r2755: move files

[clsql.git] / uffi / clsql-uffi.cl

diff --git a/uffi/clsql-uffi.cl b/uffi/clsql-uffi.cl
new file mode 100644 (file)
index 0000000..2d1cd94
--- /dev/null
+++ b/uffi/clsql-uffi.cl
@@ -0,0 +1,103 @@
+;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name:          clsql-uffi.cl
+;;;; Purpose:       Common functions for interfaces using UFFI
+;;;; Programmers:   Kevin M. Rosenberg
+;;;; Date Started:  Mar 2002
+;;;;
+;;;; $Id: clsql-uffi.cl,v 1.1 2002/09/18 07:50:01 kevin Exp $
+;;;;
+;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
+;;;;
+;;;; CLSQL users are granted the rights to distribute and use this software
+;;;; as governed by the terms of the Lisp Lesser GNU Public License
+;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
+;;;; *************************************************************************
+
+(declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
+(in-package :clsql-uffi)
+
+
+(defun canonicalize-type-list (types auto-list)
+  "Ensure a field type list meets expectations"
+  (let ((length-types (length types))
+       (new-types '()))
+    (loop for i from 0 below (length auto-list)
+         do
+         (if (>= i length-types)
+             (push t new-types) ;; types is shorted than num-fields
+             (push
+              (case (nth i types)
+                (:int
+                 (case (nth i auto-list)
+                   (:int32
+                    :int32)
+                   (:int64
+                    :int64)
+                   (t
+                    t)))
+                (:double
+                 (case (nth i auto-list)
+                   (:double
+                    :double)
+                   (t
+                    t)))
+                (:int32
+                 (if (eq :int32 (nth i auto-list))
+                     :int32
+                   t))
+                (:int64
+                 (if (eq :int64 (nth i auto-list))
+                     :int64
+                   t))
+                (t
+                 t))
+              new-types)))
+    (nreverse new-types)))
+
+(uffi:def-function "atoi"
+    ((str (* :unsigned-char)))
+  :returning :int)
+
+(uffi:def-function "atol"
+    ((str (* :unsigned-char)))
+  :returning :long)
+
+(uffi:def-function "atof"
+    ((str (* :unsigned-char)))
+  :returning :double)
+
+(uffi:def-function "atol64"
+    ((str (* :unsigned-char))
+     (high32 (* :int)))
+  :returning :unsigned-int)
+
+(uffi:def-constant +2^32+ 4294967296)
+(uffi:def-constant +2^32-1+ (1- +2^32+))
+
+(defmacro make-64-bit-integer (high32 low32)
+  `(+ ,low32 (* ,high32 +2^32+)))
+
+(defmacro split-64-bit-integer (int64)
+  `(values (ash ,int64 -32) (logand ,int64 +2^32-1+)))
+
+(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)))))
+      (t
+       (uffi:convert-from-foreign-string char-ptr)))))