89 lines
2.7 KiB
Scheme
Executable File
89 lines
2.7 KiB
Scheme
Executable File
;;; Ikarus Scheme -- A compiler for R6RS Scheme.
|
|
;;; Copyright (C) 2006,2007,2008 Abdulaziz Ghuloum
|
|
;;;
|
|
;;; This program is free software: you can redistribute it and/or modify
|
|
;;; it under the terms of the GNU General Public License version 3 as
|
|
;;; published by the Free Software Foundation.
|
|
;;;
|
|
;;; 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, see <http://www.gnu.org/licenses/>.
|
|
|
|
|
|
|
|
(library (unicode-data)
|
|
(export get-unicode-data)
|
|
(import (ikarus))
|
|
|
|
(define (read-line)
|
|
(let f ([ac '()])
|
|
(let ([x (read-char)])
|
|
(cond
|
|
[(eof-object? x)
|
|
(if (null? ac)
|
|
(eof-object)
|
|
(list->string (reverse ac)))]
|
|
[(char=? x #\newline)
|
|
(if (null? ac) (f '()) (list->string (reverse ac)))]
|
|
[else (f (cons x ac))]))))
|
|
|
|
(define (find-semi/hash str i n)
|
|
(cond
|
|
[(or (fx= i n) (memv (string-ref str i) '(#\; #\#))) i]
|
|
[else (find-semi/hash str (+ i 1) n)]))
|
|
|
|
(define (cleanup str)
|
|
(let ([lo
|
|
(let f ([i 0] [n (string-length str)])
|
|
(cond
|
|
[(= i n) n]
|
|
[(char=? #\space (string-ref str i))
|
|
(f (add1 i) n)]
|
|
[else i]))]
|
|
[hi
|
|
(let f ([i (sub1 (string-length str))])
|
|
(cond
|
|
[(< i 0) i]
|
|
[(char=? #\space (string-ref str i))
|
|
(f (sub1 i))]
|
|
[else (+ i 1)]))])
|
|
(if (> hi lo)
|
|
(substring str lo hi)
|
|
"")))
|
|
|
|
|
|
(define (split str)
|
|
(let f ([i 0] [n (string-length str)])
|
|
(cond
|
|
[(or (= i n) (memv (string-ref str i) '(#\#)))
|
|
'("")]
|
|
[else
|
|
(let ([j (find-semi/hash str i n)])
|
|
(cond
|
|
[(or (= j n) (memv (string-ref str i) '(#\#)))
|
|
(list (cleanup (substring str i j)))]
|
|
[else
|
|
(cons (cleanup (substring str i j))
|
|
(f (+ j 1) n))]))])))
|
|
|
|
(define (extract-uni-data)
|
|
(let f ([ls '()])
|
|
(let ([line (read-line)])
|
|
(cond
|
|
[(eof-object? line)
|
|
(reverse ls)]
|
|
[else
|
|
(let ([fields (split line)])
|
|
(if (or (null? fields) (equal? fields '("")))
|
|
(f ls)
|
|
(f (cons fields ls))))]))))
|
|
|
|
(define (get-unicode-data filename)
|
|
(with-input-from-file
|
|
filename
|
|
extract-uni-data)))
|