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;;; guix-web - Web interface for GNU Guix
;;; Copyright © 2014 David Thompson <davet@gnu.org>
;;;
;;; This program is free software: you can redistribute it and/or
;;; modify it under the terms of the GNU Affero General Public License
;;; as published by the Free Software Foundation, either version 3 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
;;; Affero General Public License for more details.
;;;
;;; You should have received a copy of the GNU Affero General Public
;;; License along with this program. If not, see
;;; <http://www.gnu.org/licenses/>.
(define-module (guix-web render)
#:use-module (web response)
#:use-module (web uri)
#:use-module (sxml simple)
#:use-module (json)
#:export (render-html
render-json
not-found
unprocessable-entity
created
redirect))
(define (render-html sxml)
(list '((content-type . (text/html)))
(lambda (port)
(display "<!DOCTYPE html>" port)
(sxml->xml sxml port))))
(define (render-json json)
(list '((content-type . (application/json)))
(lambda (port)
(scm->json json port))))
(define (not-found uri)
(list (build-response #:code 404)
(string-append "Resource not found: " (uri->string uri))))
(define (unprocessable-entity)
(list (build-response #:code 422)
""))
(define (created)
(list (build-response #:code 201)
""))
(define (redirect path)
(let ((uri (build-uri 'http
#:path (string-append
"/" (encode-and-join-uri-path path)))))
(list (build-response
#:code 301
#:headers `((content-type . (text/html))
(location . ,uri)))
(format #f "Redirect to ~a" (uri->string uri)))))
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