Fixes issue with missing license headers

src/main/java/com/akathist/maven/plugins/launch4j/Launch4jMojo.java

@@ -19,12 +19,12 @@
  */
 package com.akathist.maven.plugins.launch4j;
 
+import com.akathist.maven.plugins.launch4j.tools.ResourceIO;
 import net.sf.launch4j.Builder;
 import net.sf.launch4j.BuilderException;
 import net.sf.launch4j.config.Config;
 import net.sf.launch4j.config.ConfigPersister;
 import net.sf.launch4j.config.ConfigPersisterException;
-
 import org.apache.maven.execution.MavenSession;
 import org.apache.maven.plugin.AbstractMojo;
 import org.apache.maven.plugin.MojoExecutionException;
@@ -81,7 +81,7 @@ public class Launch4jMojo extends AbstractMojo {
     private String launch4jGroupId;
 
     // intentionally non-static non-final so it can be hacked with reflection if someone really needs to
-    private String DEF_REQADMMAN_RES = "META-INF/resources/manifest-requireAdminRights-v1.xml";
+    private String DEF_REQADMMAN_RES = "META-INF/resources/manifest-require_admin_rights-v1.xml";
 
     // intentionally non-static non-final so it can be hacked with reflection if someone really needs to
     private String DEF_REQADMMAN_FILE = "target/classes/META-INF/manifest-requireAdminRights.xml";
@@ -371,7 +371,7 @@ private void doExecute() throws MojoExecutionException {
 
         if (!disableVersionInfoDefaults) {
             try {
-                if(versionInfo == null) {
+                if (versionInfo == null) {
                     versionInfo = new VersionInfo();
                 }
                 versionInfo.setLog(getLog());
@@ -412,7 +412,7 @@ private void doExecute() throws MojoExecutionException {
                     }
 
                     if (icon != null) {
-                    	c.setIcon(icon);
+                        c.setIcon(icon);
                     }
 
                     if (versionInfo != null) {
@@ -536,11 +536,11 @@ private void processRequireAdminRights() throws MojoExecutionException {
                 metaInfDir.mkdir();
 
                 File manFile = new File(basedir, DEF_REQADMMAN_FILE);
-                byte[] manBytes = FileUtils.readResourceAsBytes(DEF_REQADMMAN_RES);
+                byte[] manBytes = ResourceIO.readResourceAsBytes(DEF_REQADMMAN_RES);
 
-                FileUtils.writeBytesIfDiff(manFile, manBytes);
+                ResourceIO.writeBytesIfDiff(manFile, manBytes);
 
-                byte[] savedBytes = FileUtils.readBytes(manFile);
+                byte[] savedBytes = ResourceIO.readBytes(manFile);
                 if (Arrays.equals(manBytes, savedBytes)) {
                     getLog().info("Manifest file written to " + manFile);
                 }

src/main/java/com/akathist/maven/plugins/launch4j/tools/ResourceIO.java

@@ -0,0 +1,89 @@
+/*
+ * 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 com.akathist.maven.plugins.launch4j.tools;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Arrays;
+
+final public class ResourceIO {
+
+    private static final int DEFAULT_BUFFER_SIZE = 4 * 1024;
+
+    private ResourceIO() {
+        // avoids creating an instance of this class
+    }
+
+    private static byte[] readAllBytes(InputStream is) throws IOException {
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+
+        byte[] buf = new byte[DEFAULT_BUFFER_SIZE];
+        int bytesRead;
+        while ((bytesRead = is.read(buf)) != -1) {
+            baos.write(buf, 0, bytesRead);
+        }
+
+        return baos.toByteArray();
+    }
+
+    public static byte[] readResourceAsBytes(String resName) throws IOException {
+        ClassLoader cl = Thread.currentThread().getContextClassLoader();
+        try (InputStream is = cl.getResourceAsStream(resName)) {
+            if (is == null) {
+                throw new IOException("Resource not found: " + resName);
+            }
+            return readAllBytes(is);
+        }
+    }
+
+    public static void writeBytesIfDiff(File outFile, byte[] outBytes) throws IOException {
+        if (outFile.exists()) {
+            byte[] existingBytes = readBytes(outFile);
+            if (Arrays.equals(outBytes, existingBytes)) {
+                return;
+            }
+        }
+        writeBytes(outFile, outBytes);
+    }
+
+    public static byte[] readBytes(File inFile) throws IOException {
+        try (
+                FileInputStream fis = new FileInputStream(inFile);
+                BufferedInputStream bis = new BufferedInputStream(fis)
+        ) {
+            return readAllBytes(bis);
+        }
+    }
+
+    public static void writeBytes(File outFile, byte[] outBytes) throws IOException {
+        try (
+                FileOutputStream fos = new FileOutputStream(outFile, false);
+                BufferedOutputStream bos = new BufferedOutputStream(fos)
+        ) {
+            bos.write(outBytes);
+            bos.flush();
+        }
+    }
+}

src/main/resources/META-INF/resources/manifest-require_admin_rights-v1.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<!--
+/*
+ * 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.
+ */
+-->
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
+    <trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
+        <security>
+            <requestedPrivileges>
+                <requestedExecutionLevel level="requireAdministrator" uiAccess="false"/>
+            </requestedPrivileges>
+        </security>
+    </trustInfo>
+</assembly>