/*
 *
 * Copyright (c) 2006 The Apache Software Foundation
 *
 * 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 org.apache.qpid.tasks;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.TaskContainer;

import java.util.ArrayList;
import java.util.List;

/**
 * Foreach -- an ant task that allows iteration.
 **/

public class Foreach extends BaseTask implements TaskContainer {

    private String property;
    private String list;
    private String delim = "\\s+";
    private String stop;
    private List<Task> tasks = new ArrayList<Task>();

    public void setProperty(String p) {
        property = p;
    }

    public void setList(String l) {
        list = l;
    }

    public void setDelim(String d) {
        delim = d;
    }

    public void setStop(String s) {
        stop = s;
    }

    public void addTask(Task t) {
        tasks.add(t);
    }

    public void execute() {
        validate("property", property).required().nonempty();
        validate("list", property).required();

        if (list.length() == 0) {
            return;
        }

        String[] values = list.split(delim);
        for (int i = 0; i < values.length; i++) {
            String value = values[i];
            if (stop != null && stop.length() > 0 &&
                value.equals(stop)) {
                break;
            }
            getProject().setProperty(property, value);
            for (Task t : tasks) {
                t.perform();
            }
        }
    }

}
