cdd5d6f95f
* guix/ui.scm (show-version-and-exit): New procedure. * guix-build.in (show-version): Remove. (%options)["version"]: Use `show-version-and-exit'. * guix-download.in: Likewise. * guix-package.in: Likewise.
84 lines
2.8 KiB
Scheme
84 lines
2.8 KiB
Scheme
;;; Guix --- Nix package management from Guile. -*- coding: utf-8 -*-
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;;; Copyright (C) 2012 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of Guix.
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;;;
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;;; 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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;;; 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 Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (guix ui)
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#:use-module (guix utils)
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#:use-module (guix store)
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#:use-module (guix config)
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#:use-module (guix packages)
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#:use-module (srfi srfi-26)
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#:use-module (srfi srfi-34)
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#:export (_
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N_
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leave
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show-version-and-exit
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call-with-error-handling
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with-error-handling))
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;;; Commentary:
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;;;
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;;; User interface facilities for command-line tools.
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;;;
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;;; Code:
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(define %gettext-domain
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"guix")
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(define _ (cut gettext <> %gettext-domain))
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(define N_ (cut ngettext <> <> <> %gettext-domain))
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(define-syntax-rule (leave fmt args ...)
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"Format FMT and ARGS to the error port and exit."
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(begin
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(format (current-error-port) fmt args ...)
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(exit 1)))
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(define* (show-version-and-exit #:optional (command (car (command-line))))
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"Display version information for COMMAND and `(exit 0)'."
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(simple-format #t "~a (~a) ~a~%"
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command %guix-package-name %guix-version)
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(exit 0))
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(define (call-with-error-handling thunk)
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"Call THUNK within a user-friendly error handler."
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(guard (c ((package-input-error? c)
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(let* ((package (package-error-package c))
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(input (package-error-invalid-input c))
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(location (package-location package))
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(file (location-file location))
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(line (location-line location))
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(column (location-column location)))
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(leave (_ "~a:~a:~a: error: package `~a' has an invalid input: ~s~%")
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file line column
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(package-full-name package) input)))
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((nix-protocol-error? c)
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;; FIXME: Server-provided error messages aren't i18n'd.
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(leave (_ "error: build failed: ~a~%")
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(nix-protocol-error-message c))))
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(thunk)))
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(define-syntax with-error-handling
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(syntax-rules ()
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"Run BODY within a user-friendly error condition handler."
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((_ body ...)
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(call-with-error-handling
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(lambda ()
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body ...)))))
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;;; ui.scm ends here
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