r10035:

[kmrcl.git] / strings.lisp

diff --git a/strings.lisp b/strings.lisp
index 0c5ae7c4ec47407e0e77b358a1bf4c713dee89b2..a9b3d0f9b320a95126b206348e852d812ea8a9b2 100644 (file)
--- a/strings.lisp
+++ b/strings.lisp
@@ -227,17 +227,20 @@ list of characters and replacement strings."
 (defun make-usb8-array (len)
   (make-array len :element-type '(unsigned-byte 8)))
 
 (defun make-usb8-array (len)
   (make-array len :element-type '(unsigned-byte 8)))
 

-(defun usb8-array-to-string (vec)
-  (declare (type (simple-array (unsigned-byte 8) (*)) vec))
-  (let* ((len (length vec))
+(defun usb8-array-to-string (vec &key (start 0) end)
+  (declare (type (simple-array (unsigned-byte 8) (*)) vec)
+          (fixnum start))
+  (unless end
+    (setq end (length vec)))
+  (let* ((len (- end start))

         (str (make-string len)))
     (declare (fixnum len)
             (simple-string str)
         (str (make-string len)))
     (declare (fixnum len)
             (simple-string str)

-            (optimize (speed 3)))
+            (optimize (speed 3) (safety 0)))

     (do ((i 0 (1+ i)))
        ((= i len) str)
       (declare (fixnum i))
     (do ((i 0 (1+ i)))
        ((= i len) str)
       (declare (fixnum i))

-      (setf (schar str i) (code-char (aref vec i))))))
+      (setf (schar str i) (code-char (aref vec (the fixnum (+ i start))))))))

 
 (defun string-to-usb8-array (str)
   (declare (simple-string str))
 
 (defun string-to-usb8-array (str)
   (declare (simple-string str))