content: /*
   * Copyright 2022-2023 the original author or authors.
   *
   * 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
   *
   *      https://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 com.alibaba.initializer.core.template;
  
  import java.nio.file.Path;
  import java.nio.file.Paths;
  import java.util.Map;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  /**
   * @author <a href="mailto:chenxilzx1@gmail.com">theonefx</a>
   */
  public class TemplateStringRender {
  
      private static final String PATTERN = "\\$\\{(.*?)\\}";
  
      public Path renderPath(Path input, Map<String, String> params) {
          if (input == null) {
              return null;
          }
          return Paths.get(renderString(input.toString(), params));
      }
  
      public String renderString(String input, Map<String, String> params) {
          if (!input.contains("${")) {
              return input;
          }
  
          Matcher m = Pattern.compile(PATTERN).matcher(input);
  
          String renderedStr = input;
  
          while (m.find()) {
              String key = m.group(1);
              String patten = m.group(0);
              String value = params.get(key);
              while (value != null && renderedStr.contains(patten)) {
                  renderedStr = renderedStr.replace(patten, value);
              }
          }
  
          return renderedStr;
      }
  }