some refactorings

src/main/java/CLI.java

@@ -4,8 +4,8 @@
  * that can be found in the LICENSE file.
  */
 
-import de.neemann.digital.cli.CLIException;
-import de.neemann.digital.cli.Muxer;
+import de.neemann.digital.cli.cli.CLIException;
+import de.neemann.digital.cli.cli.Muxer;
 
 /**
  * Entry point for the CLI interface

src/main/java/de/neemann/digital/cli/CLITester.java

@@ -5,6 +5,9 @@
  */
 package de.neemann.digital.cli;
 
+import de.neemann.digital.cli.cli.Argument;
+import de.neemann.digital.cli.cli.BasicCommand;
+import de.neemann.digital.cli.cli.CLIException;
 import de.neemann.digital.lang.Lang;
 import de.neemann.digital.testing.CommandLineTester;
 
@@ -12,9 +15,9 @@ import java.io.File;
 import java.io.IOException;
 
 /**
- * Used to test circuits
+ * Used to test circuits.
  */
-public class CLITester extends SimpleCommand {
+public class CLITester extends BasicCommand {
     private final Argument<String> circ;
     private final Argument<String> test;
 

src/main/java/de/neemann/digital/cli/SVGExport.java

@@ -5,6 +5,10 @@
  */
 package de.neemann.digital.cli;
 
+import de.neemann.digital.cli.cli.Argument;
+import de.neemann.digital.cli.cli.ArgumentKey;
+import de.neemann.digital.cli.cli.BasicCommand;
+import de.neemann.digital.cli.cli.CLIException;
 import de.neemann.digital.core.element.ElementAttributes;
 import de.neemann.digital.core.element.Key;
 import de.neemann.digital.draw.elements.Circuit;
@@ -23,7 +27,7 @@ import java.io.OutputStream;
 /**
  * CLI svg exporter
  */
-public class SVGExport extends SimpleCommand {
+public class SVGExport extends BasicCommand {
     private final ElementAttributes attr;
     private final Argument<String> digFile;
     private final Argument<String> svgFile;

src/main/java/de/neemann/digital/cli/StatsExport.java

@@ -5,6 +5,9 @@
  */
 package de.neemann.digital.cli;
 
+import de.neemann.digital.cli.cli.Argument;
+import de.neemann.digital.cli.cli.BasicCommand;
+import de.neemann.digital.cli.cli.CLIException;
 import de.neemann.digital.core.Model;
 import de.neemann.digital.core.NodeException;
 import de.neemann.digital.core.stats.Statistics;
@@ -21,7 +24,7 @@ import java.io.*;
 /**
  * CLI stats exporter
  */
-public class StatsExport extends SimpleCommand {
+public class StatsExport extends BasicCommand {
     private final Argument<String> digFile;
     private final Argument<String> csvFile;
 
@@ -46,13 +49,12 @@ public class StatsExport extends SimpleCommand {
             Model model = new ModelCreator(circuit, library).createModel(false);
             Statistics stats = new Statistics(model);
 
-            String outName;
+            BufferedWriter writer;
             if (csvFile.isSet())
-                outName = csvFile.get();
+                writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(csvFile.get())));
             else
-                outName = digFile.get() + ".csv";
+                writer = new BufferedWriter(new OutputStreamWriter(System.out));
 
-            BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outName)));
             new CSVWriter(stats.getTableModel()).writeTo(writer);
 
         } catch (IOException | ElementNotFoundException | PinException | NodeException e) {

src/main/java/de/neemann/digital/cli/cli/Argument.java

@@ -3,7 +3,7 @@
  * Use of this source code is governed by the GPL v3 license
  * that can be found in the LICENSE file.
  */
-package de.neemann.digital.cli;
+package de.neemann.digital.cli.cli;
 
 import de.neemann.digital.lang.Lang;
 

src/main/java/de/neemann/digital/cli/cli/ArgumentBase.java

@@ -3,7 +3,7 @@
  * Use of this source code is governed by the GPL v3 license
  * that can be found in the LICENSE file.
  */
-package de.neemann.digital.cli;
+package de.neemann.digital.cli.cli;
 
 /**
  * The base class of all arguments

src/main/java/de/neemann/digital/cli/cli/ArgumentKey.java

@@ -3,7 +3,7 @@
  * Use of this source code is governed by the GPL v3 license
  * that can be found in the LICENSE file.
  */
-package de.neemann.digital.cli;
+package de.neemann.digital.cli.cli;
 
 import de.neemann.digital.core.element.ElementAttributes;
 import de.neemann.digital.core.element.Key;

src/main/java/de/neemann/digital/cli/cli/BasicCommand.java

@@ -3,7 +3,7 @@
  * Use of this source code is governed by the GPL v3 license
  * that can be found in the LICENSE file.
  */
-package de.neemann.digital.cli;
+package de.neemann.digital.cli.cli;
 
 import de.neemann.digital.lang.Lang;
 
@@ -13,10 +13,9 @@ import java.util.Arrays;
 import java.util.Iterator;
 
 /**
- * E simple executable command
+ * A simple executable command
  */
-public abstract class SimpleCommand implements CLICommand {
-    private final String name;
+public abstract class BasicCommand extends NamedCommand {
     private final ArrayList<ArgumentBase<?>> arguments;
 
     /**
@@ -24,8 +23,8 @@ public abstract class SimpleCommand implements CLICommand {
      *
      * @param name the name of the command
      */
-    public SimpleCommand(String name) {
-        this.name = name;
+    public BasicCommand(String name) {
+        super(name);
         arguments = new ArrayList<>();
     }
 
@@ -42,17 +41,10 @@ public abstract class SimpleCommand implements CLICommand {
         return argument;
     }
 
-    /**
-     * @return the name of the argument
-     */
-    public String getName() {
-        return name;
-    }
-
     @Override
     public void printDescription(PrintStream out, String prefix) {
         StringBuilder sb = new StringBuilder();
-        sb.append(name);
+        sb.append(getName());
         for (ArgumentBase<?> a : arguments) {
             sb.append(" ");
             sb.append(a);
@@ -63,7 +55,7 @@ public abstract class SimpleCommand implements CLICommand {
 
         prefix += "  ";
         out.print(prefix + "  ");
-        printString(out, prefix + "  ", Lang.get("cli_help_" + name));
+        printString(out, prefix + "  ", Lang.get("cli_help_" + getName()));
         out.print(prefix);
         out.println(Lang.get("cli_options"));
 
@@ -71,7 +63,7 @@ public abstract class SimpleCommand implements CLICommand {
         for (ArgumentBase<?> a : arguments) {
             out.println(prefix + "  " + a.toStringDef());
             out.print(prefix + "    ");
-            printString(out, prefix + "    ", a.getDescription(name));
+            printString(out, prefix + "    ", a.getDescription(getName()));
         }
 
     }

src/main/java/de/neemann/digital/cli/cli/CLICommand.java

@@ -3,7 +3,7 @@
  * Use of this source code is governed by the GPL v3 license
  * that can be found in the LICENSE file.
  */
-package de.neemann.digital.cli;
+package de.neemann.digital.cli.cli;
 
 import java.io.PrintStream;
 

src/main/java/de/neemann/digital/cli/cli/CLIException.java

@@ -3,7 +3,7 @@
  * Use of this source code is governed by the GPL v3 license
  * that can be found in the LICENSE file.
  */
-package de.neemann.digital.cli;
+package de.neemann.digital.cli.cli;
 
 import java.io.PrintStream;
 
@@ -43,7 +43,7 @@ public class CLIException extends Exception {
     }
 
     /**
-     * Pronts a error message to the stream
+     * Prints a error message to the stream
      *
      * @param out the print stream
      */

src/main/java/de/neemann/digital/cli/cli/Muxer.java

@@ -3,8 +3,11 @@
  * Use of this source code is governed by the GPL v3 license
  * that can be found in the LICENSE file.
  */
-package de.neemann.digital.cli;
+package de.neemann.digital.cli.cli;
 
+import de.neemann.digital.cli.CLITester;
+import de.neemann.digital.cli.SVGExport;
+import de.neemann.digital.cli.StatsExport;
 import de.neemann.digital.lang.Lang;
 
 import java.io.PrintStream;
@@ -14,7 +17,7 @@ import java.util.HashMap;
 /**
  * The command muxer
  */
-public class Muxer implements CLICommand {
+public class Muxer extends NamedCommand {
     /**
      * The main muxer
      */
@@ -24,7 +27,6 @@ public class Muxer implements CLICommand {
             .addCommand(new StatsExport());
 
     private final HashMap<String, CLICommand> commands;
-    private final String name;
 
     private Muxer() {
         this("java -cp Digital.jar CLI");
@@ -36,7 +38,7 @@ public class Muxer implements CLICommand {
      * @param name the name of the muxer
      */
     public Muxer(String name) {
-        this.name = name;
+        super(name);
         this.commands = new HashMap<>();
     }
 
@@ -46,7 +48,7 @@ public class Muxer implements CLICommand {
      * @param command the command
      * @return this for chained calls
      */
-    public Muxer addCommand(SimpleCommand command) {
+    public Muxer addCommand(NamedCommand command) {
         return addCommand(command.getName(), command);
     }
 
@@ -65,7 +67,7 @@ public class Muxer implements CLICommand {
     @Override
     public void printDescription(PrintStream out, String prefix) {
         out.print(prefix);
-        out.print(name);
+        out.print(getName());
         out.println();
         for (CLICommand c : commands.values())
             c.printDescription(out, prefix + "  ");
@@ -78,7 +80,7 @@ public class Muxer implements CLICommand {
 
         CLICommand command = commands.get(args[0]);
         if (command == null)
-            throw new CLIException(Lang.get("cli_command_N_hasNoSubCommand_N", name, args[0]), 101);
+            throw new CLIException(Lang.get("cli_command_N_hasNoSubCommand_N", getName(), args[0]), 101);
 
         command.execute(Arrays.copyOfRange(args, 1, args.length));
     }

src/main/java/de/neemann/digital/cli/cli/NamedCommand.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2020 Helmut Neemann.
+ * Use of this source code is governed by the GPL v3 license
+ * that can be found in the LICENSE file.
+ */
+package de.neemann.digital.cli.cli;
+
+/**
+ * The base class of all named commands
+ */
+public abstract class NamedCommand implements CLICommand {
+    private final String name;
+
+    /**
+     * Create a new instance
+     *
+     * @param name the name of the command
+     */
+    public NamedCommand(String name) {
+        this.name = name;
+    }
+
+    /**
+     * @return the name of the command
+     */
+    public String getName() {
+        return name;
+    }
+}

src/main/java/de/neemann/digital/cli/cli/package-info.java

@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2020 Helmut Neemann.
+ * Use of this source code is governed by the GPL v3 license
+ * that can be found in the LICENSE file.
+ */
+
+/**
+ * The classes needed to implement the command line interface
+ */
+package de.neemann.digital.cli.cli;

src/main/java/de/neemann/digital/testing/CommandLineTester.java

@@ -28,7 +28,7 @@ public class CommandLineTester {
 
     private final ElementLibrary library;
     private final ShapeFactory shapeFactory;
-    private Circuit circuit;
+    private final Circuit circuit;
     private PrintStream out = System.out;
     private ArrayList<TestCase> testCases;
     private int testsPassed;

src/test/java/de/neemann/digital/cli/ArgumentTest.java

@@ -5,6 +5,8 @@
  */
 package de.neemann.digital.cli;
 
+import de.neemann.digital.cli.cli.Argument;
+import de.neemann.digital.cli.cli.CLIException;
 import junit.framework.TestCase;
 
 public class ArgumentTest extends TestCase {
@@ -39,6 +41,14 @@ public class ArgumentTest extends TestCase {
         }
     }
 
+    public void testToggle() throws CLIException {
+        Argument<Boolean> a = new Argument<>("flag", false, false);
+        assertTrue(a.isBool());
+        assertFalse(a.get());
+        a.toggle();
+        assertTrue(a.get());
+    }
+
     public void testInteger() throws CLIException {
         Argument<Integer> a = new Argument<>("n", 2, false);
         assertEquals(2, (int) a.get());

src/test/java/de/neemann/digital/cli/BasicCommandTest.java

@@ -5,11 +5,14 @@
  */
 package de.neemann.digital.cli;
 
+import de.neemann.digital.cli.cli.Argument;
+import de.neemann.digital.cli.cli.BasicCommand;
+import de.neemann.digital.cli.cli.CLIException;
 import junit.framework.TestCase;
 
-public class SimpleCommandTest extends TestCase {
+public class BasicCommandTest extends TestCase {
 
-    private static class TestCommand extends SimpleCommand {
+    private static class TestCommand extends BasicCommand {
         private boolean wasExecuted;
 
         private TestCommand() {

src/test/java/de/neemann/digital/cli/MuxerTest.java

@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2020 Helmut Neemann.
+ * Use of this source code is governed by the GPL v3 license
+ * that can be found in the LICENSE file.
+ */
+package de.neemann.digital.cli;
+
+import de.neemann.digital.cli.cli.Argument;
+import de.neemann.digital.cli.cli.BasicCommand;
+import de.neemann.digital.cli.cli.CLIException;
+import de.neemann.digital.cli.cli.Muxer;
+import junit.framework.TestCase;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+
+public class MuxerTest extends TestCase {
+
+    /**
+     * Creates the documentation.
+     * Used to make the maven build fail, if a language key is missing.
+     */
+    public void testDocu() {
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        Muxer.MAIN_MUXER.printDescription(new PrintStream(baos), "");
+        assertTrue(baos.toByteArray().length > 100);
+    }
+
+    public void testErrors() throws CLIException {
+        TestCommand tc = new TestCommand();
+        Muxer m = new Muxer("test").addCommand(tc);
+
+        try {
+            m.execute(new String[]{"add"});
+            fail();
+        } catch (CLIException e) {
+            assertTrue(true);
+        }
+
+        m.execute(new String[]{"add", "-arg", "zz"});
+        assertEquals("zz", tc.arg.get());
+
+        try {
+            m.execute(new String[]{"add", "-foo", "zz"});
+            fail();
+        } catch (CLIException e) {
+            assertTrue(true);
+        }
+
+        try {
+            m.execute(new String[]{"sub"});
+            fail();
+        } catch (CLIException e) {
+            assertTrue(true);
+        }
+
+        try {
+            m.execute(new String[]{});
+            fail();
+        } catch (CLIException e) {
+            assertTrue(true);
+        }
+    }
+
+    public void testNesting() throws CLIException {
+        TestCommand tc = new TestCommand();
+        Muxer m = new Muxer("main")
+                .addCommand(new Muxer("arith")
+                        .addCommand(tc));
+
+        m.execute(new String[]{"arith", "add", "-arg", "tt"});
+
+        assertTrue(tc.wasExecuted);
+    }
+
+    private static class TestCommand extends BasicCommand {
+        private final Argument<String> arg;
+        private boolean wasExecuted = false;
+
+        public TestCommand() {
+            super("add");
+            arg = addArgument(new Argument<>("arg", "def", false));
+        }
+
+
+        @Override
+        public void printDescription(PrintStream out, String prefix) {
+        }
+
+        @Override
+        protected void execute() throws CLIException {
+            wasExecuted = true;
+        }
+
+    }
+}