[PATCH] CVS Emacs syncs for calendar

Jeff Miller jmiller at cablespeed.com
Sat Nov 11 18:59:07 EST 2006


       Fixes for determination of Daylight Saving Time start/stop.
       Addition of cal-html, creates web pages from your diary
       entries.
           
   
       I intend to commit this tomorrow (Nov 12).

Jeff

ChangeLog addition:

2006-11-11  Jeff Miller  <jeff.miller at xemacs.org>

        * calendar/cal-dst.el: Do not assume DST starts/ends on the same
        date in every year.
        (calendar-dst-check-each-year-flag): New customizable variable.
        (calendar-dst-find-data): New function, extracted from
        calendar-current-time-zone.
        (calendar-current-time-zone): Use calendar-dst-find-data.
        (calendar-dst-transition-cache): New variable.
        (calendar-dst-find-startend, calendar-dst-starts)
        (calendar-dst-ends): New functions.
        (calendar-daylight-savings-starts)
        (calendar-daylight-savings-ends): Change value to use
        calendar-dst-starts, calendar-dst-ends; respectively.

        * calendar/calendar.el (cal-html-cursor-month)
        (cal-html-cursor-year): Add autoloads for this new package.
        (calendar-mode-map): Bind cal-html-cursor-month,
        cal-html-cursor-year.

        * calendar/cal-html.el: New file.

        * calendar/calendar.el (european-calendar-style): Call
        european-calendar or american-calendar as needed when set.
        (diary-view-entries, list-calendar-holidays): Move autoloads
        before use.


calendar source patch:
Diff command:   cvs -q diff -uN
Files affected: calendar.el cal-html.el cal-dst.el Makefile

Index: Makefile
===================================================================
RCS file: /pack/xemacscvs/XEmacs/packages/xemacs-packages/calendar/Makefile,v
retrieving revision 1.36
diff -u -u -r1.36 Makefile
--- Makefile	2006/10/31 08:35:27	1.36
+++ Makefile	2006/11/11 23:53:28
@@ -31,7 +31,8 @@
 	cal-xemacs.elc calendar.elc diary-lib.elc holidays.elc cal-tex.elc \
 	cal-hebrew.elc cal-islam.elc cal-iso.elc cal-move.elc cal-persia.elc\
 	cal-china.elc cal-coptic.elc cal-julian.elc lunar.elc solar.elc \
-        todo-mode.elc timeclock.elc cal-bahai.elc icalendar.elc cal-compat.elc
+        todo-mode.elc timeclock.elc cal-bahai.elc icalendar.elc cal-compat.elc \
+	cal-html.elc
 
 ifeq ($(BUILD_WITHOUT_MULE),)
 ELCS += cal-japanese.elc
Index: cal-dst.el
===================================================================
RCS file: /pack/xemacscvs/XEmacs/packages/xemacs-packages/calendar/cal-dst.el,v
retrieving revision 1.6
diff -u -u -r1.6 cal-dst.el
--- cal-dst.el	2006/10/23 01:25:28	1.6
+++ cal-dst.el	2006/11/11 23:53:28
@@ -44,6 +44,16 @@
 (require 'calendar)
 (require 'cal-persia)
 
+(defcustom calendar-dst-check-each-year-flag t
+  "Non-nil means to check each year for DST transitions as needed.
+Otherwise assume the next two transitions found after the
+current date apply to all years.  This is faster, but not always
+correct, since the dates of Daylight Saving transitions sometimes
+change."
+:type 'boolean
+:version "22.1"
+:group 'calendar)
+
 (defvar calendar-current-time-zone-cache nil
   "Cache for result of calendar-current-time-zone.")
 
@@ -201,6 +211,74 @@
 	  (cdr candidate-rules)))
     (car candidate-rules)))
 
+;; TODO it might be better to extract this information directly from
+;; the system timezone database. But cross-platform...?
+;; See thread
+;; http://lists.gnu.org/archive/html/emacs-pretest-bug/2006-11/msg00060.html
+(defun calendar-dst-find-data (&optional time)
+  "Find data on the first Daylight Saving Time transitions after TIME.
+TIME defaults to `current-time'.  Return value is as described
+for `calendar-current-time-zone'."
+  (let* ((t0 (or time (current-time)))
+         (t0-zone (current-time-zone t0))
+         (t0-utc-diff (car t0-zone))
+         (t0-name (car (cdr t0-zone))))
+    (if (not t0-utc-diff)
+        ;; Little or no time zone information is available.
+        (list nil nil t0-name t0-name nil nil nil nil)
+      (let* ((t1 (calendar-next-time-zone-transition t0))
+             (t2 (and t1 (calendar-next-time-zone-transition t1))))
+        (if (not t2)
+            ;; This locale does not have daylight savings time.
+            (list (/ t0-utc-diff 60) 0 t0-name t0-name nil nil 0 0)
+          ;; Use heuristics to find daylight savings parameters.
+          (let* ((t1-zone (current-time-zone t1))
+                 (t1-utc-diff (car t1-zone))
+                 (t1-name (car (cdr t1-zone)))
+                 (t1-date-sec (calendar-absolute-from-time t1 t0-utc-diff))
+                 (t2-date-sec (calendar-absolute-from-time t2 t1-utc-diff))
+                 ;; TODO When calendar-dst-check-each-year-flag is non-nil,
+                 ;; the rules can be simpler than they currently are.
+                 (t1-rules (calendar-time-zone-daylight-rules
+                            (car t1-date-sec) t0-utc-diff))
+                 (t2-rules (calendar-time-zone-daylight-rules
+                            (car t2-date-sec) t1-utc-diff))
+                 (t1-time (/ (cdr t1-date-sec) 60))
+                 (t2-time (/ (cdr t2-date-sec) 60)))
+            (cons
+             (/ (min t0-utc-diff t1-utc-diff) 60)
+             (cons
+              (/ (abs (- t0-utc-diff t1-utc-diff)) 60)
+              (if (< t0-utc-diff t1-utc-diff)
+                  (list t0-name t1-name t1-rules t2-rules t1-time t2-time)
+                (list t1-name t0-name t2-rules t1-rules t2-time t1-time)
+                )))))))))
+
+(defvar calendar-dst-transition-cache nil
+  "Internal cal-dst variable storing date of Daylight Saving Time transitions.
+Value is a list with elements of the form (YEAR START END), where
+START and END are expressions that when evaluated return the
+start and end dates (respectively) for DST in YEAR. Used by the
+function `calendar-dst-find-startend'.")
+
+(defun calendar-dst-find-startend (year)
+  "Find the dates in YEAR on which Daylight Saving Time starts and ends.
+Returns a list (YEAR START END), where START and END are
+expressions that when evaluated return the start and end dates,
+respectively. This function first attempts to use pre-calculated
+data from `calendar-dst-transition-cache', otherwise it calls
+`calendar-dst-find-data' (and adds the results to the cache)."
+  (let ((e (assoc year calendar-dst-transition-cache))
+        f)
+    (or e
+        (progn
+          (setq e (calendar-dst-find-data (encode-time 1 0 0 1 1 year))
+                f (nth 4 e)
+                e (list year f (nth 5 e))
+                calendar-dst-transition-cache
+                (append calendar-dst-transition-cache (list e)))
+          e))))
+
 (defun calendar-current-time-zone ()
   "Return UTC difference, dst offset, names and rules for current time zone.
 
@@ -228,42 +306,8 @@
 Some operating systems cannot provide all this information to Emacs; in this
 case, `calendar-current-time-zone' returns a list containing nil for the data
 it can't find."
-  (or
-   calendar-current-time-zone-cache
-   (setq
-    calendar-current-time-zone-cache
-    (let* ((t0 (current-time))
-	   (t0-zone (current-time-zone t0))
-	   (t0-utc-diff (car t0-zone))
-	   (t0-name (car (cdr t0-zone))))
-      (if (not t0-utc-diff)
-	  ;; Little or no time zone information is available.
-	  (list nil nil t0-name t0-name nil nil nil nil)
-	(let* ((t1 (calendar-next-time-zone-transition t0))
-	       (t2 (and t1 (calendar-next-time-zone-transition t1))))
-	  (if (not t2)
-	      ;; This locale does not have daylight savings time.
-	      (list (/ t0-utc-diff 60) 0 t0-name t0-name nil nil 0 0)
-	    ;; Use heuristics to find daylight savings parameters.
-	    (let* ((t1-zone (current-time-zone t1))
-		   (t1-utc-diff (car t1-zone))
-		   (t1-name (car (cdr t1-zone)))
-		   (t1-date-sec (calendar-absolute-from-time t1 t0-utc-diff))
-		   (t2-date-sec (calendar-absolute-from-time t2 t1-utc-diff))
-		   (t1-rules (calendar-time-zone-daylight-rules
-			      (car t1-date-sec) t0-utc-diff))
-		   (t2-rules (calendar-time-zone-daylight-rules
-			      (car t2-date-sec) t1-utc-diff))
-		   (t1-time (/ (cdr t1-date-sec) 60))
-		   (t2-time (/ (cdr t2-date-sec) 60)))
-	      (cons
-	       (/ (min t0-utc-diff t1-utc-diff) 60)
-	       (cons
-		(/ (abs (- t0-utc-diff t1-utc-diff)) 60)
-		(if (< t0-utc-diff t1-utc-diff)
-		    (list t0-name t1-name t1-rules t2-rules t1-time t2-time)
-		    (list t1-name t0-name t2-rules t1-rules t2-time t1-time)
-		    )))))))))))
+  (unless calendar-current-time-zone-cache
+    (setq calendar-current-time-zone-cache (calendar-dst-find-data))))
 
 ;;; The following eight defvars relating to daylight savings time should NOT be
 ;;; marked to go into loaddefs.el where they would be evaluated when Emacs is
@@ -295,12 +339,32 @@
   "*Abbreviated name of daylight-savings time zone at `calendar-location-name'.
 For example, \"EDT\" in New York City, \"PDT\" for Los Angeles.")
 
+
+(defun calendar-dst-starts (year)
+  "Return the date of YEAR on which Daylight Saving Time starts.
+This function respects the value of `calendar-dst-check-each-year-flag'."
+  (or (let ((expr (if calendar-dst-check-each-year-flag
+                      (cadr (calendar-dst-find-startend year))
+                    (nth 4 calendar-current-time-zone-cache))))
+        (if expr (eval expr)))
+      (and (not (zerop calendar-daylight-time-offset))
+           (calendar-nth-named-day 1 0 4 year))))
+
+(defun calendar-dst-ends (year)
+  "Return the date of YEAR on which Daylight Saving Time ends.
+This function respects the value of `calendar-dst-check-each-year-flag'."
+  (or (let ((expr (if calendar-dst-check-each-year-flag
+                      (nth 2 (calendar-dst-find-startend year))
+                    (nth 5 calendar-current-time-zone-cache))))
+        (if expr (eval expr)))
+      (and (not (zerop calendar-daylight-time-offset))
+           (calendar-nth-named-day -1 0 10 year))))
+
+
 ;;;###autoload
 (put 'calendar-daylight-savings-starts 'risky-local-variable t)
 (defvar calendar-daylight-savings-starts
-  (or (car (nthcdr 4 calendar-current-time-zone-cache))
-      (and (not (zerop calendar-daylight-time-offset))
-	   '(calendar-nth-named-day 1 0 4 year)))
+  '(calendar-dst-starts year)
   "*Sexp giving the date on which daylight savings time starts.
 This is an expression in the variable `year' whose value gives the Gregorian
 date in the form (month day year) on which daylight savings time starts.  It is
@@ -321,9 +385,7 @@
 ;;;###autoload
 (put 'calendar-daylight-savings-ends 'risky-local-variable t)
 (defvar calendar-daylight-savings-ends
-  (or (car (nthcdr 5 calendar-current-time-zone-cache))
-      (and (not (zerop calendar-daylight-time-offset))
-	   '(calendar-nth-named-day -1 0 10 year)))
+  '(calendar-dst-ends year)
   "*Sexp giving the date on which daylight savings time ends.
 This is an expression in the variable `year' whose value gives the Gregorian
 date in the form (month day year) on which daylight savings time ends.  It is
Index: cal-html.el
===================================================================
RCS file: cal-html.el
diff -N cal-html.el
--- /dev/null	Sun Nov 12 00:53:25 2006
+++ cal-html.el	Sun Nov 12 00:53:28 2006
@@ -0,0 +1,445 @@
+;;; cal-html.el --- functions for printing HTML calendars
+
+;; Copyright (C) 2002, 2003, 2004, 2005, 2006  Free Software Foundation, Inc.
+
+;; Author: Anna M. Bigatti <bigatti at dima.unige.it>
+;; Keywords: calendar
+;; Human-Keywords: calendar, diary, HTML
+;; Created: 23 Aug 2002
+
+;; This file is part of XEmacs.
+
+;; XEmacs 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 2, or (at your option)
+;; any later version.
+
+;; XEmacs 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.
+
+;; You should have received a copy of the GNU General Public License
+;; along with XEmacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+
+;;; Commentary:
+
+;; This package writes HTML calendar files using the user's diary
+;; file.  See the XEmacs manual for details.
+
+
+;;; Code:
+
+(require 'calendar)
+
+
+(defgroup calendar-html nil
+  "Options for HTML calendars."
+:prefix "cal-html-"
+:group 'calendar)
+
+(defcustom cal-html-directory "~/public_html"
+  "Directory for HTML pages generated by cal-html."
+:type 'string
+:group 'calendar-html)
+
+(defcustom cal-html-print-day-number-flag nil
+  "Non-nil means print the day-of-the-year number in the monthly cal-html page."
+:type 'boolean
+:group 'calendar-html)
+
+(defcustom cal-html-year-index-cols 3
+  "Number of columns in the cal-html yearly index page."
+:type 'integer
+:group 'calendar-html)
+
+(defcustom cal-html-day-abbrev-array
+  (calendar-abbrev-construct calendar-day-abbrev-array
+                             calendar-day-name-array)
+  "Array of seven strings for abbreviated day names (starting with Sunday)."
+:type '(vector string string string string string string string)
+:group 'calendar-html)
+
+(defcustom cal-html-css-default
+  (concat
+   "<STYLE TYPE=\"text/css\">\n"
+   "  BODY { background: #bde; }\n"
+   "  H1   { text-align: center; }\n"
+   "  TABLE  { padding: 2pt; }\n"
+   "  TH { background: #dee; }\n"
+   "  TABLE.year   { width: 100%; }\n"
+   "  TABLE.agenda { width: 100%; }\n"
+   "  TABLE.header { width: 100%; text-align: center; }\n"
+   "  TABLE.minical TD { background: white; text-align: center; }\n"
+   "  TABLE.agenda TD  { background: white; text-align: left; }\n"
+   "  TABLE.agenda TH  { text-align: left; width: 20%; }\n"
+   "  SPAN.NO-YEAR  { color: #0b3; font-weight: bold; }\n"
+   "  SPAN.ANN      { color: #0bb; font-weight: bold; }\n"
+   "  SPAN.BLOCK    { color: #048; font-style: italic; }\n"
+   "</STYLE>\n\n")
+  "Default cal-html css style.  You can override this with a \"cal.css\" file."
+:type 'string
+:group 'calendar-html)
+
+;;; End customizable variables.
+
+
+;;; HTML and CSS code constants.
+
+(defconst cal-html-e-document-string "<BR><BR>\n</BODY>\n</HTML>"
+  "HTML code for end of page.")
+
+(defconst cal-html-b-tablerow-string "<TR>\n"
+  "HTML code for beginning of table row.")
+
+(defconst cal-html-e-tablerow-string "</TR>\n"
+  "HTML code for end of table row.")
+
+(defconst cal-html-b-tabledata-string "  <TD>"
+  "HTML code for beginning of table data.")
+
+(defconst cal-html-e-tabledata-string "  </TD>\n"
+  "HTML code for end of table data.")
+
+(defconst cal-html-b-tableheader-string "  <TH>"
+  "HTML code for beginning of table header.")
+
+(defconst cal-html-e-tableheader-string "  </TH>\n"
+  "HTML code for end of table header.")
+
+(defconst cal-html-e-table-string
+  "</TABLE>\n<!-- ================================================== -->\n"
+  "HTML code for end of table.")
+
+(defconst cal-html-minical-day-format "  <TD><a href=%s#%d>%d</TD>\n"
+  "HTML code for a day in the minical - links NUM to month-page#NUM.")
+
+(defconst cal-html-b-document-string
+  (concat
+   "<HTML>\n"
+   "<HEAD>\n"
+   "<TITLE>Calendar</TITLE>\n"
+   "<!--This buffer was produced by cal-html.el-->\n\n"
+   cal-html-css-default
+   "<LINK REL=\"stylesheet\" TYPE=\"text/css\" HREF=\"cal.css\">\n"
+   "</HEAD>\n\n"
+   "<BODY>\n\n")
+  "Initial block for html page.")
+
+(defconst cal-html-html-subst-list
+  '(("&" . "&amp;")
+    ("\n" . "<BR>\n"))
+  "Alist of symbols and their HTML replacements.")
+
+
+
+(defun cal-html-comment (string)
+  "Return STRING as html comment."
+  (format "<!--  ======  %s  ======  -->\n"
+          (replace-regexp-in-string "--" "++" string)))
+
+(defun cal-html-href (link string)
+  "Return a hyperlink to url LINK with text STRING."
+  (format "<A HREF=\"%s\">%s</A>" link string))
+
+(defun cal-html-h3 (string)
+  "Return STRING as html header h3."
+  (format "\n        <H3>%s</H3>\n" string))
+
+(defun cal-html-h1 (string)
+  "Return STRING as html header h1."
+  (format "\n        <H1>%s</H1>\n" string))
+
+(defun cal-html-th (string)
+  "Return STRING as html table header."
+  (format "%s%s%s" cal-html-b-tableheader-string string
+          cal-html-e-tableheader-string))
+
+(defun cal-html-b-table (arg)
+  "Return table tag with attribute ARG."
+  (format "\n<TABLE %s>\n" arg))
+
+(defun cal-html-monthpage-name (month year)
+  "Return name of html page for numeric MONTH and four-digit YEAR.
+For example, \"2006-08.html\" for 8 2006."
+  (format "%d-%.2d.html" year month))
+
+
+(defun cal-html-insert-link-monthpage (month year &optional change-dir)
+  "Insert a link to the html page for numeric MONTH and four-digit YEAR.
+If optional argument CHANGE-DIR is non-nil and MONTH is 1 or 2,
+the link points to a different year and so has a directory part."
+  (insert (cal-html-h3
+           (cal-html-href
+            (concat (and change-dir
+                         (member month '(1 12))
+                         (format "../%d/" year))
+                    (cal-html-monthpage-name month year))
+            (calendar-month-name month)))))
+
+
+(defun cal-html-insert-link-yearpage (month year)
+  "Insert a link to index page for four-digit YEAR, tagged using MONTH name."
+  (insert (cal-html-h1
+           (format "%s %s"
+                   (calendar-month-name month)
+                   (cal-html-href "index.html" (number-to-string year))))))
+
+
+(defun cal-html-year-dir-ask-user (year)
+  "Prompt for the html calendar output directory for four-digit YEAR.
+Return the expanded directory name, which is based on
+`cal-html-directory' by default."
+  (expand-file-name (read-directory-name
+                     "Enter HTML calendar directory name: "
+                     (expand-file-name (format "%d" year)
+                                       cal-html-directory))))
+
+;;------------------------------------------------------------
+;; page header
+;;------------------------------------------------------------
+(defun cal-html-insert-month-header (month year)
+  "Insert the header for the numeric MONTH page for four-digit YEAR.
+Contains links to previous and next month and year, and current minical."
+  (insert (cal-html-b-table "class=header"))
+  (insert cal-html-b-tablerow-string)
+  (insert cal-html-b-tabledata-string)          ; month links
+  (increment-calendar-month month year -1)      ; previous month
+  (cal-html-insert-link-monthpage month year t) ; t --> change-dir
+  (increment-calendar-month month year 1)       ; current month
+  (cal-html-insert-link-yearpage month year)
+  (increment-calendar-month month year 1)       ; next month
+  (cal-html-insert-link-monthpage month year t) ; t --> change-dir
+  (insert cal-html-e-tabledata-string)
+  (insert cal-html-b-tabledata-string)  ; minical
+  (increment-calendar-month month year -1)
+  (cal-html-insert-minical month year)
+  (insert cal-html-e-tabledata-string)
+  (insert cal-html-e-tablerow-string)   ; end
+  (insert cal-html-e-table-string))
+
+;;------------------------------------------------------------
+;; minical: a small month calendar with links
+;;------------------------------------------------------------
+(defun cal-html-insert-minical (month year)
+  "Insert a minical for numeric MONTH of YEAR."
+  (let* ((blank-days                    ; at start of month
+          (mod (- (calendar-day-of-week (list month 1 year))
+                  calendar-week-start-day)
+               7))
+         (last (calendar-last-day-of-month month year))
+         (end-blank-days                ; at end of month
+          (mod (- 6 (- (calendar-day-of-week (list month last year))
+                       calendar-week-start-day))
+               7))
+         (monthpage-name (cal-html-monthpage-name month year))
+         date)
+    ;; Start writing table.
+    (insert (cal-html-comment "MINICAL")
+            (cal-html-b-table "class=minical border=1 align=center"))
+    ;; Weekdays row.
+    (insert cal-html-b-tablerow-string)
+    (dotimes (i 7)
+      (insert (cal-html-th
+               (aref cal-html-day-abbrev-array
+                     (mod (+ i calendar-week-start-day) 7)))))
+    (insert cal-html-e-tablerow-string)
+    ;; Initial empty slots.
+    (insert cal-html-b-tablerow-string)
+    (dotimes (i blank-days)
+      (insert
+       cal-html-b-tabledata-string
+       cal-html-e-tabledata-string))
+    ;; Numbers.
+    (dotimes (i last)
+      (insert (format cal-html-minical-day-format monthpage-name i (1+ i)))
+      ;; New row?
+      (if (and (zerop (mod (+ i 1 blank-days) 7))
+               (/= (1+ i) last))
+          (insert cal-html-e-tablerow-string
+                  cal-html-b-tablerow-string)))
+    ;; End empty slots (for some browsers like konqueror).
+    (dotimes (i end-blank-days)
+      (insert
+       cal-html-b-tabledata-string
+       cal-html-e-tabledata-string)))
+  (insert cal-html-e-tablerow-string
+          cal-html-e-table-string
+          (cal-html-comment "MINICAL end")))
+
+
+;;------------------------------------------------------------
+;; year index page with minicals
+;;------------------------------------------------------------
+(defun cal-html-insert-year-minicals (year cols)
+  "Make a one page yearly mini-calendar for four-digit YEAR.
+There are 12/cols rows of COLS months each."
+  (insert cal-html-b-document-string)
+  (insert (cal-html-h1 (number-to-string year)))
+  (insert (cal-html-b-table "class=year")
+          cal-html-b-tablerow-string)
+  (dotimes (i 12)
+    (insert cal-html-b-tabledata-string)
+    (cal-html-insert-link-monthpage (1+ i) year)
+    (cal-html-insert-minical (1+ i) year)
+    (insert cal-html-e-tabledata-string)
+    (if (zerop (mod (1+ i) cols))
+        (insert cal-html-e-tablerow-string
+                cal-html-b-tablerow-string)))
+  (insert cal-html-e-tablerow-string
+          cal-html-e-table-string
+          cal-html-e-document-string))
+
+
+;;------------------------------------------------------------
+;; HTMLify
+;;------------------------------------------------------------
+
+(defun cal-html-htmlify-string (string)
+  "Protect special characters in STRING from HTML.
+Characters are replaced according to `cal-html-html-subst-list'."
+  (if (stringp string)
+      (replace-regexp-in-string
+       (regexp-opt (mapcar 'car cal-html-html-subst-list))
+       (lambda (x)
+         (cdr (assoc x cal-html-html-subst-list)))
+       string)
+    ""))
+
+
+(defun cal-html-htmlify-entry (entry)
+  "Convert a diary entry ENTRY to html with the appropriate class specifier."
+  (let ((start
+         (cond
+          ((string-match "block" (car (cddr entry))) "BLOCK")
+          ((string-match "anniversary" (car (cddr entry))) "ANN")
+          ((not (string-match
+                 (number-to-string (car (cddr (car entry))))
+                 (car (cddr entry))))
+           "NO-YEAR")
+          (t "NORMAL"))))
+    (format "<span class=%s>%s</span>" start
+            (cal-html-htmlify-string (cadr entry)))))
+
+
+(defun cal-html-htmlify-list (date-list date)
+  "Return a string of concatenated, HTMLified diary entries.
+DATE-LIST is a list of diary entries.  Return only those matching DATE."
+  (mapconcat (lambda (x) (cal-html-htmlify-entry x))
+             (let (result)
+               (dolist (p date-list (reverse result))
+                 (and (car p)
+                      (calendar-date-equal date (car p))
+                      (setq result (cons p result)))))
+               "<BR>\n     "))
+
+
+;;------------------------------------------------------------
+;;  Monthly calendar
+;;------------------------------------------------------------
+
+(autoload 'diary-list-entries "diary-lib" nil t)
+
+(defun cal-html-list-diary-entries (d1 d2)
+  "Generate a list of all diary-entries from absolute date D1 to D2."
+  (let (diary-display-hook)
+    (diary-list-entries
+     (calendar-gregorian-from-absolute d1)
+     (1+ (- d2 d1)))))
+
+
+(defun cal-html-insert-agenda-days (month year diary-list)
+  "Insert HTML commands for a range of days in monthly calendars.
+HTML commands are inserted for the days of the numeric MONTH in
+four-digit YEAR.  Diary entries in DIARY-LIST are included."
+  (let ((blank-days                     ; at start of month
+         (mod (- (calendar-day-of-week (list month 1 year))
+                 calendar-week-start-day)
+              7))
+        (last (calendar-last-day-of-month month year))
+        date)
+    (insert "<a name=0>\n")
+    (insert (cal-html-b-table "class=agenda border=1"))
+    (dotimes (i last)
+      (setq date (list month (1+ i) year))
+      (insert
+       (format "<a name=%d></a>\n" (1+ i)) ; link
+       cal-html-b-tablerow-string
+       ;; Number & day name.
+       cal-html-b-tableheader-string
+       (if cal-html-print-day-number-flag
+           (format "<em>%d</em>&nbsp;&nbsp;"
+                   (calendar-day-number date))
+         "")
+       (format "%d&nbsp;%s" (1+ i)
+               (aref calendar-day-name-array
+                     (calendar-day-of-week date)))
+       cal-html-e-tableheader-string
+       ;; Diary entries.
+       cal-html-b-tabledata-string
+       (cal-html-htmlify-list diary-list date)
+       cal-html-e-tabledata-string
+       cal-html-e-tablerow-string)
+      ;; If end of week and not end of month, make new table.
+      (if (and (zerop (mod (+ i 1 blank-days) 7))
+               (/= (1+ i) last))
+          (insert cal-html-e-table-string
+                  (cal-html-b-table
+                   "class=agenda border=1")))))
+  (insert cal-html-e-table-string))
+
+
+(defun cal-html-one-month (month year dir)
+  "Write an HTML calendar file for numeric MONTH of YEAR in directory DIR."
+  (let ((diary-list (cal-html-list-diary-entries
+                     (calendar-absolute-from-gregorian (list month 1 year))
+                     (calendar-absolute-from-gregorian
+                      (list month
+                            (calendar-last-day-of-month month year)
+                            year)))))
+    (with-temp-buffer
+      (insert cal-html-b-document-string)
+      (cal-html-insert-month-header month year)
+      (cal-html-insert-agenda-days month year diary-list)
+      (insert cal-html-e-document-string)
+      (write-file (expand-file-name
+                   (cal-html-monthpage-name month year) dir)))))
+
+
+;;; User commands.
+
+(defun cal-html-cursor-month (month year dir)
+  "Write an HTML calendar file for numeric MONTH of four-digit YEAR.
+The output directory DIR is created if necessary.  Interactively,
+MONTH and YEAR are taken from the calendar cursor position.  Note
+that any existing output files are overwritten."
+  (interactive (let* ((date (calendar-cursor-to-date t))
+                      (month (extract-calendar-month date))
+                      (year (extract-calendar-year date)))
+                 (list month year (cal-html-year-dir-ask-user year))))
+  (make-directory dir t)
+  (cal-html-one-month month year dir))
+
+(defun cal-html-cursor-year (year dir)
+  "Write HTML calendar files (index and monthly pages) for four-digit YEAR.
+The output directory DIR is created if necessary.  Interactively,
+YEAR is taken from the calendar cursor position.  Note that any
+existing output files are overwritten."
+  (interactive (let ((year (extract-calendar-year
+                            (calendar-cursor-to-date t))))
+                 (list year (cal-html-year-dir-ask-user year))))
+  (make-directory dir t)
+  (with-temp-buffer
+    (cal-html-insert-year-minicals year cal-html-year-index-cols)
+    (write-file (expand-file-name "index.html" dir)))
+  (dotimes (i 12)
+    (cal-html-one-month (1+ i) year dir)))
+
+
+(provide 'cal-html)
+
+
+;; arch-tag: 4e73377d-d2c1-46ea-a103-02c111da5f57
+;;; cal-html.el ends here
Index: calendar.el
===================================================================
RCS file: /pack/xemacscvs/XEmacs/packages/xemacs-packages/calendar/calendar.el,v
retrieving revision 1.11
diff -u -u -r1.11 calendar.el
--- calendar.el	2006/10/23 01:25:29	1.11
+++ calendar.el	2006/11/11 23:53:28
@@ -571,11 +571,20 @@
 
 Names can be capitalized or not, written in full (as specified by the
 variable `calendar-day-name-array'), or abbreviated (as specified by
-`calendar-day-abbrev-array') with or without a period.  To take effect,
-this variable should be set before the calendar package and its associates
-are loaded.  Otherwise, use one of the functions `european-calendar' or
-`american-calendar' to force the appropriate update."
+`calendar-day-abbrev-array') with or without a period.
+
+Setting this variable directly does not take effect (if the
+calendar package is already loaded).  Rather, use either
+\\[customize] or the functions `european-calendar' and
+`american-calendar'."
   :type 'boolean
+  ;; Without :initialize (require 'calendar) throws an error because
+  ;; american-calendar is undefined at this point.
+:initialize 'custom-initialize-default
+:set (lambda (symbol value)
+         (if value
+             (european-calendar)
+           (american-calendar)))
   :group 'diary)
 
 ;;;###autoload
@@ -1586,6 +1595,19 @@
          (calendar-only-one-frame-setup arg))
         (t (calendar-basic-setup arg))))
 
+(autoload 'diary-view-entries "diary-lib"
+  "Prepare and display a buffer with diary entries.
+Searches your diary file for entries that match ARG days starting with
+the date indicated by the cursor position in the displayed three-month
+calendar."
+  t)
+
+(autoload 'list-calendar-holidays "holidays"
+  "Create a buffer containing the holidays for the current calendar window.
+The holidays are those in the list `calendar-notable-days'.  Returns t if any
+holidays are found, nil if not."
+  t)
+
 (defun calendar-basic-setup (&optional arg)
   "Display a three-month calendar in another window.
 The three months appear side by side, with the current month in the middle
@@ -1653,13 +1675,6 @@
         (list-calendar-holidays)))
   (run-hooks 'initial-calendar-window-hook))
 
-(autoload 'diary-view-entries "diary-lib"
-  "Prepare and display a buffer with diary entries.
-Searches your diary file for entries that match ARG days starting with
-the date indicated by the cursor position in the displayed three-month
-calendar."
-  t)
-
 (autoload 'view-other-diary-entries "diary-lib"
   "Prepare and display buffer of diary entries from an alternative diary file.
 Searches for entries that match ARG days, starting with the date indicated
@@ -1934,12 +1949,6 @@
 to the date indicated by point."
   t)
 
-(autoload 'list-calendar-holidays "holidays"
-  "Create a buffer containing the holidays for the current calendar window.
-The holidays are those in the list `calendar-notable-days'.  Returns t if any
-holidays are found, nil if not."
-  t)
-
 (autoload 'cal-tex-cursor-month "cal-tex"
   "Make a buffer with LaTeX commands for the month cursor is on.
 Optional prefix argument specifies number of months to be produced.
@@ -2007,6 +2016,18 @@
   "Make a buffer with LaTeX commands for a year's calendar (Filofax).
 Optional prefix argument specifies number of years." t)
 
+(autoload 'cal-html-cursor-month "cal-html"
+  "Write an HTML calendar file for numeric MONTH of four-digit YEAR.
+The output directory DIR is created if necessary.  Interactively,
+MONTH and YEAR are taken from the calendar cursor position.  Note
+that any existing output files are overwritten." t)
+
+(autoload 'cal-html-cursor-year "cal-html"
+  "Write HTML calendar files (index and monthly pages) for four-digit YEAR.
+The output directory DIR is created if necessary.  Interactively,
+YEAR is taken from the calendar cursor position.  Note that any
+existing output files are overwritten." t)
+
 (autoload 'mark-calendar-holidays "holidays"
   "Mark notable days in the calendar window."
   t)
@@ -2294,6 +2315,8 @@
     (define-key map "iBm" 'insert-monthly-bahai-diary-entry)
     (define-key map "iBy" 'insert-yearly-bahai-diary-entry)
     (define-key map "?"   'calendar-goto-info-node)
+    (define-key map "Hm" 'cal-html-cursor-month)
+    (define-key map "Hy" 'cal-html-cursor-year)
     (define-key map "tm" 'cal-tex-cursor-month)
     (define-key map "tM" 'cal-tex-cursor-month-landscape)
     (define-key map "td" 'cal-tex-cursor-day)



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