2008-03-25 21:50:45 +00:00
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;;; battery.el --- display battery status information -*- coding: iso-8859-1 -*-
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1997-06-22 20:08:32 +00:00
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2011-01-25 04:08:28 +00:00
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;; Copyright (C) 1997-1998, 2000-2011 Free Software Foundation, Inc.
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1997-06-22 20:08:32 +00:00
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2000-07-07 13:01:49 +00:00
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;; Author: Ralph Schleicher <rs@nunatak.allgaeu.org>
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1998-02-25 22:44:24 +00:00
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;; Keywords: hardware
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1997-06-22 20:08:32 +00:00
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1997-07-09 00:29:46 +00:00
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;; This file is part of GNU Emacs.
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1997-06-22 20:08:32 +00:00
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2008-05-06 08:06:51 +00:00
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;; GNU Emacs is free software: you can redistribute it and/or modify
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1997-06-22 20:08:32 +00:00
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;; it under the terms of the GNU General Public License as published by
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2008-05-06 08:06:51 +00:00
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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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1997-06-22 20:08:32 +00:00
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1997-07-09 00:29:46 +00:00
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;; GNU Emacs is distributed in the hope that it will be useful,
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1997-06-22 20:08:32 +00:00
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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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2008-05-06 08:06:51 +00:00
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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1997-06-22 20:08:32 +00:00
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;;; Commentary:
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2008-04-29 00:59:37 +00:00
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;; There is at present support for GNU/Linux, OS X and Windows. This
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;; library supports both the `/proc/apm' file format of Linux version
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;; 1.3.58 or newer and the `/proc/acpi/' directory structure of Linux
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;; 2.4.20 and 2.6. Darwin (OS X) is supported by using the `pmset'
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;; program. Windows is supported by the GetSystemPowerStatus API call.
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1997-06-22 20:08:32 +00:00
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;;; Code:
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(require 'timer)
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2004-09-18 21:33:44 +00:00
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(eval-when-compile (require 'cl))
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1997-06-22 20:08:32 +00:00
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1998-03-07 18:19:38 +00:00
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(defgroup battery nil
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"Display battery status information."
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:prefix "battery-"
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:group 'hardware)
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(defcustom battery-status-function
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1997-06-22 20:08:32 +00:00
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(cond ((and (eq system-type 'gnu/linux)
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(file-readable-p "/proc/apm"))
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2003-09-06 19:28:08 +00:00
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'battery-linux-proc-apm)
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((and (eq system-type 'gnu/linux)
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(file-directory-p "/proc/acpi/battery"))
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2005-07-05 08:14:42 +00:00
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'battery-linux-proc-acpi)
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2008-08-08 17:46:49 +00:00
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((and (eq system-type 'gnu/linux)
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(file-directory-p "/sys/class/power_supply/")
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(directory-files "/sys/class/power_supply/" nil "BAT[0-9]$"))
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'battery-linux-sysfs)
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2005-07-05 08:14:42 +00:00
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((and (eq system-type 'darwin)
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2006-11-05 13:22:30 +00:00
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(condition-case nil
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(with-temp-buffer
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2005-08-11 13:28:47 +00:00
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(and (eq (call-process "pmset" nil t nil "-g" "ps") 0)
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(> (buffer-size) 0)))
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(error nil)))
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2008-04-29 00:59:37 +00:00
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'battery-pmset)
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((eq system-type 'windows-nt)
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'w32-battery-status))
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2008-12-03 05:48:14 +00:00
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"Function for getting battery status information.
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2001-02-15 00:10:06 +00:00
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The function has to return an alist of conversion definitions.
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Its cons cells are of the form
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1997-06-22 20:08:32 +00:00
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(CONVERSION . REPLACEMENT-TEXT)
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CONVERSION is the character code of a \"conversion specification\"
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1998-03-07 18:19:38 +00:00
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introduced by a `%' character in a control string."
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2001-02-15 00:10:06 +00:00
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:type '(choice (const nil) function)
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1998-03-07 18:19:38 +00:00
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:group 'battery)
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1997-06-22 20:08:32 +00:00
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1998-03-07 18:19:38 +00:00
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(defcustom battery-echo-area-format
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2008-04-29 00:59:37 +00:00
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(cond ((eq battery-status-function 'battery-linux-proc-acpi)
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2005-07-05 08:14:42 +00:00
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"Power %L, battery %B at %r (%p%% load, remaining time %t)")
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2008-08-08 17:46:49 +00:00
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((eq battery-status-function 'battery-linux-sysfs)
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"Power %L, battery %B (%p%% load)")
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2005-07-05 08:14:42 +00:00
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((eq battery-status-function 'battery-pmset)
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2008-04-29 00:59:37 +00:00
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"%L power, battery %B (%p%% load, remaining time %t)")
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(battery-status-function
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"Power %L, battery %B (%p%% load, remaining time %t)"))
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2008-12-03 05:48:14 +00:00
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"Control string formatting the string to display in the echo area.
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1997-06-22 20:08:32 +00:00
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Ordinary characters in the control string are printed as-is, while
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conversion specifications introduced by a `%' character in the control
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string are substituted as defined by the current value of the variable
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2006-03-11 15:08:42 +00:00
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`battery-status-function'. Here are the ones generally available:
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%c Current capacity (mAh or mWh)
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%r Current rate of charge or discharge
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%B Battery status (verbose)
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%b Battery status: empty means high, `-' means low,
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`!' means critical, and `+' means charging
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%d Temperature (in degrees Celsius)
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%L AC line status (verbose)
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%p Battery load percentage
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%m Remaining time (to charge or discharge) in minutes
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%h Remaining time (to charge or discharge) in hours
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%t Remaining time (to charge or discharge) in the form `h:min'"
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1998-03-07 18:19:38 +00:00
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:type '(choice string (const nil))
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:group 'battery)
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1997-06-22 20:08:32 +00:00
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(defvar battery-mode-line-string nil
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"String to display in the mode line.")
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2004-12-27 16:40:50 +00:00
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;;;###autoload (put 'battery-mode-line-string 'risky-local-variable t)
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1997-06-22 20:08:32 +00:00
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1998-03-07 18:19:38 +00:00
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(defcustom battery-mode-line-format
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2008-04-29 00:59:37 +00:00
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(cond ((eq battery-status-function 'battery-linux-proc-acpi)
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2005-07-05 08:14:42 +00:00
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"[%b%p%%,%d<>C]")
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2008-04-29 00:59:37 +00:00
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(battery-status-function
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2005-07-05 08:14:42 +00:00
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"[%b%p%%]"))
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2008-12-03 05:48:14 +00:00
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"Control string formatting the string to display in the mode line.
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1997-06-22 20:08:32 +00:00
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Ordinary characters in the control string are printed as-is, while
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conversion specifications introduced by a `%' character in the control
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string are substituted as defined by the current value of the variable
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2006-03-11 15:08:42 +00:00
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`battery-status-function'. Here are the ones generally available:
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%c Current capacity (mAh or mWh)
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%r Current rate of charge or discharge
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%B Battery status (verbose)
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%b Battery status: empty means high, `-' means low,
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`!' means critical, and `+' means charging
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%d Temperature (in degrees Celsius)
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%L AC line status (verbose)
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%p Battery load percentage
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%m Remaining time (to charge or discharge) in minutes
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%h Remaining time (to charge or discharge) in hours
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%t Remaining time (to charge or discharge) in the form `h:min'"
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1998-03-07 18:19:38 +00:00
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:type '(choice string (const nil))
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:group 'battery)
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(defcustom battery-update-interval 60
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2008-12-03 05:48:14 +00:00
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"Seconds after which the battery status will be updated."
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1998-03-07 18:19:38 +00:00
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:type 'integer
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:group 'battery)
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1997-06-22 20:08:32 +00:00
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2005-07-05 08:14:42 +00:00
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(defcustom battery-load-low 25
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2008-12-03 05:48:14 +00:00
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"Upper bound of low battery load percentage.
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2005-07-05 08:14:42 +00:00
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A battery load percentage below this number is considered low."
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:type 'integer
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:group 'battery)
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(defcustom battery-load-critical 10
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2008-12-03 05:48:14 +00:00
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"Upper bound of critical battery load percentage.
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2005-07-05 08:14:42 +00:00
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A battery load percentage below this number is considered critical."
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:type 'integer
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:group 'battery)
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1997-06-22 20:08:32 +00:00
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(defvar battery-update-timer nil
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"Interval timer object.")
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1998-03-06 17:45:55 +00:00
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;;;###autoload
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1997-06-22 20:08:32 +00:00
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(defun battery ()
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"Display battery status information in the echo area.
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1999-12-14 10:19:59 +00:00
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The text being displayed in the echo area is controlled by the variables
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1997-06-22 20:08:32 +00:00
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`battery-echo-area-format' and `battery-status-function'."
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(interactive)
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(message "%s" (if (and battery-echo-area-format battery-status-function)
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(battery-format battery-echo-area-format
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(funcall battery-status-function))
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"Battery status not available")))
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1998-03-06 17:45:55 +00:00
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;;;###autoload
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2005-01-04 21:15:09 +00:00
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(define-minor-mode display-battery-mode
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1997-06-22 20:08:32 +00:00
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"Display battery status information in the mode line.
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2000-10-10 01:36:36 +00:00
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The text being displayed in the mode line is controlled by the variables
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1997-06-22 20:08:32 +00:00
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`battery-mode-line-format' and `battery-status-function'.
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The mode line will be updated automatically every `battery-update-interval'
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seconds."
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2005-04-04 08:53:15 +00:00
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:global t :group 'battery
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1997-06-22 20:08:32 +00:00
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(setq battery-mode-line-string "")
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(or global-mode-string (setq global-mode-string '("")))
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(and battery-update-timer (cancel-timer battery-update-timer))
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2005-01-04 21:15:09 +00:00
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(if (not display-battery-mode)
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(setq global-mode-string
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(delq 'battery-mode-line-string global-mode-string))
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(add-to-list 'global-mode-string 'battery-mode-line-string t)
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(setq battery-update-timer (run-at-time nil battery-update-interval
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'battery-update-handler))
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(battery-update)))
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1997-06-22 20:08:32 +00:00
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(defun battery-update-handler ()
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(battery-update)
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(sit-for 0))
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(defun battery-update ()
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"Update battery status information in the mode line."
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2004-12-27 16:40:50 +00:00
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(setq battery-mode-line-string
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(propertize (if (and battery-mode-line-format
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battery-status-function)
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(battery-format
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battery-mode-line-format
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(funcall battery-status-function))
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"")
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'help-echo "Battery status information"))
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1997-06-22 20:08:32 +00:00
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(force-mode-line-update))
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;;; `/proc/apm' interface for Linux.
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(defconst battery-linux-proc-apm-regexp
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(concat "^\\([^ ]+\\)" ; Driver version.
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" \\([^ ]+\\)" ; APM BIOS version.
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" 0x\\([0-9a-f]+\\)" ; APM BIOS flags.
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" 0x\\([0-9a-f]+\\)" ; AC line status.
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" 0x\\([0-9a-f]+\\)" ; Battery status.
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" 0x\\([0-9a-f]+\\)" ; Battery flags.
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1998-02-25 22:44:24 +00:00
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" \\(-?[0-9]+\\)%" ; Load percentage.
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" \\(-?[0-9]+\\)" ; Remaining time.
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1997-06-22 20:08:32 +00:00
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" \\(.*\\)" ; Time unit.
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"$")
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"Regular expression matching contents of `/proc/apm'.")
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(defun battery-linux-proc-apm ()
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"Get APM status information from Linux kernel.
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This function works only with the new `/proc/apm' format introduced
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in Linux version 1.3.58.
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The following %-sequences are provided:
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%v Linux driver version
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%V APM BIOS version
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%I APM BIOS status (verbose)
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%L AC line status (verbose)
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%B Battery status (verbose)
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%b Battery status, empty means high, `-' means low,
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`!' means critical, and `+' means charging
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2005-07-01 11:03:19 +00:00
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%p Battery load percentage
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2006-03-11 15:08:42 +00:00
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%s Remaining time (to charge or discharge) in seconds
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%m Remaining time (to charge or discharge) in minutes
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%h Remaining time (to charge or discharge) in hours
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%t Remaining time (to charge or discharge) in the form `h:min'"
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1997-06-22 20:08:32 +00:00
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(let (driver-version bios-version bios-interface line-status
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battery-status battery-status-symbol load-percentage
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2005-07-01 11:03:19 +00:00
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seconds minutes hours remaining-time tem)
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(with-temp-buffer
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(ignore-errors (insert-file-contents "/proc/apm"))
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(when (re-search-forward battery-linux-proc-apm-regexp)
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(setq driver-version (match-string 1))
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(setq bios-version (match-string 2))
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(setq tem (string-to-number (match-string 3) 16))
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(if (not (logand tem 2))
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(setq bios-interface "not supported")
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(setq bios-interface "enabled")
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(cond ((logand tem 16) (setq bios-interface "disabled"))
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((logand tem 32) (setq bios-interface "disengaged")))
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(setq tem (string-to-number (match-string 4) 16))
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(cond ((= tem 0) (setq line-status "off-line"))
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((= tem 1) (setq line-status "on-line"))
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((= tem 2) (setq line-status "on backup")))
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(setq tem (string-to-number (match-string 6) 16))
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(if (= tem 255)
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(setq battery-status "N/A")
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(setq tem (string-to-number (match-string 5) 16))
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(cond ((= tem 0) (setq battery-status "high"
|
|
|
|
|
battery-status-symbol ""))
|
|
|
|
|
((= tem 1) (setq battery-status "low"
|
|
|
|
|
battery-status-symbol "-"))
|
|
|
|
|
((= tem 2) (setq battery-status "critical"
|
|
|
|
|
battery-status-symbol "!"))
|
|
|
|
|
((= tem 3) (setq battery-status "charging"
|
|
|
|
|
battery-status-symbol "+")))
|
|
|
|
|
(setq load-percentage (match-string 7))
|
|
|
|
|
(setq seconds (string-to-number (match-string 8)))
|
|
|
|
|
(and (string-equal (match-string 9) "min")
|
|
|
|
|
(setq seconds (* 60 seconds)))
|
|
|
|
|
(setq minutes (/ seconds 60)
|
|
|
|
|
hours (/ seconds 3600))
|
|
|
|
|
(setq remaining-time
|
|
|
|
|
(format "%d:%02d" hours (- minutes (* 60 hours))))))))
|
1998-02-25 22:44:24 +00:00
|
|
|
|
(list (cons ?v (or driver-version "N/A"))
|
|
|
|
|
(cons ?V (or bios-version "N/A"))
|
|
|
|
|
(cons ?I (or bios-interface "N/A"))
|
|
|
|
|
(cons ?L (or line-status "N/A"))
|
|
|
|
|
(cons ?B (or battery-status "N/A"))
|
|
|
|
|
(cons ?b (or battery-status-symbol ""))
|
|
|
|
|
(cons ?p (or load-percentage "N/A"))
|
|
|
|
|
(cons ?s (or (and seconds (number-to-string seconds)) "N/A"))
|
|
|
|
|
(cons ?m (or (and minutes (number-to-string minutes)) "N/A"))
|
|
|
|
|
(cons ?h (or (and hours (number-to-string hours)) "N/A"))
|
|
|
|
|
(cons ?t (or remaining-time "N/A")))))
|
1997-06-22 20:08:32 +00:00
|
|
|
|
|
2003-09-06 19:28:08 +00:00
|
|
|
|
|
|
|
|
|
;;; `/proc/acpi/' interface for Linux.
|
|
|
|
|
|
|
|
|
|
(defun battery-linux-proc-acpi ()
|
|
|
|
|
"Get ACPI status information from Linux kernel.
|
2008-08-08 17:46:49 +00:00
|
|
|
|
This function works only with the `/proc/acpi/' format introduced
|
2003-09-06 19:28:08 +00:00
|
|
|
|
in Linux version 2.4.20 and 2.6.0.
|
|
|
|
|
|
|
|
|
|
The following %-sequences are provided:
|
|
|
|
|
%c Current capacity (mAh)
|
2005-07-01 11:03:19 +00:00
|
|
|
|
%r Current rate
|
2003-09-06 19:28:08 +00:00
|
|
|
|
%B Battery status (verbose)
|
|
|
|
|
%b Battery status, empty means high, `-' means low,
|
|
|
|
|
`!' means critical, and `+' means charging
|
|
|
|
|
%d Temperature (in degrees Celsius)
|
|
|
|
|
%L AC line status (verbose)
|
2005-07-01 11:03:19 +00:00
|
|
|
|
%p Battery load percentage
|
2006-03-11 15:08:42 +00:00
|
|
|
|
%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'"
|
2004-09-18 21:33:44 +00:00
|
|
|
|
(let ((design-capacity 0)
|
2006-01-19 17:49:13 +00:00
|
|
|
|
(last-full-capacity 0)
|
|
|
|
|
full-capacity
|
2004-09-18 21:33:44 +00:00
|
|
|
|
(warn 0)
|
|
|
|
|
(low 0)
|
|
|
|
|
capacity rate rate-type charging-state minutes hours)
|
|
|
|
|
;; ACPI provides information about each battery present in the system in
|
|
|
|
|
;; a separate subdirectory. We are going to merge the available
|
2004-09-18 11:50:18 +00:00
|
|
|
|
;; information together since displaying for a variable amount of
|
|
|
|
|
;; batteries seems overkill for format-strings.
|
|
|
|
|
(with-temp-buffer
|
2004-09-18 21:33:44 +00:00
|
|
|
|
(dolist (dir (ignore-errors (directory-files "/proc/acpi/battery/"
|
|
|
|
|
t "\\`[^.]")))
|
|
|
|
|
(erase-buffer)
|
|
|
|
|
(ignore-errors (insert-file-contents (expand-file-name "state" dir)))
|
|
|
|
|
(when (re-search-forward "present: +yes$" nil t)
|
|
|
|
|
(and (re-search-forward "charging state: +\\(.*\\)$" nil t)
|
2006-03-11 15:08:42 +00:00
|
|
|
|
(member charging-state '("unknown" "charged" nil))
|
2004-09-18 21:33:44 +00:00
|
|
|
|
;; On most multi-battery systems, most of the time only one
|
|
|
|
|
;; battery is "charging"/"discharging", the others are
|
|
|
|
|
;; "unknown".
|
|
|
|
|
(setq charging-state (match-string 1)))
|
|
|
|
|
(when (re-search-forward "present rate: +\\([0-9]+\\) \\(m[AW]\\)$"
|
|
|
|
|
nil t)
|
|
|
|
|
(setq rate (+ (or rate 0) (string-to-number (match-string 1)))
|
|
|
|
|
rate-type (or (and rate-type
|
|
|
|
|
(if (string= rate-type (match-string 2))
|
|
|
|
|
rate-type
|
|
|
|
|
(error
|
|
|
|
|
"Inconsistent rate types (%s vs. %s)"
|
|
|
|
|
rate-type (match-string 2))))
|
|
|
|
|
(match-string 2))))
|
|
|
|
|
(when (re-search-forward "remaining capacity: +\\([0-9]+\\) m[AW]h$"
|
|
|
|
|
nil t)
|
|
|
|
|
(setq capacity
|
|
|
|
|
(+ (or capacity 0) (string-to-number (match-string 1))))))
|
|
|
|
|
(goto-char (point-max))
|
|
|
|
|
(ignore-errors (insert-file-contents (expand-file-name "info" dir)))
|
|
|
|
|
(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))))
|
2006-01-19 17:49:13 +00:00
|
|
|
|
(when (re-search-forward "last full capacity: +\\([0-9]+\\) m[AW]h$"
|
|
|
|
|
nil t)
|
|
|
|
|
(incf last-full-capacity (string-to-number (match-string 1))))
|
2004-09-18 21:33:44 +00:00
|
|
|
|
(when (re-search-forward
|
|
|
|
|
"design capacity warning: +\\([0-9]+\\) m[AW]h$" nil t)
|
|
|
|
|
(incf warn (string-to-number (match-string 1))))
|
|
|
|
|
(when (re-search-forward "design capacity low: +\\([0-9]+\\) m[AW]h$"
|
|
|
|
|
nil t)
|
|
|
|
|
(incf low (string-to-number (match-string 1)))))))
|
2006-01-19 17:49:13 +00:00
|
|
|
|
(setq full-capacity (if (> last-full-capacity 0)
|
|
|
|
|
last-full-capacity design-capacity))
|
2003-09-06 19:28:08 +00:00
|
|
|
|
(and capacity rate
|
2004-06-04 16:05:56 +00:00
|
|
|
|
(setq minutes (if (zerop rate) 0
|
|
|
|
|
(floor (* (/ (float (if (string= charging-state
|
|
|
|
|
"charging")
|
2006-01-19 17:49:13 +00:00
|
|
|
|
(- full-capacity capacity)
|
|
|
|
|
capacity))
|
|
|
|
|
rate)
|
|
|
|
|
60)))
|
2003-09-06 19:28:08 +00:00
|
|
|
|
hours (/ minutes 60)))
|
|
|
|
|
(list (cons ?c (or (and capacity (number-to-string capacity)) "N/A"))
|
2006-11-05 13:22:30 +00:00
|
|
|
|
(cons ?L (or (battery-search-for-one-match-in-files
|
|
|
|
|
(mapcar (lambda (e) (concat e "/state"))
|
2007-01-10 01:20:10 +00:00
|
|
|
|
(ignore-errors
|
|
|
|
|
(directory-files "/proc/acpi/ac_adapter/"
|
|
|
|
|
t "\\`[^.]")))
|
2006-11-05 13:22:30 +00:00
|
|
|
|
"state: +\\(.*\\)$" 1)
|
|
|
|
|
|
2003-09-06 19:28:08 +00:00
|
|
|
|
"N/A"))
|
2006-11-05 13:22:30 +00:00
|
|
|
|
(cons ?d (or (battery-search-for-one-match-in-files
|
|
|
|
|
(mapcar (lambda (e) (concat e "/temperature"))
|
2007-01-10 01:20:10 +00:00
|
|
|
|
(ignore-errors
|
|
|
|
|
(directory-files "/proc/acpi/thermal_zone/"
|
|
|
|
|
t "\\`[^.]")))
|
2006-11-05 13:22:30 +00:00
|
|
|
|
"temperature: +\\([0-9]+\\) C$" 1)
|
|
|
|
|
|
2003-09-06 19:28:08 +00:00
|
|
|
|
"N/A"))
|
2004-06-04 16:05:56 +00:00
|
|
|
|
(cons ?r (or (and rate (concat (number-to-string rate) " "
|
|
|
|
|
rate-type)) "N/A"))
|
2003-09-06 19:28:08 +00:00
|
|
|
|
(cons ?B (or charging-state "N/A"))
|
|
|
|
|
(cons ?b (or (and (string= charging-state "charging") "+")
|
2006-03-11 22:34:46 +00:00
|
|
|
|
(and capacity (< capacity low) "!")
|
|
|
|
|
(and capacity (< capacity warn) "-")
|
2003-09-06 19:28:08 +00:00
|
|
|
|
""))
|
|
|
|
|
(cons ?h (or (and hours (number-to-string hours)) "N/A"))
|
|
|
|
|
(cons ?m (or (and minutes (number-to-string minutes)) "N/A"))
|
|
|
|
|
(cons ?t (or (and minutes
|
|
|
|
|
(format "%d:%02d" hours (- minutes (* 60 hours))))
|
|
|
|
|
"N/A"))
|
2006-01-19 17:49:13 +00:00
|
|
|
|
(cons ?p (or (and full-capacity capacity
|
2006-11-01 14:24:37 +00:00
|
|
|
|
(> full-capacity 0)
|
2003-09-06 19:28:08 +00:00
|
|
|
|
(number-to-string
|
|
|
|
|
(floor (/ capacity
|
2006-01-19 17:49:13 +00:00
|
|
|
|
(/ (float full-capacity) 100)))))
|
2003-09-06 19:28:08 +00:00
|
|
|
|
"N/A")))))
|
|
|
|
|
|
2008-08-08 17:46:49 +00:00
|
|
|
|
|
|
|
|
|
;;; `/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")))))
|
|
|
|
|
|
|
|
|
|
|
2005-07-05 08:14:42 +00:00
|
|
|
|
|
|
|
|
|
;;; `pmset' interface for Darwin (OS X).
|
|
|
|
|
|
|
|
|
|
(defun battery-pmset ()
|
|
|
|
|
"Get battery status information using `pmset'.
|
|
|
|
|
|
|
|
|
|
The following %-sequences are provided:
|
|
|
|
|
%L Power source (verbose)
|
|
|
|
|
%B Battery status (verbose)
|
|
|
|
|
%b Battery status, empty means high, `-' means low,
|
|
|
|
|
`!' means critical, and `+' means charging
|
|
|
|
|
%p Battery load percentage
|
|
|
|
|
%h Remaining time in hours
|
|
|
|
|
%m Remaining time in minutes
|
|
|
|
|
%t Remaining time in the form `h:min'"
|
|
|
|
|
(let (power-source load-percentage battery-status battery-status-symbol
|
|
|
|
|
remaining-time hours minutes)
|
|
|
|
|
(with-temp-buffer
|
|
|
|
|
(ignore-errors (call-process "pmset" nil t nil "-g" "ps"))
|
|
|
|
|
(goto-char (point-min))
|
|
|
|
|
(when (re-search-forward "Currentl?y drawing from '\\(AC\\|Battery\\) Power'" nil t)
|
|
|
|
|
(setq power-source (match-string 1))
|
|
|
|
|
(when (re-search-forward "^ -InternalBattery-0[ \t]+" nil t)
|
|
|
|
|
(when (looking-at "\\([0-9]\\{1,3\\}\\)%")
|
|
|
|
|
(setq load-percentage (match-string 1))
|
|
|
|
|
(goto-char (match-end 0))
|
|
|
|
|
(cond ((looking-at "; charging")
|
|
|
|
|
(setq battery-status "charging"
|
|
|
|
|
battery-status-symbol "+"))
|
|
|
|
|
((< (string-to-number load-percentage) battery-load-low)
|
|
|
|
|
(setq battery-status "low"
|
|
|
|
|
battery-status-symbol "-"))
|
|
|
|
|
((< (string-to-number load-percentage) battery-load-critical)
|
|
|
|
|
(setq battery-status "critical"
|
|
|
|
|
battery-status-symbol "!"))
|
|
|
|
|
(t
|
|
|
|
|
(setq battery-status "high"
|
|
|
|
|
battery-status-symbol "")))
|
|
|
|
|
(when (re-search-forward "\\(\\([0-9]+\\):\\([0-9]+\\)\\) remaining" nil t)
|
|
|
|
|
(setq remaining-time (match-string 1))
|
|
|
|
|
(let ((h (string-to-number (match-string 2)))
|
|
|
|
|
(m (string-to-number (match-string 3))))
|
|
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(setq hours (number-to-string (+ h (if (< m 30) 0 1)))
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minutes (number-to-string (+ (* h 60) m)))))))))
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(list (cons ?L (or power-source "N/A"))
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(cons ?p (or load-percentage "N/A"))
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(cons ?B (or battery-status "N/A"))
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(cons ?b (or battery-status-symbol ""))
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(cons ?h (or hours "N/A"))
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(cons ?m (or minutes "N/A"))
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(cons ?t (or remaining-time "N/A")))))
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|
1997-06-22 20:08:32 +00:00
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;;; Private functions.
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(defun battery-format (format alist)
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|
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|
|
"Substitute %-sequences in FORMAT."
|
2004-09-18 21:33:44 +00:00
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|
(replace-regexp-in-string
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|
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|
"%."
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(lambda (str)
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(let ((char (aref str 1)))
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(if (eq char ?%) "%"
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(or (cdr (assoc char alist)) ""))))
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format t t))
|
1997-06-22 20:08:32 +00:00
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|
2006-11-05 13:22:30 +00:00
|
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|
|
(defun battery-search-for-one-match-in-files (files regexp match-num)
|
|
|
|
|
"Search REGEXP in the content of the files listed in FILES.
|
2007-01-08 23:00:24 +00:00
|
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|
|
If a match occurred, return the parenthesized expression numbered by
|
2006-11-05 13:22:30 +00:00
|
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|
MATCH-NUM in the match. Otherwise, return nil."
|
|
|
|
|
(with-temp-buffer
|
|
|
|
|
(catch 'found
|
|
|
|
|
(dolist (file files)
|
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|
|
(and (ignore-errors (insert-file-contents file nil nil nil 'replace))
|
|
|
|
|
(re-search-forward regexp nil t)
|
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|
|
(throw 'found (match-string match-num)))))))
|
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|
1997-06-22 20:08:32 +00:00
|
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|
|
(provide 'battery)
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;;; battery.el ends here
|