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authorLudovic Courtès <ludo@gnu.org>2012-11-01 00:50:01 +0100
committerLudovic Courtès <ludo@gnu.org>2012-11-01 00:52:44 +0100
commit073c34d72f94adf6c4c307239b1de0d14bdb60f3 (patch)
treeb671d6032f3feb08513d80c1be4870053b5af671 /guix
parent111111d04662bb9056c8b56d11e634dc4506ee1e (diff)
Add (guix ui).
* guix/ui.scm: New file. * Makefile.am (MODULES): Add it. * po/POTFILES.in: Add it. * guix-build.in: Use it. (_, N_, leave): Remove. (guix-build): Use `with-error-handling' instead of the `guard' form. * guix-download.in: Use it. (_, N_, leave): Remove.
Diffstat (limited to 'guix')
-rw-r--r--guix/ui.scm75
1 files changed, 75 insertions, 0 deletions
diff --git a/guix/ui.scm b/guix/ui.scm
new file mode 100644
index 0000000000..cb78a21bd8
--- /dev/null
+++ b/guix/ui.scm
@@ -0,0 +1,75 @@
+;;; Guix --- Nix package management from Guile. -*- coding: utf-8 -*-
+;;; Copyright (C) 2012 Ludovic Courtès <ludo@gnu.org>
+;;;
+;;; This file is part of Guix.
+;;;
+;;; 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.
+;;;
+;;; 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 Guix. If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (guix ui)
+ #:use-module (guix utils)
+ #:use-module (guix store)
+ #:use-module (guix packages)
+ #:use-module (srfi srfi-26)
+ #:use-module (srfi srfi-34)
+ #:export (_
+ N_
+ leave
+ call-with-error-handling
+ with-error-handling))
+
+;;; Commentary:
+;;;
+;;; User interface facilities for command-line tools.
+;;;
+;;; Code:
+
+(define %gettext-domain
+ "guix")
+
+(define _ (cut gettext <> %gettext-domain))
+(define N_ (cut ngettext <> <> <> %gettext-domain))
+
+(define-syntax-rule (leave fmt args ...)
+ "Format FMT and ARGS to the error port and exit."
+ (begin
+ (format (current-error-port) fmt args ...)
+ (exit 1)))
+
+(define (call-with-error-handling thunk)
+ "Call THUNK within a user-friendly error handler."
+ (guard (c ((package-input-error? c)
+ (let* ((package (package-error-package c))
+ (input (package-error-invalid-input c))
+ (location (package-location package))
+ (file (location-file location))
+ (line (location-line location))
+ (column (location-column location)))
+ (leave (_ "~a:~a:~a: error: package `~a' has an invalid input: ~s~%")
+ file line column
+ (package-full-name package) input)))
+ ((nix-protocol-error? c)
+ ;; FIXME: Server-provided error messages aren't i18n'd.
+ (leave (_ "error: build failed: ~a~%")
+ (nix-protocol-error-message c))))
+ (thunk)))
+
+(define-syntax with-error-handling
+ (syntax-rules ()
+ "Run BODY within a user-friendly error condition handler."
+ ((_ body ...)
+ (call-with-error-handling
+ (lambda ()
+ body ...)))))
+
+;;; ui.scm ends here