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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* 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.
*
* ============LICENSE_END=========================================================
*/
package org.onap.appc.util;
import org.apache.commons.lang3.StringUtils;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class MessageFormatter {
private static final String paramNameRegexGroupName = "paramName";
/**
* start with ${ and after there is one or more characters that are not $ and not } and ended with }
*/
private static final String paramRegex = "\\$\\{(?<paramName>[^}$]+)\\}";
public static String format(String messageTemplate, Map<String, Object> params) {
if (StringUtils.isEmpty(messageTemplate))
return "";
if (params == null || params.isEmpty())
return messageTemplate;
String formattedMessage = messageTemplate;
if (formattedMessage.contains("$")) {
for (Map.Entry<String, Object> entry : params.entrySet()) {
formattedMessage = formattedMessage.replaceAll("\\$\\{" + entry.getKey() + "\\}",
escapeDollarChar(String.valueOf(entry.getValue())));
}
}
return formattedMessage;
}
private static String escapeDollarChar(String msg) {
String formatedMsg = msg;
if (formatedMsg.contains("$")) {
formatedMsg = formatedMsg.replaceAll("\\$", "\\\\\\$");
}
return formatedMsg;
}
public static List<String> getParamsNamesList(String messageTemplate) {
List<String> paramsNames = null;
if (!StringUtils.isEmpty(messageTemplate)) {
paramsNames = new ArrayList<>();
Matcher m = Pattern.compile(paramRegex).matcher(messageTemplate);
while (m.find()) {
String paramName = m.group(paramNameRegexGroupName);
paramsNames.add(paramName);
}
}
return paramsNames;
}
public static Set<String> getParamsNamesSet(String messageTemplate) {
List<String> paramsNamesList = getParamsNamesList(messageTemplate);
Set<String> paramsNamesSet = null;
if (paramsNamesList != null && !paramsNamesList.isEmpty()) {
paramsNamesSet = new HashSet<String>();
for (String paramName : paramsNamesList) {
paramsNamesSet.add(paramName);
}
}
return paramsNamesSet;
}
}
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