tohtmlstream.java

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/*
 * Copyright 2001-2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * $Id: ToHTMLStream.java,v 1.2.4.1 2005/09/15 08:15:26 suresh_emailid Exp $
 */
package com.sun.org.apache.xml.internal.serializer;

import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.Properties;

import javax.xml.transform.Result;

import com.sun.org.apache.xml.internal.serializer.utils.MsgKey;
import com.sun.org.apache.xml.internal.serializer.utils.Utils;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;

/**
 * This serializer takes a series of SAX or
 * SAX-like events and writes its output
 * to the given stream.
 * 
 * This class is not a public API, it is public
 * because it is used from another package.
 * 
 * @xsl.usage internal
 */
public final class ToHTMLStream extends ToStream 
{

    /** This flag is set while receiving events from the DTD */
    protected boolean m_inDTD = false;

    /** True if the current element is a block element.  (seems like 
     *  this needs to be a stack. -sb). */
    private boolean m_inBlockElem = false;

    /**
     * Map that tells which XML characters should have special treatment, and it
     *  provides character to entity name lookup.
     */
    private static final CharInfo m_htmlcharInfo =
//        new CharInfo(CharInfo.HTML_ENTITIES_RESOURCE);
        CharInfo.getCharInfo(CharInfo.HTML_ENTITIES_RESOURCE, Method.HTML);

    /** A digital search trie for fast, case insensitive lookup of ElemDesc objects. */
    static final Trie m_elementFlags = new Trie();

    static {
        initTagReference(m_elementFlags);
    }
    static void initTagReference(Trie m_elementFlags) {

        // HTML 4.0 loose DTD
        m_elementFlags.put("BASEFONT", new ElemDesc(0 | ElemDesc.EMPTY));
        m_elementFlags.put(
            "FRAME",
            new ElemDesc(0 | ElemDesc.EMPTY | ElemDesc.BLOCK));
        m_elementFlags.put("FRAMESET", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put("NOFRAMES", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put(
            "ISINDEX",
            new ElemDesc(0 | ElemDesc.EMPTY | ElemDesc.BLOCK));
        m_elementFlags.put(
            "APPLET",
            new ElemDesc(0 | ElemDesc.WHITESPACESENSITIVE));
        m_elementFlags.put("CENTER", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put("DIR", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put("MENU", new ElemDesc(0 | ElemDesc.BLOCK));

        // HTML 4.0 strict DTD
        m_elementFlags.put("TT", new ElemDesc(0 | ElemDesc.FONTSTYLE));
        m_elementFlags.put("I", new ElemDesc(0 | ElemDesc.FONTSTYLE));
        m_elementFlags.put("B", new ElemDesc(0 | ElemDesc.FONTSTYLE));
        m_elementFlags.put("BIG", new ElemDesc(0 | ElemDesc.FONTSTYLE));
        m_elementFlags.put("SMALL", new ElemDesc(0 | ElemDesc.FONTSTYLE));
        m_elementFlags.put("EM", new ElemDesc(0 | ElemDesc.PHRASE));
        m_elementFlags.put("STRONG", new ElemDesc(0 | ElemDesc.PHRASE));
        m_elementFlags.put("DFN", new ElemDesc(0 | ElemDesc.PHRASE));
        m_elementFlags.put("CODE", new ElemDesc(0 | ElemDesc.PHRASE));
        m_elementFlags.put("SAMP", new ElemDesc(0 | ElemDesc.PHRASE));
        m_elementFlags.put("KBD", new ElemDesc(0 | ElemDesc.PHRASE));
        m_elementFlags.put("VAR", new ElemDesc(0 | ElemDesc.PHRASE));
        m_elementFlags.put("CITE", new ElemDesc(0 | ElemDesc.PHRASE));
        m_elementFlags.put("ABBR", new ElemDesc(0 | ElemDesc.PHRASE));
        m_elementFlags.put("ACRONYM", new ElemDesc(0 | ElemDesc.PHRASE));
        m_elementFlags.put(
            "SUP",
            new ElemDesc(0 | ElemDesc.SPECIAL | ElemDesc.ASPECIAL));
        m_elementFlags.put(
            "SUB",
            new ElemDesc(0 | ElemDesc.SPECIAL | ElemDesc.ASPECIAL));
        m_elementFlags.put(
            "SPAN",
            new ElemDesc(0 | ElemDesc.SPECIAL | ElemDesc.ASPECIAL));
        m_elementFlags.put(
            "BDO",
            new ElemDesc(0 | ElemDesc.SPECIAL | ElemDesc.ASPECIAL));
        m_elementFlags.put(
            "BR",
            new ElemDesc(
                0
                    | ElemDesc.SPECIAL
                    | ElemDesc.ASPECIAL
                    | ElemDesc.EMPTY
                    | ElemDesc.BLOCK));
        m_elementFlags.put("BODY", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put(
            "ADDRESS",
            new ElemDesc(
                0
                    | ElemDesc.BLOCK
                    | ElemDesc.BLOCKFORM
                    | ElemDesc.BLOCKFORMFIELDSET));
        m_elementFlags.put(
            "DIV",
            new ElemDesc(
                0
                    | ElemDesc.BLOCK
                    | ElemDesc.BLOCKFORM
                    | ElemDesc.BLOCKFORMFIELDSET));
        m_elementFlags.put("A", new ElemDesc(0 | ElemDesc.SPECIAL));
        m_elementFlags.put(
            "MAP",
            new ElemDesc(
                0 | ElemDesc.SPECIAL | ElemDesc.ASPECIAL | ElemDesc.BLOCK));
        m_elementFlags.put(
            "AREA",
            new ElemDesc(0 | ElemDesc.EMPTY | ElemDesc.BLOCK));
        m_elementFlags.put(
            "LINK",
            new ElemDesc(
                0 | ElemDesc.HEADMISC | ElemDesc.EMPTY | ElemDesc.BLOCK));
        m_elementFlags.put(
            "IMG",
            new ElemDesc(
                0
                    | ElemDesc.SPECIAL
                    | ElemDesc.ASPECIAL
                    | ElemDesc.EMPTY
                    | ElemDesc.WHITESPACESENSITIVE));
        m_elementFlags.put(
            "OBJECT",
            new ElemDesc(
                0
                    | ElemDesc.SPECIAL
                    | ElemDesc.ASPECIAL
                    | ElemDesc.HEADMISC
                    | ElemDesc.WHITESPACESENSITIVE));
        m_elementFlags.put("PARAM", new ElemDesc(0 | ElemDesc.EMPTY));
        m_elementFlags.put(
            "HR",
            new ElemDesc(
                0
                    | ElemDesc.BLOCK
                    | ElemDesc.BLOCKFORM
                    | ElemDesc.BLOCKFORMFIELDSET
                    | ElemDesc.EMPTY));
        m_elementFlags.put(
            "P",
            new ElemDesc(
                0
                    | ElemDesc.BLOCK
                    | ElemDesc.BLOCKFORM
                    | ElemDesc.BLOCKFORMFIELDSET));
        m_elementFlags.put(
            "H1",
            new ElemDesc(0 | ElemDesc.HEAD | ElemDesc.BLOCK));
        m_elementFlags.put(
            "H2",
            new ElemDesc(0 | ElemDesc.HEAD | ElemDesc.BLOCK));
        m_elementFlags.put(
            "H3",
            new ElemDesc(0 | ElemDesc.HEAD | ElemDesc.BLOCK));
        m_elementFlags.put(
            "H4",
            new ElemDesc(0 | ElemDesc.HEAD | ElemDesc.BLOCK));
        m_elementFlags.put(
            "H5",
            new ElemDesc(0 | ElemDesc.HEAD | ElemDesc.BLOCK));
        m_elementFlags.put(
            "H6",
            new ElemDesc(0 | ElemDesc.HEAD | ElemDesc.BLOCK));
        m_elementFlags.put(
            "PRE",
            new ElemDesc(0 | ElemDesc.PREFORMATTED | ElemDesc.BLOCK));
        m_elementFlags.put(
            "Q",
            new ElemDesc(0 | ElemDesc.SPECIAL | ElemDesc.ASPECIAL));
        m_elementFlags.put(
            "BLOCKQUOTE",
            new ElemDesc(
                0
                    | ElemDesc.BLOCK
                    | ElemDesc.BLOCKFORM
                    | ElemDesc.BLOCKFORMFIELDSET));
        m_elementFlags.put("INS", new ElemDesc(0));
        m_elementFlags.put("DEL", new ElemDesc(0));
        m_elementFlags.put(
            "DL",
            new ElemDesc(
                0
                    | ElemDesc.BLOCK
                    | ElemDesc.BLOCKFORM
                    | ElemDesc.BLOCKFORMFIELDSET));
        m_elementFlags.put("DT", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put("DD", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put(
            "OL",
            new ElemDesc(0 | ElemDesc.LIST | ElemDesc.BLOCK));
        m_elementFlags.put(
            "UL",
            new ElemDesc(0 | ElemDesc.LIST | ElemDesc.BLOCK));
        m_elementFlags.put("LI", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put("FORM", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put("LABEL", new ElemDesc(0 | ElemDesc.FORMCTRL));
        m_elementFlags.put(
            "INPUT",
            new ElemDesc(
                0 | ElemDesc.FORMCTRL | ElemDesc.INLINELABEL | ElemDesc.EMPTY));
        m_elementFlags.put(
            "SELECT",
            new ElemDesc(0 | ElemDesc.FORMCTRL | ElemDesc.INLINELABEL));
        m_elementFlags.put("OPTGROUP", new ElemDesc(0));
        m_elementFlags.put("OPTION", new ElemDesc(0));
        m_elementFlags.put(
            "TEXTAREA",
            new ElemDesc(0 | ElemDesc.FORMCTRL | ElemDesc.INLINELABEL));
        m_elementFlags.put(
            "FIELDSET",
            new ElemDesc(0 | ElemDesc.BLOCK | ElemDesc.BLOCKFORM));
        m_elementFlags.put("LEGEND", new ElemDesc(0));
        m_elementFlags.put(
            "BUTTON",
            new ElemDesc(0 | ElemDesc.FORMCTRL | ElemDesc.INLINELABEL));
        m_elementFlags.put(
            "TABLE",
            new ElemDesc(
                0
                    | ElemDesc.BLOCK
                    | ElemDesc.BLOCKFORM
                    | ElemDesc.BLOCKFORMFIELDSET));
        m_elementFlags.put("CAPTION", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put("THEAD", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put("TFOOT", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put("TBODY", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put("COLGROUP", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put(
            "COL",
            new ElemDesc(0 | ElemDesc.EMPTY | ElemDesc.BLOCK));
        m_elementFlags.put("TR", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put("TH", new ElemDesc(0));
        m_elementFlags.put("TD", new ElemDesc(0));
        m_elementFlags.put(
            "HEAD",
            new ElemDesc(0 | ElemDesc.BLOCK | ElemDesc.HEADELEM));
        m_elementFlags.put("TITLE", new ElemDesc(0 | ElemDesc.BLOCK));
        m_elementFlags.put(
            "BASE",
            new ElemDesc(0 | ElemDesc.EMPTY | ElemDesc.BLOCK));
        m_elementFlags.put(
            "META",
            new ElemDesc(
                0 | ElemDesc.HEADMISC | ElemDesc.EMPTY | ElemDesc.BLOCK));
        m_elementFlags.put(
            "STYLE",
            new ElemDesc(
                0 | ElemDesc.HEADMISC | ElemDesc.RAW | ElemDesc.BLOCK));
        m_elementFlags.put(
            "SCRIPT",
            new ElemDesc(
                0
                    | ElemDesc.SPECIAL
                    | ElemDesc.ASPECIAL
                    | ElemDesc.HEADMISC
                    | ElemDesc.RAW));
        m_elementFlags.put(
            "NOSCRIPT",
            new ElemDesc(
                0
                    | ElemDesc.BLOCK
                    | ElemDesc.BLOCKFORM
                    | ElemDesc.BLOCKFORMFIELDSET));
        m_elementFlags.put("HTML", new ElemDesc(0 | ElemDesc.BLOCK));

        // From "John Ky" <[e-mail]
        // Transitional Document Type Definition ()
        // file:///C:/Documents%20and%20Settings/sboag.BOAG600E/My%20Documents/html/sgml/loosedtd.html#basefont
        m_elementFlags.put("FONT", new ElemDesc(0 | ElemDesc.FONTSTYLE));

        // file:///C:/Documents%20and%20Settings/sboag.BOAG600E/My%20Documents/html/present/graphics.html#edef-STRIKE
        m_elementFlags.put("S", new ElemDesc(0 | ElemDesc.FONTSTYLE));
        m_elementFlags.put("STRIKE", new ElemDesc(0 | ElemDesc.FONTSTYLE));

        // file:///C:/Documents%20and%20Settings/sboag.BOAG600E/My%20Documents/html/present/graphics.html#edef-U
        m_elementFlags.put("U", new ElemDesc(0 | ElemDesc.FONTSTYLE));

        // From "John Ky" <[e-mail]
        m_elementFlags.put("NOBR", new ElemDesc(0 | ElemDesc.FONTSTYLE));

        // HTML 4.0, section 16.5
        m_elementFlags.put(
            "IFRAME",
            new ElemDesc(
                0
                    | ElemDesc.BLOCK
                    | ElemDesc.BLOCKFORM
                    | ElemDesc.BLOCKFORMFIELDSET));
                    
        // Netscape 4 extension
        m_elementFlags.put(
            "LAYER",
            new ElemDesc(
                0
                    | ElemDesc.BLOCK
                    | ElemDesc.BLOCKFORM
                    | ElemDesc.BLOCKFORMFIELDSET));
        // Netscape 4 extension                    
        m_elementFlags.put(
            "ILAYER",
            new ElemDesc(
                0
                    | ElemDesc.BLOCK
                    | ElemDesc.BLOCKFORM
                    | ElemDesc.BLOCKFORMFIELDSET));


        // NOW FOR ATTRIBUTE INFORMATION . . .
        ElemDesc elemDesc;


        // ----------------------------------------------
        elemDesc = (ElemDesc) m_elementFlags.get("A");
        elemDesc.setAttr("HREF", ElemDesc.ATTRURL);
        elemDesc.setAttr("NAME", ElemDesc.ATTRURL);
        
        // ----------------------------------------------
        elemDesc = (ElemDesc) m_elementFlags.get("AREA");
        elemDesc.setAttr("HREF", ElemDesc.ATTRURL);
        elemDesc.setAttr("NOHREF", ElemDesc.ATTREMPTY);

        // ----------------------------------------------
        elemDesc = (ElemDesc) m_elementFlags.get("BASE");
        elemDesc.setAttr("HREF", ElemDesc.ATTRURL);

        // ----------------------------------------------
        elemDesc = (ElemDesc) m_elementFlags.get("BUTTON");
        elemDesc.setAttr("DISABLED", ElemDesc.ATTREMPTY);

        // ----------------------------------------------