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Re: the next volume of Berserk
From: |
Emanuel Berg |
Subject: |
Re: the next volume of Berserk |
Date: |
Sat, 04 Sep 2021 07:44:20 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
I wrote a better version - I think - by getting away with the
string match stuff (almost) and instead unified the retrieval
from the ISBN-13 string ... keep it real.
;;; -*- lexical-binding: t -*-
;;;
;;; this file:
;;; https://dataswamp.org/~incal/emacs-init/bibtex/bibtex-next-volume.el
;;;
;;; uses:
;;; https://dataswamp.org/~incal/emacs-init/bibtex-incal.el
;;; https://dataswamp.org/~incal/emacs-init/isbn-verify.el
;;;
;;; To test, uncomment the below entry (named "berserk-23"),
;;; move point above it, and do
;;;
;;; M-x next-book RET RET RET RET RET RET
;;;
;;; @book{berserk-23,
;;; author = {Kentaro Miura},
;;; isbn = {978-1-59307-864-5},
;;; publisher = {Dark Horse},
;;; title = {Berserk 23},
;;; year = {2008}
;;; }
;;;
;;; This will insert the following entry, which indeed is the
;;; next book in the series:
;;;
;;; @book{berserk-24,
;;; author = {Kentaro Miura},
;;; isbn = {978-1-59307-865-2},
;;; publisher = {Dark Horse},
;;; title = {Berserk 24},
;;; year = {2008}
;;; }
(require 'cl-lib)
(require 'bibtex)
(require 'bibtex-incal)
(require 'isbn-verify)
(defun title-next (title)
(when (string-match "\\(.+\\) \\([[:digit:]]+\\)" title)
(let*((name (match-string 1 title))
(vol (match-string 2 title))
(vol-next (read-number "Volume: " (1+ (string-to-number vol)))) )
(format "%s %s" name vol-next) )))
;; (title-next "Berserk 23") ; Berserk 24
(defun isbn-13-bibtex-entry-get-isbn ()
(let ((isbn-13 (bibtex-autokey-get-field "isbn-13")))
(if (not (string= isbn-13 ""))
isbn-13
(let ((isbn (bibtex-autokey-get-field "isbn")))
(unless (string= isbn "")
isbn) ))))
(defun isbn-13-field (isbn field &optional field-stop)
(let*((beg (1- field))
(end (or field-stop field))
(sep "-")
(subl (cl-subseq (split-string isbn sep) beg end)) )
(if (= 1 (length subl))
(string-to-number (car subl))
(string-join subl sep) )))
;; (isbn-13-field "978-1-59307-864-5" 1) ; 978
;; (isbn-13-field "978-1-59307-864-5" 1 4) ; 978-1-59307-864
(defun isbn-13-publisher (isbn)
(let ((publisher (isbn-13-field isbn 3)))
(read-number "Publisher: " publisher) ))
;; (isbn-13-publisher "978-1-59307-864-5") ; 59307
(defun isbn-13-publication-next (isbn)
(let*((publication (isbn-13-field isbn 4))
(publication-next (1+ publication)) )
(read-number "Publication: " publication-next) ))
;; (isbn-13-publication-next "978-1-59307-864-5") ; 865
(defun isbn-13-next (isbn)
(let*((but-last (format "%s-%s-%s" (isbn-13-field isbn 1 2)
(isbn-13-publisher isbn)
(isbn-13-publication-next isbn) ))
(check-digit (read-number "Check digit: " (isbn-verify but-last))) )
(format "%s-%s" but-last check-digit) ))
;; (isbn-13-next "978-1-59307-864-5") ; 978-1-59307-865-2
(defun new-book-next ()
(interactive)
(let ((beg (point)))
(when (bibtex-next-entry)
(let ((author (bibtex-autokey-get-field "author"))
(isbn (isbn-13-bibtex-entry-get-isbn))
(publisher (bibtex-autokey-get-field "publisher"))
(title (bibtex-autokey-get-field "title"))
(year (string-to-number
(bibtex-autokey-get-field "year") )))
(unless (and author isbn publisher title year)
(error "Incomplete Bibtex entry") )
(let*((isbn-new (isbn-13-next isbn))
(title-new (title-next title))
(year-new (read-number "Year: " year)) )
(goto-char beg)
(create-book author isbn-new publisher title-new year-new)
(bibtex-insert-autokey-check-isbn)
(goto-char beg) )))))
(defalias 'next-book #'new-book-next)
--
underground experts united
https://dataswamp.org/~incal