org.apache.openejb.util.StringTemplate Maven / Gradle / Ivy
/*
* 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.openejb.util;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class StringTemplate {
public static final Pattern PATTERN = Pattern.compile("(\\{)((\\.|\\w)+)(})");
private final String template;
public StringTemplate(String template) {
this.template = template;
}
public String apply(Map map) {
Matcher matcher = PATTERN.matcher(template);
StringBuffer buf = new StringBuffer();
while (matcher.find()) {
String key = matcher.group(2);
String value = map.get(key);
if (key.toLowerCase().endsWith(".lc")) {
value = map.get(key.substring(0, key.length() - 3)).toLowerCase();
} else if (key.toLowerCase().endsWith(".uc")) {
value = map.get(key.substring(0, key.length() - 3)).toUpperCase();
} else if (key.toLowerCase().endsWith(".cc")) {
value = Strings.camelCase(map.get(key.substring(0, key.length() - 3)));
}
matcher.appendReplacement(buf, value);
}
matcher.appendTail(buf);
return buf.toString();
}
}