/[emacs]/emacs/lisp/battery.el
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revision 1.21 by eliz, Sat Sep 18 11:48:03 2004 UTC revision 1.22 by monnier, Sat Sep 18 21:33:44 2004 UTC
# Line 1  Line 1 
1  ;;; battery.el --- display battery status information  ;;; battery.el --- display battery status information
2    
3  ;; Copyright (C) 1997, 1998, 2000, 2001, 2003 Free Software Foundation, Inc.  ;; Copyright (C) 1997, 1998, 2000, 2001, 2003, 2004
4    ;;           Free Software Foundation, Inc.
5    
6  ;; Author: Ralph Schleicher <rs@nunatak.allgaeu.org>  ;; Author: Ralph Schleicher <rs@nunatak.allgaeu.org>
7  ;; Keywords: hardware  ;; Keywords: hardware
# Line 31  Line 32 
32  ;;; Code:  ;;; Code:
33    
34  (require 'timer)  (require 'timer)
35    (eval-when-compile (require 'cl))
36    
37    
38  (defgroup battery nil  (defgroup battery nil
# Line 181  The following %-sequences are provided: Line 183  The following %-sequences are provided:
183            (re-search-forward battery-linux-proc-apm-regexp)            (re-search-forward battery-linux-proc-apm-regexp)
184            (setq driver-version (match-string 1))            (setq driver-version (match-string 1))
185            (setq bios-version (match-string 2))            (setq bios-version (match-string 2))
186            (setq tem (string-to-int (match-string 3) 16))            (setq tem (string-to-number (match-string 3) 16))
187            (if (not (logand tem 2))            (if (not (logand tem 2))
188                (setq bios-interface "not supported")                (setq bios-interface "not supported")
189              (setq bios-interface "enabled")              (setq bios-interface "enabled")
190              (cond ((logand tem 16) (setq bios-interface "disabled"))              (cond ((logand tem 16) (setq bios-interface "disabled"))
191                    ((logand tem 32) (setq bios-interface "disengaged")))                    ((logand tem 32) (setq bios-interface "disengaged")))
192              (setq tem (string-to-int (match-string 4) 16))              (setq tem (string-to-number (match-string 4) 16))
193              (cond ((= tem 0) (setq line-status "off-line"))              (cond ((= tem 0) (setq line-status "off-line"))
194                    ((= tem 1) (setq line-status "on-line"))                    ((= tem 1) (setq line-status "on-line"))
195                    ((= tem 2) (setq line-status "on backup")))                    ((= tem 2) (setq line-status "on backup")))
196              (setq tem (string-to-int (match-string 6) 16))              (setq tem (string-to-number (match-string 6) 16))
197              (if (= tem 255)              (if (= tem 255)
198                  (setq battery-status "N/A")                  (setq battery-status "N/A")
199                (setq tem (string-to-int (match-string 5) 16))                (setq tem (string-to-number (match-string 5) 16))
200                (cond ((= tem 0) (setq battery-status "high"                (cond ((= tem 0) (setq battery-status "high"
201                                       battery-status-symbol ""))                                       battery-status-symbol ""))
202                      ((= tem 1) (setq battery-status "low"                      ((= tem 1) (setq battery-status "low"
# Line 242  The following %-sequences are provided: Line 244  The following %-sequences are provided:
244  %m Remaining time in minutes  %m Remaining time in minutes
245  %h Remaining time in hours  %h Remaining time in hours
246  %t Remaining time in the form `h:min'"  %t Remaining time in the form `h:min'"
247    (let (capacity design-capacity rate rate-type charging-state warn low    (let ((design-capacity 0)
248                   minutes hours)          (warn 0)
249      ;; ACPI provides information about each battery present in the system          (low 0)
250      ;; in a separate subdirectory.  We are going to merge the available          capacity rate rate-type charging-state minutes hours)
251        ;; ACPI provides information about each battery present in the system in
252        ;; a separate subdirectory.  We are going to merge the available
253      ;; information together since displaying for a variable amount of      ;; information together since displaying for a variable amount of
254      ;; batteries seems overkill for format-strings.      ;; batteries seems overkill for format-strings.
255      (with-temp-buffer      (with-temp-buffer
256        (mapc (lambda (dir)        (dolist (dir (ignore-errors (directory-files "/proc/acpi/battery/"
257                (if (string-match "/\\.\\.?\\'" dir)                                                     t "\\`[^.]")))
258                    nil          (erase-buffer)
259                  (delete-region (point-min) (point-max))          (ignore-errors (insert-file-contents (expand-file-name "state" dir)))
260                  (condition-case nil          (when (re-search-forward "present: +yes$" nil t)
261                      (insert-file-contents (expand-file-name "state" dir))            (and (re-search-forward "charging state: +\\(.*\\)$" nil t)
262                    (error nil))                 (member charging-state '("unknown" nil))
263                  (when (re-search-forward "present: +yes$" nil t)                 ;; On most multi-battery systems, most of the time only one
264                    (and (re-search-forward                 ;; battery is "charging"/"discharging", the others are
265                          "charging state: +\\(.*\\)$" nil t)                 ;; "unknown".
266                         (or (null charging-state)                 (setq charging-state (match-string 1)))
267                             (string= charging-state "unknown"))            (when (re-search-forward "present rate: +\\([0-9]+\\) \\(m[AW]\\)$"
268                         ;; On most multi-battery systems, most of the time                                     nil t)
269                         ;; only one battery is "charging/discharging", the              (setq rate (+ (or rate 0) (string-to-number (match-string 1)))
270                         ;; others are "unknown".                    rate-type (or (and rate-type
271                         (setq charging-state (match-string 1)))                                       (if (string= rate-type (match-string 2))
272                    (when (re-search-forward                                           rate-type
273                           "present rate: +\\([0-9]+\\) \\(m[AW]\\)$" nil t)                                         (error
274                      (setq rate (+ (or rate 0)                                          "Inconsistent rate types (%s vs. %s)"
275                                    (string-to-int (match-string 1)))                                          rate-type (match-string 2))))
276                            rate-type (or (and rate-type                                  (match-string 2))))
277                                               (if (string= rate-type (match-string 2))            (when (re-search-forward "remaining capacity: +\\([0-9]+\\) m[AW]h$"
278                                                   rate-type                                     nil t)
279                                                 (error              (setq capacity
280                                                  "Inconsistent rate types (%s vs. %s)"                    (+ (or capacity 0) (string-to-number (match-string 1))))))
281                                                  rate-type (match-string 2))))          (goto-char (point-max))
282                                          (match-string 2))))          (ignore-errors (insert-file-contents (expand-file-name "info" dir)))
283                    (when (re-search-forward          (when (re-search-forward "present: +yes$" nil t)
284                           "remaining capacity: +\\([0-9]+\\) m[AW]h$" nil t)            (when (re-search-forward "design capacity: +\\([0-9]+\\) m[AW]h$"
285                      (setq capacity (+ (or capacity 0)                                     nil t)
286                                        (string-to-int (match-string 1))))))              (incf design-capacity (string-to-number (match-string 1))))
287                  (goto-char (point-max))            (when (re-search-forward
288                  (condition-case nil                   "design capacity warning: +\\([0-9]+\\) m[AW]h$" nil t)
289                      (insert-file-contents (expand-file-name "info" dir))              (incf warn (string-to-number (match-string 1))))
290                    (error nil))            (when (re-search-forward "design capacity low: +\\([0-9]+\\) m[AW]h$"
291                  (when (re-search-forward "present: +yes$" nil t)                                     nil t)
292                    (when (re-search-forward              (incf low (string-to-number (match-string 1)))))))
                          "design capacity: +\\([0-9]+\\) m[AW]h$" nil t)  
                     (setq design-capacity (+ (or design-capacity 0)  
                                              (string-to-int (match-string 1)))))  
                   (when (re-search-forward  
                          "design capacity warning: +\\([0-9]+\\) m[AW]h$" nil t)  
                     (setq warn (+ (or warn 0)  
                                   (string-to-int (match-string 1)))))  
                   (when (re-search-forward  
                          "design capacity low: +\\([0-9]+\\) m[AW]h$" nil t)  
                     (setq low (+ (or low 0)  
                                  (string-to-int (match-string 1))))))))  
             (condition-case nil  
                 (directory-files "/proc/acpi/battery/" t)  
               (error nil))))  
293      (and capacity rate      (and capacity rate
294           (setq minutes (if (zerop rate) 0           (setq minutes (if (zerop rate) 0
295                           (floor (* (/ (float (if (string= charging-state                           (floor (* (/ (float (if (string= charging-state
# Line 336  The following %-sequences are provided: Line 326  The following %-sequences are provided:
326                                           rate-type)) "N/A"))                                           rate-type)) "N/A"))
327            (cons ?B (or charging-state "N/A"))            (cons ?B (or charging-state "N/A"))
328            (cons ?b (or (and (string= charging-state "charging") "+")            (cons ?b (or (and (string= charging-state "charging") "+")
329                         (and low (< capacity low) "!")                         (and (< capacity low) "!")
330                         (and warn (< capacity warn) "-")                         (and (< capacity warn) "-")
331                         ""))                         ""))
332            (cons ?h (or (and hours (number-to-string hours)) "N/A"))            (cons ?h (or (and hours (number-to-string hours)) "N/A"))
333            (cons ?m (or (and minutes (number-to-string minutes)) "N/A"))            (cons ?m (or (and minutes (number-to-string minutes)) "N/A"))
# Line 355  The following %-sequences are provided: Line 345  The following %-sequences are provided:
345    
346  (defun battery-format (format alist)  (defun battery-format (format alist)
347    "Substitute %-sequences in FORMAT."    "Substitute %-sequences in FORMAT."
348    (let ((index 0)    (replace-regexp-in-string
349          (length (length format))     "%."
350          (result "")     (lambda (str)
351          char flag elem)       (let ((char (aref str 1)))
352      (while (< index length)         (if (eq char ?%) "%"
353        (setq char (aref format index))           (or (cdr (assoc char alist)) ""))))
354        (if (not flag)     format t t))
           (if (char-equal char ?%)  
               (setq flag t)  
             (setq result (concat result (char-to-string char))))  
         (cond ((char-equal char ?%)  
                (setq result (concat result "%")))  
               ((setq elem (assoc char alist))  
                (setq result (concat result (cdr elem)))))  
         (setq flag nil))  
       (setq index (1+ index)))  
     (or (null flag)  
         (setq result (concat result "%")))  
     result))  
355    
356    
357  (provide 'battery)  (provide 'battery)
358    
359  ;;; arch-tag: 65916f50-4754-4b6b-ac21-0b510f545a37  ;; arch-tag: 65916f50-4754-4b6b-ac21-0b510f545a37
360  ;;; battery.el ends here  ;;; battery.el ends here

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