ProcessingConfigurationParser.java :  » Maven » maven-config-processor-plugin » com » google » code » configprocessor » parsing » Java Open Source

/*
 * Copyright (C) 2009 Leandro de Oliveira Aparecido <lehphyro@gmail.com>
 *
 * 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
 *
 *         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 com.google.code.configprocessor.parsing;

import java.io.*;

import com.google.code.configprocessor.*;
import com.google.code.configprocessor.processing.*;
import com.thoughtworks.xstream.*;

public class ProcessingConfigurationParser {

  public NestedAction parse(InputStream is) throws ParsingException {
    if (is == null) {
      throw new NullPointerException("InputStream is null");
    }
    return parse(new InputStreamReader(is));
  }

  public NestedAction parse(Reader is) throws ParsingException {
    XStream xstream = getXStream();
    try {
      return (NestedAction) xstream.fromXML(is);
    } catch (Exception e) {
      throw new ParsingException(e);
    }
  }

  protected XStream getXStream() {
    XStream xstream = new XStream();

    xstream.alias("processor", NestedAction.class);
    xstream.alias("add", AddAction.class);
    xstream.alias("modify", ModifyAction.class);
    xstream.alias("remove", RemoveAction.class);
    xstream.alias("comment", CommentAction.class);
    xstream.alias("uncomment", UncommentAction.class);
    xstream.addImplicitCollection(NestedAction.class, "actions");
    xstream.registerConverter(new AddActionConverter());

    return xstream;
  }
}