103 lines
3.3 KiB
Scheme
103 lines
3.3 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org>
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;;; Copyright © 2015, 2017 Ricardo Wurmus <rekado@elephly.net>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (guix scripts import json)
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#:use-module (json)
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#:use-module (guix ui)
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#:use-module (guix utils)
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#:use-module (guix scripts)
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#:use-module (guix import utils)
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#:use-module (guix import print)
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#:use-module (guix scripts import)
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#:use-module (guix packages)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-9 gnu)
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#:use-module (srfi srfi-11)
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#:use-module (srfi srfi-37)
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#:use-module (srfi srfi-41)
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#:use-module (ice-9 match)
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#:use-module (ice-9 rdelim)
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#:use-module (ice-9 format)
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#:export (guix-import-json))
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;;;
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;;; Command-line options.
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;;;
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(define %default-options
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'())
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(define (show-help)
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(display (G_ "Usage: guix import json PACKAGE-FILE
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Import and convert the JSON package definition in PACKAGE-FILE.\n"))
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(display (G_ "
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-h, --help display this help and exit"))
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(display (G_ "
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-V, --version display version information and exit"))
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(newline)
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(show-bug-report-information))
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(define %options
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;; Specification of the command-line options.
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(cons* (option '(#\h "help") #f #f
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(lambda args
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(show-help)
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(exit 0)))
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(option '(#\V "version") #f #f
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(lambda args
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(show-version-and-exit "guix import json")))
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%standard-import-options))
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;;;
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;;; Entry point.
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;;;
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(define (guix-import-json . args)
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(define (parse-options)
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;; Return the alist of option values.
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(args-fold* args %options
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(lambda (opt name arg result)
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(leave (G_ "~A: unrecognized option~%") name))
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(lambda (arg result)
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(alist-cons 'argument arg result))
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%default-options))
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(let* ((opts (parse-options))
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(args (filter-map (match-lambda
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(('argument . value)
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value)
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(_ #f))
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(reverse opts))))
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(match args
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((file-name)
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(catch 'json-invalid
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(lambda ()
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(let ((json (json-string->scm
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(with-input-from-file file-name read-string))))
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;; TODO: also print define-module boilerplate
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(package->code (alist->package json))))
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(lambda _
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(leave (G_ "invalid JSON in file '~a'~%") file-name))))
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(()
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(leave (G_ "too few arguments~%")))
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((many ...)
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(leave (G_ "too many arguments~%"))))))
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