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show available snapshots on main page

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This commit is contained in:
Matthew Flatt 2013-07-06 10:46:27 -06:00
parent 28fc893c70
commit 580a6cd24a
1 changed files with 26 additions and 11 deletions
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23
pkgs/distro-build/manage-snapshots.rkt
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@ -32,18 +32,21 @@
(printf "Removing old \"current\" link\n") (printf "Removing old \"current\" link\n")
(delete-file link-file)) (delete-file link-file))
(define snapshots (for/list ([p (in-list (directory-list snapshots-dir))] (define (get-snapshots)
(for/list ([p (in-list (directory-list snapshots-dir))]
#:when (directory-exists? (build-path snapshots-dir p))) #:when (directory-exists? (build-path snapshots-dir p)))
(path-element->string p))) (path-element->string p)))
(define n (hash-ref config '#:max-snapshots 5)) (define n (hash-ref config '#:max-snapshots 5))
(when (n . < . (length snapshots))
(let ([snapshots (get-snapshots)])
(when (n . < . (length snapshots))
(define remove-snapshots (remove (define remove-snapshots (remove
current-snapshot current-snapshot
(list-tail (sort snapshots string>?) n))) (list-tail (sort snapshots string>?) n)))
(for ([s (in-list remove-snapshots)]) (for ([s (in-list remove-snapshots)])
(printf "Removing snapshot ~a\n" s) (printf "Removing snapshot ~a\n" s)
(delete-directory/files (build-path snapshots-dir s)))) (delete-directory/files (build-path snapshots-dir s)))))
(printf "Creating \"current\" link\n") (printf "Creating \"current\" link\n")
(make-file-or-directory-link current-snapshot link-file) (make-file-or-directory-link current-snapshot link-file)
@ -58,4 +61,16 @@
#:post-content `((p "Snapshot ID: " #:post-content `((p "Snapshot ID: "
(a ((href ,(string-append current-snapshot (a ((href ,(string-append current-snapshot
"/index.html"))) "/index.html")))
,current-snapshot)))) ,current-snapshot))
,@(let ([snapshots (get-snapshots)])
(if ((length snapshots) . < . 2)
null
`((div ([class "detail"])
"Other available snapshots:"
,@(for/list ([s (remove "current"
(remove current-snapshot
(sort snapshots string>?)))])
`(span ([class "detail"])
nbsp
(a ([href ,(string-append s "/index.html")])
,s)))))))))