1 ;;;; encoding.scm -- font encoding
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 2004 Jan Nieuwenhuizen <janneke@gnu.org>
8 ;; cp /usr/share/texmf/dvips/base/*.enc mf/out
9 ;; cp /usr/share/texmf/dvips/tetex/*.enc mf/out
11 ;;#(display (reencode-string "T1" "T1" "hellö"))
12 ;;#(format (current-error-port) "a:~S\n"
13 ;; (encoded-index "TeX text" "TeX text" 65))
15 ;;#(format (current-error-port) "b:~S\n"
16 ;; (encoded-index "TeX text" "TeX extended ASCII" 176))
19 (define coding-file-alist
21 '(("TeX typewriter text" . "09fbbfac.enc") ;; cmtt10
22 ("TeX math symbols" . "10037936.enc") ;; cmbsy
23 ("ASCII caps and digits" . "1b6d048e") ;; cminch
24 ("TeX math italic" . "aae443f0.enc") ;; cmmi10
25 ("TeX extended ASCII" . "d9b29452.enc")
26 ("TeX text" . "f7b6d320.enc")
27 ("TeX text without f-ligatures" . "0ef0afca.enc")
28 ("Extended TeX Font Encoding - Latin" . "tex256.enc")
34 ("feta braces" . "feta-braces0.enc")
35 ("feta number" . "feta-nummer10.enc")
36 ("feta music" . "feta20.enc")
37 ("parmesan music" . "parmesan20.enc")))
39 (define encoding-alist '())
41 (define (read-coding-file coding)
42 (let* ((raw (ly:gulp-file (assoc-get coding coding-file-alist)))
43 ;;(raw (ly:gulp-file "f7b6d320.enc"))
44 (string (regexp-substitute/global #f "%[^\n]*" raw 'pre "" 'post))
45 (start (string-index string #\[))
46 (end (string-index string #\]))
47 (ps-lst (string-tokenize (substring string (+ start 1) end)))
48 (lst (map (lambda (x) (substring x 1)) ps-lst))
49 (vector (list->vector lst))
50 (table (make-hash-table 256)))
53 (hash-create-handle! table (vector-ref vector i) i))
54 (let ((entry (cons coding (cons vector table))))
55 (set! encoding-alist (append (list entry) encoding-alist))
58 (define (get-coding-table coding)
59 (let ((entry (assoc-get coding encoding-alist #f)))
61 (cdr (read-coding-file coding)))))
63 (define (get-coding-vector coding)
64 (let ((entry (assoc-get coding encoding-alist #f)))
66 (car (read-coding-file coding)))))
68 (define-public (encoded-index font-coding input-coding code)
69 (format (current-error-port) "CODE: ~S\n" code)
70 (let* ((font (get-coding-table font-coding))
71 (in (get-coding-vector input-coding))
72 (char (vector-ref in code)))
73 (format (current-error-port) "CHAR: ~S\ng" char)
74 (hash-ref font char)))
76 (define-public (reencode-string font-coding input-coding s)
80 (map (lambda (x) (encoded-index font-coding input-coding x))
81 (map char->integer (string->list s))))))