Initial fix for description problems.

If the original ProjectHelperImpl will be used, things will
work as before.

If not - Description will look into each target and do
whatever it is supposed to do.

PR:
Obtained from:
Submitted by:
Reviewed by:


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@273668 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/types/Description.java

@@ -54,6 +54,12 @@
 
 package org.apache.tools.ant.types;
 
+import org.apache.tools.ant.*;
+import org.apache.tools.ant.helper.ProjectHelperImpl;
+
+import java.util.Hashtable;
+import java.util.Enumeration;
+import java.util.Vector;
 
 
 /**
@@ -77,6 +83,13 @@ public class Description extends DataType {
      * Adds descriptive text to the project.
      */
     public void addText(String text) {
+
+        ProjectHelper ph=ProjectHelper.getProjectHelper();
+        if( ! ( ph instanceof ProjectHelperImpl )) {
+            // New behavior for delayed task creation. Description
+            // will be evaluated in Project.getDescription()
+            return;
+        }
         String currentDescription = getProject().getDescription();
         if (currentDescription == null) {
             getProject().setDescription(text);
@@ -84,4 +97,47 @@ public class Description extends DataType {
             getProject().setDescription(currentDescription + text);
         }
     }
+
+    public static String getDescription(Project project) {
+        StringBuffer description=new StringBuffer();
+        Vector targets=(Vector)project.getReference( "ant.targets");
+        for( int i=0; i<targets.size(); i++ ) {
+            Target t=(Target)targets.elementAt(i);
+            concatDescriptions(project, t, description);
+        }
+        return description.toString();
+    }
+
+    private static void concatDescriptions(Project project, Target t,
+                                           StringBuffer description)
+    {
+        if( t==null ) return;
+        Vector tasks= findElementInTarget(project, t, "description");
+        if( tasks==null ) return;
+        for( int i=0; i<tasks.size(); i++ ) {
+            Task task=(Task)tasks.elementAt(i);
+            if( ! ( task instanceof UnknownElement)) {
+                continue;
+            }
+            UnknownElement ue=((UnknownElement)task);
+            StringBuffer descComp=ue.getWrapper().getText();
+            if( descComp != null ) {
+                description.append( descComp );
+            }
+        }
+    }
+
+    private static Vector findElementInTarget(Project project,
+                                              Target t, String name )
+    {
+        Task tasks[]=t.getTasks();
+        Vector elems=new Vector();
+        for( int i=0; i<tasks.length; i++ ) {
+            if( name.equals( tasks[i].getTaskName()) ) {
+                elems.addElement(tasks[i]);
+            }
+        }
+        return elems;
+    }
+
 }