From 40902249f2739db0830d663704b4931e37ee0d52 Mon Sep 17 00:00:00 2001
From: "Kevin M. Rosenberg" <kevin@rosenberg.net>
Date: Tue, 9 Nov 2004 02:14:43 +0000
Subject: [PATCH] r10140: add sb-unicode patch

---
 src/strings.lisp | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/src/strings.lisp b/src/strings.lisp
index c63d943..b8965b1 100644
--- a/src/strings.lisp
+++ b/src/strings.lisp
@@ -299,7 +299,7 @@ that LW/CMU automatically converts strings from c-calls."
 	(setf (char result i) (code-char (system:sap-ref-8 sap i))))
       result)))
 
-#+sbcl
+#+(and sbcl (not sb-unicode))
 (defun sbcl-naturalize-cstring (sap &key length (null-terminated-p t))
   (declare (type sb-sys:system-area-pointer sap))
   (locally
@@ -322,6 +322,27 @@ that LW/CMU automatically converts strings from c-calls."
 				    (* length sb-vm:n-byte-bits))
       result)))
 
+#+(and sbcl sb-unicode)
+(defun sbcl-naturalize-cstring (sap &key length (null-terminated-p t))
+  (declare (type sb-sys:system-area-pointer sap))
+  (locally
+      (declare (optimize (speed 3) (safety 0)))
+      (cond
+        (null-terminated-p
+	 (let ((casted (sb-alien:cast
+			(sb-alien:sap-alien sap (* char)) sb-alien:c-string)))
+	   (if length
+	       (copy-seq (subseq casted 0 length))
+	       (copy-seq casted))))
+        (t
+         (let ((result (make-string length)))
+	   ;; this will not work in sb-unicode
+           (sb-kernel:copy-from-system-area sap 0
+                                            result (* sb-vm:vector-data-offset
+                                                      sb-vm:n-word-bits)
+                                            (* length sb-vm:n-byte-bits))
+           result)))))
+
 (eval-when (:compile-toplevel :load-toplevel :execute)
    (def-function "strlen"
      ((str (* :unsigned-char)))
-- 
2.34.1