1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
|
;;; -*- lexical-binding: nil; -*-
;;; howm-date.el --- Wiki-like note-taking tool
;;; Copyright (C) 2002, 2003, 2004, 2005-2025
;;; HIRAOKA Kazuyuki <kakkokakko@gmail.com>
;;;
;;; This program is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 1, or (at your option)
;;; any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; The GNU General Public License is available by anonymouse ftp from
;;; prep.ai.mit.edu in pub/gnu/COPYING. Alternately, you can write to
;;; the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
;;; USA.
;;--------------------------------------------------------------------
(provide 'howm-date)
(require 'howm)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; insert & action-lock
(defvar howm-insert-date-pass-through nil)
(defvar howm-action-lock-date-future nil)
(defun howm-insert-date ()
(interactive)
(let ((date (format-time-string howm-date-format)))
(insert (format howm-insert-date-format date))
(howm-action-lock-date date t howm-insert-date-future)))
(defun howm-insert-dtime ()
(interactive)
(insert (format-time-string howm-dtime-format)))
;; Sorry for ugly behavior around "new" to keep backward compatibility.
(defun howm-action-lock-date (date &optional new future-p)
(let* ((pass-through (and new howm-insert-date-pass-through))
(prompt (howm-action-lock-date-prompt date new pass-through))
(immediate-chars (if pass-through "" "."))
(c (howm-read-string prompt immediate-chars "+-~0123456789"
pass-through pass-through)))
(cond
((null c) nil) ;; pass through
((string= c "")
(if new
t
(howm-action-lock-date-search date)))
((string-match "^[-+][0-9]+$" c)
(howm-action-lock-date-shift (string-to-number c) date))
((string-match "^[0-9]+$" c)
(howm-action-lock-date-set c date
(or future-p howm-action-lock-date-future)))
((string-match "^~\\([0-9]+\\)$" c)
(howm-action-lock-date-repeat (match-string-no-properties 1 c) date))
((string-match "^[.]$" c)
(howm-datestr-replace (howm-time-to-datestr)))
((and (string-match "^[-+~]$" c) pass-through)
(insert c))
(t (error (format "Can't understand %s." c))))))
(defun howm-action-lock-date-prompt (date new pass-through)
(let* ((dow (howm-datestr-day-of-week date))
(common-help "+num(shift), yymmdd(set), ~yymmdd(repeat)")
(today-help ", .(today)")
(help (cond ((and new pass-through)
common-help)
((and new (not pass-through))
(concat "RET(ok), " common-help today-help))
((not new)
(concat "RET(list), " common-help today-help))
(t
(error "Can't happen.")))))
(format "[%s] %s: " dow help)))
(defvar howm-date-current nil)
(make-variable-buffer-local 'howm-date-current)
(defun howm-action-lock-date-search (date)
(howm-set-command 'howm-action-lock-date-search)
(let ((items (howm-search date t)))
(howm-action-lock-forward-escape)
(when items
(setq howm-date-current date))
items))
(defun howm-search-today ()
(interactive)
(howm-search-past 0))
(defun howm-search-past (&optional days-before)
(interactive "P")
(let* ((n (or days-before 0))
(today (format-time-string howm-date-format))
(target (howm-datestr-shift today 0 0 (- n))))
(howm-action-lock-date-search target)))
(defun howm-action-lock-date-shift (n date)
(howm-datestr-replace (howm-datestr-shift date 0 0 n)))
(defun howm-action-lock-date-set (val date &optional future-p)
(howm-datestr-replace (howm-datestr-expand val date future-p)))
(defvar howm-action-lock-date-repeat-max 200)
(defun howm-action-lock-date-repeat (until date)
(let ((every (read-from-minibuffer "Every? [RET(all), num(days), w(week), m(month), y(year)] ")))
(let ((max-d (howm-datestr-expand until date t))
(offset-y (if (string= every "y") 1 0))
(offset-m (if (string= every "m") 1 0))
(offset-d (or (cdr (assoc every '(("y" . 0) ("m" . 0) ("w" . 7))))
(max (string-to-number every) 1))))
(let ((d date)
(i 0)
(check t))
(catch 'too-many
(while (progn
(setq d (howm-datestr-shift d offset-y offset-m offset-d))
(howm-datestr<= d max-d))
(when (and check (>= i howm-action-lock-date-repeat-max))
(if (y-or-n-p (format "More than %d lines. Continue? " i))
(setq check nil)
(throw 'too-many nil)))
(howm-duplicate-line)
(howm-datestr-replace d)
(setq i (+ i 1))))))))
(defun howm-make-datestr (y m d)
(let ((ti (encode-time 0 0 0 d m y)))
(format-time-string howm-date-format ti)))
(defun howm-datestr-parse (date)
(string-match howm-date-regexp date)
(mapcar (lambda (pos)
(string-to-number (match-string-no-properties pos date)))
(list howm-date-regexp-year-pos
howm-date-regexp-month-pos
howm-date-regexp-day-pos)))
(defun howm-datestr-to-time (date)
(let* ((ymd (howm-datestr-parse date))
(y (car ymd))
(m (cadr ymd))
(d (cl-caddr ymd)))
(encode-time 0 0 0 d m y)))
(defun howm-time-to-datestr (&optional time)
(let ((x (decode-time time)))
(howm-make-datestr (nth 5 x) (nth 4 x) (nth 3 x))))
(defun howm-datestr-day-of-week (date)
(format-time-string "%a" (howm-datestr-to-time date)))
(defun howm-datestr-expand (date base &optional future-p)
(let* ((raw (howm-datestr-expand-general date base nil))
(future (howm-datestr-expand-general date base t))
(ret
(cond ((eq future-p 'closer)
(cl-labels ((to-f (d) (float-time (howm-datestr-to-time d)))
(delta (d1 d2) (abs (- (to-f d1) (to-f d2)))))
(if (< (delta raw base) (delta future base)) raw future)))
(future-p future)
(t raw))))
(unless (string= raw ret)
(message "Assume future date"))
ret))
(defun howm-datestr-expand-general (date base &optional future-p)
(let* ((base-ymd (howm-datestr-parse base))
(nval (format "%8s" date))
(given-ymd-str (mapcar (lambda (r)
(substring nval (car r) (cadr r)))
'((0 4) (4 6) (6 8))))
(ys (car given-ymd-str))
(ms (cadr given-ymd-str))
(ds (cl-caddr given-ymd-str)))
(when (string-match "^ +0+$" ys)
(setq ys "2000"))
(let* ((given-ymd (mapcar #'string-to-number (list ys ms ds)))
(carry nil) ;; to force future date
(dmy (cl-mapcar (lambda (ox nx)
(when future-p
(when (and carry (= nx 0))
(setq ox (+ ox 1)))
(setq carry
(cond ((= nx 0) nil)
((= nx ox) carry)
((< nx ox) t)
(t nil))))
(if (= nx 0) ox nx))
(reverse base-ymd) (reverse given-ymd)))
(d (car dmy))
(m (cadr dmy))
(y (cl-caddr dmy)))
(howm-make-datestr (if (<= y 99) (+ y 2000) y) m d))))
(defun howm-datestr-shift (date y m d)
(let* ((ymd (howm-datestr-parse date))
(oy (car ymd))
(om (cadr ymd))
(od (cl-caddr ymd)))
(howm-make-datestr (+ oy y) (+ om m) (+ od d))))
(defun howm-datestr<= (date1 date2)
(or (string< date1 date2)
(string= date1 date2)))
(defun howm-datestr-replace (date)
(let ((p (point)))
(while (not (looking-at howm-date-regexp))
(backward-char))
(replace-match date t t)
(goto-char p)))
(defun howm-duplicate-line ()
(let ((c (current-column))
(s (buffer-substring (line-beginning-position) (line-end-position))))
(end-of-line)
(insert "\n" s)
(move-to-column c)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; search for next/previous date
(defvar howm-date-forward-ymd-msg "Searching %s...")
(defvar howm-date-forward-ymd-limit 35)
(defun howm-date-forward-ymd (y m d)
(when (not howm-date-current)
(error "Not in date search."))
(let* ((new-date (howm-datestr-shift howm-date-current y m d))
(b (current-buffer))
(step (if (> (+ y m d) 0) +1 -1))
(c 0))
(when (catch :found
(while (progn
(when (howm-action-lock-date-search new-date)
(throw :found t))
(< c howm-date-forward-ymd-limit))
(setq new-date (howm-datestr-shift new-date 0 0 step))
(setq c (1+ c))
(when howm-date-forward-ymd-msg
(message howm-date-forward-ymd-msg new-date)))
(error "Not found within %d days." howm-date-forward-ymd-limit))
(when (not (eq (current-buffer) b))
(with-current-buffer b
(howm-view-kill-buffer)))
(howm-view-summary-check t))))
(defmacro howm-date-defun-f/b (func y m d)
`(defun ,func (&optional k)
(interactive "P")
(let ((n (or k 1)))
(howm-date-forward-ymd ,y ,m ,d))))
(howm-date-defun-f/b howm-date-forward 0 0 n)
(howm-date-defun-f/b howm-date-forward-month 0 n 0)
(howm-date-defun-f/b howm-date-forward-year n 0 0)
(howm-date-defun-f/b howm-date-backward 0 0 (- n))
(howm-date-defun-f/b howm-date-backward-month 0 (- n) 0)
(howm-date-defun-f/b howm-date-backward-year (- n) 0 0)
(let ((m howm-view-summary-mode-map))
(define-key m "+" 'howm-date-forward)
(define-key m "-" 'howm-date-backward)
(define-key m ")" 'howm-date-forward)
(define-key m "(" 'howm-date-backward)
(define-key m "}" 'howm-date-forward-month)
(define-key m "{" 'howm-date-backward-month)
(define-key m "]" 'howm-date-forward-year)
(define-key m "[" 'howm-date-backward-year)
)
;;; howm-date.el ends here
|
