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;;; Haunt --- Static site generator for GNU Guile
;;; Copyright © 2016 Erik Edrosa <erik.edrosa@gmail.com>
;;;
;;; This file is part of Haunt.
;;;
;;; Haunt 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.
;;;
;;; Haunt 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 Haunt. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; CommonMark post reader.
;;
;;; Code:
(define-module (website readers wordpress-markdown)
#:use-module (commonmark)
#:use-module (haunt post)
#:use-module (haunt reader)
#:use-module (haunt utils)
#:use-module (ice-9 match)
#:use-module (ice-9 rdelim)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-19)
#:export (wordpress-markdown-reader))
(fluid-set! %default-port-encoding "UTF-8")
(define (string->custom-date* str)
"Convert STR, a string in ISO 8601 format or the default format, into a
SRFI-19 date object."
(or (catch 'misc-error
(lambda _ (string->date str "~Y-~m-~dT~H:~M:~S~z"))
(const #f))
(catch 'misc-error
(lambda _ (string->date str "~Y~m~d ~H:~M"))
(const #f))))
(define (string->string* str) str)
(register-metadata-parser! 'date string->custom-date*)
(register-metadata-parser! 'authors string->string*)
(register-metadata-parser! 'license string->string*)
(define wordpress-markdown-reader
(make-reader (make-file-extension-matcher "md")
(lambda (file)
(call-with-input-file file
(lambda (port)
(values (read-metadata-headers port)
(commonmark->sxml port)))))))
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