SourceUtil.java

/**
 *   GRANITE DATA SERVICES
 *   Copyright (C) 2006-2015 GRANITE DATA SERVICES S.A.S.
 *
 *   This file is part of the Granite Data Services Platform.
 *
 *   Granite Data Services is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Lesser General Public
 *   License as published by the Free Software Foundation; either
 *   version 2.1 of the License, or (at your option) any later version.
 *
 *   Granite Data Services 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 Lesser
 *   General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 *   USA, or see <http://www.gnu.org/licenses/>.
 */
package org.granite.generator.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;

/**
 * @author Franck WOLFF
 */
public abstract class SourceUtil {

    public static String numberize(String source) {
    	
    	if (source == null)
    		return "(source code not available)";

    	StringBuilder sb = new StringBuilder(source.length());

        try {
            BufferedReader reader = new BufferedReader(new StringReader(source));
            int i = 1;
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(String.format("%4d | ", Integer.valueOf(i++)))
                  .append(line)
                  .append('\n');
            }
        } catch (IOException e) {
            // never...
        }

        return sb.toString();
    }
}