it.attocchi.utils.StringFunc.java Source code

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Here is the source code for it.attocchi.utils.StringFunc.java

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/*
Copyright (c) 2012,2013 Mirco Attocchi
       
This file is part of WebAppCommon.
    
WebAppCommon 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 3 of the License, or
(at your option) any later version.
    
WebAppCommon 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 WebAppCommon.  If not, see <http://www.gnu.org/licenses/>.
*/

package it.attocchi.utils;

import java.util.Arrays;
import java.util.List;

import org.apache.commons.lang3.StringUtils;

public class StringFunc {

    public static final String NEW_LINE = "\r\n";

    public static String concat(String separator, String... strings) {
        StringBuilder sb = new StringBuilder();

        for (String aString : strings) {
            if (StringUtils.isNotBlank(aString)) {
                if (sb.length() > 0)
                    sb.append(separator);
                sb.append(aString);
            }
        }

        return sb.toString();
    }

    public static boolean equalsIgnoreCase(String string1, String string2) {
        return (string1 != null && string2 != null && string1.equalsIgnoreCase(string2));
    }

    public static boolean contains(String string, String subString) {
        return string != null && !string.isEmpty() && string.indexOf(subString) >= 0;
    }

    public static List<String> readLines(String aText) {
        List<String> res = null;

        if (StringUtils.isNotBlank(aText))
            res = Arrays.asList(StringUtils.split(aText, NEW_LINE));

        return res;
    }

    public static String writeLines(List<String> lines, String defaultValueIfEmpty) {
        String res = defaultValueIfEmpty;

        if (ListUtils.isNotEmpty(lines))
            res = StringUtils.join(lines.toArray(), NEW_LINE);

        return res;
    }
}