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| author | Ludovic Courtès <ludovic.courtes@inria.fr> | 2017-07-21 14:50:16 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2017-07-21 17:03:25 +0200 |
| commit | 35eb77b09d957019b2437e7681bd88013d67d3cd (patch) | |
| tree | 0a4003c497926aaf49211f5bf50277a0551c537f /guix/store.scm | |
| parent | 33463986ba5093c7513c9dc7702a66929f504aa5 (diff) | |
store: Rewrite 'store-path-hash-part' to not use regexps.
* guix/store.scm (store-path-hash-part): Rewrite without using a
regexp. This speeds up 'guix substitute'.
Diffstat (limited to 'guix/store.scm')
| -rw-r--r-- | guix/store.scm | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/guix/store.scm b/guix/store.scm index b15da54852..2563d26fa0 100644 --- a/guix/store.scm +++ b/guix/store.scm @@ -1549,9 +1549,12 @@ valid inputs." (define (store-path-hash-part path) "Return the hash part of PATH as a base32 string, or #f if PATH is not a syntactically valid store path." - (let ((path-rx (store-regexp* (%store-prefix)))) - (and=> (regexp-exec path-rx path) - (cut match:substring <> 1)))) + (and (string-prefix? (%store-prefix) path) + (let ((base (string-drop path (+ 1 (string-length (%store-prefix)))))) + (and (> (string-length base) 33) + (let ((hash (string-take base 32))) + (and (string-every %nix-base32-charset hash) + hash)))))) (define (log-file store file) "Return the build log file for FILE, or #f if none could be found. FILE |