mirror of
https://github.com/org-roam/org-roam
synced 2025-08-01 12:17:21 -05:00
125 lines
4.9 KiB
EmacsLisp
125 lines
4.9 KiB
EmacsLisp
;;; org-roam-completion.el --- Completion features -*- coding: utf-8; lexical-binding: t; -*-
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;; Copyright © 2020 Jethro Kuan <jethrokuan95@gmail.com>
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;; Author: Jethro Kuan <jethrokuan95@gmail.com>
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;; URL: https://github.com/org-roam/org-roam
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;; Keywords: org-mode, roam, convenience
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;; Version: 2.0.0
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;; Package-Requires: ((emacs "26.1") (dash "2.13") (f "0.17.2") (s "1.12.0") (org "9.4") (emacsql "3.0.0") (emacsql-sqlite3 "1.0.2") (magit-section "2.90.1"))
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;; This file is NOT part of GNU Emacs.
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;;
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;; This library provides completion-at-point for org-roam.
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;;; Code:
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(require 'cl-lib)
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(declare-function org-roam--get-titles "org-roam")
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(defcustom org-roam-completion-ignore-case t
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"Whether to ignore case in Org-roam `completion-at-point' completions."
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:group 'org-roam
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:type 'boolean)
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(defcustom org-roam-completion-everywhere nil
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"When non-nil, provide link completion matching outside of Org links."
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:group 'org-roam
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:type 'boolean)
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(defvar org-roam-completion-functions (list #'org-roam-complete-link-at-point
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#'org-roam-complete-everywhere)
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"List of functions to be used with `completion-at-point' for Org-roam.")
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(defun org-roam-complete-everywhere ()
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"Provides completions for links for any word at point.
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This is a `completion-at-point' function, and is active when
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`org-roam-completion-everywhere' is non-nil."
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(let ((end (point))
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(start (point))
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(exit-fn (lambda (&rest _) nil))
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collection)
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(when (and org-roam-completion-everywhere
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(thing-at-point 'word)
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(not (save-match-data (org-in-regexp org-link-any-re))))
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(let ((bounds (bounds-of-thing-at-point 'word)))
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(setq start (car bounds)
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end (cdr bounds)
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collection #'org-roam--get-titles
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exit-fn (lambda (str _status)
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(delete-char (- (length str)))
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(insert "[[roam:" str "]]")))))
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(when collection
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(let ((prefix (buffer-substring-no-properties start end)))
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(list start end
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(if (functionp collection)
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(completion-table-case-fold
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(completion-table-dynamic
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(lambda (_)
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(cl-remove-if (apply-partially #'string= prefix)
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(funcall collection))))
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(not org-roam-completion-ignore-case))
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collection)
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:exit-function exit-fn)))))
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(defun org-roam-complete-link-at-point ()
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"Do appropriate completion for the link at point."
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(let ((end (point))
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(start (point))
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collection link-type)
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(when (org-in-regexp org-link-bracket-re 1)
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(setq start (match-beginning 1)
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end (match-end 1))
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(let ((context (org-element-context)))
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(pcase (org-element-lineage context '(link) t)
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(`nil nil)
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(link
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(let ((link-type (org-element-property :type link)))
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(when (member link-type '("roam" "fuzzy"))
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(when (string= link-type "roam") (setq start (+ start (length "roam:"))))
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(setq collection #'org-roam--get-titles)))))))
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(when collection
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(let ((prefix (buffer-substring-no-properties start end)))
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(list start end
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(if (functionp collection)
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(completion-table-case-fold
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(completion-table-dynamic
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(lambda (_)
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(cl-remove-if (apply-partially #'string= prefix)
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(funcall collection))))
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(not org-roam-completion-ignore-case))
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collection)
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:exit-function
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(lambda (str &rest _)
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(delete-char (- 0 (length str)))
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(insert (concat (unless (string= link-type "roam") "roam:")
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str))
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(forward-char 2)))))))
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(defun org-roam--register-completion-functions ()
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"."
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(dolist (fn org-roam-completion-functions)
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(add-hook 'completion-at-point-functions fn nil t)))
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(add-hook 'org-roam-find-file-hook #'org-roam--register-completion-functions)
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(provide 'org-roam-completion)
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;;; org-roam-completion.el ends here
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