1 #+TITLE: Org-ref - The best reference handling for org-mode
7 This document is an experiment at creating a literate program to provide similar features as reftex for org-mode referencing. These features include:
9 1. using completion to create links
10 2. storing links to places,
11 3. Clickable links that do useful things
12 4. Exportable links to LaTeX
13 5. Utility functions for dealing with bibtex files and org-files
15 Some additional features include
16 1. Get minibuffer messages for the cite/ref/label link under point
18 With helm integration (default) you can:
20 1. C-c ] to insert a citation link
22 - Enter to insert or append citation(s)
23 - C-u Enter to insert an alternative cite link
24 - C-u C-u Enter to replace the citation at point
25 2. C-u C-c ] to insert a ref link with helm completion
26 3. C-u C-u C-c ] to insert a label with completion
27 4. M-x org-ref to get a helm completion buffer with link checks, utilities and export options
30 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
31 ;;; org-ref.el --- setup bibliography, cite, ref and label org-mode links.
33 ;; Copyright(C) 2014 John Kitchin
35 ;; Author: John Kitchin <jkitchin@andrew.cmu.edu>
36 ;; This file is not currently part of GNU Emacs.
38 ;; This program is free software; you can redistribute it and/or
39 ;; modify it under the terms of the GNU General Public License as
40 ;; published by the Free Software Foundation; either version 2, or (at
41 ;; your option) any later version.
43 ;; This program is distributed in the hope that it will be useful, but
44 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
45 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
46 ;; General Public License for more details.
48 ;; You should have received a copy of the GNU General Public License
49 ;; along with this program ; see the file COPYING. If not, write to
50 ;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
51 ;; Boston, MA 02111-1307, USA.
55 ;; Lisp code to setup bibliography cite, ref and label org-mode links. also
56 ;; sets up reftex and helm for org-mode citations. The links are clickable and
57 ;; do things that are useful. You should really read org-ref.org for details.
59 ;; Package-Requires: ((dash) (helm) (helm-bibtex))
63 The only external require is reftex-cite
65 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
66 (require 'reftex-cite)
69 (require 'helm-config)
70 (require 'helm-bibtex)
74 There are some variables needed later to tell this library where you store your pdf files, where your notes file is, and your default bibliography. This variable is similar to the reftex-default-bibliography. I do not remember why I made it separate.
76 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
78 "customization group for org-ref")
80 (defcustom org-ref-bibliography-notes
82 "filename to where you will put all your notes about an entry in
83 the default bibliography."
87 (defcustom org-ref-default-bibliography
89 "list of bibtex files to search for. You should use full-paths for each file."
90 :type '(repeat :tag "List of bibtex files" file)
93 (defcustom org-ref-pdf-directory
95 "directory where pdfs are stored by key. put a trailing / in"
99 (defcustom org-ref-default-citation-link
101 "The default type of citation link to use"
105 (defcustom org-ref-insert-cite-key
107 "Keyboard shortcut to insert a citation."
111 (defcustom org-ref-bibliography-entry-format
112 '(("article" . "%a, %t, <i>%j</i>, <b>%v(%n)</b>, %p (%y). <a href=\"%U\">link</a>. <a href=\"http://dx.doi.org/%D\">doi</a>.")
114 ("book" . "%a, %t, %u (%y).")
116 ("proceedings" . "%e, %t in %S, %u (%y).")
118 ("inproceedings" . "%a, %t, %p, in %b, edited by %e, %u (%y)"))
120 "string to format an entry. Just the reference, no numbering at the beginning, etc... see the `org-ref-reftex-format-citation' docstring for the escape codes."
124 (defcustom org-ref-open-notes-function
130 ;;(org-tree-to-indirect-buffer)
131 (outline-previous-visible-heading 1)
132 (recenter-top-bottom 0))
133 "User-defined way to open a notes entry. This is excecuted after the entry is found, with the cursor at the beginning of the headline. The default setting fully expands the notes, and moves the headline to the top of the buffer"
138 (defcustom org-ref-open-pdf-function
139 'org-ref-open-pdf-at-point
140 "User-defined function to open a pdf from a link. The function must get the key at point, and derive a path to the pdf file, then open it. The default function is `org-ref-open-pdf-at-point'."
145 (defcustom org-ref-insert-cite-function
146 'org-ref-helm-insert-cite-link
147 "Function to call to insert citation links. The default is `org-ref-helm-insert-cite-link' which uses `helm-bibtex'. org-ref modifies helm-bibtex a little bit to give org-mode citations, and to reorder default actions. You may use `org-ref-insert-cite-link' if you like the reftex interface."
152 (defcustom org-ref-cite-onclick-function
153 'org-ref-cite-click-helm
154 "Function that runs when you click on a cite link. The function must take no arguments. You may also use `org-ref-cite-onclick-minibuffer-menu' if you do not like helm."
158 (defcustom org-ref-show-citation-on-enter t
159 "If non-nil add a hook function to show the citation summary in
160 the minibuffer just by putting the cursor in a link"
165 This next variable determines the citation types that are available in org-ref. Links for each one are automatically generated, and completion functions are automatically generated. Users may add to this list in their own init files.
167 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
168 (defcustom org-ref-cite-types
169 '("cite" "nocite" ;; the default latex cite commands
170 ;; natbib cite commands, http://ctan.unixbrain.com/macros/latex/contrib/natbib/natnotes.pdf
171 "citet" "citet*" "citep" "citep*"
172 "citealt" "citealt*" "citealp" "citealp*"
174 "citeauthor" "citeauthor*"
175 "citeyear" "citeyear*"
176 "Citet" "Citep" "Citealt" "Citealp" "Citeauthor"
178 ;; http://ctan.mirrorcatalogs.com/macros/latex/contrib/biblatex/doc/biblatex.pdf
180 "parencite" "Parencite"
181 "footcite" "footcitetext"
182 "textcite" "Textcite"
183 "smartcite" "Smartcite"
184 "cite*" "parencite*" "supercite"
185 "autocite" "Autocite" "autocite*" "Autocite*"
187 "citetitle" "citetitle*"
188 "citedate" "citedate*"
190 "fullcite" "footfullcite"
191 ;; "volcite" "Volcite" cannot support the syntax
192 "notecite" "Notecite"
193 "pnotecite" "Pnotecite"
195 ;; multicites. Very limited support for these.
196 "cites" "Cites" "parencites" "Parencites"
197 "footcites" "footcitetexts"
198 "smartcites" "Smartcites" "textcites" "Textcites"
199 "supercites" "autocites" "Autocites"
200 ;; for the bibentry package
203 "List of citation types known in org-ref"
204 :type '(repeat :tag "List of citation types" string)
208 We need a hook variable to store user-defined bibtex entry cleaning functions
209 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
210 (defcustom org-ref-clean-bibtex-entry-hook nil
211 "Hook that is run in org-ref-clean-bibtex-entry. The functions should take no arguments, and operate on the bibtex entry at point."
217 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
218 (defvar org-ref-bibliography-files
220 "variable to hold bibliography files to be searched")
223 ** org-mode / reftex setup
225 We setup reftex here. We use a custom insert cite link function defined here: [[*org-ref-insert-cite-link][org-ref-insert-cite-link]]. We setup reftex to use our org citation format.
227 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
229 (defun org-mode-reftex-setup ()
230 (and (buffer-file-name)
231 (file-exists-p (buffer-file-name))
232 (global-auto-revert-mode t)
233 ;; I do not remember why I put this next line in. It doesn't
234 ;; work for org-files. Nothing very bad happens, but it gives
235 ;; an annoying error. Commenting it out for now.
238 (make-local-variable 'reftex-cite-format)
239 (setq reftex-cite-format 'org))
241 ;; define key for inserting citations
242 (define-key org-mode-map
243 (kbd org-ref-insert-cite-key)
244 org-ref-insert-cite-function)
246 (add-hook 'org-mode-hook 'org-mode-reftex-setup)
248 (eval-after-load 'reftex-vars
250 (add-to-list 'reftex-cite-format-builtin
251 '(org "Org-mode citation"
252 ((?\C-m . "cite:%l") ; default
253 (?d . ",%l") ; for appending
259 (?h . "citeauthor:%l")
260 (?H . "citeauthor*:%l")
267 You may want to add new formats to the reftex-cite-format-builtin variable. Here is an example of adding two new formats. Note that this does not create the links.
269 #+BEGIN_SRC emacs-lisp :tangle no
271 (setf (nth 2 (assoc 'org reftex-cite-format-builtin))
272 (append (nth 2 (assoc 'org reftex-cite-format-builtin)) '((?W . "textcite:%l")
273 (?z . "newcite:%l"))))
276 You can define a new citation link like this:
277 #+BEGIN_SRC emacs-lisp :tangle no
278 (org-ref-define-citation-link "citez" ?z)
281 ** Messages for link at cursor
282 Here we setup code that shows you a context message for the element under the cursor when emacs is idle.
283 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
284 (defvar org-ref-message-timer nil
285 "Variable to store the link message timer in.")
288 (defun org-ref-show-link-messages ()
289 "Turn on link messages. You will see a message in the
290 minibuffer when on a cite, ref or label link."
292 (or org-ref-message-timer
293 (setq org-ref-message-timer
294 (run-with-idle-timer 0.5 t 'org-ref-link-message))))
297 (defun org-ref-cancel-link-messages ()
298 "Stop showing messages in minibuffer when on a link."
300 (cancel-timer org-ref-message-timer)
301 (setq org-ref-message-timer nil))
304 (when org-ref-show-citation-on-enter
305 (org-ref-show-link-messages))
307 ;; this approach caused the selected region to not be highlighted any more.
308 ; (add-hook 'post-command-hook 'org-ref-link-message))
309 ; (remove-hook 'post-command-hook 'org-ref-link-message))
312 ** Messages for context under mouse pointer
313 Sometimes, when reading a document, I actually use the mouse more than the cursor. This code enables the mouse cursor to trigger a message in the minibuffer about what is under the cursor. I run this on a timer.
315 The basic idea here is to get the mouse position, and if we can determine there is a character that (point) can move to, we move (point) and run the org-ref-link-message function. Since this runs on a timer, we store the last mouse position, and only run the function when the mouse has moved to avoid getting messages every time the timer runs.
317 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
318 (defvar org-ref-last-mouse-pos nil
319 "Stores last mouse position for use in `org-ref-mouse-message'.")
321 (defun org-ref-can-move-p ()
322 "See if a character is under the mouse. If so return the position for `goto-char'."
323 (let* ((line (cddr org-ref-last-mouse-pos))
324 (col (cadr org-ref-last-mouse-pos)))
326 (goto-char (window-start))
329 (> (- (line-end-position) (line-beginning-position)) col)
330 (progn (forward-char col) (point))
334 (defun org-ref-mouse-message ()
335 "Display message for link under mouse cursor"
337 (when (not (equal (mouse-position) org-ref-last-mouse-pos))
338 (setq org-ref-last-mouse-pos (mouse-position))
339 (let ((p (org-ref-can-move-p)))
343 (org-ref-link-message))))))
346 (defvar org-ref-message-timer-mouse nil
347 "Store mouse timer.")
350 (defvar org-ref-mouse-message-interval 0.5
351 "How often to run the mouse message timer in seconds")
354 (defun org-ref-mouse-messages-on ()
355 "Turn on mouse messages."
357 (or org-ref-message-timer-mouse
358 (setq org-ref-message-timer-mouse
359 (run-at-time "0.5 sec"
360 org-ref-mouse-message-interval
361 'org-ref-mouse-message))))
364 (defun org-ref-mouse-messages-off ()
365 "Turn off mouse messages"
367 (cancel-timer org-ref-message-timer-mouse)
368 (setq org-ref-message-timer-mouse nil)
369 (message "Mouse messages are off"))
373 : org-ref-mouse-messages-off
376 Here we make the org-ref links a different color.
384 cite:sokalski-2012-optim-ta,zhang-2011-spatial-tio2,li-2012-heter-ceram,li-2013-photoc
386 cite*:sokalski-2012-optim-ta,zhang-2011-spatial-tio2,li-2012-heter-ceram,li-2013-photoc
388 citenum:sokalski-2012-optim-ta,zhang-2011-spatial-tio2,li-2012-heter-ceram,li-2013-photoc
394 #+BEGIN_SRC emacs-lisp
395 (defcustom org-ref-colorize-links
397 "When non-nil, change colors of links"
400 (defcustom org-ref-cite-color
402 "Color of cite like links"
406 (defcustom org-ref-ref-color
408 "Color of ref like links"
412 (defcustom org-ref-label-color
414 "Color of label links"
418 (defvar org-ref-cite-re nil
419 "regexp for cite links")
422 (setq org-ref-cite-re
423 (concat "\\(" (mapconcat
425 (replace-regexp-in-string "\*" "\\\\*" x)
427 org-ref-cite-types "\\|") "\\)"
428 ":\\([a-zA-Z0-9-_:]*,?\\)*"))
431 (setq org-ref-label-re
432 "label:\\([a-zA-Z0-9-_:]*,?\\)*")
436 "ref:\\([a-zA-Z0-9-_:]*,?\\)*")
439 (defface org-ref-cite-face
440 `((t (:inherit org-link :foreground ,org-ref-cite-color)))
441 "Color for cite-like links in org-ref.")
444 (defface org-ref-label-face
445 `((t (:inherit org-link :foreground ,org-ref-label-color)))
446 "Color for ref links in org-ref.")
449 (defface org-ref-ref-face
450 `((t (:inherit org-link :foreground ,org-ref-ref-color)))
451 "Face for ref links in org-ref.")
454 (when org-ref-colorize-links
455 (highlight-regexp org-ref-cite-re 'org-ref-cite-face)
456 (highlight-regexp org-ref-label-re 'org-ref-label-face)
457 (highlight-regexp org-ref-ref-re 'org-ref-ref-face))
464 Most of this library is the creation of functional links to help with references and citations.
466 We need several general utilities for this module. They are organized here. We frequently need to remove white space from the front and back of a string. Here we do that for a string.
468 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
469 (defun org-ref-strip-string (string)
470 "strip leading and trailing whitespace from the string"
471 (replace-regexp-in-string
472 (concat search-whitespace-regexp "$" ) ""
473 (replace-regexp-in-string
474 (concat "^" search-whitespace-regexp ) "" string)))
477 It is helpful to make the previous function operate on a list of strings here.
479 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
480 (defun org-ref-split-and-strip-string (string)
481 "split key-string and strip keys. Assumes the key-string is comma delimited"
482 (mapcar 'org-ref-strip-string (split-string string ",")))
485 ** bibliography and bibliographystyle
486 *** An html bibliography
488 Reftex is no longer being developed. I want a url and doi option for formatting, so I am modifying this [[file:emacs-24.3/lisp/textmodes/reftex-cite.el::(defun%20reftex-format-citation%20(entry%20format)][function]] from reftex-cite to provide that. We need to modify the reftex-get-bib-field code a bit to remove enclosing braces and quotes so we can make nice looking links.
490 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
491 (defun org-ref-reftex-get-bib-field (field entry &optional format)
492 "similar to reftex-get-bib-field, but removes enclosing braces and quotes"
494 (setq result (reftex-get-bib-field field entry format))
495 (when (and (not (string= result "")) (string= "{" (substring result 0 1)))
496 (setq result (substring result 1 -1)))
497 (when (and (not (string= result "")) (string= "\"" (substring result 0 1)))
498 (setq result (substring result 1 -1)))
501 (defun org-ref-reftex-format-citation (entry format)
502 "return a formatted string for the bibtex entry (from bibtex-parse-entry) according
503 to the format argument. The format is a string with these percent escapes.
505 In the format, the following percent escapes will be expanded.
507 %l The BibTeX label of the citation.
508 %a List of author names, see also `reftex-cite-punctuation'.
509 %2a Like %a, but abbreviate more than 2 authors like Jones et al.
510 %A First author name only.
511 %e Works like %a, but on list of editor names. (%2e and %E work a well)
513 It is also possible to access all other BibTeX database fields:
514 %b booktitle %c chapter %d edition %h howpublished
515 %i institution %j journal %k key %m month
516 %n number %o organization %p pages %P first page
517 %r address %s school %u publisher %t title
519 %B booktitle, abbreviated %T title, abbreviated
524 Usually, only %l is needed. The other stuff is mainly for the echo area
525 display, and for (setq reftex-comment-citations t).
527 %< as a special operator kills punctuation and space around it after the
528 string has been formatted.
530 A pair of square brackets indicates an optional argument, and RefTeX
531 will prompt for the values of these arguments.
533 Beware that all this only works with BibTeX database files. When
534 citations are made from the \bibitems in an explicit thebibliography
535 environment, only %l is available."
536 ;; Format a citation from the info in the BibTeX ENTRY
538 (unless (stringp format) (setq format "\\cite{%l}"))
540 (if (and reftex-comment-citations
541 (string-match "%l" reftex-cite-comment-format))
542 (error "reftex-cite-comment-format contains invalid %%l"))
545 "\\(\\`\\|[^%]\\)\\(\\(%\\([0-9]*\\)\\([a-zA-Z]\\)\\)[.,;: ]*\\)"
547 (let ((n (string-to-number (match-string 4 format)))
548 (l (string-to-char (match-string 5 format)))
554 (org-ref-reftex-get-bib-field "&key" entry)
555 (if reftex-comment-citations
556 reftex-cite-comment-format
558 ((= l ?a) (reftex-format-names
559 (reftex-get-bib-names "author" entry)
561 ((= l ?A) (car (reftex-get-bib-names "author" entry)))
562 ((= l ?b) (org-ref-reftex-get-bib-field "booktitle" entry "in: %s"))
563 ((= l ?B) (reftex-abbreviate-title
564 (org-ref-reftex-get-bib-field "booktitle" entry "in: %s")))
565 ((= l ?c) (org-ref-reftex-get-bib-field "chapter" entry))
566 ((= l ?d) (org-ref-reftex-get-bib-field "edition" entry))
567 ((= l ?D) (org-ref-reftex-get-bib-field "doi" entry))
568 ((= l ?e) (reftex-format-names
569 (reftex-get-bib-names "editor" entry)
571 ((= l ?E) (car (reftex-get-bib-names "editor" entry)))
572 ((= l ?h) (org-ref-reftex-get-bib-field "howpublished" entry))
573 ((= l ?i) (org-ref-reftex-get-bib-field "institution" entry))
574 ((= l ?j) (org-ref-reftex-get-bib-field "journal" entry))
575 ((= l ?k) (org-ref-reftex-get-bib-field "key" entry))
576 ((= l ?m) (org-ref-reftex-get-bib-field "month" entry))
577 ((= l ?n) (org-ref-reftex-get-bib-field "number" entry))
578 ((= l ?o) (org-ref-reftex-get-bib-field "organization" entry))
579 ((= l ?p) (org-ref-reftex-get-bib-field "pages" entry))
580 ((= l ?P) (car (split-string
581 (org-ref-reftex-get-bib-field "pages" entry)
583 ((= l ?s) (org-ref-reftex-get-bib-field "school" entry))
584 ((= l ?S) (org-ref-reftex-get-bib-field "series" entry))
585 ((= l ?u) (org-ref-reftex-get-bib-field "publisher" entry))
586 ((= l ?U) (org-ref-reftex-get-bib-field "url" entry))
587 ((= l ?r) (org-ref-reftex-get-bib-field "address" entry))
588 ;; strip enclosing brackets from title if they are there
589 ((= l ?t) (org-ref-reftex-get-bib-field "title" entry))
590 ((= l ?T) (reftex-abbreviate-title
591 (org-ref-reftex-get-bib-field "title" entry)))
592 ((= l ?v) (org-ref-reftex-get-bib-field "volume" entry))
593 ((= l ?y) (org-ref-reftex-get-bib-field "year" entry)))))
596 (setq b (match-beginning 2) e (match-end 2))
597 (setq b (match-beginning 3) e (match-end 3)))
598 (setq format (concat (substring format 0 b) rpl (substring format e)))))
599 (while (string-match "%%" format)
600 (setq format (replace-match "%" t t format)))
601 (while (string-match "[ ,.;:]*%<" format)
602 (setq format (replace-match "" t t format)))
603 ;; also replace carriage returns, tabs, and multiple whitespaces
604 (setq format (replace-regexp-in-string "\n\\|\t\\|\s+" " " format))
607 (defun org-ref-get-bibtex-entry-citation (key)
608 "returns a string for the bibliography entry corresponding to key, and formatted according to the type in `org-ref-bibliography-entry-format'"
610 (let ((org-ref-bibliography-files (org-ref-find-bibliography))
611 (file) (entry) (bibtex-entry) (entry-type) (format))
613 (setq file (catch 'result
614 (loop for file in org-ref-bibliography-files do
615 (if (org-ref-key-in-file-p key (file-truename file))
617 (message "%s not found in %s" key (file-truename file))))))
620 (insert-file-contents file)
621 (bibtex-search-entry key nil 0)
622 (setq bibtex-entry (bibtex-parse-entry))
623 (setq entry-type (downcase (cdr (assoc "=type=" bibtex-entry))))
624 (setq format (cdr (assoc entry-type org-ref-bibliography-entry-format)))
626 (setq entry (org-ref-reftex-format-citation bibtex-entry format))
628 (bibtex-narrow-to-entry)
629 (setq entry (buffer-string)))))
634 : org-ref-reftex-format-citation
636 Here is how to use the function. You call it with point in an entry in a bibtex file.
638 #+BEGIN_SRC emacs-lisp :tangle no
639 (let((org-ref-bibliography-entry-format "%a, %t, <i>%j</i>, <b>%v(%n)</b>, %p (%y). <a href=\"%U\">link</a>. <a href=\"http://dx.doi.org/%D\">doi</a>."))
640 (org-ref-get-bibtex-entry-citation "armiento-2014-high"))
643 : Armiento, Kozinsky, Hautier, , Fornari \& Ceder, High-throughput screening of perovskite alloys for piezoelectric performance and thermodynamic stability, <i>Phys. Rev. B</i>, <b>89()</b>, 134103 (2014). <a href="http://link.aps.org/doi/10.1103/PhysRevB.89.134103">link</a>. <a href="http://dx.doi.org/10.1103/PhysRevB.89.134103">doi</a>.
645 I am not sure why full author names are not used.
647 This code provides some functions to generate a simple sorted bibliography in html. First we get all the keys in the buffer.
649 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
650 (defun org-ref-get-bibtex-keys ()
651 "Return a list of unique keys in the buffer."
653 (org-element-map (org-element-parse-buffer) 'link
655 (let ((plist (nth 1 link)))
656 (when (-contains? org-ref-cite-types (plist-get plist ':type))
659 (org-ref-split-and-strip-string (plist-get plist ':path)))
660 (when (not (-contains? keys key))
661 (setq keys (append keys (list key))))))))
662 ;; set with-affiliated to get keys in captions
664 ;; Sort keys alphabetically
665 (setq keys (cl-sort keys 'string-lessp :key 'downcase))
669 This function gets the html for one entry.
671 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
672 (defun org-ref-get-bibtex-entry-html (key)
673 "returns an html string for the bibliography entry corresponding to key"
675 (format "<li><a id=\"%s\">[%s] %s</a></li>" key key (org-ref-get-bibtex-entry-citation key)))
678 Now, we map over the whole list of keys, and the whole bibliography, formatted as an unordered list.
680 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
681 (defun org-ref-get-html-bibliography ()
682 "Create an html bibliography when there are keys"
683 (let ((keys (org-ref-get-bibtex-keys)))
685 (concat "<h1>Bibliography</h1>
687 (mapconcat (lambda (x) (org-ref-get-bibtex-entry-html x)) keys "\n")
691 I do not have plans to make a numbered bibliography with numbered citations anytime soon. This will require changing the way the citation links are exported, and keeping track of the numbers.
693 *** An org bibliography
694 You can export an org-file to an org-file or org-buffer (org-org-epxort-as-org). In this case, it would be useful convert the cite links to links to custom_ids, and the bibliography link to a first-level heading Bibliography with org-bibtex like headings for each entry. This code should enable this. Right now, it does not appear to work for org export though.
696 First, we get the string for a single entry.
697 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
698 (defun org-ref-get-bibtex-entry-org (key)
699 "returns an org string for the bibliography entry corresponding to key"
700 (let ((org-ref-bibliography-files (org-ref-find-bibliography))
701 (file) (entry) (bibtex-entry) (entry-type) (format))
703 (setq file (catch 'result
704 (loop for file in org-ref-bibliography-files do
705 (if (org-ref-key-in-file-p key (file-truename file))
707 (message "%s not found in %s" key (file-truename file))))))
710 (insert-file-contents file)
711 (bibtex-search-entry key nil 0)
712 (setq entry (bibtex-parse-entry))
717 " (org-ref-reftex-get-bib-field "author" entry)
718 (org-ref-reftex-get-bib-field "title" entry)
719 (concat " :CUSTOM_ID: " (org-ref-reftex-get-bib-field "=key=" entry) "\n"
720 (mapconcat (lambda (element) (format " :%s: %s"
721 (upcase (car element))
727 Now, we loop over the keys, and combine all the entries into a bibliography.
728 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
729 (defun org-ref-get-org-bibliography ()
730 "Create an org bibliography when there are keys"
731 (let ((keys (org-ref-get-bibtex-keys)))
733 (concat "* Bibliography
735 (mapconcat (lambda (x) (org-ref-get-bibtex-entry-org x)) keys "\n")
739 *** An ascii bibliography
741 This function gets the html for one entry.
743 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
744 (defun org-ref-get-bibtex-entry-ascii (key)
745 "returns an ascii string for the bibliography entry corresponding to key"
747 (format "[%s] %s" key (org-ref-get-bibtex-entry-citation key)))
750 Now, we map over the whole list of keys, and the whole bibliography, formatted as an unordered list.
752 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
753 (defun org-ref-get-ascii-bibliography ()
754 "Create an html bibliography when there are keys"
755 (let ((keys (org-ref-get-bibtex-keys)))
761 (mapconcat (lambda (x) (org-ref-get-bibtex-entry-ascii x)) keys "\n")
767 We use a link for the bibliography so that we can click on it to open the bibliography file. The link may have more than one bibliography file in it, separated by commas. Clicking opens the file under the cursor. The bibliographies should be full filenames with the bib extension. Clicking on this link makes reftex-default-bibliography local and sets it to the list of files in the link. We need this to use reftex's searching capability.
769 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
770 (org-add-link-type "bibliography"
771 ;; this code is run on clicking. The bibliography
772 ;; may contain multiple files. this code finds the
773 ;; one you clicked on and opens it.
774 (lambda (link-string)
775 ;; get link-string boundaries
776 ;; we have to go to the beginning of the line, and then search forward
779 ;; object is the link you clicked on
780 (object (org-element-context))
781 (link-string-beginning)
785 (goto-char (org-element-property :begin object))
786 (search-forward link-string nil nil 1)
787 (setq link-string-beginning (match-beginning 0))
788 (setq link-string-end (match-end 0)))
790 ;; We set the reftex-default-bibliography
791 ;; here. it should be a local variable only in
792 ;; the current buffer. We need this for using
793 ;; reftex to do citations.
794 (set (make-local-variable 'reftex-default-bibliography)
795 (split-string (org-element-property :path object) ","))
797 ;; now if we have comma separated bibliographies
798 ;; we find the one clicked on. we want to
799 ;; search forward to next comma from point
801 (if (search-forward "," link-string-end 1 1)
802 (setq key-end (- (match-end 0) 1)) ; we found a match
803 (setq key-end (point)))) ; no comma found so take the point
804 ;; and backward to previous comma from point
806 (if (search-backward "," link-string-beginning 1 1)
807 (setq key-beginning (+ (match-beginning 0) 1)) ; we found a match
808 (setq key-beginning (point)))) ; no match found
809 ;; save the key we clicked on.
810 (setq bibfile (org-ref-strip-string (buffer-substring key-beginning key-end)))
811 (find-file bibfile))) ; open file on click
814 (lambda (keyword desc format)
816 ((eq format 'org) (org-ref-get-org-bibliography))
817 ((eq format 'ascii) (org-ref-get-ascii-bibliography))
818 ((eq format 'html) (org-ref-get-html-bibliography))
820 ;; write out the latex bibliography command
821 (format "\\bibliography{%s}" (replace-regexp-in-string "\\.bib" "" (mapconcat 'identity
822 (mapcar 'expand-file-name
823 (split-string keyword ","))
828 Believe it or not, sometimes it makes sense /not/ to include the bibliography in a document (e.g. when you are required to submit references as a separate file). To generate the references, in another file, you must make a little tex file with these contents, and then compile it.
831 \input{project-description.bbl}
834 Here, we make a =nobibliography= link that acts like the bibliography, enables creation of the bbl file, but does not put an actual bibliography in the file.
836 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
837 (org-add-link-type "nobibliography"
838 ;; this code is run on clicking. The bibliography
839 ;; may contain multiple files. this code finds the
840 ;; one you clicked on and opens it.
841 (lambda (link-string)
842 ;; get link-string boundaries
843 ;; we have to go to the beginning of the line, and then search forward
846 ;; object is the link you clicked on
847 (object (org-element-context))
849 (link-string-beginning)
853 (goto-char (org-element-property :begin object))
854 (search-forward link-string nil nil 1)
855 (setq link-string-beginning (match-beginning 0))
856 (setq link-string-end (match-end 0)))
858 ;; We set the reftex-default-bibliography
859 ;; here. it should be a local variable only in
860 ;; the current buffer. We need this for using
861 ;; reftex to do citations.
862 (set (make-local-variable 'reftex-default-bibliography)
863 (split-string (org-element-property :path object) ","))
865 ;; now if we have comma separated bibliographies
866 ;; we find the one clicked on. we want to
867 ;; search forward to next comma from point
869 (if (search-forward "," link-string-end 1 1)
870 (setq key-end (- (match-end 0) 1)) ; we found a match
871 (setq key-end (point)))) ; no comma found so take the point
872 ;; and backward to previous comma from point
874 (if (search-backward "," link-string-beginning 1 1)
875 (setq key-beginning (+ (match-beginning 0) 1)) ; we found a match
876 (setq key-beginning (point)))) ; no match found
877 ;; save the key we clicked on.
878 (setq bibfile (org-ref-strip-string (buffer-substring key-beginning key-end)))
879 (find-file bibfile))) ; open file on click
882 (lambda (keyword desc format)
884 ((eq format 'org) (org-ref-get-org-bibliography))
885 ((eq format 'ascii) (org-ref-get-ascii-bibliography))
886 ((eq format 'html) (org-ref-get-html-bibliography))
888 ;; write out the latex bibliography command
890 ; (format "{\\setbox0\\vbox{\\bibliography{%s}}}"
891 ; (replace-regexp-in-string "\\.bib" "" (mapconcat 'identity
892 ; (mapcar 'expand-file-name
893 ; (split-string keyword ","))
896 (format "\\nobibliography{%s}"
897 (replace-regexp-in-string "\\.bib" "" (mapconcat 'identity
898 (mapcar 'expand-file-name
899 (split-string keyword ","))
905 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
906 (org-add-link-type "printbibliography"
907 (lambda (arg) (message "Nothing implemented for clicking here."))
908 (lambda (keyword desc format)
910 ((eq format 'org) (org-ref-get-org-bibliography))
911 ((eq format 'html) (org-ref-get-html-bibliography))
913 ;; write out the biblatex bibliography command
914 "\\printbibliography"))
918 We also create a bibliographystyle link. There is nothing to do on clicking here, and we create it for consistency. This sets the style for latex export, so use something appropriate there, e.g. unsrt, plain, plainnat, ...
920 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
921 (org-add-link-type "bibliographystyle"
922 (lambda (arg) (message "Nothing implemented for clicking here."))
923 (lambda (keyword desc format)
926 ;; write out the latex bibliography command
927 (format "\\bibliographystyle{%s}" keyword)))))
930 *** Completion for bibliography link
933 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
934 (defun org-bibliography-complete-link (&optional arg)
935 (format "bibliography:%s" (read-file-name "enter file: " nil nil t)))
937 (defun org-ref-insert-bibliography-link ()
938 "insert a bibliography with completion"
940 (insert (org-bibliography-complete-link)))
944 This is apparently used for biblatex.
945 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
946 (org-add-link-type "addbibresource"
947 ;; this code is run on clicking. The addbibresource
948 ;; may contain multiple files. this code finds the
949 ;; one you clicked on and opens it.
950 (lambda (link-string)
951 ;; get link-string boundaries
952 ;; we have to go to the beginning of the line, and then search forward
955 ;; object is the link you clicked on
956 (object (org-element-context))
958 (link-string-beginning)
962 (goto-char (org-element-property :begin object))
963 (search-forward link-string nil nil 1)
964 (setq link-string-beginning (match-beginning 0))
965 (setq link-string-end (match-end 0)))
967 ;; We set the reftex-default-addbibresource
968 ;; here. it should be a local variable only in
969 ;; the current buffer. We need this for using
970 ;; reftex to do citations.
971 (set (make-local-variable 'reftex-default-addbibresource)
972 (split-string (org-element-property :path object) ","))
974 ;; now if we have comma separated bibliographies
975 ;; we find the one clicked on. we want to
976 ;; search forward to next comma from point
978 (if (search-forward "," link-string-end 1 1)
979 (setq key-end (- (match-end 0) 1)) ; we found a match
980 (setq key-end (point)))) ; no comma found so take the point
981 ;; and backward to previous comma from point
983 (if (search-backward "," link-string-beginning 1 1)
984 (setq key-beginning (+ (match-beginning 0) 1)) ; we found a match
985 (setq key-beginning (point)))) ; no match found
986 ;; save the key we clicked on.
987 (setq bibfile (org-ref-strip-string (buffer-substring key-beginning key-end)))
988 (find-file bibfile))) ; open file on click
991 (lambda (keyword desc format)
993 ((eq format 'html) (format "")); no output for html
995 ;; write out the latex addbibresource command
996 (format "\\addbibresource{%s}" keyword)))))
1001 In long documents, a list of figures is not uncommon. Here we create a clickable link that generates a temporary buffer containing a list of figures in the document, and their captions. We make a function that can be called interactively, and define a link type that is rendered in LaTeX to create the list of figures.
1003 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1004 (defun org-ref-list-of-figures (&optional arg)
1005 "Generate buffer with list of figures in them"
1007 (save-excursion (widen)
1008 (let* ((c-b (buffer-name))
1011 (org-element-map (org-element-parse-buffer) 'link
1013 "create a link for to the figure"
1015 (and (string= (org-element-property :type link) "file")
1017 "[^.]*\\.\\(png\\|jpg\\|eps\\|pdf\\)$"
1018 (org-element-property :path link)))
1021 (let* ((start (org-element-property :begin link))
1022 (parent (car (cdr (org-element-property :parent link))))
1023 (caption (caaar (plist-get parent :caption)))
1024 (name (plist-get parent :name)))
1027 "[[elisp:(progn (switch-to-buffer \"%s\")(widen)(goto-char %s))][figure %s: %s]] %s\n"
1028 c-b start counter (or name "") caption)
1030 "[[elisp:(progn (switch-to-buffer \"%s\")(widen)(goto-char %s))][figure %s: %s]]\n"
1031 c-b start counter (or name "")))))))))
1032 (switch-to-buffer "*List of Figures*")
1033 (setq buffer-read-only nil)
1036 (insert (mapconcat 'identity list-of-figures ""))
1037 (setq buffer-read-only t)
1038 (use-local-map (copy-keymap org-mode-map))
1039 (local-set-key "q" #'(lambda () (interactive) (kill-buffer))))))
1043 'org-ref-list-of-figures ; on click
1044 (lambda (keyword desc format)
1047 (format "\\listoffigures")))))
1052 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1053 (defun org-ref-list-of-tables (&optional arg)
1054 "Generate a buffer with a list of tables"
1058 (let* ((c-b (buffer-name))
1061 (org-element-map (org-element-parse-buffer 'element) 'table
1063 "create a link for to the table"
1065 (let ((start (org-element-property :begin table))
1066 (name (org-element-property :name table))
1067 (caption (caaar (org-element-property :caption table))))
1070 "[[elisp:(progn (switch-to-buffer \"%s\")(widen)(goto-char %s))][table %s: %s]] %s\n"
1071 c-b start counter (or name "") caption)
1073 "[[elisp:(progn (switch-to-buffer \"%s\")(widen)(goto-char %s))][table %s: %s]]\n"
1074 c-b start counter (or name ""))))))))
1075 (switch-to-buffer "*List of Tables*")
1076 (setq buffer-read-only nil)
1079 (insert (mapconcat 'identity list-of-tables ""))
1080 (setq buffer-read-only t)
1081 (use-local-map (copy-keymap org-mode-map))
1082 (local-set-key "q" #'(lambda () (interactive) (kill-buffer))))))
1086 'org-ref-list-of-tables
1087 (lambda (keyword desc format)
1090 (format "\\listoftables")))))
1094 The label link provides a way to create labels in org-mode. We make it clickable because we want to make sure labels are unique. This code will tell you how many instances of a label are found. We search for label links, LaTeX labels, and org-mode format for labels, tblnames too.
1096 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1097 (defun org-ref-count-labels (label)
1098 "Counts number of matches for label in the document"
1099 (+ (count-matches (format "label:%s\\b[^-:]" label) (point-min) (point-max))
1100 ;; for tblname, it is not enough to get word boundary
1101 ;; tab-little and tab-little-2 match then.
1102 (count-matches (format "^#\\+tblname:\\s-*%s\\b[^-:]" label) (point-min) (point-max))
1103 (count-matches (format "\\label{%s}" label) (point-min) (point-max))
1104 ;; this is the org-format #+label:
1105 (count-matches (format "^#\\+label:\\s-*%s\\b[^-:]" label) (point-min) (point-max))
1106 (let ((custom-id-count 0))
1109 (when (string= label (org-entry-get (point) "CUSTOM_ID"))
1110 (setq custom-id-count (+ 1 custom-id-count)))))
1116 "on clicking count the number of label tags used in the buffer. A number greater than one means multiple labels!"
1117 (let ((count (org-ref-count-labels label)))
1118 (message (format "%s occurence%s"
1124 (org-ref-count-labels label))))
1125 (lambda (keyword desc format)
1127 ((eq format 'html) (format "(<label>%s</label>)" path))
1129 (format "\\label{%s}" keyword)))))
1132 We want to store links on labels, so you can put the cursor on the label, press C-c l, and later use C-c C-l to insert a link to the label. We also want to store links to tables with a table name, and for sections with CUSTOM_ID.
1134 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1135 (defun org-label-store-link ()
1136 "store a link to a label. The output will be a ref to that label"
1137 ;; First we have to make sure we are on a label link.
1138 (let* ((object (org-element-context)))
1139 (when (and (equal (org-element-type object) 'link)
1140 (equal (org-element-property :type object) "label"))
1141 (org-store-link-props
1143 :link (concat "ref:" (org-element-property :path object))))
1145 ;; Store link on table
1146 (when (equal (org-element-type object) 'table)
1147 (org-store-link-props
1149 :link (concat "ref:" (org-element-property :name object))))
1151 ;; it turns out this does not work. you can already store a link to a heading with a CUSTOM_ID
1152 ;; store link on heading with custom_id
1153 ; (when (and (equal (org-element-type object) 'headline)
1154 ; (org-entry-get (point) "CUSTOM_ID"))
1155 ; (org-store-link-props
1157 ; :link (concat "ref:" (org-entry-get (point) "CUSTOM_ID"))))
1159 ;; and to #+label: lines
1160 (when (and (equal (org-element-type object) 'paragraph)
1161 (org-element-property :name object))
1162 (org-store-link-props
1164 :link (concat "ref:" (org-element-property :name object))))
1167 (add-hook 'org-store-link-functions 'org-label-store-link)
1171 The ref link allows you make links to labels. Clicking on the link takes you to the label, and provides a mark to go back to.
1173 At the moment, ref links are not usable for section links. You need [[#CUSTOM_ID]] type links.
1175 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1179 "on clicking goto the label. Navigate back with C-c &"
1180 (org-mark-ring-push)
1181 ;; next search from beginning of the buffer
1183 ;; it is possible you would not find the label if narrowing is in effect
1190 (goto-char (point-min))
1191 (re-search-forward (format "label:%s\\b" label) nil t))
1195 (goto-char (point-min))
1196 (re-search-forward (format "\\label{%s}" label) nil t))
1198 ;; #+label: name org-definition
1200 (goto-char (point-min))
1201 (re-search-forward (format "^#\\+label:\\s-*\\(%s\\)\\b" label) nil t))
1205 (goto-char (point-min))
1206 (re-search-forward (format "^#\\+tblname:\\s-*\\(%s\\)\\b" label) nil t))
1208 ;; Commented out because these ref links do not actually translate correctly in LaTeX.
1209 ;; you need [[#label]] links.
1212 ; (goto-char (point-min))
1213 ; (re-search-forward (format ":CUSTOM_ID:\s-*\\(%s\\)" label) nil t))
1215 ;; we did not find anything, so go back to where we came
1216 (org-mark-ring-goto)
1217 (error "%s not found" label))
1219 (message "go back with (org-mark-ring-goto) `C-c &`"))
1221 (lambda (keyword desc format)
1223 ((eq format 'html) (format "(<ref>%s</ref>)" path))
1225 (format "\\ref{%s}" keyword)))))
1228 It would be nice to use completion to enter a ref link, where a list of labels is provided. The following code searches the buffer for org and latex labels, custom_ids, and table names as potential items to make a ref link to.
1230 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1231 (defun org-ref-get-org-labels ()
1232 "Return a list of #+LABEL: labels."
1234 (goto-char (point-min))
1235 (let ((matches '()))
1236 (while (re-search-forward "^#\\+label:\\s-+\\(.*\\)\\b" (point-max) t)
1237 (add-to-list 'matches (match-string-no-properties 1) t))
1241 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1242 (defun org-ref-get-custom-ids ()
1243 "Return a list of custom_id properties in the buffer."
1244 (let ((results '()) custom_id)
1247 (let ((custom_id (org-entry-get (point) "CUSTOM_ID")))
1248 (when (not (null custom_id))
1249 (setq results (append results (list custom_id)))))))
1253 Here we get a list of the labels defined as raw latex labels, e.g. \label{eqtre}.
1254 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1255 (defun org-ref-get-latex-labels ()
1257 (goto-char (point-min))
1258 (let ((matches '()))
1259 (while (re-search-forward "\\\\label{\\([a-zA-z0-9:-]*\\)}" (point-max) t)
1260 (add-to-list 'matches (match-string-no-properties 1) t))
1264 Finally, we get the table names.
1266 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1267 (defun org-ref-get-tblnames ()
1268 "Return list of table names in the buffer."
1269 (org-element-map (org-element-parse-buffer 'element) 'table
1271 (org-element-property :name table))))
1274 Now, we can put all the labels together which will give us a list of candidates.
1276 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1277 (defun org-ref-get-labels ()
1278 "Returns a list of labels in the buffer that you can make a ref link to.
1279 This is used to auto-complete ref links and in helm menus."
1283 (goto-char (point-min))
1284 (let ((matches '()))
1285 ;; these are the label:stuff kinds
1286 (while (re-search-forward "[^#+]label:\\([a-zA-z0-9:-]*\\)" (point-max) t)
1287 (add-to-list 'matches (match-string-no-properties 1) t))
1289 (org-ref-get-org-labels)
1290 (org-ref-get-latex-labels)
1291 (org-ref-get-tblnames)
1292 (org-ref-get-custom-ids))))))
1295 Let us make a helm function to insert a label link. This will help you enter unique labels by showing matching labels until they are all gone and you are left with a unique one. If you are on a link, it means you want to replace it.
1296 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1297 (defun org-ref-helm-insert-label-link ()
1298 "Insert a label link. helm just shows you what labels already exist.
1299 If you are on a label link, replace it."
1301 (let* ((labels (org-ref-get-labels))
1302 (cb (current-buffer)))
1303 (helm :sources `(((name . "Existing labels")
1304 (candidates . ,labels)
1305 ;; default action is to open to the label
1306 (action . (lambda (label)
1307 ;; unfortunately I do not have markers here
1308 (org-open-link-from-string (format "ref:%s" label))))
1309 ;; if you select a label, replace current one
1310 (action . (lambda (label)
1311 (switch-to-buffer ,cb)
1313 ;; no prefix or on a link
1314 ((equal helm-current-prefix-arg nil)
1315 (let* ((object (org-element-context))
1316 (last-char (save-excursion
1317 (goto-char (org-element-property :end object))
1319 (if (looking-at " ")
1322 (when (-contains? '("label")
1323 (org-element-property :type object))
1324 ;; we are on a link, so replace it.
1327 (org-element-property :begin object)
1328 (org-element-property :end object))
1330 (replace-regexp-in-string
1331 (org-element-property :path object)
1333 (org-element-property :raw-link object))
1335 ;; no prefix options defined
1337 ;; no matching selection creates a new label
1338 ((name . "Create new label")
1340 ;; default action creates a new label, or replaces old one
1341 (action . (lambda (label)
1342 (switch-to-buffer ,cb)
1343 (let* ((object (org-element-context))
1344 (last-char (save-excursion
1345 (goto-char (org-element-property :end object))
1347 (if (looking-at " ")
1350 (if (-contains? '("label")
1351 (org-element-property :type object))
1352 ;; we are on a link, so replace it.
1355 (org-element-property :begin object)
1356 (org-element-property :end object))
1358 (replace-regexp-in-string
1359 (org-element-property :path object)
1361 (org-element-property :raw-link object))
1368 helm-pattern))))))))))))
1371 Now we create a completion function. This works from the org-machinery, e.g. if you type C-c C-l to insert a link, and use completion by pressing tab.
1373 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1374 (defun org-ref-complete-link (&optional arg)
1375 "Completion function for ref links"
1377 (setq label (completing-read "label: " (org-ref-get-labels)))
1378 (format "ref:%s" label)))
1381 Alternatively, you may want to just call a function that inserts a link with completion:
1383 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1384 (defun org-ref-insert-ref-link ()
1386 (insert (org-ref-complete-link)))
1389 Another alternative ref insertion is to use helm.
1391 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1392 (defun org-ref-helm-insert-ref-link ()
1393 "Helm menu to insert ref links to labels in the document.
1394 If you are on link, replace with newly selected label.
1395 Use C-u to insert a different kind of ref link.
1396 Use C-u C-u to insert a [[#custom-id]] link
1399 (let* ((labels (org-ref-get-labels))
1400 (bs (buffer-string))
1401 (contexts (with-temp-buffer
1403 (mapcar 'org-ref-get-label-context labels)))
1404 (cb (current-buffer)))
1406 (helm :input (thing-at-point 'word)
1407 :sources `(((name . "Available labels to ref")
1408 (candidates . ,(loop for label in labels
1409 for context in contexts
1410 ;; we do some kludgy adding spaces
1411 ;; and bars to make it "easier" to
1413 collect (cons (concat
1418 (split-string context "\n")
1421 ;; default action to replace or insert ref link.
1422 (action . (lambda (label)
1423 (switch-to-buffer ,cb)
1426 ;; no prefix or on a link
1427 ((equal helm-current-prefix-arg nil)
1428 (let* ((object (org-element-context))
1429 (last-char (save-excursion
1430 (goto-char (org-element-property :end object))
1432 (if (looking-at " ")
1435 (if (-contains? '("ref" "eqref" "pageref" "nameref")
1436 (org-element-property :type object))
1437 ;; we are on a link, so replace it.
1440 (org-element-property :begin object)
1441 (org-element-property :end object))
1443 (replace-regexp-in-string
1444 (org-element-property :path object)
1446 (org-element-property :raw-link object))
1448 ;; insert a new link
1453 ;; one prefix, alternate ref link
1454 ((equal helm-current-prefix-arg '(4))
1457 (helm :sources '((name . "Ref link types")
1458 (candidates . ("ref" "eqref" "pageref" "nameref"))
1459 (action . (lambda (x) x))))
1461 ;; two prefixes, insert section custom-id link
1462 ((equal helm-current-prefix-arg '(16))
1464 (format "[[#%s]]" label)))
1470 : org-ref-helm-insert-ref-link
1474 This refers to the page of a label in LaTeX.
1476 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1480 "on clicking goto the label. Navigate back with C-c &"
1481 (org-mark-ring-push)
1482 ;; next search from beginning of the buffer
1488 (goto-char (point-min))
1489 (re-search-forward (format "label:%s\\b" label) nil t))
1493 (goto-char (point-min))
1494 (re-search-forward (format "\\label{%s}" label) nil t))
1496 ;; #+label: name org-definition
1498 (goto-char (point-min))
1499 (re-search-forward (format "^#\\+label:\\s-*\\(%s\\)\\b" label) nil t))
1503 (goto-char (point-min))
1504 (re-search-forward (format "^#\\+tblname:\\s-*\\(%s\\)\\b" label) nil t))
1506 ;; Commented out because these ref links do not actually translate correctly in LaTeX.
1507 ;; you need [[#label]] links.
1510 ; (goto-char (point-min))
1511 ; (re-search-forward (format ":CUSTOM_ID:\s-*\\(%s\\)" label) nil t))
1513 ;; we did not find anything, so go back to where we came
1514 (org-mark-ring-goto)
1515 (error "%s not found" label))
1516 (message "go back with (org-mark-ring-goto) `C-c &`"))
1518 (lambda (keyword desc format)
1520 ((eq format 'html) (format "(<pageref>%s</pageref>)" path))
1522 (format "\\pageref{%s}" keyword)))))
1525 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1526 (defun org-pageref-complete-link (&optional arg)
1527 "Completion function for ref links"
1529 (setq label (completing-read "label: " (org-ref-get-labels)))
1530 (format "ref:%s" label)))
1533 Alternatively, you may want to just call a function that inserts a link with completion:
1535 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1536 (defun org-pageref-insert-ref-link ()
1538 (insert (org-pageref-complete-link)))
1543 The nameref link allows you make links to the text of a section with a label. Clicking on the link takes you to the label, and provides a mark to go back to. This only works if you put a raw latex label in the headline.
1545 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1549 "on clicking goto the label. Navigate back with C-c &"
1550 (org-mark-ring-push)
1551 ;; next search from beginning of the buffer
1557 (goto-char (point-min))
1558 (re-search-forward (format "\\label{%s}" label) nil t))
1560 ;; we did not find anything, so go back to where we came
1561 (org-mark-ring-goto)
1562 (error "%s not found" label))
1563 (message "go back with (org-mark-ring-goto) `C-c &`"))
1565 (lambda (keyword desc format)
1567 ((eq format 'html) (format "(<nameref>%s</nameref>)" path))
1569 (format "\\nameref{%s}" keyword)))))
1573 This is just the LaTeX ref for equations. On export, the reference is enclosed in parentheses.
1575 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1579 "on clicking goto the label. Navigate back with C-c &"
1580 (org-mark-ring-push)
1581 ;; next search from beginning of the buffer
1583 (goto-char (point-min))
1586 ;; search forward for the first match
1588 (re-search-forward (format "label:%s" label) nil t)
1590 (re-search-forward (format "\\label{%s}" label) nil t)
1591 ;; #+label: name org-definition
1592 (re-search-forward (format "^#\\+label:\\s-*\\(%s\\)\\b" label) nil t))
1593 (org-mark-ring-goto)
1594 (error "%s not found" label))
1595 (message "go back with (org-mark-ring-goto) `C-c &`"))
1597 (lambda (keyword desc format)
1599 ((eq format 'html) (format "(<eqref>%s</eqref>)" path))
1601 (format "\\eqref{%s}" keyword)))))
1605 This is the main reason this library exists. We want the following behavior. A cite link should be able to contain multiple bibtex keys. You should be able to click on the link, and get a brief citation of the entry for that key, and a menu of options to open the bibtex file, open a pdf if you have it, open your notes on the entry, or open a url if it exists. You should be able to insert new references onto an existing cite link, or create new ones easily. The following code implements these features.
1607 *** Implementing the click actions of cite
1609 **** Getting the key we clicked on
1610 The first thing we need is to get the bibtex key we clicked on.
1612 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1613 (defun org-ref-get-bibtex-key-under-cursor ()
1614 "returns key under the bibtex cursor. We search forward from
1615 point to get a comma, or the end of the link, and then backwards
1616 to get a comma, or the beginning of the link. that delimits the
1617 keyword we clicked on. We also strip the text properties."
1619 (let* ((object (org-element-context))
1620 (link-string (org-element-property :path object)))
1621 ;; you may click on the part before the citations. here we make
1622 ;; sure to move to the beginning so you get the first citation.
1624 (goto-char (org-element-property :begin object))
1625 (search-forward link-string (org-element-property :end object))
1626 (goto-char (match-beginning 0))
1627 ;; check if we clicked before the path and move as needed.
1628 (unless (< cp (point))
1631 (if (not (org-element-property :contents-begin object))
1632 ;; this means no description in the link
1634 ;; we need the link path start and end
1636 (goto-char (org-element-property :begin object))
1637 (search-forward link-string nil nil 1)
1638 (setq link-string-beginning (match-beginning 0))
1639 (setq link-string-end (match-end 0)))
1641 ;; The key is the text between commas, or the link boundaries
1643 (if (search-forward "," link-string-end t 1)
1644 (setq key-end (- (match-end 0) 1)) ; we found a match
1645 (setq key-end link-string-end))) ; no comma found so take the end
1646 ;; and backward to previous comma from point which defines the start character
1648 (if (search-backward "," link-string-beginning 1 1)
1649 (setq key-beginning (+ (match-beginning 0) 1)) ; we found a match
1650 (setq key-beginning link-string-beginning))) ; no match found
1651 ;; save the key we clicked on.
1652 (setq bibtex-key (org-ref-strip-string (buffer-substring key-beginning key-end)))
1653 (set-text-properties 0 (length bibtex-key) nil bibtex-key)
1655 ;; link with description. assume only one key
1659 We also need to find which bibliography file that key is in. For that, we need to know which bibliography files are referred to in the file. If none are specified with a bibliography link, we use the default bibliography. This function searches for a bibliography link, and then the LaTeX bibliography link. We also consider the addbibresource link which is used with biblatex.
1661 **** Getting the bibliographies
1662 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1663 (defun org-ref-find-bibliography ()
1664 "find the bibliography in the buffer.
1665 This function sets and returns cite-bibliography-files, which is a list of files
1666 either from bibliography:f1.bib,f2.bib
1667 \bibliography{f1,f2}
1668 internal bibliographies
1670 falling back to what the user has set in org-ref-default-bibliography
1675 (goto-char (point-min))
1676 ;; look for a bibliography link
1677 (when (re-search-forward "\\<bibliography:\\([^\]\|\n]+\\)" nil t)
1678 (setq org-ref-bibliography-files
1679 (mapcar 'org-ref-strip-string (split-string (match-string 1) ",")))
1680 (throw 'result org-ref-bibliography-files))
1683 ;; we did not find a bibliography link. now look for \bibliography
1684 (goto-char (point-min))
1685 (when (re-search-forward "\\\\bibliography{\\([^}]+\\)}" nil t)
1686 ;; split, and add .bib to each file
1687 (setq org-ref-bibliography-files
1688 (mapcar (lambda (x) (concat x ".bib"))
1689 (mapcar 'org-ref-strip-string
1690 (split-string (match-string 1) ","))))
1691 (throw 'result org-ref-bibliography-files))
1693 ;; no bibliography found. maybe we need a biblatex addbibresource
1694 (goto-char (point-min))
1695 ;; look for a bibliography link
1696 (when (re-search-forward "addbibresource:\\([^\]\|\n]+\\)" nil t)
1697 (setq org-ref-bibliography-files
1698 (mapcar 'org-ref-strip-string (split-string (match-string 1) ",")))
1699 (throw 'result org-ref-bibliography-files))
1701 ;; we did not find anything. use defaults
1702 (setq org-ref-bibliography-files org-ref-default-bibliography)))
1704 ;; set reftex-default-bibliography so we can search
1705 (set (make-local-variable 'reftex-default-bibliography) org-ref-bibliography-files)
1706 org-ref-bibliography-files)
1709 **** Finding the bibliography file a key is in
1710 Now, we can see if an entry is in a file.
1712 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1713 (defun org-ref-key-in-file-p (key filename)
1714 "determine if the key is in the file"
1715 (interactive "skey: \nsFile: ")
1716 (save-current-buffer
1717 (let ((bibtex-files (list filename)))
1718 (bibtex-search-entry key t))))
1721 Finally, we want to know which file the key is in.
1723 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1724 (defun org-ref-get-bibtex-key-and-file (&optional key)
1725 "returns the bibtex key and file that it is in. If no key is provided, get one under point"
1727 (let ((org-ref-bibliography-files (org-ref-find-bibliography))
1730 (setq key (org-ref-get-bibtex-key-under-cursor)))
1731 (setq file (catch 'result
1732 (loop for file in org-ref-bibliography-files do
1733 (if (org-ref-key-in-file-p key (file-truename file))
1734 (throw 'result file)))))
1738 **** convenience functions to act on citation at point
1740 :ID: af0b2a82-a7c9-4c08-9dac-09f93abc4a92
1742 We need some convenience functions to open act on the citation at point. These will get the pdf, open the url, or open the notes.
1744 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1745 (defun org-ref-open-pdf-at-point ()
1746 "open the pdf for bibtex key under point if it exists"
1748 (let* ((results (org-ref-get-bibtex-key-and-file))
1750 (pdf-file (format (concat org-ref-pdf-directory "%s.pdf") key)))
1751 (if (file-exists-p pdf-file)
1752 (org-open-file pdf-file)
1753 (message "no pdf found for %s" key))))
1756 (defun org-ref-open-url-at-point ()
1757 "open the url for bibtex key under point."
1759 (let* ((results (org-ref-get-bibtex-key-and-file))
1761 (bibfile (cdr results)))
1764 (insert-file-contents bibfile)
1765 (bibtex-search-entry key)
1766 ;; I like this better than bibtex-url which does not always find
1769 (let ((url (bibtex-autokey-get-field "url")))
1774 (let ((doi (bibtex-autokey-get-field "doi")))
1776 (if (string-match "^http" doi)
1778 (browse-url (format "http://dx.doi.org/%s" doi)))
1779 (throw 'done nil))))))))
1782 (defun org-ref-open-notes-at-point ()
1783 "open the notes for bibtex key under point."
1785 (let* ((results (org-ref-get-bibtex-key-and-file))
1787 (bibfile (cdr results)))
1790 (insert-file-contents bibfile)
1791 (bibtex-search-entry key)
1792 (org-ref-open-bibtex-notes)))))
1795 (defun org-ref-citation-at-point ()
1796 "give message of current citation at point"
1798 (let* ((cb (current-buffer))
1799 (results (org-ref-get-bibtex-key-and-file))
1801 (bibfile (cdr results)))
1802 (message "%s" (progn
1804 (insert-file-contents bibfile)
1805 (bibtex-search-entry key)
1806 (org-ref-bib-citation))))))
1809 (defun org-ref-open-citation-at-point ()
1810 "open bibtex file to key at point"
1812 (let* ((cb (current-buffer))
1813 (results (org-ref-get-bibtex-key-and-file))
1815 (bibfile (cdr results)))
1817 (bibtex-search-entry key)))
1820 **** the actual minibuffer menu
1821 Now, we create the menu. This is a rewrite of the cite action. This makes the function extendable by users.
1823 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
1824 (defvar org-ref-cite-menu-funcs '()
1825 "Functions to run on cite click menu. Each entry is a list of (key menu-name function).
1826 The function must take no arguments and work on the key at point. Do not modify this variable, it is set to empty in the menu click function, and functions are conditionally added to it.")
1829 (defvar org-ref-user-cite-menu-funcs
1830 '(("C" "rossref" org-ref-crossref-at-point)
1831 ("y" "Copy entry to file" org-ref-copy-entry-at-point-to-file)
1832 ("s" "Copy summary" org-ref-copy-entry-as-summary))
1833 "user-defined functions to run on bibtex key at point.")
1836 (defun org-ref-copy-entry-as-summary ()
1837 "Copy the bibtex entry for the citation at point as a summary."
1839 (save-window-excursion
1840 (org-ref-open-citation-at-point)
1841 (kill-new (org-ref-bib-citation))))
1844 (defun org-ref-copy-entry-at-point-to-file ()
1845 "Copy the bibtex entry for the citation at point to NEW-FILE.
1846 Prompt for NEW-FILE includes bib files in org-ref-default-bibliography, and bib files in current working directory. You can also specify a new file."
1848 (let ((new-file (ido-completing-read
1850 (append org-ref-default-bibliography
1851 (f-entries "." (lambda (f) (f-ext? f "bib"))))))
1852 (key (org-ref-get-bibtex-key-under-cursor)))
1853 (save-window-excursion
1854 (org-ref-open-citation-at-point)
1855 (bibtex-copy-entry-as-kill))
1857 (let ((bibtex-files (list (file-truename new-file))))
1858 (if (assoc key (bibtex-global-key-alist))
1859 (message "That key already exists in %s" new-file)
1861 (save-window-excursion
1862 (find-file new-file)
1863 (goto-char (point-max))
1864 ;; make sure we are at the beginning of a line.
1865 (unless (looking-at "^") (insert "\n\n"))
1870 (defun org-ref-get-doi-at-point ()
1871 "Get doi for key at point."
1873 (let* ((results (org-ref-get-bibtex-key-and-file))
1875 (bibfile (cdr results))
1879 (insert-file-contents bibfile)
1880 (bibtex-search-entry key)
1881 (setq doi (bibtex-autokey-get-field "doi"))
1882 ;; in case doi is a url, remove the url part.
1883 (replace-regexp-in-string "^http://dx.doi.org/" "" doi)))))
1886 ;; functions that operate on key at point for click menu
1887 (defun org-ref-wos-at-point ()
1888 "open the doi in wos for bibtex key under point."
1890 (doi-utils-wos (org-ref-get-doi-at-point)))
1893 (defun org-ref-wos-citing-at-point ()
1894 "open the doi in wos citing articles for bibtex key under point."
1896 (doi-utils-wos-citing (org-ref-get-doi-at-point)))
1899 (defun org-ref-wos-related-at-point ()
1900 "open the doi in wos related articles for bibtex key under point."
1902 (doi-utils-wos-related (org-ref-get-doi-at-point)))
1905 (defun org-ref-google-scholar-at-point ()
1906 "open the doi in google scholar for bibtex key under point."
1908 (doi-utils-google-scholar (org-ref-get-doi-at-point)))
1911 (defun org-ref-pubmed-at-point ()
1912 "open the doi in pubmed for bibtex key under point."
1914 (doi-utils-pubmed (org-ref-get-doi-at-point)))
1917 (defun org-ref-crossref-at-point ()
1918 "open the doi in crossref for bibtex key under point."
1920 (doi-utils-crossref (org-ref-get-doi-at-point)))
1923 (defun org-ref-cite-onclick-minibuffer-menu (&optional link-string)
1924 "action when a cite link is clicked on.
1925 Provides a menu of context sensitive actions. If the bibtex entry has a pdf, you get an option to open it. If there is a doi, you get a lot of options."
1927 (let* ((results (org-ref-get-bibtex-key-and-file))
1929 (pdf-file (format (concat org-ref-pdf-directory "%s.pdf") key))
1930 (bibfile (cdr results))
1931 (url (save-excursion
1933 (insert-file-contents bibfile)
1934 (bibtex-search-entry key)
1935 (bibtex-autokey-get-field "url"))))
1936 (doi (save-excursion
1938 (insert-file-contents bibfile)
1939 (bibtex-search-entry key)
1940 ;; I like this better than bibtex-url which does not always find
1942 (bibtex-autokey-get-field "doi")))))
1944 (when (string= "" doi) (setq doi nil))
1945 (when (string= "" url) (setq url nil))
1946 (setq org-ref-cite-menu-funcs '())
1952 'org-ref-cite-menu-funcs
1953 '("o" "pen" org-ref-open-citation-at-point)))
1956 (when (file-exists-p pdf-file)
1958 'org-ref-cite-menu-funcs
1959 `("p" "df" ,org-ref-open-pdf-function) t))
1963 'org-ref-cite-menu-funcs
1964 '("n" "otes" org-ref-open-notes-at-point) t)
1969 'org-ref-cite-menu-funcs
1970 '("u" "rl" org-ref-open-url-at-point) t))
1975 'org-ref-cite-menu-funcs
1976 '("w" "os" org-ref-wos-at-point) t)
1979 'org-ref-cite-menu-funcs
1980 '("c" "iting" org-ref-wos-citing-at-point) t)
1983 'org-ref-cite-menu-funcs
1984 '("r" "elated" org-ref-wos-related-at-point) t)
1987 'org-ref-cite-menu-funcs
1988 '("g" "oogle scholar" org-ref-google-scholar-at-point) t)
1991 'org-ref-cite-menu-funcs
1992 '("P" "ubmed" org-ref-pubmed-at-point) t))
1994 ;; add user functions
1995 (dolist (tup org-ref-user-cite-menu-funcs)
1997 'org-ref-cite-menu-funcs
2002 'org-ref-cite-menu-funcs
2003 '("q" "uit" (lambda ())) t)
2005 ;; now we make a menu
2006 ;; construct menu string as a message
2009 (let* ((results (org-ref-get-bibtex-key-and-file))
2011 (bibfile (cdr results)))
2014 (insert-file-contents bibfile)
2015 (bibtex-search-entry key)
2016 (org-ref-bib-citation))))
2020 (concat "[" (elt tup 0) "]"
2022 org-ref-cite-menu-funcs "")))
2024 (let* ((input (read-char-exclusive))
2026 (char-to-string input) org-ref-cite-menu-funcs)))
2027 ;; now run the function (2nd element in choice)
2036 : org-ref-cite-onclick-minibuffer-menu
2038 *** A function to format a cite link
2040 Next, we define a formatting function for the cite link. This is done so that the cite link definition is very short, and easy to change. You just need to specify the functions in the definition. This function is deprecated. The formatting is defined later automatically.
2042 #+BEGIN_SRC emacs-lisp :tangle no
2043 ;(defun org-ref-cite-link-format (keyword desc format)
2045 ; ((eq format 'html) (mapconcat (lambda (key) (format "<a name=\"#%s\">%s</a>" key key) (org-ref-split-and-strip-string keyword) ",")))
2046 ; ((eq format 'latex)
2047 ; (concat "\\cite" (when desc (format "[%s]" desc)) "{"
2048 ; (mapconcat (lambda (key) key) (org-ref-split-and-strip-string keyword) ",")
2052 *** The actual cite link
2053 Finally, we define the cite link. This is deprecated; the links are autogenerated later. This is here for memory.
2055 #+BEGIN_SRC emacs-lisp :tangle no
2058 ; 'org-ref-cite-onclick-minibuffer-menu
2059 ; 'org-ref-cite-link-format)
2062 *** Automatic definition of the cite links
2063 There are many different kinds of citations in LaTeX, but they are all variants of a basic syntax of \citetype[optional text]{label1,label2}. Here we use lisp to generate the link definitions. We define a function that creates the code to create the link, and then we evaluate it. We also create the completion function for the new link, and add it to the list of known links.
2065 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2066 (defmacro org-ref-make-completion-function (type)
2067 `(defun ,(intern (format "org-%s-complete-link" type)) (&optional arg)
2073 (let ((bibtex-files (org-ref-find-bibliography)))
2074 (bibtex-global-key-alist))))))
2077 We will want to generate formatting functions for each citation type. The reason for doing this is so we can on the fly change the formatting later.
2079 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2080 (defmacro org-ref-make-format-function (type)
2081 `(defun ,(intern (format "org-ref-format-%s" type)) (keyword desc format)
2086 (format "[[#%s][%s]]" key key))
2087 (org-ref-split-and-strip-string keyword) ","))
2094 (org-ref-split-and-strip-string keyword) ",") "]"))
2099 (format "<a href=\"#%s\">%s</a>" key key))
2100 (org-ref-split-and-strip-string keyword) ","))
2103 (if (string= (substring type -1) "s")
2104 ;; biblatex format for multicite commands, which all end in s. These are formated as \cites{key1}{key2}...
2105 (concat "\\" ,type (mapconcat (lambda (key) (format "{%s}" key))
2106 (org-ref-split-and-strip-string keyword) ""))
2108 (concat "\\" ,type (when desc (org-ref-format-citation-description desc)) "{"
2109 (mapconcat (lambda (key) key) (org-ref-split-and-strip-string keyword) ",")
2111 ;; for markdown we generate pandoc citations
2114 (desc ;; pre and or post text
2115 (let* ((text (split-string desc "::"))
2119 (format "[@%s," keyword)
2120 (when pre (format " %s" pre))
2121 (when post (format ", %s" post))
2126 (lambda (key) (concat "@" key))
2127 (org-ref-split-and-strip-string keyword)
2133 We create the links by mapping the function onto the list of defined link types.
2135 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2136 (defun org-ref-format-citation-description (desc)
2137 "return formatted citation description. if the cite link has a description, it is optional text for the citation command. You can specify pre and post text by separating these with ::."
2140 ((string-match "::" desc)
2141 (format "[%s][%s]" (car (setq results (split-string desc "::"))) (cadr results)))
2142 (t (format "[%s]" desc))))
2144 (defun org-ref-define-citation-link (type &optional key)
2145 "add a citation link for org-ref. With optional key, set the reftex binding. For example:
2146 (org-ref-define-citation-link \"citez\" ?z) will create a new citez link, with reftex key of z,
2147 and the completion function."
2148 (interactive "sCitation Type: \ncKey: ")
2150 ;; create the formatting function
2151 (eval `(org-ref-make-format-function ,type))
2156 org-ref-cite-onclick-function
2157 (quote ,(intern (format "org-ref-format-%s" type)))))
2159 ;; create the completion function
2160 (eval `(org-ref-make-completion-function ,type))
2162 ;; store new type so it works with adding citations, which checks
2163 ;; for existence in this list
2164 (add-to-list 'org-ref-cite-types type)
2166 ;; and finally if a key is specified, we modify the reftex menu
2168 (setf (nth 2 (assoc 'org reftex-cite-format-builtin))
2169 (append (nth 2 (assoc 'org reftex-cite-format-builtin))
2170 `((,key . ,(concat type ":%l")))))))
2172 ;; create all the link types and their completion functions
2173 (mapcar 'org-ref-define-citation-link org-ref-cite-types)
2176 *** org-ref-insert-cite-link
2177 We need a convenient method to insert links. In reftex you use the keystroke C-c ], which gives you a minibuffer to search the bibtex files from. This function is bound to that same keystroke here [[*org-mode%20/%20reftex%20setup][org-mode / reftex setup]]. This function will append to a cite link if you call it while on a link.
2179 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2180 (defun org-ref-insert-cite-link (alternative-cite)
2181 "Insert a default citation link using reftex. If you are on a link, it
2182 appends to the end of the link, otherwise, a new link is
2183 inserted. Use a prefix arg to get a menu of citation types."
2185 (org-ref-find-bibliography)
2186 (let* ((object (org-element-context))
2187 (link-string-beginning (org-element-property :begin object))
2188 (link-string-end (org-element-property :end object))
2189 (path (org-element-property :path object)))
2191 (if (not alternative-cite)
2194 ;; case where we are in a link
2195 ((and (equal (org-element-type object) 'link)
2196 (-contains? org-ref-cite-types (org-element-property :type object)))
2197 (goto-char link-string-end)
2198 ;; sometimes there are spaces at the end of the link
2199 ;; this code moves point pack until no spaces are there
2200 (while (looking-back " ") (backward-char))
2201 (insert (concat "," (mapconcat 'identity (reftex-citation t ?a) ","))))
2203 ;; We are next to a link, and we want to append
2206 (and (equal (org-element-type (org-element-context)) 'link)
2207 (-contains? org-ref-cite-types (org-element-property :type (org-element-context)))))
2208 (while (looking-back " ") (backward-char))
2209 (insert (concat "," (mapconcat 'identity (reftex-citation t ?a) ","))))
2211 ;; insert fresh link
2214 (concat org-ref-default-citation-link
2216 (mapconcat 'identity (reftex-citation t) ",")))))
2218 ;; you pressed a C-u so we run this code
2222 cite:zhou-2004-first-lda-u,paier-2006-errat,boes-2015-estim-bulk
2226 : org-ref-insert-cite-link
2228 *** Completion in cite links
2229 If you know the specific bibtex key, you may like to use completion directly. You use this with the org-mode machinery and tab completion. Here is the prototypical completion function. These are now all created when the links are created.
2231 #+BEGIN_SRC emacs-lisp :tangle no
2232 (defun org-cite-complete-link (&optional arg)
2233 "Completion function for cite links"
2235 org-ref-default-citation-link
2238 (let ((bibtex-files (org-ref-find-bibliography)))
2239 (bibtex-global-key-alist)))))
2242 Alternatively, you may shortcut the org-machinery with this command. You will be prompted for a citation type, and then offered key completion.
2244 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2245 (defun org-ref-insert-cite-with-completion (type)
2246 "Insert a cite link with completion"
2247 (interactive (list (ido-completing-read "Type: " org-ref-cite-types)))
2248 (insert (funcall (intern (format "org-%s-complete-link" type)))))
2251 ** Storing links to a bibtex entry
2252 org-mode already defines a store link function for bibtex entries. It does not store the link I want though, it only stores a brief citation of the entry. I want a citation link. Here is a function to do that.
2254 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2255 (defun org-ref-store-bibtex-entry-link ()
2256 "Save a citation link to the current bibtex entry. Saves in the default link type."
2258 (let ((link (concat org-ref-default-citation-link
2261 (bibtex-beginning-of-entry)
2262 (reftex-get-bib-field "=key=" (bibtex-parse-entry))))))
2263 (message "saved %s" link)
2264 (push (list link) org-stored-links)
2265 (car org-stored-links)))
2269 org-ref minimally supports index entries. To make an index in a file, you should put in the LaTeX header these lines
2272 #+LATEX_HEADER: \usepackage{makeidx}
2273 #+LATEX_HEADER: \makeindex
2276 Finally, put \makeindex at the end of the document where you want the index to appear. You will need to run the makeindex program at an appropriate point in your LaTeX to pdf, or use ox-manuscript, which will do it for you.
2279 Use index links to create entries (see http://en.wikibooks.org/wiki/LaTeX/Indexing). Clicking on an index link runs occur on the buffer for the entry. The link exports to LaTeX. Some links may need to be enclosed in double brackets if they have spaces in them.
2284 [[index:hello!Sam@\textsl{Sam}]]
2285 [[index:Lin@\textbf{Lin}]]
2286 [[index:Joe|textit]]
2287 [[index:Lin@\textbf{Lin}]]
2288 [[index:Peter|see {hello}]]
2289 [[index:Jen|seealso{Jenny}]]
2291 index:encodings!input!cp850
2293 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2299 (lambda (path desc format)
2302 (format "\\index{%s}" path)))))
2304 ;; this will generate a temporary index of entries in the file.
2308 (let ((*index-links* '())
2309 (*initial-letters* '()))
2312 (org-element-map (org-element-parse-buffer) 'link
2314 (let ((type (nth 0 link))
2315 (plist (nth 1 link)))
2317 (when (equal (plist-get plist ':type) "index")
2320 (cons (plist-get plist :path)
2322 "[[elisp:(progn (switch-to-buffer \"%s\") (goto-char %s))][%s]]"
2324 (plist-get plist :begin) ;; position of link
2325 ;; grab a description
2327 (goto-char (plist-get plist :begin))
2328 (if (thing-at-point 'sentence)
2330 (replace-regexp-in-string
2331 "\n" "" (thing-at-point 'sentence))
2332 ;; or call it a link
2336 (setq *index-links* (cl-sort *index-links* 'string-lessp :key 'car))
2338 ;; now first letters
2339 (dolist (link *index-links*)
2340 (add-to-list '*initial-letters* (substring (car link) 0 1) t))
2342 ;; now create the index
2343 (switch-to-buffer (get-buffer-create "*index*"))
2346 (insert "#+TITLE: Index\n\n")
2347 (dolist (letter *initial-letters*)
2348 (insert (format "* %s\n" (upcase letter)))
2349 ;; now process the links
2352 (string= letter (substring (car (car *index-links*)) 0 1)))
2353 (let ((link (pop *index-links*)))
2354 (insert (format "%s %s\n\n" (car link) (cdr link))))))
2355 (switch-to-buffer "*index*")))
2357 (lambda (path desc format)
2360 (format "\\printindex")))))
2364 | lambda | (path) | (let ((*index-links* (quote nil)) (*initial-letters* (quote nil))) (org-element-map (org-element-parse-buffer) (quote link) (lambda (link) (let ((type (nth 0 link)) (plist (nth 1 link))) (when (equal (plist-get plist (quote :type)) index) (add-to-list (quote *index-links*) (cons (plist-get plist :path) (format [[elisp:(progn (switch-to-buffer "%s") (goto-char %s))][%s]] (current-buffer) (plist-get plist :begin) (save-excursion (goto-char (plist-get plist :begin)) (if (thing-at-point (quote sentence)) (replace-regexp-in-string \n (thing-at-point (quote sentence))) link))))))))) (setq *index-links* (cl-sort *index-links* (quote string-lessp) :key (quote car))) (dolist (link *index-links*) (add-to-list (quote *initial-letters*) (substring (car link) 0 1) t)) (switch-to-buffer (get-buffer-create *index*)) (org-mode) (erase-buffer) (insert #+TITLE: Index\n\n) (dolist (letter *initial-letters*) (insert (format * %s\n (upcase letter))) (while (and *index-links* (string= letter (substring (car (car *index-links*)) 0 1))) (let ((link (pop *index-links*))) (insert (format %s %s\n\n (car link) (cdr link)))))) (switch-to-buffer *index*)) |
2365 | lambda | (path desc format) | (cond ((eq format (quote latex)) (format \printindex))) |
2368 org-ref provides some minimal support for a glossary. See http://en.wikibooks.org/wiki/LaTeX/Glossary for details. You need to put these lines in the header.
2370 #+LATEX_HEADER: \usepackage{glossaries}
2371 #+LATEX_HEADER: \makeglossaries
2373 And at the end of the document put \makeglossaries.
2375 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2378 nil ;; no follow action
2379 (lambda (path desc format)
2382 (format "\\newglossaryentry{%s}{%s}" path desc)))))
2388 nil ;; no follow action
2389 (lambda (path desc format)
2392 (format "\\gls{%s}" path)))))
2397 nil ;; no follow action
2398 (lambda (path desc format)
2401 (format "\\glspl{%s}" path)))))
2406 nil ;; no follow action
2407 (lambda (path desc format)
2410 (format "\\Gls{%s}" path)))))
2415 nil ;; no follow action
2416 (lambda (path desc format)
2419 (format "\\Glspl{%s}" path)))))
2423 ** create simple text citation from bibtex entry
2425 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2426 (defun org-ref-bib-citation ()
2427 "From a bibtex entry, create and return a simple citation string.
2428 This assumes you are in an article."
2430 (bibtex-beginning-of-entry)
2431 (let* ((cb (current-buffer))
2432 (bibtex-expand-strings t)
2433 (entry (loop for (key . value) in (bibtex-parse-entry t)
2434 collect (cons (downcase key) value)))
2435 (title (replace-regexp-in-string "\n\\|\t\\|\s+" " " (reftex-get-bib-field "title" entry)))
2436 (year (reftex-get-bib-field "year" entry))
2437 (author (replace-regexp-in-string "\n\\|\t\\|\s+" " " (reftex-get-bib-field "author" entry)))
2438 (key (reftex-get-bib-field "=key=" entry))
2439 (journal (reftex-get-bib-field "journal" entry))
2440 (volume (reftex-get-bib-field "volume" entry))
2441 (pages (reftex-get-bib-field "pages" entry))
2442 (doi (reftex-get-bib-field "doi" entry))
2443 (url (reftex-get-bib-field "url" entry))
2445 ;;authors, "title", Journal, vol(iss):pages (year).
2446 (format "%s, \"%s\", %s, %s:%s (%s)"
2447 author title journal volume pages year)))
2451 : org-ref-bib-citation
2454 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2455 (defun org-ref-bib-html-citation ()
2456 "from a bibtex entry, create and return a simple citation with html links."
2458 (bibtex-beginning-of-entry)
2459 (let* ((cb (current-buffer))
2460 (bibtex-expand-strings t)
2461 (entry (loop for (key . value) in (bibtex-parse-entry t)
2462 collect (cons (downcase key) value)))
2463 (title (replace-regexp-in-string "\n\\|\t\\|\s+" " " (reftex-get-bib-field "title" entry)))
2464 (year (reftex-get-bib-field "year" entry))
2465 (author (replace-regexp-in-string "\n\\|\t\\|\s+" " " (reftex-get-bib-field "author" entry)))
2466 (key (reftex-get-bib-field "=key=" entry))
2467 (journal (reftex-get-bib-field "journal" entry))
2468 (volume (reftex-get-bib-field "volume" entry))
2469 (pages (reftex-get-bib-field "pages" entry))
2470 (doi (reftex-get-bib-field "doi" entry))
2471 (url (reftex-get-bib-field "url" entry))
2473 ;;authors, "title", Journal, vol(iss):pages (year).
2474 (concat (format "%s, \"%s\", %s, %s:%s (%s)."
2475 author title journal volume pages year)
2476 (when url (format " <a href=\"%s\">link</a>" url))
2477 (when doi (format " <a href=\"http://dx.doi.org/%s\">doi</a>" doi)))
2481 ** open pdf from bibtex
2482 We bind this to a key here: [[*key%20bindings%20for%20utilities][key bindings for utilities]].
2483 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2484 (defun org-ref-open-bibtex-pdf ()
2485 "open pdf for a bibtex entry, if it exists. assumes point is in
2486 the entry of interest in the bibfile. but does not check that."
2489 (bibtex-beginning-of-entry)
2490 (let* ((bibtex-expand-strings t)
2491 (entry (bibtex-parse-entry t))
2492 (key (reftex-get-bib-field "=key=" entry))
2493 (pdf (format (concat org-ref-pdf-directory "%s.pdf") key)))
2495 (if (file-exists-p pdf)
2496 (org-open-link-from-string (format "[[file:%s]]" pdf))
2500 ** open notes from bibtex
2501 We bind this to a key here [[*key%20bindings%20for%20utilities][key bindings for utilities]].
2503 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2504 (defun org-ref-open-bibtex-notes ()
2505 "from a bibtex entry, open the notes if they exist, and create a heading if they do not.
2507 I never did figure out how to use reftex to make this happen
2508 non-interactively. the reftex-format-citation function did not
2509 work perfectly; there were carriage returns in the strings, and
2510 it did not put the key where it needed to be. so, below I replace
2511 the carriage returns and extra spaces with a single space and
2512 construct the heading by hand."
2515 (bibtex-beginning-of-entry)
2516 (let* ((cb (current-buffer))
2517 (bibtex-expand-strings t)
2518 (entry (loop for (key . value) in (bibtex-parse-entry t)
2519 collect (cons (downcase key) value)))
2520 (title (replace-regexp-in-string "\n\\|\t\\|\s+" " " (reftex-get-bib-field "title" entry)))
2521 (year (reftex-get-bib-field "year" entry))
2522 (author (replace-regexp-in-string "\n\\|\t\\|\s+" " " (reftex-get-bib-field "author" entry)))
2523 (key (reftex-get-bib-field "=key=" entry))
2524 (journal (reftex-get-bib-field "journal" entry))
2525 (volume (reftex-get-bib-field "volume" entry))
2526 (pages (reftex-get-bib-field "pages" entry))
2527 (doi (reftex-get-bib-field "doi" entry))
2528 (url (reftex-get-bib-field "url" entry))
2531 ;; save key to clipboard to make saving pdf later easier by pasting.
2534 (kill-ring-save (point-min) (point-max)))
2536 ;; now look for entry in the notes file
2537 (if org-ref-bibliography-notes
2538 (find-file-other-window org-ref-bibliography-notes)
2539 (error "org-ref-bib-bibliography-notes is not set to anything"))
2541 (goto-char (point-min))
2542 ;; put new entry in notes if we don't find it.
2543 (if (re-search-forward (format ":Custom_ID: %s$" key) nil 'end)
2544 (funcall org-ref-open-notes-function)
2545 ;; no entry found, so add one
2546 (insert (format "\n** TODO %s - %s" year title))
2558 [[cite:%s]] [[file:%s/%s.pdf][pdf]]\n\n"
2559 key author journal year volume pages doi url key org-ref-pdf-directory key))
2563 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2564 (defun org-ref-open-notes-from-reftex ()
2565 "Call reftex, and open notes for selected entry."
2567 (let ((bibtex-key )))
2569 ;; now look for entry in the notes file
2570 (if org-ref-bibliography-notes
2571 (find-file-other-window org-ref-bibliography-notes)
2572 (error "org-ref-bib-bibliography-notes is not set to anything"))
2574 (goto-char (point-min))
2576 (re-search-forward (format
2578 (first (reftex-citation t)) nil 'end))
2579 (funcall org-ref-open-notes-function))
2582 ** open url in browser from bibtex
2584 We bind this to a key here [[*key%20bindings%20for%20utilities][key bindings for utilities]].
2586 + This function may be duplicative of bibtex-url. But I think my function is better unless you do some complicated customization of bibtex-generate-url-list.
2588 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2589 (defun org-ref-open-in-browser ()
2590 "Open the bibtex entry at point in a browser using the url field or doi field"
2593 (bibtex-beginning-of-entry)
2595 (let ((url (bibtex-autokey-get-field "url")))
2600 (let ((doi (bibtex-autokey-get-field "doi")))
2602 (if (string-match "^http" doi)
2604 (browse-url (format "http://dx.doi.org/%s" doi)))
2606 (message "No url or doi found"))))
2610 I discovered you could upload a bibtex entry to citeulike using http requests. The upload is actually done by a [[*The%20upload%20script][python script]], because it was easy to write. Here is the emacs command to do this. It is not a fast operation, and do not use it frequently.
2612 *** function to upload bibtex to citeulike
2614 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2615 (defun org-ref-upload-bibtex-entry-to-citeulike ()
2616 "with point in a bibtex entry get bibtex string and submit to citeulike.
2618 Relies on the python script /upload_bibtex_citeulike.py being in the user directory."
2620 (message "uploading to citeulike")
2622 (bibtex-narrow-to-entry)
2623 (let ((startpos (point-min))
2624 (endpos (point-max))
2625 (bibtex-string (buffer-string))
2626 (script (concat "python " starter-kit-dir "/upload_bibtex_citeulike.py&")))
2627 (with-temp-buffer (insert bibtex-string)
2628 (shell-command-on-region (point-min) (point-max) script t nil nil t)))))
2631 *** The upload script
2632 Here is the python script for uploading.
2634 *************** TODO document how to get the cookies
2637 # :tangle upload_bibtex_citeulike.py
2640 import pickle, requests, sys
2643 with open('c:/Users/jkitchin/Dropbox/blogofile-jkitchin.github.com/_blog/cookies.pckl', 'rb') as f:
2644 cookies = pickle.load(f)
2646 url = 'http://www.citeulike.org/profile/jkitchin/import_do'
2648 bibtex = sys.stdin.read()
2650 data = {'pasted':bibtex,
2652 'tag_parsing':'simple',
2653 'strip_brackets':'no',
2654 'update_id':'bib-key',
2655 'btn_bibtex':'Import BibTeX file ...'}
2657 headers = {'content-type': 'multipart/form-data',
2658 'User-Agent':'jkitchin/johnrkitchin@gmail.com bibtexupload'}
2660 r = requests.post(url, headers=headers, data=data, cookies=cookies, files={})
2664 ** Build a pdf from a bibtex file
2665 It is useful to have a pdf version of an entire bibliography to check it for formatting, spelling, or to share it. This function creates a pdf from a bibtex file. I only include the packages I commonly use in my bitex files.
2667 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2668 (defun org-ref-build-full-bibliography ()
2669 "build pdf of all bibtex entries, and open it."
2671 (let* ((bibfile (file-name-nondirectory (buffer-file-name)))
2672 (bib-base (file-name-sans-extension bibfile))
2673 (texfile (concat bib-base ".tex"))
2674 (pdffile (concat bib-base ".pdf")))
2677 (insert (format "\\documentclass[12pt]{article}
2678 \\usepackage[version=3]{mhchem}
2680 \\usepackage[numbers]{natbib}
2681 \\usepackage[colorlinks=true, linkcolor=blue, urlcolor=blue, pdfstartview=FitH]{hyperref}
2685 \\bibliographystyle{unsrtnat}
2687 \\end{document}" bib-base))
2689 (shell-command (concat "pdflatex " bib-base))
2690 (shell-command (concat "bibtex " bib-base))
2691 (shell-command (concat "pdflatex " bib-base))
2692 (shell-command (concat "pdflatex " bib-base))
2693 (kill-buffer texfile)
2694 (org-open-file pdffile)
2698 ** Extract bibtex entries cited in an org-file
2699 When you use your default bibliography file, and you want to send an org-file to a collaborator, you may need to include bibtex entries so the other person can see them. This function does that and puts the entries in a section at the end of the document that can be tangled to a bib-file.
2701 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2702 (defun org-ref-extract-bibtex-entries ()
2703 "extract the bibtex entries referred to by cite links in the current buffer into a src block at the bottom of the current buffer.
2705 If no bibliography is in the buffer the `reftex-default-bibliography' is used."
2707 (let* ((temporary-file-directory (file-name-directory (buffer-file-name)))
2708 (tempname (make-temp-file "extract-bib"))
2709 (contents (buffer-string))
2710 (cb (current-buffer))
2711 basename texfile bibfile results)
2713 ;; open tempfile and insert org-buffer contents
2714 (find-file tempname)
2716 (setq basename (file-name-sans-extension
2717 (file-name-nondirectory buffer-file-name))
2718 texfile (concat tempname ".tex")
2719 bibfile (concat tempname ".bib"))
2721 ;; see if we have a bibliography, and insert the default one if not.
2723 (goto-char (point-min))
2724 (unless (re-search-forward "^bibliography:" (point-max) 'end)
2725 (insert (format "\nbibliography:%s"
2726 (mapconcat 'identity reftex-default-bibliography ",")))))
2729 ;; get a latex file and extract the references
2730 (org-latex-export-to-latex)
2733 (reftex-create-bibtex-file bibfile)
2735 ;; save results of the references
2736 (setq results (buffer-string))
2738 ;; kill buffers. these are named by basename, not full path
2739 (kill-buffer (concat basename ".bib"))
2740 (kill-buffer (concat basename ".tex"))
2741 (kill-buffer basename)
2743 (delete-file bibfile)
2744 (delete-file texfile)
2745 (delete-file tempname)
2747 ;; Now back to the original org buffer and insert the results
2748 (switch-to-buffer cb)
2749 (when (not (string= "" results))
2751 (goto-char (point-max))
2753 (org-insert-heading)
2754 (insert (format " Bibtex entries
2756 ,#+BEGIN_SRC text :tangle %s
2758 ,#+END_SRC" (concat (file-name-sans-extension (file-name-nondirectory (buffer-file-name))) ".bib") results))))))
2761 ** Find bad cite links
2763 :ID: 8515E800-EDA0-4B2A-85FD-55B6FF849203
2765 Depending on how you enter citations, you may have citations with no corresponding bibtex entry. This function finds them and gives you a clickable table to navigate to them.
2767 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2770 (defun index (substring list)
2771 "return the index of string in a list of strings"
2774 (dolist (arg list i)
2775 (if (string-match (concat "^" substring "$") arg)
2780 ;; return counter if found, otherwise return nil
2784 (defun org-ref-find-bad-citations ()
2785 "Create a list of citation keys in an org-file that do not have a bibtex entry in the known bibtex files.
2787 Makes a new buffer with clickable links."
2789 ;; generate the list of bibtex-keys and cited keys
2790 (let* ((bibtex-files (org-ref-find-bibliography))
2791 (bibtex-file-path (mapconcat (lambda (x) (file-name-directory (file-truename x))) bibtex-files ":"))
2792 (bibtex-keys (mapcar (lambda (x) (car x)) (bibtex-global-key-alist)))
2793 (bad-citations '()))
2795 (org-element-map (org-element-parse-buffer) 'link
2797 (let ((plist (nth 1 link)))
2798 (when (-contains? org-ref-cite-types (plist-get plist :type))
2799 (dolist (key (org-ref-split-and-strip-string (plist-get plist :path)))
2800 (when (not (index key bibtex-keys))
2801 (message-box "%s" link)
2806 `(,(format "%s [[elisp:(progn (switch-to-buffer-other-frame \"%s\")(goto-char %s))][not found here]]\n"
2809 (plist-get plist :begin)))))
2811 ;; set with-affilates to t to get citations in a caption
2816 (switch-to-buffer-other-window "*Missing citations*")
2819 (insert "* List of bad cite links\n")
2820 (insert (mapconcat 'identity bad-citations ""))
2821 ;(setq buffer-read-only t)
2822 (use-local-map (copy-keymap org-mode-map))
2823 (local-set-key "q" #'(lambda () (interactive) (kill-buffer))))
2825 (when (get-buffer "*Missing citations*")
2826 (kill-buffer "*Missing citations*"))
2827 (message "No bad cite links found"))))
2830 ** helm interface to org-ref
2831 In [[id:8515E800-EDA0-4B2A-85FD-55B6FF849203][Find bad cite links]] we wrote a function that finds bad links and creates a buffer of links to them.
2833 Here we develop a similar idea, but instead of an org-buffer with links, we create helm sources for bad cite links, bad ref links, and multiple labels.
2835 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2836 (defun org-ref-bad-cite-candidates ()
2837 "Returns a list of conses (key . marker) where key does not exist in the known bibliography files, and marker points to the key."
2838 (let* ((cp (point)) ; save to return to later
2839 (bibtex-files (org-ref-find-bibliography))
2840 (bibtex-file-path (mapconcat
2842 (file-name-directory (file-truename x)))
2844 (bibtex-keys (mapcar (lambda (x) (car x))
2845 (bibtex-global-key-alist)))
2846 (bad-citations '()))
2848 (org-element-map (org-element-parse-buffer) 'link
2850 (let ((plist (nth 1 link)))
2851 (when (-contains? org-ref-cite-types (plist-get plist :type))
2852 (dolist (key (org-ref-split-and-strip-string (plist-get plist :path)) )
2853 (when (not (index key bibtex-keys))
2854 (goto-char (plist-get plist :begin))
2855 (re-search-forward key)
2856 (push (cons key (point-marker)) bad-citations)))
2858 ;; add with-affiliates to get cites in caption
2864 (defun org-ref-bad-ref-candidates ()
2865 "Returns a list of conses (ref . marker) where ref is a ref link that does not point to anything (i.e. a label)."
2866 ;; first get a list of legitimate labels
2868 (labels (org-ref-get-labels))
2870 ;; now loop over ref links
2871 (goto-char (point-min))
2872 (org-element-map (org-element-parse-buffer) 'link
2874 (let ((plist (nth 1 link)))
2875 (when (or (equal (plist-get plist ':type) "ref")
2876 (equal (plist-get plist ':type) "eqref")
2877 (equal (plist-get plist ':type) "pageref")
2878 (equal (plist-get plist ':type) "nameref"))
2879 (unless (-contains? labels (plist-get plist :path))
2880 (goto-char (plist-get plist :begin))
2883 (cons (plist-get plist :path)
2884 (point-marker))))))))
2889 (defun org-ref-bad-label-candidates ()
2890 "Return a list of labels where label is multiply defined."
2891 (let ((labels (org-ref-get-labels))
2892 (multiple-labels '()))
2893 (when (not (= (length labels)
2894 (length (-uniq labels))))
2895 (dolist (label labels)
2896 (when (> (-count (lambda (a)
2899 ;; this is a multiply defined label.
2901 (goto-char (point-min))
2902 (while (re-search-forward
2903 (format "[^#+]label:%s\\s-" label) nil t)
2904 (push (cons label (point-marker)) multiple-labels))
2906 (goto-char (point-min))
2907 (while (re-search-forward
2908 (format "\\label{%s}\\s-?" label) nil t)
2909 (push (cons label (point-marker)) multiple-labels))
2911 (goto-char (point-min))
2912 (while (re-search-forward
2913 (format "^#\\+label:\\s-*%s" label) nil t)
2914 (push (cons label (point-marker)) multiple-labels))
2916 (goto-char (point-min))
2917 (while (re-search-forward
2918 (format "^#\\+tblname:\\s-*%s" label) nil t)
2919 (push (cons label (point-marker)) multiple-labels))
2925 : org-ref-bad-label-candidates
2927 Now, we have a functions for candidates, we can make helm sources for each one, and then run a helm command to view them.
2929 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2931 "Opens a helm interface to actions for org-ref.
2932 Shows bad citations, ref links and labels"
2934 (let ((cb (current-buffer))
2935 (bad-citations (org-ref-bad-cite-candidates))
2936 (bad-refs (org-ref-bad-ref-candidates))
2937 (bad-labels (org-ref-bad-label-candidates)))
2939 (helm :sources `(((name . "Bad citations")
2940 (candidates . ,bad-citations)
2941 (action . (lambda (marker)
2942 (switch-to-buffer (marker-buffer marker))
2943 (goto-char marker))))
2945 ((name . "Bad Labels")
2946 (candidates . ,bad-labels)
2947 (action . (lambda (marker)
2948 (switch-to-buffer (marker-buffer marker))
2949 (goto-char marker))))
2951 ((name . "Bad ref links")
2952 (candidates . ,bad-refs)
2953 (action . (lambda (marker)
2954 (switch-to-buffer (marker-buffer marker))
2955 (goto-char marker))))
2957 ((name . "Utilities")
2958 (candidates . (("Check buffer again" . org-ref)
2959 ("Insert citation" . helm-bibtex)
2960 ("Insert label link" . org-ref-helm-insert-label-link)
2961 ("Insert ref link" . org-ref-helm-insert-ref-link)
2962 ("List of figures" . org-ref-list-of-figures)
2963 ("List of tables" . org-ref-list-of-tables)
2964 ("Table of contents" . nil)
2966 (action . (lambda (x)
2967 (switch-to-buffer ,cb)
2970 ((name . "Export functions")
2971 (candidates . (("Extract cited entries" . org-ref-extract-bibtex-entries)
2972 ("Export to html and open" . (lambda () (org-open-file (org-html-export-to-html))))
2973 ("Export to pdf and open" . (lambda ()
2974 (org-open-file (org-latex-export-to-pdf))))
2975 ("Export to manuscript pdf and open" . ox-manuscript-export-and-build-and-open)
2976 ("Export submission manuscript pdf and open" . ox-manuscript-build-submission-manuscript-and-open)
2979 (action . (lambda (x)
2980 (switch-to-buffer ,cb)
2986 ** Finding non-ascii characters
2987 I like my bibtex files to be 100% ascii. This function finds the non-ascii characters so you can replace them.
2989 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
2990 (defun org-ref-find-non-ascii-characters ()
2991 "finds non-ascii characters in the buffer. Useful for cleaning up bibtex files"
2993 (occur "[^[:ascii:]]"))
2996 ** Resort a bibtex entry
2997 I like neat and orderly bibtex entries.That means the fields are in a standard order that I like. This function reorders the fields in an entry for articles, and makes sure the fields are in lowercase.
2999 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
3000 (defun org-ref-sort-bibtex-entry ()
3001 "sort fields of entry in standard order and downcase them"
3003 (bibtex-beginning-of-entry)
3004 (let* ((master '("author" "title" "journal" "volume" "number" "pages" "year" "doi" "url"))
3005 (entry (bibtex-parse-entry))
3008 (type (cdr (assoc "=type=" entry)))
3009 (key (cdr (assoc "=key=" entry))))
3011 ;; these are the fields we want to order that are in this entry
3012 (setq entry-fields (mapcar (lambda (x) (car x)) entry))
3013 ;; we do not want to reenter these fields
3014 (setq entry-fields (remove "=key=" entry-fields))
3015 (setq entry-fields (remove "=type=" entry-fields))
3017 ;;these are the other fields in the entry
3018 (setq other-fields (remove-if-not (lambda(x) (not (member x master))) entry-fields))
3021 ;; right now we only resort articles
3022 ((string= (downcase type) "article")
3025 (concat "@article{" key ",\n"
3028 (when (member field entry-fields)
3029 (format "%s = %s," (downcase field) (cdr (assoc field entry))))) master "\n")
3032 (format "%s = %s," (downcase field) (cdr (assoc field entry)))) other-fields "\n")
3034 (bibtex-find-entry key)
3036 (bibtex-clean-entry)
3040 ** Clean a bibtex entry
3041 I like neat and orderly bibtex entries. This code will eventually replace the key with my style key, clean the entry, and sort the fields in the order I like them.
3042 see [[file:emacs-24.3/lisp/textmodes/bibtex.el::bibtex-autokey-before-presentation-function]] for how to set a function that checks for uniqueness of the key.
3043 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
3044 (defun org-ref-clean-bibtex-entry(&optional keep-key)
3045 "clean and replace the key in a bibtex function. When keep-key is t, do not replace it. You can use a prefix to specify the key should be kept"
3047 (bibtex-beginning-of-entry)
3049 ;; some entries do not have a key or comma in first line. We check and add it, if needed.
3050 (unless (string-match ",$" (thing-at-point 'line))
3054 ;; check for empty pages, and put eid or article id in its place
3055 (let ((entry (bibtex-parse-entry))
3056 (pages (bibtex-autokey-get-field "pages"))
3057 (year (bibtex-autokey-get-field "year"))
3058 (doi (bibtex-autokey-get-field "doi"))
3059 ;; The Journal of Chemical Physics uses eid
3060 (eid (bibtex-autokey-get-field "eid")))
3062 ;; replace http://dx.doi.org/ in doi. some journals put that in,
3063 ;; but we only want the doi.
3064 (when (string-match "^http://dx.doi.org/" doi)
3065 (bibtex-beginning-of-entry)
3066 (goto-char (car (cdr (bibtex-search-forward-field "doi" t))))
3068 (bibtex-make-field "doi")
3070 (insert (replace-regexp-in-string "^http://dx.doi.org/" "" doi)))
3072 ;; asap articles often set year to 0, which messes up key
3073 ;; generation. fix that.
3074 (when (string= "0" year)
3075 (bibtex-beginning-of-entry)
3076 (goto-char (car (cdr (bibtex-search-forward-field "year" t))))
3078 (bibtex-make-field "year")
3080 (insert (read-string "Enter year: ")))
3082 ;; fix pages if they are empty if there is an eid to put there.
3083 (when (string= "-" pages)
3085 (bibtex-beginning-of-entry)
3086 ;; this seems like a clunky way to set the pages field.But I
3087 ;; cannot find a better way.
3088 (goto-char (car (cdr (bibtex-search-forward-field "pages" t))))
3090 (bibtex-make-field "pages")
3094 ;; replace naked & with \&
3096 (bibtex-narrow-to-entry)
3097 (bibtex-beginning-of-entry)
3098 (message "checking &")
3099 (replace-regexp " & " " \\\\& ")
3102 ;; generate a key, and if it duplicates an existing key, edit it.
3104 (let ((key (bibtex-generate-autokey)))
3106 ;; first we delete the existing key
3107 (bibtex-beginning-of-entry)
3108 (re-search-forward bibtex-entry-maybe-empty-head)
3109 (if (match-beginning bibtex-key-in-head)
3110 (delete-region (match-beginning bibtex-key-in-head)
3111 (match-end bibtex-key-in-head)))
3112 ;; check if the key is in the buffer
3113 (when (save-excursion
3114 (bibtex-search-entry key))
3116 (bibtex-search-entry key)
3117 (bibtex-copy-entry-as-kill)
3118 (switch-to-buffer-other-window "*duplicate entry*")
3120 (setq key (bibtex-read-key "Duplicate Key found, edit: " key)))
3123 (kill-new key))) ;; save key for pasting
3125 ;; run hooks. each of these operates on the entry with no arguments.
3126 ;; this did not work like i thought, it gives a symbolp error.
3127 ;; (run-hooks org-ref-clean-bibtex-entry-hook)
3132 org-ref-clean-bibtex-entry-hook)
3134 ;; sort fields within entry
3135 (org-ref-sort-bibtex-entry)
3136 ;; check for non-ascii characters
3137 (occur "[^[:ascii:]]")
3142 : org-ref-clean-bibtex-entry
3144 ** Sort the entries in a citation link by year
3145 I prefer citations in chronological order within a grouping. These functions sort the link under the cursor by year.
3147 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
3148 (defun org-ref-get-citation-year (key)
3149 "get the year of an entry with key. Returns year as a string."
3151 (let* ((results (org-ref-get-bibtex-key-and-file key))
3152 (bibfile (cdr results)))
3154 (insert-file-contents bibfile)
3155 (bibtex-search-entry key nil 0)
3156 (prog1 (reftex-get-bib-field "year" (bibtex-parse-entry t))
3159 (defun org-ref-sort-citation-link ()
3160 "replace link at point with sorted link by year"
3162 (let* ((object (org-element-context))
3163 (type (org-element-property :type object))
3164 (begin (org-element-property :begin object))
3165 (end (org-element-property :end object))
3166 (link-string (org-element-property :path object))
3168 (setq keys (org-ref-split-and-strip-string link-string))
3169 (setq years (mapcar 'org-ref-get-citation-year keys))
3170 (setq data (mapcar* (lambda (a b) `(,a . ,b)) years keys))
3171 (setq data (cl-sort data (lambda (x y) (< (string-to-int (car x)) (string-to-int (car y))))))
3172 ;; now get the keys separated by commas
3173 (setq keys (mapconcat (lambda (x) (cdr x)) data ","))
3174 ;; and replace the link with the sorted keys
3175 (cl--set-buffer-substring begin end (concat type ":" keys))))
3178 ** Sort entries in citation links with shift-arrow keys
3179 Sometimes it may be helpful to manually change the order of citations. These functions define shift-arrow functions.
3180 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
3181 (defun org-ref-swap-keys (i j keys)
3182 "swap the keys in a list with index i and j"
3183 (let ((tempi (nth i keys)))
3184 (setf (nth i keys) (nth j keys))
3185 (setf (nth j keys) tempi))
3188 (defun org-ref-swap-citation-link (direction)
3189 "move citation at point in direction +1 is to the right, -1 to the left"
3191 (let* ((object (org-element-context))
3192 (type (org-element-property :type object))
3193 (begin (org-element-property :begin object))
3194 (end (org-element-property :end object))
3195 (link-string (org-element-property :path object))
3197 ;; We only want this to work on citation links
3198 (when (-contains? org-ref-cite-types type)
3199 (setq key (org-ref-get-bibtex-key-under-cursor))
3200 (setq keys (org-ref-split-and-strip-string link-string))
3201 (setq i (index key keys)) ;; defined in org-ref
3202 (if (> direction 0) ;; shift right
3203 (org-ref-swap-keys i (+ i 1) keys)
3204 (org-ref-swap-keys i (- i 1) keys))
3205 (setq keys (mapconcat 'identity keys ","))
3206 ;; and replace the link with the sorted keys
3207 (cl--set-buffer-substring begin end (concat type ":" keys " "))
3208 ;; now go forward to key so we can move with the key
3209 (re-search-forward key)
3210 (goto-char (match-beginning 0)))))
3212 ;; add hooks to make it work
3213 (add-hook 'org-shiftright-hook (lambda () (org-ref-swap-citation-link 1)))
3214 (add-hook 'org-shiftleft-hook (lambda () (org-ref-swap-citation-link -1)))
3217 ** Lightweight messages about links
3218 To get a lighter weight message about the label, ref and cite links, we define a function that gives us the minibuffer message, without the menu. We run this in an idle timer.
3220 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
3221 (defun org-ref-get-label-context (label)
3222 "Return a string of context around a label."
3225 (goto-char (point-min))
3226 (when (re-search-forward
3227 (format "label:%s\\b" label) nil t)
3228 (throw 'result (buffer-substring
3237 (goto-char (point-min))
3238 (when (re-search-forward
3239 (format "\\label{%s}" label) nil t)
3240 (throw 'result (buffer-substring
3249 (goto-char (point-min))
3250 (when (re-search-forward
3251 (format "^#\\+label:\\s-*\\(%s\\)\\b" label) nil t)
3252 (throw 'result (buffer-substring
3261 (goto-char (point-min))
3262 (when (re-search-forward
3263 (format "^#\\+tblname:\\s-*\\(%s\\)\\b" label) nil t)
3264 (throw 'result (buffer-substring
3272 (throw 'result "!!! NO CONTEXT FOUND !!!"))))
3275 (defun org-ref-link-message ()
3276 "Print a minibuffer message about the link that point is on."
3278 (when (eq major-mode 'org-mode)
3279 (let* ((object (org-element-context))
3280 (type (org-element-property :type object)))
3284 ((-contains? org-ref-cite-types type)
3285 (message (org-ref-get-citation-string-at-point)))
3287 ;; message some context about the label we are referring to
3288 ((string= type "ref")
3289 (message "%scount: %s"
3290 (org-ref-get-label-context
3291 (org-element-property :path object))
3292 (org-ref-count-labels
3293 (org-element-property :path object))))
3295 ((string= type "eqref")
3296 (message "%scount: %s"
3297 (org-ref-get-label-context
3298 (org-element-property :path object))
3299 (org-ref-count-labels
3300 (org-element-property :path object))))
3302 ;; message the count
3303 ((string= type "label")
3304 (let ((count (org-ref-count-labels
3305 (org-element-property :path object))))
3306 ;; get plurality on occurrence correct
3308 (number-to-string count)
3310 (when (or (= count 0)
3314 ((string= type "custom-id")
3316 (org-open-link-from-string
3317 (format "[[#%s]]" (org-element-property :path object)))
3318 (message "%s" (org-get-heading))))
3320 ;; check if the bibliography files exist.
3321 ((string= type "bibliography")
3323 ;; object is the link you clicked on
3324 (object (org-element-context))
3325 (link-string (org-element-property :path object))
3326 (link-string-beginning)
3329 (goto-char (org-element-property :begin object))
3330 (search-forward link-string nil nil 1)
3331 (setq link-string-beginning (match-beginning 0))
3332 (setq link-string-end (match-end 0)))
3334 ;; make sure we are in link and not before the :
3335 (when (> link-string-beginning (point))
3336 (goto-char link-string-beginning))
3338 ;; now if we have comma separated bibliographies
3339 ;; we find the one clicked on. we want to
3340 ;; search forward to next comma from point
3342 (if (search-forward "," link-string-end 1 1)
3343 (setq key-end (- (match-end 0) 1)) ; we found a match
3344 (setq key-end (point)))) ; no comma found so take the point
3346 ;; and backward to previous comma from point
3348 (if (search-backward "," link-string-beginning 1 1)
3349 (setq key-beginning (+ (match-beginning 0) 1)) ; we found a match
3350 (setq key-beginning (point)))) ; no match found
3351 ;; save the key we clicked on.
3353 (org-ref-strip-string
3354 (buffer-substring key-beginning key-end)))
3355 (if (file-exists-p bibfile)
3356 (message "%s exists." bibfile)
3357 (message "!!! %s NOT FOUND !!!" bibfile))))
3362 I like convenience. Here are some aliases for faster typing.
3364 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
3365 (defalias 'oro 'org-ref-open-citation-at-point)
3366 (defalias 'orc 'org-ref-citation-at-point)
3367 (defalias 'orp 'org-ref-open-pdf-at-point)
3368 (defalias 'oru 'org-ref-open-url-at-point)
3369 (defalias 'orn 'org-ref-open-notes-at-point)
3370 (defalias 'ornr 'org-ref-open-notes-from-reftex)
3372 (defalias 'orib 'org-ref-insert-bibliography-link)
3373 (defalias 'oric 'org-ref-insert-cite-link)
3374 (defalias 'orir 'org-ref-insert-ref-link)
3375 (defalias 'orsl 'org-ref-store-bibtex-entry-link)
3377 (defalias 'orcb 'org-ref-clean-bibtex-entry)
3380 [[https://github.com/tmalsburg/helm-bibtex][helm-bibtex]] is a very cool interface to bibtex files. Out of the box though, it is not super convenient for org-ref. Here, we modify it to make it fit our workflow and extend it where needed.
3382 1. Make the default action to insert selected keys.
3383 2. Make open entry second action
3384 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
3385 (setq helm-source-bibtex
3386 '((name . "BibTeX entries")
3387 (init . helm-bibtex-init)
3388 (candidates . helm-bibtex-candidates)
3389 (filtered-candidate-transformer . helm-bibtex-candidates-formatter)
3390 (action . (("Insert citation" . helm-bibtex-insert-citation)
3391 ("Show entry" . helm-bibtex-show-entry)
3392 ("Open PDF file (if present)" . helm-bibtex-open-pdf)
3393 ("Open URL or DOI in browser" . helm-bibtex-open-url-or-doi)
3394 ("Insert reference" . helm-bibtex-insert-reference)
3395 ("Insert BibTeX key" . helm-bibtex-insert-key)
3396 ("Insert BibTeX entry" . helm-bibtex-insert-bibtex)
3397 ("Attach PDF to email" . helm-bibtex-add-PDF-attachment)
3398 ("Edit notes" . helm-bibtex-edit-notes)
3402 Now, let us define a function that inserts the cite links:
3403 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
3404 (defun helm-bibtex-format-org-ref (keys)
3405 "Insert selected KEYS as cite link. Append KEYS if you are on a link.
3406 Technically, this function should return a string that is inserted by helm. This function does the insertion and gives helm an empty string to insert. This lets us handle appending to a link properly.
3408 In the helm-bibtex buffer, C-u will give you a helm menu to select a new link type for the selected entries.
3410 C-u C-u will change the key at point to the selected keys.
3412 (let* ((object (org-element-context))
3413 (last-char (save-excursion
3414 (goto-char (org-element-property :end object))
3416 (if (looking-at " ")
3420 ;; case where we are in a link
3421 ((and (equal (org-element-type object) 'link)
3424 (org-element-property :type object)))
3426 ;; no prefix. append keys
3427 ((equal helm-current-prefix-arg nil)
3428 (goto-char (org-element-property :end object))
3429 (while (looking-back " ") (backward-char))
3430 (insert (concat "," (mapconcat 'identity keys ","))))
3431 ;; double prefix, replace key at point
3432 ((equal helm-current-prefix-arg '(16))
3433 (setf (buffer-substring
3434 (org-element-property :begin object)
3435 (org-element-property :end object))
3437 (replace-regexp-in-string
3438 (car (org-ref-get-bibtex-key-and-file)) ; key
3439 (mapconcat 'identity keys ",") ; new keys
3440 (org-element-property :raw-link object))
3441 ;; replace space at end to avoid collapsing into next word.
3443 ;; and we want to go to the end of the new link
3445 (org-element-property :end (org-element-context))))
3447 (message "Not found"))))
3449 ;; We are next to a link, and we want to append
3450 ;; next to a link means one character back is on a link.
3453 (and (equal (org-element-type (org-element-context)) 'link)
3456 (org-element-property :type (org-element-context)))))
3457 (while (looking-back " ") (backward-char))
3458 (insert (concat "," (mapconcat 'identity keys ","))))
3460 ;; insert fresh link
3462 ;;(message-box "fresh link")
3464 (concat (if (equal helm-current-prefix-arg '(4))
3465 (helm :sources `((name . "link types")
3466 (candidates . ,org-ref-cite-types)
3467 (action . (lambda (x) x))))
3468 org-ref-default-citation-link)
3470 (s-join "," keys))))))
3471 ;; return empty string for helm
3474 (setq helm-bibtex-format-citation-functions
3475 '((org-mode . helm-bibtex-format-org-ref)))
3477 (defun org-ref-helm-insert-cite-link (arg)
3478 "org-ref function to use helm-bibtex to insert a citation link.
3479 With one prefix arg, insert a ref link.
3480 With two prefix args, insert a label link."
3484 (let ((helm-bibtex-bibliography (org-ref-find-bibliography)))
3487 (org-ref-helm-insert-ref-link))
3489 (org-ref-helm-insert-label-link))))
3491 (require 'helm-bibtex)
3493 ;; add our own fallback entries where we want them. These appear in reverse order of adding in the menu
3494 (setq helm-bibtex-fallback-options
3495 (-insert-at 1 '("Crossref" . "http://search.crossref.org/?q=%s") helm-bibtex-fallback-options))
3497 (setq helm-bibtex-fallback-options
3500 '("Scopus" . "http://www.scopus.com/scopus/search/submit/xadvanced.url?searchfield=TITLE-ABS-KEY(%s)")
3501 helm-bibtex-fallback-options))
3503 (setq helm-bibtex-fallback-options
3504 (-insert-at 1 '("WOS" . "http://gateway.webofknowledge.com/gateway/Gateway.cgi?topic=%s&GWVersion=2&SrcApp=WEB&SrcAuth=HSB&DestApp=UA&DestLinkType=GeneralSearchSummary") helm-bibtex-fallback-options))
3507 ** A helm click menu
3508 This code provides a helm interface to things you can do when you click on a citation link. This is an alternative to the minibuffer menu.
3509 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
3510 (defun org-ref-get-citation-string-at-point ()
3511 "Get a string of a formatted citation"
3513 (let* ((results (org-ref-get-bibtex-key-and-file))
3515 (bibfile (cdr results)))
3519 (insert-file-contents bibfile)
3520 (bibtex-search-entry key)
3521 (org-ref-bib-citation)))
3522 "!!! No entry found !!!" )))
3524 (defun org-ref-cite-candidates ()
3525 "Generate the list of possible candidates for click actions on a cite link.
3526 Checks for pdf and doi, and add appropriate functions."
3528 (let* ((results (org-ref-get-bibtex-key-and-file))
3530 (pdf-file (format (concat org-ref-pdf-directory "%s.pdf") key))
3531 (bibfile (cdr results))
3532 (url (save-excursion
3534 (insert-file-contents bibfile)
3535 (bibtex-search-entry key)
3536 (bibtex-autokey-get-field "url"))))
3537 (doi (save-excursion
3539 (insert-file-contents bibfile)
3540 (bibtex-search-entry key)
3541 ;; I like this better than bibtex-url which does not always find
3543 (bibtex-autokey-get-field "doi"))))
3544 (candidates `(("Quit" . org-ref-citation-at-point)
3545 ("Open bibtex entry" . org-ref-open-citation-at-point))))
3546 ;; for some reason, when there is no doi or url, they are returned as "". I
3547 ;; prefer nil so we correct this here.
3548 (when (string= doi "") (setq doi nil))
3549 (when (string= url "") (setq url nil))
3551 ;; Conditional pdf functions
3552 (if (file-exists-p pdf-file)
3555 '("Open pdf" . org-ref-open-pdf-at-point)
3559 '("Try to get pdf" . (lambda ()
3560 (save-window-excursion
3561 (org-ref-open-citation-at-point)
3562 (bibtex-beginning-of-entry)
3563 (doi-utils-get-bibtex-entry-pdf))))
3569 '("Open notes" . org-ref-open-notes-at-point)
3572 ;; conditional url and doi functions
3576 '("Open in browser" . org-ref-open-url-at-point)
3581 (add-to-list 'candidates x t))
3582 `(("WOS" . org-ref-wos-at-point)
3583 ("Related articles in WOS" . org-ref-wos-related-at-point)
3584 ("Citing articles in WOS" . org-ref-wos-citing-at-point)
3585 ("Google Scholar" . org-ref-google-scholar-at-point)
3586 ("Pubmed" . org-ref-pubmed-at-point)
3587 ("Crossref" . org-ref-crossref-at-point)
3592 '("Copy formatted citation to clipboard" . org-ref-copy-entry-as-summary)
3597 '("Copy key to clipboard" . (lambda ()
3599 (car (org-ref-get-bibtex-key-and-file)))))
3604 '("Copy bibtex entry to file" . org-ref-copy-entry-at-point-to-file)
3609 '("Email bibtex entry and pdf" . (lambda ()
3611 (org-ref-open-citation-at-point)
3612 (email-bibtex-entry))))
3614 ;; finally return a numbered list of the candidates
3616 for cell in candidates
3617 collect (cons (format "%2s. %s" i (car cell))
3621 (defvar org-ref-helm-user-candidates '()
3622 "List of user-defined candidates to act when clicking on a cite link.
3623 This is a list of cons cells '((\"description\" . action)). The action function should not take an argument, and should assume point is on the cite key of interest.
3626 ;; example of adding your own function
3628 'org-ref-helm-user-candidates
3629 '("Example" . (lambda () (message-box "You did it!")))
3632 (defun org-ref-cite-click-helm (key)
3634 1. get name and candidates before entering helm because we need the org-buffer.
3635 2. switch back to the org buffer before evaluating the action. most of them need the point and buffer."
3637 (let ((name (org-ref-get-citation-string-at-point))
3638 (candidates (org-ref-cite-candidates))
3639 (cb (current-buffer)))
3641 (helm :sources `(((name . ,name)
3642 (candidates . ,candidates)
3643 (action . (lambda (f)
3644 (switch-to-buffer cb)
3646 ((name . "User functions")
3647 (candidates . ,org-ref-helm-user-candidates)
3648 (action . (lambda (f)
3649 (switch-to-buffer cb)
3655 : org-ref-cite-click-helm
3658 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
3663 This code will tangle the elisp code out to org-ref.el and load it.
3665 [[elisp:(progn (org-babel-tangle) (load-file "org-ref.el"))]]
3667 Alternatively you may use:
3669 [[elisp:(org-babel-load-file "org-ref.org")]]