com.github.maeda6uiui.mechtatel.natives.NativeLoaderUtils Maven / Gradle / Ivy
package com.github.maeda6uiui.mechtatel.natives;
import java.io.*;
import java.util.Objects;
/**
* Utility methods for native loader
*
* @author maeda6uiui
*/
public class NativeLoaderUtils {
/**
* Loads a native library contained in a JAR file.
*
* @param clazz Class to call {@link Class#getResourceAsStream(String)}
* @param filepath Filepath of the native library
* @throws IOException If it fails to load the native library
*/
public static void loadNativeLibFromJar(Class clazz, String filepath) throws IOException {
try (var bis = new BufferedInputStream(Objects.requireNonNull(clazz.getResourceAsStream(filepath)))) {
File tempFile = File.createTempFile("lib", ".mttlib");
tempFile.deleteOnExit();
try (var bos = new BufferedOutputStream(new FileOutputStream(tempFile))) {
var buffer = new byte[4096];
int bytesRead;
while ((bytesRead = bis.read(buffer)) != -1) {
bos.write(buffer, 0, bytesRead);
}
}
System.load(tempFile.getAbsolutePath());
}
}
}