diff options
Diffstat (limited to 'byte.scm')
-rw-r--r-- | byte.scm | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/byte.scm b/byte.scm new file mode 100644 index 0000000..3d091ce --- /dev/null +++ b/byte.scm @@ -0,0 +1,14 @@ +;;; "byte.scm" small integers, not necessarily chars. + +(define (byte-ref str ind) (char->integer (string-ref str ind))) +(define (byte-set! str ind val) (string-set! str ind (integer->char val))) +(define (make-bytes len . opt) + (if (null? opt) (make-string len) + (make-string len (integer->char (car opt))))) +(define (write-byte byt . opt) (apply write-char (integer->char byt) opt)) +(define (read-byte . opt) + (let ((c (apply read-char opt))) + (if (eof-object? c) c (char->integer c)))) +(define (bytes . args) (list->bytes args)) +(define (bytes->list bts) (map char->integer (string->list bts))) +(define (list->bytes lst) (list->string (map integer->char lst))) |