Follow-up to #126.

- Fix the XDG directory flag that got removed with JarSplice. To enable XDG directories, set the 'Use-XDG' property in either build file to 'true'.
- Always re-build jars in the Gradle script (disable "up to date" for the task).
- Delete JarSplicePlus.jar since it's no longer being used.

Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>

README.md

@@ -40,22 +40,19 @@ the song menu.
 ## Building
 opsu! is distributed as both a Maven and Gradle project.
 
+### Maven
+Maven builds are built to the `target` directory.
+* To run the project, execute the Maven goal `compile`.
+* To create a single executable JAR file, execute the Maven goal `package -Djar`.
+  This will compile a jar to `target/opsu-${version}.jar` with the libraries,
+  resources and natives packed inside the jar.
+
 ### Gradle
 Gradle builds are built to the `build` directory.
 * To run the project, execute the Gradle task `run`.
-* To create a single executable JAR file, execute the Gradle task
-  `build`. This will compile a jar to `build/libs/opsu-${version}.jar` with
-  the libraries, resources and natives packed inside the jar.
-  
-### Maven
-Maven builds are built to the `target` directory.
-* To run the project, execute the Maven goal `compile exec:exec`.
-* To create a single executable JAR file, execute the Maven goal
-  `install -Djar`.  This will link the LWJGL native libraries using a
-  [modified version](https://github.com/itdelatrisu/JarSplicePlus) of
-  [JarSplice](http://ninjacave.com/jarsplice), which is included in the
-  `tools` directory in both its original and modified forms.  The resulting
-  file will be located in `target/opsu-${version}-runnable.jar`.
+* To create a single executable JAR file, execute the Gradle task `build`.
+  This will compile a jar to `build/libs/opsu-${version}.jar` with the libraries,
+  resources and natives packed inside the jar.
 
 ## Credits
 This software was created by Jeffrey Han 

build.gradle

@@ -12,6 +12,8 @@ version = '0.10.1'
 mainClassName = 'itdelatrisu.opsu.Opsu'
 buildDir = new File(rootProject.projectDir, "build/")
 
+def useXDG = 'false'
+
 sourceCompatibility = 1.7
 targetCompatibility = 1.7
 
@@ -43,8 +45,6 @@ dependencies {
 	compile 'org.apache.commons:commons-compress:1.9'
 	compile 'org.tukaani:xz:1.5'
 	compile 'com.github.jponge:lzma-java:1.3'
-
-
 }
 
 def nativePlatforms = ['windows', 'linux', 'osx']
@@ -84,7 +84,8 @@ jar {
 	manifest {
 		attributes 'Implementation-Title': 'opsu!',
 				'Implementation-Version': version,
-				'Main-Class': mainClassName
+				'Main-Class': mainClassName,
+				'Use-XDG': useXDG
 	}
 
 	duplicatesStrategy = DuplicatesStrategy.EXCLUDE
@@ -92,6 +93,8 @@ jar {
 
 	from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
 	exclude '**/Thumbs.db'
+
+	outputs.upToDateWhen { false }
 }
 
 run {

pom.xml

@@ -9,6 +9,7 @@
 		<timestamp>${maven.build.timestamp}</timestamp>
 		<maven.build.timestamp.format>yyyy-MM-dd HH:mm</maven.build.timestamp.format>
 		<mainClassName>itdelatrisu.opsu.Opsu</mainClassName>
+		<useXDG>false</useXDG>
 	</properties>
 	<build>
 		<sourceDirectory>src</sourceDirectory>
@@ -107,7 +108,10 @@
 					</filters>
 					<transformers>
 						<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
-							<mainClass>${mainClassName}</mainClass>
+							<manifestEntries>
+								<Main-Class>${mainClassName}</Main-Class>
+								<Use-XDG>${useXDG}</Use-XDG>
+							</manifestEntries>
 						</transformer>
 					</transformers>
 					<createDependencyReducedPom>false</createDependencyReducedPom>

src/itdelatrisu/opsu/NativeLoader.java

@@ -23,9 +23,6 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.security.CodeSource;
 import java.util.Enumeration;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
@@ -47,19 +44,11 @@ public class NativeLoader {
 		if (!NATIVE_DIR.exists())
 			NATIVE_DIR.mkdir();
 
-		CodeSource src = NativeLoader.class.getProtectionDomain().getCodeSource();
-		if (src != null) {
-			URI jar = null;
-			try {
-				jar = src.getLocation().toURI();
-			} catch (URISyntaxException e) {
-				e.printStackTrace();
+		JarFile jarFile = Utils.getJarFile();
+		if (jarFile == null)
 			return;
-			}
 
-			JarFile jarFile = new JarFile(new File(jar), false);
 		Enumeration<JarEntry> entries = jarFile.entries();
-
 		while (entries.hasMoreElements()) {
 			JarEntry e = entries.nextElement();
 			if (e == null)
@@ -82,7 +71,6 @@ public class NativeLoader {
 
 		jarFile.close();
 	}
-	}
 
 	/**
 	 * Returns whether the given file name is a native file for the current operating system.

src/itdelatrisu/opsu/Opsu.java

@@ -18,12 +18,16 @@
 
 package itdelatrisu.opsu;
 
-import itdelatrisu.opsu.audio.MusicController;
-import itdelatrisu.opsu.db.DBController;
-import itdelatrisu.opsu.downloads.DownloadList;
-import itdelatrisu.opsu.downloads.Updater;
-import itdelatrisu.opsu.states.*;
-import itdelatrisu.opsu.ui.UI;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.PrintStream;
+import java.lang.reflect.Field;
+import java.net.InetAddress;
+import java.net.ServerSocket;
+import java.net.UnknownHostException;
+
 import org.newdawn.slick.Color;
 import org.newdawn.slick.GameContainer;
 import org.newdawn.slick.SlickException;
@@ -35,11 +39,20 @@ import org.newdawn.slick.util.FileSystemLocation;
 import org.newdawn.slick.util.Log;
 import org.newdawn.slick.util.ResourceLoader;
 
-import java.io.*;
-import java.lang.reflect.Field;
-import java.net.InetAddress;
-import java.net.ServerSocket;
-import java.net.UnknownHostException;
+import itdelatrisu.opsu.audio.MusicController;
+import itdelatrisu.opsu.db.DBController;
+import itdelatrisu.opsu.downloads.DownloadList;
+import itdelatrisu.opsu.downloads.Updater;
+import itdelatrisu.opsu.states.ButtonMenu;
+import itdelatrisu.opsu.states.DownloadsMenu;
+import itdelatrisu.opsu.states.Game;
+import itdelatrisu.opsu.states.GamePauseMenu;
+import itdelatrisu.opsu.states.GameRanking;
+import itdelatrisu.opsu.states.MainMenu;
+import itdelatrisu.opsu.states.OptionsMenu;
+import itdelatrisu.opsu.states.SongMenu;
+import itdelatrisu.opsu.states.Splash;
+import itdelatrisu.opsu.ui.UI;
 
 /**
  * Main class.
@@ -143,7 +156,6 @@ public class Opsu extends StateBasedGame {
 			Log.warn("Failed to set 'sys_paths' field.", e);
 		}
 
-
 		// set the resource paths
 		ResourceLoader.addResourceLocation(new FileSystemLocation(new File("./res/")));
 

src/itdelatrisu/opsu/Options.java

@@ -18,13 +18,6 @@
 
 package itdelatrisu.opsu;
 
-import itdelatrisu.opsu.audio.MusicController;
-import itdelatrisu.opsu.beatmap.Beatmap;
-import itdelatrisu.opsu.skins.Skin;
-import itdelatrisu.opsu.skins.SkinLoader;
-import itdelatrisu.opsu.ui.Fonts;
-import itdelatrisu.opsu.ui.UI;
-
 import java.io.BufferedReader;
 import java.io.BufferedWriter;
 import java.io.File;
@@ -38,6 +31,9 @@ import java.util.Date;
 import java.util.HashMap;
 import java.util.Locale;
 import java.util.concurrent.TimeUnit;
+import java.util.jar.Attributes;
+import java.util.jar.JarFile;
+import java.util.jar.Manifest;
 
 import org.lwjgl.input.Keyboard;
 import org.newdawn.slick.GameContainer;
@@ -48,10 +44,20 @@ import org.newdawn.slick.util.FileSystemLocation;
 import org.newdawn.slick.util.Log;
 import org.newdawn.slick.util.ResourceLoader;
 
+import itdelatrisu.opsu.audio.MusicController;
+import itdelatrisu.opsu.beatmap.Beatmap;
+import itdelatrisu.opsu.skins.Skin;
+import itdelatrisu.opsu.skins.SkinLoader;
+import itdelatrisu.opsu.ui.Fonts;
+import itdelatrisu.opsu.ui.UI;
+
 /**
  * Handles all user options.
  */
 public class Options {
+	/** Whether to use XDG directories. */
+	private static final boolean USE_XDG = checkXDGFlag();
+
 	/** The config directory. */
 	private static final File CONFIG_DIR = getXDGBaseDir("XDG_CONFIG_HOME", ".config");
 
@@ -120,15 +126,35 @@ public class Options {
 	/** Port binding. */
 	private static int port = 49250;
 
+	/**
+	 * Returns whether the XDG flag in the manifest (if any) is set to "true".
+	 * @return true if XDG directories are enabled, false otherwise
+	 */
+	private static boolean checkXDGFlag() {
+		JarFile jarFile = Utils.getJarFile();
+		if (jarFile == null)
+			return false;
+		try {
+			Manifest manifest = jarFile.getManifest();
+			if (manifest == null)
+				return false;
+			Attributes attributes = manifest.getMainAttributes();
+			String value = attributes.getValue("Use-XDG");
+			return (value != null && value.equalsIgnoreCase("true"));
+		} catch (IOException e) {
+			return false;
+		}
+	}
+
 	/**
 	 * Returns the directory based on the XDG base directory specification for
-	 * Unix-like operating systems, only if the system property "XDG" has been defined.
+	 * Unix-like operating systems, only if the "XDG" flag is enabled.
 	 * @param env the environment variable to check (XDG_*_*)
 	 * @param fallback the fallback directory relative to ~home
 	 * @return the XDG base directory, or the working directory if unavailable
 	 */
 	private static File getXDGBaseDir(String env, String fallback) {
-		if (System.getProperty("XDG") == null)
+		if (!USE_XDG)
 			return new File("./");
 
 		String OS = System.getProperty("os.name").toLowerCase();

src/itdelatrisu/opsu/Utils.java

@@ -18,15 +18,6 @@
 
 package itdelatrisu.opsu;
 
-import itdelatrisu.opsu.audio.SoundController;
-import itdelatrisu.opsu.audio.SoundEffect;
-import itdelatrisu.opsu.beatmap.HitObject;
-import itdelatrisu.opsu.downloads.Download;
-import itdelatrisu.opsu.downloads.DownloadNode;
-import itdelatrisu.opsu.replay.PlaybackSpeed;
-import itdelatrisu.opsu.ui.Fonts;
-import itdelatrisu.opsu.ui.UI;
-
 import java.awt.image.BufferedImage;
 import java.io.BufferedInputStream;
 import java.io.BufferedReader;
@@ -48,6 +39,7 @@ import java.util.Arrays;
 import java.util.Date;
 import java.util.List;
 import java.util.Scanner;
+import java.util.jar.JarFile;
 
 import javax.imageio.ImageIO;
 
@@ -66,6 +58,15 @@ import org.newdawn.slick.util.Log;
 
 import com.sun.jna.platform.FileUtils;
 
+import itdelatrisu.opsu.audio.SoundController;
+import itdelatrisu.opsu.audio.SoundEffect;
+import itdelatrisu.opsu.beatmap.HitObject;
+import itdelatrisu.opsu.downloads.Download;
+import itdelatrisu.opsu.downloads.DownloadNode;
+import itdelatrisu.opsu.replay.PlaybackSpeed;
+import itdelatrisu.opsu.ui.Fonts;
+import itdelatrisu.opsu.ui.UI;
+
 /**
  * Contains miscellaneous utilities.
  */
@@ -564,8 +565,25 @@ public class Utils {
 		return Opsu.class.getResource(String.format("%s.class", Opsu.class.getSimpleName())).toString().startsWith("jar:");
 	}
 
+	/**
+	 * Returns the JarFile for the application.
+	 * @return the JAR file, or null if it could not be determined
+	 */
+	public static JarFile getJarFile() {
+		if (!isJarRunning())
+			return null;
+
+		try {
+			return new JarFile(new File(Opsu.class.getProtectionDomain().getCodeSource().getLocation().toURI()), false);
+		} catch (URISyntaxException | IOException e) {
+			Log.error("Could not determine the JAR file.", e);
+			return null;
+		}
+	}
+
 	/**
 	 * Returns the directory where the application is being run.
+	 * @return the directory, or null if it could not be determined
 	 */
 	public static File getRunningDirectory() {
 		try {

src/itdelatrisu/opsu/objects/curves/Curve.java

@@ -150,6 +150,7 @@ public abstract class Curve {
 	 * @param i the control point index
 	 */
 	public float getY(int i) { return (i == 0) ? y : sliderY[i - 1]; }
+
 	/**
 	 * Discards the slider cache (only used for mmsliders).
 	 */