102 lines
3.4 KiB
EmacsLisp
102 lines
3.4 KiB
EmacsLisp
;;; org-ref-latex.el --- org-ref functionality for LaTeX files -*- lexical-binding: t; -*-
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;; Copyright (C) 2015-2021 John Kitchin
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;; Author: John Kitchin <jkitchin@andrew.cmu.edu>
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;; Keywords: languages
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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 of the License, or
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;; (at your option) any later version.
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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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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary: Make cites in LaTeX documents clickable, and with tooltips.
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;; We use font-lock to add some functionality to the keys.
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;;; Code:
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(require 'org-ref-citation-links)
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(require 'bibtex-completion)
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(defvar latex-mode-map)
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(defvar org-ref-cite-types)
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(defvar org-ref-latex-cite-re
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(concat "\\\\\\(?1:" (mapconcat
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(lambda (x)
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(replace-regexp-in-string "\\*" "\\\\*" x))
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(mapcar 'car org-ref-cite-types)
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"\\|")
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"\\)"
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"\\(?2:\\[[^]]*\\]\\)?" ; optional []
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"\\(?3:\\[[^]]*\\]\\)?" ; optional []
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"{\\(?4:[^}]*\\)}") ; group 4 contains the keys
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"Regexp for LaTeX citations. \\citetype[opti{o}nal][optiona{l}]{some,keys}.
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The clickable part are the keys.")
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(defun org-ref-latex-get-bibliography ()
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"Find bibliographies in the tex file"
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(save-excursion
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(let ((bibliography '()))
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(goto-char (point-min))
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(while (re-search-forward "\\\\bibliography{\\(?1:.*\\)}" nil t)
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(setq bibliography (append bibliography
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(mapcar (lambda (f)
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(concat f ".bib"))
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(split-string (match-string-no-properties 1) ",")))))
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(goto-char (point-min))
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(while (re-search-forward "\\\\addbibresource{\\(?1:.*\\)}" nil t)
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(setq bibliography (append bibliography (list (match-string-no-properties 1)))))
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bibliography)))
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(defun org-ref-next-latex-cite (&optional limit)
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"Font-lock function to make cites in LaTeX documents clickable."
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(while (re-search-forward org-ref-latex-cite-re limit t)
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(setq font-lock-extra-managed-props (delq 'help-echo font-lock-extra-managed-props))
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(goto-char (match-beginning 0))
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(let ((end (match-end 0)))
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(cl-loop for key in (split-string (match-string-no-properties 4) ",")
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do
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(save-match-data
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(search-forward key)
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(add-text-properties
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(match-beginning 0)
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(match-end 0)
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`(mouse-face highlight
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local-map ,(let ((map (copy-keymap latex-mode-map)))
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(define-key map [mouse-1]
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`(lambda ()
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(interactive)
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(let ((bibtex-completion-bibliography (org-ref-latex-get-bibliography)))
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(bibtex-completion-show-entry (list ,key))
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(bibtex-beginning-of-entry))))
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map)
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help-echo ,(let* ((bibtex-completion-bibliography (org-ref-latex-get-bibliography)))
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(bibtex-completion-apa-format-reference key))))))
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(goto-char end))))
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(defun org-ref-latex-cite-on ()
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"Add the font-lock on for citations."
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(font-lock-add-keywords
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'latex-mode
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'((org-ref-next-latex-cite 0 font-lock-constant-face))))
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(add-hook 'LaTeX-mode-hook 'org-ref-latex-cite-on)
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(provide 'org-ref-latex)
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;;; org-ref-latex.el ends here
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