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adding bytevector procedure

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Alex Shinn 2012-11-01 23:12:20 +09:00
parent dd168e5506
commit ed443d42a2
2 changed files with 8 additions and 1 deletions
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2
lib/scheme/base.sld
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@ -12,7 +12,7 @@
(srfi 9) (srfi 11) (srfi 39))
(export
* + - ... / < <= = => > >= _ abs and append apply assoc assq assv begin
binary-port? boolean? boolean=? bytevector-append
binary-port? boolean? boolean=? bytevector bytevector-append
bytevector-copy bytevector-copy! bytevector-length
bytevector-u8-ref bytevector-u8-set! bytevector? caar cadr
call-with-current-continuation call-with-port call-with-values

7
lib/scheme/extras.scm
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@ -165,6 +165,13 @@
(define (string->vector vec . o)
(list->vector (apply string->list vec o)))
(define (bytevector . args)
(let* ((len (length args))
(res (make-bytevector len)))
(do ((i 0 (+ i 1)) (ls args (cdr ls)))
((null? ls) res)
(bytevector-u8-set! res i (car ls)))))
(define (bytevector-copy! to at from . o)
(let* ((start (if (pair? o) (car o) 0))
(end (if (and (pair? o) (pair? (cdr o)))