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authorjao <jao@gnu.org>2021-02-02 05:16:17 +0000
committerjao <jao@gnu.org>2021-02-02 05:16:17 +0000
commit771abb84830678455de4625ac7f082d8100f0ea0 (patch)
tree0d303c2cb0861b949ca73a9705954f6a69c4f877 /doc/jao-doc-view.el
parent81eceb5507aa0659e9f0c9761e54e9102085c4ac (diff)
downloadelibs-771abb84830678455de4625ac7f082d8100f0ea0.tar.gz
elibs-771abb84830678455de4625ac7f082d8100f0ea0.tar.bz2
libs -> lib/
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-;; jao-doc-view.el -- Remembering visited documents
-
-;; Copyright (c) 2013, 2015, 2017, 2018, 2019 Jose Antonio Ortega Ruiz
-
-;; This file 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 file 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/>.
-
-;; Author: Jose Antonio Ortega Ruiz <jao@gnu.org>
-;; Start date: Fri Feb 15, 2013 01:21
-
-;;; Comentary:
-
-;; Some utilities to keep track of visited documents and the last
-;; visited page.
-
-;;; Code:
-
-(defvar jao-doc-view-bmk-file "~/.emacs.d/doc-view-bmk")
-(defvar jao-doc-view-session-file "~/.emacs.d/doc-view-session")
-(defvar jao-doc-view--current-bmks nil)
-
-(defun jao-doc-view--read-file (file)
- (let ((buff (find-file-noselect file)))
- (ignore-errors
- (with-current-buffer buff
- (goto-char (point-min)))
- (read buff))))
-
-(defun jao-doc-view--save-to-file (file value)
- (with-current-buffer (find-file-noselect file)
- (erase-buffer)
- (insert (format "%S" value))
- (save-buffer)))
-
-(defun jao-doc-view--read-bmks ()
- (let ((bmks (jao-doc-view--read-file jao-doc-view-bmk-file)))
- (if (hash-table-p bmks) bmks (make-hash-table :test 'equal))))
-
-(defun jao-doc-view--current-bmks ()
- (or jao-doc-view--current-bmks
- (setq jao-doc-view--current-bmks (jao-doc-view--read-bmks))))
-
-(defun jao-doc-view-purge-bmks ()
- (interactive)
- (when jao-doc-view--current-bmks
- (maphash (lambda (k v)
- (when (or (not k) (= 1 v) (not (file-exists-p k)))
- (remhash k jao-doc-view--current-bmks)))
- jao-doc-view--current-bmks)))
-
-(defun jao-doc-view-goto-bmk ()
- (interactive)
- (when (eq major-mode 'pdf-view-mode)
- (let* ((bmks (jao-doc-view--current-bmks))
- (fname (buffer-file-name))
- (p (when fname (gethash (expand-file-name fname) bmks 1))))
- (when (and (numberp p) (> p 1))
- (message "Found bookmark at page %d" p)
- (ignore-errors (pdf-view-goto-page p))))))
-
-(defun jao-doc-view-open (file)
- (let* ((buffs (buffer-list))
- (b (catch 'done
- (while buffs
- (when (string-equal (buffer-file-name (car buffs)) file)
- (throw 'done (car buffs)))
- (setq buffs (cdr buffs))))))
- (if b
- (pop-to-buffer b)
- (when (file-exists-p file) (find-file file)))))
-
-(defun jao-doc-view-session (&optional file)
- (let ((file (or file jao-doc-view-session-file)))
- (jao-doc-view--read-file file)))
-
-(defun jao-doc-view-load-session (&optional file)
- (interactive)
- (let ((docs (jao-doc-view-session file)))
- (when (not (listp docs)) (error "Empty session"))
- (dolist (d docs) (other-window 1) (jao-doc-view-open d))))
-
-(defun jao-doc-view--save-bmks ()
- (jao-doc-view-purge-bmks)
- (jao-doc-view--save-to-file jao-doc-view-bmk-file
- (jao-doc-view--current-bmks)))
-
-(defun jao-doc-view--save-bmk (&rest ignored)
- (when (eq major-mode 'pdf-view-mode)
- (ignore-errors
- (puthash (buffer-file-name)
- (max (pdf-view-current-page) 1)
- (jao-doc-view--current-bmks)))))
-
-(defun jao-doc-view-save-session (&optional skip-current)
- (interactive)
- (let ((docs '())
- (cb (when skip-current (current-buffer))))
- (dolist (b (buffer-list))
- (with-current-buffer b
- (when (and (equalp major-mode 'pdf-view-mode)
- (not (equalp cb b)))
- (jao-doc-view--save-bmk)
- (add-to-list 'docs (buffer-file-name)))))
- (jao-doc-view--save-bmks)
- (when (> (length docs) 0)
- (jao-doc-view--save-to-file jao-doc-view-session-file docs))))
-
-(defun jao-doc-view--save-session-1 ()
- (when (equalp major-mode 'pdf-view-mode)
- (jao-doc-view-purge-bmks)
- (jao-doc-view-save-session t)))
-
-(defvar jao-doc-session-timer nil)
-(defvar jao-doc-session-timer-seconds 60)
-
-(defun jao-doc-view-stop-session-timer ()
- (interactive)
- (when jao-doc-session-timer
- (cancel-timer jao-doc-session-timer)
- (setq jao-doc-session-timer nil)))
-
-(defun jao-doc-view--save-session ()
- (let ((inhibit-message t)
- (message-log-max nil))
- (jao-doc-view-save-session)))
-
-(defun jao-doc-view-start-session-timer ()
- (interactive)
- (setq jao-doc-session-timer
- (run-with-idle-timer jao-doc-session-timer-seconds
- t
- 'jao-doc-view--save-session)))
-
-(defun jao-doc-view-install ()
- (jao-doc-view--current-bmks)
- (add-hook 'kill-buffer-hook 'jao-doc-view--save-bmk)
- (add-hook 'kill-buffer-hook 'jao-doc-view--save-session-1 t)
- (add-hook 'kill-emacs-hook 'jao-doc-view-save-session)
- (jao-doc-view-start-session-timer))
-
-
-
-(provide 'jao-doc-view)