75 lines
2.6 KiB
EmacsLisp
75 lines
2.6 KiB
EmacsLisp
;;; denote-retrieve.el --- Link facility for Denote -*- lexical-binding: t -*-
|
|
|
|
;; Copyright (C) 2022 Free Software Foundation, Inc.
|
|
|
|
;; Author: Protesilaos Stavrou <info@protesilaos.com>
|
|
;; URL: https://git.sr.ht/~protesilaos/denote
|
|
;; Version: 0.1.0
|
|
;; Package-Requires: ((emacs "27.1"))
|
|
|
|
;; This file is NOT part of GNU Emacs.
|
|
|
|
;; 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 <https://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
;;
|
|
;; Used internally by commands that operate on file contents.
|
|
|
|
;;; Code:
|
|
|
|
(require 'denote)
|
|
|
|
(defconst denote-retrieve--title-regexp
|
|
"^\\(?:#\\+\\)?\\(?:title:\\)[\s\t]+\\(?1:.*\\)"
|
|
"Regular expression for title key and value.
|
|
|
|
The match that needs to be extracted is explicityly marked as
|
|
group 1. `denote-retrieve--find-value' uses the group 1 sting.")
|
|
|
|
(defconst denote-retrieve--identifier-regexp
|
|
"^.?.?\\b\\(?:identifier\\|ID\\)\\s-*[:=]\\s-*\"?\\(?1:[0-9T]+\\)"
|
|
"Regular expression for filename key and value.
|
|
|
|
The match that needs to be extracted is explicityly marked as
|
|
group 1. `denote-retrieve--find-value' uses the group 1 sting.")
|
|
|
|
(defun denote-retrieve--search (regexp)
|
|
"Search for REGEXP in the current buffer."
|
|
(save-excursion
|
|
(save-restriction
|
|
(widen)
|
|
(goto-char (point-min))
|
|
(re-search-forward regexp nil t 1)
|
|
(match-string-no-properties 1))))
|
|
|
|
(defun denote-retrieve--find-value (regexp)
|
|
"Return value from REGEXP by searching the file."
|
|
(or (denote-retrieve--search regexp)
|
|
(user-error "Cannot retrieve %s" regexp)))
|
|
|
|
(defun denote-retrieve--retrieve-value (file regexp)
|
|
"Return REGEXP value from FILE.
|
|
FILE is a note in the variable `denote-directory'."
|
|
(let ((default-directory (denote-directory)))
|
|
(with-temp-buffer
|
|
(insert-file-contents-literally file)
|
|
(denote-retrieve--find-value regexp))))
|
|
|
|
(defun denote-retrieve--read-file-prompt ()
|
|
"Prompt for regular file in variable `denote-directory'."
|
|
(read-file-name "Select note: " (denote-directory) nil t nil #'file-regular-p))
|
|
|
|
(provide 'denote-retrieve)
|
|
;;; denote-retrieve.el ends here
|