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;; -------------------------------------------------------------------------
(require pollen/core
pollen/pagetree
pollen/setup
pollen/file
net/uri-codec
file/sha1
gregor
txexpr
racket/list
racket/system
racket/string)
;; Provides common helper functions used throughout the project
(provide maybe-meta ; Select from (current-metas) or default value ("") if not available
maybe-attr ; Return an attribute’s value or a default ("") if not available
here-output-path
here-id
series-noun ; Retrieve noun-singular from current 'series meta, or ""
series-title ; Retrieve title of series in current 'series meta, or ""
series-pagenode
invalidate-series
make-tag-predicate
tx-strs
ymd->english
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(define default-authorname "Joel Dueck")
(define series-folder "series")
(define articles-folder "articles")
(define (default-title body-txprs)
(format "“~a…”" (first-words body-txprs 5)))
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[else (or (select-from-metas 'noun-singular series-pnode) "")]))
(define (series-title)
(define series-pnode (series-pagenode))
(case series-pnode
['|| ""] ; no series specified
[else (or (select-from-metas 'title series-pnode) "")]))
;; Generates a short ID for the current article
(define (here-id [suffix #f])
(define here-hash
(substring (bytes->hex-string (sha1-bytes (path->bytes (here-output-path)))) 0 8))
(cond [(list? suffix) (apply string-append here-hash suffix)]
[(string? suffix) (string-append here-hash suffix)]
[else here-hash]))
;; “Touches” the last-modified date on the current article’s series, if there is one
(define (invalidate-series)
(define series-name (maybe-meta 'series #f))
(when series-name
(define series-file (build-path (current-project-root)
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