org.kalypso.commons.java.lang.Strings.java Source code

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Here is the source code for org.kalypso.commons.java.lang.Strings.java

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/*----------------    FILE HEADER KALYPSO ------------------------------------------
 *
 *  This file is part of kalypso.
 *  Copyright (C) 2004 by:
 *
 *  Technical University Hamburg-Harburg (TUHH)
 *  Institute of River and coastal engineering
 *  Denickestrae 22
 *  21073 Hamburg, Germany
 *  http://www.tuhh.de/wb
 *
 *  and
 *
 *  Bjoernsen Consulting Engineers (BCE)
 *  Maria Trost 3
 *  56070 Koblenz, Germany
 *  http://www.bjoernsen.de
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Contact:
 *
 *  E-Mail:
 *  belger@bjoernsen.de
 *  schlienger@bjoernsen.de
 *  v.doemming@tuhh.de
 *
 *  ---------------------------------------------------------------------------*/
package org.kalypso.commons.java.lang;

import jregex.Pattern;
import jregex.RETokenizer;

import org.apache.commons.lang3.StringUtils;

/**
 * @author Dirk Kuch
 */
public final class Strings {
    public static String LINE_SEPARATOR = System.getProperties().getProperty("line.separator", "\n\r"); //$NON-NLS-1$ //$NON-NLS-2$

    private Strings() {
    }

    public static boolean isEmpty(final String string) {
        if (StringUtils.isEmpty(string))
            return true;

        return StringUtils.isEmpty(string.trim());
    }

    public static boolean isNotEmpty(final String string) {
        return !isEmpty(string);
    }

    /**
     * @deprecated removes last letter of an string literal (see perl, ruby, etc.)
     */
    @Deprecated
    public static String chomp(final String s) {
        return StringUtils.chomp(s);
    }

    /**
     * @deprecated removes all white spaces at beginning and end of an string (see perl, ruby, etc)
     */
    @Deprecated
    public static String chop(final String s) {
        return StringUtils.chop(s);
    }

    /**
     * @deprecated use {@link StringUtils}.equals()
     */
    @Deprecated
    public static boolean isEqual(final String s1, final String s2) {
        return StringUtils.equals(s1, s2);
    }

    /**
     * @deprecated use {@link StringUtils}.equalsIgnoreCase()
     */
    @Deprecated
    public static boolean isEqualIgnoreCase(final String s1, final String s2) {
        return StringUtils.equalsIgnoreCase(s1, s2);
    }

    public static String tokenize(final String string, final Pattern... patterns) {
        String working = string;
        for (final Pattern pattern : patterns) {
            final RETokenizer tokenizer = new RETokenizer(pattern, working);
            if (tokenizer.hasMore())
                working = tokenizer.nextToken();
        }

        if (working.equals(string))
            return null;

        return working;
    }

    public static boolean containsEqualIgnoreCase(final String[] strings, final String string) {
        for (final String s : strings) {
            if (StringUtils.equalsIgnoreCase(s, string))
                return true;
        }

        return false;
    }

    public static String chop(final String user, final int lastCharacters) {
        if (StringUtils.isNotEmpty(user) && user.length() > lastCharacters)
            return user.substring(0, user.length() - lastCharacters);

        return user;
    }
}