84934f40d1
* guix/scripts/import/pypi.scm (guix-import-pypi): Use 'leave' to handle cases where ARGS has zero or two or more elements.
92 lines
2.8 KiB
Scheme
92 lines
2.8 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2014 David Thompson <davet@gnu.org>
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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 pypi)
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#:use-module (guix ui)
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#:use-module (guix utils)
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#:use-module (guix import pypi)
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#:use-module (guix scripts import)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-11)
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#:use-module (srfi srfi-37)
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#:use-module (ice-9 match)
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#:use-module (ice-9 format)
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#:export (guix-import-pypi))
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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 (_ "Usage: guix import pypi PACKAGE-NAME
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Import and convert the PyPI package for PACKAGE-NAME.\n"))
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(display (_ "
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-h, --help display this help and exit"))
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(display (_ "
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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 pypi")))
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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-pypi . 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 (_ "~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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((package-name)
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(let ((sexp (pypi->guix-package package-name)))
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(unless sexp
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(leave (_ "failed to download meta-data for package '~a'~%")
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package-name))
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sexp))
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(()
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(leave (_ "too few arguments~%")))
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((many ...)
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(leave (_ "too many arguments~%"))))))
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