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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.tools.ant.types;
import java.util.ArrayList;
import java.util.List;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.ProjectHelper;
import org.apache.tools.ant.Target;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.UnknownElement;
import org.apache.tools.ant.helper.ProjectHelper2;
import org.apache.tools.ant.helper.ProjectHelperImpl;
/**
* Description is used to provide a project-wide description element
* (that is, a description that applies to a buildfile as a whole).
* If present, the <description> element is printed out before the
* target descriptions.
*
* Description has no attributes, only text. There can only be one
* project description per project. A second description element will
* overwrite the first.
*
*
* @ant.datatype ignore="true"
*/
public class Description extends DataType {
/**
* Adds descriptive text to the project.
*
* @param text the descriptive text
*/
public void addText(String text) {
ProjectHelper ph = getProject().getReference(ProjectHelper.PROJECTHELPER_REFERENCE);
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);
} else {
getProject().setDescription(currentDescription + text);
}
}
/**
* Return the descriptions from all the targets of
* a project.
*
* @param project the project to get the descriptions for.
* @return a string containing the concatenated descriptions of
* the targets.
*/
public static String getDescription(Project project) {
List<Target> targets = project.getReference(ProjectHelper2.REFID_TARGETS);
if (targets == null) {
return null;
}
StringBuilder description = new StringBuilder();
for (Target t : targets) {
concatDescriptions(project, t, description);
}
return description.toString();
}
private static void concatDescriptions(Project project, Target t,
StringBuilder description) {
if (t == null) {
return;
}
for (Task task : findElementInTarget(project, t, "description")) {
if (!(task instanceof UnknownElement)) {
continue;
}
UnknownElement ue = ((UnknownElement) task);
String descComp = ue.getWrapper().getText().toString();
if (descComp != null) {
description.append(project.replaceProperties(descComp));
}
}
}
private static List<Task> findElementInTarget(Project project,
Target t, String name) {
final List<Task> elems = new ArrayList<Task>();
for (Task task : t.getTasks()) {
if (name.equals(task.getTaskName())) {
elems.add(task);
}
}
return elems;
}
}
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