X-Git-Url: http://git.hcoop.net/bpt/emacs.git/blobdiff_plain/142e26a72e9b8bbbec23c6bf7234e9f2544b5f89..7400048f602459209e89da4680ed9cc351ace4ee:/lisp/battery.el diff --git a/lisp/battery.el b/lisp/battery.el index 22b09e15e8..9afe9de7b9 100644 --- a/lisp/battery.el +++ b/lisp/battery.el @@ -1,7 +1,6 @@ ;;; 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 @@ -47,6 +46,10 @@ ((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 @@ -56,7 +59,7 @@ 'battery-pmset) ((eq system-type 'windows-nt) 'w32-battery-status)) - "*Function for getting battery status information. + "Function for getting battery status information. The function has to return an alist of conversion definitions. Its cons cells are of the form @@ -70,11 +73,13 @@ introduced by a `%' character in a control string." (defcustom battery-echo-area-format (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)") (battery-status-function "Power %L, battery %B (%p%% load, remaining time %t)")) - "*Control string formatting the string to display in the echo area. + "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 @@ -102,7 +107,7 @@ string are substituted as defined by the current value of the variable "[%b%p%%,%d°C]") (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 @@ -122,18 +127,18 @@ 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) @@ -276,7 +281,7 @@ 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: @@ -390,6 +395,85 @@ 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 () @@ -468,5 +552,4 @@ MATCH-NUM in the match. Otherwise, return nil." (provide 'battery) -;; arch-tag: 65916f50-4754-4b6b-ac21-0b510f545a37 ;;; battery.el ends here