--- /dev/null
+#!/bin/sh
+# aside from this initial boilerplate, this is actually -*- scheme -*- code
+
+GUILE_LOAD_COMPILED_PATH="@guilemoduledir@:$GUILE_LOAD_COMPILED_PATH"
+export GUILE_LOAD_COMPILED_PATH
+
+main='(module-ref (resolve-interface '\''(guix-download)) '\'guix-download')'
+exec ${GUILE-@GUILE@} -L "@guilemoduledir@" -l "$0" \
+ -c "(apply $main (cdr (command-line)))" "$@"
+!#
+;;; Guix --- Nix package management from Guile.
+;;; 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-download)
+ #:use-module (web uri)
+ #:use-module (web client)
+ #:use-module (guix store)
+ #:use-module (guix utils)
+ #:use-module (guix ftp-client)
+ #: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 _ (cut gettext <> "guix"))
+(define N_ (cut ngettext <> <> <> "guix"))
+
+(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 (http-fetch url port)
+ "Fetch from URL over HTTP and write the result to PORT."
+ (let-values (((response data) (http-get url #:decode-body? #f)))
+ (put-bytevector port data)))
+
+(define (ftp-fetch url port)
+ "Fetch from URL over FTP and write the result to PORT."
+ (let* ((conn (ftp-open (uri-host url)
+ (or (uri-port url) 21)))
+ (dir (dirname (uri-path url)))
+ (file (basename (uri-path url)))
+ (in (ftp-retr conn file dir)))
+ (define len 65536)
+ (define buffer
+ (make-bytevector len))
+
+ (let loop ((count (get-bytevector-n! in buffer 0 len)))
+ (if (eof-object? count)
+ (ftp-close conn)
+ (begin
+ (put-bytevector port buffer 0 count)
+ (loop (get-bytevector-n! in buffer 0 len)))))))
+
+\f
+;;;
+;;; Command-line options.
+;;;
+
+(define %default-options
+ ;; Alist of default option values.
+ `((format . ,bytevector->nix-base32-string)))
+
+(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 (show-version)
+ (display "guix-download (@PACKAGE_NAME@) @PACKAGE_VERSION@\n"))
+
+(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)
+ (format #t (_ "
+Report bugs to: ~a.~%") "@PACKAGE_BUGREPORT@"))
+
+(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)
+ (exit 0)))))
+
+\f
+;;;
+;;; 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))
+
+ (setlocale LC_ALL "")
+ (textdomain "guix")
+ (setvbuf (current-output-port) _IOLBF)
+ (setvbuf (current-error-port) _IOLBF)
+
+ (let* ((opts (parse-options))
+ (store (open-connection))
+ (uri (string->uri (assq-ref opts 'argument)))
+ (fetch (case (uri-scheme uri)
+ ((http) http-fetch)
+ ((ftp) ftp-fetch)
+ (else
+ (begin
+ (format (current-error-port)
+ (_ "guix-download: ~a: unsupported URI scheme~%")
+ (uri-scheme uri))
+ (exit 1)))))
+ (path (call-with-temporary-output-file
+ (lambda (name port)
+ (fetch uri port)
+ (close port)
+ (add-to-store store (basename (uri-path uri))
+ #f #f "sha256" name))))
+ (fmt (assq-ref opts 'format)))
+ (format #t "~a~%~a~%"
+ path
+ (fmt (query-path-hash store path)))
+ #t))
HCoop / jackhill / guix / guix.git / commitdiff