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Simple class that extract and load the lwjgl 3 natives from your jar.
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| /** | |
| * This code is under the CC BY 4.0 license, http://creativecommons.org/licenses/by/4.0/ | |
| */ | |
| import java.io.File; | |
| import java.io.FileOutputStream; | |
| import java.io.IOException; | |
| import java.io.InputStream; | |
| import java.nio.channels.Channels; | |
| import java.nio.channels.ReadableByteChannel; | |
| /** | |
| * Load lwjgl natives from a folder inside your jar using modern java (1.8). | |
| * | |
| * @author Maël "Malobre" Obréjan | |
| */ | |
| public class NativesLoader { | |
| private static boolean isWindows = System.getProperty("os.name").contains("Windows"); | |
| private static boolean isLinux = System.getProperty("os.name").contains("Linux"); | |
| private static boolean isMac = System.getProperty("os.name").contains("Mac"); | |
| private static boolean is64Bit = System.getProperty("os.arch").equals("amd64") || System.getProperty("os.arch").equals("x86_64"); | |
| /** | |
| * Load lwjgl natives from the jar root folder | |
| * @throws Exception if we are unable to load the natives | |
| */ | |
| public static void load() throws Exception { | |
| load("/"); | |
| } | |
| /** | |
| * Load lwjgl natives from the specified jar folder | |
| * @param root the jar folder where the natives are located | |
| * @throws Exception if we are unable to load the natives | |
| */ | |
| public static void load(String root) throws Exception { | |
| File nativesDirectory = new File(System.getProperty("java.io.tmpdir"), "LWJGL-natives"); | |
| nativesDirectory.mkdirs(); | |
| if (isWindows) { | |
| extract(is64Bit ? "lwjgl.dll" : "lwjgl32.dll" , root, nativesDirectory); | |
| extract(is64Bit ? "OpenAL.dll" : "OpenAL32.dll", root, nativesDirectory); | |
| } else if (isLinux) { | |
| extract(is64Bit ? "liblwjgl.so" : "liblwjgl32.so" , root, nativesDirectory); | |
| extract(is64Bit ? "libopenal.so" : "libopenal32.so", root, nativesDirectory); | |
| } else if (isMac) { | |
| extract("liblwjgl.dylib" , root, nativesDirectory); | |
| extract("libopenal.dylib", root, nativesDirectory); | |
| } else { | |
| throw new Exception("Unable to detect the operating system, aborting lwjgl natives loading."); | |
| } | |
| System.setProperty("org.lwjgl.librarypath", nativesDirectory.getAbsolutePath()); | |
| } | |
| private static void extract(String file, String from, File to) throws Exception { | |
| try (InputStream inputStream = NativesLoader.class.getResourceAsStream(from + "/" + file)) { | |
| if (inputStream == null) | |
| throw new Exception("Cannot extract native '" + file + "'"); | |
| ReadableByteChannel rbc = Channels.newChannel(inputStream); | |
| File outputFile = new File(to, file); | |
| outputFile.createNewFile(); | |
| try (FileOutputStream fos = new FileOutputStream(outputFile)) { | |
| fos.getChannel().transferFrom(rbc, 0, 1 << 20); | |
| } | |
| } catch (IOException e) { | |
| e.printStackTrace(); | |
| } | |
| } | |
| } |
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