/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 * 
 *************************************************************/


import java.io.File;
import java.net.MalformedURLException;

public class URLHelper
{
    /**
     * Because the office need URLs for loading/saving documents
     * we must convert used system pathes.
     * And java use another notation for file URLs ... correct it.
     *
     * @param aSystemPath
     *          represent the file in system notation
     *
     * @return [String]
     *          a file url which represent the given system path
     */
    @SuppressWarnings("deprecation")
    public static String getFileURLFromSystemPath( File aSystemPath )
    {
        String sFileURL = null;
        try
        {
            sFileURL = aSystemPath.toURL().toString();
        }
        catch( MalformedURLException exWrong )
        {
            sFileURL = null;
        }

        // problem of java: file URL's are coded with 1 slash instead of 2 or 3 ones!
        // => correct this problem first, otherwise office can't use these URL's
        if(
            (sFileURL                       != null ) &&
            (sFileURL.startsWith("file:/")  == true ) &&
            (sFileURL.startsWith("file://") == false)
          )
        {
            StringBuffer sWorkBuffer = new StringBuffer(sFileURL);
            sWorkBuffer.insert(6,"//");
            sFileURL = sWorkBuffer.toString();
        }

        return sFileURL;
    }
}