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Diffstat (limited to 'src/stklos/reader.stk')
| -rw-r--r-- | src/stklos/reader.stk | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/src/stklos/reader.stk b/src/stklos/reader.stk deleted file mode 100644 index bd38562..0000000 --- a/src/stklos/reader.stk +++ /dev/null @@ -1,136 +0,0 @@ -;;;; -;;;; reader.stk -- Reader hook for the open bracket -;;;; -;;;; Copyright (C) 2001-2003 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr> -;;;; -;;;; -;;;; This program is free software; you can redistribute it and/or modify -;;;; it under the terms of the GNU General Public License as published by -;;;; the Free Software Foundation; either version 2 of the License, or -;;;; (at your option) any later version. -;;;; -;;;; This program is distributed in the hope that it will be useful, -;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of -;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -;;;; GNU General Public License for more details. -;;;; -;;;; You should have received a copy of the GNU General Public License -;;;; along with this program; if not, write to the Free Software -;;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, -;;;; USA. -;;;; -;;;; Author: Erick Gallesio [eg@unice.fr] -;;;; Creation date: 6-Dec-2001 22:59 (eg) -;;;; Last file update: 28-Feb-2004 10:22 (eg) -;;;; - -;; Examples of ISO-2022-JP (here for cut'n paste tests, since my japanese -;; is *very* limited ;-). -;; -;; "Japan" 日本 -;; "China and Chinese music" 中国と中国の音楽 - - -;; -;; This function is a hook for the standard reader. After defining, -;; %read-bracket, the reader calls it when it encounters an open -;; bracket - - -(define (%read-bracket in) - - (define (read-japanese in) - ;; This function reads an ISO-2022-JP sequence. Susch s sequence is coded - ;; as "^[$B......^[(B" . When entering in this function the current - ;; character is 'B' (the opening sequence one). Function reads until the - ;; end of the sequence and return it as a string - (read-char in) ;; to skip the starting #\B - (let ((res (open-output-string))) - (let Loop ((c (peek-char in))) - (cond - ((eof-object? c) ;; EOF - (error '%read-bracket "EOF encountered")) - ((char=? c #\escape) - (read-char in) - (let ((next1 (peek-char in))) - (if (char=? next1 #\() - (begin - (read-char in) - (let ((next2 (peek-char in))) - (if (char=? next2 #\B) - (begin - (read-char in) - (format "\033$B~A\033(B" (get-output-string res))) - (begin - (format res "\033~A" next1) - (Loop next2))))) - (begin - (display #\escape res) - (Loop next1))))) - (else (display (read-char in) res) - (Loop (peek-char in))))))) - ;; - ;; Body of %read-bracket starts here - ;; - (let ((out (open-output-string)) - (res '()) - (in-string? #f)) - - (read-char in) ; skip open bracket - - (let Loop ((c (peek-char in))) - (cond - ((eof-object? c) ;; EOF - (error '%read-bracket "EOF encountered")) - - ((char=? c #\escape) ;; ISO-2022-JP string? - (read-char in) - (let ((next1 (peek-char in))) - (if (char=? next1 #\$) - (begin - (read-char in) - (let ((next2 (peek-char in))) - (if (char=? next2 #\B) - (begin - (set! res - (append! res - (list (get-output-string out) - (list 'unquote - (list 'jp - (read-japanese in)))))) - (set! out (open-output-string))) - (format out "\033~A" next1)))) - (display #\escape out))) - (Loop (peek-char in))) - - ((char=? c #\\) ;; Quote char - (read-char in) - (display (read-char in) out) - (Loop (peek-char in))) - - ((and (not in-string?) (char=? c #\,)) ;; Comma - (read-char in) - (let ((next (peek-char in))) - (if (char=? next #\() - (begin - (set! res (append! res (list (get-output-string out) - (list 'unquote - (read in))))) - (set! out (open-output-string))) - (display #\, out)) - (Loop (peek-char in)))) - - ((and (not in-string?) (char=? c #\[)) ;; Open bracket - (display (%read-bracket in) out) - (Loop (peek-char in))) - - ((and (not in-string?) (char=? c #\])) ;; Close bracket - (read-char in) - (let ((str (get-output-string out))) - (list 'quasiquote - (append! res (if (string=? str "") '() (list str)))))) - - (else (when (char=? c #\") (set! in-string? (not in-string?))) - (display (read-char in) out) - (Loop (peek-char in))))))) - |