Hi Kieren,
I have extracted the latex-markup commands. At the end of the file is a
little example.
There are three ways to produce the latex source:
1. use a markup-list, which is converted with markup->tex: \xelatex { ... }
2. include a file with tex-content: \xelatexInclude #"<filename>"
3. use a string, probably read from a multiline-comment: \xelatexInclude
#text-variable
The example only uses the third method, because the first seemed to have
a bug and the second would need an extra file.
The latex code is included between \begin/\end{document}, so that the
markup command can calculate the dimensions for the resulting pdf. The
pdf is then split into eps files for each page, which are then included
in the markup-list.
Best, Jan-Peter
On 11.01.2014 21:19, Kieren MacMillan wrote:
> Hi Jan-Peter,
>
>> I usually use [xe]latex, to produce the text needed for a preface or
>> foreword. That way I can use latex input with its own commands - in this
>> case: \twocolumn - and use hyphenation.
>> It is integrated in https://github.com/jpvoigt/lalily (latex.scm,
>> latex-init.scm). If you are interested, I would extract it.
> YES YES YES
> In other words, yes, I am interested. =)
>
>> If you want format a markup-list - this is, what you are asking for - I
>> would recommend a markup-list-command. To make the n-column-markup-list
>> work correctly, you have to extract the available paper-height. I am
>> doing it in the mentioned xelatex-include command, but it often warns
>> about overflows of a few points - I can live with that, because the
>> overflow is minor, but it seems not to be trivial.
>> If you have the printable paper-height, you can build markups per page.
> If the [xe]latex doesn’t suit — or maybe even if it does — I’ll try building
> a “native” function.
>
> Thanks,
> Kieren.
\version "2.18.0"
#(use-modules
(ice-9 popen)
(ice-9 rdelim)
(ice-9 regex)
(scm framework-eps)
)
% this predicate is not public?
#(define (markup-function? x)
(and (markup-command-signature x)
(not (object-property x 'markup-list-command))))
% calculate available page-height
#(define-public (content-height layout props)
(let ((mm (ly:output-def-lookup layout 'mm))
(height (ly:output-def-lookup layout 'paper-height))
(perc (chain-assoc-get 'percent props 100))
(tm (ly:output-def-lookup layout 'top-margin))
(bm (ly:output-def-lookup layout 'bottom-margin))
(hom (ly:output-def-lookup layout 'oddHeaderMarkup))
(hem (ly:output-def-lookup layout 'evenHeaderMarkup))
(bom (ly:output-def-lookup layout 'oddFooterMarkup))
(bem (ly:output-def-lookup layout 'evenFooterMarkup)))
(define (mupheight mup)(if (markup? mup) (let ((y-ext (ly:stencil-extent (interpret-markup layout props mup) Y)))
(- (cdr y-ext)(car y-ext))) 0))
(/ (* (- height (+ tm bm (max (mupheight hom)(mupheight hem))
(max (mupheight hom)(mupheight hem)))) (/ perc 100)) mm)
))
#(define-public (glue-list lst glue)
"create string from list containing arbitrary objects"
(string-join (map (lambda (s) (format "~A" s)) lst) glue 'infix))
% read text from multiline comment %{ %}
#(define-public (read-comment port linenr)
(let ((rstart (make-regexp "^[^%]*%\\{(.*)$"))
(rend (make-regexp "^(.*)%}.*$")))
(define (collect lc status . lines)
(let ((line (read-line port 'concat)))
(if (string? line)
(cond
((< lc linenr)
(apply collect (+ lc 1) 0 lines))
((= status 0)
(let ((match (regexp-exec rstart line)))
(if (regexp-match? match)
(let ((i (match:start match 1)))
(apply collect (+ lc 1) 1 (append lines (list (substring line i))))
)
(apply collect (+ lc 1) 0 lines)
)))
((= status 1)
(let ((match (regexp-exec rend line)))
(if (regexp-match? match)
(let ((i (match:start match 1)))
(apply collect (+ lc 1) 2 (append lines (list (match:substring match 1))))
)
(apply collect (+ lc 1) 1 (append lines (list line)))
)))
(else (apply string-append lines))
)
(apply string-append lines))
))
(collect 1 0)
))
% scheme function to read comment: \readComment
readComment =
#(define-scheme-function (parser location)()
(let* ((fll (ly:input-file-line-char-column location))
(file (car fll))
(linenr (cadr fll))
(port (open-file file "r")))
(read-comment port linenr)
))
% produce tex source from markup
#(define-public (markup->tex mup . mprops)
(let ((conc (if (> (length mprops) 0) (car mprops) #f))
(layout (if (> (length mprops) 1) (cadr mprops) #f))
(props (if (> (length mprops) 2) (caddr mprops) '()))
(mup? (lambda (m)(or (string? m)(list? m)(markup? m))))
(result ""))
(cond ((string? mup) (set! result mup))
((null? mup) (set! result ""))
((and (pair? mup) (equal? (car mup) concat-markup))
(set! result (markup->tex (cdr mup) #t layout props)))
((and (pair? mup) (equal? (car mup) fromproperty-markup))
(set! result (markup->tex (chain-assoc-get (cadr mup) props "???") conc layout props)))
((and (pair? mup) (equal? (car mup) override-markup))
(set! result (markup->tex (cdr (cdr mup)) conc layout (cons (list (car (cdr mup))) props))))
((and (pair? mup) (equal? (car mup) page-ref-markup))
(set! result (let* ((table (if layout (ly:output-def-lookup layout 'label-page-table) '()))
(pg (assoc-get (car (cdr mup)) table)))
(if pg (format "~A" pg) (caddr (cdr mup)))) ))
((and (pair? mup)(markup-function? (car mup)))
(let ((proc (get-markup-producer (car mup))))
(if (procedure? proc)
(set! result (markup->tex (proc layout props (cdr mup))))
(for-each (lambda (m)(set! result (string-append result (if (or conc (string=? result "")) "" " ") (markup->tex m conc layout props))))
(filter mup? (cdr mup))))))
((list? mup)
(for-each (lambda (m)(set! result (string-append result (if (or conc (string=? result "")) "" " ") (markup->tex m conc layout props))))
(filter mup? mup)))
(else (ly:message "~A" mup)))
result))
% create eps-markup-list from pdf
#(define-public (tex-markup-list layout props pkgs cmd opts m)
(let* ((mm (ly:output-def-lookup layout 'mm))
(padstart (chain-assoc-get 'padstart props 2))
(padlength (* mm (chain-assoc-get 'padlength props 0)))
(scropts (chain-assoc-get 'scrartcl props ""))
(size (chain-assoc-get 'line-width props (ly:output-def-lookup layout 'line-width 10)))
; width of our box in mm
(width (let ((tw (chain-assoc-get 'tex-width props #f))) (if tw (begin (set! size (* tw mm)) tw) (/ size mm))))
; percent of page to use
(perc (chain-assoc-get 'percent props))
; height of our box in mm
(height (chain-assoc-get 'tex-height props (- (content-height layout props) (chain-assoc-get 'bottom-gap props (if perc 0 3)))))
; the text to fill into template.tex
(text (if (and (string? m) (file-exists? m)) (ly:gulp-file m) (markup->tex m #f #f props)))
; basename of working files
(basename (strftime (format "~A-%Y%m%d%H%M%S" cmd) (localtime (current-time))))
; result of each command
(result 0)
; stencil to return
(text-stencil empty-stencil)
(pages 0)
(epslist '()))
(define (readpipe port text)
(let ((line (read-line port)))
(if (not (eof-object? line))
(set! text (readpipe port (string-append (string-append text line) "\n"))))
text))
(define (cmd->string cmd)
(let* ((port (open-pipe cmd OPEN_READ))
(str (readpipe port ""))
(result (close-pipe port)))
(if (and (= 0 result)(> (string-length str) 0))
str "")))
(define (loop n callback)(let ((ret (list)))
(define (lp i)
(if (<= i n)
(begin
(set! ret (append ret (list (callback i))))
(lp (+ i 1)))))
(lp 1)
ret))
; write <basename>.tex
(let ((tex-src
(format "\\documentclass~A{scrartcl}
\\usepackage[paperwidth=~Amm,paperheight=~Amm,margin=~Amm]{geometry}
\\usepackage[~A]{babel}
~A
\\begin{document}
~A
\\end{document}
"
scropts width height
(chain-assoc-get 'tex-margin props 1)
(chain-assoc-get 'babel props "ngerman")
(glue-list pkgs "\n")
text)))
(with-output-to-file (format "~A.tex" basename) (lambda () (display tex-src)))
)
; produce pdf
(set! result (system (format "export LD_LIBRARY_PATH=\"\" ; ~A ~A \"~A.tex\"" cmd opts basename)))
; how many pages
(set! pages (let* ((r (make-regexp "Pages:\\s+([0-9]+)"))
(m (regexp-exec r (cmd->string (format "pdfinfo \"~A.pdf\"" basename)))))
(string->number (match:substring m 1))))
; add pages to markup-list
(loop pages (lambda (pag)(let ((pagname (format "~A-~A.eps" basename pag)))
; convert page to EPS
(set! result (system (format "pdftops -eps -f ~A -l ~A \"~A.pdf\" \"~A\"" pag pag basename pagname)))
; include EPS
(set! text-stencil (eps-file->stencil X size pagname))
(if (and (>= pag padstart)(> padlength 0))
(set! text-stencil (ly:stencil-combine-at-edge
(ly:make-stencil '() (cons 0 size) (cons 0 padlength))
Y -1 text-stencil 0)))
(set! epslist (append epslist (list text-stencil)))
)))
; remove working files
(system (format "rm -v \"~A\"*" basename))
; return eps-stencil
epslist
))
% pdflatex markup-list command
#(define-markup-list-command (pdflatex layout props m)(markup-list?)
(tex-markup-list layout props
`("\\usepackage[utf8]{inputenc}") "pdflatex" "-interaction=batchmode" m))
% pdflatex markup-list include command
#(define-markup-list-command (pdflatexInclude layout props m)(string?)
(tex-markup-list layout props
`("\\usepackage[utf8]{inputenc}") "pdflatex" "-interaction=batchmode" m))
% xelatex markup-list command
#(define-markup-list-command (xelatex layout props m)(markup-list?)
(let ((font-name (chain-assoc-get 'font-name props #f)))
(if (not (string? font-name))
(begin
(set! font-name (chain-assoc-get 'font-family props #f))
(if (string? font-name)
(ly:warning "using deprecated property 'font-family for '~A'" font-name)
(begin
(set! font-name (get-registry-val lalily:latex:default-font "DejaVu Serif"))
(ly:warning "no font-name defined! trying '~A' ..." font-name)
))
))
(tex-markup-list layout props
`("\\usepackage[T1]{fontenc}" "\\usepackage{fontspec}"
"\\defaultfontfeatures{Mapping=tex-text}"
,(format "\\setmainfont{~A}" font-name)
,@(chain-assoc-get 'packages props '())
)
"xelatex" "-interaction=batchmode" m)
))
% xelatex markup-list include command
#(define-markup-list-command (xelatexInclude layout props m)(string?)
(let ((font-name (chain-assoc-get 'font-name props #f)))
(if (not (string? font-name))
(begin
(set! font-name (chain-assoc-get 'font-family props #f))
(if (string? font-name)
(ly:warning "using deprecated property 'font-family for '~A'" font-name)
(begin
(set! font-name "DejaVu Serif")
(ly:warning "no font-name defined! trying '~A' ..." font-name)
))
))
(tex-markup-list layout props
`("\\usepackage[T1]{fontenc}" "\\usepackage{fontspec}"
"\\defaultfontfeatures{Mapping=tex-text}"
,(format "\\setmainfont{~A}" font-name)
,@(chain-assoc-get 'packages props '())
)
"xelatex" "-interaction=batchmode" m)))
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% example
text = \readComment
%{
\twocolumn{} \sloppy{}
It was a night to remember.
All of a sudden the door opened with dark noise and he, yes HE, came in.
We all were waiting for something, but we all didn't know what it was.
I was first to say "`Hello Sir"'.
-- \textit{silence} ---
It seemed like an invasion of something alien.
No one knows, if it is evil or just some kind of short intermission.
\today{}
%}
\markuplist {
\override-lines #'(font-name . "Century Schoolbook L")
\xelatexInclude #text
}
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