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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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*/

package com.google.refine.model.changes;

import java.io.IOException;
import java.io.Writer;
import java.util.Properties;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import com.google.refine.model.Cell;
import com.google.refine.util.Pool;

public class CellAtRowCellIndex {

        final public int row;
        final public int cellIndex;
        final public Cell cell;
        final static private Pattern semicolonPattern = Pattern.compile(";");

        public CellAtRowCellIndex(int row, int cellIndex, Cell cell) {
                this.row = row;
                this.cell = cell;
                this.cellIndex = cellIndex;
        }

        public void save(Writer writer, Properties options) throws IOException {
                writer.write(Integer.toString(row));
                writer.write(';');
                writer.write(Integer.toString(cellIndex));
                writer.write(';');
                if (cell != null) {
                        cell.save(writer, options);
                }
        }

        static public CellAtRowCellIndex load(String s, Pool pool) throws Exception {

                Matcher m = semicolonPattern.matcher(s);

                m.find();
                int semicolon = m.start();
                m.find();
                int nextSemicolon = m.start();

                int row = Integer.parseInt(s.substring(0, semicolon));
                int cellIndex = Integer.parseInt(s.substring(semicolon + 1, nextSemicolon));
                Cell cell = nextSemicolon < s.length() - 1 ? Cell.loadStreaming(s.substring(nextSemicolon + 1), pool)
                                : null;

                return new CellAtRowCellIndex(row, cellIndex, cell);
        }
}
