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-rw-r--r--Makefile.am1
-rw-r--r--haunt/reader.scm75
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))))))