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(require racket/list
racket/function
racket/draw
racket/class
pollen/decode
pollen/tag
pollen/setup
pollen/core
net/uri-codec
txexpr
"dust.rkt")
(provide html-fn
html-fndef)
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(is-newthought? (first (get-elements block-xpr))))
(attr-set block-xpr 'class "pause-before")
block-xpr))
;; Links
;;
;; Private use:
(define link-urls (make-hash))
(define all-link-urls (make-hash))
;; Provided tag functions:
(define (html-link . args)
`(link& [[ref ,(format "~a" (first args))]] ,@(rest args)))
(define (html-url ref url)
(define page-path (hash-ref (current-metas) 'here-path))
(define page-link-urls (hash-ref! all-link-urls page-path make-hash))
(hash-set! link-urls (format "~a" ref) url) "")
(hash-set! page-link-urls (format "~a" ref) url) "")
;; Private use (by html-root):
(define (decode-link-urls tx)
(define page-path (hash-ref (current-metas) 'here-path))
(define page-link-urls (hash-ref! all-link-urls page-path make-hash))
(cond [(eq? (get-tag tx) 'link&)
(let* ([url-ref (attr-ref tx 'ref)]
[url (or (hash-ref link-urls url-ref #f)
[url (or (hash-ref page-link-urls url-ref #f)
(format "Missing reference: ~a" url-ref))])
`(a [[href ,url]] ,@(get-elements tx)))]
[else tx]))
;; Fast link to another article
(define html-xref
(case-lambda
[(title) `(a [[href ,(format "~aarticles/~a.html" web-root (normalize title))]
[class "xref"]]
(i ,title))]
[elems `(a [[href ,(format "~aarticles/~a.html" web-root (first elems))]
[class "xref"]]
,@(rest elems))]))
;; Footnotes
;;
;; Private use:
(define fn-names null)
(define fn-definitions (make-hash))
(define all-fn-names (make-hash))
(define all-fn-definitions (make-hash))
(define (fn-id x) (here-id (string-append x "_fn")))
(define (fndef-id x) (here-id (string-append x "_fndef")))
;; Provided footnote tag functions:
(define (html-fn . args)
(define name (format "~a" (first args)))
(define page-path (hash-ref (current-metas) 'here-path))
(define page-fn-names (cons name (hash-ref! all-fn-names page-path '())))
(hash-set! all-fn-names page-path page-fn-names)
(set! fn-names (cons name fn-names))
(let* ([def-anchorlink (string-append "#" (fndef-id name))]
[nth-ref (number->string (count (curry string=? name) fn-names))]
[nth-ref (number->string (count (curry string=? name) page-fn-names))]
[ref-id (string-append (fn-id name) nth-ref)]
[fn-number (+ 1 (index-of (remove-duplicates (reverse fn-names)) name))]
[fn-number (+ 1 (index-of (remove-duplicates (reverse page-fn-names)) name))]
[ref-text (format "(~a)" fn-number)])
(cond [(empty? (rest args)) `(sup (a [[href ,def-anchorlink] [id ,ref-id]] ,ref-text))]
[else `(span [[class "links-footnote"] [id ,ref-id]]
,@(rest args)
(sup (a [[href ,def-anchorlink]] ,ref-text)))])))
(define (html-fndef . elems)
(define page-path (hash-ref (current-metas) 'here-path))
(define page-fn-defs (hash-ref! all-fn-definitions page-path make-hash))
(hash-set! fn-definitions (format "~a" (first elems)) (rest elems)))
(hash-set! page-fn-defs (format "~a" (first elems)) (rest elems)))
;; Private use (by html-root)
(define (html-footnote-block)
(define page-path (hash-ref (current-metas) 'here-path))
(define page-fn-names (hash-ref! all-fn-names page-path '()))
(define page-fn-defs (hash-ref! all-fn-definitions page-path (make-hash)))
(define note-items
(for/list ([fn-name (in-list (remove-duplicates (reverse fn-names)))])
(let* ([definition-text (or (hash-ref fn-definitions fn-name #f)
(for/list ([fn-name (in-list (remove-duplicates (reverse page-fn-names)))])
(let* ([definition-text (or (hash-ref page-fn-defs fn-name #f)
'((i "Missing footnote definition!")))]
[backref-count (count (curry string=? fn-name) fn-names)]
[backref-count (count (curry string=? fn-name) page-fn-names)]
[backrefs (for/list ([fnref-num (in-range backref-count)])
`(a [[href ,(string-append "#"
(fn-id fn-name)
(format "~a" (+ 1 fnref-num)))]] "↩"))])
`(li [[id ,(fndef-id fn-name)]] ,@definition-text ,@backrefs))))
(cond [(null? note-items) ""]
[else `(section ((class "footnotes")) (hr) (ol ,@note-items))]))
(define (html-note-with-srcline attrs elems)
(txexpr 'note attrs (decode-hardwrapped-paragraphs elems)))
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