1 files changed, 84 insertions, 0 deletions
diff --git a/src/main/java/net/sf/antcontrib/logic/AntFetch.java b/src/main/java/net/sf/antcontrib/logic/AntFetch.java
new file mode 100644
index 0000000..177bb9e
--- /dev/null
+++ b/src/main/java/net/sf/antcontrib/logic/AntFetch.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2001-2004 Ant-Contrib project.  All rights reserved.
+ *
+ * Licensed 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 net.sf.antcontrib.logic;
+
+import java.util.StringTokenizer;
+
+import org.apache.tools.ant.BuildException;
+import org.apache.tools.ant.Project;
+import org.apache.tools.ant.taskdefs.Ant;
+
+/**
+ * Subclass of CallTarget which allows us to fetch
+ * properties which are set in the scope of the called
+ * target, and set them in the scope of the calling target.
+ * Normally, these properties are thrown away as soon as the
+ * called target completes execution.
+ *
+ * @author     inger
+ * @author     Dale Anson, [email protected]
+ */
+public class AntFetch extends Ant {
+	/** the name of the property to fetch from the new project */
+	private String returnName = null;
+	
+	private ProjectDelegate fakeProject = null;
+
+	public void setProject(Project realProject) {
+		fakeProject = new ProjectDelegate(realProject);
+		super.setProject(fakeProject);
+	}
+
+	/**
+	 * Do the execution.
+	 *
+	 * @exception BuildException  Description of the Exception
+	 */
+	public void execute() throws BuildException {
+		super.execute();
+
+		// copy back the props if possible
+		if ( returnName != null ) {
+			StringTokenizer st = new StringTokenizer( returnName, "," );
+			while ( st.hasMoreTokens() ) {
+				String name = st.nextToken().trim();
+				String value = fakeProject.getSubproject().getUserProperty( name );
+				if ( value != null ) {
+					getProject().setUserProperty( name, value );
+				}
+				else {
+					value = fakeProject.getSubproject().getProperty( name );
+					if ( value != null ) {
+						getProject().setProperty( name, value );
+					}
+				}
+			}
+		}
+	}
+
+	/**
+	 * Set the property or properties that are set in the new project to be
+	 * transfered back to the original project. As with all properties, if the
+	 * property already exists in the original project, it will not be overridden
+	 * by a different value from the new project.
+	 *
+	 * @param r  the name of a property in the new project to set in the original
+	 *      project. This may be a comma separate list of properties.
+	 */
+	public void setReturn( String r ) {
+		returnName = r;
+	}	
+}