new file mode 100644
@@ -0,0 +1,51 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2021 Sarah Morgensen <iskarian@mgsn.dev>
+;;;
+;;; 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 <http://www.gnu.org/licenses/>.
+
+(define-module (guix hash)
+ #:use-module (gcrypt hash)
+ #:use-module (guix serialization)
+ #:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-11)
+ #:export (vcs-file?
+ file-hash*))
+
+(define (vcs-file? file stat)
+ "Returns true if FILE is a version control system file."
+ (case (stat:type stat)
+ ((directory)
+ (member (basename file) '(".bzr" ".git" ".hg" ".svn" "CVS")))
+ ((regular)
+ ;; Git sub-modules have a '.git' file that is a regular text file.
+ (string=? (basename file) ".git"))
+ (else
+ #f)))
+
+(define* (file-hash* file #:key
+ (algorithm (hash-algorithm sha256))
+ (recursive? #t)
+ (select? (negate vcs-file?)))
+ "Compute the hash of FILE with ALGORITHM. If RECURSIVE? is true, recurse
+into subdirectories of FILE, computing the combined hash of all files for
+which (SELECT? FILE STAT) returns true."
+ (if recursive?
+ (let-values (((port get-hash)
+ (open-hash-port algorithm)))
+ (write-file file port #:select? select?)
+ (force-output port)
+ (get-hash))
+ (file-hash algorithm file)))
@@ -3,6 +3,7 @@
;;; Copyright © 2013 Nikita Karetnikov <nikita@karetnikov.org>
;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2018 Tim Gesthuizen <tim.gesthuizen@yahoo.de>
+;;; Copyright © 2021 Sarah Morgensen <iskarian@mgsn.dev>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -23,6 +24,7 @@
#:use-module (gcrypt hash)
#:use-module (guix serialization)
#:use-module (guix ui)
+ #:use-module (guix hash)
#:use-module (guix scripts)
#:use-module (guix base16)
#:use-module (guix base32)
@@ -125,16 +127,6 @@ and 'base16' ('hex' and 'hexadecimal' can be used as well).\n"))
(parse-command-line args %options (list %default-options)
#:build-options? #f))
- (define (vcs-file? file stat)
- (case (stat:type stat)
- ((directory)
- (member (basename file) '(".bzr" ".git" ".hg" ".svn" "CVS")))
- ((regular)
- ;; Git sub-modules have a '.git' file that is a regular text file.
- (string=? (basename file) ".git"))
- (else
- #f)))
-
(let* ((opts (parse-options))
(args (filter-map (match-lambda
(('argument . value)
@@ -150,18 +142,11 @@ and 'base16' ('hex' and 'hexadecimal' can be used as well).\n"))
;; Compute the hash of FILE.
;; Catch and gracefully report possible '&nar-error' conditions.
(with-error-handling
- (if (assoc-ref opts 'recursive?)
- (let-values (((port get-hash)
- (open-hash-port (assoc-ref opts 'hash-algorithm))))
- (write-file file port #:select? select?)
- (force-output port)
- (get-hash))
- (match file
- ("-" (port-hash (assoc-ref opts 'hash-algorithm)
- (current-input-port)))
- (_ (call-with-input-file file
- (cute port-hash (assoc-ref opts 'hash-algorithm)
- <>)))))))
+ (match file
+ ("-" (port-hash (assoc-ref opts 'hash-algorithm)
+ (current-input-port)))
+ (_ (file-hash* #:algorithm (assoc-ref opts 'hash-algorithm)
+ #:recursive? (assoc-ref opts 'recursive?))))))
(match args
((file)