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latex-render.rkt
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latex-render.rkt
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#lang at-exp racket/base
(require "core.rkt"
"latex-properties.rkt"
"private/render-utils.rkt"
racket/class
racket/runtime-path
racket/port
racket/string
racket/path
racket/list
setup/collects
file/convertible)
(provide render-mixin
make-render-part-mixin
extra-character-conversions)
(define current-table-mode (make-parameter #f))
(define rendering-tt (make-parameter #f))
(define show-link-page-numbers (make-parameter #f))
(define done-link-page-numbers (make-parameter #f))
(define disable-images (make-parameter #f))
(define escape-brackets (make-parameter #f))
(define suppress-newline-content (make-parameter #f))
(define-struct (toc-paragraph paragraph) ())
(define-runtime-path scribble-prefix-tex "scribble-prefix.tex")
(define-runtime-path scribble-packages-tex "scribble-packages.tex")
(define-runtime-path scribble-load-tex "scribble-load.tex")
(define-runtime-path scribble-tex "scribble.tex")
(define-runtime-path scribble-style-tex "scribble-style.tex")
(define-runtime-path scribble-load-replace-tex "scribble-load-replace.tex")
(define (color->string c)
(if (string? c)
c
(format "~a,~a,~a"
(/ (car c) 255.0)
(/ (cadr c) 255.0)
(/ (caddr c) 255.0))))
(define (make-render-part-mixin n)
(lambda (%)
(class (render-mixin %)
(define/override (render-part-depth) n)
(super-new))))
(define-runtime-path skull-tex "scribble-skull.tex")
(define skull-style (make-style #f (list (tex-addition skull-tex))))
(define extra-character-conversions (make-parameter (λ (c) #f)))
(define (render-mixin % #:image-mode [image-mode #f])
(class %
(super-new)
(inherit-field prefix-file style-file style-extra-files image-preferences)
(define/override (current-render-mode)
'(latex))
(inherit sort-image-requests)
(define image-reqs
(sort-image-requests (cond
[(eq? image-mode 'pdf)
'(pdf-bytes png@2x-bytes png-bytes)]
[(eq? image-mode 'ps)
'(eps-bytes)]
[else
'(pdf-bytes png@2x-bytes png-bytes eps-bytes)])
image-preferences))
(define/override (get-suffix) #".tex")
(inherit render-block
render-part
install-file
format-number
number-depth
extract-part-style-files
extract-version
extract-date
extract-authors
extract-pretitle)
(define/override (auto-extra-files? v) (latex-defaults? v))
(define/override (auto-extra-files-paths v) (latex-defaults-extra-files v))
(define/public (render-part-depth) #f)
(define/override (render-one d ri fn)
(define (maybe-replace file defaults)
(cond [(and defaults
(latex-defaults+replacements? defaults)
(hash-ref (latex-defaults+replacements-replacements defaults)
(path->string (file-name-from-path file))
#f)) =>
(lambda (v)
(cond
[(bytes? v) v]
[else (collects-relative->path v)]))]
[else file]))
(let* ([defaults (ormap (lambda (v) (and (latex-defaults? v) v))
(style-properties (part-style d)))]
[prefix-file (or prefix-file
(and defaults
(let ([v (latex-defaults-prefix defaults)])
(cond
[(bytes? v) v]
[else (collects-relative->path v)])))
scribble-prefix-tex)]
[style-file (or style-file
(and defaults
(let ([v (latex-defaults-style defaults)])
(cond
[(bytes? v) v]
[else (collects-relative->path v)])))
scribble-style-tex)]
[all-style-files (list* scribble-load-tex
(maybe-replace scribble-load-replace-tex defaults)
scribble-tex
(append (extract-part-style-files
d
ri
(lambda (p) #f)
tex-addition?
tex-addition-path)
(list style-file)
style-extra-files))]
[whole-doc? (not (render-part-depth))])
(if whole-doc?
(for ([style-file (in-list (cons prefix-file all-style-files))])
(if (bytes? style-file)
(display style-file)
(with-input-from-file style-file
(lambda ()
(copy-port (current-input-port) (current-output-port))))))
(for ([style-file (in-list all-style-files)])
(if (bytes? style-file)
(display style-file)
(install-file style-file))))
(when whole-doc?
(printf "\\begin{document}\n\\preDoc\n")
(when (part-title-content d)
(let ([vers (extract-version d)]
[date (extract-date d)]
[pres (extract-pretitle d)]
[auths (extract-authors d)])
(for ([pre (in-list pres)])
(printf "\n\n")
(do-render-paragraph pre d ri #t #f))
(when date (printf "\\date{~a}\n" date))
(printf "\\titleAnd~aVersionAnd~aAuthors{"
(if (equal? vers "") "Empty" "")
(if (null? auths) "Empty" ""))
(render-content (part-title-content d) d ri)
(printf "}{~a}{" vers)
(unless (null? auths)
(printf "\\SNumberOfAuthors{~a}" (length auths)))
(for/fold ([first? #t]) ([auth (in-list auths)])
(unless first? (printf "\\SAuthorSep{}"))
(do-render-paragraph auth d ri #t #f)
#f)
(printf "}\n"))))
(render-part d ri)
(when whole-doc?
(printf "\n\n\\postDoc\n\\end{document}\n"))))
(define/override (render-part-content d ri)
(let ([number (collected-info-number (part-collected-info d ri))]
[completely-hidden?
(and (part-style? d 'hidden)
(equal? "" (content->string (part-title-content d))))])
(when (and (part-title-content d)
(or (pair? number)
(let ([d (render-part-depth)])
(and d (positive? d)))))
(when (eq? (style-name (part-style d)) 'index)
(printf "\\twocolumn\n\\parskip=0pt\n\\addcontentsline{toc}{section}{Index}\n"))
(let ([pres (extract-pretitle d)])
(for ([pre (in-list pres)])
(printf "\n\n")
(do-render-paragraph pre d ri #t #f)))
(define depth (+ (number-depth number) (or (render-part-depth) 0)))
(define grouper? (part-style? d 'grouper))
(define (inc-section-number)
(printf "\\Sinc~a" (case depth
[(0 1) (if grouper? "part" "section")]
[(2) "subsection"]
[(3) "subsubsection"]
[(4) "subsubsubsection"]
[else "subsubsubsubsection"])))
(cond
[completely-hidden?
(printf "\n\n\\notitlesection")
(unless (part-style? d 'unnumbered)
(inc-section-number))]
[else
(define no-number? (and (pair? number)
(or (not (car number))
(equal? "" (car number))
((length number) . > . 3))))
(define no-toc? (part-style? d 'toc-hidden))
(define (show-number)
(when (and (part-style? d 'grouper)
(depth . > . 1)
(not no-number?))
(printf "~a\\quad{}" (car (format-number number null)))))
(printf "\n\n\\~a~a~a"
(case depth
[(0 1) (if grouper?
"partNewpage\n\n\\Spart"
"sectionNewpage\n\n\\Ssection")]
[(2) "Ssubsection"]
[(3) "Ssubsubsection"]
[(4) "Ssubsubsubsection"]
[else "Ssubsubsubsubsection"])
(if (and grouper?
(depth . > . 1))
"grouper"
"")
(if no-number?
(if no-toc?
"star"
"starx")
""))
(unless (and no-number? no-toc?)
(printf "{")
(show-number)
(parameterize ([disable-images #t]
[escape-brackets #t])
(render-content (part-title-content d) d ri))
(printf "}"))
(printf "{")
(show-number)
(render-content (part-title-content d) d ri)
(printf "}")
(when (and (part-style? d 'hidden-number)
(not (part-style? d 'unnumbered)))
(inc-section-number))
(when (eq? (style-name (part-style d)) 'index) (printf "\n\n"))]))
(for ([t (part-tags d)])
(printf "\\label{t:~a}~a" (t-encode (add-current-tag-prefix (tag-key t ri)))
(if completely-hidden? "" "\n\n")))
(render-flow (part-blocks d) d ri #f)
(for ([sec (part-parts d)]) (render-part sec ri))
(when (eq? (style-name (part-style d)) 'index) (printf "\\onecolumn\n\n"))
null))
(define/override (render-paragraph p part ri)
(do-render-paragraph p part ri #f #f))
(define/private (do-render-paragraph p part ri show-pre? as-box-mode)
(let* ([sn (style-name (paragraph-style p))]
[style (cond
[as-box-mode
(or
(ormap (lambda (a)
(and (box-mode? a)
((box-mode-selector as-box-mode) a)))
(style-properties
(paragraph-style p)))
"hbox")]
[(eq? sn 'author) "SAuthor"]
[(eq? sn 'pretitle) #f]
[(eq? sn 'wraps) #f]
[else sn])])
(unless (and (not show-pre?)
(or (eq? sn 'author)
(eq? sn 'pretitle)))
(let ([use-style? (string? style)])
(when use-style?
(printf "\\~a{" style))
(if (toc-paragraph? p)
(printf "\\newpage \\tableofcontents \\newpage")
(if as-box-mode
(parameterize ([suppress-newline-content #t])
(super render-paragraph p part ri))
(super render-paragraph p part ri)))
(when use-style? (printf "}")))))
null)
(define/private (no-noindent? p ri)
(cond
[(delayed-block? p)
(no-noindent? (delayed-block-blocks p ri) ri)]
[(traverse-block? p)
(no-noindent? (traverse-block-block p ri) ri)]
[else
(or
(memq 'never-indents
(style-properties
(cond
[(paragraph? p) (paragraph-style p)]
[(compound-paragraph? p) (compound-paragraph-style p)]
[(nested-flow? p) (nested-flow-style p)]
[(table? p) (table-style p)]
[(itemization? p) (itemization-style p)]
[else plain])))
(and (nested-flow? p)
(pair? (nested-flow-blocks p))
(no-noindent? (car (nested-flow-blocks p)) ri))
(and (compound-paragraph? p)
(pair? (compound-paragraph-blocks p))
(no-noindent? (car (compound-paragraph-blocks p)) ri)))]))
(define/override (render-intrapara-block p part ri first? last? starting-item?)
(unless first?
(printf "\n\n")
(unless (no-noindent? p ri)
(printf "\\noindent ")))
(super render-intrapara-block p part ri first? last? starting-item?))
(define/override (render-content e part ri)
(let ([part-label? (and (link-element? e)
(pair? (link-element-tag e))
(eq? 'part (car (link-element-tag e)))
(empty-content? (element-content e)))])
(parameterize ([done-link-page-numbers (or (done-link-page-numbers)
(link-element? e))])
(when (target-element? e)
(printf "\\label{t:~a}"
(t-encode (add-current-tag-prefix (tag-key (target-element-tag e) ri)))))
(when part-label?
(define-values (dest ext?) (resolve-get/ext? part ri (link-element-tag e)))
(let* ([number (and dest (vector-ref dest 2))]
[formatted-number (and dest
(list? number)
(format-number number null))]
[lbl? (and dest
(not ext?)
(not (show-link-page-numbers)))])
(printf "\\~aRef~a~a~a{"
(case (and dest (number-depth number))
[(0) "Book"]
[(1) (if (string? (car number)) "Part" "Chap")]
[else "Sec"])
(if lbl?
"Local"
"")
(if (let ([s (element-style e)])
(and (style? s) (memq 'uppercase (style-properties s))))
"UC"
"")
(if (null? formatted-number)
"UN"
""))
(when lbl?
(printf "t:~a}{" (t-encode (vector-ref dest 1))))
(unless (null? formatted-number)
(render-content
(if dest
(if (list? number)
formatted-number
(begin (eprintf "Internal tag error: ~s -> ~s\n"
(link-element-tag e)
dest)
'("!!!")))
(list "???"))
part ri)
(printf "}{"))))
(let* ([es (cond
[(element? e) (element-style e)]
[(multiarg-element? e) (multiarg-element-style e)]
[else #f])]
[style-name (if (style? es)
(style-name es)
es)]
[style (and (style? es) es)]
[check-render
(lambda ()
(when (render-element? e)
((render-element-render e) this part ri)))]
[core-render (lambda (e tt?)
(cond
[(and (image-element? e)
(not (disable-images)))
(check-render)
(let ([fn (install-file
(select-suffix
(collects-relative->path
(image-element-path e))
(image-element-suffixes e)
'(".pdf" ".ps" ".png")))])
(printf "\\includegraphics[scale=~a]{~a}"
(image-element-scale e) fn))]
[(and (convertible? e)
(not (disable-images))
(let ([ftag (lambda (v suffix [scale 1]) (and v (list v suffix scale)))]
[xxlist (lambda (v) (and v (list v #f #f #f #f #f #f #f #f)))]
[xlist (lambda (v) (and v (append v (list 0 0 0 0))))])
(for/or ([req (in-list image-reqs)])
(case req
[(eps-bytes)
(or (ftag (convert e 'eps-bytes+bounds8) ".ps")
(ftag (xlist (convert e 'eps-bytes+bounds)) ".ps")
(ftag (xxlist (convert e 'eps-bytes)) ".ps"))]
[(pdf-bytes)
(or (ftag (convert e 'pdf-bytes+bounds8) ".pdf")
(ftag (xlist (convert e 'pdf-bytes+bounds)) ".pdf")
(ftag (xxlist (convert e 'pdf-bytes)) ".pdf"))]
[(png@2x-bytes)
(or (ftag (convert e 'png@2x-bytes+bounds8) ".png" 0.5)
(ftag (xxlist (convert e 'png@2x-bytes)) ".png" 0.5))]
[(png-bytes)
(or (ftag (convert e 'png-bytes+bounds8) ".png")
(ftag (xxlist (convert e 'png-bytes)) ".png"))]))))
=> (lambda (bstr+info+suffix)
(check-render)
(let* ([bstr (list-ref (list-ref bstr+info+suffix 0) 0)]
[suffix (list-ref bstr+info+suffix 1)]
[scale (list-ref bstr+info+suffix 2)]
[height (list-ref (list-ref bstr+info+suffix 0) 2)]
[pad-left (or (list-ref (list-ref bstr+info+suffix 0) 5) 0)]
[pad-top (or (list-ref (list-ref bstr+info+suffix 0) 6) 0)]
[pad-right (or (list-ref (list-ref bstr+info+suffix 0) 7) 0)]
[pad-bottom (or (list-ref (list-ref bstr+info+suffix 0) 8) 0)]
[descent (and height
(- (+ (list-ref (list-ref bstr+info+suffix 0) 3)
(- (ceiling height) height))
pad-bottom))]
[width (let ([w (list-ref (list-ref bstr+info+suffix 0) 1)])
(and w (- w pad-left pad-right)))]
[fn (install-file (format "pict~a" suffix) bstr)])
(if descent
(printf "\\raisebox{-~abp}{\\makebox[~abp][l]{\\includegraphics[~atrim=~a ~a ~a ~a]{~a}}}"
descent
width
(if (= scale 1) "" (format "scale=~a," scale))
(/ pad-left scale) (/ pad-bottom scale) (/ pad-right scale) (/ pad-top scale)
fn)
(printf "\\includegraphics{~a}" fn))))]
[else
(parameterize ([rendering-tt (or tt? (rendering-tt))])
(super render-content e part ri))]))]
[wrap (lambda (e s tt?)
(when s (printf "\\~a{" s))
(core-render e tt?)
(when s (printf "}")))])
(define (finish tt?)
(cond
[(symbol? style-name)
(case style-name
[(italic) (wrap e "textit" tt?)]
[(bold) (wrap e "textbf" tt?)]
[(tt) (wrap e "Scribtexttt" #t)]
[(url) (wrap e "Snolinkurl" 'url)]
[(no-break) (wrap e "mbox" tt?)]
[(sf) (wrap e "textsf" #f)]
[(roman) (wrap e "textrm" #f)]
[(subscript) (wrap e "textsub" #f)]
[(superscript) (wrap e "textsuper" #f)]
[(smaller) (wrap e "Smaller" #f)]
[(larger) (wrap e "Larger" #f)]
[(hspace)
(check-render)
(let ([s (content->string e)])
(case (string-length s)
[(0) (void)]
[else
(printf "\\mbox{\\hphantom{\\Scribtexttt{~a}}}"
(regexp-replace* #rx"." s "x"))]))]
[(newline)
(check-render)
(unless (suppress-newline-content)
(printf "\\hspace*{\\fill}\\\\"))]
[else (error 'latex-render
"unrecognized style symbol: ~s" style)])]
[(string? style-name)
(let* ([v (if style (style-properties style) null)]
[tt? (cond
[(memq 'tt-chars v) #t]
[(memq 'exact-chars v) 'exact]
[else tt?])])
(cond
[(multiarg-element? e)
(check-render)
(printf "\\~a" style-name)
(if (null? (multiarg-element-contents e))
(printf "{}")
(for ([i (in-list (multiarg-element-contents e))])
(printf "{")
(parameterize ([rendering-tt (or tt? (rendering-tt))])
(render-content i part ri))
(printf "}")))]
[else
(wrap e style-name tt?)]))]
[(and (not style-name)
style
(memq 'exact-chars (style-properties style)))
(wrap e style-name 'exact)]
[else
(core-render e tt?)]))
(let loop ([l (if style (style-properties style) null)] [tt? #f])
(if (null? l)
(finish tt?)
(let ([v (car l)])
(cond
[(target-url? v)
(define target (let* ([s (let ([p (target-url-addr v)])
(if (path? p)
(path->string p)
p))]
[s (regexp-replace* #rx"\\\\" s "%5c")]
[s (regexp-replace* #rx"{" s "%7b")]
[s (regexp-replace* #rx"}" s "%7d")]
[s (regexp-replace* #rx"%" s "\\\\%")])
s))
(if (regexp-match? #rx"^[^#]*#[^#]*$" target)
;; work around a problem with `\href' as an
;; argument to other macros, such as `\marginpar':
(let ([l (string-split target "#")])
(printf "\\Shref{~a}{~a}{" (car l) (cadr l)))
;; normal:
(printf "\\href{~a}{" target))
(loop (cdr l) #t)
(printf "}")]
[(color-property? v)
(printf "\\intext~acolor{~a}{"
(if (string? (color-property-color v)) "" "rgb")
(color->string (color-property-color v)))
(loop (cdr l) tt?)
(printf "}")]
[(background-color-property? v)
(printf "\\in~acolorbox{~a}{"
(if (string? (background-color-property-color v)) "" "rgb")
(color->string (background-color-property-color v)))
(loop (cdr l) tt?)
(printf "}")]
[(command-extras? (car l))
(loop (cdr l) tt?)
(for ([l (in-list (command-extras-arguments (car l)))])
(printf "{~a}" l))]
[else (loop (cdr l) tt?)]))))))
(when part-label?
(printf "}"))
(when (and (link-element? e)
(show-link-page-numbers)
(not (done-link-page-numbers)))
(printf ", \\pageref{t:~a}"
(t-encode
(let ([v (resolve-get part ri (link-element-tag e))])
(and v (vector-ref v 1))))))
null))
(define/private (t-encode s)
(string-append*
(map (lambda (c)
(cond
[(and (or (char-alphabetic? c) (char-numeric? c))
((char->integer c) . < . 128))
(string c)]
[(char=? c #\space) "_"]
[else (format "x~x" (char->integer c))]))
(string->list (format "~s" s)))))
(define/override (render-flow p part ri starting-item? [wrap-each? #f])
(if (null? p)
null
(begin
(when wrap-each? (printf "{"))
(render-block (car p) part ri starting-item?)
(when wrap-each? (printf "}"))
(for ([b (in-list (cdr p))])
(if wrap-each?
(printf "%\n{")
(printf "\n\n"))
(render-block b part ri #f)
(when wrap-each? (printf "}")))
null)))
(define/override (render-table t part ri starting-item?)
(render-table* t part ri starting-item? "[t]"))
(define/private (render-table* t part ri starting-item? alignment)
(let* ([s-name (style-name (table-style t))]
[boxed? (eq? 'boxed s-name)]
[index? (eq? 'index s-name)]
[tableform
(cond [index? "list"]
[(eq? 'block s-name) "tabular"]
[(not (current-table-mode)) "bigtabular"]
[else "tabular"])]
[opt (cond [(equal? tableform "bigtabular") ""]
[(equal? tableform "tabular") alignment]
[else ""])]
[blockss (if index? (cddr (table-blockss t)) (table-blockss t))]
[cell-styless (extract-table-cell-styles t)]
[twidth (if (null? (table-blockss t))
1
(length (car (table-blockss t))))]
[single-column? (and (= 1 twidth)
(or (not s-name) (string? s-name))
(not (ormap (lambda (cell-styles)
(ormap (lambda (s)
(or (string? (style-name s))
(let ([l (style-properties s)])
(or (memq 'right l)
(memq 'center l)))))
cell-styles))
cell-styless))
(not (current-table-mode)))]
[inline?
(and (not single-column?)
(not boxed?)
(not index?)
(ormap (lambda (rs)
(ormap (lambda (cs) (style-name cs)) rs))
cell-styless)
(= 1 twidth)
(let ([m (current-table-mode)])
(and m
(equal? "bigtabular" (car m))
(= 1 (length (car (table-blockss (cadr m))))))))])
(if single-column?
(begin
(when (string? s-name)
(printf "\\begin{~a}" s-name))
(do-render-nested-flow
(make-nested-flow (make-style "SingleColumn" null) (map car (table-blockss t)))
part
ri
#t
#f)
(when (string? s-name)
(printf "\\end{~a}" s-name)))
(unless (or (null? blockss) (null? (car blockss)))
(define all-left-line?s
(if (null? cell-styless)
null
(for/list ([i (in-range (length (car cell-styless)))])
(for/and ([cell-styles (in-list cell-styless)])
(let ([cell-style (list-ref cell-styles i)])
(or (memq 'left-border (style-properties cell-style))
(memq 'border (style-properties cell-style))))))))
(define all-right-line?
(and (pair? cell-styless)
(let ([i (sub1 (length (car cell-styless)))])
(for/and ([cell-styles (in-list cell-styless)])
(let ([cell-style (list-ref cell-styles i)])
(or (memq 'right-border (style-properties cell-style))
(memq 'border (style-properties cell-style))))))))
(parameterize ([current-table-mode
(if inline? (current-table-mode) (list tableform t))]
[show-link-page-numbers
(or index? (show-link-page-numbers))])
(cond
[index? (printf "\\begin{list}{}{\\parsep=0pt \\itemsep=1pt \\leftmargin=2ex \\itemindent=-2ex}\n")]
[inline? (void)]
[single-column? (printf "\\begin{tabbing}\n")]
[else
(printf "~a~a\\begin{~a}~a{@{~a}~a}\n~a"
(if (and starting-item? (equal? tableform "bigtabular"))
"\\bigtableinlinecorrect"
"")
(if (string? s-name)
(format "\\begin{~a}" s-name)
"")
tableform
opt
(if (equal? tableform "bigtabular")
"\\bigtableleftpad"
"")
(string-append*
(let ([l
(map (lambda (i cell-style left-line?)
(format "~a~a@{}"
(if left-line? "|@{}" "")
(cond
[(memq 'center (style-properties cell-style)) "c"]
[(memq 'right (style-properties cell-style)) "r"]
[else "l"])))
(car blockss)
(car cell-styless)
all-left-line?s)])
(let ([l (if all-right-line? (append l '("|")) l)])
(if boxed? (cons "@{\\SBoxedLeft}" l) l))))
"")])
;; Helper to add row-separating lines:
(define (add-clines prev-styles next-styles)
(let loop ([pos 1] [start #f] [prev-styles prev-styles] [next-styles next-styles])
(cond
[(or (and prev-styles (null? prev-styles))
(and next-styles (null? next-styles)))
(when start
(if (= start 1)
(printf "\\hline ")
(printf "\\cline{~a-~a}" start (sub1 pos))))]
[else
(define prev-style (and prev-styles (car prev-styles)))
(define next-style (and next-styles (car next-styles)))
(define line? (or (and prev-style
(or (memq 'bottom-border (style-properties prev-style))
(memq 'border (style-properties prev-style))))
(and next-style
(or (memq 'top-border (style-properties next-style))
(memq 'border (style-properties next-style))))))
(when (and start (not line?))
(printf "\\cline{~a-~a}" start (sub1 pos)))
(loop (add1 pos) (and line? (or start pos))
(and prev-styles (cdr prev-styles))
(and next-styles (cdr next-styles)))])))
;; Loop through rows:
(let loop ([blockss blockss]
[cell-styless cell-styless]
[prev-styles #f]) ; for 'bottom-border styles
(let ([flows (car blockss)]
[cell-styles (car cell-styless)])
(unless index? (add-clines prev-styles cell-styles))
(let loop ([flows flows]
[cell-styles cell-styles]
[all-left-line?s all-left-line?s]
[need-left? #f])
(unless (null? flows)
(define (render-cell cnt)
(render-table-cell (car flows) part ri (/ twidth cnt) (car cell-styles) (not index?)))
(define right-line?
(cond
[index?
(printf "\n\\item ")
(render-cell 1)
#f]
[(eq? 'cont (car flows))
#f]
[else
(let ([cnt (let loop ([flows (cdr flows)][n 1])
(cond [(null? flows) n]
[(eq? (car flows) 'cont)
(loop (cdr flows) (add1 n))]
[else n]))])
(unless (= cnt 1) (printf "\\multicolumn{~a}{l}{" cnt))
(when (and (not (car all-left-line?s))
(or need-left?
(memq 'left-border (style-properties (car cell-styles)))
(memq 'border (style-properties (car cell-styles)))))
(printf "\\vline "))
(render-cell cnt)
(define right-line? (or (memq 'right-border (style-properties (list-ref cell-styles (sub1 cnt))))
(memq 'border (style-properties (list-ref cell-styles (sub1 cnt))))))
(when (and right-line? (null? (list-tail flows cnt)) (not all-right-line?))
(printf "\\vline "))
(unless (= cnt 1) (printf "}"))
(unless (null? (list-tail flows cnt))
(printf " &\n"))
right-line?)]))
(unless (null? (cdr flows)) (loop (cdr flows)
(cdr cell-styles)
(cdr all-left-line?s)
right-line?))))
(unless (or index?
(and (null? (cdr blockss))
(not (for/or ([cell-style (in-list cell-styles)])
(or (memq 'bottom-border (style-properties cell-style))
(memq 'border (style-properties cell-style)))))))
(printf " \\\\\n"))
(cond
[(null? (cdr blockss))
(unless index? (add-clines cell-styles #f))]
[else
(loop (cdr blockss) (cdr cell-styless) cell-styles)])))
(unless inline?
(printf "\\end{~a}~a"
tableform
(if (string? s-name)
(format "\\end{~a}" s-name)
"")))))))
null)
(define/private (render-table-cell p part ri twidth vstyle can-box?)
(let* ([top? (or (memq 'top (style-properties vstyle))
(memq 'baseline (style-properties vstyle)))]
[bottom? (and (not top?)
(memq 'bottom (style-properties vstyle)))]
[center? (and (not bottom?)
(not top?))]
[as-box? (and can-box? (boxable? p))])
(when (string? (style-name vstyle))
(printf "\\~a{" (style-name vstyle)))
(let ([minipage? (and can-box? (not as-box?))])
(when minipage?
(printf "\\begin{minipage}~a{~a\\linewidth}\n"
(cond
[top? "[t]"]
[center? "[c]"]
[else ""])
(/ 1.0 twidth)))
(cond
[(table? p)
(render-table* p part ri #f (cond
[top? "[t]"]
[center? "[c]"]
[else "[b]"]))]
[as-box?
(render-boxable-block p part ri (cond
[top? 't]
[center? 'c]
[else 'b]))]
[else
(render-block p part ri #f)])
(when minipage?
(printf " \\end{minipage}\n")))
(when (string? (style-name vstyle))
(printf "}"))
null))
(define/private (boxable? p)
(or (and (table? p)
(for* ([l (in-list (table-blockss p))]
[p (in-list l)])
(boxable? p)))
(and (nested-flow? p)
(or (and (= 1 (length (nested-flow-blocks p)))
(memq (style-name (nested-flow-style p))
'(code-inset vertical-inset)))
(and
(ormap box-mode? (style-properties (nested-flow-style p)))
(andmap (lambda (p) (boxable? p)) (nested-flow-blocks p)))))
(and (paragraph? p)
(or (not (style-name (paragraph-style p)))
(ormap box-mode? (style-properties (paragraph-style p)))))))
(define/private (render-boxable-block p part ri mode)
(cond
[(table? p)
(render-table* p part ri #f (format "[~a]" mode))]
[(nested-flow? p)
(do-render-nested-flow p part ri #f mode)]
[(paragraph? p)
(do-render-paragraph p part ri #f mode)]))
(define/private (box-mode-selector as-box-mode)
(case as-box-mode
[(t) box-mode-top-name]
[(c) box-mode-center-name]
[(b) box-mode-bottom-name]))
(define/override (render-itemization t part ri)
(let* ([style-str (let ([s (style-name (itemization-style t))])
(if (eq? s 'compact)
"compact"
s))]
[mode (or (and (string? style-str)
style-str)
(if (eq? 'ordered style-str)
"enumerate"
"itemize"))])
(printf "\\begin{~a}\\atItemizeStart" mode)
(for ([flow (in-list (itemization-blockss t))])
(printf "\n\n\\~a" (if (string? style-str)
(format "~aItem{" style-str)
"item "))
(render-flow flow part ri #t)
(when (string? style-str)
(printf "}")))
(printf "\\end{~a}" mode)
null))
(define/private (do-render-nested-flow t part ri single-column? as-box-mode)
(let* ([props (style-properties (nested-flow-style t))]
[kind (or (and as-box-mode
(or
(ormap (lambda (a)
(and (box-mode? a)
((box-mode-selector as-box-mode) a)))
props)
(case (style-name (nested-flow-style t))
[(code-inset) "SCodeInsetBox"]
[(vertical-inset) "SVInsetBox"]
[else (error "unexpected style for box mode")])))
(let ([s (style-name (nested-flow-style t))])
(or (and (string? s) s)
(and (eq? s 'inset) "SInsetFlow")
(and (eq? s 'code-inset) "SCodeFlow")
(and (eq? s 'vertical-inset) "SVInsetFlow")))
"Subflow")]
[multicommand? (memq 'multicommand props)]
[command? (or (and as-box-mode (not multicommand?))
(memq 'command props))])
(cond
[command? (printf "\\~a{" kind)]
[multicommand? (printf "\\~a" kind)]
[else (printf "\\begin{~a}" kind)])
(parameterize ([current-table-mode (if (or single-column?
(not (current-table-mode)))
(current-table-mode)
(list "nested-flow" t))])
(if as-box-mode
(for-each (lambda (p)
(when multicommand? (printf "{"))
(render-boxable-block p part ri as-box-mode)
(when multicommand? (printf "}")))
(nested-flow-blocks t))
(render-flow (nested-flow-blocks t) part ri #f multicommand?)))
(cond
[command? (printf "}")]
[multicommand? (void)]
[else (printf "\\end{~a}" kind)])
null))
(define/override (render-nested-flow t part ri starting-item?)
(do-render-nested-flow t part ri #f #f))
(define/override (render-compound-paragraph t part ri starting-item?)
(let ([kind (style-name (compound-paragraph-style t))]
[command? (memq 'command (style-properties (compound-paragraph-style t)))])
(when kind
(if command?
(printf "\\~a{" kind)
(printf "\\begin{~a}" kind)))
(super render-compound-paragraph t part ri starting-item?)
(when kind
(if command?
(printf "}")
(printf "\\end{~a}" kind)))
null))
(define/override (render-other i part ri)
(cond
[(string? i) (display-protected i)]
[(symbol? i)
(display (case i
[(nbsp) "~"]
[(mdash) "{---}"]
[(ndash) "{--}"]
[(ldquo) "{``}"]
[(rdquo) "{''}"]
[(rsquo) "{'}"]
[(lsquo) "{`}"]
[(prime) "$'$"]
[(rarr) "$\\rightarrow$"]
[(larr) "$\\leftarrow$"]
[(alpha) "$\\alpha$"]
[(infin) "$\\infty$"]
[(lang) "$\\langle$"]
[(rang) "$\\rangle$"]
[else (error 'render "unknown symbol element: ~e" i)]))]
[else (display-protected (format "~s" i))])
null)
(define/override (string-to-implicit-styles e)
(for/fold ([ses null]) ([ch (in-string e)])
(case ch
[(#\☠) (cons skull-style ses)]
[else ses])))
(define/private (display-protected s)
(define rtt (rendering-tt))
(define convs (extra-character-conversions))
(cond
[(eq? rtt 'exact)
(display s)]
[(eq? rtt 'url)
(for ([c (in-string s)])
(case c
[(#\%) (display "\\%")]
[(#\#) (display "\\#")]
[(#\\) (display "\\%5c")]
[(#\{) (display "\\%7b")]
[(#\}) (display "\\%7d")]
[else (display c)]))]
[else
;; Start by normalizing to "combined" form, so that Racket characters
;; are closer to Unicode characters (e.g., ä is one character, instead
;; of a combining character followed by "a").
(let ([s (string-normalize-nfc s)])
(let ([len (string-length s)])
(let loop ([i 0])
(unless (= i len)
(display
(let char-loop ([c (string-ref s i)])
(case c
[(#\\) (if (rendering-tt)
"{\\char`\\\\}"
"$\\backslash$")]
[(#\_) (if (rendering-tt)
"{\\char`\\_}"
"$\\_$")]
[(#\^) "{\\char'136}"]
[(#\>) (if (rendering-tt) "{\\Stttextmore}" "$>$")]
[(#\<) (if (rendering-tt) "{\\Stttextless}" "$<$")]
[(#\|) (if (rendering-tt) "{\\Stttextbar}" "$|$")]
[(#\-) "{-}"] ;; avoid en- or em-dash
[(#\`) "{\\textasciigrave}"]
[(#\') "{\\textquotesingle}"]
[(#\? #\! #\. #\:)
(if (rendering-tt) (format "{\\hbox{\\texttt{~a}}}" c) c)]
[(#\~) "$\\sim$"]
[(#\{ #\}) (if (rendering-tt)
(format "{\\char`\\~a}" c)
(format "\\~a" c))]
[(#\[ #\]) (if (escape-brackets)
(if (eq? c #\[)
"{\\SOpenSq}"
"{\\SCloseSq}")
c)]
[(#\# #\% #\& #\$) (format "\\~a" c)]
[(#\uA0) "~"] ; non-breaking space
[(#\uAD) "\\-"] ; soft hyphen; unfortunately, also disables auto-hyphen
[(#\uDF) "{\\ss}"]
[else