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;;; author.scm -- Handling author names.
;;;
;;; Copyright 2006, 2007 Ludovic Court�s <ludovic.courtes@laas.fr>
;;;
;;;
;;; 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 2 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, write to the Free Software
;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
;;; USA.
(define-module (skribilo biblio author)
:use-module (srfi srfi-13)
:use-module (skribilo biblio abbrev)
:autoload (skribilo ast) (markup-option markup-body markup-ident)
:autoload (skribilo lib) (skribe-error)
:autoload (skribilo utils strings) (make-string-replace)
:autoload (skribilo package base) (it)
:export (comma-separated->author-list
comma-separated->and-separated-authors
extract-first-author-name
abbreviate-author-first-names
abbreviate-first-names
first-author-last-name
short-author-names
bib-sort/first-author-last-name))
;;; Author: Ludovic Court�s
;;;
;;; Commentary:
;;;
;;; Heuristics to manipulate author names as strings.
;;;
;;; Code:
(define (comma-separated->author-list authors)
;; Return a list of strings where each individual string is an author
;; name. AUTHORS is a string representing a list of author names separated
;; by a comma.
;; XXX: I should use SRFI-13 instead.
(string-split authors #\,))
(define (comma-separated->and-separated-authors authors)
;; Take AUTHORS, a string containing comma-separated author names, and
;; return a string where author names are separated by " and " (suitable
;; for BibTeX).
(string-join (comma-separated->author-list authors)
" and "))
(define (extract-first-author-name names)
;; Extract the name of the first author from string
;; NAMES that is a comma-separated list of authors.
(let ((author-name-end (or (string-index names #\,)
(string-length names))))
(substring names 0 author-name-end)))
(define (abbreviate-author-first-names name)
;; Abbreviate author first names
(let* ((components (string-split name #\space))
(component-number (length components)))
(string-concatenate
(append
(map (lambda (c)
(string-append (abbreviate-word c) " "))
(list-head components
(- component-number 1)))
(list-tail components (- component-number 1))))))
(define (abbreviate-first-names names)
;; Abbreviate first names in NAMES. NAMES is supposed to be
;; something like "Ludovic Court�s, Marc-Olivier Killijian".
(let loop ((names ((make-string-replace '((#\newline " ")
(#\tab " ")))
names))
(result ""))
(if (string=? names "")
result
(let* ((len (string-length names))
(first-author-names-end (or (string-index names #\,)
len))
(first-author-names (substring names 0
first-author-names-end))
(next (substring names
(min (+ 1 first-author-names-end) len)
len)))
(loop next
(string-append result
(if (string=? "" result) "" ", ")
(abbreviate-author-first-names
first-author-names)))))))
(define (first-author-last-name authors)
;; Return a string containing exactly the last name of the first author.
;; Author names in AUTHORS are assumed to be comma separated.
(let loop ((first-author (extract-first-author-name authors)))
(let ((space (string-index first-author #\space)))
(if (not space)
first-author
(loop (substring first-author (+ space 1)
(string-length first-author)))))))
(define (short-author-names authors)
;; Given AUTHORS (a string containing a comma-separated author list),
;; return author markup suitable for use as a bibliography identifier. For
;; instance, "Smith", "Smith & Johnson", "Smith et al.".
(let ((authors (comma-separated->author-list authors)))
(if (null? (cdr authors))
(first-author-last-name (car authors))
(if (null? (cddr authors))
(string-append (first-author-last-name (car authors))
" & "
(first-author-last-name (cadr authors)))
(list (first-author-last-name (car authors)) " "
(it " et al."))))))
(define (bib-sort/first-author-last-name entries)
;; May be passed as the `:sort' argument of `the-bibliography'.
(let ((check-author (lambda (e)
(if (not (markup-option e 'author))
(skribe-error 'web
"No author for this bib entry"
(markup-ident e))
#t))))
(sort entries
(lambda (e1 e2)
(and (check-author e1)
(check-author e2)
(let* ((a1 (first-author-last-name
(markup-body (markup-option e1 'author))))
(a2 (first-author-last-name
(markup-body (markup-option e2 'author)))))
(string-ci<=? a1 a2)))))))
;;; arch-tag: c9a1ef10-a2cd-4a06-bd35-fbdee1abf09a
;;; author.scm ends here
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