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Apache Commons VFS is a Virtual File System library.
/*
* 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.vfs2.util;
import java.text.MessageFormat;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
/**
* Formats messages.
*/
public final class Messages {
/**
* Map from message code to MessageFormat object for the message.
*/
private static ConcurrentMap messageMap = new ConcurrentHashMap<>();
private static final ResourceBundle RESOURCES = new CombinedResources("org.apache.commons.vfs2.Resources");
private Messages() {
}
/**
* Formats a message.
*
* @param code The message code.
* @return The formatted message.
*/
public static String getString(final String code) {
return getString(code, new Object[0]);
}
/**
* Formats a message.
*
* @param code The message code.
* @param param The message parameter.
* @return The formatted message.
* @deprecated Will be removed in 3.0 in favor of {@link #getString(String, Object[])} When removed, calls to this
* method will automatically recompile to {@link #getString(String, Object[])}
*/
@Deprecated
public static String getString(final String code, final Object param) {
return getString(code, new Object[] { param });
}
/**
* Formats a message.
*
* @param code The message code.
* @param params The message parameters.
* @return The formatted message.
*/
public static String getString(final String code, final Object... params) {
try {
if (code == null) {
return null;
}
final MessageFormat msg = findMessage(code);
return msg.format(params);
} catch (final MissingResourceException mre) {
return "Unknown message with code \"" + code + "\".";
}
}
/**
* Locates a message by its code.
*/
private static MessageFormat findMessage(final String code) throws MissingResourceException {
// Check if the message is cached
MessageFormat msg = messageMap.get(code);
if (msg != null) {
return msg;
}
final String msgText = RESOURCES.getString(code);
msg = new MessageFormat(msgText);
messageMap.putIfAbsent(code, msg);
return messageMap.get(code);
}
}
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