/*
 * [StripNewlines.java]
 *
 * Summary: Flows text by stripping newlines ( actually replacing them with spaces ).
 *
 * Copyright: (c) 2002-2017 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 2002-06-19
 */
package com.mindprod.quoter;

/**
 * Flows text by stripping newlines ( actually replacing them with spaces ).
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.0 2011-11-15 initial version
 * @since 2011-11-15
 */
final class StripNewlines extends TextProcessor
    {
    /**
     * Chops off leading and trailing spaces from each line.
     *
     * @param raw text to be chopped
     *
     * @return String representing the cooked output
     */
    String process( String raw )
        {
        if ( raw == null )
            {
            return null;
            }
        // we don't actually remove newlines, we convert them to blanks
        final StringBuilder sb = new StringBuilder( raw.length() );
        boolean pendingSpace = false;
        for ( int i = 0; i < raw.length(); i++ )
            {
            final char c = raw.charAt( i );
            if ( c == '\r' || c == '\n' )
                {
                pendingSpace = true;
                }
            else
                {
                if ( pendingSpace )
                    {
                    sb.append( ' ' );
                    pendingSpace = false;
                    }
                sb.append( c );
                }
            }
        return sb.toString();
        }
    }