Pascal Bourguignon make patch http://sourceforge.net/mailarchive/forum.php?thread_id=8889229&forum_id=...

I test it - it is work! :)

Please, append it.

Thanks!

File strings.diff ========================================================= --- /src/strings.lisp Fri Oct 7 03:32:50 2005 +++ /src/strings.lisp Fri Nov 4 23:56:57 2005 @@ -33,6 +33,7 @@ ;;; and vice versa. Currently this is blithely ignorant of encoding ;;; and assumes characters can fit in 8 bits.

+#-clisp (defun lisp-string-to-foreign (string ptr size) "Copy at most SIZE-1 characters from a Lisp STRING to PTR. The foreign string will be null-terminated." @@ -42,6 +43,7 @@ do (setf (%mem-ref ptr :unsigned-char (post-incf i)) (char-code char)) finally (setf (%mem-ref ptr :unsigned-char i) 0)))

+#-clisp (defun foreign-string-to-lisp (ptr &optional (size most-positive-fixnum) (null-terminated-p t)) "Copy at most SIZE characters from PTR into a Lisp string. @@ -52,6 +54,41 @@ for code = (mem-ref ptr :unsigned-char i) until (and null-terminated-p (zerop code)) do (write-char (code-char code) s))))) + +#+clisp +(defun lisp-string-to-foreign (string ptr size) + "Copy at most SIZE-1 characters from a Lisp STRING to PTR. +The foreign string will be null-terminated." + (decf size) + (loop + :with bytes = (ext:convert-string-to-bytes string custom:*foreign-encoding*) + :with i = 0 + :for byte :across bytes + :while (< i size) + :do (setf (%mem-ref ptr :unsigned-char (post-incf i)) byte) + :finally (setf (%mem-ref ptr :unsigned-char i) 0))) + +#+clisp +(defun clength (ptr size) + (loop + :for i :from 0 :below size + :do (when (zerop (mem-ref ptr :unsigned-char i)) + (return-from clength i)) + :finally (return-from clength size))) + +#+clisp +(defun foreign-string-to-lisp (ptr &optional (size most-positive-fixnum) + (null-terminated-p t)) + "Copy at most SIZE characters from PTR into a Lisp string. +If PTR is a null pointer, returns nil." + (unless (null-ptr-p ptr) + (loop + :with clen = (if null-terminated-p (clength ptr size) size) + :with bytes = (make-array clen :element-type '(unsigned-byte 8)) + :for i fixnum from 0 below clen + :do (setf (aref bytes i) (mem-ref ptr :unsigned-char i)) + :finally (return (ext:convert-string-from-bytes bytes + custom:*foreign-encoding*)))))

;;;# Using Foreign Strings