Add new director mojo

RELEASE_NOTES.md

@@ -6,6 +6,7 @@ This page describes the noteworthy improvements provided by each release of Ecli
 
 ### backports:
 
+- new director mojo
 - support for PDE Api Tools Annotations
 - api tools fixes
 - new `tycho-eclipse-plugin`

tycho-core/src/main/java/org/eclipse/tycho/p2/CommandLineArguments.java

@@ -0,0 +1,89 @@
+/*******************************************************************************
+ * Copyright (c) 2012, 2014 SAP SE and others.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *    SAP SE - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.tycho.p2;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.StringJoiner;
+import java.util.stream.Collectors;
+
+public class CommandLineArguments {
+    List<String> arguments = new ArrayList<>();
+
+    public void add(String flag) {
+        arguments.add(flag);
+    }
+
+    public void add(String parameterName, String parameterValue) {
+        arguments.add(parameterName);
+        arguments.add(parameterValue);
+    }
+
+    public void addNonNull(String parameterName, String parameterValue) {
+        if (parameterValue != null) {
+            arguments.add(parameterName);
+            arguments.add(parameterValue);
+        }
+    }
+
+    public void addUnlessEmpty(String parameterName, StringJoiner parameterValue) {
+        if (parameterValue.length() > 0) {
+            add(parameterName, parameterValue.toString());
+        }
+    }
+
+    public void addNotEmpty(String parameterName, List<String> list, CharSequence seperator) {
+        if (list.isEmpty()) {
+            return;
+        }
+        add(parameterName, list.stream().collect(Collectors.joining(seperator)));
+    }
+
+    public void addNotEmpty(String parameterName, Map<String, String> propertyMap, CharSequence keyValueSeparator,
+            CharSequence seperator) {
+        if (propertyMap.isEmpty()) {
+            return;
+        }
+        add(parameterName,
+                propertyMap.entrySet().stream().map(entry -> entry.getKey() + keyValueSeparator + entry.getValue())
+                        .collect(Collectors.joining(seperator)));
+    }
+
+    public void addFlagIfTrue(String flag, boolean value) {
+        if (value) {
+            add(flag);
+        }
+    }
+
+    public void addNonNull(String parameterName, File file) {
+        if (file != null) {
+            add(parameterName, file.getAbsolutePath());
+        }
+    }
+
+    public List<String> asList() {
+        return new ArrayList<>(arguments);
+    }
+
+    public String[] toArray() {
+        return arguments.toArray(String[]::new);
+    }
+
+    @Override
+    public String toString() {
+        return arguments.stream().collect(Collectors.joining(" "));
+    }
+
+}

tycho-core/src/main/java/org/eclipse/tycho/p2/tools/director/shared/AbstractDirectorApplicationCommand.java

@@ -14,7 +14,6 @@
 
 import java.io.File;
 import java.net.URI;
-import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -24,6 +23,7 @@
 import org.eclipse.tycho.ArtifactType;
 import org.eclipse.tycho.TargetEnvironment;
 import org.eclipse.tycho.core.resolver.shared.DependencySeed;
+import org.eclipse.tycho.p2.CommandLineArguments;
 
 /**
  * Base class for calling a p2 director via command line arguments.
@@ -142,26 +142,4 @@ protected List<String> getDirectorApplicationArguments() {
         return args.asList();
     }
 
-    private static class CommandLineArguments {
-        List<String> arguments = new ArrayList<>();
-
-        void add(String flag) {
-            arguments.add(flag);
-        }
-
-        void add(String parameterName, String parameterValue) {
-            arguments.add(parameterName);
-            arguments.add(parameterValue);
-        }
-
-        void addUnlessEmpty(String parameterName, StringJoiner parameterValue) {
-            if (parameterValue.length() > 0) {
-                add(parameterName, parameterValue.toString());
-            }
-        }
-
-        public List<String> asList() {
-            return new ArrayList<>(arguments);
-        }
-    }
 }

tycho-p2-director-plugin/pom.xml

@@ -87,6 +87,11 @@
 			<artifactId>tycho-core</artifactId>
 			<version>${project.version}</version>	
 		</dependency>
+		<dependency>
+			<groupId>org.eclipse.tycho</groupId>
+			<artifactId>tycho-p2-plugin</artifactId>
+			<version>${project.version}</version>	
+		</dependency>
 	</dependencies>
 
 	<build>