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-rw-r--r--guix/build/download.scm36
1 files changed, 19 insertions, 17 deletions
diff --git a/guix/build/download.scm b/guix/build/download.scm
index d362fc1f26..4b7c53d2c6 100644
--- a/guix/build/download.scm
+++ b/guix/build/download.scm
@@ -101,27 +101,29 @@ width of the bar is BAR-WIDTH."
(define (string-pad-middle left right len)
"Combine LEFT and RIGHT with enough padding in the middle so that the
-resulting string has length at least LEN. This right justifies RIGHT."
- (string-append left
- (string-pad right (max 0 (- len (string-length left))))))
-
-(define (store-url-abbreviation url)
- "Return a friendlier version of URL for display."
- (let ((store-path (string-append (%store-directory) "/" (basename url))))
- ;; Take advantage of the implementation for store paths.
- (store-path-abbreviation store-path)))
+resulting string has length at least LEN (it may overflow). If the string
+does not overflow, the last char in RIGHT will be flush with the LEN
+column."
+ (let* ((total-used (+ (string-length left)
+ (string-length right)))
+ (num-spaces (max 1 (- len total-used)))
+ (padding (make-string num-spaces #\space)))
+ (string-append left padding right)))
(define* (store-path-abbreviation store-path #:optional (prefix-length 6))
- "Return an abbreviation of STORE-PATH for display, showing PREFIX-LENGTH
-characters of the hash."
- (let ((base (basename store-path)))
- (string-append (string-take base prefix-length)
- "…"
- (string-drop base 32))))
+ "If STORE-PATH is the file name of a store entry, return an abbreviation of
+STORE-PATH for display, showing PREFIX-LENGTH characters of the hash.
+Otherwise return STORE-PATH."
+ (if (string-prefix? (%store-directory) store-path)
+ (let ((base (basename store-path)))
+ (string-append (string-take base prefix-length)
+ "…"
+ (string-drop base 32)))
+ store-path))
(define* (progress-proc file size
#:optional (log-port (current-output-port))
- #:key (abbreviation identity))
+ #:key (abbreviation basename))
"Return a procedure to show the progress of FILE's download, which is SIZE
bytes long. The returned procedure is suitable for use as an argument to
`dump-port'. The progress report is written to LOG-PORT, with ABBREVIATION
@@ -519,7 +521,7 @@ on success."
(_ (list (string->uri url))))))
(define (fetch uri file)
- (format #t "starting download of `~a' from `~a'...~%"
+ (format #t "~%Starting download of ~a~%From ~a...~%"
file (uri->string uri))
(case (uri-scheme uri)
((http https)