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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkbase.java.in
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
Portions of this code are covered under the VTK copyright.
See VTKCopyright.txt or http://www.kitware.com/VTKCopyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
package InsightToolkit;
import java.util.StringTokenizer;
/**
* A class used to load shared libs. It must be used to be able to pass
* options to dlopen() on some systems.
* I will first search in the build tree, then in the install treee, and finally
* in the the standard paths of the system (PATH on windows, LD_LIBRARY_PATH on
* linux, DYDL_LYBRARY_PATH on mac os x, ...)
*/
public class itkbase
{
private static String buildDir = "@ITK_JAVA_BUILD_DIR@";
private static String installDir = "@ITK_JAVA_INSTALL_DIR@";
private static String libDir = "/InsightToolkit.jar must be in CLASSPATH";
static
{
// Detect whether we are in the build or install tree.
String sep = System.getProperty("path.separator");
String classpath = System.getProperty("java.class.path");
StringTokenizer tokenizer = new StringTokenizer(classpath, sep);
while(tokenizer.hasMoreTokens())
{
String dir = tokenizer.nextToken();
if(dir.endsWith("InsightToolkit.jar") &&
(new java.io.File(dir)).exists())
{
int index = dir.lastIndexOf("InsightToolkit.jar");
String self = dir.substring(0, index);
if((new java.io.File(self+"itk_build_tree.mark")).exists())
{
libDir = buildDir;
break;
}
else
{
libDir = dir.substring(0, index-1)+installDir;
break;
}
}
}
// Load JavaCWD helper code.
sep = System.getProperty("file.separator");
String lib = System.mapLibraryName("SwigRuntimeJava");
String libPath = libDir + sep + lib;
if( (new java.io.File(libPath)).exists() )
{
System.load(libPath);
}
else
{
// must use the name for System.loadLibrary()
System.loadLibrary("SwigRuntimeJava");
}
}
// Method called by wrapper code to load native libraries.
public static void LoadLibrary(String name)
{
// Change to directory containing libraries so dependents are found.
String old = JavaCWD.GetCWD();
JavaCWD.SetCWD(libDir);
String sep = System.getProperty("file.separator");
String lib = System.mapLibraryName(name);
String libPath = libDir + sep + lib;
if( (new java.io.File(libPath)).exists() )
{
JavaCWD.Load(libPath);
System.load(libPath);
}
else
{
// System.loadLibrary() create the lib name by itself, but not JavaCWD.Load()
// so one must get lib and the other name
JavaCWD.Load(lib);
System.loadLibrary(name);
}
JavaCWD.SetCWD(old);
}
}
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