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;;; tissue --- Text based issue tracker
;;; Copyright © 2022 Arun Isaac <arunisaac@systemreboot.net>
;;;
;;; This file is part of tissue.
;;;
;;; tissue 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.
;;;
;;; tissue 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 tissue. If not, see <https://www.gnu.org/licenses/>.
(define-module (tissue document)
#:use-module (rnrs hashtables)
#:use-module (rnrs io ports)
#:use-module (srfi srfi-9)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-171)
#:use-module (term ansi-color)
#:use-module (xapian xapian)
#:use-module (tissue utils)
#:export (document
document?
document-file
document-title
document->alist
alist->document
print-document
read-gemtext-document
index-document))
(define-record-type <document>
(document file title)
document?
(file document-file)
(title document-title))
(define (document->alist document)
"Convert DOCUMENT, a <document> object, to an association list that
can be serialized."
`((type . document)
(file . ,(document-file document))
(title . ,(document-title document))))
(define (alist->document alist)
"Convert ALIST to a <document> object."
(document (assq-ref alist 'file)
(assq-ref alist 'title)))
(define (print-document document)
"Print DOCUMENT, a <document> object, in search results."
(display (colorize-string (document-title document) 'MAGENTA 'UNDERLINE))
(newline)
(display (colorize-string (document-file document) 'YELLOW))
(newline)
(newline))
(define (read-gemtext-document file)
"Reade gemtext document from FILE. Return a <document> object."
(document file
(or (call-with-input-file file
(lambda (port)
(port-transduce (tfilter-map (lambda (line)
;; The first level one
;; heading is the title.
(and (string-prefix? "# " line)
(string-remove-prefix "# " line))))
(rany identity)
get-line-dos-or-unix
port)))
;; Fallback to filename if document has no title.
file)))
(define (index-document db document)
"Index DOCUMENT, a <document> object, in writable xapian DB."
(let* ((idterm (string-append "Q" (document-file document)))
(body (call-with-input-file (document-file document)
get-string-all))
(doc (make-document #:data (call-with-output-string
(cut write (document->alist document) <>))
#:terms `((,idterm . 0))))
(term-generator (make-term-generator #:stem (make-stem "en")
#:document doc)))
(index-text! term-generator "document" #:prefix "XT")
(index-text! term-generator body)
(replace-document! db idterm doc)))
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