/*
 * [ToHex.java]
 *
 * Summary: Converts String to Lower case.
 *
 * 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;

import com.mindprod.common18.ST;

/**
 * Converts String to Lower case.
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.0 2002-06-19
 * @since 2002-06-19
 */
final class ToHex 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;
            }
        final int length = raw.length();
        StringBuilder sb = new StringBuilder( length * 7 );
        // Note off does not count characters;
        // it tracks the offset in the String.
        // Note no off++ !
        for ( int off = 0; off < length; )
            {
            final int codePoint = raw.codePointAt( off );
            final int width = Character.charCount( codePoint );
            sb.append( Character.toChars( codePoint ) );
            sb.append( "-" );
            final String hex;
            if ( codePoint <= 0xff )
                {
                hex = ST.toLZHexString( codePoint, 2 );
                }
            else if ( codePoint <= 0xffff )
                {
                hex = ST.toLZHexString( codePoint, 4 );
                }
            else
                {
                hex = ST.toLZHexString( codePoint, 5 );
                }
            sb.append( hex );
            sb.append( " " );
            // hop to next character, normally 1 slot further along.
            // This incrementer code can't go in the for since codepoint is undefined there.
            off += width;
            }
        return sb.toString();
        }
    }