fix: improve return code management

src/net/sourceforge/plantuml/OptionPrint.java

@@ -62,13 +62,12 @@ public class OptionPrint {
 	static public void printTestDot() throws InterruptedException {
 		final List<String> result = new ArrayList<>();
 		final int errorCode = GraphvizUtils.addDotStatus(result, false);
-		for (String s : result) {
-			if (errorCode == 0) {
+		for (String s : result)
+			if (errorCode == 0)
 				System.out.println(s);
-			} else {
+			else
 				System.err.println(s);
-			}
-		}
+
 		exit(errorCode);
 	}
 
@@ -169,35 +168,34 @@ public class OptionPrint {
 	}
 
 	static private void exit(int errorCode) throws InterruptedException {
-		if (OptionFlags.getInstance().isSystemExit() || errorCode != 0) {
+		if (OptionFlags.getInstance().isSystemExit() || errorCode != 0)
 			System.exit(errorCode);
-		}
+
 		throw new InterruptedException("exit");
 	}
 
 	public static void printLicense() throws InterruptedException {
-		for (String s : License.getCurrent().getTextFull()) {
+		for (String s : License.getCurrent().getTextFull())
 			System.out.println(s);
-		}
-		exit(0);
+		System.exit(0);
 	}
 
 	public static void printVersion() throws InterruptedException {
 		System.out.println(Version.fullDescription());
 		System.out.println("(" + License.getCurrent() + " source distribution)");
-		for (String v : interestingProperties()) {
+		for (String v : interestingProperties())
 			System.out.println(v);
-		}
-		for (String v : interestingValues()) {
+
+		for (String v : interestingValues())
 			System.out.println(v);
-		}
+
 		System.out.println();
 		final List<String> result = new ArrayList<>();
 		final int errorCode = GraphvizUtils.addDotStatus(result, false);
-		for (String s : result) {
+		for (String s : result)
 			System.out.println(s);
-		}
-		exit(errorCode);
+
+		System.exit(0);
 	}
 
 	public static Collection<String> interestingProperties() {

src/net/sourceforge/plantuml/Run.java

@@ -87,14 +87,10 @@ public class Run {
 			throws NoPlantumlCompressionException, IOException, InterruptedException {
 		System.setProperty("log4j.debug", "false");
 		final long start = System.currentTimeMillis();
-		if (argsArray.length > 0 && argsArray[0].equalsIgnoreCase("-headless")) {
+		if (argsArray.length > 0 && argsArray[0].equalsIgnoreCase("-headless"))
 			System.setProperty("java.awt.headless", "true");
-		}
-//		if (argsArray.length > 0 && argsArray[0].equalsIgnoreCase("--de")) {
-//			debugGantt();
-//			return;
-//		}
 		saveCommandLine(argsArray);
+		
 		final Option option = new Option(argsArray);
 		ProgressBar.setEnable(option.isTextProgressBar());
 		if (OptionFlags.getInstance().isClipboardLoop()) {
@@ -156,9 +152,9 @@ public class Run {
 		}
 
 		forceOpenJdkResourceLoad();
-		if (option.getPreprocessorOutputMode() == OptionPreprocOutputMode.CYPHER) {
+		if (option.getPreprocessorOutputMode() == OptionPreprocOutputMode.CYPHER)
 			cypher = new LanguageDescriptor().getCypher();
-		}
+
 		final ErrorStatus error = ErrorStatus.init();
 		boolean forceQuit = false;
 		if (OptionFlags.getInstance().isGui()) {
@@ -170,9 +166,9 @@ public class Run {
 			File dir = null;
 			if (list.size() == 1) {
 				final File f = new File(list.get(0));
-				if (f.exists() && f.isDirectory()) {
+				if (f.exists() && f.isDirectory())
 					dir = f;
-				}
+
 			}
 			try {
 				new MainWindow(option, dir);
@@ -187,9 +183,9 @@ public class Run {
 			managePipe(option, error);
 			forceQuit = true;
 		} else if (option.isFailfast2()) {
-			if (option.isSplash()) {
+			if (option.isSplash())
 				Splash.createSplash();
-			}
+
 			final long start2 = System.currentTimeMillis();
 			option.setCheckOnly(true);
 			manageAllFiles(option, error);
@@ -198,14 +194,14 @@ public class Run {
 				final double duration = (System.currentTimeMillis() - start2) / 1000.0;
 				Log.error("Check Duration = " + duration + " seconds");
 			}
-			if (error.hasError() == false) {
+			if (error.hasError() == false)
 				manageAllFiles(option, error);
-			}
+
 			forceQuit = true;
 		} else {
-			if (option.isSplash()) {
+			if (option.isSplash())
 				Splash.createSplash();
-			}
+
 			manageAllFiles(option, error);
 			forceQuit = true;
 		}
@@ -216,16 +212,15 @@ public class Run {
 		}
 
 		if (OptionFlags.getInstance().isGui() == false) {
-			if (error.hasError() || error.isNoData()) {
+			if (error.hasError() || error.isNoData())
 				option.getStdrpt().finalMessage(error);
-			}
-			if (error.hasError()) {
-				System.exit(error.getExitCode());
-			}
 
-			if (forceQuit && OptionFlags.getInstance().isSystemExit()) {
+			if (error.hasError())
+				System.exit(error.getExitCode());
+
+			if (forceQuit && OptionFlags.getInstance().isSystemExit())
 				System.exit(0);
-			}
+
 		}
 	}
 

src/net/sourceforge/plantuml/core/UmlSource.java

@@ -159,6 +159,12 @@ final public class UmlSource {
 //		return Collections.unmodifiableCollection(rawSource).iterator();
 //	}
 
+	
+	@Deprecated()
+	public String getPlainString() {
+		return getPlainString("\n");
+	}
+
 	/**
 	 * Return the source as a single String.
 	 *