1 ;;;; output-lib.scm -- implement Scheme output helper functions
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 1998--2000 Jan Nieuwenhuizen <janneke@gnu.org>
6 ;;;; Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 (define (arg->string arg)
10 (cond ((number? arg) (inexact->string arg 10))
11 ((string? arg) (string-append "\"" arg "\""))
12 ((symbol? arg) (string-append "\"" (symbol->string arg) "\""))))
15 (define (func name . args)
21 (map (lambda (x) (string-append " " (arg->string x))) args)))
25 ;;(define (mm-to-pt x)
26 ;; (* (/ 72.27 25.40) x))
28 ;; do nothing in .scm output
29 (define (comment s) "")
31 (define (numbers->string l)
32 (apply string-append (map ly-number->string l)))
34 ; (define (chop-decimal x) (if (< (abs x) 0.001) 0.0 x))
36 (define (number->octal-string x)
37 (let* ((n (inexact->exact x))
39 (n8 (quotient (- n (* n64 64)) 8)))
43 (number->string (remainder (- n (+ (* n64 64) (* n8 8))) 8)))))
45 (define (inexact->string x radix)
46 (let ((n (inexact->exact x)))
47 (number->string n radix)))
50 (define (control->string c)
51 (string-append (number->string (car c)) " "
52 (number->string (cdr c)) " "))
57 (make-string 1 (integer->char (+ (char->integer #\A) i)))))
59 (define (scm-scm action-name)
64 (define (find-notehead-symbol duration style)
67 ((harmonic) "0mensural")
69 (string-append (number->string duration)
70 (if (< duration 0) "mensural" "")))
71 ((default) (number->string duration))
73 (string-append (number->string duration) (symbol->string style)))))
76 (define (string-encode-integer i)
79 ((< i 0) (string-append "n" (string-encode-integer (- i))))
81 (make-string 1 (integer->char (+ 65 (modulo i 26))))
82 (string-encode-integer (quotient i 26))))))
85 (define (tex-encoded-fontswitch name-mag)
86 (let* ((iname-mag (car name-mag))
87 (ename-mag (cdr name-mag)))
90 (string-append "magfont"
91 (string-encode-integer
92 (hashq (car ename-mag) 1000000))
94 (string-encode-integer
95 (inexact->exact (* 1000 (cdr ename-mag)))))))))
97 (define (define-fonts internal-external-name-mag-pairs)
98 (set! font-name-alist (map tex-encoded-fontswitch
99 internal-external-name-mag-pairs))
102 (font-load-command (car x) (cdr x)))
103 (map cdr font-name-alist))))
105 (define (fontify name-mag-pair exp)
106 (string-append (select-font name-mag-pair)