;;;; Programmers: Kevin M. Rosenberg
;;;; Date Started: Mar 2002
;;;;
-;;;; $Id: clsql-uffi.lisp,v 1.1 2002/09/30 10:19:24 kevin Exp $
+;;;; $Id: clsql-uffi.lisp,v 1.16 2003/05/16 18:02:43 kevin Exp $
;;;;
;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
;;;;
(defmacro split-64-bit-integer (int64)
`(values (ash ,int64 -32) (logand ,int64 +2^32-1+)))
+(defvar +ascii-N-value+ (char-code #\N))
+(defvar +ascii-U-value+ (char-code #\U))
+
+(uffi:def-type char-ptr-def (* :unsigned-char))
+
+(defun char-ptr-points-to-null (char-ptr)
+ "Returns T if foreign character pointer refers to 'NULL' string. Only called for numeric entries"
+ ;; Uses short cut and returns T if first character is #\N. It should
+ ;; never be non-numeric
+ (declare (type char-ptr-def char-ptr))
+ (let ((char (uffi:ensure-char-character
+ (uffi:deref-pointer char-ptr :char))))
+ (eql char #\N)))
+
(defun convert-raw-field (char-ptr types index)
(let ((type (if (listp types)
(nth index types)
types)))
- (case type
- (:double
- (atof char-ptr))
- ((or :int32 :int)
- (atoi char-ptr))
- (:int64
- (uffi:with-foreign-object (high32-ptr :int)
- (let ((low32 (atol64 char-ptr high32-ptr))
- (high32 (uffi:deref-pointer high32-ptr :int)))
- (if (zerop high32)
- low32
- (make-64-bit-integer high32 low32)))))
+ (cond
+ ((and (or (eq type :double) (eq type :int32) (eq type :int)
+ (eq type :int64))
+ (char-ptr-points-to-null char-ptr))
+ nil)
(t
- (uffi:convert-from-foreign-string char-ptr)))))
+ (case type
+ (:double
+ (atof char-ptr))
+ ((or :int32 :int)
+ (atoi char-ptr))
+ (:int64
+ (uffi:with-foreign-object (high32-ptr :int)
+ (let ((low32 (atol64 char-ptr high32-ptr))
+ (high32 (uffi:deref-pointer high32-ptr :int)))
+ (if (zerop high32)
+ low32
+ (make-64-bit-integer high32 low32)))))
+ (t
+ ;; Choose optimized routine
+ #-(or cmu sbcl)
+ (native-to-string char-ptr)
+ #+(or cmu sbcl)
+ (uffi:convert-from-foreign-string char-ptr)))))))
+
+
+(uffi:def-function "strlen"
+ ((str (* :unsigned-char)))
+ :returning :unsigned-int)
+
+(defun native-to-string (s)
+ (declare (optimize (speed 3) (space 0) (safety 0) (compilation-speed 0))
+ (type char-ptr-def s))
+ (let* ((len (strlen s))
+ (str (make-string len)))
+ (declare (fixnum len)
+ (simple-string str))
+ (do ((i 0))
+ ((= i len))
+ (declare (fixnum i))
+ (setf (schar str i)
+ (code-char (uffi:deref-array s '(:array :unsigned-char) i)))
+ (incf i))
+ str))
+
+#-allegro
+(defun native-to-string (s)
+ (declare (optimize (speed 3) (space 0) (safety 0) (compilation-speed 0))
+ (type char-ptr-def s))
+ (let* ((len (strlen s))
+ (str (make-string len)))
+ (declare (fixnum len)
+ (simple-string str))
+ (do ((i 0))
+ ((= i len))
+ (declare (fixnum i))
+ (setf (schar str i)
+ (code-char (uffi:deref-array s '(:array :unsigned-char) i)))
+ (incf i))
+ str))
+
+#+allegro
+(excl:ics-target-case
+ (:+ics
+ (defun native-to-string (s)
+ (declare (optimize (speed 3) (space 0) (safety 0) (compilation-speed 0))
+ (type char-ptr-def s))
+ (let* ((len (strlen s))
+ (str (make-string len)))
+ (declare (fixnum len)
+ (simple-string str))
+ (do ((i 0))
+ ((= i len))
+ (declare (fixnum i))
+ (setf (schar str i)
+ (code-char (uffi:deref-array s '(:array :unsigned-char) i)))
+ (incf i))
+ str)))
+ (:-ics
+ (defun native-to-string (s)
+ (declare (optimize (speed 3) (space 0) (safety 0) (compilation-speed 0))
+ (type char-ptr-def s))
+ (let* ((len (strlen s))
+ (str (make-string len)))
+ (declare (fixnum len)
+ (type (simple-array (signed-byte 32) (*)) str))
+ (do ((i 0))
+ ((= i len4))
+ (declare (fixnum i))
+ (setf (aref (the (simple-array (signed-byte 32) (*)) str) i)
+ (uffi:deref-array s '(:array :signed-int) i))
+ (incf i))
+ (do ((i (* 4 len4)))
+ ((= i len))
+ (declare (fixnum i))
+ (setf (aref (the (simple-array (signed-byte 8) (*)) str) i)
+ (uffi:deref-array s '(:array :unsigned-char) i))
+ (incf i))
+ str))
+
+ #+ignore
+ (defun native-to-string (s)
+ (declare (optimize (speed 3) (space 0) (safety 0) (compilation-speed 0))
+ (type char-ptr-def s))
+ (let* ((len (strlen s))
+ (str (make-string len)))
+ (declare (fixnum len)
+ (type (simple-array (unsigned-byte 8) (*)) str))
+ (do ((i 0))
+ ((= i len))
+ (declare (fixnum i))
+ (setf (aref str i) (uffi:deref-array s '(:array :unsigned-char) i))
+ (incf i))
+ str))))