/*
    * 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.artifact.repository.metadata.io;
  
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import java.io.File;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.Reader;
  import java.util.Map;
  import java.util.Objects;
  
  import org.apache.maven.artifact.repository.metadata.Metadata;
  import org.apache.maven.artifact.repository.metadata.io.xpp3.MetadataXpp3Reader;
  import org.codehaus.plexus.util.ReaderFactory;
  import org.codehaus.plexus.util.xml.pull.XmlPullParserException;
  
  /**
   * Handles deserialization of metadata from some kind of textual format like XML.
   *
   * @author Benjamin Bentmann
   */
  @Named
  @Singleton
  public class DefaultMetadataReader implements MetadataReader {
  
      public Metadata read(File input, Map<String, ?> options) throws IOException {
          Objects.requireNonNull(input, "input cannot be null");
  
          return read(ReaderFactory.newXmlReader(input), options);
      }
  
      public Metadata read(Reader input, Map<String, ?> options) throws IOException {
          Objects.requireNonNull(input, "input cannot be null");
  
          try (Reader in = input) {
              return new MetadataXpp3Reader().read(in, isStrict(options));
          } catch (XmlPullParserException e) {
              throw new MetadataParseException(e.getMessage(), e.getLineNumber(), e.getColumnNumber(), e);
          }
      }
  
      public Metadata read(InputStream input, Map<String, ?> options) throws IOException {
          Objects.requireNonNull(input, "input cannot be null");
  
          try (InputStream in = input) {
              return new MetadataXpp3Reader().read(in, isStrict(options));
          } catch (XmlPullParserException e) {
              throw new MetadataParseException(e.getMessage(), e.getLineNumber(), e.getColumnNumber(), e);
          }
      }
  
      private boolean isStrict(Map<String, ?> options) {
          Object value = (options != null) ? options.get(IS_STRICT) : null;
          return value == null || Boolean.parseBoolean(value.toString());
      }
  }