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1 | ;;; cal-html.el --- functions for printing HTML calendars |
2 | ||
95df8112 | 3 | ;; Copyright (C) 2002-2011 Free Software Foundation, Inc. |
94ce0230 GM |
4 | |
5 | ;; Author: Anna M. Bigatti <bigatti@dima.unige.it> | |
6 | ;; Keywords: calendar | |
7 | ;; Human-Keywords: calendar, diary, HTML | |
8 | ;; Created: 23 Aug 2002 | |
bd78fa1d | 9 | ;; Package: calendar |
94ce0230 GM |
10 | |
11 | ;; This file is part of GNU Emacs. | |
12 | ||
2ed66575 | 13 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
94ce0230 | 14 | ;; it under the terms of the GNU General Public License as published by |
2ed66575 GM |
15 | ;; the Free Software Foundation, either version 3 of the License, or |
16 | ;; (at your option) any later version. | |
94ce0230 GM |
17 | |
18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;; GNU General Public License for more details. | |
22 | ||
23 | ;; You should have received a copy of the GNU General Public License | |
2ed66575 | 24 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
94ce0230 GM |
25 | |
26 | ;;; Commentary: | |
27 | ||
28 | ;; This package writes HTML calendar files using the user's diary | |
29 | ;; file. See the Emacs manual for details. | |
30 | ||
31 | ||
32 | ;;; Code: | |
33 | ||
34 | (require 'calendar) | |
35 | ||
36 | \f | |
37 | (defgroup calendar-html nil | |
38 | "Options for HTML calendars." | |
39 | :prefix "cal-html-" | |
40 | :group 'calendar) | |
41 | ||
42 | (defcustom cal-html-directory "~/public_html" | |
43 | "Directory for HTML pages generated by cal-html." | |
44 | :type 'string | |
45 | :group 'calendar-html) | |
46 | ||
47 | (defcustom cal-html-print-day-number-flag nil | |
48 | "Non-nil means print the day-of-the-year number in the monthly cal-html page." | |
49 | :type 'boolean | |
50 | :group 'calendar-html) | |
51 | ||
52 | (defcustom cal-html-year-index-cols 3 | |
53 | "Number of columns in the cal-html yearly index page." | |
54 | :type 'integer | |
55 | :group 'calendar-html) | |
56 | ||
57 | (defcustom cal-html-day-abbrev-array | |
58 | (calendar-abbrev-construct calendar-day-abbrev-array | |
59 | calendar-day-name-array) | |
60 | "Array of seven strings for abbreviated day names (starting with Sunday)." | |
61 | :type '(vector string string string string string string string) | |
62 | :group 'calendar-html) | |
63 | ||
64 | (defcustom cal-html-css-default | |
65 | (concat | |
66 | "<STYLE TYPE=\"text/css\">\n" | |
67 | " BODY { background: #bde; }\n" | |
68 | " H1 { text-align: center; }\n" | |
69 | " TABLE { padding: 2pt; }\n" | |
70 | " TH { background: #dee; }\n" | |
71 | " TABLE.year { width: 100%; }\n" | |
72 | " TABLE.agenda { width: 100%; }\n" | |
73 | " TABLE.header { width: 100%; text-align: center; }\n" | |
74 | " TABLE.minical TD { background: white; text-align: center; }\n" | |
75 | " TABLE.agenda TD { background: white; text-align: left; }\n" | |
76 | " TABLE.agenda TH { text-align: left; width: 20%; }\n" | |
77 | " SPAN.NO-YEAR { color: #0b3; font-weight: bold; }\n" | |
78 | " SPAN.ANN { color: #0bb; font-weight: bold; }\n" | |
79 | " SPAN.BLOCK { color: #048; font-style: italic; }\n" | |
80 | "</STYLE>\n\n") | |
81 | "Default cal-html css style. You can override this with a \"cal.css\" file." | |
82 | :type 'string | |
83 | :group 'calendar-html) | |
84 | ||
85 | ;;; End customizable variables. | |
86 | ||
87 | \f | |
88 | ;;; HTML and CSS code constants. | |
89 | ||
90 | (defconst cal-html-e-document-string "<BR><BR>\n</BODY>\n</HTML>" | |
91 | "HTML code for end of page.") | |
92 | ||
93 | (defconst cal-html-b-tablerow-string "<TR>\n" | |
94 | "HTML code for beginning of table row.") | |
95 | ||
96 | (defconst cal-html-e-tablerow-string "</TR>\n" | |
97 | "HTML code for end of table row.") | |
98 | ||
99 | (defconst cal-html-b-tabledata-string " <TD>" | |
100 | "HTML code for beginning of table data.") | |
101 | ||
102 | (defconst cal-html-e-tabledata-string " </TD>\n" | |
103 | "HTML code for end of table data.") | |
104 | ||
105 | (defconst cal-html-b-tableheader-string " <TH>" | |
106 | "HTML code for beginning of table header.") | |
107 | ||
108 | (defconst cal-html-e-tableheader-string " </TH>\n" | |
109 | "HTML code for end of table header.") | |
110 | ||
111 | (defconst cal-html-e-table-string | |
112 | "</TABLE>\n<!-- ================================================== -->\n" | |
113 | "HTML code for end of table.") | |
114 | ||
115 | (defconst cal-html-minical-day-format " <TD><a href=%s#%d>%d</TD>\n" | |
116 | "HTML code for a day in the minical - links NUM to month-page#NUM.") | |
117 | ||
118 | (defconst cal-html-b-document-string | |
119 | (concat | |
120 | "<HTML>\n" | |
121 | "<HEAD>\n" | |
122 | "<TITLE>Calendar</TITLE>\n" | |
123 | "<!--This buffer was produced by cal-html.el-->\n\n" | |
124 | cal-html-css-default | |
125 | "<LINK REL=\"stylesheet\" TYPE=\"text/css\" HREF=\"cal.css\">\n" | |
126 | "</HEAD>\n\n" | |
127 | "<BODY>\n\n") | |
128 | "Initial block for html page.") | |
129 | ||
130 | (defconst cal-html-html-subst-list | |
131 | '(("&" . "&") | |
132 | ("\n" . "<BR>\n")) | |
133 | "Alist of symbols and their HTML replacements.") | |
134 | ||
135 | ||
136 | \f | |
137 | (defun cal-html-comment (string) | |
138 | "Return STRING as html comment." | |
139 | (format "<!-- ====== %s ====== -->\n" | |
140 | (replace-regexp-in-string "--" "++" string))) | |
141 | ||
142 | (defun cal-html-href (link string) | |
143 | "Return a hyperlink to url LINK with text STRING." | |
144 | (format "<A HREF=\"%s\">%s</A>" link string)) | |
145 | ||
146 | (defun cal-html-h3 (string) | |
147 | "Return STRING as html header h3." | |
148 | (format "\n <H3>%s</H3>\n" string)) | |
149 | ||
150 | (defun cal-html-h1 (string) | |
151 | "Return STRING as html header h1." | |
152 | (format "\n <H1>%s</H1>\n" string)) | |
153 | ||
154 | (defun cal-html-th (string) | |
155 | "Return STRING as html table header." | |
156 | (format "%s%s%s" cal-html-b-tableheader-string string | |
157 | cal-html-e-tableheader-string)) | |
158 | ||
159 | (defun cal-html-b-table (arg) | |
160 | "Return table tag with attribute ARG." | |
161 | (format "\n<TABLE %s>\n" arg)) | |
162 | ||
163 | (defun cal-html-monthpage-name (month year) | |
164 | "Return name of html page for numeric MONTH and four-digit YEAR. | |
165 | For example, \"2006-08.html\" for 8 2006." | |
166 | (format "%d-%.2d.html" year month)) | |
167 | ||
168 | ||
169 | (defun cal-html-insert-link-monthpage (month year &optional change-dir) | |
170 | "Insert a link to the html page for numeric MONTH and four-digit YEAR. | |
171 | If optional argument CHANGE-DIR is non-nil and MONTH is 1 or 2, | |
172 | the link points to a different year and so has a directory part." | |
173 | (insert (cal-html-h3 | |
174 | (cal-html-href | |
175 | (concat (and change-dir | |
176 | (member month '(1 12)) | |
177 | (format "../%d/" year)) | |
178 | (cal-html-monthpage-name month year)) | |
179 | (calendar-month-name month))))) | |
180 | ||
181 | ||
182 | (defun cal-html-insert-link-yearpage (month year) | |
85133518 | 183 | "Insert a link tagged with MONTH name, to index page for four-digit YEAR." |
94ce0230 GM |
184 | (insert (cal-html-h1 |
185 | (format "%s %s" | |
186 | (calendar-month-name month) | |
187 | (cal-html-href "index.html" (number-to-string year)))))) | |
188 | ||
189 | ||
190 | (defun cal-html-year-dir-ask-user (year) | |
191 | "Prompt for the html calendar output directory for four-digit YEAR. | |
192 | Return the expanded directory name, which is based on | |
193 | `cal-html-directory' by default." | |
194 | (expand-file-name (read-directory-name | |
195 | "Enter HTML calendar directory name: " | |
196 | (expand-file-name (format "%d" year) | |
197 | cal-html-directory)))) | |
198 | ||
199 | ;;------------------------------------------------------------ | |
200 | ;; page header | |
201 | ;;------------------------------------------------------------ | |
202 | (defun cal-html-insert-month-header (month year) | |
203 | "Insert the header for the numeric MONTH page for four-digit YEAR. | |
204 | Contains links to previous and next month and year, and current minical." | |
205 | (insert (cal-html-b-table "class=header")) | |
206 | (insert cal-html-b-tablerow-string) | |
207 | (insert cal-html-b-tabledata-string) ; month links | |
e803eab7 | 208 | (calendar-increment-month month year -1) ; previous month |
94ce0230 | 209 | (cal-html-insert-link-monthpage month year t) ; t --> change-dir |
e803eab7 | 210 | (calendar-increment-month month year 1) ; current month |
94ce0230 | 211 | (cal-html-insert-link-yearpage month year) |
e803eab7 | 212 | (calendar-increment-month month year 1) ; next month |
94ce0230 GM |
213 | (cal-html-insert-link-monthpage month year t) ; t --> change-dir |
214 | (insert cal-html-e-tabledata-string) | |
215 | (insert cal-html-b-tabledata-string) ; minical | |
e803eab7 | 216 | (calendar-increment-month month year -1) |
94ce0230 GM |
217 | (cal-html-insert-minical month year) |
218 | (insert cal-html-e-tabledata-string) | |
219 | (insert cal-html-e-tablerow-string) ; end | |
220 | (insert cal-html-e-table-string)) | |
221 | ||
222 | ;;------------------------------------------------------------ | |
223 | ;; minical: a small month calendar with links | |
224 | ;;------------------------------------------------------------ | |
225 | (defun cal-html-insert-minical (month year) | |
226 | "Insert a minical for numeric MONTH of YEAR." | |
227 | (let* ((blank-days ; at start of month | |
228 | (mod (- (calendar-day-of-week (list month 1 year)) | |
229 | calendar-week-start-day) | |
230 | 7)) | |
231 | (last (calendar-last-day-of-month month year)) | |
232 | (end-blank-days ; at end of month | |
233 | (mod (- 6 (- (calendar-day-of-week (list month last year)) | |
234 | calendar-week-start-day)) | |
235 | 7)) | |
236 | (monthpage-name (cal-html-monthpage-name month year)) | |
237 | date) | |
238 | ;; Start writing table. | |
239 | (insert (cal-html-comment "MINICAL") | |
240 | (cal-html-b-table "class=minical border=1 align=center")) | |
241 | ;; Weekdays row. | |
242 | (insert cal-html-b-tablerow-string) | |
243 | (dotimes (i 7) | |
244 | (insert (cal-html-th | |
245 | (aref cal-html-day-abbrev-array | |
246 | (mod (+ i calendar-week-start-day) 7))))) | |
247 | (insert cal-html-e-tablerow-string) | |
248 | ;; Initial empty slots. | |
249 | (insert cal-html-b-tablerow-string) | |
250 | (dotimes (i blank-days) | |
251 | (insert | |
252 | cal-html-b-tabledata-string | |
253 | cal-html-e-tabledata-string)) | |
254 | ;; Numbers. | |
255 | (dotimes (i last) | |
256 | (insert (format cal-html-minical-day-format monthpage-name i (1+ i))) | |
257 | ;; New row? | |
258 | (if (and (zerop (mod (+ i 1 blank-days) 7)) | |
259 | (/= (1+ i) last)) | |
260 | (insert cal-html-e-tablerow-string | |
261 | cal-html-b-tablerow-string))) | |
262 | ;; End empty slots (for some browsers like konqueror). | |
263 | (dotimes (i end-blank-days) | |
264 | (insert | |
265 | cal-html-b-tabledata-string | |
266 | cal-html-e-tabledata-string))) | |
267 | (insert cal-html-e-tablerow-string | |
268 | cal-html-e-table-string | |
269 | (cal-html-comment "MINICAL end"))) | |
270 | ||
271 | ||
272 | ;;------------------------------------------------------------ | |
273 | ;; year index page with minicals | |
274 | ;;------------------------------------------------------------ | |
275 | (defun cal-html-insert-year-minicals (year cols) | |
276 | "Make a one page yearly mini-calendar for four-digit YEAR. | |
277 | There are 12/cols rows of COLS months each." | |
278 | (insert cal-html-b-document-string) | |
279 | (insert (cal-html-h1 (number-to-string year))) | |
280 | (insert (cal-html-b-table "class=year") | |
281 | cal-html-b-tablerow-string) | |
282 | (dotimes (i 12) | |
283 | (insert cal-html-b-tabledata-string) | |
284 | (cal-html-insert-link-monthpage (1+ i) year) | |
285 | (cal-html-insert-minical (1+ i) year) | |
286 | (insert cal-html-e-tabledata-string) | |
287 | (if (zerop (mod (1+ i) cols)) | |
288 | (insert cal-html-e-tablerow-string | |
289 | cal-html-b-tablerow-string))) | |
290 | (insert cal-html-e-tablerow-string | |
291 | cal-html-e-table-string | |
292 | cal-html-e-document-string)) | |
293 | ||
294 | ||
295 | ;;------------------------------------------------------------ | |
296 | ;; HTMLify | |
297 | ;;------------------------------------------------------------ | |
298 | ||
299 | (defun cal-html-htmlify-string (string) | |
300 | "Protect special characters in STRING from HTML. | |
301 | Characters are replaced according to `cal-html-html-subst-list'." | |
302 | (if (stringp string) | |
303 | (replace-regexp-in-string | |
304 | (regexp-opt (mapcar 'car cal-html-html-subst-list)) | |
305 | (lambda (x) | |
306 | (cdr (assoc x cal-html-html-subst-list))) | |
307 | string) | |
308 | "")) | |
309 | ||
310 | ||
311 | (defun cal-html-htmlify-entry (entry) | |
312 | "Convert a diary entry ENTRY to html with the appropriate class specifier." | |
313 | (let ((start | |
314 | (cond | |
85133518 GM |
315 | ((string-match "block" (nth 2 entry)) "BLOCK") |
316 | ((string-match "anniversary" (nth 2 entry)) "ANN") | |
94ce0230 | 317 | ((not (string-match |
85133518 GM |
318 | (number-to-string (nth 2 (car entry))) |
319 | (nth 2 entry))) | |
94ce0230 GM |
320 | "NO-YEAR") |
321 | (t "NORMAL")))) | |
322 | (format "<span class=%s>%s</span>" start | |
323 | (cal-html-htmlify-string (cadr entry))))) | |
324 | ||
325 | ||
326 | (defun cal-html-htmlify-list (date-list date) | |
85133518 | 327 | "Return a string of concatenated, HTML-ified diary entries. |
94ce0230 GM |
328 | DATE-LIST is a list of diary entries. Return only those matching DATE." |
329 | (mapconcat (lambda (x) (cal-html-htmlify-entry x)) | |
330 | (let (result) | |
331 | (dolist (p date-list (reverse result)) | |
332 | (and (car p) | |
333 | (calendar-date-equal date (car p)) | |
334 | (setq result (cons p result))))) | |
335 | "<BR>\n ")) | |
336 | ||
337 | ||
338 | ;;------------------------------------------------------------ | |
339 | ;; Monthly calendar | |
340 | ;;------------------------------------------------------------ | |
341 | ||
d3a0e5bf | 342 | (autoload 'diary-list-entries "diary-lib") |
94ce0230 GM |
343 | |
344 | (defun cal-html-list-diary-entries (d1 d2) | |
345 | "Generate a list of all diary-entries from absolute date D1 to D2." | |
fb696168 GM |
346 | (diary-list-entries (calendar-gregorian-from-absolute d1) |
347 | (1+ (- d2 d1)) t)) | |
94ce0230 GM |
348 | |
349 | ||
350 | (defun cal-html-insert-agenda-days (month year diary-list) | |
351 | "Insert HTML commands for a range of days in monthly calendars. | |
352 | HTML commands are inserted for the days of the numeric MONTH in | |
353 | four-digit YEAR. Diary entries in DIARY-LIST are included." | |
354 | (let ((blank-days ; at start of month | |
355 | (mod (- (calendar-day-of-week (list month 1 year)) | |
356 | calendar-week-start-day) | |
357 | 7)) | |
358 | (last (calendar-last-day-of-month month year)) | |
359 | date) | |
360 | (insert "<a name=0>\n") | |
361 | (insert (cal-html-b-table "class=agenda border=1")) | |
362 | (dotimes (i last) | |
363 | (setq date (list month (1+ i) year)) | |
364 | (insert | |
365 | (format "<a name=%d></a>\n" (1+ i)) ; link | |
366 | cal-html-b-tablerow-string | |
367 | ;; Number & day name. | |
368 | cal-html-b-tableheader-string | |
369 | (if cal-html-print-day-number-flag | |
370 | (format "<em>%d</em> " | |
371 | (calendar-day-number date)) | |
372 | "") | |
373 | (format "%d %s" (1+ i) | |
374 | (aref calendar-day-name-array | |
375 | (calendar-day-of-week date))) | |
376 | cal-html-e-tableheader-string | |
377 | ;; Diary entries. | |
378 | cal-html-b-tabledata-string | |
379 | (cal-html-htmlify-list diary-list date) | |
380 | cal-html-e-tabledata-string | |
381 | cal-html-e-tablerow-string) | |
382 | ;; If end of week and not end of month, make new table. | |
383 | (if (and (zerop (mod (+ i 1 blank-days) 7)) | |
384 | (/= (1+ i) last)) | |
385 | (insert cal-html-e-table-string | |
386 | (cal-html-b-table | |
387 | "class=agenda border=1"))))) | |
388 | (insert cal-html-e-table-string)) | |
389 | ||
390 | ||
391 | (defun cal-html-one-month (month year dir) | |
392 | "Write an HTML calendar file for numeric MONTH of YEAR in directory DIR." | |
393 | (let ((diary-list (cal-html-list-diary-entries | |
394 | (calendar-absolute-from-gregorian (list month 1 year)) | |
395 | (calendar-absolute-from-gregorian | |
396 | (list month | |
397 | (calendar-last-day-of-month month year) | |
398 | year))))) | |
399 | (with-temp-buffer | |
400 | (insert cal-html-b-document-string) | |
401 | (cal-html-insert-month-header month year) | |
402 | (cal-html-insert-agenda-days month year diary-list) | |
403 | (insert cal-html-e-document-string) | |
404 | (write-file (expand-file-name | |
405 | (cal-html-monthpage-name month year) dir))))) | |
406 | ||
407 | \f | |
408 | ;;; User commands. | |
409 | ||
d3a0e5bf | 410 | ;;;###cal-autoload |
b40f3832 | 411 | (defun cal-html-cursor-month (month year dir &optional event) |
94ce0230 GM |
412 | "Write an HTML calendar file for numeric MONTH of four-digit YEAR. |
413 | The output directory DIR is created if necessary. Interactively, | |
b40f3832 GM |
414 | MONTH and YEAR are taken from the calendar cursor position, or from |
415 | the position specified by EVENT. Note that any existing output files | |
416 | are overwritten." | |
417 | (interactive (let* ((event last-nonmenu-event) | |
418 | (date (calendar-cursor-to-date t event)) | |
e803eab7 GM |
419 | (month (calendar-extract-month date)) |
420 | (year (calendar-extract-year date))) | |
b40f3832 | 421 | (list month year (cal-html-year-dir-ask-user year) event))) |
94ce0230 GM |
422 | (make-directory dir t) |
423 | (cal-html-one-month month year dir)) | |
424 | ||
d3a0e5bf | 425 | ;;;###cal-autoload |
b40f3832 | 426 | (defun cal-html-cursor-year (year dir &optional event) |
94ce0230 GM |
427 | "Write HTML calendar files (index and monthly pages) for four-digit YEAR. |
428 | The output directory DIR is created if necessary. Interactively, | |
b40f3832 GM |
429 | YEAR is taken from the calendar cursor position, or from the position |
430 | specified by EVENT. Note that any existing output files are overwritten." | |
431 | (interactive (let* ((event last-nonmenu-event) | |
432 | (year (calendar-extract-year | |
433 | (calendar-cursor-to-date t event)))) | |
434 | (list year (cal-html-year-dir-ask-user year) event))) | |
94ce0230 GM |
435 | (make-directory dir t) |
436 | (with-temp-buffer | |
437 | (cal-html-insert-year-minicals year cal-html-year-index-cols) | |
438 | (write-file (expand-file-name "index.html" dir))) | |
439 | (dotimes (i 12) | |
440 | (cal-html-one-month (1+ i) year dir))) | |
441 | ||
442 | ||
443 | (provide 'cal-html) | |
444 | ||
94ce0230 | 445 | ;;; cal-html.el ends here |