summaryrefslogtreecommitdiff
path: root/guix/scripts/import/json.scm
diff options
context:
space:
mode:
authorRicardo Wurmus <rekado@elephly.net>2017-08-27 17:41:18 +0200
committerRicardo Wurmus <rekado@elephly.net>2017-09-28 13:10:11 +0200
commitfb1db385476bc4548d3eadea93b5dd6a346839f2 (patch)
tree6c505efc758fc6ecc15c567a906d353d5ef1adb5 /guix/scripts/import/json.scm
parent5e892bc365a3da0d30a0982783ee2ab82ee090f8 (diff)
import: Add JSON importer.
* doc/guix.texi (Invoking guix import): Document it. * guix/scripts/import/json.scm: New file. * Makefile.am (MODULES): Add it. * guix/scripts/import.scm (importers): Add json importer.
Diffstat (limited to 'guix/scripts/import/json.scm')
-rw-r--r--guix/scripts/import/json.scm102
1 files changed, 102 insertions, 0 deletions
diff --git a/guix/scripts/import/json.scm b/guix/scripts/import/json.scm
new file mode 100644
index 0000000000..8771e7b0eb
--- /dev/null
+++ b/guix/scripts/import/json.scm
@@ -0,0 +1,102 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org>
+;;; Copyright © 2015, 2017 Ricardo Wurmus <rekado@elephly.net>
+;;;
+;;; 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 (guix scripts import json)
+ #:use-module (json)
+ #:use-module (guix ui)
+ #:use-module (guix utils)
+ #:use-module (guix scripts)
+ #:use-module (guix import utils)
+ #:use-module (guix import print)
+ #:use-module (guix scripts import)
+ #:use-module (guix packages)
+ #:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-9 gnu)
+ #:use-module (srfi srfi-11)
+ #:use-module (srfi srfi-37)
+ #:use-module (srfi srfi-41)
+ #:use-module (ice-9 match)
+ #:use-module (ice-9 rdelim)
+ #:use-module (ice-9 format)
+ #:export (guix-import-json))
+
+
+;;;
+;;; Command-line options.
+;;;
+
+(define %default-options
+ '())
+
+(define (show-help)
+ (display (G_ "Usage: guix import json PACKAGE-FILE
+Import and convert the JSON package definition in PACKAGE-FILE.\n"))
+ (display (G_ "
+ -h, --help display this help and exit"))
+ (display (G_ "
+ -V, --version display version information and exit"))
+ (newline)
+ (show-bug-report-information))
+
+(define %options
+ ;; Specification of the command-line options.
+ (cons* (option '(#\h "help") #f #f
+ (lambda args
+ (show-help)
+ (exit 0)))
+ (option '(#\V "version") #f #f
+ (lambda args
+ (show-version-and-exit "guix import json")))
+ %standard-import-options))
+
+
+;;;
+;;; Entry point.
+;;;
+
+(define (guix-import-json . args)
+ (define (parse-options)
+ ;; Return the alist of option values.
+ (args-fold* args %options
+ (lambda (opt name arg result)
+ (leave (G_ "~A: unrecognized option~%") name))
+ (lambda (arg result)
+ (alist-cons 'argument arg result))
+ %default-options))
+
+ (let* ((opts (parse-options))
+ (args (filter-map (match-lambda
+ (('argument . value)
+ value)
+ (_ #f))
+ (reverse opts))))
+ (match args
+ ((file-name)
+ (catch 'json-invalid
+ (lambda ()
+ (let ((json (json-string->scm
+ (with-input-from-file file-name read-string))))
+ ;; TODO: also print define-module boilerplate
+ (package->code (alist->package (hash-table->alist json)))))
+ (lambda _
+ (leave (G_ "invalid JSON in file '~a'~%") file-name))))
+ (()
+ (leave (G_ "too few arguments~%")))
+ ((many ...)
+ (leave (G_ "too many arguments~%"))))))