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;; -*- lexical-binding: t; -*-
(require 'jao-org-utils)
(require 'jao-maildir)
(require 'pdf-info)
(defvar jao-org--sink-dir "./")
(defvar jao-org-open-pdf-fun 'jao-org--pdf-tools-open)
(defun jao-org--pdf-go (page height)
(when page (pdf-view-goto-page page))
(when height
(image-set-window-vscroll
(round (/ (* height (cdr (pdf-view-image-size))) (frame-char-height))))))
(defun jao-org--pdf-tools-open (path page &optional height)
(org-open-file path 1)
(jao-org--pdf-go path page))
(defun jao-org--pdf-open (path page &optional height)
(funcall (or jao-org-open-pdf-fun 'jao-org--pdf-tools-open) path page height))
(defun jao-org--pdf-p (file) (string-match-p ".*\\.pdf$" file))
(defun jao-org-links--open-pdf (link)
"Open LINK in pdf-view-mode."
(require 'pdf-tools)
(cond ((string-match "\\(.*\\)::\\([0-9]*\\)\\+\\+\\([[0-9]\\.*[0-9]*\\)" link)
(let* ((path (match-string 1 link))
(page (string-to-number (match-string 2 link)))
(height (string-to-number (match-string 3 link))))
(jao-org--pdf-open path page height)))
((string-match "\\(.*\\)::\\([0-9]+\\)$" link)
(let* ((path (match-string 1 link))
(page (max 1 (string-to-number (match-string 2 link)))))
(jao-org--pdf-open path page)))
(t (jao-org--pdf-open link nil))))
(defun jao-org-links--follow-doc (link)
(let* ((full-link (concat org-directory "/doc/" link))
(dest-path (car (split-string full-link "::"))))
(when (not (file-exists-p dest-path))
(let* ((sink-file (expand-file-name link jao-org--sink-dir))
(real-file (if (file-exists-p sink-file) sink-file
(read-file-name "Import file: "
jao-org--sink-dir link link))))
(shell-command (format "mv %s %s" real-file dest-path))))
(if (jao-org--pdf-p dest-path)
(jao-org-links--open-pdf full-link)
(browse-url (format "file://%s" (expand-file-name dest-path))))))
(defun jao-org-links--complete-doc (&optional arg)
(let ((default-directory jao-org--sink-dir))
(let ((f (replace-regexp-in-string "^file:" "doc:"
(org-file-complete-link arg))))
(if (jao-org--pdf-p f)
(concat f "::" (read-from-minibuffer "Page: " "1"))
f))))
(defsubst jao-org--title->file (title)
(concat (mapconcat 'downcase (split-string title nil t) "-") ".pdf"))
(defun jao-org--pdf-title (&optional fname)
(let ((base (file-name-base (or fname (pdf-view-buffer-file-name)))))
(capitalize (replace-regexp-in-string "-" " " base))))
(defvar-local jao--pdf-outline nil)
(defun jao-org--pdf-section-title (&optional page)
(when (not jao--pdf-outline)
(setq-local jao--pdf-outline (pdf-info-outline)))
(let ((page (or page (pdf-view-current-page)))
(outline jao--pdf-outline)
(cur-page 0)
(cur-title (jao-org--pdf-title)))
(while (and (car outline) (< cur-page page))
(setq cur-page (cdr (assoc 'page (car outline))))
(when (<= cur-page page)
(setq cur-title (cdr (assoc 'title (car outline)))))
(setq outline (cdr outline)))
(replace-regexp-in-string "[[:blank:]]+" " " cur-title)))
(defun jao-org-links-open-mail (fname)
(let ((group (jao-maildir-file-to-group fname))
(id (with-temp-buffer
(insert-file fname)
(goto-char (point-min))
(message-mode)
(not-modified)
(message-fetch-field "Message-ID"))))
(when (and group id) (org-gnus-follow-link group id))))
;;;###autoload
(defvar jao-org-links-pdf-store-fun nil)
(defun jao-org-links--store-pdf-link ()
(or (when (fboundp jao-org-links-pdf-store-fun)
(funcall jao-org-links-pdf-store-fun))
(when (derived-mode-p 'pdf-view-mode)
(jao-org-links-store-pdf-link buffer-file-name
(pdf-view-current-page)
(jao-org--pdf-section-title)))))
;;;###autoload
(defun jao-org-links-store-pdf-link (path page title)
(org-store-link-props
:type "doc"
:link (format "doc:%s::%d" (file-name-nondirectory path) page)
:description (format "%s (p. %d)" title page)))
;;;###autoload
(defun jao-org-insert-doc (title)
(interactive "sDocument title: ")
(insert (format "[[doc:%s][%s]]" (jao-org--title->file title) title)))
;;;###autoload
(defun jao-org-links-setup (sink-dir)
(interactive)
(org-link-set-parameters "doc"
:follow #'jao-org-links--follow-doc
:complete #'jao-org-links--complete-doc
:store #'jao-org-links--store-pdf-link)
(org-link-set-parameters "message" :follow #'jao-org-links-open-mail)
(setq jao-org--sink-dir (file-name-as-directory sink-dir)))
(defvar jao-doc-notes-dir)
;;;###autoload
(defun jao-org-org-to-pdf-file ()
(expand-file-name (concat "doc/" (file-name-base buffer-file-name) ".pdf")
jao-org-notes-dir))
;;;###autoload
(defun jao-org-pdf-to-org-file (&optional file-name)
(let* ((file-name (or file-name buffer-file-name))
(bn (file-name-base file-name))
(rx (format "%s\\.org$" (regexp-quote bn))))
(save-some-buffers nil
(lambda ()
(string-prefix-p jao-org-notes-dir buffer-file-name)))
(or (car (directory-files-recursively jao-org-notes-dir rx))
(let* ((dirs (seq-difference (directory-files jao-org-notes-dir)
'("." ".." "attic")))
(dir (completing-read "Notes subdir: " dirs nil t)))
(expand-file-name (concat dir "/" bn ".org") jao-org-notes-dir)))))
;;;###autoload
(defun jao-org-insert-doc-skeleton (&optional title)
(insert "#+title: " (or title (jao-org--pdf-title (buffer-file-name)))
"\n#+author:\n#+startup: latexpreview\n\n"))
;;;###autoload
(defun jao-org-pdf-goto-org (arg)
(interactive "P")
(when (jao-org--pdf-p buffer-file-name)
(let* ((file (jao-org-pdf-to-org-file))
(new (not (file-exists-p file)))
(title (jao-org--pdf-title)))
(when (or arg new) (org-store-link nil t))
(find-file-other-window file)
(when new
(jao-org-insert-doc-skeleton title)
(org-insert-link)))))
;;;###autoload
(defun jao-org-pdf-goto-org* ()
(interactive)
(jao-org-pdf-goto-org t))
(provide 'jao-org-links)
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