102 lines
3.4 KiB
Java
102 lines
3.4 KiB
Java
package me.libraryaddict.disguise.utilities.reflection;
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import org.bukkit.entity.Entity;
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import java.io.File;
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import java.net.URL;
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import java.net.URLDecoder;
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import java.security.CodeSource;
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import java.util.ArrayList;
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import java.util.Enumeration;
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import java.util.Locale;
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import java.util.jar.JarEntry;
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import java.util.jar.JarFile;
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/**
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* User: Austin Date: 4/22/13 Time: 11:47 PM (c) lazertester
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*/
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// Code for this taken and slightly modified from
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// https://github.com/ddopson/java-class-enumerator
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public class ClassGetter {
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public static ArrayList<Class<?>> getClassesForPackage(String pkgname) {
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return getClassesForPackage(Entity.class, pkgname);
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}
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public static ArrayList<Class<?>> getClassesForPackage(Class runFrom, String pkgname) {
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ArrayList<Class<?>> classes = new ArrayList<>();
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// String relPath = pkgname.replace('.', '/');
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// Get a File object for the package
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CodeSource src = runFrom.getProtectionDomain().getCodeSource();
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if (src != null) {
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URL resource = src.getLocation();
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if (resource.getPath().toLowerCase(Locale.ENGLISH).endsWith(".jar")) {
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processJarfile(resource, pkgname, classes);
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} else {
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for (File f : new File(resource.getPath() + "/" + pkgname.replace(".", "/")).listFiles()) {
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if (!f.getName().endsWith(".class") || f.getName().contains("$")) {
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continue;
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}
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try {
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classes.add(Class.forName(pkgname + "." + f.getName().replace(".class", "")));
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}
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catch (ClassNotFoundException e) {
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e.printStackTrace();
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}
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}
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}
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}
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return classes;
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}
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private static Class<?> loadClass(String className) {
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try {
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return Class.forName(className);
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}
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catch (ClassNotFoundException e) {
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throw new RuntimeException("Unexpected ClassNotFoundException loading class '" + className + "'");
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}
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catch (NoClassDefFoundError e) {
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return null;
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}
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}
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private static void processJarfile(URL resource, String pkgname, ArrayList<Class<?>> classes) {
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try {
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String relPath = pkgname.replace('.', '/');
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String resPath = URLDecoder.decode(resource.getPath(), "UTF-8");
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String jarPath = resPath.replaceFirst("[.]jar[!].*", ".jar").replaceFirst("file:", "");
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JarFile jarFile = new JarFile(jarPath);
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Enumeration<JarEntry> entries = jarFile.entries();
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while (entries.hasMoreElements()) {
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JarEntry entry = entries.nextElement();
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String entryName = entry.getName();
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String className = null;
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if (entryName.endsWith(".class") && entryName.startsWith(relPath) &&
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entryName.length() > (relPath.length() + "/".length())) {
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className = entryName.replace('/', '.').replace('\\', '.').replace(".class", "");
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}
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if (className != null) {
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Class<?> c = loadClass(className);
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if (c != null) {
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classes.add(c);
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}
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}
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}
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jarFile.close();
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}
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catch (Exception ex) {
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ex.printStackTrace();
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}
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}
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}
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