summaryrefslogtreecommitdiff
path: root/src/stklos/reader.stk
diff options
context:
space:
mode:
Diffstat (limited to 'src/stklos/reader.stk')
-rw-r--r--src/stklos/reader.stk136
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)))))))
-