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Diffstat (limited to 'guix')
-rw-r--r--guix/nar.scm4
-rw-r--r--guix/scripts/hash.scm25
2 files changed, 23 insertions, 6 deletions
diff --git a/guix/nar.scm b/guix/nar.scm
index 89a71302e0..9ba6e4ce2c 100644
--- a/guix/nar.scm
+++ b/guix/nar.scm
@@ -195,8 +195,8 @@ sub-directories of FILE as needed."
(write-string "target" p)
(write-string (readlink f) p))
(else
- (raise (condition (&message (message "ENOSYS"))
- (&nar-error)))))
+ (raise (condition (&message (message "unsupported file type"))
+ (&nar-error (file f) (port port))))))
(write-string ")" p))))
(define (restore-file port file)
diff --git a/guix/scripts/hash.scm b/guix/scripts/hash.scm
index 4e66aa0f3e..ea8c2ada6b 100644
--- a/guix/scripts/hash.scm
+++ b/guix/scripts/hash.scm
@@ -20,12 +20,14 @@
(define-module (guix scripts hash)
#:use-module (guix base32)
#:use-module (guix hash)
+ #:use-module (guix nar)
#:use-module (guix ui)
#:use-module (guix utils)
#:use-module (rnrs io ports)
#:use-module (rnrs files)
#: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)
#:export (guix-hash))
@@ -43,10 +45,12 @@
(display (_ "Usage: guix hash [OPTION] FILE
Return the cryptographic hash of FILE.
-Supported formats: 'nix-base32' (default), 'base32', and 'base16'
-('hex' and 'hexadecimal' can be used as well).\n"))
+Supported formats: 'nix-base32' (default), 'base32', and 'base16' ('hex'
+and 'hexadecimal' can be used as well).\n"))
(format #t (_ "
-f, --format=FMT write the hash in the given format"))
+ (format #t (_ "
+ -r, --recursive compute the hash on FILE recursively"))
(newline)
(display (_ "
-h, --help display this help and exit"))
@@ -73,6 +77,9 @@ Supported formats: 'nix-base32' (default), 'base32', and 'base16'
(alist-cons 'format fmt-proc
(alist-delete 'format result))))
+ (option '(#\r "recursive") #f #f
+ (lambda (opt name arg result)
+ (alist-cons 'recursive? #t result)))
(option '(#\h "help") #f #f
(lambda args
@@ -107,12 +114,22 @@ Supported formats: 'nix-base32' (default), 'base32', and 'base16'
(reverse opts)))
(fmt (assq-ref opts 'format)))
+ (define (file-hash file)
+ ;; 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-sha256-port)))
+ (write-file file port)
+ (flush-output-port port)
+ (get-hash))
+ (call-with-input-file file port-sha256))))
+
(match args
((file)
(catch 'system-error
(lambda ()
- (format #t "~a~%"
- (fmt (call-with-input-file file port-sha256))))
+ (format #t "~a~%" (fmt (file-hash file))))
(lambda args
(leave (_ "~a~%")
(strerror (system-error-errno args))))))