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/tetex/*.enc mf/out
10 ;;#(format (current-error-port) "a:~S\n"
11 ;; (encoded-index "TeX text" "TeX text" 65))
13 ;;#(format (current-error-port) "b:~S\n"
14 ;; (encoded-index "TeX text" "TeX extended ASCII" 176))
16 (define coding-file-alist
18 '(("TeX typewriter text" . "09fbbfac.enc") ;; cmtt10
19 ("TeX math symbols" . "10037936.enc") ;; cmbsy
20 ("ASCII caps and digits" . "1b6d048e") ;; cminch
21 ("TeX math italic" . "aae443f0.enc") ;; cmmi10
22 ("TeX extended ASCII" . "d9b29452.enc")
23 ("TeX text" . "f7b6d320.enc")
24 ("TeX text without f-ligatures" . "0ef0afca.enc")
25 ("Extended TeX Font Encoding - Latin" . "tex256.enc")
28 ("feta braces" . "feta-braces0.enc")
29 ("feta number" . "feta-nummer10.enc")
30 ("feta music" . "feta20.enc")
31 ("parmesan music" . "parmesan20.enc")))
33 (define encoding-alist '())
35 (define (read-coding-file coding)
36 (let* ((string (ly:gulp-file (assoc-get coding coding-file-alist)))
37 ;;(string (ly:gulp-file "f7b6d320.enc"))
38 (start (string-index string #\[))
39 (end (string-index string #\]))
40 (ps-lst (string-tokenize (substring string (+ start 1) end)))
41 (lst (map (lambda (x) (substring x 1)) ps-lst))
42 (vector (list->vector lst))
43 (table (make-hash-table 256)))
46 (hash-create-handle! table (vector-ref vector i) i))
47 (let ((entry (cons coding (cons vector table))))
48 (set! encoding-alist (append (list entry) encoding-alist))
51 (define (get-coding-table coding)
52 (let ((entry (assoc-get coding encoding-alist #f)))
54 (cdr (read-coding-file coding)))))
56 (define (get-coding-vector coding)
57 (let ((entry (assoc-get coding encoding-alist #f)))
59 (car (read-coding-file coding)))))
61 (define-public (encoded-index font-coding input-coding code)
62 (let* ((font (get-coding-table font-coding))
63 (in (get-coding-vector input-coding))
64 (char (vector-ref in code)))
65 (hash-ref font char)))