-;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
+;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10; Package: UFFI -*-
;;;; *************************************************************************
;;;; FILE IDENTIFICATION
;;;;
;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Feb 2002
;;;;
-;;;; Copyright (c) 2002 Kevin M. Rosenberg
+;;;; $Id: libraries.cl,v 1.14 2002/04/06 19:53:08 kevin Exp $
;;;;
-;;;; $Id: libraries.cl,v 1.2 2002/03/10 20:01:55 kevin Exp $
+;;;; This file, part of UFFI, is Copyright (c) 2002 by Kevin M. Rosenberg
;;;;
-;;;; This file is part of the UFFI.
-;;;;
-;;;; UFFI is free software; you can redistribute it and/or modify
-;;;; it under the terms of the GNU General Public License (version 2) as
-;;;; published by the Free Software Foundation.
-;;;;
-;;;; UFFI is distributed in the hope that it will be useful,
-;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;;;; GNU General Public License for more details.
-;;;;
-;;;; You should have received a copy of the GNU General Public License
-;;;; along with UFFI; if not, write to the Free Software
-;;;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+;;;; UFFI 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)))
(defvar *loaded-libraries* nil
"List of foreign libraries loaded. Used to prevent reloading a library")
-(defun load-foreign-library (filename &key module supporting-libraries)
+(defun default-foreign-library-type ()
+ "Returns string naming default library type for platform"
+ #+(or win32 mswindows) "dll"
+ #-(or win32 mswindows) "so")
+
+(defun find-foreign-library (names directories &key types drive-letters)
+ "Looks for a foreign library. directories can be a single
+string or a list of strings of candidate directories. Use default
+library type if type is not specified."
+ (unless types
+ (setq types (default-foreign-library-type)))
+ (unless (listp types)
+ (setq types (list types)))
+ (unless (listp names)
+ (setq names (list names)))
+ (unless (listp directories)
+ (setq directories (list directories)))
+ #+(or win32 mswindows)
+ (unless (listp drive-letters)
+ (setq drive-letters (list drive-letters)))
+ #-(or win32 mswindows)
+ (setq drive-letters '(nil))
+ (dolist (drive-letter drive-letters)
+ (dolist (name names)
+ (dolist (dir directories)
+ (dolist (type types)
+ (let ((path (make-pathname
+ #+lispworks :host
+ #+lispworks (when drive-letter drive-letter)
+ #-lispworks :device
+ #-lispworks (when drive-letter drive-letter)
+ :name name
+ :type type
+ :directory
+ (etypecase dir
+ (pathname
+ (pathname-directory dir))
+ (list
+ dir)
+ (string
+ (pathname-directory
+ (parse-namestring dir)))))))
+ (when (probe-file path)
+ (return-from find-foreign-library path)))))))
+ nil)
+
+
+(defun load-foreign-library (filename &key module supporting-libraries
+ force-load)
#+allegro (declare (ignore module supporting-libraries))
#+lispworks (declare (ignore supporting-libraries))
#+cmu (declare (ignore module))
(when (and filename (probe-file filename))
- (if (find filename *loaded-libraries* :test #'string-equal)
+ (if (pathnamep filename) ;; ensure filename is a string to check if
+ (setq filename (namestring filename))) ; already loaded
+
+ (if (and (not force-load)
+ (find filename *loaded-libraries* :test #'string-equal))
t ;; return T, but don't reload library
(progn
- #+cmu (alien:load-foreign filename
+ #+cmu
+ (let ((type (pathname-type (parse-namestring filename))))
+ (if (equal type "so")
+ (sys::load-object-file filename)
+ (alien:load-foreign filename
:libraries
(convert-supporting-libraries-to-string
- supporting-libraries))
+ supporting-libraries))))
+
#+lispworks (fli:register-module module
- :connection-style :automatic
:real-name filename)
#+allegro (load filename)
- (push filename *loaded-libraries*))))
+ (push filename *loaded-libraries*)
+ t)))
)
(defun convert-supporting-libraries-to-string (libs)