From: teranisi Date: Thu, 25 Nov 1999 03:43:30 +0000 (+0000) Subject: * poe-18.el (current-time-string, current-time): New functions. X-Git-Tag: of-tm-8_8~2 X-Git-Url: http://git.chise.org/gitweb/?a=commitdiff_plain;h=d11bfd0672b590339a79a49f9688ce250690b1de;p=elisp%2Fapel.git * poe-18.el (current-time-string, current-time): New functions. --- diff --git a/ChangeLog b/ChangeLog index 5b3955f..7e64086 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,7 @@ +1999-11-25 Yuuichi Teranishi + + * poe-18.el (current-time-string, current-time): New functions. + 1999-11-11 Shuhei KOBAYASHI * localhook.el, pcustom.el: checkdoc. diff --git a/poe-18.el b/poe-18.el index 2ca24e6..7ee62ce 100644 --- a/poe-18.el +++ b/poe-18.el @@ -411,6 +411,176 @@ even if a buffer with that name exists." (defun mark (&optional force) (si:mark)) +;;; @@ current-time +;;; + +(or (fboundp 'si:current-time-string) + (fset 'si:current-time-string (symbol-function 'current-time-string))) +(defun current-time-string (&optional specified-time) + "Return the current time, as a human-readable string. +Programs can use this function to decode a time, +since the number of columns in each field is fixed. +The format is `Sun Sep 16 01:03:52 1973'. +If an argument is given, it specifies a time to format +instead of the current time. The argument should have the form: + (HIGH . LOW) +or the form: + (HIGH LOW . IGNORED). +Thus, you can use times obtained from `current-time' +and from `file-attributes'. +\[poe-18.el; EMACS 19 emulating function]" + (if (null specified-time) + (si:current-time-string) + (unless (consp specified-time) + (error "Wrong type argument %s" specified-time)) + (let ((high (car specified-time)) + (low (cdr specified-time)) + (mdays '(31 28 31 30 31 30 31 31 30 31 30 31)) + (mnames '("Jan" "Feb" "Mar" "Apr" "May" "Jun" + "Jul" "Aug" "Sep" "Oct" "Nov" "Dec")) + (wnames '("Sun" "Mon" "Tue" "Wed" "Thu" "Fri" "Sat")) + days dd yyyy mm HH MM SS) + (if (consp low) + (setq low (car low))) + (unless (integerp high) + (error "Wrong type argument %s" high)) + (unless (integerp low) + (error "Wrong type argument %s" low)) + (setq low (+ low 32400)) + (while (> low 65535) + (setq high (1+ high) + low (- low 65536))) + (setq yyyy 1970) + (while (or (> high 481) + (and (eq high 481) + (>= low 13184))) + (when (and (> high 0) + (< low 13184)) + (setq high (1- high) + low (+ 65536 low))) + (setq high (- high 481) + low (- low 13184)) + (if (and (zerop (% yyyy 4)) + (or (not (zerop (% yyyy 100))) + (zerop (% yyyy 400)))) + (progn + (when (and (> high 0) + (< low 20864)) + (setq high (1- high) + low (+ 65536 low))) + (setq high (- high 1) + low (- low 20864)))) + (setq yyyy (1+ yyyy))) + (setq dd 1) + (while (or (> high 1) + (and (eq high 1) + (>= low 20864))) + (when (and (> high 0) + (< low 20864)) + (setq high (1- high) + low (+ 65536 low))) + (setq high (- high 1) + low (- low 20864) + dd (1+ dd))) + (setq days dd) + (if (eq high 1) + (setq low (+ 65536 low))) + (setq mm 0) + (setq uru (and (zerop (% yyyy 4)) + (or (not (zerop (% yyyy 100))) + (zerop (% yyyy 400))))) + (while (> (- dd (nth mm mdays)) 0) + (if (and (eq mm 1) uru) + (setq dd (- dd 29)) + (setq dd (- dd (nth mm mdays)))) + (setq mm (1+ mm))) + (setq HH (/ low 3600) + low (% low 3600) + MM (/ low 60) + SS (% low 60)) + (format "%s %s %2d %02d:%02d:%02d %4d" + (nth (% (+ days + (- (+ (* (1- yyyy) 365) (/ (1- yyyy) 400) + (/ (1- yyyy) 4)) (/ (1- yyyy) 100))) 7) + wnames) + (nth mm mnames) + dd HH MM SS yyyy)))) + +(defun current-time () + "Return the current time, as the number of seconds since 1970-01-01 00:00:00. +The time is returned as a list of three integers. The first has the +most significant 16 bits of the seconds, while the second has the +least significant 16 bits. The third integer gives the microsecond +count. + +The microsecond count is zero on systems that do not provide +resolution finer than a second. +\[poe-18.el; EMACS 19 emulating function]" + (let* ((str (current-time-string)) + (yyyy (string-to-int (substring str 20 24))) + (mm (length (member (substring str 4 7) + '("Dec" "Nov" "Oct" "Sep" "Aug" "Jul" + "Jun" "May" "Apr" "Mar" "Feb" "Jan")))) + (dd (string-to-int (substring str 8 10))) + (HH (string-to-int (substring str 11 13))) + (MM (string-to-int (substring str 14 16))) + (SS (string-to-int (substring str 17 19))) + dn ct1 ct2 i1 i2 + year uru) + (setq ct1 0 ct2 0 i1 0 i2 0) + (setq year (- yyyy 1970)) + (while (> year 0) + (setq year (1- year) + ct1 (+ ct1 481) + ct2 (+ ct2 13184)) + (while (> ct2 65535) + (setq ct1 (1+ ct1) + ct2 (- ct2 65536)))) + (setq uru (- (+ (- (/ yyyy 4) (/ yyyy 100)) + (/ yyyy 400)) 477)) + (while (> uru 0) + (setq uru (1- uru) + i1 (1+ i1) + i2 (+ i2 20864)) + (if (> i2 65535) + (setq i1 (1+ i1) + i2 (- i2 65536)))) + (setq ct1 (+ ct1 i1) + ct2 (+ ct2 i2)) + (while (> ct2 65535) + (setq ct1 (1+ ct1) + ct2 (- ct2 65536))) + (setq dn (+ dd (* 31 (1- mm)))) + (if (> mm 2) + (setq dn (+ (- dn (/ (+ 23 (* 4 mm)) 10)) + (if (and (zerop (% yyyy 4)) + (or (not (zerop (% yyyy 100))) + (zerop (% yyyy 400)))) + 1 0)))) + (setq dn (1- dn) + i1 0 + i2 0) + (while (> dn 0) + (setq dn (1- dn) + i1 (1+ i1) + i2 (+ i2 20864)) + (if (> i2 65535) + (setq i1 (1+ i1) + i2 (- i2 65536)))) + (setq ct1 (+ (+ (+ ct1 i1) (/ ct2 65536)) + (/ (+ (* HH 3600) (* MM 60) SS) + 65536)) + ct2 (+ (+ i2 (% ct2 65536)) + (% (+ (* HH 3600) (* MM 60) SS) + 65536))) + (while (< (- ct2 32400) 0) + (setq ct1 (1- ct1) + ct2 (+ ct2 65536))) + (setq ct2 (- ct2 32400)) + (while (> ct2 65535) + (setq ct1 (1+ ct1) + ct2 (- ct2 65536))) + (list ct1 ct2 0))) ;;; @ end ;;;