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Annotation of GNUtools/emacs/lisp/time.el, revision 1.1

1.1     ! root        1: ;; Display time and load in mode line of Emacs.
        !             2: ;; Copyright (C) 1985, 1986, 1987, 1990 Free Software Foundation, Inc.
        !             3: 
        !             4: ;; This file is part of GNU Emacs.
        !             5: 
        !             6: ;; GNU Emacs is free software; you can redistribute it and/or modify
        !             7: ;; it under the terms of the GNU General Public License as published by
        !             8: ;; the Free Software Foundation; either version 1, or (at your option)
        !             9: ;; any later version.
        !            10: 
        !            11: ;; GNU Emacs is distributed in the hope that it will be useful,
        !            12: ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13: ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14: ;; GNU General Public License for more details.
        !            15: 
        !            16: ;; You should have received a copy of the GNU General Public License
        !            17: ;; along with GNU Emacs; see the file COPYING.  If not, write to
        !            18: ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
        !            19: 
        !            20: 
        !            21: (defvar display-time-mail-file nil
        !            22:   "*File name of mail inbox file, for indicating existence of new mail.
        !            23: Default is system-dependent, and is the same as used by Rmail.")
        !            24: 
        !            25: (defvar display-time-process nil)
        !            26: 
        !            27: (defvar display-time-interval 60
        !            28:   "*Seconds between updates of time in the mode line.")
        !            29: 
        !            30: (defvar display-time-string nil)
        !            31: 
        !            32: (defun display-time ()
        !            33:   "Display current time and load level in mode line of each buffer.
        !            34: Updates automatically every minute.
        !            35: If display-time-day-and-date is non-nil, the current day and date
        !            36: are displayed as well."
        !            37:   (interactive)
        !            38:   (let ((live (and display-time-process
        !            39:                   (eq (process-status display-time-process) 'run))))
        !            40:     (if (not live)
        !            41:        (progn
        !            42:          (if display-time-process
        !            43:              (delete-process display-time-process))
        !            44:          (or global-mode-string (setq global-mode-string '("")))
        !            45:          (or (memq 'display-time-string global-mode-string)
        !            46:              (setq global-mode-string
        !            47:                    (append global-mode-string '(display-time-string))))
        !            48:          (setq display-time-string "")
        !            49:          (let ((process-connection-type nil))
        !            50:            (setq display-time-process
        !            51:                  (start-process "display-time" nil
        !            52:                                 (concat exec-directory "wakeup")
        !            53:                                 (int-to-string display-time-interval))))
        !            54:          (process-kill-without-query display-time-process)
        !            55:          (set-process-sentinel display-time-process 'display-time-sentinel)
        !            56:          (set-process-filter display-time-process 'display-time-filter)))))
        !            57: 
        !            58: (defun display-time-sentinel (proc reason)
        !            59:   (or (eq (process-status proc) 'run)
        !            60:       (setq display-time-string ""))
        !            61:   ;; Force mode-line updates
        !            62:   (save-excursion (set-buffer (other-buffer)))
        !            63:   (set-buffer-modified-p (buffer-modified-p))
        !            64:   (sit-for 0))
        !            65: 
        !            66: (defun display-time-filter (proc string)
        !            67:   (let ((time (current-time-string))
        !            68:        (load (condition-case ()
        !            69:                  (if (zerop (car (load-average))) ""
        !            70:                    (format "%03d" (car (load-average))))
        !            71:                (error
        !            72:                 (condition-case ()
        !            73:                     (unwind-protect
        !            74:                         (save-excursion
        !            75:                           (set-buffer (get-buffer-create " *uptime*"))
        !            76:                           (call-process "/usr/ucb/uptime" nil (current-buffer))
        !            77:                           (goto-char (point-min))
        !            78:                           (search-forward "average: ")
        !            79:                           ;; Get the integer part and fraction part,
        !            80:                           ;; discarding the period.
        !            81:                           ;; (Because code below adds a period.)
        !            82:                           (concat
        !            83:                            (buffer-substring (point)
        !            84:                                              (progn (forward-word 1) (point)))
        !            85:                            (buffer-substring (1+ (point))
        !            86:                                              (progn (forward-word 1) (point)))))
        !            87:                       (kill-buffer " *uptime*"))
        !            88:                   (error "")))))
        !            89:        (mail-spool-file (or display-time-mail-file
        !            90:                             (getenv "MAIL")
        !            91:                             (concat rmail-spool-directory
        !            92:                                     (or (getenv "LOGNAME")
        !            93:                                         (getenv "USER")
        !            94:                                         (user-login-name)))))
        !            95:        hour pm)
        !            96:     (setq hour (read (substring time 11 13)))
        !            97:     (setq pm (>= hour 12))
        !            98:     (if (> hour 12)
        !            99:        (setq hour (- hour 12))
        !           100:       (if (= hour 0)
        !           101:          (setq hour 12)))
        !           102:     (setq display-time-string
        !           103:          (concat (format "%d" hour) (substring time 13 16)
        !           104:                  (if pm "pm" "am")
        !           105:                  (if (string= load "")
        !           106:                      ""
        !           107:                    (concat " " (substring load 0 -2) "." (substring load -2)))
        !           108:                  (if (and (file-exists-p mail-spool-file)
        !           109:                           ;; file not empty?
        !           110:                           (> (nth 7 (file-attributes mail-spool-file)) 0))
        !           111:                      " Mail"
        !           112:                    "")))
        !           113:     ;; Append the date if desired.
        !           114:     (if display-time-day-and-date
        !           115:        (setq display-time-string
        !           116:              (concat (substring time 0 11) display-time-string))))
        !           117:   ;; Force redisplay of all buffers' mode lines to be considered.
        !           118:   (save-excursion (set-buffer (other-buffer)))
        !           119:   (set-buffer-modified-p (buffer-modified-p))
        !           120:   ;; Do redisplay right now, if no input pending.
        !           121:   (sit-for 0))

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