diff options
Diffstat (limited to 'guix/scripts')
| -rw-r--r-- | guix/scripts/hash.scm | 82 |
1 files changed, 56 insertions, 26 deletions
diff --git a/guix/scripts/hash.scm b/guix/scripts/hash.scm index d3b293d02e..debe8b4068 100644 --- a/guix/scripts/hash.scm +++ b/guix/scripts/hash.scm @@ -39,13 +39,37 @@ ;;; +;;; Serializers +;;; + +(define* (nar-hash file #:optional + (algorithm (assoc-ref %default-options 'hash-algorithm)) + select?) + (let-values (((port get-hash) + (open-hash-port algorithm))) + (write-file file port #:select? select?) + (force-output port) + (get-hash))) + +(define* (default-hash file #:optional + (algorithm (assoc-ref %default-options 'hash-algorithm)) + select?) + (match file + ("-" (port-hash algorithm (current-input-port))) + (_ + (call-with-input-file file + (cute port-hash algorithm <>))))) + + +;;; ;;; Command-line options. ;;; (define %default-options ;; Alist of default option values. `((format . ,bytevector->nix-base32-string) - (hash-algorithm . ,(hash-algorithm sha256)))) + (hash-algorithm . ,(hash-algorithm sha256)) + (serializer . ,default-hash))) (define (show-help) (display (G_ "Usage: guix hash [OPTION] FILE @@ -61,7 +85,7 @@ and 'base16' ('hex' and 'hexadecimal' can be used as well).\n")) (format #t (G_ " -f, --format=FMT write the hash in the given format")) (format #t (G_ " - -r, --recursive compute the hash on FILE recursively")) + -S, --serializer=TYPE compute the hash on FILE according to TYPE serialization")) (newline) (display (G_ " -h, --help display this help and exit")) @@ -102,7 +126,24 @@ and 'base16' ('hex' and 'hexadecimal' can be used as well).\n")) (alist-delete 'format result)))) (option '(#\r "recursive") #f #f (lambda (opt name arg result) - (alist-cons 'recursive? #t result))) + (warning (G_ "'--recursive' is deprecated, \ +use '--serializer' instead~%")) + (alist-cons 'serializer nar-hash + (alist-delete 'serializer result)))) + (option '(#\S "serializer") #t #f + (lambda (opt name arg result) + (define serializer-proc + (match arg + ("none" + default-hash) + ("nar" + nar-hash) + (x + (leave (G_ "unsupported serializer type: ~a~%") + arg)))) + + (alist-cons 'serializer serializer-proc + (alist-delete 'serializer result)))) (option '(#\h "help") #f #f (lambda args (show-help) @@ -145,35 +186,24 @@ and 'base16' ('hex' and 'hexadecimal' can be used as well).\n")) (fmt (assq-ref opts 'format)) (select? (if (assq-ref opts 'exclude-vcs?) (negate vcs-file?) - (const #t)))) + (const #t))) + (algorithm (assoc-ref opts 'hash-algorithm)) + (serializer (assoc-ref opts 'serializer))) (define (file-hash file) ;; Compute the hash of FILE. - ;; Catch and gracefully report possible '&nar-error' conditions. - (if (assoc-ref opts 'recursive?) + ;; Catch and gracefully report possible error + (catch 'system-error + (lambda _ (with-error-handling - (let-values (((port get-hash) - (open-hash-port (assoc-ref opts 'hash-algorithm)))) - (write-file file port #:select? select?) - (force-output port) - (get-hash))) - (catch 'system-error - (lambda _ - (call-with-input-file file - (cute port-hash (assoc-ref opts 'hash-algorithm) - <>))) - (lambda args - (leave (G_ "~a ~a~%") - file - (strerror (system-error-errno args))))))) + (serializer file algorithm select?))) + (lambda args + (leave (G_ "~a ~a~%") + file + (strerror (system-error-errno args)))))) (define (formatted-hash thing) - (match thing - ("-" (with-error-handling - (fmt (port-hash (assoc-ref opts 'hash-algorithm) - (current-input-port))))) - (_ - (fmt (file-hash thing))))) + (fmt (file-hash thing))) (match args (() |