U fix unix newline style

Author: fvarrui

src/main/java/io/github/fvarrui/javapackager/packagers/MacPackager.java

@@ -85,7 +85,7 @@ public File doCreateApp() throws MojoExecutionException {
 
 		// copies universalJavaApplicationStub startup file to boot java app
 		File appStubFile = new File(macOSFolder, "universalJavaApplicationStub");
-		FileUtils.copyResourceToFile("/mac/universalJavaApplicationStub", appStubFile);
+		FileUtils.copyResourceToFile("/mac/universalJavaApplicationStub", appStubFile, true);
 		appStubFile.setExecutable(true);
 
 		// creates and write the Info.plist file

src/main/java/io/github/fvarrui/javapackager/utils/FileUtils.java

@@ -14,9 +14,11 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.URL;
+import java.nio.charset.Charset;
 import java.nio.file.Files;
 import java.util.Arrays;
 import java.util.List;
+import java.util.function.Function;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
@@ -143,10 +145,28 @@ private static void copyStreamToFile(InputStream is, File dest) throws MojoExecu
         }
 	}
 
+	public static void copyResourceToFile(String resource, File dest, boolean unixStyleNewLines) throws MojoExecutionException  {
+		copyResourceToFile(resource, dest);
+		if (unixStyleNewLines) {
+			try {
+				processFileContent(dest, c -> c.replaceAll("\\r\\n", "\n").replaceAll("\\r", "\n"));
+			} catch (IOException e) {
+				throw new MojoExecutionException(e.getMessage(), e);
+			}
+		}
+	}
+	
+	public static void processFileContent(File dest, Function<String, String> function) throws IOException {
+		String content = org.apache.commons.io.FileUtils.readFileToString(dest, Charset.forName("UTF-8"));
+		content = function.apply(content);
+		org.apache.commons.io.FileUtils.writeStringToFile(dest, content, Charset.forName("UTF-8"));
+	}
+	
 	public static void copyResourceToFile(String resource, File dest) throws MojoExecutionException  {
 		Logger.info("Copying resource [" + resource + "] to file [" + dest + "]");		
 		copyStreamToFile(FileUtils.class.getResourceAsStream(resource), dest);
 	}
+
 
 	public static void createSymlink(File link, File target) throws MojoExecutionException {
 		Logger.info("Creating symbolic link [" + link + "] to [" + target + "]");		

src/main/java/io/github/fvarrui/javapackager/utils/VelocityUtils.java

@@ -47,7 +47,7 @@ public static void render(String templatePath, File output, Object info) throws
 		}
 	}
 
-	public static String render(String templatePath, Object info) throws MojoExecutionException {
+	private static String render(String templatePath, Object info) throws MojoExecutionException {
 		VelocityContext context = new VelocityContext();
 		context.put("features", new ArrayList<String>());
 		context.put("GUID", UUID.class);