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package Torello.HTML;

import java.io.*;
import java.util.Vector;
import java.net.URL;

import Torello.HTML.Tools.JavaDoc.StaticFunctional;
import Torello.HTML.Tools.JavaDoc.JDHeaderBackgroundImg;
import Torello.HTML.Tools.JavaDoc.Excuse;

/**
 * Java HTML's flagship-parser class for converting HTML web-pages into plain Java {@code Vector's}
 * of {@link HTMLNode}.
 * 
 * <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE>
 * 
 * @see Scrape#getHTML(BufferedReader, int, int)
 * @see Scrape#getHTML(BufferedReader, String, String)
 * @see HTMLPageMWT
 */
@StaticFunctional(Excused="parser", Excuses=Excuse.SINGLETON)
@JDHeaderBackgroundImg
public class HTMLPage
{
    private HTMLPage() { }

    /**
     * A function-pointer / lambda-target that (could) potentially be used to replace this
     * library's current regular-expression based parser with something possibly faster or even
     * more efficient.
     * 
     * <BR /><BR /><EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_PARSER>
     * @see #parser
     */
    @FunctionalInterface
    public static interface Parser
    {
        /**
         * Parse html source-text into a {@code Vector<HTMLNode>}.
         * @param html <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_HTML>
         * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
         * @param rawHTMLFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RAW_HTML>
         * <BR /><BR /><B STYLE='color:red;'>NOTE:</B> If you have decided to implement a parser,
         * and you wish to ingore this parameter (and don't want to output such a file) - <I>it is
         * (hopefully) obvious that you may skip this step!</I>
         * @param matchesFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_MATCHES_F>
         * <BR /><BR /><B>NOTE:</B> <I>As above,</I> you may skip implementing this.
         * @param justTextFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_JUST_TEXT>
         * <BR /><BR /><B>NOTE:</B> <I>As above,</I> you may skip implementing this.
         * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
         * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
         */
        public Vector<HTMLNode> parse(
            CharSequence html, boolean eliminateHTMLTags,
            String rawHTMLFile, String matchesFile, String justTextFile
        ) throws IOException;
    }

    /**
     * If needing to "swap a proprietary parser" comes up, this is possible.
     * It just needs to accept the same parameters as the current parser, and produce a 
     * {@code Vector<HTMLNode>.}  This is not an advised step to take, but if an alternative
     * parser has been tested and happens to be generating different results, it can be easily
     * 'swapped out' for the one used now.
     * @see Parser
     * @see Parser#parse
     */
    public static Parser parser = Torello.HTML.parse.ParserRE::parsePageTokens;

    // ***************************************************************************************************
    // These 6 functions presume that the HTML source is from a URL
    // ***************************************************************************************************
    
    /**
     * Parses and Vectorizes HTML from a {@code java.net.URL} source.
     * @param url <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_URL>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     */
    public static Vector<HTMLNode> getPageTokens
        (URL url, boolean eliminateHTMLTags)
        throws IOException
    { return getPageTokens(url, eliminateHTMLTags, null, null, null, null, null); }
    
    /**
     * Parses and Vectorizes HTML from a {@code java.net.URL} source.
     * @param url <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_URL>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param startTag <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_START_TAG>
     * @param endTag <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_END_TAG>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     * @throws ScrapeException  <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_SCEX2>
     */       
    public static Vector<HTMLNode> getPageTokens
        (URL url, boolean eliminateHTMLTags,
        String startTag, String endTag)
        throws IOException
    { return getPageTokens(url, eliminateHTMLTags, startTag, endTag, null, null, null); }
    
    /**
     * Parses and Vectorizes HTML from a {@code java.net.URL} source.
     * @param url <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_URL>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param startLineNum <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_END_LN>
     * @param endLineNum <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_START_LN>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     * @throws IllegalArgumentException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IAEX>
     * @throws ScrapeException  <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_SCEX1>
     */
    public static Vector<HTMLNode> getPageTokens
        (URL url, boolean eliminateHTMLTags,
        int startLineNum, int endLineNum)
        throws IOException
    { return getPageTokens(url, eliminateHTMLTags, startLineNum, endLineNum, null, null, null); }

    /**
     * Parses and Vectorizes HTML from a {@code java.net.URL} source.
     * @param url <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_URL>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param rawHTMLFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RAW_HTML>
     * @param matchesFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_MATCHES_F>
     * @param justTextFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_JUST_TEXT>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     */
    public static Vector<HTMLNode> getPageTokens
        (URL url, boolean eliminateHTMLTags,
        String rawHTMLFile, String matchesFile, String justTextFile)
        throws IOException
    { return getPageTokens(url, eliminateHTMLTags, null, null, rawHTMLFile, matchesFile, justTextFile); }
    
    /**
     * Parses and Vectorizes HTML from a {@code java.net.URL} source.
     * @param url <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_URL>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param startTag <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_START_TAG>
     * @param endTag <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_END_TAG>
     * @param rawHTMLFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RAW_HTML>
     * @param matchesFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_MATCHES_F>
     * @param justTextFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_JUST_TEXT>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     * @throws ScrapeException  <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_SCEX2>
     */
    public static Vector<HTMLNode> getPageTokens
        (URL url, boolean eliminateHTMLTags,
        String startTag, String endTag,
        String rawHTMLFile, String matchesFile, String justTextFile)
        throws IOException
    {
        return getPageTokens(
            Scrape.openConn(url), eliminateHTMLTags, startTag, endTag,
            rawHTMLFile, matchesFile, justTextFile
        );
    }
    
    /**
     * Parses and Vectorizes HTML from a {@code java.net.URL} source.
     * @param url <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_URL>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param startLineNum <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_END_LN>
     * @param endLineNum <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_START_LN>
     * @param rawHTMLFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RAW_HTML>
     * @param matchesFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_MATCHES_F>
     * @param justTextFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_JUST_TEXT>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     * @throws IllegalArgumentException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IAEX>
     * @throws ScrapeException  <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_SCEX1>
     */
    public static Vector<HTMLNode> getPageTokens
        (URL url, boolean eliminateHTMLTags,
        int startLineNum, int endLineNum,
        String rawHTMLFile, String matchesFile, String justTextFile)
        throws IOException
    {
        return getPageTokens(
            Scrape.openConn(url), eliminateHTMLTags, startLineNum, endLineNum,
            rawHTMLFile, matchesFile, justTextFile
        );
    }

    // ********************************************************************************************
    // These 6 functions presume that the HTML source is from a ready made "CharSequence"
    // (StringBuffer, Builder or String itself)
    // ********************************************************************************************
    
    /**
     * Parses and Vectorizes HTML from a {@code CharSequence} (usually a {@code String}) source.
     * @param html <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_HTML>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * <BR /><BR /><B><SPAN STYLE="color: red;">NOTE:</B></SPAN> This method does not throw any
     * checked-exceptions, there is no Input-Output involved here, it is strictly a computational
     * method that neither invokes the file-system, nor the web.
     */
    public static Vector<HTMLNode> getPageTokens
        (CharSequence html, boolean eliminateHTMLTags) // NO IOException... NO I/O!
    {
        try
            { return parser.parse(html, eliminateHTMLTags, null, null, null); }
        catch (IOException e) 
            { throw new LinkageError("String Parse has thrown IOException.  See getCause() for details.", e); }
    }

    /**
     * Parses and Vectorizes HTML from a {@code CharSequence} (usually a {@code String}) source.
     * @param html <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_HTML>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param startTag <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_START_TAG>
     * @param endTag <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_END_TAG>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * <BR /><BR /><B><SPAN STYLE="color: red;">NOTE:</B></SPAN> This method does not throw any
     * checked-exceptions, there is no Input-Output involved here, it is strictly a computational
     * method that neither invokes the file-system, nor the web.
     * @throws ScrapeException  <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_SCEX2>
     */
    public static Vector<HTMLNode> getPageTokens
        (CharSequence html, boolean eliminateHTMLTags,
        String startTag, String endTag)
    // NO IOException... NO I/O!
    {
        try
            { return getPageTokens(html, eliminateHTMLTags, startTag, endTag, null, null, null); }
        catch (IOException e)
        {
            throw new LinkageError(
                "Something has thrown an IOException.  This should not be possible here.  " +
                "See getCause() for details.",
                e
            );
        }
        // This should never happen, when reading from a 'String' rather than a URL, or
        // BufferedReader, IOException cannot happen.
    }
    
    /**
     * Parses and Vectorizes HTML from a {@code CharSequence} (usually a {@code String}) source.
     * @param html <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_HTML>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param startLineNum <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_END_LN>
     * @param endLineNum <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_START_LN>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * <BR /><BR /><B><SPAN STYLE="color: red;">NOTE:</B></SPAN> This method does not throw any
     * checked-exceptions, there is no Input-Output involved here, it is strictly a computational
     * method that neither invokes the file-system, nor the web.
     * @throws IllegalArgumentException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IAEX>
     * @throws ScrapeException  <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_SCEX1>
     */
    public static Vector<HTMLNode> getPageTokens
        (CharSequence html, boolean eliminateHTMLTags,
        int startLineNum, int endLineNum)
    // NO IOException... NO I/O!
    {
        try
        { 
            return getPageTokens
                (html, eliminateHTMLTags, startLineNum, endLineNum, null, null, null);
        }
        catch (IOException e)
        { 
            throw new LinkageError(
                "String Parse has thrown IOException.  This should not be possible here.  " +
                "See getCause() for details.", e);
        }
        // This should never happen, when reading from a 'String' rather than a URL, or
        // BufferedReader, IOException cannot happen.
    }

    /**
     * Parses and Vectorizes HTML from a {@code CharSequence} (usually a {@code String}) source.
     * @param html <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_HTML>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param rawHTMLFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RAW_HTML>
     * @param matchesFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_MATCHES_F>
     * @param justTextFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_JUST_TEXT>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     */
    public static Vector<HTMLNode> getPageTokens
        (CharSequence html, boolean eliminateHTMLTags,
        String rawHTMLFile, String matchesFile, String justTextFile)
        throws IOException
    { return parser.parse(html, eliminateHTMLTags, rawHTMLFile, matchesFile, justTextFile); }

    /**
     * Parses and Vectorizes HTML from a {@code CharSequence} (usually a {@code String}) source.
     * @param html <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_HTML>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param startTag <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_START_TAG>
     * @param endTag <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_END_TAG>
     * @param rawHTMLFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RAW_HTML>
     * @param matchesFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_MATCHES_F>
     * @param justTextFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_JUST_TEXT>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     * @throws ScrapeException  <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_SCEX2>
     */
    public static Vector<HTMLNode> getPageTokens
        (CharSequence html, boolean eliminateHTMLTags,
        String startTag, String endTag,
        String rawHTMLFile, String matchesFile, String justTextFile) 
        throws IOException
    {
        String  htmlStr = html.toString();

        int     sPos    = htmlStr.indexOf(startTag);
        if (sPos == -1) throw new IllegalArgumentException
            ("Passed String-Parameter 'startTag' [" + startTag + "] was not found in HTML.");

        int     ePos    = htmlStr.indexOf(endTag, sPos);
        if (ePos == -1) throw new IllegalArgumentException
            ("Passed String-Parameter 'endTag' [" + endTag + "] was not found in HTML.");

        ePos += endTag.length();

        return parser.parse(
            htmlStr.substring(sPos, ePos), eliminateHTMLTags,
            rawHTMLFile, matchesFile, justTextFile
        );
    }
    
    /**
     * Parses and Vectorizes HTML from a {@code CharSequence} (usually a {@code String}) source.
     * @param html <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_HTML>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param startLineNum <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_END_LN>
     * @param endLineNum <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_START_LN>
     * @param rawHTMLFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RAW_HTML>
     * @param matchesFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_MATCHES_F>
     * @param justTextFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_JUST_TEXT>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     * @throws IllegalArgumentException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IAEX>
     * @throws ScrapeException  <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_SCEX1>
     */
    public static Vector<HTMLNode> getPageTokens
        (CharSequence html, boolean eliminateHTMLTags,
        int startLineNum, int endLineNum,
        String rawHTMLFile, String matchesFile, String justTextFile) 
        throws IOException
    {
        return getPageTokens(
            new BufferedReader(new StringReader(html.toString())),
            eliminateHTMLTags, startLineNum, endLineNum, rawHTMLFile, matchesFile, justTextFile
        );
    }

    // ***************************************************************************************************
    // The next 6 functions that follow presume that the input is in the form of a Java.util.BufferedReader
    // ***************************************************************************************************

    /**
     * Parses and Vectorizes HTML from a {@code BufferedReader} source.
     * @param br <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_BR>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     */
    public static Vector<HTMLNode> getPageTokens
        (BufferedReader br, boolean eliminateHTMLTags)
        throws IOException
    { return getPageTokens(br, eliminateHTMLTags, null, null, null, null, null); }

    /**
     * Parses and Vectorizes HTML from a {@code BufferedReader} source.
     * @param br <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_BR>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param startTag <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_START_TAG>
     * @param endTag <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_END_TAG>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     * @throws ScrapeException  <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_SCEX2>
     */ 
    public static Vector<HTMLNode> getPageTokens
        (BufferedReader br, boolean eliminateHTMLTags, String startTag, String endTag)
        throws IOException
    { return getPageTokens(br, eliminateHTMLTags, startTag, endTag, null, null, null); }

    /**
     * Parses and Vectorizes HTML from a {@code BufferedReader} source.
     * @param br <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_BR>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param startLineNum <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_END_LN>
     * @param endLineNum <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_START_LN>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     * @throws IllegalArgumentException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IAEX>
     * @throws ScrapeException  <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_SCEX1>
     */
    public static Vector<HTMLNode> getPageTokens
        (BufferedReader br, boolean eliminateHTMLTags,
        int startLineNum, int endLineNum)
        throws IOException
    { return getPageTokens(br, eliminateHTMLTags, startLineNum, endLineNum,	null, null, null); }


    /**
     * Parses and Vectorizes HTML from a {@code BufferedReader} source.
     * @param br <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_BR>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param rawHTMLFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RAW_HTML>
     * @param matchesFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_MATCHES_F>
     * @param justTextFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_JUST_TEXT>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     */
    public static Vector<HTMLNode> getPageTokens(
        BufferedReader br, boolean eliminateHTMLTags,
        String rawHTMLFile, String matchesFile, String justTextFile
    )
        throws IOException
    {
        return getPageTokens
            (br, eliminateHTMLTags, null, null, rawHTMLFile, matchesFile, justTextFile);
    }

    // ********************************************************************************************
    // ********************************************************************************************
    // ********************************************************************************************

    /**
     * Parses and Vectorizes HTML from a {@code BufferedReader} source.
     * @param br <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_BR>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param startTag <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_START_TAG>
     * @param endTag <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_END_TAG>
     * @param rawHTMLFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RAW_HTML>
     * @param matchesFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_MATCHES_F>
     * @param justTextFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_JUST_TEXT>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     * @throws ScrapeException  <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_SCEX2>
     */
    public static Vector<HTMLNode> getPageTokens
        (BufferedReader br, boolean eliminateHTMLTags,
        String startTag, String endTag,
        String rawHTMLFile, String matchesFile, String justTextFile)
        throws IOException
    {
        return parser.parse(
            Scrape.getHTML(br, startTag, endTag), eliminateHTMLTags, rawHTMLFile,
            matchesFile, justTextFile
        );
    }

    /**
     * Parses and Vectorizes HTML from a {@code BufferedReader} source.
     * @param br <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_BR>
     * @param eliminateHTMLTags <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_ELIM_HT>
     * @param startLineNum <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_END_LN>
     * @param endLineNum <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_START_LN>
     * @param rawHTMLFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RAW_HTML>
     * @param matchesFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_MATCHES_F>
     * @param justTextFile <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_JUST_TEXT>
     * @return <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_RETURN>
     * @throws IOException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IOEX>
     * @throws IllegalArgumentException <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_IAEX>
     * @throws ScrapeException  <EMBED CLASS="external-html" DATA-FILE-ID=HTML_PAGE_SCEX1>
     */
    public static Vector<HTMLNode> getPageTokens
        (BufferedReader br, boolean eliminateHTMLTags,
        int startLineNum, int endLineNum,
        String rawHTMLFile, String matchesFile, String justTextFile)
        throws IOException
    {
        return parser.parse(
            Scrape.getHTML(br, startLineNum, endLineNum), eliminateHTMLTags,
            rawHTMLFile, matchesFile, justTextFile
        );
    }
}