URLRegExpExtractor.java

/*
 * GovWay - A customizable API Gateway 
 * https://govway.org
 * 
 * Copyright (c) 2005-2025 Link.it srl (https://link.it). 
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3, as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package org.openspcoop2.pdd.core.dynamic;

import java.util.List;

import org.openspcoop2.utils.regexp.RegExpException;
import org.openspcoop2.utils.regexp.RegExpNotFoundException;
import org.openspcoop2.utils.regexp.RegularExpressionEngine;
import org.slf4j.Logger;

/**
 * URLRegExpExtractor
 *
 * @author Andrea Poli (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */
public class URLRegExpExtractor {

    private Logger log;
    
    private String url;
    
    public URLRegExpExtractor(String url, Logger log) {
        this.url = url;
        this.log = log;
    }
    
    public boolean match(String pattern) throws DynamicException {
        String v = read(pattern);
        return v!=null && !"".equals(v);
    }
    
    public String read(String pattern) throws DynamicException {
        String valore = null;
        try {
            valore = RegularExpressionEngine.getStringMatchPattern(this.url, pattern);
        }
        catch(RegExpNotFoundException e){
            this.log.debug("Estrazione '"+pattern+"' non ha trovato risultati: "+e.getMessage(),e);
        }
        catch(RegExpException e){
            throw new DynamicException(e.getMessage(),e);
        }
        catch(Exception e){
            throw new DynamicException("Estrazione '"+pattern+"' fallita: "+e.getMessage(),e);
        }
        return valore;
    }
    
    public List<String> readList(String pattern) throws DynamicException {
        List<String> valore = null;
        try {
            valore = RegularExpressionEngine.getAllStringMatchPattern(this.url, pattern);
        }
        catch(RegExpNotFoundException e){
            this.log.debug("Estrazione '"+pattern+"' non ha trovato risultati: "+e.getMessage(),e);
        }
        catch(RegExpException e){
            throw new DynamicException(e.getMessage(),e);
        }
        catch(Exception e){
            throw new DynamicException("Estrazione '"+pattern+"' fallita: "+e.getMessage(),e);
        }
        return valore;
    }
    
    
    
    public boolean found(String pattern) throws DynamicException {
        String v = find(pattern);
        return v!=null && !"".equals(v);
    }
    
    public String find(String pattern) throws DynamicException {
        String valore = null;
        try {
            valore = RegularExpressionEngine.getStringFindPattern(this.url, pattern);
        }
        catch(RegExpNotFoundException e){
            this.log.debug("Estrazione '"+pattern+"' non ha trovato risultati: "+e.getMessage(),e);
        }
        catch(RegExpException e){
            throw new DynamicException(e.getMessage(),e);
        }
        catch(Exception e){
            throw new DynamicException("Estrazione '"+pattern+"' fallita: "+e.getMessage(),e);
        }
        return valore;
    }
    
    public List<String> findAll(String pattern) throws DynamicException {
        List<String> valore = null;
        try {
            valore = RegularExpressionEngine.getAllStringFindPattern(this.url, pattern);
        }
        catch(RegExpNotFoundException e){
            this.log.debug("Estrazione '"+pattern+"' non ha trovato risultati: "+e.getMessage(),e);
        }
        catch(RegExpException e){
            throw new DynamicException(e.getMessage(),e);
        }
        catch(Exception e){
            throw new DynamicException("Estrazione '"+pattern+"' fallita: "+e.getMessage(),e);
        }
        return valore;
    }
}