Java Map Replace replace(String str, Map values)

Description

This method replaces ${var} substring by values stored in a map.

License

Apache License

Return

resulted string

Declaration

public static String replace(String str, Map values) 

Method Source Code

//package com.java2s;
/* /*from ww w.  j  a  v  a 2 s . c o  m*/
 * 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.
 */

import java.util.Map;

public class Main {
    /**
     * This method replaces ${var} substring by values stored in a map.
     * @return resulted string
     */
    public static String replace(String str, Map values) {
        int len = str.length();
        StringBuffer sb = new StringBuffer(len);

        int prev = 0;
        int start = str.indexOf("${");
        int end = str.indexOf("}", start);
        while (start != -1 && end != -1) {
            String key = str.substring(start + 2, end);
            Object value = values.get(key);
            if (value != null) {
                sb.append(str.substring(prev, start));
                sb.append(value);
            } else {
                sb.append(str.substring(prev, end + 1));
            }
            prev = end + 1;
            if (prev >= str.length()) {
                break;
            }
            start = str.indexOf("${", prev);
            if (start != -1) {
                end = str.indexOf("}", start);
            }
        }

        sb.append(str.substring(prev));

        return sb.toString();
    }
}

Related

1. replace(Map map, String text)
2. replace(String originalCommand, Map vars)
3. replace(String orign, Map replaceStringMap)
4. replace(String s, Map map)
5. replace(String src, String prefix, String suffix, Map props)
6. replace(String string, Map values)
7. replace(String target, Map arguments)
8. replace(String temp, Map tags)
9. replace(String template, Map funcAndDic)