/* 
 *  Copyright or © or Copr. Ecole des Mines d'Alès (2012-2014) 
 *  
 *  This software is a computer program whose purpose is to provide 
 *  several functionalities for the processing of semantic data 
 *  sources such as ontologies or text corpora.
 *  
 *  This software is governed by the CeCILL  license under French law and
 *  abiding by the rules of distribution of free software.  You can  use, 
 *  modify and/ or redistribute the software under the terms of the CeCILL
 *  license as circulated by CEA, CNRS and INRIA at the following URL
 *  "http://www.cecill.info". 
 * 
 *  As a counterpart to the access to the source code and  rights to copy,
 *  modify and redistribute granted by the license, users are provided only
 *  with a limited warranty  and the software's author,  the holder of the
 *  economic rights,  and the successive licensors  have only  limited
 *  liability. 

 *  In this respect, the user's attention is drawn to the risks associated
 *  with loading,  using,  modifying and/or developing or reproducing the
 *  software by the user in light of its specific status of free software,
 *  that may mean  that it is complicated to manipulate,  and  that  also
 *  therefore means  that it is reserved for developers  and  experienced
 *  professionals having in-depth computer knowledge. Users are therefore
 *  encouraged to load and test the software's suitability as regards their
 *  requirements in conditions enabling the security of their systems and/or 
 *  data to be ensured and,  more generally, to use and operate it in the 
 *  same conditions as regards security. 
 * 
 *  The fact that you are presently reading this means that you have had
 *  knowledge of the CeCILL license and that you accept its terms.
 */
package slib.utils.impl;

import slib.utils.ex.SLIB_Ex_Critic;

/**
 *
 * @author Sébastien Harispe (sebastien.harispe@gmail.com)
 */
public class Util {

    /**
     * Only throw a critical exception passing the given message
     *
     * @param message the message used
     * @throws SLIB_Ex_Critic
     */
    public static void error(String message) throws SLIB_Ex_Critic {
        throw new SLIB_Ex_Critic(message);
    }

    /**
     * Convert the given {@link String} to a boolean value. return true if the
     * given string equals null, "true" or "yes". Ignore Case + trim the string.
     *
     * @param value the string to evaluate
     * @return a boolean value according to the defined conditions.
     */
    public static boolean stringToBoolean(String value) {
        if (value != null && (value.trim().equalsIgnoreCase("true") || value.trim().equalsIgnoreCase("yes"))) {
            return true;
        }
        return false;
    }

    /**
     *
     * @param val
     * @return the integer associated to the string
     * @throws SLIB_Ex_Critic
     */
    public static Integer stringToInteger(String val) throws SLIB_Ex_Critic {
        Integer a = null;

        try {
            a = Integer.parseInt(val);
        } catch (NumberFormatException e) {
            Util.error("Cannot convert " + val + " to an integer ");
        }
        return a;
    }

    /**
     *
     * @param val
     * @return the Double associated to the string.
     * @throws SLIB_Ex_Critic
     */
    public static Double stringToDouble(String val) throws SLIB_Ex_Critic {
        Double a = null;

        try {
            a = Double.parseDouble(val);
        } catch (NumberFormatException e) {
            Util.error("Cannot convert " + val + " to an decimal value (double) ");
        }
        return a;
    }

    /**
     *
     * @param val
     * @return the Long associated to the string.
     * @throws SLIB_Ex_Critic
     */
    public static Long stringToLong(String val) throws SLIB_Ex_Critic {
        Long a = null;

        try {
            a = Long.parseLong(val);
        } catch (NumberFormatException e) {
            Util.error("Cannot convert " + val + " to an long value ");
        }
        return a;
    }
}
