entities.java

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package org.apache.commons.lang;

import java.util.HashMap;
import java.util.Map;
import java.util.TreeMap;

/**
 * <p>Provides HTML and XML entity utilities.</p>
 *
 * @see <a href="http://hotwired.lycos.com/webmonkey/reference/special_characters/">ISO Entities</a>
 * @see </br><a href="http://www.w3.org/TR/REC-html32#latin1">HTML 3.2 Character Entities for ISO Latin-1</a>
 * @see </br><a href="http://www.w3.org/TR/REC-html40/sgml/entities.html">HTML 4.0 Character entity references</a>
 * @see </br><a href="http://www.w3.org/TR/html401/charset.html#h-5.3">HTML 4.01 Character References</a>
 * @see </br><a href="http://www.w3.org/TR/html401/charset.html#code-position">HTML 4.01 Code positions</a>
 *
 * @author <a href="mailto:[e-mail]">Alexander Day Chaffee</a>
 * @author <a href="mailto:[e-mail]">Gary Gregory</a>
 * @since 2.0
 * @version $Id: Entities.java,v 1.13 2003/08/18 02:22:22 bayard Exp $
 */
class Entities {

    private static final String[][] BASIC_ARRAY = {
        {"quot", "34"}, // " - double-quote
        {"amp", "38"}, // & - ampersand
        {"lt", "60"}, // < - less-than
        {"gt", "62"}, // > - greater-than
    };

    private static final String[][] APOS_ARRAY = {
        {"apos", "39"}, // XML apostrophe
    };

    // package scoped for testing
    static final String[][] ISO8859_1_ARRAY = {
        {"nbsp", "160"}, // non-breaking space
        {"iexcl", "161"}, //inverted exclamation mark
        {"cent", "162"}, //cent sign
        {"pound", "163"}, //pound sign
        {"curren", "164"}, //currency sign
        {"yen", "165"}, //yen sign = yuan sign
        {"brvbar", "166"}, //broken bar = broken vertical bar
        {"sect", "167"}, //section sign
        {"uml", "168"}, //diaeresis = spacing diaeresis
        {"copy", "169"}, //