org.apache.cxf.common.util.ReflectionUtil Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.cxf.common.util;
import java.io.File;
import java.io.IOException;
import java.net.*;
import java.util.*;
public final class ReflectionUtil {
private ReflectionUtil() {
// intentionally empty
}
public static List getPackagesFromJar(File jarFile) throws IOException {
List packageNames = new ArrayList();
if (jarFile.isDirectory()) {
getPackageNamesFromDir(jarFile, jarFile, packageNames);
} else {
JarResource resource = new JarResource();
for (String item : resource.getJarContents(jarFile)) {
if (!item.endsWith(".class")) {
continue;
}
String packageName = getPackageName(item);
if (!StringUtils.isEmpty(packageName)
&& !packageNames.contains(packageName)) {
packageNames.add(packageName);
}
}
}
return packageNames;
}
private static void getPackageNamesFromDir(File base, File dir, List pkgs) {
boolean foundClass = false;
for (File file : dir.listFiles()) {
if (file.isDirectory()) {
getPackageNamesFromDir(base, file, pkgs);
} else if (!foundClass && file.getName().endsWith(".class")) {
foundClass = true;
String pkg = "";
file = dir;
while (!file.equals(base)) {
if (!"".equals(pkg)) {
pkg = "." + pkg;
}
pkg = file.getName() + pkg;
file = file.getParentFile();
}
if (!pkgs.contains(pkg)) {
pkgs.add(pkg);
}
}
}
}
private static String getPackageName(String clzName) {
if (clzName.indexOf("/") == -1) {
return null;
}
String packageName = clzName.substring(0, clzName.lastIndexOf("/"));
return packageName.replace("/", ".");
}
}