X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=src%2Fstrings.lisp;h=0f01e97ba1245103f0c8f8b5affaaa3f0ef019dc;hb=8626fd8b0c42c7ecd107e3f4d1353b109ba8f9ad;hp=e4d67013a80a1db25ac52324fdf0ffe4993542bb;hpb=7177cf1ffcd71227b04934ae09188dd708ae3bb9;p=uffi.git

diff --git a/src/strings.lisp b/src/strings.lisp
index e4d6701..0f01e97 100644
--- a/src/strings.lisp
+++ b/src/strings.lisp
@@ -188,25 +188,33 @@ that LW/CMU automatically converts strings from c-calls."
   #+mcl
   `(if (ccl:%null-ptr-p ,obj)
      nil
-     (ccl:%get-cstring ,obj 0 ,@(if length (list length) nil)))
+    #+(and mcl (not openmcl)) (ccl:%get-cstring ,obj 0 ,@(if length (list length) nil))
+    #+openmcl (let ((str (ccl:%get-cstring ,obj)))
+		,(if length '(subseq str 0 length) 'str)))
   )
 
 
 (defmacro allocate-foreign-string (size &key (unsigned t))
-  #+(or cmu scl)
+  #+ignore
   (let ((array-def (gensym)))
     `(let ((,array-def (list 'alien:array 'c-call:char ,size)))
        (eval `(alien:cast (alien:make-alien ,,array-def) 
 			  ,(if ,unsigned 
 			       '(* (alien:unsigned 8))
 			     '(* (alien:signed 8)))))))
+
+  #+(or cmu scl)
+  `(alien:make-alien ,(if unsigned 
+			     '(alien:unsigned 8)
+			     '(alien:signed 8))
+    ,size)
+
   #+sbcl
-  (let ((array-def (gensym)))
-    `(let ((,array-def (list 'sb-alien:array 'char ,size)))
-       (eval `(sb-alien:cast (sb-alien:make-alien ,,array-def) 
-			  ,(if ,unsigned 
-			       '(* (sb-alien:unsigned 8))
-			     '(* (sb-alien:signed 8)))))))
+  `(sb-alien:make-alien ,(if unsigned 
+			     '(sb-alien:unsigned 8)
+			     '(sb-alien:signed 8))
+    ,size)
+
   #+lispworks
   `(fli:allocate-foreign-object :type 
 				,(if unsigned 
@@ -223,6 +231,15 @@ that LW/CMU automatically converts strings from c-calls."
   `(new-ptr ,size)
   )
 
+(defun foreign-string-length (foreign-string)
+  #+allegro `(ff:foreign-strlen ,foreign-string)
+  #-allegro
+  `(loop with size = 0
+    until (char= (deref-array ,foreign-string '(:array :unsigned-char) size) #\Null)
+    do (incf size)
+    finally return size))
+
+
 (defmacro with-foreign-string ((foreign-string lisp-string) &body body)
   (let ((result (gensym)))
     `(let* ((,foreign-string (convert-to-foreign-string ,lisp-string))
@@ -303,10 +320,10 @@ that LW/CMU automatically converts strings from c-calls."
 				    (* length sb-vm:n-byte-bits))
       result)))
 
-
-(def-function "strlen"
-    ((str (* :unsigned-char)))
-  :returning :unsigned-int)
+(eval-when (:compile-toplevel :load-toplevel :execute)
+   (def-function "strlen"
+     ((str (* :unsigned-char)))
+     :returning :unsigned-int))
 
 (def-type char-ptr-def (* :unsigned-char))