defined by the current value of the variable :group 'battery) (defcustom battery-update-interval 60 - "*Seconds after which the battery status will be updated." + "Seconds after which the battery status will be updated." :type 'integer :group 'battery) (defcustom battery-load-low 25 - "*Upper bound of low battery load percentage. + "Upper bound of low battery load percentage. A battery load percentage below this number is considered low." :type 'integer :group 'battery) (defcustom battery-load-critical 10 - "*Upper bound of critical battery load percentage. + "Upper bound of critical battery load percentage. A battery load percentage below this number is considered critical." :type 'integer :group 'battery) @@ -155,22 +164,29 @@ The text being displayed in the echo area is controlled by the variables ;;;###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 "") (or global-mode-string (setq global-mode-string '(""))) (and battery-update-timer (cancel-timer battery-update-timer)) - (if (not display-battery-mode) - (setq global-mode-string - (delq 'battery-mode-line-string global-mode-string)) - (add-to-list 'global-mode-string 'battery-mode-line-string t) - (setq battery-update-timer (run-at-time nil battery-update-interval - 'battery-update-handler)) - (battery-update))) + (if (and battery-status-function battery-mode-line-format) + (if (not display-battery-mode) + (setq global-mode-string + (delq 'battery-mode-line-string global-mode-string)) + (add-to-list 'global-mode-string 'battery-mode-line-string t) + (setq battery-update-timer (run-at-time nil battery-update-interval + 'battery-update-handler)) + (battery-update)) + (message "Battery status not available") + (setq display-battery-mode nil))) (defun battery-update-handler () (battery-update) @@ -178,16 +194,21 @@ seconds." (defun battery-update () "Update battery status information in the mode line." - (setq battery-mode-line-string - (propertize (if (and battery-mode-line-format - battery-status-function) - (battery-format - battery-mode-line-format - (funcall battery-status-function)) - "") - 'help-echo "Battery status information")) + (let ((data (and battery-status-function (funcall battery-status-function)))) + (setq battery-mode-line-string + (propertize (if (and battery-mode-line-format + (<= (car (read-from-string (cdr (assq ?p data)))) + battery-mode-line-limit)) + (battery-format + battery-mode-line-format + data) + "") + 'face + (and (<= (car (read-from-string (cdr (assq ?p data)))) + battery-load-critical) + 'error) + 'help-echo "Battery status information"))) (force-mode-line-update)) - ;;; `/proc/apm' interface for Linux. @@ -277,7 +298,7 @@ The following %-sequences are provided: (defun battery-linux-proc-acpi () "Get ACPI status information from Linux kernel. -This function works only with the new `/proc/acpi/' format introduced +This function works only with the `/proc/acpi/' format introduced in Linux version 2.4.20 and 2.6.0. The following %-sequences are provided: @@ -391,6 +412,85 @@ The following %-sequences are provided: "N/A"))))) +;;; `/sys/class/power_supply/BATN' interface for Linux. + +(defun battery-linux-sysfs () + "Get ACPI status information from Linux kernel. +This function works only with the new `/sys/class/power_supply/' +format introduced in Linux version 2.4.25. + +The following %-sequences are provided: +%c Current capacity (mAh or mWh) +%B Battery status (verbose) +%p Battery load percentage +%L AC line status (verbose)" + (let (charging-state + (charge-full 0.0) + (charge-now 0.0) + (energy-full 0.0) + (energy-now 0.0)) + ;; SysFS provides information about each battery present in the + ;; system in a separate subdirectory. We are going to merge the + ;; available information together. + (with-temp-buffer + (dolist (dir (ignore-errors + (directory-files + "/sys/class/power_supply/" t "BAT[0-9]$"))) + (erase-buffer) + (ignore-errors (insert-file-contents + (expand-file-name "uevent" dir))) + (when (re-search-forward "POWER_SUPPLY_PRESENT=1$" nil t) + (goto-char (point-min)) + (and (re-search-forward "POWER_SUPPLY_STATUS=\\(.*\\)$" nil t) + (member charging-state '("Unknown" "Full" nil)) + (setq charging-state (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. + (cond ((and (re-search-forward + "POWER_SUPPLY_CHARGE_FULL=\\([0-9]*\\)$" nil t) + (setq full-string (match-string 1)) + (re-search-forward + "POWER_SUPPLY_CHARGE_NOW=\\([0-9]*\\)$" nil t) + (setq now-string (match-string 1))) + (setq charge-full (+ charge-full + (string-to-number full-string)) + charge-now (+ charge-now + (string-to-number now-string)))) + ((and (re-search-forward + "POWER_SUPPLY_ENERGY_FULL=\\([0-9]*\\)$" nil t) + (setq full-string (match-string 1)) + (re-search-forward + "POWER_SUPPLY_ENERGY_NOW=\\([0-9]*\\)$" nil t) + (setq now-string (match-string 1))) + (setq energy-full (+ energy-full + (string-to-number full-string)) + energy-now (+ energy-now + (string-to-number now-string))))))))) + (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 ?B (or charging-state "N/A")) + (cons ?p (cond ((> charge-full 0) + (format "%.1f" + (/ (* 100 charge-now) charge-full))) + ((> energy-full 0) + (format "%.1f" + (/ (* 100 energy-now) energy-full))) + (t "N/A"))) + (cons ?L (if (file-readable-p "/sys/class/power_supply/AC/online") + (if (battery-search-for-one-match-in-files + (list "/sys/class/power_supply/AC/online" + "/sys/class/power_supply/ACAD/online") + "1" 0) + "AC" + "BAT") + "N/A"))))) + + + ;;; `pmset' interface for Darwin (OS X). (defun battery-pmset () @@ -469,5 +569,4 @@ MATCH-NUM in the match. Otherwise, return nil." (provide 'battery) -;; arch-tag: 65916f50-4754-4b6b-ac21-0b510f545a37 ;;; battery.el ends here