From b6d455a02bd338e9dc0faa09d4d8177ecd8d569a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Petr=20Mr=C3=A1zek?= Date: Sun, 10 Apr 2016 15:53:05 +0200 Subject: NOISSUE reorganize and document libraries --- libraries/launcher/org/multimc/Utils.java | 280 ++++++++++++++++++++++++++++++ 1 file changed, 280 insertions(+) create mode 100644 libraries/launcher/org/multimc/Utils.java (limited to 'libraries/launcher/org/multimc/Utils.java') 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 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 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(); + } + } +} + -- cgit v1.2.3