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package Torello.HTML;

import java.util.*;
import java.util.regex.*;
import java.util.stream.*;
import java.io.Serializable;
import java.lang.reflect.*;

import Torello.HTML.NodeSearch.*;
import Torello.Java.*;

/**
 * Computes miscellaneous statistics for a web-page, or sub-page.
 * 
 * <BR /><BR /><EMBED CLASS='external-html' DATA-FILE-ID=PAGE_STATS>
 *
 * <STYLE TYPE="text/css">
 * .PAGESTATS
 * { color: red; font-weight: bold; font-family: "Courier New", Courier, monospace; }
 * </STYLE>
 */
public class PageStats implements Serializable, Comparable<PageStats>, Cloneable
{
    /** <EMBED CLASS='external-html' DATA-FILE-ID=SVUID> */
    public static final long serialVersionUID = 1;

    /**
     * If a Vectorized HTML page were converted to a String, this would be the length of that
     * string.
     * 
     * @see Util#strLength(Vector)
     * @see Util#strLength(Vector, int, int)
     */
    public final int strLength;

    /**
     * The string hash-code of the vectorized-HTML webpage, as if it were being represented as one
     * single {@code java.lang.String.}
     * 
     * @see Util#hashCode(Vector)
     * @see Util#hashCode(Vector, int, int)
     */
    public final int hash;





    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'class'} attribute, when
     * queried using {@code TagNode.AV("class")}
     */
    public final short hasAVclass;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'style'} attribute, when
     * queried using {@code TagNode.AV("style")}
     */
    public final short hasAVstyle;

    /**
     * The number of HTML {@code TagNode} elements that have an {@code 'id'} attribute, when
     * queried using {@code TagNode.AV("id")}
     */
    public final short hasAVid;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'title'} attribute, when
     * queried using {@code TagNode.AV("title")}
     */
    public final short hasAVtitle;

    /**
     * The number of HTML {@code TagNode} elements that have an {@code 'href'} attribute, when
     * queried using {@code TagNode.AV("href")}
     */
    public final short hasAVhref;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'hreflang'} attribute, when
     * queried using {@code TagNode.AV("hreflang")}
     */
    public final short hasAVhreflang;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'src'} attribute, when
     * queried using {@code TagNode.AV("src")}
     */
    public final short hasAVsrc;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'srcset'} attribute, when
     * queried using {@code TagNode.AV("srcset")}
     */
    public final short hasAVsrcset;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'srclang'} attribute, when
     * queried using {@code TagNode.AV("srclang")}
     */
    public final short hasAVsrclang;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'srcdoc'} attribute, when
     * queried using {@code TagNode.AV("srcdoc")}
     */
    public final short hasAVsrcdoc;

    /**
     * The number of HTML {@code TagNode} elements that have an {@code 'alt'} attribute, when
     * queried using {@code TagNode.AV("alt")}
     */
    public final short hasAValt;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'target'} attribute, when
     * queried using {@code TagNode.AV("target")}
     */
    public final short hasAVtarget;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'width'} attribute, when
     * queried using {@code TagNode.AV("width")}
     */
    public final short hasAVwidth;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'height'} attribute, when
     * queried using {@code TagNode.AV("height")}
     */
    public final short hasAVheight;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'size'} attribute, when
     * queried using {@code TagNode.AV("size")}
     */
    public final short hasAVsize;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'sizes'} attribute, when
     * queried using {@code TagNode.AV("sizes")}
     */
    public final short hasAVsizes;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'cols'} attribute, when
     * queried using {@code TagNode.AV("cols")}
     */
    public final short hasAVcols;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'colspan'} attribute, when
     * queried using {@code TagNode.AV("colspan")}
     */
    public final short hasAVcolspan;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'rows'} attribute, when
     * queried using {@code TagNode.AV("rows")}
     */
    public final short hasAVrows;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'rowspan'} attribute, when
     * queried using {@code TagNode.AV("rowspan")}
     */
    public final short hasAVrowspan;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'wrap'} attribute, when
     * queried using {@code TagNode.AV("wrap")}
     */
    public final short hasAVwrap;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'value'} attribute, when
     * queried using {@code TagNode.AV("value")}
     */
    public final short hasAVvalue;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'type'} attribute, when
     * queried using {@code TagNode.AV("type")}
     */
    public final short hasAVtype;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'name'} attribute, when
     * queried using {@code TagNode.AV("name")}
     */
    public final short hasAVname;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'min'} attribute, when
     * queried using {@code TagNode.AV("min")}
     */
    public final short hasAVmin;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'max'} attribute, when
     * queried using {@code TagNode.AV("max")}
     */
    public final short hasAVmax;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'minlength'} attribute, when
     * queried using {@code TagNode.AV("minlength")}
     */
    public final short hasAVminlength;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'maxlength'} attribute, when
     * queried using {@code TagNode.AV("maxlength")}
     */
    public final short hasAVmaxlength;

    /**
     * The number of HTML {@code TagNode} elements that have a {@code 'accept'} attribute, when
     * queried using {@code TagNode.AV("accept")}
     */
    public final short hasAVaccept;






    /** This is identical to the value returned by: {@code pageVector.size()} */
    public final int numNodes;

    /**
     * The number of {@code HTMLNode's} in the {@code Vector<HTMLNode>} that qualify as an
     * {@code "instanceof" TagNode}.
     * 
     * @see Util.Count#tagNodes(Vector)
     * @see Util.Count#tagNodes(Vector, int, int)
     */
    public final int numTagNodes;

    /**
     * The number of {@code HTMLNode's} in the {@code Vector<HTMLNode>} that qualify as an
     * {@code "instanceof" TextNode}.
     * 
     * @see Util.Count#textNodes(Vector)
     * @see Util.Count#textNodes(Vector, int, int)
     */
    public final int numTextNodes;

    /**
     * The number of {@code HTMLNode's} in the {@code Vector<HTMLNode>} that qualify as an
     * {@code "instanceof" CommentNode}.
     * 
     * @see Util.Count#commentNodes(Vector)
     * @see Util.Count#commentNodes(Vector, int, int)
     */
    public final int numCommentNodes;

    /**
     * This is the total number of new-line {@code '\n'} characters found inside any
     * {@code TextNode} present in the page-vector.
     * 
     * @see Util.Count#newLines(Vector)
     * @see Util.Count#newLines(Vector, int, int)
     */
    public final int numNewLines;

    /**
     * The total number of HTML <SPAN CLASS="PAGESTATS">&lt;IMG ...&gt;</SPAN> {@code 'TagNode'}
     * elements found on the page.
     * 
     * <BR /><BR /><B><SPAN STYLE='color: red;'>NOTE:</B></SPAN> This is considered an HTML-5
     * {@code 'Singleton'} element, and thusly should only have an "Opening-Tag Version" of the
     * Element.  If there are (accidentally) closing-versions of this tag, they will not be counted
     * by {@code class PageStats}
     */
    public final short numImages;

    /**
     * The total number of HTML <SPAN CLASS="PAGESTATS">&lt;META ...&gt;</SPAN> {@code 'TagNode'}
     * elements found on the page.
     * 
     * <BR /><BR /><B><SPAN STYLE='color: red;'>NOTE:</B></SPAN> This is considered an HTML-5
     * {@code 'Singleton'} element, and thusly should only have an "Opening-Tag Version" of the
     * Element.  If there are (accidentally) closing-versions of this tag, they will not be counted
     * by {@code class PageStats}
     */
    public final short numMeta;

    /** 
     * The total number of HTML <SPAN CLASS="PAGESTATS">&lt;LINK ...&gt;</SPAN> {@code 'TagNode'}
     * elements found on the page.
     * 
     * <BR /><BR /><B><SPAN STYLE='color: red;'>NOTE:</B></SPAN> This is considered an HTML-5
     * {@code 'Singleton'} element, and thusly should only have an "Opening-Tag Version" of the
     * Element.  If there are (accidentally) closing-versions of this tag, they will not be counted
     * by {@code class PageStats}
     */
    public final short numLink;

    /**
     * The total number of HTML <SPAN CLASS="PAGESTATS">&lt;INPUT ...&gt;</SPAN> {@code 'TagNode'}
     * elements found on the page.
     * 
     * <BR /><BR /><B><SPAN STYLE='color: red;'>NOTE:</B></SPAN> This is considered an HTML-5
     * {@code 'Singleton'} element, and thusly should only have an "Opening-Tag Version" of the
     * Element.  If there are (accidentally) closing-versions of this tag, they will not be counted
     * by {@code class PageStats}
     */
    public final short numInput;

    /**
     * The total number of HTML <SPAN CLASS="PAGESTATS">&lt;EMBED ...&gt;</SPAN> {@code 'TagNode'}
     * elements found on this page.
     * 
     * <BR /><BR /><B><SPAN STYLE='color: red;'>NOTE:</B></SPAN> This is considered an HTML-5
     * {@code 'Singleton'} element, and thusly should only have an "Opening-Tag Version" of the
     * Element.  If there are (accidentally) closing-versions of this tag, they will not be counted
     * by {@code class PageStats}
     */
    public final short numEmbed;

    /**
     * The total number of HTML <SPAN CLASS="PAGESTATS">&lt;HR&gt;</SPAN> {@code 'TagNode'}
     * elements found on the page.
     * 
     * <BR /><BR /><B><SPAN STYLE='color: red;'>NOTE:</B></SPAN> This is considered an HTML-5
     * {@code 'Singleton'} element, and thusly should only have an "Opening-Tag Version" of the
     * Element.  If there are (accidentally) closing-versions of this tag, they will not be counted
     * by {@code class PageStats}
     */
    public final short numHR;

    /**
     * The total number of HTML <SPAN CLASS="PAGESTATS">&lt;BR&gt;</SPAN> {@code 'TagNode'}
     * elements found on the page.
     * 
     * <BR /><BR /><B><SPAN STYLE='color: red;'>NOTE:</B></SPAN> This is considered an HTML-5
     * {@code 'Singleton'} element, and thusly should only have an "Opening-Tag Version" of the
     * Element.  If there are (accidentally) closing-versions of this tag, they will not be counted
     * by {@code class PageStats}
     */
    public final short numBR;


    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;TABLE&gt;, TC.OpeningTags, TagNode</SPAN>
     * elements found on the page.  Any element-internal attributes / inner-tags actually found
     * inside the HTML element will just be ignored for the purposes of this count.
     */
    public final short numOpenTables;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;/TABLE&gt;, TC.ClosingTags, TagNode</SPAN>
     * elements found on the page.
     */
    public final short numClosedTables;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;A&gt; (Anchor), TC.OpeningTags,
     * TagNode</SPAN> elements found on the page.  Any element-internal attributes / inner-tags
     * actually found inside the HTML element will just be ignored for the purposes of this count.
     */
    public final short numOpenAnchors;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;/A&gt;, TC.ClosingTags, TagNode</SPAN>
     * elements found on the page.
     */
    public final short numClosedAnchors;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;P&gt; (Paragraph), TC.OpeningTags,
     * TagNode</SPAN> elements found on the page.  Any element-internal attributes / inner-tags
     * actually found inside the HTML element will just be ignored for the purposes of this count.
     */
    public final short numOpenParagraphs;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;/P&gt;, TC.ClosingTags, TagNode</SPAN>
     * elements found on the page.
     */
    public final short numClosedParagraphs;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;DIV&gt; (Divider), TC.OpeningTags,
     * TagNode</SPAN> elements found on the page.  Any element-internal attributes / inner-tags
     * actually found inside the HTML element will just be ignored for the purposes of this count.
     */
    public final short numOpenDivs;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;/DIV&gt;, TC.ClosingTags, TagNode</SPAN>
     * elements found on the page.
     */
    public final short numClosedDivs;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;SPAN&gt;, TC.OpeningTags, TagNode</SPAN>
     * elements found on the page.  Any element-internal attributes / inner-tags actually found
     * inside the HTML element will just be ignored for the purposes of this count.
     */
    public final short numOpenSpans;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;/SPAN&gt;, TC.ClosingTags, TagNode</SPAN>
     * elements found on the page.
     */
    public final short numClosedSpans;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;SCRIPT&gt;, TC.OpeningTags, TagNode</SPAN>
     * elements found on the page.  Any element-internal attributes / inner-tags actually found
     * inside the HTML element will just be ignored for the purposes of this count.
     */
    public final short numOpenScripts;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;/SCRIPT&gt;, TC.ClosingTags, TagNode</SPAN>
     * elements found on the page.
     */
    public final short numClosedScripts;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;STYLE&gt;, TC.OpeningTags, TagNode</SPAN>
     * elements found on the page.  Any element-internal attributes / inner-tags actually found
     * inside the HTML element will just be ignored for the purposes of this count.
     */
    public final short numOpenStyles;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;/STYLE&gt;, TC.ClosingTags, TagNode</SPAN>
     * elements found on the page.
     */
    public final short numClosedStyles;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;FRAME&gt;, TC.OpeningTags, TagNode</SPAN>
     * elements found on the page.  Any element-internal attributes / inner-tags actually found
     * inside the HTML element will just be ignored for the purposes of this count.
     */
    public final short numOpenFrames;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;/FRAME&gt;, TC.ClosingTags, TagNode</SPAN>
     * elements found on the page.
     */
    public final short numClosedFrames;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;IFRAME&gt;, TC.OpeningTags, TagNode</SPAN>
     * elements found on the page.  Any element-internal attributes / inner-tags actually found
     * inside the HTML element will just be ignored for the purposes of this count.
     */
    public final short numOpenIFrames;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;/IFRAME&gt;, TC.ClosingTags, TagNode</SPAN>
     * elements found on the page.
     */
    public final short numClosedIFrames;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;FORM&gt;, TC.OpeningTags, TagNode</SPAN>
     * elements found on the page.  Any element-internal attributes / inner-tags actually found
     * inside the HTML element will just be ignored for the purposes of this count.
     */
    public final short numOpenForms;

    /**
     * The total number of <SPAN CLASS="PAGESTATS">&lt;/FORM&gt;, TC.ClosingTags, TagNode</SPAN>
     * elements found on the page.
     */
    public final short numClosedForms;

    /**
     * Internally used by the 'clone' method.
     * 
     * @param otherPageStats This is the instance of PageStats to be copied
     */
    protected PageStats(PageStats otherPageStats)
    {
        this.hasAVclass             = otherPageStats.hasAVclass;
        this.hasAVstyle             = otherPageStats.hasAVstyle;
        this.hasAVid                = otherPageStats.hasAVid;
        this.hasAVtitle             = otherPageStats.hasAVtitle;
        this.hasAVhref              = otherPageStats.hasAVhref;
        this.hasAVhreflang          = otherPageStats.hasAVhreflang;
        this.hasAVsrc               = otherPageStats.hasAVsrc;
        this.hasAVsrcset            = otherPageStats.hasAVsrcset;
        this.hasAVsrclang           = otherPageStats.hasAVsrclang;
        this.hasAVsrcdoc            = otherPageStats.hasAVsrcdoc;
        this.hasAValt               = otherPageStats.hasAValt;
        this.hasAVtarget            = otherPageStats.hasAVtarget;
        this.hasAVwidth             = otherPageStats.hasAVwidth;
        this.hasAVheight            = otherPageStats.hasAVheight;
        this.hasAVsize              = otherPageStats.hasAVsize;
        this.hasAVsizes             = otherPageStats.hasAVsizes;
        this.hasAVcols              = otherPageStats.hasAVcols;
        this.hasAVcolspan           = otherPageStats.hasAVcolspan;
        this.hasAVrows              = otherPageStats.hasAVrows;
        this.hasAVrowspan           = otherPageStats.hasAVrowspan;
        this.hasAVwrap              = otherPageStats.hasAVwrap;
        this.hasAVvalue             = otherPageStats.hasAVvalue;
        this.hasAVtype              = otherPageStats.hasAVtype;
        this.hasAVname              = otherPageStats.hasAVname;
        this.hasAVmin               = otherPageStats.hasAVmin;
        this.hasAVmax               = otherPageStats.hasAVmax;
        this.hasAVminlength         = otherPageStats.hasAVminlength;
        this.hasAVmaxlength         = otherPageStats.hasAVmaxlength;
        this.hasAVaccept            = otherPageStats.hasAVaccept;

        this.numImages              = otherPageStats.numImages;
        this.numMeta                = otherPageStats.numMeta;
        this.numLink                = otherPageStats.numLink;
        this.numInput               = otherPageStats.numInput;
        this.numEmbed               = otherPageStats.numEmbed ;
        this.numHR                  = otherPageStats.numHR;
        this.numBR                  = otherPageStats.numBR;

        this.numOpenTables          = otherPageStats.numOpenTables;
        this.numClosedTables        = otherPageStats.numClosedTables;
        this.numOpenAnchors         = otherPageStats.numOpenAnchors;
        this.numClosedAnchors       = otherPageStats.numClosedAnchors;
        this.numOpenParagraphs      = otherPageStats.numOpenParagraphs;
        this.numClosedParagraphs    = otherPageStats.numClosedParagraphs;
        this.numOpenDivs            = otherPageStats.numOpenDivs;
        this.numClosedDivs          = otherPageStats.numClosedDivs;
        this.numOpenSpans           = otherPageStats.numOpenSpans;
        this.numClosedSpans         = otherPageStats.numClosedSpans;
        this.numOpenScripts         = otherPageStats.numOpenScripts;
        this.numClosedScripts       = otherPageStats.numClosedScripts;
        this.numOpenStyles          = otherPageStats.numOpenStyles;
        this.numClosedStyles        = otherPageStats.numClosedStyles;
        this.numOpenFrames          = otherPageStats.numOpenFrames;
        this.numClosedFrames        = otherPageStats.numClosedFrames;
        this.numOpenIFrames         = otherPageStats.numOpenIFrames;
        this.numClosedIFrames       = otherPageStats.numClosedIFrames;
        this.numOpenForms           = otherPageStats.numOpenForms;
        this.numClosedForms         = otherPageStats.numClosedForms;

        this.strLength              = otherPageStats.strLength;
        this.hash                   = otherPageStats.hash;
        this.numNodes               = otherPageStats.numNodes;
        this.numTagNodes            = otherPageStats.numTagNodes;
        this.numTextNodes           = otherPageStats.numTextNodes;
        this.numCommentNodes        = otherPageStats.numCommentNodes;
        this.numNewLines            = otherPageStats.numNewLines;
    }

    /**
     * Constructs a new instance of PageStats.  Assigns values based on a vectorized-webpage to the
     * individual fields in this class.
     * 
     * @param page Any HTML page or sub-page.
     * 
     * @see Util#strLength(Vector)
     * @see Util#hashCode(Vector)
     * @see Util.Count#tagNodes(Vector)
     * @see Util.Count#textNodes(Vector)
     * @see Util.Count#commentNodes(Vector)
     * @see Util.Count#newLines(Vector)
     * @see TagNodeFindInclusive
     * @see TagNodeCount
     * @see TagNode#AV(String)
     */
    public PageStats(Vector<HTMLNode> page)
    {
        this.strLength              = Util.strLength(page);
        this.hash                   = Util.hashCode(page);
        this.numNodes               = page.size();
        this.numTagNodes            = Util.Count.tagNodes(page);
        this.numTextNodes           = Util.Count.textNodes(page);
        this.numCommentNodes        = Util.Count.commentNodes(page);
        this.numNewLines            = Util.Count.newLines(page);

        short numImages, numMeta, numLink, numInput, numEmbed, numHR, numBR;
        numImages = numMeta = numLink = numInput = numEmbed = numHR = numBR = 0;

        short hasAVclass, hasAVstyle, hasAVid, hasAVtitle, hasAVhref, hasAVhreflang, hasAVsrc;
        short hasAVsrcset, hasAVsrclang, hasAVsrcdoc, hasAValt, hasAVtarget, hasAVwidth;
        short hasAVheight, hasAVsize, hasAVsizes, hasAVcols, hasAVcolspan, hasAVrows, hasAVrowspan;
        short hasAVwrap, hasAVvalue, hasAVtype, hasAVname, hasAVmin, hasAVmax, hasAVminlength;
        short hasAVmaxlength, hasAVaccept;

        hasAVclass = hasAVstyle = hasAVid = hasAVtitle = hasAVhref = hasAVhreflang = hasAVsrc = 
        hasAVsrcset = hasAVsrclang = hasAVsrcdoc = hasAValt = hasAVtarget = hasAVwidth = 
        hasAVheight = hasAVsize = hasAVsizes = hasAVcols = hasAVcolspan = hasAVrows =
        hasAVrowspan = hasAVwrap = hasAVvalue = hasAVtype = hasAVname = hasAVmin = hasAVmax = 
        hasAVminlength = hasAVmaxlength = hasAVaccept = 0;

        short numOpenTables, numClosedTables, numOpenAnchors, numClosedAnchors, numOpenParagraphs;
        short numClosedParagraphs, numOpenDivs, numClosedDivs, numOpenSpans, numClosedSpans;
        short numOpenScripts, numClosedScripts, numOpenStyles, numClosedStyles, numOpenFrames;
        short numClosedFrames, numOpenIFrames, numClosedIFrames, numOpenForms, numClosedForms;

        numOpenTables = numClosedTables = numOpenAnchors = numClosedAnchors = numOpenParagraphs = 
        numClosedParagraphs = numOpenDivs = numClosedDivs = numOpenSpans = numClosedSpans = 
        numOpenScripts = numClosedScripts = numOpenStyles = numClosedStyles = numOpenFrames = 
        numClosedFrames = numOpenIFrames = numClosedIFrames = numOpenForms = numClosedForms = 0;

        for (HTMLNode n : page) if (n.isTagNode())
        {
            TagNode tn = (TagNode) n;
            List<String> l = tn.allAN().collect(Collectors.toList());

            if (l.size() > 0)
            {
                if (l.contains("class"))     { l.remove("class");       hasAVclass++;       }
                if (l.contains("style"))     { l.remove("style");       hasAVstyle++;       }
                if (l.contains("id"))        { l.remove("id");          hasAVid++;          }
                if (l.contains("title"))     { l.remove("title");       hasAVtitle++;       }
                if (l.contains("href"))      { l.remove("href");        hasAVhref++;        }
                if (l.contains("hreflang"))  { l.remove("hreflang");    hasAVhreflang++;    }
                if (l.contains("src"))       { l.remove("src");         hasAVsrc++;         }
                if (l.contains("srcset"))    { l.remove("srcset");      hasAVsrcset++;      }
                if (l.contains("srclang"))   { l.remove("srclang");     hasAVsrclang++;     }
                if (l.contains("srcdoc"))    { l.remove("srcdoc");      hasAVsrcdoc++;      }
                if (l.contains("alt"))       { l.remove("alt");         hasAValt++;         }
                if (l.contains("target"))    { l.remove("target");      hasAVtarget++;      }
                if (l.contains("width"))     { l.remove("width");       hasAVwidth++;       }
                if (l.contains("height"))    { l.remove("height");      hasAVheight++;      }
                if (l.contains("size"))      { l.remove("size");        hasAVsize++;        }
                if (l.contains("sizes"))     { l.remove("sizes");       hasAVsizes++;       }
                if (l.contains("cols"))      { l.remove("cols");        hasAVcols++;        }
                if (l.contains("colspan"))   { l.remove("colspan");     hasAVcolspan++;     }
                if (l.contains("rows"))      { l.remove("rows");        hasAVrows++;        }
                if (l.contains("rowspan"))   { l.remove("rowspan");     hasAVrowspan++;     }
                if (l.contains("wrap"))      { l.remove("wrap");        hasAVwrap++;        }
                if (l.contains("value"))     { l.remove("value");       hasAVvalue++;       }
                if (l.contains("type"))      { l.remove("type");        hasAVtype++;        }
                if (l.contains("name"))      { l.remove("name");        hasAVname++;        }
                if (l.contains("min"))       { l.remove("min");         hasAVmin++;         }
                if (l.contains("max"))       { l.remove("max");         hasAVmax++;         }
                if (l.contains("minlength")) { l.remove("minlength");   hasAVminlength++;   }
                if (l.contains("maxlength")) { l.remove("maxlength");   hasAVmaxlength++;   }
                if (l.contains("accept"))    { l.remove("accept");      hasAVaccept++;      }
            }

            if      (tn.tok.equals("img"))      numImages++;
            else if (tn.tok.equals("meta"))     numMeta++;
            else if (tn.tok.equals("link"))     numLink++;
            else if (tn.tok.equals("input"))    numInput++;
            else if (tn.tok.equals("embed"))    numEmbed++;
            else if (tn.tok.equals("hr"))       numHR++;
            else if (tn.tok.equals("br"))       numBR++;


            if      (tn.tok.equals("table"))
            { if (tn.isClosing)  numClosedTables++;     else numOpenTables++;       }

            else if (tn.tok.equals("a"))
            { if (tn.isClosing)  numClosedAnchors++;    else numOpenAnchors++;      }

            else if (tn.tok.equals("p"))
            { if (tn.isClosing)  numClosedParagraphs++; else numOpenParagraphs++;   }

            else if (tn.tok.equals("div"))
            { if (tn.isClosing)  numClosedDivs++;       else numOpenDivs++;         }

            else if (tn.tok.equals("span"))
            { if (tn.isClosing)  numClosedSpans++;      else numOpenSpans++;        }

            else if (tn.tok.equals("script"))
            { if (tn.isClosing)  numClosedScripts++;    else numOpenScripts++;      }

            else if (tn.tok.equals("style"))
            { if (tn.isClosing)  numClosedStyles++;     else numOpenStyles++;       }

            else if (tn.tok.equals("frame"))
            { if (tn.isClosing)  numClosedFrames++;     else numOpenFrames++;       }

            else if (tn.tok.equals("iframe"))
            { if (tn.isClosing)  numClosedIFrames++;    else numOpenIFrames++;      }

            else if (tn.tok.equals("form"))
            { if (tn.isClosing)  numClosedForms++;      else numOpenForms++;        }
        }

        this.numImages              = numImages;
        this.numMeta                = numMeta;
        this.numLink                = numLink;
        this.numInput               = numInput;
        this.numEmbed               = numEmbed;
        this.numHR                  = numHR;
        this.numBR                  = numBR;


        this.hasAVclass             = hasAVclass;
        this.hasAVstyle             = hasAVstyle;
        this.hasAVid                = hasAVid;
        this.hasAVtitle             = hasAVtitle;
        this.hasAVhref              = hasAVhref;
        this.hasAVhreflang          = hasAVhreflang;
        this.hasAVsrc               = hasAVsrc;
        this.hasAVsrcset            = hasAVsrcset;
        this.hasAVsrclang           = hasAVsrclang;
        this.hasAVsrcdoc            = hasAVsrcdoc;
        this.hasAValt               = hasAValt;
        this.hasAVtarget            = hasAVtarget;
        this.hasAVwidth             = hasAVwidth;
        this.hasAVheight            = hasAVheight;
        this.hasAVsize              = hasAVsize;
        this.hasAVsizes             = hasAVsizes;
        this.hasAVcols              = hasAVcols;
        this.hasAVcolspan           = hasAVcolspan;
        this.hasAVrows              = hasAVrows;
        this.hasAVrowspan           = hasAVrowspan;
        this.hasAVwrap              = hasAVwrap;
        this.hasAVvalue             = hasAVvalue;
        this.hasAVtype              = hasAVtype;
        this.hasAVname              = hasAVname;
        this.hasAVmin               = hasAVmin;
        this.hasAVmax               = hasAVmax;
        this.hasAVminlength         = hasAVminlength;
        this.hasAVmaxlength         = hasAVmaxlength;
        this.hasAVaccept            = hasAVaccept;


        this.numOpenTables          = numOpenTables;
        this.numClosedTables        = numClosedTables;
        this.numOpenAnchors         = numOpenAnchors;
        this.numClosedAnchors       = numClosedAnchors;
        this.numOpenParagraphs      = numOpenParagraphs;
        this.numClosedParagraphs    = numClosedParagraphs;
        this.numOpenDivs            = numOpenDivs;
        this.numClosedDivs          = numClosedDivs;
        this.numOpenSpans           = numOpenSpans;
        this.numClosedSpans         = numClosedSpans;
        this.numOpenScripts         = numOpenScripts;
        this.numClosedScripts       = numClosedScripts;
        this.numOpenStyles          = numOpenStyles;
        this.numClosedStyles        = numClosedStyles;
        this.numOpenFrames          = numOpenFrames;
        this.numClosedFrames        = numClosedFrames;
        this.numOpenIFrames         = numOpenIFrames;
        this.numClosedIFrames       = numClosedIFrames;
        this.numOpenForms           = numOpenForms;
        this.numClosedForms         = numClosedForms;
    }

    /**
     * Java's {@code public boolean equals(Object o)} requirements.
     * 
     * @param o This may be any Java Object, but only ones of {@code 'this'} type whose
     * internal-values are identical will cause this method to return {@code TRUE}.
     * 
     * @return {@code TRUE} if {@code 'this'} instance of {@code PageStats} is identical to
     * parameter {@code 'o'.}
     */
    public boolean equals(Object o)
    {
        if (! (o instanceof PageStats)) return false;

        PageStats otherPageStats = (PageStats) o;

        return
            (this.strLength             == otherPageStats.strLength)            &&
            (this.hash                  == otherPageStats.hash)                 &&
            (this.numNodes              == otherPageStats.numNodes)             &&
            (this.numTagNodes           == otherPageStats.numTagNodes)          &&
            (this.numTextNodes          == otherPageStats.numTextNodes)         &&
            (this.numCommentNodes       == otherPageStats.numCommentNodes)      &&
            (this.numNewLines           == otherPageStats.numNewLines)          &&


            (this.hasAVclass            == otherPageStats.hasAVclass)           &&
            (this.hasAVstyle            == otherPageStats.hasAVstyle)           &&
            (this.hasAVid               == otherPageStats.hasAVid)              &&
            (this.hasAVtitle            == otherPageStats.hasAVtitle)           &&
            (this.hasAVhref             == otherPageStats.hasAVhref)            &&
            (this.hasAVhreflang         == otherPageStats.hasAVhreflang)        &&
            (this.hasAVsrc              == otherPageStats.hasAVsrc)             &&
            (this.hasAVsrcset           == otherPageStats.hasAVsrcset)          &&
            (this.hasAVsrclang          == otherPageStats.hasAVsrclang)         &&
            (this.hasAVsrcdoc           == otherPageStats.hasAVsrcdoc)          &&
            (this.hasAValt              == otherPageStats.hasAValt)             &&
            (this.hasAVtarget           == otherPageStats.hasAVtarget)          &&
            (this.hasAVwidth            == otherPageStats.hasAVwidth)           &&
            (this.hasAVheight           == otherPageStats.hasAVheight)          &&
            (this.hasAVsize             == otherPageStats.hasAVsize)            &&
            (this.hasAVsizes            == otherPageStats.hasAVsizes)           &&
            (this.hasAVcols             == otherPageStats.hasAVcols)            &&
            (this.hasAVcolspan          == otherPageStats.hasAVcolspan)         &&
            (this.hasAVrows             == otherPageStats.hasAVrows)            &&
            (this.hasAVrowspan          == otherPageStats.hasAVrowspan)         &&
            (this.hasAVwrap             == otherPageStats.hasAVwrap)            &&
            (this.hasAVvalue            == otherPageStats.hasAVvalue)           &&
            (this.hasAVtype             == otherPageStats.hasAVtype)            &&
            (this.hasAVname             == otherPageStats.hasAVname)            &&
            (this.hasAVmin              == otherPageStats.hasAVmin)             &&
            (this.hasAVmax              == otherPageStats.hasAVmax)             &&
            (this.hasAVminlength        == otherPageStats.hasAVminlength)       &&
            (this.hasAVmaxlength        == otherPageStats.hasAVmaxlength)       &&
            (this.hasAVaccept           == otherPageStats.hasAVaccept)          &&


            (this.numImages             == otherPageStats.numImages)            &&
            (this.numMeta               == otherPageStats.numMeta)              &&
            (this.numLink               == otherPageStats.numLink)              &&
            (this.numInput              == otherPageStats.numInput)             &&
            (this.numEmbed              == otherPageStats.numEmbed)             &&
            (this.numHR                 == otherPageStats.numHR)                &&
            (this.numBR                 == otherPageStats.numBR)                &&


            (this.numOpenTables         == otherPageStats.numOpenTables)        &&
            (this.numClosedTables       == otherPageStats.numClosedTables)      &&

            (this.numOpenAnchors        == otherPageStats.numOpenAnchors)       &&
            (this.numClosedAnchors      == otherPageStats.numClosedAnchors)     &&

            (this.numOpenParagraphs     == otherPageStats.numOpenParagraphs)    &&
            (this.numClosedParagraphs   == otherPageStats.numClosedParagraphs)  &&

            (this.numOpenDivs           == otherPageStats.numOpenDivs)          &&
            (this.numClosedDivs         == otherPageStats.numClosedDivs)        &&

            (this.numOpenSpans          == otherPageStats.numOpenSpans)         &&
            (this.numClosedSpans        == otherPageStats.numClosedSpans)       &&

            (this.numOpenScripts        == otherPageStats.numOpenScripts)       &&
            (this.numClosedScripts      == otherPageStats.numClosedScripts)     &&

            (this.numOpenStyles         == otherPageStats.numOpenStyles)        &&
            (this.numClosedStyles       == otherPageStats.numClosedStyles)      &&

            (this.numOpenFrames         == otherPageStats.numOpenFrames)        &&
            (this.numClosedFrames       == otherPageStats.numClosedFrames)      &&

            (this.numOpenIFrames        == otherPageStats.numOpenIFrames)       &&
            (this.numClosedIFrames      == otherPageStats.numClosedIFrames)     &&

            (this.numOpenForms          == otherPageStats.numOpenForms)         &&
            (this.numClosedForms        == otherPageStats.numClosedForms);
    }

    /**
     * Java's hash-code requirement.  Notice that this method is not static, and provides the
     * hashCode that was computed for the vectorized-webpage when this instance of
     * {@code PageStats} was created.  Perhaps the subtlety is noticeable - <I>there is also a
     * {@code public static} version of method {@code int hashCode(); }</I> Both of them will
     * return the same number, but only one of them actually computes a hash-code (the
     * static-method). This non-static merely retrieves the hash that was created when this
     * instance was built by the constructor.
     * 
     * @return A hash-code that may be used when storing this node in a java sorted-collection.
     */
    public int hashCode() { return this.hash; }

    /**
     * Java's {@code interface Comparable<T>} requirements.  This does a very simple comparison
     * using the underlying field {@code final String str} that all HTMLNode's contain.
     * 
     * @param other Any other {@code PageStats} to be compared to {@code 'this' PageStats}
     * 
     * @return An integer that fulfills Java's {@code interface Comparable<T> public boolean
     * compareTo(T t)} method requirements.
     */
    public int compareTo(PageStats other)
    {
        int compare1 = this.numNodes - other.numNodes;
        if (compare1 != 0) return compare1;
        return this.strLength - other.strLength;
    }


    /**
     * This converts a {@code PageStats} object to a simple-string (Base64 Encoded) object that may
     * be passed and transmitted as a String.
     * 
     * @return Zipped, Serialized, Base-64 Encoded String version of this object.
     * 
     * @see StringParse#objToB64Str(Object)
     */
    public String toB64String()
    { try { return StringParse.objToB64Str(this); } catch (Exception e) { return null; } }

    /**
     * Convets a Base65 Encoded {@code String} into an instance of {@code PageStats}
     *
     * @param minimized A previously minimized, compressed, Serialized version of this object
     * ({@code PageStats}).
     * 
     * @return An instance of this class.
     * 
     * @see StringParse#b64StrToObj(String)
     */
    public static PageStats fromB64String(String minimized)
    {
        try
            { return (PageStats) StringParse.b64StrToObj(minimized); }

        catch (Exception e) { return null; }
    }

    /**
     * Generates a carbon copy of passed reference instance {@code 'PageStats'}
     * 
     * @return Returns a 'clone' of this vector.  Utilizes {@code 'this' class, protected
     * constructor}.
     */
    public PageStats clone() { return new PageStats(this); }


    /**
     * Generates a java string representation of {@code 'this' instance} of {@code class PageStats}
     * 
     * @return a java string of all the details encapsulated by a {@code PageStats} object
     * reference.
     */
    public String toString()
    {
        return
            "strLength            = " + strLength               + '\n' +
            "hash                 = " + hash                    + '\n' +
            "numNodes             = " + numNodes                + '\n' +
            "numTagNodes          = " + numTagNodes             + '\n' +
            "numTextNodes         = " + numTextNodes            + '\n' +
            "numCommentNodes      = " + numCommentNodes         + '\n' +
            "numNewLines          = " + numNewLines             + '\n' +

            "\n" +

            "hasAVclass           = " + hasAVclass              + "\n" + 
            "hasAVstyle           = " + hasAVstyle              + "\n" + 
            "hasAVid              = " + hasAVid                 + "\n" + 
            "hasAVtitle           = " + hasAVtitle              + "\n" + 
            "hasAVhref            = " + hasAVhref               + "\n" + 
            "hasAVhreflang        = " + hasAVhreflang           + "\n" + 
            "hasAVsrc             = " + hasAVsrc                + "\n" + 
            "hasAVsrcset          = " + hasAVsrcset             + "\n" + 
            "hasAVsrclang         = " + hasAVsrclang            + "\n" + 
            "hasAVsrcdoc          = " + hasAVsrcdoc             + "\n" + 
            "hasAValt             = " + hasAValt                + "\n" + 
            "hasAVtarget          = " + hasAVtarget             + "\n" + 
            "hasAVwidth           = " + hasAVwidth              + "\n" + 
            "hasAVheight          = " + hasAVheight             + "\n" + 
            "hasAVsize            = " + hasAVsize               + "\n" + 
            "hasAVsizes           = " + hasAVsizes              + "\n" + 
            "hasAVcols            = " + hasAVcols               + "\n" + 
            "hasAVcolspan         = " + hasAVcolspan            + "\n" + 
            "hasAVrows            = " + hasAVrows               + "\n" + 
            "hasAVrowspan         = " + hasAVrowspan            + "\n" + 
            "hasAVwrap            = " + hasAVwrap               + "\n" + 
            "hasAVvalue           = " + hasAVvalue              + "\n" + 
            "hasAVtype            = " + hasAVtype               + "\n" + 
            "hasAVname            = " + hasAVname               + "\n" + 
            "hasAVmin             = " + hasAVmin                + "\n" + 
            "hasAVmax             = " + hasAVmax                + "\n" + 
            "hasAVminlength       = " + hasAVminlength          + "\n" + 
            "hasAVmaxlength       = " + hasAVmaxlength          + "\n" + 
            "hasAVaccept          = " + hasAVaccept             + "\n" + 

            "\n" +

            "numImages            = " + numImages               + '\n' +
            "numMeta              = " + numMeta                 + '\n' +
            "numLink              = " + numLink                 + '\n' +
            "numInput             = " + numInput                + '\n' +
            "numEmbed             = " + numEmbed                + '\n' +
            "numHR                = " + numHR                   + '\n' +
            "numBR                = " + numBR                   + '\n' +

            "\n" +

            "numOpenTables        = " + numOpenTables           + '\n' +
            "numClosedTables      = " + numClosedTables         + '\n' +

            "numOpenAnchors       = " + numOpenAnchors          + '\n' +
            "numClosedAnchors     = " + numClosedAnchors        + '\n' +

            "numOpenParagraphs    = " + numOpenParagraphs       + '\n' +
            "numClosedParagraphs  = " + numClosedParagraphs     + '\n' +

            "numOpenDivs          = " + numOpenDivs             + '\n' +
            "numClosedDivs        = " + numClosedDivs           + '\n' +

            "numOpenSpans         = " + numOpenSpans            + '\n' +
            "numClosedSpans       = " + numClosedSpans          + '\n' +

            "numOpenScripts       = " + numOpenScripts          + '\n' +
            "numClosedScripts     = " + numClosedScripts        + '\n' +

            "numOpenStyles        = " + numOpenStyles           + '\n' +
            "numClosedStyles      = " + numClosedStyles         + '\n' +

            "numOpenFrames        = " + numOpenFrames           + '\n' +
            "numClosedFrames      = " + numClosedFrames         + '\n' +

            "numOpenIFrames       = " + numOpenIFrames          + '\n' +
            "numClosedIFrames     = " + numClosedIFrames        + '\n' +

            "numOpenForms         = " + numOpenForms            + '\n' +
            "numClosedForms       = " + numClosedForms          + '\n';
    }
}