net.sf.webdav.util.JoinString Maven / Gradle / Ivy

/**
 * Copyright (C) 2006-2017 Apache Software Foundation (https://sourceforge.net/p/webdav-servlet, https://github.com/Commonjava/webdav-handler)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.sf.webdav.util;

import java.util.Arrays;
import java.util.Collection;

public class JoinString
{

    private final String joint;

    private final Collection items;

    public JoinString( final String joint, final Collection items )
    {
        this.joint = joint;
        this.items = items;
    }

    public JoinString( final String joint, final Object[] items )
    {
        this.joint = joint;
        this.items = Arrays.asList( items );
    }

    @Override
    public String toString()
    {
        if ( items == null || items.isEmpty() )
        {
            return "";
        }

        final StringBuilder sb = new StringBuilder();
        for ( final Object item : items )
        {
            if ( sb.length() > 0 )
            {
                sb.append( joint );
            }

            sb.append( item );
        }

        return sb.toString();
    }

}