SubServers-2/SubServers.Bungee/src/net/ME1312/SubServers/Bungee/Library/Compatibility/JNA.java

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package net.ME1312.SubServers.Bungee.Library.Compatibility;
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import net.ME1312.SubServers.Bungee.SubAPI;
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import com.google.common.io.Resources;
import net.md_5.bungee.api.ProxyServer;
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import java.io.File;
import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.logging.Logger;
import static java.util.logging.Level.SEVERE;
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/**
* JNA Library Loader Class
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*/
public class JNA {
private JNA() {}
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private static ClassLoader JNA = null;
private static final String JNA_VERSION = "5.2.0";
private static final String JNA_DOWNLOAD = "https://oss.sonatype.org/service/local/repositories/releases/content/net/java/dev/jna/$1/" + JNA_VERSION + "/$1-" + JNA_VERSION + ".jar";
/**
* Get/Load JNA Library
*
* @return JNA ClassLoader
*/
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@SuppressWarnings("deprecation")
public static ClassLoader get() {
if (JNA == null) {
boolean announced = false;
Logger log = ProxyServer.getInstance().getLogger();
File library = new File(SubAPI.getInstance().getInternals().dir, "SubServers/Cache/Libraries");
File jna = new File(library, "jna-" + JNA_VERSION + ".jar");
jna.getParentFile().mkdirs();
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if (!jna.exists()) {
announced = true;
log.info(">> Downloading JNA v" + JNA_VERSION);
try (FileOutputStream fin = new FileOutputStream(jna)) {
Resources.copy(new URL(JNA_DOWNLOAD.replace("$1", "jna")), fin);
} catch (Throwable e) {
jna.delete();
e.printStackTrace();
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}
}
File platform = new File(library, "jna-platform-" + JNA_VERSION + ".jar");
platform.getParentFile().mkdirs();
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if (!platform.exists()) {
if (!announced) log.info(">> Downloading JNA platform v" + JNA_VERSION);
announced = true;
try (FileOutputStream fin = new FileOutputStream(platform)) {
Resources.copy(new URL(JNA_DOWNLOAD.replace("$1", "jna-platform")), fin);
} catch (Throwable e) {
platform.delete();
e.printStackTrace();
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}
}
if (jna.exists() && platform.exists()) {
if (announced) log.info(">> JNA download complete");
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try {
JNA = new URLClassLoader(new URL[]{jna.toURI().toURL(), platform.toURI().toURL()});
} catch (Throwable e) {
log.log(SEVERE, ">> Couldn't load JNA:", e);
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}
} else {
log.log(SEVERE, ">> Couldn't load JNA:", new FileNotFoundException());
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}
}
return JNA;
}
}