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authorDavid Thompson <dthompson2@worcester.edu>2015-08-16 21:15:45 -0400
committerDavid Thompson <dthompson2@worcester.edu>2015-08-27 19:45:06 -0400
commit3aae8145a73fc7116694c3d8bfced11ae332b491 (patch)
tree0e3cefd8848c29d7a4791540c2fc4c90c4a53da6 /guix/scripts/import/gem.scm
parent140b3048155d8fe4b8598786c014139ac5a91706 (diff)
import: Add Ruby gem importer.
* gnu/scripts/import.scm (importers): Add "gem". * gnu/import/gem.scm: New file. * gnu/scripts/import/gem.scm: New file. * Makefile.am (MODULES): Add them. * guix.texi ("invoking guix import"): Document it.
Diffstat (limited to 'guix/scripts/import/gem.scm')
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diff --git a/guix/scripts/import/gem.scm b/guix/scripts/import/gem.scm
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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2015 David Thompson <davet@gnu.org>
+;;;
+;;; 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 gem)
+ #:use-module (guix ui)
+ #:use-module (guix utils)
+ #:use-module (guix import gem)
+ #:use-module (guix scripts import)
+ #:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-11)
+ #:use-module (srfi srfi-37)
+ #:use-module (ice-9 match)
+ #:use-module (ice-9 format)
+ #:export (guix-import-gem))
+
+
+;;;
+;;; Command-line options.
+;;;
+
+(define %default-options
+ '())
+
+(define (show-help)
+ (display (_ "Usage: guix import gem PACKAGE-NAME
+Import and convert the RubyGems package for PACKAGE-NAME.\n"))
+ (display (_ "
+ -h, --help display this help and exit"))
+ (display (_ "
+ -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 pypi")))
+ %standard-import-options))
+
+
+;;;
+;;; Entry point.
+;;;
+
+(define (guix-import-gem . args)
+ (define (parse-options)
+ ;; Return the alist of option values.
+ (args-fold* args %options
+ (lambda (opt name arg result)
+ (leave (_ "~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
+ ((package-name)
+ (let ((sexp (gem->guix-package package-name)))
+ (unless sexp
+ (leave (_ "failed to download meta-data for package '~a'~%")
+ package-name))
+ sexp))
+ (()
+ (leave (_ "too few arguments~%")))
+ ((many ...)
+ (leave (_ "too many arguments~%"))))))