/*
 * [Transpose.java]
 *
 * Summary: transpose a table's rows and columns.
 *
 * Copyright: (c) 2000-2017 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
 */
package com.mindprod.reorg;

import java.io.IOException;

/**
 * transpose a table's rows and columns.
 * <p/>
 * Transpose.java
 * reshape a HTML table by exchanging rows and columns
 * No command command line
 * Must manually strip stuff ahead and after table.
 * Must manually strip <TABLE> </TABLE>
 * Must manually strip <TH> </TH>
 * no fancy <tr ALIGN COLSPAN> 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
 * @since 1998-01-01
 */
public final class Transpose 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 not used. Input always temp.in
     *
     * @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 = cols;
        final int ncols = rows;
        displayRowAndColCounts( "output", nrows, ncols );
        // create new matrix transposing rows & columns.
        String[][] grid = new String[ nrows ][ ncols ];
        // copy over, transposing.
        for ( int col = 0; col < ncols; col++ )
            {
            for ( int row = 0; row < nrows; row++ )
                {
                grid[ row ][ col ] = matrix[ col ][ row ];
                } // end for
            } // end for
        writeMatrix( grid, OUT_FILENAME );
        } // end main
    } // end Transpose