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Tools to assist in the reading of configuration/preferences files in
various formats
/*
* 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.
*/
package org.apache.commons.configuration2;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import org.apache.commons.configuration2.convert.ListDelimiterHandler;
import org.apache.commons.lang3.StringUtils;
/**
* Configuration converter. Helper class to convert between Configuration,
* ExtendedProperties and standard Properties.
*
* @author Martin Poeschl
* @version $Id: ConfigurationConverter.java 1842194 2018-09-27 22:24:23Z ggregory $
*/
public final class ConfigurationConverter
{
/** Constant for the default separator for properties with multiple values. */
private static final char DEFAULT_SEPARATOR = ',';
/**
* Private constructor prevents instances from being created.
*/
private ConfigurationConverter()
{
// to prevent instanciation...
}
/**
* Convert a standard Properties class into a configuration class.
*
* @param props properties object to convert
* @return Configuration configuration created from the Properties
*/
public static Configuration getConfiguration(final Properties props)
{
return new MapConfiguration(props);
}
/**
* Convert a Configuration class into a Properties class. List properties
* are joined into a string using either the list delimiter handler of the
* configuration (if it extends AbstractConfiguration) or with a comma as
* delimiter otherwise.
*
* @param config ImmutableConfiguration object to convert
* @return Properties created from the Configuration
* @since 2.2
*/
public static Properties getProperties(final ImmutableConfiguration config)
{
final Properties props = new Properties();
ListDelimiterHandler listHandler;
boolean useDelimiterHandler;
if (config instanceof AbstractConfiguration)
{
listHandler = ((AbstractConfiguration) config).getListDelimiterHandler();
useDelimiterHandler = true;
}
else
{
listHandler = null;
useDelimiterHandler = false;
}
for (final Iterator keys = config.getKeys(); keys.hasNext();)
{
final String key = keys.next();
final List