231 lines
8.5 KiB
EmacsLisp
231 lines
8.5 KiB
EmacsLisp
;;; org-roam-doctor.el --- Linter for Org-roam files -*- coding: utf-8; lexical-binding: t; -*-
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;;
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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/jethrokuan/org-roam
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;; Keywords: org-mode, roam, convenience
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;; Version: 1.1.0
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;; Package-Requires: ((emacs "26.1") (dash "2.13") (f "0.17.2") (s "1.12.0") (org "9.3") (emacsql "3.0.0") (emacsql-sqlite "1.0.0"))
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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 `org-roam-doctor', a utility for diagnosing and fixing
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;; Org-roam files. Running `org-roam-doctor' launches a list of checks defined
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;; by `org-roam-doctor--checkers'. Every checker is an instance of
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;; `org-roam-doctor-checker'.
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;;
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;; Each checker is given the Org parse tree (AST), and is expected to return a
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;; list of errors. The checker can also provide "actions" for auto-fixing errors
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;; (see `org-roam-doctor--remove-link' for an example).
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;;
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;; The UX experience is inspired by both org-lint and checkdoc, and their code
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;; is heavily referenced.
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;;
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;;; Code:
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;; Library Requires
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(require 'cl-lib)
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(require 'org)
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(require 'org-roam-macs)
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(require 'org-element)
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(declare-function org-roam-insert "org-roam")
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(declare-function org-roam--get-roam-buffers "org-roam")
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(declare-function org-roam--list-all-files "org-roam")
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(declare-function org-roam--org-roam-file-p "org-roam")
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(defvar org-roam-verbose)
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(cl-defstruct (org-roam-doctor-checker (:copier nil))
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(name 'missing-checker-name)
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(description "")
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(actions nil))
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(defconst org-roam-doctor--checkers
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(list
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(make-org-roam-doctor-checker
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:name 'org-roam-doctor-broken-links
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:description "Fix broken links."
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:actions '(("d" . ("Unlink" . org-roam-doctor--remove-link))
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("r" . ("Replace link" . org-roam-doctor--replace-link))
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("R" . ("Replace link (keep label)" . org-roam-doctor--replace-link-keep-label))))))
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(defun org-roam-doctor-broken-links (ast)
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"Checker for detecting broken links.
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AST is the org-element parse tree."
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(let (reports)
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(org-element-map ast 'link
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(lambda (l)
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(when (equal "file" (org-element-property :type l))
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(let ((file (org-element-property :path l)))
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(or (file-exists-p file)
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(file-remote-p file)
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(push
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`(,(org-element-property :begin l)
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,(format (if (org-element-lineage l '(link))
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"Link to non-existent image file \"%s\"\
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in link description"
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"Link to non-existent local file \"%s\"")
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file))
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reports))))))
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reports))
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(defun org-roam-doctor--check (buffer checkers)
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"Check BUFFER for errors.
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CHECKERS is the list of checkers used."
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(with-current-buffer buffer
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(save-excursion
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(goto-char (point-min))
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(let* ((ast (org-element-parse-buffer))
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(errors (sort (cl-mapcan
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(lambda (c)
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(mapcar
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(lambda (report)
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(list (set-marker (make-marker) (car report))
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(nth 1 report) c))
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(save-excursion
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(funcall
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(org-roam-doctor-checker-name c)
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ast))))
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checkers)
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#'car-less-than-car)))
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(dolist (e errors)
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(pcase-let ((`(,m ,msg ,checker) e))
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(switch-to-buffer buffer)
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(goto-char m)
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(org-reveal)
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(undo-boundary)
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(org-roam-doctor--resolve msg checker)
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(set-marker m nil)))
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errors))))
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;;; Actions
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(defun org-roam-doctor--recursive-edit ()
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"Launch into a recursive edit."
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(message "When you're done editing press C-M-c to continue.")
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(recursive-edit))
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(defun org-roam-doctor--skip ()
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"Skip the current error."
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(org-roam-message "Skipping..."))
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(defun org-roam-doctor--replace-link ()
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"Replace the current link with a new link."
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(save-match-data
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(unless (org-in-regexp org-link-bracket-re 1)
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(user-error "No link at point"))
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(let ((orig (buffer-string))
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(p (point)))
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(condition-case nil
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(save-excursion
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(replace-match "")
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(org-roam-insert))
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(quit (progn
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(replace-buffer-contents orig)
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(goto-char p)))))))
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(defun org-roam-doctor--replace-link-keep-label ()
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"Replace the current link with a new link, keeping the current link's label."
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(save-match-data
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(unless (org-in-regexp org-link-bracket-re 1)
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(user-error "No link at point"))
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(let ((orig (buffer-string))
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(p (point)))
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(condition-case nil
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(save-excursion
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(let ((label (if (match-end 2)
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(match-string-no-properties 2)
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(org-link-unescape (match-string-no-properties 1)))))
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(replace-match "")
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(org-roam-insert nil nil label)))
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(quit (progn
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(replace-buffer-contents orig)
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(goto-char p)))))))
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(defun org-roam-doctor--remove-link ()
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"Unlink the text at point."
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(unless (org-in-regexp org-link-bracket-re 1)
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(user-error "No link at point"))
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(save-excursion
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(let ((label (if (match-end 2)
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(match-string-no-properties 2)
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(org-link-unescape (match-string-no-properties 1)))))
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(delete-region (match-beginning 0) (match-end 0))
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(insert label))))
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(defun org-roam-doctor--resolve (msg checker)
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"Resolve an error.
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MSG is the error that was found, which is displayed in a help buffer.
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CHECKER is a org-roam-doctor checker instance."
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(let ((actions (org-roam-doctor-checker-actions checker))
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c)
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(push '("e" . ("Edit" . org-roam-doctor--recursive-edit)) actions)
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(push '("s" . ("Skip" . org-roam-doctor--skip)) actions)
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(with-output-to-temp-buffer "*Org-roam-doctor Help*"
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(mapc #'princ
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(list "Error message:\n " msg "\n\n"))
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(dolist (action actions)
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(princ (format "[%s]: %s\n"
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(car action)
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(cadr action))))
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(princ "\n\n"))
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(shrink-window-if-larger-than-buffer
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(get-buffer-window "*Org-roam-doctor Help*"))
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(message "Press key for command:")
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(unwind-protect
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(progn
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(cl-loop
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do (setq c (char-to-string (read-char-exclusive)))
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until (assoc c actions)
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do (message "Please enter a valid key for command:"))
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(funcall (cddr (assoc c actions)))
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(redisplay))
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(when (get-buffer-window "*Org-roam-doctor Help*")
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(delete-window (get-buffer-window "*Org-roam-doctor Help*"))
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(kill-buffer "*Org-roam-doctor Help*")))))
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;;;###autoload
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(defun org-roam-doctor (&optional checkall)
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"Perform a check on the current buffer to ensure cleanliness.
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If CHECKALL, run the check for all Org-roam files."
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(interactive "P")
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(let ((files (if checkall
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(org-roam--list-all-files)
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(unless (org-roam--org-roam-file-p)
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(user-error "Not in an org-roam file"))
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`(,(buffer-file-name)))))
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(org-roam-doctor-start files org-roam-doctor--checkers)))
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(defun org-roam-doctor-start (files checkers)
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"Lint FILES using CHECKERS."
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(save-window-excursion
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(let ((existing-buffers (org-roam--get-roam-buffers)))
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(dolist (f files)
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(let ((buf (find-file-noselect f)))
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(org-roam-doctor--check buf checkers)
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(unless (memq buf existing-buffers)
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(save-buffer buf)
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(kill-buffer buf))))))
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(org-roam-message "Linting completed."))
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(provide 'org-roam-doctor)
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;;; org-roam-doctor.el ends here
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