SiLeBAT/FSK-Lab

/*******************************************************************************
 * Copyright (c) 2015 Federal Institute for Risk Assessment (BfR), Germany
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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/>.
 *
 * Contributors:
 *     Department Biological Safety - BfR
 *******************************************************************************/
package de.bund.bfr.knime.pmm.common;

import org.jdom2.Element;

public class XmlHelper {

    private XmlHelper() {
    }

    public static String getString(Element el, String attr) {
        if (el == null || el.getAttributeValue(attr) == null
                || el.getAttributeValue(attr).isEmpty()) {
            return null;
        }

        return el.getAttributeValue(attr);
    }

    public static Integer getInt(Element el, String attr) {
        if (el == null || el.getAttributeValue(attr) == null
                || el.getAttributeValue(attr).isEmpty()) {
            return null;
        }

        try {
            return Integer.valueOf(el.getAttributeValue(attr));
        } catch (NumberFormatException e) {
            return null;
        }
    }

    public static Double getDouble(Element el, String attr) {
        if (el == null || el.getAttributeValue(attr) == null
                || el.getAttributeValue(attr).isEmpty()) {
            return null;
        }

        try {
            return Double.valueOf(el.getAttributeValue(attr));
        } catch (NumberFormatException e) {
            return null;
        }
    }

    public static Boolean getBoolean(Element el, String attr) {
        if (el == null || el.getAttributeValue(attr) == null
                || el.getAttributeValue(attr).isEmpty()) {
            return null;
        }

        return Boolean.valueOf(el.getAttributeValue(attr));
    }

    public static String getNonNull(Object o) {
        if (o == null) {
            return "";
        }

        if (o instanceof Double
                && (((Double) o).isNaN() || ((Double) o).isNaN())) {
            return "";
        }

        return o.toString();
    }

    public static String removeDirt(String toClean) {
        String cleaned = (toClean == null ? "" : toClean);
        cleaned = cleaned.toString().replace("&amp;", "&"); // .replace("\n",
                                                            // " ");
                                                            // //.replaceAll("[^A-Za-zäöüßÄÖÜ0-9+-.,;': ()°%?&=<>/]",
                                                            // "");
        cleaned = cleanInvalidXmlChars(cleaned);
        /*
         * if (toClean != null && !toClean.equals(cleaned)) {
         * System.err.println(toClean); System.err.println(cleaned); }
         */
        return cleaned;
    }

    public static String cleanInvalidXmlChars(String text) {
        String re = "[^^\u0009\r\n\u0020-\uD7FF\uE000-\uFFFD]";
        return text.replaceAll(re, " ");
    }
}