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;; 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
series-metas-noun ; Retrieve noun-singular from current 'series meta, or ""
series-metas-title ; Retrieve title of series in current 'series meta, or ""
metas-series-pagenode
invalidate-series
make-tag-predicate
tx-strs
ymd->english
ymd->dateformat
default-authorname
default-title
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(drop-common-prefix (explode-path (current-project-root))
(explode-path (string->path (select-from-metas 'here-path (current-metas))))))
(->output-path (apply build-path rel-path-parts))]
[else (string->path ".")]))
;; Checks current-metas for a 'series meta and returns the pagenode of that series,
;; or '|| if no series is specified.
(define (series-pagenode)
(define (metas-series-pagenode)
(define maybe-series (or (select-from-metas 'series (current-metas)) ""))
(cond
[(non-empty-string? maybe-series)
(->pagenode (format "~a/~a.html" series-folder maybe-series))]
[else '||]))
(define (series-noun)
(define series-pnode (series-pagenode))
(define (series-metas-noun)
(define series-pnode (metas-series-pagenode))
(case series-pnode
['|| ""] ; no series specified
[else (or (select-from-metas 'noun-singular series-pnode) "")]))
(define (series-title)
(define series-pnode (series-pagenode))
(define (series-metas-title)
(define series-pnode (metas-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
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