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package Torello.HTML.NodeSearch.SearchLoops.TagNodesInclusive;

import java.util.Vector;
import java.util.stream.IntStream;

import Torello.HTML.*;

import Torello.HTML.NodeSearch.InclusiveException;
import Torello.Java.LV;

public class TNRemoveIncl
{
    public static int nth (Vector<? extends HTMLNode> html, int nth, LV l, String... htmlTags)
    {
        InclusiveException.check(htmlTags);

        DotPair dp;
        HTMLNode n;

        for (int i = l.start; i < l.end; i++)

            if (
                    ((n = html.elementAt(i)).isTagNode())       
                &&  (((TagNode) n).isTag(TC.OpeningTags, htmlTags))
                &&  ((dp = Util.Inclusive.dotPairOPT(html, i, l.end)) != null)
                &&  (--nth == 0)
            )
                // { Util.Remove.range(html, dp.start, dp.end + 1); return dp.size(); }
                { html.subList(dp.start, dp.end + 1).clear();  return dp.size(); }

        return 0;
    }

    public static int nthFromEnd
        (Vector<? extends HTMLNode> html, int nth, LV l, String... htmlTags)
    {
        InclusiveException.check(htmlTags);

        DotPair     dp;
        HTMLNode    n;

        for (int i = l.end-1; i >= l.start; i--)

            if (
                    ((n = html.elementAt(i)).isTagNode())       
                &&  (((TagNode) n).isTag(TC.OpeningTags, htmlTags))
                &&  ((dp = Util.Inclusive.dotPairOPT(html, i, l.end)) != null)
                &&  (--nth == 0)
            )
                // { Util.Remove.range(html, dp.start, dp.end + 1); return dp.size(); }
                { html.subList(dp.start, dp.end + 1).clear();  return dp.size(); }

        return 0;
    }

    public static int all (Vector<? extends HTMLNode> html, LV l, String... htmlTags)
    {
        InclusiveException.check(htmlTags);

        Vector<DotPair> dpMatches = new Vector<>();
        DotPair         dp;
        HTMLNode        n;

        for (int i = l.start; i < l.end; i++)

            if (
                    ((n = html.elementAt(i)).isTagNode())       
                &&  (((TagNode) n).isTag(TC.OpeningTags, htmlTags))
                &&  ((dp = Util.Inclusive.dotPairOPT(html, i, l.end)) != null)
            )
                dpMatches.addElement(dp);

        // Remove the nodes out of the original page.
        int[] removeArr = DPUtil.toPosArray(dpMatches, true);

        Util.Remove.nodesOPT(html, removeArr);

        return removeArr.length;
    }

    public static int allExcept (Vector<? extends HTMLNode> html, LV l, String... htmlTags)
    {
        InclusiveException.check(htmlTags);

        Vector<DotPair> dpMatches = new Vector<>();
        DotPair         dp;
        HTMLNode        n;

        for (int i = l.start; i < l.end; i++)

            if (
                    ((n = html.elementAt(i)).isTagNode())       
                &&  (((TagNode) n).isTagExcept(TC.OpeningTags, htmlTags))
                &&  ((dp = Util.Inclusive.dotPairOPT(html, i, l.end)) != null)
            )
                dpMatches.addElement(dp);

        // Remove the nodes out of the original page.
        int[] removeArr = DPUtil.toPosArray(dpMatches, true);

        Util.Remove.nodesOPT(html, removeArr);

        return removeArr.length;
    }
}