/usr/share/emacs/site-lisp/emacs-calfw/calfw-cal.el is in emacs-calfw 1.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | ;;; calfw-cal.el --- calendar view for emacs diary
;; Copyright (C) 2011 SAKURAI Masashi
;; Author: SAKURAI Masashi <m.sakurai at kiwanami.net>
;; Keywords: calendar
;; 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 3 of the License, 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.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Display diary items in the calfw buffer.
;; (require 'calfw-cal)
;;
;; M-x cfw:open-diary-calendar
;; Key binding
;; i : insert an entry on the date
;; RET or Click : jump to the entry
;; q : kill-buffer
;; Thanks for furieux's initial code.
;;; Code:
(require 'calfw)
(require 'calendar)
(defvar cfw:cal-diary-regex
(let ((time "[[:digit:]]\\{2\\}:[[:digit:]]\\{2\\}")
(blanks "[[:blank:]]*"))
(concat "\\(" time "\\)?"
"\\(?:" blanks "-" blanks "\\(" time "\\)\\)?"
blanks "\\(.*\\)"))
"Regex extracting start/end time and title from a diary string")
(defun cfw:cal-entry-to-event (date string)
"[internal] Add text properties to string, allowing calfw to act on it."
(let* ((lines (split-string
(replace-regexp-in-string
"[\t ]+" " " (cfw:trim string))
"\n"))
(first (car lines))
(desc (mapconcat 'identity (cdr lines) "\n"))
(title (progn
(string-match cfw:cal-diary-regex first)
(match-string 3 first)))
(start (match-string 1 first))
(end (match-string 2 first))
(properties (list 'mouse-face 'highlight
'help-echo string
'cfw-marker (copy-marker (point-at-bol)))))
(make-cfw:event :title (apply 'propertize title properties)
:start-date date
:start-time (when start
(cfw:parse-str-time start))
:end-time (when end
(cfw:parse-str-time end))
:description (apply 'propertize desc properties))))
(defun cfw:cal-onclick ()
"Jump to the clicked diary item."
(interactive)
(let ((marker (get-text-property (point) 'cfw-marker)))
(when (and marker (marker-buffer marker))
(switch-to-buffer (marker-buffer marker))
(goto-char (marker-position marker)))))
(defvar cfw:cal-text-keymap
(let ((map (make-sparse-keymap)))
(define-key map [mouse-1] 'cfw:cal-onclick)
(define-key map (kbd "<return>") 'cfw:cal-onclick)
map)
"key map on the calendar item text.")
(defun cfw:cal-schedule-period-to-calendar (begin end)
"[internal] Return calfw calendar items between BEGIN and END
from the diary schedule data."
(let ((all (diary-list-entries
begin
(1+ (cfw:days-diff begin end)) t))
non-periods
periods)
(loop for i in all
for date = (car i)
for title = (nth 1 i)
for date-spec = (nth 2 i)
for dmarker = (nth 3 i)
for pspec = (cons date-spec title)
do
(if (string-match "%%(diary-block" date-spec)
(unless (member pspec periods)
(push pspec periods))
(push i non-periods)))
(append
(loop
for (date string . rest) in non-periods
collect (cfw:cal-entry-to-event date string))
(list (cons 'periods
(map 'list (function (lambda (period)
(let ((spec (read (substring (car period) 2))))
(list (list (nth 1 spec)
(nth 2 spec)
(nth 3 spec))
(list (nth 4 spec)
(nth 5 spec)
(nth 6 spec))
(cdr period)))))
periods))))))
(defvar cfw:cal-schedule-map
(cfw:define-keymap
'(
("q" . kill-buffer)
("i" . cfw:cal-from-calendar)
))
"Key map for the calendar buffer.")
(defun cfw:cal-create-source (&optional color)
"Create diary calendar source."
(make-cfw:source
:name "calendar diary"
:color (or color "SaddleBrown")
:data 'cfw:cal-schedule-period-to-calendar))
(defun cfw:open-diary-calendar ()
"Open the diary schedule calendar in the new buffer."
(interactive)
(save-excursion
(let* ((source1 (cfw:cal-create-source))
(cp (cfw:create-calendar-component-buffer
:view 'month
:custom-map cfw:cal-schedule-map
:contents-sources (list source1))))
(switch-to-buffer (cfw:cp-get-buffer cp)))))
(defun cfw:cal-from-calendar ()
"Insert a new item. This command should be executed on the calfw calendar."
(interactive)
(let* ((mdy (cfw:cursor-to-nearest-date))
(m (calendar-extract-month mdy))
(d (calendar-extract-day mdy))
(y (calendar-extract-year mdy)))
(diary-make-entry (calendar-date-string (cfw:date m d y) t t))
))
;; (progn (eval-current-buffer) (cfw:open-diary-calendar))
(provide 'calfw-cal)
;;; calfw-cal.el ends here
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