From e49951eb3e1e1a8e7bad6d7471483e70b0865352 Mon Sep 17 00:00:00 2001 From: Mark H Weaver Date: Thu, 14 Feb 2013 04:15:25 -0500 Subject: Replace individual scripts with master 'guix' script. * scripts/guix.in: New script. * Makefile.am (bin_SCRIPTS): Add 'scripts/guix'. Remove 'guix-build', 'guix-download', 'guix-import', 'guix-package', and 'guix-gc'. (MODULES): Add 'guix/scripts/build.scm', 'guix/scripts/download.scm', 'guix/scripts/import.scm', 'guix/scripts/package.scm', and 'guix/scripts/gc.scm'. * configure.ac (AC_CONFIG_FILES): Add 'scripts/guix'. Remove 'guix-build', 'guix-download', 'guix-import', 'guix-package', and 'guix-gc'. * guix-build.in, guix-download.in, guix-gc.in, guix-import.in, guix-package.in: Remove shell script boilerplate. Move to guix-COMMAND.in to guix/scripts/COMMAND.scm. Rename module from (guix-COMMAND) to (guix scripts COMMAND). Change "guix-COMMAND" to "guix COMMAND" in usage help string. * pre-inst-env.in: Add "@abs_top_builddir@/scripts" to the front of $PATH. Export $GUIX_UNINSTALLED. * tests/guix-build.sh, tests/guix-daemon.sh, tests/guix-download.sh, tests/guix-gc.sh, tests/guix-package.sh: Use "guix COMMAND" instead of "guix-COMMAND". * doc/guix.texi: Replace all occurrences of "guix-COMMAND" with "guix COMMAND". * po/POTFILES.in: Update. --- guix/scripts/download.scm | 151 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 151 insertions(+) create mode 100644 guix/scripts/download.scm (limited to 'guix/scripts/download.scm') diff --git a/guix/scripts/download.scm b/guix/scripts/download.scm new file mode 100644 index 0000000000..1098e6714b --- /dev/null +++ b/guix/scripts/download.scm @@ -0,0 +1,151 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2012, 2013 Ludovic Courtès +;;; +;;; 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 . + +(define-module (guix scripts download) + #:use-module (guix ui) + #:use-module (guix store) + #:use-module (guix utils) + #:use-module (guix base32) + #:use-module ((guix download) #:select (%mirrors)) + #:use-module (guix build download) + #:use-module (web uri) + #:use-module (ice-9 match) + #:use-module (srfi srfi-1) + #:use-module (srfi srfi-11) + #:use-module (srfi srfi-26) + #:use-module (srfi srfi-37) + #:use-module (rnrs bytevectors) + #:use-module (rnrs io ports) + #:export (guix-download)) + +(define (call-with-temporary-output-file proc) + (let* ((template (string-copy "guix-download.XXXXXX")) + (out (mkstemp! template))) + (dynamic-wind + (lambda () + #t) + (lambda () + (proc template out)) + (lambda () + (false-if-exception (delete-file template)))))) + +(define (fetch-and-store store fetch name) + "Call FETCH for URI, and pass it the name of a file to write to; eventually, +copy data from that port to STORE, under NAME. Return the resulting +store path." + (call-with-temporary-output-file + (lambda (temp port) + (let ((result + (parameterize ((current-output-port (current-error-port))) + (fetch temp)))) + (close port) + (and result + (add-to-store store name #f "sha256" temp)))))) + +;;; +;;; Command-line options. +;;; + +(define %default-options + ;; Alist of default option values. + `((format . ,bytevector->nix-base32-string))) + +(define (show-help) + (display (_ "Usage: guix download [OPTION]... URL +Download the file at URL, add it to the store, and print its store path +and the hash of its contents.\n")) + (format #t (_ " + -f, --format=FMT write the hash in the given format (default: `nix-base32')")) + (newline) + (display (_ " + -h, --help display this help and exit")) + (display (_ " + -V, --version display version information and exit")) + (newline) + (show-bug-report-information)) + +(define %options + ;; Specifications of the command-line options. + (list (option '(#\f "format") #t #f + (lambda (opt name arg result) + (define fmt-proc + (match arg + ("nix-base32" + bytevector->nix-base32-string) + ("base32" + bytevector->base32-string) + ((or "base16" "hex" "hexadecimal") + bytevector->base16-string) + (x + (format (current-error-port) + "unsupported hash format: ~a~%" arg)))) + + (alist-cons 'format fmt-proc + (alist-delete 'format result)))) + + (option '(#\h "help") #f #f + (lambda args + (show-help) + (exit 0))) + (option '(#\V "version") #f #f + (lambda args + (show-version-and-exit "guix-download"))))) + + +;;; +;;; Entry point. +;;; + +(define (guix-download . 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)) + + (install-locale) + (textdomain "guix") + (setvbuf (current-output-port) _IOLBF) + (setvbuf (current-error-port) _IOLBF) + + (let* ((opts (parse-options)) + (store (open-connection)) + (arg (assq-ref opts 'argument)) + (uri (or (string->uri arg) + (leave (_ "guix-download: ~a: failed to parse URI~%") + arg))) + (path (case (uri-scheme uri) + ((file) + (add-to-store store (basename (uri-path uri)) + #f "sha256" (uri-path uri))) + (else + (fetch-and-store store + (cut url-fetch arg <> + #:mirrors %mirrors) + (basename (uri-path uri)))))) + (hash (call-with-input-file + (or path + (leave (_ "guix-download: ~a: download failed~%") + arg)) + (compose sha256 get-bytevector-all))) + (fmt (assq-ref opts 'format))) + (format #t "~a~%~a~%" path (fmt hash)) + #t)) -- cgit v1.2.3