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| -rw-r--r-- | Makefile.am | 1 | ||||
| -rw-r--r-- | haunt/reader.scm | 75 |
2 files changed, 76 insertions, 0 deletions
diff --git a/Makefile.am b/Makefile.am index bf205e6..eafc93f 100644 --- a/Makefile.am +++ b/Makefile.am @@ -42,6 +42,7 @@ godir=$(libdir)/guile/2.0/ccache SOURCES = \ haunt/config.scm \ haunt/post.scm \ + haunt/reader.scm \ haunt/ui.scm \ haunt/ui/serve.scm \ haunt/serve/mime-types.scm \ diff --git a/haunt/reader.scm b/haunt/reader.scm new file mode 100644 index 0000000..b667aa6 --- /dev/null +++ b/haunt/reader.scm @@ -0,0 +1,75 @@ +n;;; Haunt --- Static site generator for GNU Guile +;;; Copyright © 2015 David Thompson <davet@gnu.org> +;;; +;;; 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: +;; +;; Post readers. +;; +;;; Code: + +(define-module (haunt reader) + #:use-module (srfi srfi-1) + #:use-module (srfi srfi-9) + #:use-module (srfi srfi-11) + #:use-module (ice-9 regex) + #:use-module (haunt post) + #:export (make-reader + reader? + reader-matcher + reader-proc + reader-match? + read-post + + make-file-extension-matcher + sxml-reader)) + +(define-record-type <reader> + (make-reader matcher proc) + reader? + (matcher reader-matcher) + (proc reader-proc)) + +(define (reader-match? reader file-name) + "Return #t if FILE-NAME is a file supported by READER." + ((reader-matcher reader) file-name)) + +(define* (read-post reader file-name #:optional (default-metadata '())) + "Read a post object from FILE-NAME using READER, merging its +metadata with DEFAULT-METADATA." + (let-values (((metadata sxml) ((reader-proc reader) file-name))) + (make-post file-name + (append metadata default-metadata) + sxml))) + +;;; +;;; Simple readers +;;; + +(define (make-file-extension-matcher ext) + "Return a procedure that returns #t when a file name ends with +'.EXT'." + (let ((regexp (make-regexp (string-append "\\." ext "$")))) + (lambda (file-name) + (regexp-match? (regexp-exec regexp file-name))))) + +(define sxml-reader + (make-reader (make-file-extension-matcher "sxml") + (lambda (file-name) + (let ((contents (load file-name))) + (values (alist-delete 'content contents eq?) + (assq-ref contents 'content)))))) |