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;;; world-time-mode.el --- show whole days of world-time diffs
;; Copyright (C) 2013 Nic Ferrier
;; Author: Nic Ferrier <nferrier@ferrier.me.uk>
;; Keywords: tools, calendar
;; Version: 0.0.2
;; 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:
;; Very useful productivity tool if you work in different time zones.
;;; Code:
(require 'cl)
(defun world-time/table-entrys ()
"For listing the entries of the world-time day."
(let ((zones-alist display-time-world-list)
(old-tz (getenv "TZ"))
(max-width 0)
result)
(unwind-protect
(setq result
(loop for i from 0 to 23
collect
(let ((my-time (time-add
(current-time)
(seconds-to-time (* i 3600)))))
(list nil
(loop for zone in zones-alist
vconcat
(progn
(setenv "TZ" (car zone))
(list (format-time-string
"%R %Z" ; display-time-world-time-format
my-time))))))))
(setenv "TZ" old-tz))
result))
(define-derived-mode
world-time-table-mode tabulated-list-mode "World Time"
"Major mode for seeing your world time list as a day."
(setq tabulated-list-entries 'world-time/table-entrys)
(setq tabulated-list-format
[("America/Los_Angeles" 20 nil)
("America/New_York" 20 nil)
("Europe/London" 20 nil)
("Europe/Berlin" 20 nil)
("Asia/Calcutta" 20 nil)])
(tabulated-list-init-header))
;;;###autoload
(defun world-time-list ()
"Show `display-time-world-list' full day comparison."
(interactive)
(with-current-buffer (get-buffer-create "*world-time*")
(world-time-table-mode)
(tabulated-list-print)
(switch-to-buffer (current-buffer))))
(provide 'world-time-mode)
;;; world-time-mode.el ends here
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