JDK14/Java14源码在线阅读

/*
 * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package javax.swing.text.html.parser;

import java.util.Hashtable;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.CharArrayReader;
import java.net.URL;

/**
 * An entity is described in a DTD using the ENTITY construct.
 * It defines the type and value of the entity.
 *
 * @see DTD
 * @author Arthur van Hoff
 */
public final
class Entity implements DTDConstants {
    /**
     * The name of the entity.
     */
    public String name;

    /**
     * The type of the entity.
     */
    public int type;

    /**
     * The char array of data.
     */
    public char[] data;

    /**
     * Creates an entity.
     * @param name the name of the entity
     * @param type the type of the entity
     * @param data the char array of data
     */
    public Entity(String name, int type, char[] data) {
        this.name = name;
        this.type = type;
        this.data = data;
    }

    /**
     * Gets the name of the entity.
     * @return the name of the entity, as a <code>String</code>
     */
    public String getName() {
        return name;
    }

    /**
     * Gets the type of the entity.
     * @return the type of the entity
     */
    public int getType() {
        return type & 0xFFFF;
    }

    /**
     * Returns <code>true</code> if it is a parameter entity.
     * @return <code>true</code> if it is a parameter entity
     */
    public boolean isParameter() {
        return (type & PARAMETER) != 0;
    }

    /**
     * Returns <code>true</code> if it is a general entity.
     * @return <code>true</code> if it is a general entity
     */
    public boolean isGeneral() {
        return (type & GENERAL) != 0;
    }

    /**
     * Returns the <code>data</code>.
     * @return the <code>data</code>
     */
    public char[] getData() {
        return data;
    }

    /**
     * Returns the data as a <code>String</code>.
     * @return the data as a <code>String</code>
     */
    public String getString() {
        return new String(data, 0, data.length);
    }


    static Hashtable<String, Integer> entityTypes = new Hashtable<String, Integer>();

    static {
        entityTypes.put("PUBLIC", Integer.valueOf(PUBLIC));
        entityTypes.put("CDATA", Integer.valueOf(CDATA));
        entityTypes.put("SDATA", Integer.valueOf(SDATA));
        entityTypes.put("PI", Integer.valueOf(PI));
        entityTypes.put("STARTTAG", Integer.valueOf(STARTTAG));
        entityTypes.put("ENDTAG", Integer.valueOf(ENDTAG));
        entityTypes.put("MS", Integer.valueOf(MS));
        entityTypes.put("MD", Integer.valueOf(MD));
        entityTypes.put("SYSTEM", Integer.valueOf(SYSTEM));
    }

    /**
     * Converts <code>nm</code> string to the corresponding
     * entity type.  If the string does not have a corresponding

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