62 lines
2 KiB
Java
62 lines
2 KiB
Java
/*
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* Copyright 2017 Red Hat, Inc. and/or its affiliates
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* and other contributors as indicated by the @author tags.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.keycloak.theme;
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import java.util.Properties;
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/**
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* @author <a href="mailto:mstrukel@redhat.com">Marko Strukelj</a>
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*/
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public class TemplatingUtil {
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public static String resolveVariables(String text, Properties props) {
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return resolveVariables(text, props, "${", "}");
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}
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public static String resolveVariables(String text, Properties props, String startMarker, String endMarker) {
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int e = 0;
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int s = text.indexOf(startMarker);
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if (s == -1) {
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return text;
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} else {
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StringBuilder sb = new StringBuilder();
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do {
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if (e < s) {
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sb.append(text.substring(e, s));
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}
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e = text.indexOf(endMarker, s + startMarker.length());
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if (e != -1) {
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String key = text.substring(s + startMarker.length(), e);
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sb.append(props.getProperty(key, key));
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e += endMarker.length();
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s = text.indexOf(startMarker, e);
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} else {
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e = s;
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break;
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}
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} while (s != -1);
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if (e < text.length()) {
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sb.append(text.substring(e));
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}
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return sb.toString();
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}
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}
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}
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