/*
 * [Widen.java]
 *
 * Summary: Makes table contain half as many rows and twice as many columns my moving bottom half of table to top right.
 *
 * Copyright: (c) 1998-2017 Roedy Green, Canadian Mind Products, http://mindprod.com
 *
 * Licence: This software may be copied and used freely for any purpose but military.
 *          http://mindprod.com/contact/nonmil.html
 *
 * Requires: JDK 1.8+
 *
 * Created with: JetBrains IntelliJ IDEA IDE http://www.jetbrains.com/idea/
 *
 * Version History:
 *  1.0 1998-01-01 initial version.
 */
package com.mindprod.reorg;

import java.io.IOException;

import static java.lang.System.*;

/**
 * Makes table contain half as many rows and twice as many columns my moving bottom half of table to top right.
 * <p/>
 * Widen.java
 * Widen an HTML table,
 * command line is empty
 * Makes table contain half as many rows and twice as many columns my moving bottom half of table to top right.
 * Must manually strip stuff ahead and after table.
 * Must manually strip <TABLE> </TABLE>
 * Must manually strip <TH> </TH>
 * no fancy <tr ALIGN> etc. Just <tr> <td> in upper or lower case.
 * It can't handle any grammatical errors in your HTML.
 * Input from E:\temp\in.html
 * Output to E:\temp\out.html all tags in lower case.
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.0 1998-01-01 initial version.
 * @since 1998
 */
public final class Widen extends Common
    {
    private static final int FIRST_COPYRIGHT_YEAR = 1998;

    /**
     * non-displaying copyright.
     */
    @SuppressWarnings( { "UnusedDeclaration" } )
    private static final String EMBEDDED_COPYRIGHT =
            "Copyright: (c) 1998-2017 Roedy Green, Canadian Mind Products, http://mindprod.com";

    /**
     * main
     *
     * @param args which cols you want in output table in order, 0-based
     *
     * @throws java.io.IOException if any problem reading or writing the html
     */
    @SuppressWarnings( { "UnnecessaryLocalVariable" } )
    public static void main( String[] args ) throws IOException
        {
        // get entire table into a string.
        final String[][] matrix = getMatrix( IN_FILENAME );
        final int rows = rows( matrix );
        final int cols = cols( matrix );
        displayRowAndColCounts( "input", rows, cols );
        trimMatrix( matrix );
        final int nrows = ( rows + 1 ) / 2;
        final int ncols = cols * 2;
        displayRowAndColCounts( "widened output", nrows, ncols );
        // create new matrix with desired new columns.
        String[][] grid = new String[ nrows ][ ncols ];
        // copy top left to top left.
        for ( int row = 0; row < nrows; row++ )
            {
            for ( int col = 0; col < cols; col++ )
                {
                out.println( row + " " + col );
                grid[ row ][ col ] = ( row >= rows || col >= cols ) ? "" : matrix[ row ][ col ];
                } // end for col
            } // end for for row
        out.println( "..." );
        // copy bottom right to top right
        for ( int row = nrows; row < rows; row++ )
            {
            for ( int col = 0; col < cols; col++ )
                {
                out.println( row + " " + col );
                grid[ row - nrows ][ col + cols ] = ( row >= rows || col >= cols ) ? "" : matrix[ row ][ col ];
                } // end for col
            } // end for row
        writeMatrix( grid, OUT_FILENAME );
        } // end main
    }