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;;; biblio.scm -- Bibliography functions.
;;;
;;; Copyright 2003-2004 Erick Gallesio - I3S-CNRS/ESSI <eg@essi.fr>
;;; Copyright 2005 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
;;; USA.main.st
(define-module (skribilo biblio)
:use-module (skribilo runtime)
:use-module (skribilo utils syntax) ;; `when', `unless'
:use-module (skribilo module)
:use-module (skribilo skribe bib) ;; `make-bib-entry'
:autoload (srfi srfi-34) (raise)
:use-module (srfi srfi-35)
:autoload (skribilo condition) (&file-search-error)
:autoload (skribilo reader) (%default-reader)
:autoload (skribilo parameters) (*bib-path*)
:autoload (ice-9 format) (format)
:use-module (ice-9 optargs)
:export (bib-table? make-bib-table default-bib-table
bib-add! bib-duplicate bib-for-each bib-map
skribe-open-bib-file parse-bib))
(fluid-set! current-reader %skribilo-module-reader)
;; FIXME: Should be a fluid?
(define *bib-table* #f)
;; Forward declarations
(define skribe-open-bib-file #f)
(define parse-bib #f)
;;; ======================================================================
;;;
;;; Utilities
;;;
;;; ======================================================================
(define (make-bib-table ident)
(make-hash-table))
(define (bib-table? obj)
(hash-table? obj))
(define (default-bib-table)
(unless *bib-table*
(set! *bib-table* (make-bib-table "default-bib-table")))
*bib-table*)
(define (%bib-error who entry)
(let ((msg "bibliography syntax error on entry"))
(if (%epair? entry)
(skribe-line-error (%epair-file entry) (%epair-line entry) who msg entry)
(skribe-error who msg entry))))
(define* (bib-for-each proc :optional (table (default-bib-table)))
(hash-for-each (lambda (ident entry)
(proc ident entry))
table))
(define* (bib-map proc :optional (table (default-bib-table)))
(hash-map->list (lambda (ident entry)
(proc ident entry))
table))
;;; ======================================================================
;;;
;;; BIB-DUPLICATE
;;;
;;; ======================================================================
(define (bib-duplicate ident from old)
(let ((ofrom (markup-option old 'from)))
(skribe-warning 2
'bib
(format #f "duplicated bibliographic entry ~a'.\n" ident)
(if ofrom
(format #f " using version of `~a'.\n" ofrom)
"")
(if from
(format #f " ignoring version of `~a'." from)
" ignoring redefinition."))))
;;; ======================================================================
;;;
;;; PARSE-BIB
;;;
;;; ======================================================================
(define (parse-bib table port)
(let ((read %default-reader)) ;; FIXME: We should use a fluid
(if (not (bib-table? table))
(skribe-error 'parse-bib "Illegal bibliography table" table)
(let ((from (port-filename port)))
(let Loop ((entry (read port)))
(unless (eof-object? entry)
(cond
((and (list? entry) (> (length entry) 2))
(let* ((kind (car entry))
(key (format #f "~A" (cadr entry)))
(fields (cddr entry))
(old (hash-ref table key)))
(if old
(bib-duplicate ident from old)
(hash-set! table key
(make-bib-entry kind key fields from)))
(Loop (read port))))
(else
(%bib-error 'bib-parse entry)))))))))
;;; ======================================================================
;;;
;;; BIB-ADD!
;;;
;;; ======================================================================
(define (bib-add! table . entries)
(if (not (bib-table? table))
(skribe-error 'bib-add! "Illegal bibliography table" table)
(for-each (lambda (entry)
(cond
((and (list? entry) (> (length entry) 2))
(let* ((kind (car entry))
(key (format #f "~A" (cadr entry)))
(fields (cddr entry))
(old (hash-ref table key)))
(if old
(bib-duplicate key #f old)
(hash-set! table key
(make-bib-entry kind key fields #f)))))
(else
(%bib-error 'bib-add! entry))))
entries)))
;;; ======================================================================
;;;
;;; SKRIBE-OPEN-BIB-FILE
;;;
;;; ======================================================================
;; FIXME: Factoriser
(define (skribe-open-bib-file file command)
(let ((path (search-path (*bib-path*) file)))
(if (string? path)
(begin
(when (> (*verbose*) 0)
(format (current-error-port) " [loading bibliography: ~S]\n" path))
(open-input-file (if (string? command)
(string-append "| "
(format #f command path))
path)))
(raise (condition (&file-search-error (file-name file)
(path (*bib-path*))))))))
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