;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 John Darrington <jmd@gnu.org>
;;; Copyright © 2015 Andy Wingo <wingo@igalia.com>
;;; Copyright © 2016 Andy Patterson <ajpatter@uwaterloo.ca>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix 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.
;;;
;;; GNU Guix 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 GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages scanner)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix utils)
  #:use-module (guix build-system gnu)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages libusb)
  #:use-module ((guix licenses)
                #:prefix licence:))

(define-public sane-backends
  (package
    (name "sane-backends")
    (version "1.0.25")
    (source (origin
             (method url-fetch)
             (uri (string-append
                   "https://alioth.debian.org/frs/download.php/file/4146/"
                   name "-" version ".tar.gz"))
             (sha256
              (base32
               "0b3fvhrxl4l82bf3v0j47ypjv6a0k5lqbgknrq1agpmjca6vmmx4"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("libusb-compat" ,libusb-compat)))
    (arguments
     `(#:tests? #f
       #:phases
       (modify-phases %standard-phases
         (add-after
          'install 'install-udev-rules
          (lambda* (#:key outputs #:allow-other-keys)
            (let ((out (assoc-ref outputs "out")))
              (mkdir-p (string-append out "/lib/udev/rules.d"))
              (copy-file "tools/udev/libsane.rules"
                         (string-append out
                                        "/lib/udev/rules.d/"
                                        "60-libsane.rules"))))))))
    ;; It would seem that tests are not maintained - fails with
    ;; the following:
    ;;
    ;; < This page was last updated on Wed Jul 31 07:52:48 2013
    ;; <  by sane-desc 3.5 from sane-backends 1.0.24git
    ;; ---
    ;; > This page was last updated on Sun Oct 19 15:41:39 2014
    ;; >  by sane-desc 3.5 from sane-backends 1.0.24
    ;; **** File generated for html-backends-split mode is different from reference
    ;; Makefile:501: recipe for target 'check.local' failed
    (home-page "http://www.sane-project.org")
    (synopsis "Raster image scanner library and drivers")
    (description "SANE stands for \"Scanner Access Now Easy\" and is an API
proving access to any raster image scanner hardware (flatbed scanner,
hand-held scanner, video- and still-cameras, frame-grabbers, etc.).  The
package contains the library and drivers.")
    (license licence:gpl2+))) ; plus linking exception

;; This variant links in the hpaio backend, provided by hplip, which adds
;; support for HP scanners whose backends are not maintained by
;; 'sane-backends'
(define-public sane-backends+hpaio
  (package
    (inherit sane-backends)
    (name "sane-backends+hpaio")
    (inputs
     `(("hplip" ,(@ (gnu packages cups) hplip))
       ,@(package-inputs sane-backends)))
    (arguments
     (substitute-keyword-arguments (package-arguments sane-backends)
       ((#:phases phases)
        `(modify-phases ,phases
           (add-after 'unpack 'add-backends
             (lambda _
               (substitute* "backend/dll.conf.in"
                 (("hp5590" all) (format #f "~a~%~a" all "hpaio")))
               #t))
           (add-after 'install 'install-hpaio
             (lambda* (#:key inputs outputs #:allow-other-keys)
               (define hplip (string-append (assoc-ref inputs "hplip")
                                            "/lib/sane"))
               (define out (string-append (assoc-ref outputs "out")
                                          "/lib/sane"))
               (for-each
                (lambda (file)
                  (symlink file (string-append out "/" (basename file))))
                (find-files hplip))
               #t))))))
    (synopsis
     "Raster image scanner library and drivers, with full HP scanner support")))