1 files changed, 280 insertions, 0 deletions
diff --git a/libraries/launcher/org/multimc/Utils.java b/libraries/launcher/org/multimc/Utils.java
new file mode 100644
index 00000000..32cf7919
--- /dev/null
+++ b/libraries/launcher/org/multimc/Utils.java
@@ -0,0 +1,280 @@
+/*
+ * Copyright 2012-2014 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.multimc;
+
+import java.io.*;
+import java.io.File;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.*;
+import java.util.Arrays;
+import java.util.Enumeration;
+import java.util.List;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipFile;
+
+public class Utils
+{
+	/**
+	 * Combine two parts of a path.
+	 *
+	 * @param path1
+	 * @param path2
+	 * @return the paths, combined
+	 */
+	public static String combine(String path1, String path2)
+	{
+		File file1 = new File(path1);
+		File file2 = new File(file1, path2);
+		return file2.getPath();
+	}
+
+	/**
+	 * Join a list of strings into a string using a separator!
+	 *
+	 * @param strings   the string list to join
+	 * @param separator the glue
+	 * @return the result.
+	 */
+	public static String join(List<String> strings, String separator)
+	{
+		StringBuilder sb = new StringBuilder();
+		String sep = "";
+		for (String s : strings)
+		{
+			sb.append(sep).append(s);
+			sep = separator;
+		}
+		return sb.toString();
+	}
+
+	/**
+	 * Adds the specified library to the classpath
+	 *
+	 * @param s the path to add
+	 * @throws Exception
+	 */
+	public static void addToClassPath(String s) throws Exception
+	{
+		File f = new File(s);
+		URL u = f.toURI().toURL();
+		URLClassLoader urlClassLoader = (URLClassLoader) ClassLoader.getSystemClassLoader();
+		Class urlClass = URLClassLoader.class;
+		Method method = urlClass.getDeclaredMethod("addURL", new Class[]{URL.class});
+		method.setAccessible(true);
+		method.invoke(urlClassLoader, new Object[]{u});
+	}
+
+	/**
+	 * Adds many libraries to the classpath
+	 *
+	 * @param jars the paths to add
+	 */
+	public static boolean addToClassPath(List<String> jars)
+	{
+		boolean pure = true;
+		// initialize the class path
+		for (String jar : jars)
+		{
+			try
+			{
+				Utils.addToClassPath(jar);
+			} catch (Exception e)
+			{
+				System.err.println("Unable to load: " + jar);
+				e.printStackTrace(System.err);
+				pure = false;
+			}
+		}
+		return pure;
+	}
+
+	/**
+	 * Adds the specified path to the java library path
+	 *
+	 * @param pathToAdd the path to add
+	 * @throws Exception
+	 */
+	@Deprecated
+	public static void addLibraryPath(String pathToAdd) throws Exception
+	{
+		final Field usrPathsField = ClassLoader.class.getDeclaredField("usr_paths");
+		usrPathsField.setAccessible(true);
+
+		//get array of paths
+		final String[] paths = (String[]) usrPathsField.get(null);
+
+		//check if the path to add is already present
+		for (String path : paths)
+		{
+			if (path.equals(pathToAdd))
+			{
+				return;
+			}
+		}
+
+		//add the new path
+		final String[] newPaths = Arrays.copyOf(paths, paths.length + 1);
+		newPaths[newPaths.length - 1] = pathToAdd;
+		usrPathsField.set(null, newPaths);
+	}
+
+	/**
+	 * Finds a field that looks like a Minecraft base folder in a supplied class
+	 *
+	 * @param mc the class to scan
+	 */
+	public static Field getMCPathField(Class<?> mc)
+	{
+		Field[] fields = mc.getDeclaredFields();
+
+		for (Field f : fields)
+		{
+			if (f.getType() != File.class)
+			{
+				// Has to be File
+				continue;
+			}
+			if (f.getModifiers() != (Modifier.PRIVATE + Modifier.STATIC))
+			{
+				// And Private Static.
+				continue;
+			}
+			return f;
+		}
+		return null;
+	}
+
+	/**
+	 * Log to the MultiMC console
+	 *
+	 * @param message A String containing the message
+	 * @param level   A String containing the level name. See MinecraftLauncher::getLevel()
+	 */
+	public static void log(String message, String level)
+	{
+		// Kinda dirty
+		String tag = "!![" + level + "]!";
+		System.out.println(tag + message.replace("\n", "\n" + tag));
+	}
+
+	public static void log(String message)
+	{
+		log(message, "MultiMC");
+	}
+
+	public static void log()
+	{
+		System.out.println();
+	}
+
+	/**
+	 * Pushes bytes from in to out. Closes both streams no matter what.
+	 * @param in the input stream
+	 * @param out the output stream
+	 * @throws IOException
+	 */
+	private static void copyStream(InputStream in, OutputStream out) throws IOException
+	{
+		try
+		{
+		byte[] buffer = new byte[4096];
+		int len;
+
+		while((len = in.read(buffer)) >= 0)
+			out.write(buffer, 0, len);
+		} finally
+		{
+			in.close();
+			out.close();
+		}
+	}
+
+	/**
+	 * Replace a 'target' string 'suffix' with 'replacement'
+	 */
+	public static String replaceSuffix (String target, String suffix, String replacement)
+	{
+		if (!target.endsWith(suffix))
+		{
+			return target;
+		}
+		String prefix = target.substring(0, target.length() - suffix.length());
+		return prefix + replacement;
+	}
+
+	/**
+	 * Unzip zip file with natives 'source' into the folder 'targetFolder'
+	 *
+	 * Contains a hack for OSX. Yay.
+	 * @param source
+	 * @param targetFolder
+	 * @throws IOException
+	 */
+	public static void unzipNatives(File source, File targetFolder) throws IOException
+	{
+		ZipFile zip = new ZipFile(source);
+
+		boolean applyHacks = false;
+		String[] javaVersionElements = System.getProperty("java.version").split("[.\\-+]");
+		int major = Integer.parseInt(javaVersionElements[0]);
+		if(major == 1)
+		{
+			major = Integer.parseInt(javaVersionElements[1]);
+		}
+		if (major >= 8)
+		{
+			applyHacks = true;
+		}
+
+		try
+		{
+			Enumeration entries = zip.entries();
+
+			while (entries.hasMoreElements())
+			{
+				ZipEntry entry = (ZipEntry) entries.nextElement();
+
+				String entryName = entry.getName();
+				String fileName = entryName;
+				if(applyHacks)
+				{
+					fileName = replaceSuffix(entryName, ".jnilib", ".dylib");
+				}
+				File targetFile = new File(targetFolder, fileName);
+				if (targetFile.getParentFile() != null)
+				{
+					targetFile.getParentFile().mkdirs();
+				}
+
+				if (entry.isDirectory())
+					continue;
+
+				copyStream(zip.getInputStream(entry), new BufferedOutputStream(new FileOutputStream(targetFile)));
+			}
+		} finally
+		{
+			zip.close();
+		}
+	}
+}
+