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;;; Haunt --- Static site generator for GNU Guile
;;; Copyright © 2015, 2022 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:
;;
;; Haunt serve sub-command.
;;
;;; Code:
(define-module (haunt ui serve)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-37)
#:use-module (ice-9 match)
#:use-module (ice-9 format)
#:use-module (ice-9 ftw)
#:use-module (ice-9 threads)
#:use-module (haunt config)
#:use-module (haunt serve web-server)
#:use-module (haunt site)
#:use-module (haunt ui)
#:export (haunt-serve))
(define %linux?
(string=? (utsname:sysname (uname)) "Linux"))
(define (show-help)
(format #t "Usage: haunt serve [OPTION]
Start an HTTP server for the current site.~%")
(display "
-p, --port port to listen on")
(display "
-h, --host host address (IP address, \"localhost\", or \"any\")")
(display "
-w, --watch rebuild site when files change")
(newline)
(show-common-options-help)
(newline)
(display "
-h, --help display this help and exit")
(display "
-V, --version display version and exit")
(newline))
(define %options
(cons* (option '(#\h "help") #f #f
(lambda _
(show-help)
(exit 0)))
(option '(#\V "version") #f #f
(lambda _
(show-version-and-exit "haunt serve")))
(option '(#\p "port") #t #f
(lambda (opt name arg result)
(alist-cons 'port (string->number* arg) result)))
(option '(#\b "host") #t #f
(lambda (opt name arg result)
(define host-addr
(match arg
((or "loopback" "localhost") INADDR_LOOPBACK)
("any" INADDR_ANY)
;; lazy way of doing this...
;; "." or ":" indicates ipv4 or ipv6
((? (cut string-contains <> "."))
(inet-pton AF_INET arg))
((? (cut string-contains <> ":"))
(inet-pton AF_INET6 arg))
(_
(format #t "Unrecognized option for --host: ~a\n" arg)
(display "Must be an IP address, \"localhost\", or \"any\".\n")
(exit 1))))
(alist-cons 'host host-addr result)))
(option '(#\w "watch") #f #f
(lambda (opt name arg result)
(alist-cons 'watch? #t result)))
%common-options))
(define %default-options
(append `((port . 8080)
(host . ,INADDR_LOOPBACK))
%default-common-options))
(define (call-with-error-handling thunk)
(catch #t
thunk
(lambda (key . args)
(let ((cep (current-error-port))
(stack (make-stack #t 1)))
(display "ERROR: site rebuild failed\n\n" cep)
(display "Backtrace:\n" cep)
(display-backtrace stack cep)
(newline cep)
(apply display-error (stack-ref stack 0) cep args)
(newline cep)))))
(define (haunt-serve . args)
(let* ((opts (simple-args-fold args %options %default-options))
(port (assq-ref opts 'port))
(host (assq-ref opts 'host))
(watch? (assq-ref opts 'watch?))
(config (assq-ref opts 'config))
(site (load-config config))
(doc-root (site-build-directory site)))
(format #t "serving ~a on port ~d~%" doc-root port)
(when watch?
;; Resolve correct watch module at runtime so that we don't try
;; to load inotify bindings on Mac OS or something, which would
;; crash.
(let ((watch (if %linux?
(let ((module (resolve-module '(haunt watch linux))))
(display "watch: using inotify mode\n")
(module-ref module 'watch))
(let ((module (resolve-module '(haunt watch fallback))))
(display "watch: using fallback mode\n")
(module-ref module 'watch)))))
(call-with-new-thread
(lambda ()
(watch (lambda ()
(display "rebuilding...\n")
(call-with-error-handling
(lambda ()
(build-site (load-config config)))))
(let ((build-dir (string-append (getcwd) "/"
(site-build-directory site))))
(lambda (dir)
(not
(string-prefix? build-dir dir))))
(site-file-filter site))))))
(serve doc-root #:open-params `(#:port ,port
#:addr ,host))))
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