X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=contrib%2Fsb-posix%2Fmacros.lisp;h=882ac626889298a0969892adb72417579b189ece;hb=782a45c5d5000d7e86c83e7b303f15270b1e03c2;hp=d32bfe54468d8ac07707a27484f3bd11395828fd;hpb=84500b84beb8a03298beaf731d36faee5323b4d5;p=sbcl.git

diff --git a/contrib/sb-posix/macros.lisp b/contrib/sb-posix/macros.lisp
index d32bfe5..882ac62 100644
--- a/contrib/sb-posix/macros.lisp
+++ b/contrib/sb-posix/macros.lisp
@@ -1,26 +1,68 @@
 (in-package :sb-posix-internal)
 
+;;; some explanation may be necessary.  The namestring "[foo]" 
+;;; denotes a wild pathname.  When there's a file on the disk whose
+;;; Unix name is "[foo]", the appropriate CL namestring for it is
+;;; "\\[foo]".  So, don't call NAMESTRING, instead call a function
+;;; that gets us the Unix name
+(defun native-filename (pathname)
+  (let ((directory (pathname-directory pathname))
+	(name (pathname-name pathname))
+	(type (pathname-type pathname)))
+    (with-output-to-string (s nil :element-type 'base-char)
+      (etypecase directory
+	(string (write-string directory s))
+	(list
+	 (when (eq (car directory) :absolute)
+	   (write-char #\/ s))
+	 (dolist (piece (cdr directory))
+	   (etypecase piece
+	     (string (write-string piece s) (write-char #\/ s))))))
+      (etypecase name
+	(null)
+        (string (write-string name s)))
+      (etypecase type
+	(null)
+	(string (write-char #\. s) (write-string type s))))))
+
+(define-designator filename c-string
+  (pathname 
+   (native-filename (translate-logical-pathname filename)))
+  (string filename))
+
+(define-designator file-descriptor (integer 32)
+  (sb-impl::file-stream (sb-impl::fd-stream-fd file-descriptor))
+  (fixnum file-descriptor))
+
+(define-designator sap-or-nil sb-sys:system-area-pointer
+  (null (sb-sys:int-sap 0))
+  (sb-sys:system-area-pointer sap-or-nil))
+
 (defun lisp-for-c-symbol (s)
   (intern (substitute #\- #\_ (string-upcase s)) :sb-posix))
 
 (defmacro define-call (name return-type error-predicate &rest arguments)
   (let ((lisp-name (lisp-for-c-symbol name)))
-    `(progn
-      (export ',lisp-name :sb-posix)
-      (declaim (inline ,lisp-name))
-      (defun ,lisp-name ,(mapcar #'car arguments)
-	(let ((r (alien-funcall
-		  (extern-alien
-		   ,name
-		   (function ,return-type
-			     ,@(mapcar
-				(lambda (x)
-				  (get (cadr x) 'designator-type (cadr x)))
-				arguments)))
-		  ,@(mapcar (lambda (x)
-			      (if (get (cadr x) 'designator-type)
-				  `(,(intern (symbol-name (cadr x)) :sb-posix)
-				    ,(car x))
-				  (car x)))
-			    arguments))))
-	  (if (,error-predicate r) (syscall-error) r))))))
+    (if (sb-fasl::foreign-symbol-address-as-integer-or-nil name)
+	`(progn
+	  (export ',lisp-name :sb-posix)
+	  (declaim (inline ,lisp-name))
+	  (defun ,lisp-name ,(mapcar #'car arguments)
+	    (let ((r (alien-funcall
+		      (extern-alien
+		       ,name
+		       (function ,return-type
+				 ,@(mapcar
+				    (lambda (x)
+				      (gethash (cadr x) *designator-types* (cadr x)))
+				    arguments)))
+		      ,@(mapcar (lambda (x)
+				  (if (nth-value 1 (gethash (cadr x) *designator-types*))
+				      `(,(intern (symbol-name (cadr x)) :sb-posix)
+					,(car x))
+				      (car x)))
+				arguments))))
+	      (if (,error-predicate r) (syscall-error) r))))
+	`(progn
+	  (export ',lisp-name :sb-posix)
+	  (sb-int:style-warn "Didn't find definition for ~S" ,name)))))