/*

 *   SONEWS News Server

 *   see AUTHORS for the list of contributors

 *

 *   This program is free software: you can redistribute it and/or modify

 *   it under the terms of the GNU General Public License as published by

 *   the Free Software Foundation, either version 3 of the License, or

 *   (at your option) any later version.

 *

 *   This program is distributed in the hope that it will be useful,

 *   but WITHOUT ANY WARRANTY; without even the implied warranty of

 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *   GNU General Public License for more details.

 *

 *   You should have received a copy of the GNU General Public License

 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

package org.sonews.util;

import java.util.HashMap;

import java.util.Map;

/**

 * Class that allows simple String template handling.

 * @author Christian Lins

 * @since sonews/0.5.0

 */

public class StringTemplate

{

	private String str = null;

	private String templateDelimiter = "%";

	private Map<String, String> templateValues = new HashMap<String, String>();

	public StringTemplate(String str, final String templateDelimiter)

	{

		if (str == null || templateDelimiter == null) {

			throw new IllegalArgumentException("null arguments not allowed");

		}

		this.str = str;

		this.templateDelimiter = templateDelimiter;

	}

	public StringTemplate(String str)

	{

		this(str, "%");

	}

	public StringTemplate set(String template, String value)

	{

		if (template == null || value == null) {

			throw new IllegalArgumentException("null arguments not allowed");

		}

		this.templateValues.put(template, value);

		return this;

	}

	public StringTemplate set(String template, long value)

	{

		return set(template, Long.toString(value));

	}

	public StringTemplate set(String template, double value)

	{

		return set(template, Double.toString(value));

	}

	public StringTemplate set(String template, Object obj)

	{

		if (template == null || obj == null) {

			throw new IllegalArgumentException("null arguments not allowed");

		}

		return set(template, obj.toString());

	}

	@Override

	public String toString()

	{

		String ret = str;

		for (String key : this.templateValues.keySet()) {

			String value = this.templateValues.get(key);

			ret = ret.replace(templateDelimiter + key, value);

		}

		return ret;

	}

}