/*
    * 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.maven.plugins.invoker;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.project.MavenProject;
  import org.codehaus.plexus.interpolation.InterpolationException;
  import org.codehaus.plexus.interpolation.Interpolator;
  import org.codehaus.plexus.interpolation.MapBasedValueSource;
  import org.codehaus.plexus.interpolation.RegexBasedInterpolator;
  
  /**
   * Helper component for interpolating values.
   */
  @Named
  class InterpolatorUtils {
  
      private final Interpolator atInterpolator;
  
      /**
       * A default constructor.
       *
       * @param mavenProject a MavenProject
       */
      @Inject
      InterpolatorUtils(MavenProject mavenProject) {
          atInterpolator = new RegexBasedInterpolator("[@\\$]\\{(.+?)", "}");
          atInterpolator.addValueSource(new MapBasedValueSource(mavenProject.getProperties()));
      }
  
      public String interpolateAtPattern(String value) throws MojoExecutionException {
  
          if (value == null || !(value.contains("@{") || value.contains("${"))) {
              return value;
          }
  
          try {
              return atInterpolator.interpolate(value);
          } catch (InterpolationException e) {
              throw new MojoExecutionException(e.getMessage(), e);
          }
      }
  }