/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

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

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 */

/**/

public class LineGenerator {

    IntGenerator ig;

    StringGenerator sg;

    int limit;

    public LineGenerator(IntGenerator ig, StringGenerator sg, int limit) {

        this.ig = ig;

        this.sg = sg;

        this.limit = limit;

    }

    public LineGenerator(IntGenerator ig) {

        this.ig = ig;

        this.sg = new StringGenerator(ig);

        this.limit = -1;

    }

    private char prevTerminator = 0;

    private int count = 0;

    public String lineTerminator;

    public String next() {

        if ((count >= limit) && (limit >= 0))

            return null;

        String l = sg.next();

        /* Avoid "\r\n" sequences

           in which the '\n' terminates a blank line */

        int len = l.length();

        int t;

        do

            t = ig.next(2);

        while ((prevTerminator == '\r') && (len == 0) && (t == 0));

        String ts;

        switch (t) {

        case 0:

            ts = "\n";

            prevTerminator = '\n';

            break;

        case 1:

            ts = "\r";

            prevTerminator = '\r';

            break;

        case 2:

        default:

            ts = "\r\n";

            prevTerminator = '\n';

            break;

        }

        count++;

        lineTerminator = ts;

        return l;

    }

}