diff options
Diffstat (limited to 'guix/digests.scm')
| -rw-r--r-- | guix/digests.scm | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/guix/digests.scm b/guix/digests.scm index 9b09b010f6..68f8219469 100644 --- a/guix/digests.scm +++ b/guix/digests.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2020 Ludovic Courtès <ludo@gnu.org> +;;; Copyright © 2020, 2021 Ludovic Courtès <ludo@gnu.org> ;;; ;;; This file is part of GNU Guix. ;;; @@ -41,7 +41,8 @@ file-digest restore-digest - digest->sexp)) + digest->sexp + sexp->digest)) ;;; Commentary: ;;; @@ -232,3 +233,25 @@ false." `(digest (version 0) ,(->sexp digest))) + +(define (sexp->digest sexp) + "Return a digest deserialized from SEXP." + (define (->digest sexp) + (match sexp + (('x size (algorithm hash) _ ...) + (digest 'executable size (list algorithm hash))) + (('f size (algorithm hash) _ ...) + (digest 'regular size + (list algorithm (nix-base32-string->bytevector hash)))) + (('d entries ...) + (digest 'directory 0 + (map (match-lambda + ((name digest) + (digest-entry name (->digest digest)))) + entries))) + (('l target) + (digest 'symlink 0 target)))) + + (match sexp + (('digest ('version 0) sexp) + (->digest sexp)))) |