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;;; biblio-dissemin.el --- Lookup bibliographic information and open access records from Dissemin -*- lexical-binding: t -*-
;; Copyright (C) 2016 Clément Pit-Claudel
;; Author: Clément Pit-Claudel <clement.pitclaudel@live.com>
;; URL: http://github.com/cpitclaudel/biblio.el
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; Lookup publication records on Dissemin by DOI using `dissemin-lookup'.
;;
;; This package also plugs into `biblio-selection-mode' by adding an entry to
;; the extended actions menu (`x') to quickly locate the Dissemin record of
;; e.g. a CrossRef entry.
;;; Code:
(require 'biblio-core)
(defun biblio-dissemin--format-author (author)
"Format a Dissemin AUTHOR entry."
(let-alist author
(format "%s %s" .name.first .name.last)))
(defun biblio-dissemin--insert-button (url prefix)
"Insert a button pointing to URL, prefixed by PREFIX."
(unless (seq-empty-p url)
(insert "\n" prefix)
(insert (biblio-make-url-button url))))
(defun biblio-dissemin--insert-record (record)
"Insert a Dissemin RECORD entry into the current buffer."
(let-alist record
(insert "\n\n")
(biblio-with-fontification 'font-lock-preprocessor-face
(biblio-insert-with-prefix ">> " .identifier))
(biblio-dissemin--insert-button .pdf_url " ")
(unless (string= .pdf_url .splash_url)
(biblio-dissemin--insert-button .splash_url " "))
(unless (seq-empty-p .abstract)
(insert "\n")
;; (biblio-with-fontification 'font-lock-doc-face
(biblio-insert-with-prefix " " .abstract))))
(defun biblio-dissemin--translate-classification (classification)
"Translate Dissemin's CLASSIFICATION for display."
(pcase classification
(`"OA" "Available from the publisher")
(`"OK" "Some versions may be shared by the author")
(`"UNK" "Sharing policy is unclear")
(`"CLOSED" "Subject to a restrictive sharing policy")
(_ classification)))
(defun biblio-dissemin--suggest-upload (doi)
"Insert a link to Dissemin's upload page for DOI."
(insert "\n\nDid you write this paper? ")
(biblio-with-fontification '(:weight bold)
(insert
(biblio-make-url-button (format "http://dissem.in/%s" doi) "upload it")))
(insert "!\n"))
(defun biblio-dissemin--pretty-print (paper doi)
"Pretty-print a Dissemin PAPER entry (with DOI) to current buffer."
(let-alist paper
(biblio-insert-result
(list (cons 'title .title)
(cons 'authors (seq-map #'biblio-dissemin--format-author .authors))
(cons 'open-access-status
(biblio-dissemin--translate-classification .classification)))
t)
(biblio-dissemin--insert-button .pdf_url " ")
(if (seq-empty-p .records)
(progn (insert "\n\n(no records)")
(when (member .classification '("OA" "OK"))
(biblio-dissemin--suggest-upload doi)))
(seq-do #'biblio-dissemin--insert-record .records))
(goto-char (point-min))))
(defun biblio-dissemin--print-results (paper doi)
"Create a buffer for Dissemin, and print PAPER (with DOI) into it."
(with-current-buffer (biblio-dissemin--make-buffer)
(let ((inhibit-read-only t))
(erase-buffer)
(help-mode)
(visual-line-mode)
(biblio-dissemin--pretty-print paper doi))
(setq buffer-read-only t)
(pop-to-buffer (current-buffer))))
(defun biblio-dissemin--make-buffer ()
"Create a buffer to display Dissemin results in."
(get-buffer-create "*Dissemin search results*"))
(defun biblio-dissemin--parse-buffer ()
"Extract search results from DBLP response."
(biblio-decode-url-buffer 'utf-8)
(let-alist (json-read)
(unless (string= .status "ok")
(display-warning 'biblio-dissemin "Dissemin query failed"))
.paper))
(defun biblio-dissemin--url (doi)
"Create a DBLP url to look up DOI."
(format "http://dissem.in/api/%s" (url-encode-url doi)))
(defun biblio-dissemin--callback (doi)
"Generate a callback to parse Dissemin results for DOI."
(lambda () ;; no allowed errors, so no arguments
(biblio-dissemin--print-results (biblio-dissemin--parse-buffer) doi)))
;;;###autoload
(defun biblio-dissemin-lookup (doi &optional cleanup)
"Retrieve a record by DOI from Dissemin, and display it.
Interactively, or if CLEANUP is non-nil, pass DOI through
`biblio-cleanup-doi'."
(interactive "MDOI: \nd")
(when cleanup
(setq doi (biblio-cleanup-doi doi)))
(let ((buf (biblio-dissemin--make-buffer)))
(biblio-url-retrieve (biblio-dissemin--url doi)
(biblio-generic-url-callback (biblio-dissemin--callback doi)))
buf))
;;;###autoload
(defalias 'dissemin-lookup 'biblio-dissemin-lookup)
(defun biblio-dissemin--lookup-record (record)
"Retrieve a RECORD from Dissemin, and display it.
RECORD is a formatted record as expected by `biblio-insert-result'."
(let-alist record
(if .doi (dissemin-lookup .doi)
(user-error "Dissemin needs a DOI, but this record does not contain one"))))
;;;###autoload
(defun biblio-dissemin--register-action ()
"Add Dissemin to list of `biblio-selection-mode' actions."
(add-to-list 'biblio-selection-mode-actions-alist
'("Dissemin (find open access copies of this article)" . biblio-dissemin--lookup-record)))
;;;###autoload
(add-hook 'biblio-selection-mode-hook #'biblio-dissemin--register-action)
(provide 'biblio-dissemin)
;;; biblio-dissemin.el ends here