package parseravvisi_dmiunict;
import java.util.ArrayList;
import java.util.StringTokenizer;
public class Parser {

    public static String LINK = "http://web.dmi.unict.it";
    private String[] conditionManagment = {
        "<div",
        "class=\"views-field",
        "views-field-title\">",
        "<h6",
        "class=\"field-content\"><a"
    };

    public Parser(String str) {

    }

    public ArrayList generaLink(String str) {

        ArrayList<String> arrayString = new ArrayList();
        StringTokenizer sToken = new StringTokenizer(str);

        return sistemaLink(parsingToken(sToken));
    }

     public ArrayList parsingToken (StringTokenizer sToken) {

         ArrayList<String> arrayString = new ArrayList();
        int i=0;
        while (i<conditionManagment.length && sToken.hasMoreTokens()) {
                String str = sToken.nextToken();
                if (i>=conditionManagment.length-1) {
                    arrayString.add(sToken.nextToken());
                    i=0;
                }

                if (str.equals(conditionManagment[i])) {
                    i++;
                }

                else {
                    i=0;
                }
        }
        return arrayString;

    }

    public ArrayList sistemaLink(ArrayList<String> arrayString) {

        ArrayList<String> arrayLink = new ArrayList();
        for (int i=0; i<arrayString.size(); i++) {
            String x = arrayString.get(i);
            StringTokenizer stx = new StringTokenizer(x,"\" ");

            while (stx.hasMoreTokens())
                if(stx.nextToken().equals("href="))
                    arrayLink.add(this.LINK+stx.nextToken());
        }
        return arrayLink;

    }
}