1 ; lily.scm -- implement Scheme output routines for TeX and PostScript
3 ; source file of the GNU LilyPond music typesetter
5 ; (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
8 (debug-enable 'backtrace)
14 (map (lambda (n) (string-append (number->string n ) " ")) l)))
19 (map (lambda (n) (string-append (number->string n) " ")) l)))
21 (define (chop-decimal x) (if (< (abs x) 0.001) 0.0 x))
23 (define (number->octal-string x)
24 (let* ((n (inexact->exact x))
26 (n8 (quotient (- n (* n64 64)) 8)))
30 (number->string (remainder (- n (+ (* n64 64) (* n8 8))) 8)))))
32 (define (inexact->string x radix)
33 (let ((n (inexact->exact x)))
34 (number->string n radix)))
40 (string-append (number->string (car c)) " ")
41 (string-append (number->string (cadr c)) " ")))
48 (make-string 1 (integer->char (+ (char->integer #\A) i)))
53 (define (scm-scm action-name)
56 (define security-paranoia #f)
59 ;; See documentation of Item::visibility_lambda_
60 (define (postbreak_only_visibility d) (if (= d 1) '(#f . #f) '(#t . #t)))
61 (define (non_postbreak_visibility d) (if (= d -1) '(#t . #t) '(#f . #f)))
62 (define (spanbar_non_postbreak_visibility d) (if (= d -1) '(#t . #t) '(#f . #f)))
63 (define (spanbar_postbreak_only_visibility d) (if (= d 1) '(#f . #f) '(#t . #t)))
68 (define (tex-scm action-name)
73 (define font-alist '())
75 (define current-font "")
76 (define (clear-fontcache)
80 (set! current-font "")))
82 (define (cached-fontname i)
85 (make-string 1 (integer->char (+ 65 i)))
89 (define (select-font font-name)
90 (if (not (equal? font-name current-font))
92 (set! current-font font-name)
93 (define font-cmd (assoc font-name font-alist))
96 (set! font-cmd (cached-fontname font-count))
97 (set! font-alist (acons font-name font-cmd font-alist))
98 (set! font-count (+ 1 font-count))
99 (string-append "\\font" font-cmd "=" font-name font-cmd)
112 (define (beam width slope thick)
113 (embedded-ps ((ps-scm 'beam) width slope thick)))
116 (embedded-ps ((ps-scm 'bracket) h)))
118 (define (dashed-slur thick dash l)
119 (embedded-ps ((ps-scm 'dashed-slur) thick dash l)))
121 (define (crescendo w h cont)
122 (embedded-ps ((ps-scm 'crescendo) w h cont)))
124 (define (decrescendo w h cont)
125 (embedded-ps ((ps-scm 'decrescendo) w h cont)))
128 (define (embedded-ps s)
129 (string-append "\\embeddedps{" s "}"))
132 "\n\\EndLilyPondOutput")
134 (define (experimental-on) "\\turnOnExperimentalFeatures")
140 (define (font-switch i)
144 (define (font-def i s)
146 "\\font" (font-switch i) "=" s "\n"))
148 (define (generalmeter num den)
150 "\\generalmeter{" (number->string (inexact->exact num)) "}{" (number->string (inexact->exact den)) "}"))
152 (define (header-end) "\\turnOnPostScript")
154 (define (header creator generate)
156 "%created by: " creator generate "\n"))
158 (define (invoke-char s i)
160 "\n\\" s "{" (inexact->string i 10) "}" ))
162 (string-append "\\show{" (inexact->string i 10) "}"))
164 (define (invoke-dim1 s d)
166 "\n\\" s "{" (number->dim d) "}"))
171 ;; need to do something to make this really safe.
173 (if security-paranoia
174 (define (output-tex-string s)
175 (regexp-substitute/global #f "\\\\" s 'pre "$\\backslash$" 'post))
176 (define (output-tex-string s) s))
178 (define (lily-def key val)
180 "\\def\\" (output-tex-string key) "{" (output-tex-string val) "}\n"))
182 (define (number->dim x)
184 (number->string (chop-decimal x)) "pt "))
186 (define (placebox x y s)
189 (number->dim y) "}{" (number->dim x) "}{" s "}"))
191 (define (pianobrace y)
193 (define minht (* 2 mudelapaperstaffheight))
194 (define maxht (* 7 minht))
196 "{\\bracefont " (char (/ (- (min y (- maxht step)) minht) step)) "}"))
200 (define (rulesym h w)
202 "\\vrule height " (number->dim (/ h 2))
203 " depth " (number->dim (/ h 2))
204 " width " (number->dim w)
208 (define (bezier-sandwich l)
209 (embedded-ps ((ps-scm 'bezier-sandwich) l)))
218 (define (filledbox breapth width depth height)
220 "\\kern" (number->dim (- breapth))
221 "\\vrule width " (number->dim (+ breapth width))
222 "depth " (number->dim depth)
223 "height " (number->dim height) " "))
230 (string-append "\\hbox{" (output-tex-string s) "}"))
232 (define (tuplet dx dy thick dir)
233 (embedded-ps ((ps-scm 'tuplet) dx dy thick dir)))
235 (define (volta w thick last)
236 (embedded-ps ((ps-scm 'volta) w thick last)))
239 ;; The procedures listed below form the public interface of TeX-scm.
240 ;; (should merge the 2 lists)
241 (cond ((eq? action-name 'all-definitions)
244 (define tuplet ,tuplet)
245 (define bracket ,bracket)
246 (define crescendo ,crescendo)
247 (define dashed-slur ,dashed-slur)
248 (define decrescendo ,decrescendo)
249 (define end-output ,end-output)
250 (define font-def ,font-def)
251 (define font-switch ,font-switch)
252 (define generalmeter ,generalmeter)
253 (define header-end ,header-end)
254 (define lily-def ,lily-def)
255 (define header ,header)
256 (define invoke-char ,invoke-char)
257 (define invoke-dim1 ,invoke-dim1)
258 (define placebox ,placebox)
259 (define rulesym ,rulesym)
260 (define bezier-sandwich ,bezier-sandwich)
261 (define select-font ,select-font)
262 (define start-line ,start-line)
263 (define filledbox ,filledbox)
264 (define stop-line ,stop-line)
266 (define experimental-on ,experimental-on)
268 (define pianobrace ,pianobrace)
269 (define volta ,volta)
272 ((eq? action-name 'experimental-on) experimental-on)
273 ((eq? action-name 'beam) beam)
274 ((eq? action-name 'tuplet) tuplet)
275 ((eq? action-name 'bracket) bracket)
276 ((eq? action-name 'crescendo) crescendo)
277 ((eq? action-name 'dashed-slur) dashed-slur)
278 ((eq? action-name 'decrescendo) decrescendo)
279 ((eq? action-name 'end-output) end-output)
280 ((eq? action-name 'font-def) font-def)
281 ((eq? action-name 'font-switch) font-switch)
282 ((eq? action-name 'generalmeter) generalmeter)
283 ((eq? action-name 'header-end) header-end)
284 ((eq? action-name 'lily-def) lily-def)
285 ((eq? action-name 'header) header)
286 ((eq? action-name 'invoke-char) invoke-char)
287 ((eq? action-name 'invoke-dim1) invoke-dim1)
288 ((eq? action-name 'placebox) placebox)
289 ((eq? action-name 'rulesym) rulesym)
290 ((eq? action-name 'bezier-sandwich) bezier-sandwich)
291 ((eq? action-name 'start-line) start-line)
292 ((eq? action-name 'stem) stem)
293 ((eq? action-name 'stop-line) stop-line)
294 ((eq? action-name 'volta) volta)
295 (else (error "unknown tag -- PS-TEX " action-name))
300 (define (ps-scm action-name)
301 (define (beam width slope thick)
303 (numbers->string (list width slope thick)) " draw_beam " ))
306 (invoke-dim1 "draw_bracket" h))
308 (define (crescendo w h cont)
310 (numbers->string (list w h (inexact->exact cont)))
313 (define (dashed-slur thick dash l)
315 (apply string-append (map control->string l))
316 (number->string thick)
318 (if (> 1 dash) (number->string (- (* thick dash) thick)) "0") " "
319 (number->string (* 2 thick))
320 " ] 0 draw_dashed_slur"))
322 (define (decrescendo w h cont)
324 (numbers->string (list w h (inexact->exact cont)))
331 (define (experimental-on) "")
333 (define (font-def i s)
336 (substring s 0 (- (string-length s) 4))
337 " findfont 12 scalefont setfont} bind def\n"))
339 (define (font-switch i)
340 (string-append (font i) " "))
342 (define (generalmeter num den)
343 (string-append (number->string (inexact->exact num)) " " (number->string (inexact->exact den)) " generalmeter "))
345 (define (header-end) "")
346 (define (lily-def key val)
348 "/" key " {" val "} bind def\n"))
350 (define (header creator generate)
353 "%%Creator: " creator generate "\n"))
355 (define (invoke-char s i)
357 "(\\" (inexact->string i 8) ") " s " " ))
359 (define (invoke-dim1 s d)
361 (number->string (* d (/ 72.27 72))) " " s ))
363 (define (placebox x y s)
365 (number->string x) " " (number->string y) " {" s "} placebox "))
367 (define (rulesym x y)
369 (number->string x) " "
370 (number->string y) " "
373 (define (bezier-sandwich l)
375 (apply string-append (map control->string l))
376 " draw_bezier_sandwich"))
383 (define (stem kern width height depth)
384 (string-append (numbers->string (list kern width height depth))
391 (string-append "(" s ") set" f " "))
394 (define (volta w thick last)
396 (numbers->string (list w thick (inexact->exact last)))
399 (define (tuplet dx dy thick dir)
401 (numbers->string (list dx dy thick (inexact->exact dir)))
409 ; dispatch on action-name
410 (cond ((eq? action-name 'all-definitions)
413 (define tuplet ,tuplet)
414 (define bracket ,bracket)
415 (define crescendo ,crescendo)
416 (define volta ,volta)
417 (define bezier-sandwich ,bezier-sandwich)
418 (define dashed-slur ,dashed-slur)
419 (define decrescendo ,decrescendo)
421 (define end-output ,end-output)
422 (define font-def ,font-def)
423 (define font-switch ,font-switch)
424 (define generalmeter ,generalmeter)
425 (define header-end ,header-end)
426 (define lily-def ,lily-def)
427 (define header ,header)
428 (define invoke-char ,invoke-char)
429 (define invoke-dim1 ,invoke-dim1)
430 (define placebox ,placebox)
431 (define rulesym ,rulesym)
432 (define start-line ,start-line)
434 (define stop-line ,stop-line)
437 ((eq? action-name 'tuplet) tuplet)
438 ((eq? action-name 'beam) beam)
439 ((eq? action-name 'bracket) bracket)
440 ((eq? action-name 'crescendo) crescendo)
441 ((eq? action-name 'volta) volta)
442 ((eq? action-name 'bezier-sandwich) bezier-sandwich)
443 ((eq? action-name 'dashed-slur) dashed-slur)
444 ((eq? action-name 'decrescendo) decrescendo)
445 (else (error "unknown tag -- PS-SCM " action-name))
451 ; Russ McManus, <mcmanus@IDT.NET>
453 ; I use the following, which should definitely be provided somewhere
454 ; in guile, but isn't, AFAIK:
458 (define (hash-table-for-each fn ht)
460 ((= i (vector-length ht)))
461 (do ((alist (vector-ref ht i) (cdr alist)))
463 (fn (car (car alist)) (cdr (car alist))))))
465 (define (hash-table-map fn ht)
468 ((= i (vector-length ht)) (reverse ret-ls))
469 (do ((alist (vector-ref ht i) (cdr alist)))
471 (set! ret-ls (cons (fn (car (car alist)) (cdr (car alist))) ret-ls)))))