├── .gitignore
├── Humdrum.scm
├── LICENSE
├── MusicXML.scm
├── README.md
├── api.scm
├── export-base.ly
├── export-example.ly
├── export-example2.ly
├── lily.scm
├── package.cnf
└── package.ily
/.gitignore:
--------------------------------------------------------------------------------
1 | *.pdf
2 | *.ps
3 | *.midi
4 | *.mid
5 | *.log
6 | *.krn
7 | *.xml
8 | *~
9 |
--------------------------------------------------------------------------------
/Humdrum.scm:
--------------------------------------------------------------------------------
1 | ;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2 | ;% %
3 | ;% This file is part of openLilyLib, %
4 | ;% =========== %
5 | ;% the community library project for GNU LilyPond %
6 | ;% (https://github.com/openlilylib) %
7 | ;% ----------- %
8 | ;% %
9 | ;% Library: lilypond-export %
10 | ;% =============== %
11 | ;% %
12 | ;% export foreign file formats with LilyPond %
13 | ;% %
14 | ;% lilypond-export is free software: you can redistribute it and/or modify %
15 | ;% it under the terms of the GNU General Public License as published by %
16 | ;% the Free Software Foundation, either version 3 of the License, or %
17 | ;% (at your option) any later version. %
18 | ;% %
19 | ;% lilypond-export is distributed in the hope that it will be useful, %
20 | ;% but WITHOUT ANY WARRANTY; without even the implied warranty of %
21 | ;% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the %
22 | ;% GNU General Public License for more details. %
23 | ;% %
24 | ;% You should have received a copy of the GNU General Public License %
25 | ;% along with openLilyLib. If not, see . %
26 | ;% %
27 | ;% openLilyLib is maintained by Urs Liska, ul@openlilylib.org %
28 | ;% lilypond-export is maintained by Jan-Peter Voigt, jp.voigt@gmx.de %
29 | ;% %
30 | ;% Copyright Jan-Peter Voigt, Urs Liska, 2017 %
31 | ;% %
32 | ;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
33 |
34 | ;% TODO ties, slurs, grace notes
35 |
36 | (define-module (lilypond-export Humdrum))
37 |
38 | (use-modules
39 | (oll-core tree)
40 | (oll-core internal music-tools)
41 | (lilypond-export api)
42 | (lily))
43 |
44 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
45 | ;;; humdrum export
46 |
47 | (define-public (exportHumdrum musicexport filename . options)
48 | ;(display musicexport)
49 | (let ((grid (tree-create 'grid))
50 | (bar-list (sort (filter integer? (tree-get-keys musicexport '())) (lambda (a b) (< a b))) )
51 | (finaltime (tree-get musicexport '(finaltime))))
52 | (define namesU '(#\c #\d #\e #\f #\g #\a #\b))
53 | (define namesL '(#\C #\D #\E #\F #\G #\A #\B))
54 | ; serialize pitch in humdrum-format
55 | (define (hum-pitch p)
56 | (if (ly:pitch? p) ; rests don't have a pitch
57 | (let ((nn (ly:pitch-notename p))
58 | (oo (ly:pitch-octave p))
59 | (aa (ly:pitch-alteration p)))
60 | (define (hum-note ch oo)
61 | (if (or (= -1 oo)(= 0 oo))
62 | (cons ch '())
63 | (cons ch (hum-note ch (if (< oo 0) (1+ oo) (1- oo))))
64 | ))
65 | (string-append
66 | (list->string (hum-note (list-ref (if (< oo 0) namesL namesU) nn) oo))
67 | (cond
68 | ((= 1/2 aa) "#")
69 | ((= -1/2 aa) "-")
70 | (else "")
71 | ))) "r"))
72 | ; list OR returns true, if one of its elements is true
73 | (define (lor l) (or (car l) (if (> (length l) 1) (lor (cdr l)) #f)))
74 |
75 | ;(ly:message "Takte: ~A" bar-list)
76 |
77 | ; extract all staffs and all voices
78 |
79 | (tree-walk musicexport '()
80 | (lambda (path key value)
81 | (if (= 4 (length path))
82 | (let ((staff (caddr path))
83 | (voice (cadddr path)))
84 | (if (and (integer? staff)(integer? voice))
85 | (tree-set! grid (list staff voice) #t))
86 | )
87 | )))
88 | ;(tree-display grid)
89 |
90 | ; write krn-file
91 | (with-output-to-file filename
92 | (lambda ()
93 | (let ((staff-list (sort (tree-get-keys grid (list)) (lambda (a b) (< b a)))))
94 | ; eine Zeile im humdrum Format (mit allen splines)
95 | (define (spline-entry callback bar moment)
96 | (string-join
97 | (map
98 | (lambda (staff)
99 | (let ((voice-list (sort (tree-get-keys grid (list staff)) (lambda (a b) (> b a)))))
100 | (string-join
101 | (map
102 | (lambda (voice)
103 | ; callback wird übergeben und für jeden spline aufgerufen
104 | (callback bar moment staff voice)
105 | ) voice-list) "\t" 'infix)
106 | )) staff-list) "\t" 'infix)
107 | )
108 |
109 | ; init kern
110 | ;(display (spline-entry (lambda (b m s v) "**kern") #f #f))
111 | (display (string-join (map (lambda (s) "**kern") staff-list) "\t" 'infix))
112 | (newline)
113 | (display (string-join (map (lambda (s) (format "*staff~A" s)) staff-list) "\t" 'infix))
114 | (newline)
115 |
116 | ; we need to split splines to have multiple voices in one score
117 | (let ((vl (map (lambda (s) (length (tree-get-keys grid (list s)))) staff-list)))
118 | ; recursive function
119 | (define (spline-voice vl)
120 | ; every member with a voice-count > 1 is true
121 | (let ((spline-split (map (lambda (v) (> v 1)) vl)))
122 | ; create next line with extra spline ("*^")
123 | (define (explode li)
124 | (let ((i (car li))
125 | (l (cdr li)))
126 | (if (> (length l) 0)
127 | (set! l (explode l)))
128 | (if (> i 1)
129 | (cons 1 (cons (1- i) l))
130 | (cons 1 l)
131 | )
132 | ))
133 | (if (lor spline-split)
134 | (begin
135 | (display (string-join (map (lambda (split) (if split "*^" "*")) spline-split) "\t" 'infix))
136 | (newline)
137 | (spline-voice (explode vl))
138 | ))))
139 | (spline-voice vl)
140 | )
141 |
142 | ; für jeden Takt ...
143 | (for-each
144 | (lambda (bar)
145 | (let ((mom-list (sort (tree-get-keys musicexport (list bar)) ly:moment)))
146 | (display (spline-entry (lambda (b m s v) (format "=~A" b)) bar #f))
147 | (newline)
148 |
149 | ; für jeden Moment im Takt
150 | (for-each
151 | (lambda (moment)
152 |
153 | (let ((timesigs (map (lambda (s) (tree-get musicexport (list bar moment s 'timesig))) staff-list))
154 | (keysigs (map (lambda (s) (tree-get musicexport (list bar moment s 'keysig))) staff-list))
155 | (clefs (map (lambda (s)
156 | (let ((clefGlyph (tree-get musicexport (list bar moment s 'clefGlyph)))
157 | (clefPosition (tree-get musicexport (list bar moment s 'clefPosition))))
158 | (and (integer? clefPosition)(string? clefGlyph))
159 | )) staff-list)))
160 |
161 | (if (lor clefs)
162 | (begin
163 | (display
164 | (spline-entry
165 | (lambda (b m s v)
166 | (let ((clefGlyph (tree-get musicexport (list b m s 'clefGlyph)))
167 | (clefPosition (tree-get musicexport (list b m s 'clefPosition)))
168 | (clefTransposition (tree-get musicexport (list b m s 'clefTransposition))))
169 | (define (ottava ct)
170 | (cond
171 | ((and (> ct 0)(= 0 (modulo ct 7))) (string-append "^" (ottava (- ct 7))))
172 | ((and (< ct 0)(= 0 (modulo ct 7))) (string-append "v" (ottava (+ ct 7))))
173 | (else "")
174 | ))
175 | ;(ly:message "clef ~A ~A ~A" clefGlyph clefPosition clefTransposition)
176 | (if (and (integer? clefPosition)(string? clefGlyph))
177 | (format "*clef~A~A~A" (list-ref (string-split clefGlyph #\.) 1)
178 | (ottava clefTransposition) (+ 3 (/ clefPosition 2)))
179 | "*clefG2")
180 | )) bar moment))
181 | (newline)))
182 |
183 | (if (lor (map number-pair? timesigs))
184 | (let ((gtimesig (car (filter number-pair? timesigs))))
185 | (display
186 | (spline-entry
187 | (lambda (b m s v)
188 | (let ((meta (tree-get musicexport (list b m s 'timesig))))
189 | (if (number-pair? meta)
190 | (format "*M~A/~A"
191 | (car meta)(cdr meta))
192 | (format "*M~A/~A"
193 | (car gtimesig)(cdr gtimesig))
194 | ))) bar moment))
195 | (newline)))
196 |
197 | (if (lor (map (lambda (k) (music-is? k 'KeyChangeEvent)) keysigs))
198 | (begin
199 | (display
200 | (spline-entry
201 | (lambda (b m s v)
202 | (let ((meta (tree-get musicexport (list b m s 'keysig))))
203 | (if (music-is? meta 'KeyChangeEvent)
204 | (let ((pitch-alist (ly:music-property meta 'pitch-alist)))
205 | (define (acc p)
206 | (cond
207 | ((= 1/2 (cdr p)) (format "~A#" (list-ref namesU (car p))))
208 | ((= -1/2 (cdr p)) (format "~A-" (list-ref namesU (car p))))
209 | ((= 1 (cdr p)) (format "~A##" (list-ref namesU (car p))))
210 | ((= -1 (cdr p)) (format "~A--" (list-ref namesU (car p))))
211 | (else #f)))
212 | (format "*k[~A]" (string-join (filter (lambda (v) v) (map acc pitch-alist)) "" 'infix))
213 | )
214 | "*"))) bar moment))
215 | (newline)))
216 |
217 | (let ((mx (spline-entry
218 | (lambda (b m s v)
219 | (let ((music (tree-get musicexport (list b m s v))))
220 | (if (ly:music? music) "m" "")))
221 | bar moment)))
222 | (if (memq #\m (string->list mx)) ; only write lines containing music!
223 | (begin
224 | (display
225 | (spline-entry
226 | (lambda (b m s v)
227 | (let ((music (tree-get musicexport (list b m s v))))
228 | (if (ly:music? music) ; wenn Musik, setzen, sonst '.'
229 | (let ((dur (ly:music-property music 'duration))
230 | (tom (ly:music-property music 'name))
231 | (beam (tree-get musicexport (list b m s v 'beam))))
232 | ;(ly:message "scale ~A" (ly:duration-scale dur))
233 | (format "~A~A~A~A"
234 | (/ (expt 2 (ly:duration-log dur)) (ly:duration-scale dur))
235 | (cond
236 | ((= 1 (ly:duration-dot-count dur)) ".")
237 | ((= 2 (ly:duration-dot-count dur)) "..")
238 | (else ""))
239 | (cond
240 | ((eq? 'NoteEvent tom) (hum-pitch (ly:music-property music 'pitch)))
241 | ((eq? 'EventChord tom)
242 | (string-join
243 | (filter (lambda (v) v)
244 | (map
245 | (lambda (me) (if (eq? 'NoteEvent (ly:music-property me 'name))
246 | (hum-pitch (ly:music-property me 'pitch)) #f))
247 | (ly:music-property music 'elements))) " " 'infix))
248 | (else "r")
249 | )
250 | (cond
251 | ((eq? 'start beam) "L")
252 | ((eq? 'end beam) "J")
253 | (else "")
254 | )
255 | ))
256 | "."))) bar moment))
257 | (newline))))
258 | )) mom-list)
259 |
260 |
261 | )) bar-list)
262 |
263 | (if (equal? (ly:make-moment 0) (cdr finaltime))
264 | (begin
265 | (display (spline-entry (lambda (b m s v) (format "=~A" b)) (car finaltime) #f))(newline)
266 | ))
267 | (display (spline-entry (lambda (b m s v) "*-") #f #f))(newline)(newline)
268 | )
269 | ))
270 | ))
271 |
272 | (set-object-property! exportHumdrum 'file-suffix "krn")
273 |
274 |
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
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674 | .
675 |
--------------------------------------------------------------------------------
/MusicXML.scm:
--------------------------------------------------------------------------------
1 | ;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2 | ;% %
3 | ;% This file is part of openLilyLib, %
4 | ;% =========== %
5 | ;% the community library project for GNU LilyPond %
6 | ;% (https://github.com/openlilylib) %
7 | ;% ----------- %
8 | ;% %
9 | ;% Library: lilypond-export %
10 | ;% =============== %
11 | ;% %
12 | ;% export foreign file formats with LilyPond %
13 | ;% %
14 | ;% lilypond-export is free software: you can redistribute it and/or modify %
15 | ;% it under the terms of the GNU General Public License as published by %
16 | ;% the Free Software Foundation, either version 3 of the License, or %
17 | ;% (at your option) any later version. %
18 | ;% %
19 | ;% lilypond-export is distributed in the hope that it will be useful, %
20 | ;% but WITHOUT ANY WARRANTY; without even the implied warranty of %
21 | ;% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the %
22 | ;% GNU General Public License for more details. %
23 | ;% %
24 | ;% You should have received a copy of the GNU General Public License %
25 | ;% along with openLilyLib. If not, see . %
26 | ;% %
27 | ;% openLilyLib is maintained by Urs Liska, ul@openlilylib.org %
28 | ;% lilypond-export is maintained by Jan-Peter Voigt, jp.voigt@gmx.de %
29 | ;% %
30 | ;% Copyright Jan-Peter Voigt, Urs Liska, 2017 %
31 | ;% %
32 | ;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
33 |
34 | ;% TODO ties, slurs, grace notes
35 |
36 | (define-module (lilypond-export MusicXML))
37 |
38 | (use-modules
39 | (oll-core tree)
40 | (oll-core internal music-tools)
41 | (lilypond-export api)
42 | (lily))
43 |
44 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
45 | ;;; musicXML export
46 |
47 | (define (duration-factor dur)
48 | (*
49 | (/ 4 (expt 2 (ly:duration-log dur)))
50 | (duration-dot-factor (ly:duration-dot-count dur))
51 | (ly:duration-scale dur)
52 | ))
53 |
54 | (define-public (exportMusicXML musicexport filename . options)
55 | (let ((grid (tree-create 'grid))
56 | (bar-list (sort (filter integer? (tree-get-keys musicexport '())) (lambda (a b) (< a b))) )
57 | (finaltime (tree-get musicexport '(finaltime)))
58 | (division-dur (tree-get musicexport '(division-dur)))
59 | (divisions 1))
60 | (define notenames '(C D E F G A B))
61 | (define types '("breve" "breve" "whole" "half" "quarter" "eighth" "16th" "32nd" "64th" "128th"))
62 | (define (writeln x . args) (if (> (length args) 0) (apply format #t x args)(display x))(newline))
63 | (define (writepitch p)
64 | (if (ly:pitch? p)
65 | (let ((notename (list-ref notenames (ly:pitch-notename p)))
66 | (alter (* 2 (ly:pitch-alteration p)))
67 | (octave (+ 4 (ly:pitch-octave p))))
68 | (writeln "")
69 | (writeln "~A" notename)
70 | (if (not (= 0 alter)) (writeln "~A" alter))
71 | (writeln "~A" octave)
72 | (writeln "")
73 | ) (writeln "")))
74 | (define (writeduration dur moment)
75 | (if (ly:duration? dur)
76 | (let ((divlen (* (duration-factor dur) divisions))
77 | (divmom (* divisions 4 (ly:moment-main moment)))
78 | (addskew 0))
79 | (if (not (integer? divmom))
80 | (let* ((num (numerator divmom))
81 | (den (denominator divmom))
82 | (rest (modulo num den))
83 | (div (/ (- num rest) den)))
84 | ;(ly:message "mom: ~A ~A" (/ div rest) rest)
85 | (set! addskew (/ rest den))
86 | ))
87 | ;(ly:message "dur: ~A" (* divlen divisions))
88 | (if (not (integer? divlen))
89 | (let* ((len (inexact->exact divlen))
90 | (num (numerator len))
91 | (den (denominator len))
92 | (rest (modulo num den))
93 | (dur (/ (- num rest) den))
94 | (adddur (+ addskew (/ rest den))))
95 | (while (>= adddur 1)
96 | (set! dur (1+ dur))
97 | (set! adddur (1- adddur)))
98 | ;(ly:message "time: ~A:~A ... ~A" num den rest)
99 | (set! divlen dur)
100 | ))
101 | (writeln "~A" divlen)
102 | )))
103 | (define (writetype dur)
104 | (if (ly:duration? dur)
105 | (writeln "~A" (list-ref types (+ 2 (ly:duration-log dur))))
106 | ))
107 | (define (writedots d) (if (> d 0) (begin (writeln "")(writedots (1- d)))))
108 | (define (writetimemod dur)
109 | (if (and (ly:duration? dur) (not (integer? (ly:duration-scale dur))))
110 | (let ((num (numerator (ly:duration-scale dur)))
111 | (den (denominator (ly:duration-scale dur))))
112 | (writeln "")
113 | (writeln "~A" den)
114 | (writeln "~A" num)
115 | (writeln "")
116 | )))
117 | (define (writetuplet tuplet)
118 | (if (pair? tuplet)
119 | (begin
120 | (writeln "")
121 | (writeln "" (car tuplet))
122 | (writeln "")
123 | )))
124 | (define (acctext accidental)
125 | (case accidental
126 | ((0) "natural")
127 | ((-1/2) "flat")
128 | ((1/2) "sharp")
129 | ((-1) "flat-flat")
130 | ((1) "double-sharp")
131 | (else "")))
132 | (define (writemusic m staff voice . opts)
133 | (let ((dur (ly:music-property m 'duration))
134 | (chord (ly:assoc-get 'chord opts #f #f))
135 | (accidental (ly:assoc-get 'accidental opts #f #f))
136 | (beam (ly:assoc-get 'beam opts))
137 | (tuplet (ly:assoc-get 'tuplet opts))
138 | (lyrics (ly:assoc-get 'lyrics opts))
139 | (moment (ly:assoc-get 'moment opts)))
140 | ;(ly:message "-----> lyrics ~A" lyrics)
141 | (case (ly:music-property m 'name)
142 |
143 | ((NoteEvent)
144 | (writeln "")
145 | (if chord (writeln ""))
146 | (writepitch (ly:music-property m 'pitch))
147 | (writeduration dur moment)
148 |
149 | (writeln "~A" voice)
150 | (writetype dur)
151 | (if accidental
152 | (writeln "~A" (acctext accidental)))
153 | (writedots (if (ly:duration? dur) (ly:duration-dot-count dur) 0))
154 |
155 | (if (symbol? beam) (writeln "~A" beam))
156 | (writetimemod dur)
157 | (writetuplet tuplet)
158 | (if (and (not chord) (list? lyrics))
159 | (for-each
160 | (lambda (indexed-lyric)
161 | ;(ly:message "~A" indexed-lyric)
162 | (writeln "single~A"
163 | (+ 1 (list-ref indexed-lyric 1))
164 | (list-ref indexed-lyric 0))
165 | ) (map list lyrics (iota (length lyrics)))))
166 |
167 | (writeln ""))
168 |
169 | ((RestEvent)
170 | (writeln "")
171 | (writeln "")
172 | (writeduration dur moment)
173 |
174 | (writeln "~A" voice)
175 | (writetype dur)
176 | (writedots (if (ly:duration? dur) (ly:duration-dot-count dur) 0))
177 | (writetimemod dur)
178 | (writetuplet tuplet)
179 | (writeln ""))
180 |
181 | ((EventChord)
182 | (let* ((elements (ly:music-property m 'elements))
183 | (notes (filter (lambda (m) (music-is? m 'NoteEvent)) elements))
184 | (note-count (length notes))
185 | (artics (filter (lambda (m) (not (music-is? m 'NoteEvent))) elements)))
186 | (if (> note-count 0) (apply writemusic (car notes) staff voice opts))
187 | ;(set! opts (assoc-remove! opts 'beam))
188 | (for-each
189 | (lambda (n)
190 | (apply writemusic n staff voice (cons '(chord . #t) opts))
191 | ) (cdr notes))
192 | ))
193 |
194 | )))
195 |
196 | (if (ly:duration? division-dur) (set! divisions (/ 64 (duration-factor division-dur))))
197 | (ly:message "divisions: ~A" divisions)
198 |
199 | (tree-walk musicexport '()
200 | (lambda (path key value)
201 | (if (= 4 (length path))
202 | (let ((staff (caddr path))
203 | (voice (cadddr path)))
204 | (if (and (integer? staff)(integer? voice))
205 | (tree-set! grid (list staff voice) #t))
206 | )
207 | )))
208 |
209 | (let ((staff-list (sort (tree-get-keys grid '()) (lambda (a b) (< a b)))))
210 | (with-output-to-file filename
211 | (lambda ()
212 | (writeln "")
213 | (writeln "")
214 | (writeln "")
215 | (writeln "")
216 | (for-each
217 | (lambda (staff)
218 | (writeln "" staff)
219 | (writeln "Part ~A" staff)
220 | (writeln "")
221 | ) staff-list)
222 | (writeln "")
223 |
224 | (for-each
225 | (lambda (staff)
226 | (define (writeclef measure moment doattr)
227 | (let ((clefGlyph (tree-get musicexport (list measure moment staff 'clefGlyph)))
228 | (clefPosition (tree-get musicexport (list measure moment staff 'clefPosition)))
229 | (clefTransposition (tree-get musicexport (list measure moment staff 'clefTransposition))))
230 | (if (and (string? clefGlyph)(integer? clefPosition))
231 | (begin
232 | (if doattr (writeln ""))
233 | (writeln "~A~A~A"
234 | (list-ref (string-split clefGlyph #\.) 1)
235 | (+ 3 (/ clefPosition 2))
236 | (if (and (not (= 0 clefTransposition))(= 0 (modulo clefTransposition 7)))
237 | (format "~A" (/ clefTransposition 7))
238 | ""))
239 | (if doattr (writeln ""))
240 | ))))
241 |
242 | (writeln "" staff)
243 |
244 | (for-each
245 | (lambda (measure)
246 | (let ((backup 0)
247 | (beamcont #f)
248 | (moment-list (sort (filter ly:moment? (tree-get-keys musicexport (list measure))) ly:moment))
249 | (first-moment (ly:make-moment 0)))
250 |
251 | (if (> (length moment-list) 0) (set! first-moment (car moment-list)))
252 |
253 | (writeln "" measure)
254 |
255 | (writeln "")
256 | (writeln "~A" divisions) ; divisions by measure?
257 | (let ((meter (tree-get musicexport (list measure first-moment staff 'timesig))))
258 | (if (number-pair? meter)
259 | (writeln "" (car meter)(cdr meter))))
260 | (writeclef measure first-moment #f)
261 | (writeln "")
262 |
263 | (for-each
264 | (lambda (voice)
265 | (if (> backup 0) (writeln "~A" backup))
266 | (set! backup 0)
267 | (for-each
268 | (lambda (moment)
269 | (let ((music (tree-get musicexport (list measure moment staff voice))))
270 | (if (not (equal? moment (ly:make-moment 0)))
271 | (writeclef measure moment #t))
272 | (if (ly:music? music)
273 | (let ((dur (ly:music-property music 'duration))
274 | (beam (tree-get musicexport (list measure moment staff voice 'beam)))
275 | (accidental (tree-get musicexport (list measure moment staff voice 'accidental)))
276 | (tuplet (tree-get musicexport (list measure moment staff voice 'tuplet)))
277 | (lyrics (tree-get musicexport (list measure moment staff voice 'lyrics)))
278 | )
279 | (case beam
280 | ((start) (set! beamcont 'continue))
281 | ((end) (set! beamcont #f))
282 | )
283 |
284 | ; TODO staff grouping!
285 | (writemusic music 1 voice
286 | `(beam . ,(cond
287 | ((eq? 'start beam) 'begin)
288 | ((symbol? beam) beam)
289 | ((symbol? beamcont) beamcont)))
290 | `(accidental . ,accidental)
291 | `(moment . ,moment)
292 | `(tuplet . ,tuplet)
293 | `(lyrics . ,lyrics))
294 | (if (ly:duration? dur)
295 | (set! backup (+ backup (* (duration-factor dur) divisions))))
296 | ))
297 | )) moment-list)
298 | ) (sort (tree-get-keys grid (list staff)) (lambda (a b) (< a b))))
299 |
300 | (writeln "")
301 | )) (sort (filter integer? (tree-get-keys musicexport '())) (lambda (a b) (< a b))))
302 |
303 | (writeln "")
304 | ) staff-list)
305 |
306 | (writeln "")
307 | )))
308 | ))
309 |
310 | (set-object-property! exportMusicXML 'file-suffix "xml")
311 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # LilyPond Export
2 |
3 | In this repository I am creating an export-infrastructure for LilyPond.
4 | The files presented here are far from production-ready, but at least the functions provided here can
5 | create humdrum and musicXML for very simple scores.
6 |
7 | With the *(pre-alpha-stage)* OLL-module this file
8 |
9 | ```lilypond
10 | \version "2.19.82"
11 | \include "oll-core/package.ily"
12 | \loadPackage lilypond-export
13 |
14 | music = \new PianoStaff <<
15 | \new Staff <<
16 | { \time 3/4 \key es \major \set Timing.tempoWholesPerMinute = #(ly:make-moment 30) \partial 4 s4 | \repeat volta 2 { s2.*3 } }
17 | \relative <<
18 | { b'4 | c4. a8 g4 | g( bes) | \tuplet 3/2 { a c a~ } a | } \\
19 | { r4 | e8 f g fis e4 | es2 d4 | 8[ ] 4 }
20 | >>
21 | >>
22 | \new Staff {
23 | \time 3/4 \clef bass \key es \major
24 | \new Voice = "mel" \relative { g4 | c2 c4 | c g b | a2. | }
25 | }
26 | \new Lyrics \lyricsto "mel" { \lyricmode { la la le li lu la lo } }
27 | \new Lyrics \lyricsto "mel" { \lyricmode { ku ka ke ki ku ka ko } }
28 | >>
29 |
30 | % exporter can run without actually typesetting
31 | \exportMusic \default hum \music
32 |
33 | opts.exporter = #exportMusicXML
34 | % or as a layout extension that is added to the layout
35 | \score {
36 | \music
37 | \layout {
38 | \FileExport #opts
39 | }
40 | \midi {}
41 | }
42 | ```
43 |
44 | creates a humdrum file (.krn):
45 |
46 | ```humdrum
47 | **kern **kern
48 | *staff2 *staff1
49 | * *^
50 | =0 =0 =0
51 | *clefF4 *clefG2 *clefG2
52 | *M3/4 *M3/4 *M3/4
53 | *k[e-a-b-] *k[e-a-b-] *k[e-a-b-]
54 | 4G 4b 4r
55 | =1 =1 =1
56 | 2c 4.cc 8eL
57 | . . 8f
58 | . . 8g
59 | . 8a 8f#J
60 | 4c 4g 4e
61 | =2 =2 =2
62 | 4c 4g 2e-
63 | 4G 4b- .
64 | 4B 4g b 4d
65 | =3 =3 =3
66 | 2.A 6a 8c eL
67 | . . 8B d#
68 | . 6cc .
69 | . . 8B- dJ
70 | . 6a .
71 | . . 8A c#
72 | . 4a 4c f
73 | =4 =4 =4
74 | =4 =4 =4
75 | *- *- *-
76 |
77 | ```
78 |
79 | and an XML-file:
80 |
81 | ```xml
82 |
83 |
86 |
87 |
88 |
89 | Part 1
90 |
91 |
92 | Part 2
93 |
94 |
95 |
96 |
97 |
98 | 128
99 |
103 |
104 |
105 |
106 | B
107 | 4
108 |
109 | 128
110 | 1
111 | quarter
112 |
113 |
114 | 128
115 |
116 |
117 |
118 | 128
119 | 2
120 | quarter
121 |
122 |
123 |
124 |
125 | 128
126 |
127 |
128 |
129 | C
130 | 5
131 |
132 | 192
133 | 1
134 | quarter
135 |
136 |
137 |
138 |
139 | A
140 | 4
141 |
142 | 64
143 | 1
144 | eighth
145 | natural
146 |
147 |
148 |
149 | G
150 | 4
151 |
152 | 128
153 | 1
154 | quarter
155 |
156 |
157 | 384
158 |
159 |
160 |
161 | E
162 | 4
163 |
164 | 64
165 | 2
166 | eighth
167 | natural
168 | begin
169 |
170 |
171 |
172 | F
173 | 4
174 |
175 | 64
176 | 2
177 | eighth
178 | continue
179 |
180 |
181 |
182 | G
183 | 4
184 |
185 | 64
186 | 2
187 | eighth
188 | continue
189 |
190 |
191 |
192 | F
193 | 1
194 | 4
195 |
196 | 64
197 | 2
198 | eighth
199 | sharp
200 | end
201 |
202 |
203 |
204 | E
205 | 4
206 |
207 | 128
208 | 2
209 | quarter
210 |
211 |
212 |
213 |
214 | 128
215 |
216 |
217 |
218 | G
219 | 4
220 |
221 | 128
222 | 1
223 | quarter
224 |
225 |
226 |
227 | B
228 | -1
229 | 4
230 |
231 | 128
232 | 1
233 | quarter
234 |
235 |
236 |
237 | G
238 | 4
239 |
240 | 128
241 | 1
242 | quarter
243 |
244 |
245 |
246 |
247 | B
248 | 4
249 |
250 | 128
251 | 1
252 | quarter
253 | natural
254 |
255 |
256 | 384
257 |
258 |
259 |
260 | E
261 | -1
262 | 4
263 |
264 | 256
265 | 2
266 | half
267 |
268 |
269 |
270 | D
271 | 4
272 |
273 | 128
274 | 2
275 | quarter
276 |
277 |
278 |
279 |
280 | 128
281 |
282 |
283 |
284 | A
285 | 4
286 |
287 | 85
288 | 1
289 | quarter
290 | natural
291 |
292 | 3
293 | 2
294 |
295 |
296 |
297 |
298 |
299 |
300 |
301 | C
302 | 5
303 |
304 | 85
305 | 1
306 | quarter
307 |
308 | 3
309 | 2
310 |
311 |
312 |
313 |
314 | A
315 | 4
316 |
317 | 86
318 | 1
319 | quarter
320 |
321 | 3
322 | 2
323 |
324 |
325 |
326 |
327 |
328 |
329 |
330 | A
331 | 4
332 |
333 | 128
334 | 1
335 | quarter
336 |
337 |
338 | 384
339 |
340 |
341 |
342 | C
343 | 4
344 |
345 | 64
346 | 2
347 | eighth
348 | begin
349 |
350 |
351 |
352 |
353 | E
354 | 4
355 |
356 | 64
357 | 2
358 | eighth
359 | natural
360 | begin
361 |
362 |
363 |
364 | B
365 | 3
366 |
367 | 64
368 | 2
369 | eighth
370 | natural
371 | continue
372 |
373 |
374 |
375 |
376 | D
377 | 1
378 | 4
379 |
380 | 64
381 | 2
382 | eighth
383 | sharp
384 | continue
385 |
386 |
387 |
388 | B
389 | -1
390 | 3
391 |
392 | 64
393 | 2
394 | eighth
395 | flat
396 | end
397 |
398 |
399 |
400 |
401 | D
402 | 4
403 |
404 | 64
405 | 2
406 | eighth
407 | natural
408 | end
409 |
410 |
411 |
412 | A
413 | 3
414 |
415 | 64
416 | 2
417 | eighth
418 | natural
419 |
420 |
421 |
422 |
423 | C
424 | 1
425 | 4
426 |
427 | 64
428 | 2
429 | eighth
430 | sharp
431 |
432 |
433 |
434 | C
435 | 4
436 |
437 | 128
438 | 2
439 | quarter
440 | natural
441 |
442 |
443 |
444 |
445 | F
446 | 4
447 |
448 | 128
449 | 2
450 | quarter
451 |
452 |
453 |
454 |
455 | 128
456 |
457 |
458 |
459 |
460 |
461 |
462 | 128
463 |
467 |
468 | F
469 | 4
470 |
471 |
472 |
473 |
474 | F
475 | 4
476 |
477 |
478 |
479 |
480 | G
481 | 3
482 |
483 | 128
484 | 2
485 | quarter
486 |
487 | single
488 | la
489 |
490 |
491 | single
492 | ku
493 |
494 |
495 |
496 |
497 |
498 | 128
499 |
500 |
501 |
502 | C
503 | 4
504 |
505 | 256
506 | 2
507 | half
508 |
509 | single
510 | la
511 |
512 |
513 | single
514 | ka
515 |
516 |
517 |
518 |
519 | C
520 | 4
521 |
522 | 128
523 | 2
524 | quarter
525 |
526 | single
527 | le
528 |
529 |
530 | single
531 | ke
532 |
533 |
534 |
535 |
536 |
537 | 128
538 |
539 |
540 |
541 | C
542 | 4
543 |
544 | 128
545 | 2
546 | quarter
547 |
548 | single
549 | li
550 |
551 |
552 | single
553 | ki
554 |
555 |
556 |
557 |
558 | G
559 | 3
560 |
561 | 128
562 | 2
563 | quarter
564 |
565 | single
566 | lu
567 |
568 |
569 | single
570 | ku
571 |
572 |
573 |
574 |
575 | B
576 | 3
577 |
578 | 128
579 | 2
580 | quarter
581 | natural
582 |
583 | single
584 | la
585 |
586 |
587 | single
588 | ka
589 |
590 |
591 |
592 |
593 |
594 | 128
595 |
596 |
597 |
598 | A
599 | 3
600 |
601 | 384
602 | 2
603 | half
604 |
605 | natural
606 |
607 | single
608 | lo
609 |
610 |
611 | single
612 | ko
613 |
614 |
615 |
616 |
617 |
618 | 128
619 |
620 |
621 |
622 |
623 | ```
624 |
625 |
626 |
--------------------------------------------------------------------------------
/api.scm:
--------------------------------------------------------------------------------
1 | ; -*- master: export-example.ly;
2 | ;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 | ;% %
4 | ;% This file is part of openLilyLib, %
5 | ;% =========== %
6 | ;% the community library project for GNU LilyPond %
7 | ;% (https://github.com/openlilylib) %
8 | ;% ----------- %
9 | ;% %
10 | ;% Library: lilypond-export %
11 | ;% =============== %
12 | ;% %
13 | ;% export foreign file formats with LilyPond %
14 | ;% %
15 | ;% lilypond-export is free software: you can redistribute it and/or modify %
16 | ;% it under the terms of the GNU General Public License as published by %
17 | ;% the Free Software Foundation, either version 3 of the License, or %
18 | ;% (at your option) any later version. %
19 | ;% %
20 | ;% lilypond-export is distributed in the hope that it will be useful, %
21 | ;% but WITHOUT ANY WARRANTY; without even the implied warranty of %
22 | ;% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the %
23 | ;% GNU General Public License for more details. %
24 | ;% %
25 | ;% You should have received a copy of the GNU General Public License %
26 | ;% along with openLilyLib. If not, see . %
27 | ;% %
28 | ;% openLilyLib is maintained by Urs Liska, ul@openlilylib.org %
29 | ;% lilypond-export is maintained by Jan-Peter Voigt, jp.voigt@gmx.de %
30 | ;% %
31 | ;% Copyright Jan-Peter Voigt, Urs Liska, 2017 %
32 | ;% %
33 | ;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
34 |
35 | ;% TODO ties, slurs, grace notes, bar lines
36 |
37 | (define-module (lilypond-export api))
38 |
39 | (use-modules
40 | (oll-core tree)
41 | (oll-core internal music-tools)
42 | (lilypond-export lily)
43 | (lilypond-export MusicXML)
44 | (lilypond-export Humdrum)
45 | (lily))
46 |
47 | (re-export exportLilyPond)
48 | (re-export exportMusicXML)
49 | (re-export exportHumdrum)
50 |
51 | ; create duration from moment
52 | (define-public (moment->duration mom)
53 | (ly:make-duration
54 | (ly:intlog2 (ly:moment-main-denominator mom)) 0
55 | (ly:moment-main-numerator mom)
56 | ))
57 |
58 | ; names of used context-properties
59 | (define ctprop::voice-context-count 'voice-context-count)
60 | (define ctprop::staff-context-count 'staff-context-count)
61 | (define ctprop::lyric-context-count 'lyric-context-count)
62 | (define ctprop::voice-id 'voice-id)
63 | (define ctprop::staff-id 'staff-id)
64 | (define ctprop::lyric-id 'lyric-id)
65 | (define ctprop::music-export 'music-export)
66 | (define ctprop::export-step 'music-export-step)
67 | (define ctprop::lyrics 'lyric-events)
68 |
69 | ; The use of '@@' indicates bad code style! But how else can we add context properties in external code?
70 | ; add used context-properties
71 | ((@@ (lily) translator-property-description) ctprop::voice-context-count integer? "Count voice contexts")
72 | ((@@ (lily) translator-property-description) ctprop::staff-context-count integer? "Count staff contexts")
73 | ((@@ (lily) translator-property-description) ctprop::lyric-context-count integer? "Count staff contexts")
74 | ((@@ (lily) translator-property-description) ctprop::voice-id integer? "Voice ID")
75 | ((@@ (lily) translator-property-description) ctprop::staff-id integer? "Staff ID")
76 | ((@@ (lily) translator-property-description) ctprop::lyric-id integer? "Staff ID")
77 | ((@@ (lily) translator-property-description) ctprop::music-export tree? "Music export store")
78 | ((@@ (lily) translator-property-description) ctprop::export-step tree? "Music export step store")
79 | ((@@ (lily) translator-property-description) ctprop::lyrics list? "current lyric events")
80 |
81 | ; combine note-events to event-chord
82 | (define (combine-notes current music)
83 | (define (artic-type music) (ly:music-property music 'articulation-type))
84 | (if (not (equal? (ly:music-length current)(ly:music-length music)))
85 | (ly:warning "durations differ: ~A ~A" current music))
86 | (cond
87 | ; only take rests, if there is no music
88 | ((music-is? music 'RestEvent) ; (and (ly:music? current)(eq? 'RestEvent (ly:music-property music 'name)))
89 | (if (ly:music? current) current music))
90 | ; if we already have an event-chord, add note-event
91 | ((music-is? current 'EventChord) ;(and (ly:music? current)(eq? 'EventChord (ly:music-property current 'name)))
92 | (let* ((elements (ly:music-property current 'elements))
93 | (artics (ly:music-property music 'articulations))
94 | (an1 (filter symbol? (map artic-type elements))))
95 | ; reset articulations and place them in the event-chord
96 | (ly:music-set-property! music 'articulations '())
97 | ; add element and alement articulations to event-chord
98 | (ly:music-set-property! current 'elements `(,@elements ,music ,@artics))
99 | current
100 | ))
101 | ; if current is rest, override it with music
102 | ((music-is? current 'RestEvent) ; (and (ly:music? current)(eq? 'RestEvent (ly:music-property current 'name)))
103 | music)
104 | ; create event-chord with two note-events
105 | ((ly:music? current)
106 | (let* ((artics1 (ly:music-property current 'articulations))
107 | (artics2 (ly:music-property music 'articulations))
108 | (an1 (filter symbol? (map artic-type artics1))))
109 | (ly:music-set-property! current 'articulations '())
110 | (ly:music-set-property! music 'articulations '())
111 | (make-music 'EventChord 'elements
112 | `(,current ,music ,@artics1
113 | ,@(filter (lambda (v) (not (memv (ly:music-property v 'articulation-type) an1))) artics2))
114 | 'duration (ly:music-property music 'duration)
115 | )))
116 | (else music))
117 | )
118 |
119 |
120 | ; engraver to collect all note- and rest-events
121 | (define-public collectVoice
122 | (lambda (context)
123 | (let ((id 0)
124 | ; beam- and tuplet-closing is always a step late ...
125 | (beam-time '(#f . #f))
126 | (tuplet-time '(#f . #f)))
127 |
128 | ; search for music-cause of grob
129 | (define (grob-cause grob)
130 | (cond
131 | ((ly:grob? grob) (grob-cause (ly:grob-property grob 'cause)))
132 | ((ly:music? grob) grob)
133 | ((ly:stream-event? grob) (grob-cause (ly:event-property grob 'music-cause)))
134 | (else #f)
135 | ))
136 |
137 |
138 | (make-engraver
139 | ((initialize trans)
140 | (let* ((staff-context (ly:context-find context 'Staff))
141 | (stvc (ly:context-property staff-context ctprop::voice-context-count 0))) ; How many voices are in the staff
142 |
143 | (set! stvc (1+ stvc))
144 | (ly:context-set-property! staff-context ctprop::voice-context-count stvc)
145 | (set! id stvc)
146 | (ly:context-set-property! context ctprop::voice-id id)
147 |
148 | (ly:message "init Voice ~A/~A (~A)" (ly:context-property context ctprop::staff-id) (ly:context-id context) id)
149 |
150 | ; export tree for one timestep
151 | (ly:context-set-property! context ctprop::export-step (tree-create 'timestep))
152 | ))
153 |
154 | ((start-translation-timestep trans)
155 | ; clear lyrics
156 | (ly:context-unset-property context ctprop::lyrics)
157 | ; export tree for this timestep
158 | (if (not (tree? (ly:context-property context ctprop::export-step)))
159 | (ly:context-set-property! context ctprop::export-step (tree-create 'timestep))))
160 |
161 | ((stop-translation-timestep trans)
162 | (let ((step (ly:context-property context ctprop::export-step)) ; export tree for this timestep
163 | (musicexport (ly:context-property context ctprop::music-export)) ; global export tree
164 | (bar (ly:context-property context 'currentBarNumber 1)) ; current bar number
165 | (moment (ly:context-property context 'measurePosition (ly:make-moment 0)))) ; current measure position
166 |
167 | (ly:context-unset-property context ctprop::export-step)
168 |
169 | ; detect upbeat (partial)
170 | (if (ly:moment moment (ly:make-moment 0))
171 | (set! bar (1- bar)))
172 |
173 | ; if we have a tree for this timestep (why should'nt we?)
174 | (if (tree? step)
175 | ; copy to global export tree
176 | (tree-walk step '()
177 | (lambda (path xkey value) ; path in tree, key of current node, value of current node
178 | (tree-set! musicexport `(,bar ,moment ,@path) value)
179 | ) '(empty . #f)))
180 | ))
181 |
182 | (listeners
183 | ((StreamEvent engraver event) ; listen to any event
184 | (let ((musicexport (ly:context-property context ctprop::music-export))
185 | (musicstep (ly:context-property context ctprop::export-step))
186 | (music (ly:event-property event 'music-cause))
187 | (bar (ly:context-property context 'currentBarNumber 1))
188 | (moment (ly:context-property context 'measurePosition (ly:make-moment 0))))
189 | ; notes and rests are stored in the tree under measeure/moment/staff/voice
190 | ; TODO MultiMeasureRests, Upbeats
191 | (if (and (ly:music? music) (= 0 (ly:moment-grace moment))) ; Drop grace notes!
192 | (let* ((path (list bar moment
193 | (ly:context-property context ctprop::staff-id)
194 | (ly:context-property context ctprop::voice-id)))
195 | (steppath (cddr path))
196 | (notes (tree-get musicstep steppath)))
197 | (ly:music-set-property! music 'timestamp (cons bar moment))
198 | (cond
199 | ((memq (ly:music-property music 'name) '(NoteEvent RestEvent))
200 | (let ((dur (ly:event-property event 'duration)))
201 |
202 | ; track shortest duration (musicXML/MEI divisions)
203 | (let ((shortdur (tree-get musicexport '(division-dur))))
204 | (if (and (ly:duration? dur)(or (not shortdur) (ly:duration dur shortdur)))
205 | (tree-set! musicexport '(division-dur) dur))
206 | )
207 |
208 | ; if we already have a note, combine it to a eventchord
209 | (if (ly:music? notes) (set! music (combine-notes notes music)))
210 |
211 | ; tuplets
212 | (let ((scale (ly:duration-scale dur)))
213 | (if (not (integer? scale))
214 | (let ((num (numerator scale))
215 | (den (denominator scale)))
216 | ;(ly:message "scale ~A/~A" num den)
217 | (tree-set! musicstep `(,@steppath scale) scale)
218 | )))
219 |
220 | ; remember current time
221 | (ly:event-set-property! event 'timestamp (cons bar moment))
222 |
223 | ; track time for beams
224 | (if (not (and
225 | (pair? (cdr beam-time))
226 | (equal? (cadr beam-time) bar)
227 | (equal? (cddr beam-time) moment)))
228 | (set! beam-time (cons (cdr beam-time) (cons bar moment))))
229 |
230 | ; track time for tuplets
231 | (if (not (and
232 | (pair? (cdr tuplet-time))
233 | (equal? (cadr tuplet-time) bar)
234 | (equal? (cddr tuplet-time) moment)))
235 | (set! tuplet-time (cons (cdr tuplet-time) (cons bar moment))))
236 |
237 | ; store music
238 | (tree-set! musicstep steppath music)))
239 |
240 | ((eq? (ly:music-property music 'name) 'TupletSpanEvent)
241 | (let ((timestamp (ly:music-property music 'timestamp))
242 | (num (ly:music-property music 'numerator))
243 | (den (ly:music-property music 'denominator))
244 | (dir (ly:music-property music 'span-direction)))
245 | ;(ly:message "tuplet ~A:~A ~A ~A ~A" num den timestamp (cons bar moment) dir)
246 |
247 | (cond
248 | ((and (= -1 dir)(integer? num)(integer? den))
249 | (tree-set! musicstep `(,@steppath tuplet) `(start . ,(/ num den))))
250 |
251 | ((= 1 dir)
252 | (let ((tup-time (cdr tuplet-time)))
253 | ;(ly:message "tuplet time ~A ~A" tup-time (cons bar moment))
254 |
255 | (tree-set! musicexport `(,(car tup-time) ,(cdr tup-time) ,@steppath tuplet) `(stop . #f))
256 | ))
257 | )))
258 | )))
259 | ))
260 | )
261 |
262 | (acknowledgers
263 | ; store accidental
264 | ((accidental-interface engraver grob source-engraver)
265 | (let ((musicexport (ly:context-property context ctprop::music-export))
266 | (bar (ly:context-property context 'currentBarNumber 1))
267 | (staff-id (ly:context-property context ctprop::staff-id))
268 | (voice-id (ly:context-property context ctprop::voice-id))
269 | (moment (ly:context-property context 'measurePosition (ly:make-moment 0))))
270 | (tree-set! musicexport (list bar moment staff-id voice-id 'accidental) (accidental-interface::calc-alteration grob))
271 | ))
272 |
273 | ; store stem direction
274 | ((stem-interface engraver grob source-engraver)
275 | (let ((musicstep (ly:context-property context ctprop::export-step))
276 | (staff-id (ly:context-property context ctprop::staff-id))
277 | (voice-id (ly:context-property context ctprop::voice-id)))
278 | (ly:message "stem info ~A" (map car (ly:grob-basic-properties grob)))
279 | (tree-set! musicstep `(,staff-id ,voice-id stem dir) (ly:grob-basic-properties grob)) ;(ly:stem::calc-direction grob))
280 | ))
281 | )
282 |
283 | ; store beam span
284 | (end-acknowledgers
285 | ((beam-interface engraver grob source-engraver)
286 | (let ((musicexport (ly:context-property context ctprop::music-export))
287 | ;(musicstep (ly:context-property context ctprop::export-step))
288 | (staff-id (ly:context-property context ctprop::staff-id))
289 | (voice-id (ly:context-property context ctprop::voice-id))
290 | (bar (ly:context-property context 'currentBarNumber 1))
291 | (moment (ly:context-property context 'measurePosition (ly:make-moment 0)))
292 | (cause (grob-cause grob)))
293 | ; we stored the start-time inside the causing music-event
294 | ; we stored the end-time in beam-time one timestep before this one
295 | (cond
296 | ((music-is? cause 'NoteEvent)
297 | (let ((start-timestamp (ly:music-property cause 'timestamp))
298 | (end-timestamp (car beam-time)))
299 | (if (not (null? start-timestamp)) ; this skips grace notes
300 | (tree-set! musicexport (list (car start-timestamp) (cdr start-timestamp) staff-id voice-id 'beam) 'start) )
301 | (if (not (null? end-timestamp)) ; this skips grace notes
302 | (tree-set! musicexport (list (car end-timestamp) (cdr end-timestamp) staff-id voice-id 'beam) 'end))
303 | ;(ly:message "beam ~A ~A" start-timestamp end-timestamp)
304 | ))
305 | ((music-is? cause 'BeamEvent)
306 | (let ((start-timestamp (ly:music-property cause 'timestamp))
307 | (end-timestamp (cons bar moment)))
308 | (tree-set! musicexport (list (car start-timestamp) (cdr start-timestamp) staff-id voice-id 'beam) 'start)
309 | (tree-set! musicexport (list (car end-timestamp) (cdr end-timestamp) staff-id voice-id 'beam) 'end)
310 | ;(ly:message "beam ~A ~A" start-timestamp end-timestamp)
311 | ))
312 | ; this should'nt appear!
313 | (else (ly:message "Beam? ~A" cause))
314 | )
315 | ))
316 | )
317 | ))))
318 |
319 | ; collect lyrics
320 | (define-public collectLyrics
321 | (let ((id 0))
322 | (lambda (context)
323 | (make-engraver
324 | ((initialize trans)
325 | (let* ((score-context (ly:context-find context 'Score))
326 | (lyric-count (ly:context-property score-context ctprop::lyric-context-count)))
327 |
328 | (if (integer? lyric-count)
329 | (set! lyric-count (1+ lyric-count))
330 | (set! lyric-count 1))
331 | (set! id lyric-count)
332 | ; export tree for the current timestamp
333 | (ly:context-set-property! context ctprop::export-step (tree-create 'timestep))
334 | ))
335 |
336 | ((start-translation-timestep trans)
337 | (if (not (tree? (ly:context-property context ctprop::export-step)))
338 | (ly:context-set-property! context ctprop::export-step (tree-create 'timestep))))
339 |
340 | ((stop-translation-timestep trans)
341 | (let ((step (ly:context-property context ctprop::export-step))
342 | (musicexport (ly:context-property context ctprop::music-export))
343 | (bar (ly:context-property context 'currentBarNumber 1))
344 | (moment (ly:context-property context 'measurePosition (ly:make-moment 0))))
345 | (ly:context-set-property! context ctprop::export-step #f)
346 | (if (ly:moment moment (ly:make-moment 0))
347 | (set! bar (1- bar)))
348 | (if (tree? step)
349 | (tree-walk step '()
350 | (lambda (path xkey value)
351 | (tree-set! musicexport `(,bar ,moment ,@path) value)
352 | ) '(empty . #f)))
353 | ))
354 |
355 | (listeners
356 | ((lyric-event engraver event)
357 | (let ((musicexport (ly:context-property context ctprop::music-export))
358 | (musicstep (ly:context-property context ctprop::export-step))
359 | (text (ly:event-property event 'text))
360 | ; we need the associated voice context
361 | (voice (ly:context-property context 'associatedVoiceContext)))
362 |
363 | (if (ly:context? voice)
364 | (let* ((staff-id (ly:context-property voice ctprop::staff-id))
365 | (voice-id (ly:context-property voice ctprop::voice-id))
366 | (bar (ly:context-property context 'currentBarNumber 1))
367 | (moment (ly:context-property context 'measurePosition (ly:make-moment 0)))
368 | (lpath (list staff-id voice-id 'lyrics))
369 | (lyrics (ly:context-property voice ctprop::lyrics)))
370 |
371 | ; create/extend list of lyric events found for the associated voice context
372 | (set! lyrics (if (list? lyrics) `(,@lyrics ,text) (list text)))
373 | (tree-set! musicstep lpath lyrics)
374 | (ly:context-set-property! voice ctprop::lyrics lyrics))
375 |
376 | ; TODO if we have no associated voice context, what shall we do?
377 | (ly:message "syl ~A" text))
378 | ))
379 | )
380 |
381 | ))))
382 |
383 |
384 | ; engraver to group voices in one staff
385 | (define-public collectStaff
386 | (lambda (context)
387 | (let ((id 0))
388 | (make-engraver
389 | ((initialize trans)
390 | ; TODO StaffGroup hierarchy! -> ly:context-property-where-defined !
391 | (let* ((parent-context (ly:context-find context 'Score)) ;(ly:context-parent context)) ; look in parent context for current staff count
392 | (psc (ly:context-property parent-context ctprop::staff-context-count 0)))
393 | (set! psc (1+ psc))
394 | (ly:context-set-property! parent-context ctprop::staff-context-count psc)
395 | (set! id psc)
396 | (ly:context-set-property! context ctprop::staff-id id)
397 | (ly:message "init Staff ~A" id)
398 | (ly:context-set-property! context ctprop::export-step (tree-create 'timestep))
399 | ))
400 |
401 | ((start-translation-timestep trans)
402 | (if (not (tree? (ly:context-property context ctprop::export-step)))
403 | (ly:context-set-property! context ctprop::export-step (tree-create 'timestep))))
404 |
405 | ((stop-translation-timestep trans)
406 | (let ((step (ly:context-property context ctprop::export-step))
407 | (musicexport (ly:context-property context ctprop::music-export))
408 | (bar (ly:context-property context 'currentBarNumber 1))
409 | (moment (ly:context-property context 'measurePosition (ly:make-moment 0)))
410 | (mlen (ly:context-property context 'measureLength))
411 | (barline (ly:context-property context 'whichBar)))
412 | (ly:context-set-property! context ctprop::export-step #f) ; reset step store
413 |
414 | (if (ly:moment moment (ly:make-moment 0))
415 | (begin
416 | (set! bar (1- bar)) ; upbeat / partial
417 | ;(set! moment (ly:moment-add mlen moment))
418 | ))
419 | (tree-set! musicexport (list bar moment 'mlength) mlen)
420 | (tree-set! musicexport (list bar moment id 'mlength) mlen)
421 |
422 | (if (tree? step)
423 | (tree-walk step '()
424 | (lambda (path xkey value)
425 | (tree-set! musicexport `(,bar ,moment ,@path) value)
426 | ) '(empty . #f)))
427 |
428 | (if (and (string? barline)(not (equal? "" barline))(not (equal? "|" barline)))
429 | (begin
430 | (tree-set! musicexport (list bar moment 'barline) barline)
431 | (tree-set! musicexport (list bar moment id 'barline) barline)
432 | ))
433 | ))
434 |
435 | (listeners
436 | ((SetProperty engraver event)
437 | (let ((musicstep (ly:context-property context ctprop::export-step))
438 | (sym (ly:event-property event 'symbol))
439 | (val (ly:event-property event 'value))
440 | (staff-id (ly:context-property context ctprop::staff-id)))
441 | ; detect clefs
442 | (if (memq sym '(clefGlyph clefPosition clefTransposition))
443 | (tree-set! musicstep (list staff-id sym) val))
444 | ))
445 |
446 | ; detect key changes
447 | ((key-change-event engraver event)
448 | (let ((musicstep (ly:context-property context ctprop::export-step))
449 | (music (ly:event-property event 'music-cause))
450 | (staff-id (ly:context-property context ctprop::staff-id)))
451 | (tree-set! musicstep (list staff-id 'keysig) music)
452 | ))
453 |
454 | ; detect time signatures
455 | ((time-signature-event engraver event)
456 | (let ((musicstep (ly:context-property context ctprop::export-step))
457 | (staff-id (ly:context-property context ctprop::staff-id)))
458 | (tree-set! musicstep (list staff-id 'timesig)
459 | (cons (ly:event-property event 'numerator)(ly:event-property event 'denominator)))
460 | (tree-set! musicstep `(timesig)
461 | (cons (ly:event-property event 'numerator)(ly:event-property event 'denominator)))
462 | ))
463 | )
464 | ))))
465 |
466 | ; create score-export-engraver
467 | (define-public scoreExporter
468 | ; engraver to export tree in foreign format
469 | (define-scheme-function (options)(list?)
470 | (let* ((exporter (ly:assoc-get 'exporter options exportHumdrum #f))
471 | (suffix (ly:assoc-get 'filesuffix options (object-property exporter 'file-suffix) #f))
472 | (filename (ly:assoc-get 'filename options
473 | (format "~A.~A"
474 | (ly:assoc-get 'filebase options (ly:parser-output-name) #f)
475 | (if (string? suffix) suffix
476 | (begin
477 | (ly:input-warning (*location*) "no file suffix given!")
478 | "dat"))) #f)))
479 | (lambda (context)
480 | (make-engraver
481 | ((initialize trans)
482 | (ly:message "init ~A: \"~A\"" (procedure-name exporter) filename)
483 | (ly:context-set-property! context ctprop::music-export (tree-create ctprop::music-export))
484 | )
485 | ((finalize trans)
486 | (let ((musicexport (ly:context-property context ctprop::music-export)))
487 | ; when score is finished, score is exported
488 | (tree-set! musicexport '(finaltime)
489 | (cons (ly:context-property context 'currentBarNumber) (ly:context-property context 'measurePosition)))
490 | ;(for-each (lambda (sym) (ly:message "~A: ~A" sym (tree-get musicexport (list sym))))
491 | ; (filter symbol? (tree-get-keys musicexport '())))
492 | ;(tree-display musicexport)
493 | (exporter musicexport filename)
494 | ))
495 | ))
496 | )))
497 |
498 | ; create output-definition (layout) with file exporter
499 | (define-public FileExport
500 | (define-scheme-function (options)(list?)
501 | #{
502 | \layout {
503 | \context {
504 | \Voice
505 | \consists #collectVoice
506 | }
507 | \context {
508 | \Staff
509 | \consists #collectStaff
510 | }
511 | \context {
512 | \Lyrics
513 | \consists #collectLyrics
514 | }
515 | \context {
516 | \Score
517 | \consists \scoreExporter #options
518 | }
519 | }
520 | #}))
521 |
522 |
--------------------------------------------------------------------------------
/export-base.ly:
--------------------------------------------------------------------------------
1 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2 | % %
3 | % This file is part of openLilyLib, %
4 | % =========== %
5 | % the community library project for GNU LilyPond %
6 | % (https://github.com/openlilylib) %
7 | % ----------- %
8 | % %
9 | % Library: lilypond-export %
10 | % =============== %
11 | % %
12 | % export foreign file formats with LilyPond %
13 | % %
14 | % lilypond-export is free software: you can redistribute it and/or modify %
15 | % it under the terms of the GNU General Public License as published by %
16 | % the Free Software Foundation, either version 3 of the License, or %
17 | % (at your option) any later version. %
18 | % %
19 | % lilypond-export is distributed in the hope that it will be useful, %
20 | % but WITHOUT ANY WARRANTY; without even the implied warranty of %
21 | % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the %
22 | % GNU General Public License for more details. %
23 | % %
24 | % You should have received a copy of the GNU General Public License %
25 | % along with openLilyLib. If not, see . %
26 | % %
27 | % openLilyLib is maintained by Urs Liska, ul@openlilylib.org %
28 | % lilypond-export is maintained by Jan-Peter Voigt, jp.voigt@gmx.de %
29 | % %
30 | % Copyright Jan-Peter Voigt, Urs Liska, 2017, 2018 %
31 | % %
32 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
33 |
34 | \version "2.19.58"
35 | #(use-modules (lilypond-export api))
36 |
37 | #(ly:warning "deprecated include \"export-base.ly\"!")
38 | #(ly:warning "do \\include \"oll-core/package.ily\" and \"\n\\loadPackage lilypond-export\"")
39 |
40 | %%%% export music
41 | % filebase: file basename - suffix (.krn/.xml) is taken from the exporter
42 | % exporter: function or symbol: hum -> humdrum, xml -> musicXML, not implemented yet: [l]mei -> [L-]MEI
43 | % music: the music to export
44 | #(define (symbol-or-procedure? v) (or (symbol? v)(procedure? v)))
45 | exportMusic =
46 | #(let ((exporters `((xml . ,exportMusicXML)(hum . ,exportHumdrum)(lily . ,exportLilyPond))))
47 | (define-void-function (filebase exporter music)((string? (ly:parser-output-name)) symbol-or-procedure? ly:music?)
48 | (if (symbol? exporter) (set! exporter (ly:assoc-get exporter exporters exportMusicXML #t)))
49 | (ly:run-translator (ly:score-music (scorify-music music)) (FileExport `((filebase . ,filebase)(exporter . ,exporter)) ))
50 | ))
51 |
52 |
--------------------------------------------------------------------------------
/export-example.ly:
--------------------------------------------------------------------------------
1 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2 | % %
3 | % This file is part of openLilyLib, %
4 | % =========== %
5 | % the community library project for GNU LilyPond %
6 | % (https://github.com/openlilylib) %
7 | % ----------- %
8 | % %
9 | % Library: lilypond-export %
10 | % =============== %
11 | % %
12 | % export foreign file formats with LilyPond %
13 | % %
14 | % lilypond-export is free software: you can redistribute it and/or modify %
15 | % it under the terms of the GNU General Public License as published by %
16 | % the Free Software Foundation, either version 3 of the License, or %
17 | % (at your option) any later version. %
18 | % %
19 | % lilypond-export is distributed in the hope that it will be useful, %
20 | % but WITHOUT ANY WARRANTY; without even the implied warranty of %
21 | % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the %
22 | % GNU General Public License for more details. %
23 | % %
24 | % You should have received a copy of the GNU General Public License %
25 | % along with openLilyLib. If not, see . %
26 | % %
27 | % openLilyLib is maintained by Urs Liska, ul@openlilylib.org %
28 | % lilypond-export is maintained by Jan-Peter Voigt, jp.voigt@gmx.de %
29 | % %
30 | % Copyright Jan-Peter Voigt, Urs Liska, 2017, 2018 %
31 | % %
32 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
33 |
34 | \version "2.19.82"
35 | \include "oll-core/package.ily"
36 | \loadPackage lilypond-export
37 |
38 | music = \new PianoStaff <<
39 | \new Staff <<
40 | { \time 3/4 \key es \major \set Timing.tempoWholesPerMinute = #(ly:make-moment 30) \partial 4 s4 | \repeat volta 2 { s2.*3 } }
41 | \relative <<
42 | { b'4 | c4. a8 g4 | g( bes) | \tuplet 3/2 { a c a~ } a | } \\
43 | { r4 | e8 f g fis e4 | es2 d4 | 8[ ] 4 }
44 | >>
45 | >>
46 | \new Staff {
47 | \time 3/4 \clef bass \key es \major
48 | \new Voice = "mel" \relative { g4 | c2 c4 | c g b | a2. | }
49 | }
50 | \new Lyrics \lyricsto "mel" { \lyricmode { la la le li lu la lo } }
51 | \new Lyrics \lyricsto "mel" { \lyricmode { ku ka ke ki ku ka ko } }
52 | >>
53 |
54 | % exporter can run without actually typesetting
55 | \exportMusic \default hum \music
56 |
57 | opts.exporter = #exportMusicXML
58 | % or as a layout extension that is added to the layout
59 | \score {
60 | \music
61 | \layout {
62 | \FileExport #opts
63 | }
64 | \midi {}
65 | }
66 |
--------------------------------------------------------------------------------
/export-example2.ly:
--------------------------------------------------------------------------------
1 | \version "2.25.5"
2 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 | % %
4 | % This file is part of openLilyLib, %
5 | % =========== %
6 | % the community library project for GNU LilyPond %
7 | % (https://github.com/openlilylib) %
8 | % ----------- %
9 | % %
10 | % Library: lilypond-export %
11 | % =============== %
12 | % %
13 | % export foreign file formats with LilyPond %
14 | % %
15 | % lilypond-export is free software: you can redistribute it and/or modify %
16 | % it under the terms of the GNU General Public License as published by %
17 | % the Free Software Foundation, either version 3 of the License, or %
18 | % (at your option) any later version. %
19 | % %
20 | % lilypond-export is distributed in the hope that it will be useful, %
21 | % but WITHOUT ANY WARRANTY; without even the implied warranty of %
22 | % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the %
23 | % GNU General Public License for more details. %
24 | % %
25 | % You should have received a copy of the GNU General Public License %
26 | % along with openLilyLib. If not, see . %
27 | % %
28 | % openLilyLib is maintained by Urs Liska, ul@openlilylib.org %
29 | % lilypond-export is maintained by Jan-Peter Voigt, jp.voigt@gmx.de %
30 | % %
31 | % Copyright Jan-Peter Voigt, Urs Liska, 2017, 2018 %
32 | % %
33 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
34 |
35 | \include "oll-core/package.ily"
36 | \loadPackage lilypond-export
37 |
38 | music = <<
39 | \relative { a'8 b16 a g8 a32 b c16 b16.. a64 g16 a32 g }
40 | \relative { a'8[ b16 a] g8[ a32 b c16] b16..[ a64 g16 a32 g] }
41 | >>
42 |
43 | opts.exporter = #exportMusicXML
44 | % or as a layout extension that is added to the layout
45 | \score {
46 | \music
47 | \layout {
48 | \FileExport #opts
49 | }
50 | }
51 |
52 |
53 |
--------------------------------------------------------------------------------
/lily.scm:
--------------------------------------------------------------------------------
1 | ;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2 | ;% %
3 | ;% This file is part of openLilyLib, %
4 | ;% =========== %
5 | ;% the community library project for GNU LilyPond %
6 | ;% (https://github.com/openlilylib) %
7 | ;% ----------- %
8 | ;% %
9 | ;% Library: lilypond-export %
10 | ;% =============== %
11 | ;% %
12 | ;% export foreign file formats with LilyPond %
13 | ;% %
14 | ;% lilypond-export is free software: you can redistribute it and/or modify %
15 | ;% it under the terms of the GNU General Public License as published by %
16 | ;% the Free Software Foundation, either version 3 of the License, or %
17 | ;% (at your option) any later version. %
18 | ;% %
19 | ;% lilypond-export is distributed in the hope that it will be useful, %
20 | ;% but WITHOUT ANY WARRANTY; without even the implied warranty of %
21 | ;% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the %
22 | ;% GNU General Public License for more details. %
23 | ;% %
24 | ;% You should have received a copy of the GNU General Public License %
25 | ;% along with openLilyLib. If not, see . %
26 | ;% %
27 | ;% openLilyLib is maintained by Urs Liska, ul@openlilylib.org %
28 | ;% lilypond-export is maintained by Jan-Peter Voigt, jp.voigt@gmx.de %
29 | ;% %
30 | ;% Copyright Jan-Peter Voigt, Urs Liska, 2017 %
31 | ;% %
32 | ;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
33 |
34 | ;% TODO ties, slurs
35 |
36 | (define-module (lilypond-export lily))
37 |
38 | (use-modules
39 | (oll-core tree)
40 | (oll-core internal music-tools)
41 | (lilypond-export api)
42 | (lily))
43 |
44 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
45 | ;;; humdrum export
46 |
47 | (define-public (exportLilyPond musicexport filename . options)
48 | (ly:message "not implemented yet!")
49 | )
50 |
51 | (set-object-property! exportLilyPond 'file-suffix "ly")
52 |
--------------------------------------------------------------------------------
/package.cnf:
--------------------------------------------------------------------------------
1 | #
2 | # openLilyLib/lilypond-export configuration
3 | #
4 |
5 | name: lilypond-export
6 | display-name: LilyPond Export
7 | short-description: Export LilyPond scores to other formats
8 | description: <
9 | The LilyPond Export module provides an infrastructure to export scores to
10 | files of different format. File-Formats are provided as plugins. Current
11 | supported formats are MusicXML and Humdrum. MEI shall follow ASAP.
12 | >
13 | oll-core: 0.5.0
14 | maintainers: [
15 | Jan-Peter Voigt
16 | ]
17 | version: 0.0.1
18 | license: GPL3
19 | website: https://github.com/jpvoigt/lilypond-export
20 | repository: https://github.com/jpvoigt/lilypond-export.git
21 |
--------------------------------------------------------------------------------
/package.ily:
--------------------------------------------------------------------------------
1 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2 | % %
3 | % This file is part of openLilyLib, %
4 | % =========== %
5 | % the community library project for GNU LilyPond %
6 | % (https://github.com/openlilylib) %
7 | % ----------- %
8 | % %
9 | % Library: lilypond-export %
10 | % =============== %
11 | % %
12 | % export foreign file formats with LilyPond %
13 | % %
14 | % lilypond-export is free software: you can redistribute it and/or modify %
15 | % it under the terms of the GNU General Public License as published by %
16 | % the Free Software Foundation, either version 3 of the License, or %
17 | % (at your option) any later version. %
18 | % %
19 | % lilypond-export is distributed in the hope that it will be useful, %
20 | % but WITHOUT ANY WARRANTY; without even the implied warranty of %
21 | % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the %
22 | % GNU General Public License for more details. %
23 | % %
24 | % You should have received a copy of the GNU General Public License %
25 | % along with openLilyLib. If not, see . %
26 | % %
27 | % openLilyLib is maintained by Urs Liska, ul@openlilylib.org %
28 | % lilypond-export is maintained by Jan-Peter Voigt, jp.voigt@gmx.de %
29 | % %
30 | % Copyright Jan-Peter Voigt, Urs Liska, 2017, 2018 %
31 | % %
32 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
33 |
34 | \version "2.19.58"
35 | #(use-modules (lilypond-export api))
36 |
37 | %%%% export music
38 | % filebase: file basename - suffix (.krn/.xml) is taken from the exporter
39 | % exporter: symbol or function: hum -> humdrum, xml -> musicXML,
40 | % not implemented yet: [l]mei -> [L-]MEI, lily -> LilyPond
41 | % or an exporter function #(lambda (export-tree filename . options) ...)
42 | % music: the music to export
43 | #(define (symbol-or-procedure? v) (or (symbol? v)(procedure? v)))
44 | exportMusic =
45 | #(let
46 | ((exporters
47 | `((xml . ,exportMusicXML)
48 | (hum . ,exportHumdrum)
49 | (lily . ,exportLilyPond))))
50 | (define-void-function (filebase exporter music)
51 | ((string? (ly:parser-output-name)) symbol-or-procedure? ly:music?)
52 | (if (symbol? exporter)
53 | (set! exporter (ly:assoc-get exporter exporters exportMusicXML #t)))
54 | (ly:run-translator
55 | (ly:score-music (scorify-music music))
56 | (FileExport `((filebase . ,filebase)(exporter . ,exporter))))))
57 |
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