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+;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10; Package: UFFI -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name: libraries.cl
+;;;; Purpose: UFFI source to load foreign libraries
+;;;; Programmers: Kevin M. Rosenberg and John DeSoi
+;;;; Date Started: Feb 2002
+;;;;
+;;;; $Id: libraries.cl,v 1.1 2002/08/02 14:39:12 kevin Exp $
+;;;;
+;;;; This file, part of UFFI, is Copyright (c) 2002 by Kevin M. Rosenberg
+;;;; and John DeSoi
+;;;;
+;;;; 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)))
+(in-package :uffi)
+
+(defvar *loaded-libraries* nil
+ "List of foreign libraries loaded. Used to prevent reloading a library")
+
+;in MCL calling this more than once for the same library does not do anything
+(defmacro load-foreign-library (filename &key module supporting-libraries)
+ (declare (ignore module supporting-libraries))
+ `(eval-when (:compile-toplevel :load-toplevel :execute)
+ (when (ccl:add-to-shared-library-search-path ,filename t)
+ (pushnew ,filename *loaded-libraries*))))
+
+;; Copied directly from main source without MCL specializations
+(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)
+
+
+;; Copied directly from main source without MCL specializations
+(defun default-foreign-library-type ()
+ "Returns string naming default library type for platform"
+ #+(or win32 mswindows) "dll"
+ #-(or win32 mswindows) "so")
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