001package org.apache.maven.model.io;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *   http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import java.io.File;
023import java.io.FileInputStream;
024import java.io.IOException;
025import java.io.InputStream;
026import java.io.Reader;
027import java.util.Map;
028
029import org.apache.maven.model.InputSource;
030import org.apache.maven.model.Model;
031import org.apache.maven.model.io.xpp3.MavenXpp3Reader;
032import org.apache.maven.model.io.xpp3.MavenXpp3ReaderEx;
033import org.codehaus.plexus.component.annotations.Component;
034import org.codehaus.plexus.util.IOUtil;
035import org.codehaus.plexus.util.ReaderFactory;
036import org.codehaus.plexus.util.xml.pull.XmlPullParserException;
037
038/**
039 * Handles deserialization of a model from some kind of textual format like XML.
040 *
041 * @author Benjamin Bentmann
042 */
043@Component( role = ModelReader.class )
044public class DefaultModelReader
045    implements ModelReader
046{
047
048    @Override
049    public Model read( File input, Map<String, ?> options )
050        throws IOException
051    {
052        if ( input == null )
053        {
054            throw new IllegalArgumentException( "input file missing" );
055        }
056
057        Model model = read( new FileInputStream( input ), options );
058
059        model.setPomFile( input );
060
061        return model;
062    }
063
064    @Override
065    public Model read( Reader input, Map<String, ?> options )
066        throws IOException
067    {
068        if ( input == null )
069        {
070            throw new IllegalArgumentException( "input reader missing" );
071        }
072
073        try
074        {
075            return read( input, isStrict( options ), getSource( options ) );
076        }
077        finally
078        {
079            IOUtil.close( input );
080        }
081    }
082
083    @Override
084    public Model read( InputStream input, Map<String, ?> options )
085        throws IOException
086    {
087        if ( input == null )
088        {
089            throw new IllegalArgumentException( "input stream missing" );
090        }
091
092        try
093        {
094            return read( ReaderFactory.newXmlReader( input ), isStrict( options ), getSource( options ) );
095        }
096        finally
097        {
098            IOUtil.close( input );
099        }
100    }
101
102    private boolean isStrict( Map<String, ?> options )
103    {
104        Object value = ( options != null ) ? options.get( IS_STRICT ) : null;
105        return value == null || Boolean.parseBoolean( value.toString() );
106    }
107
108    private InputSource getSource( Map<String, ?> options )
109    {
110        Object value = ( options != null ) ? options.get( INPUT_SOURCE ) : null;
111        return (InputSource) value;
112    }
113
114    private Model read( Reader reader, boolean strict, InputSource source )
115        throws IOException
116    {
117        try
118        {
119            if ( source != null )
120            {
121                return new MavenXpp3ReaderEx().read( reader, strict, source );
122            }
123            else
124            {
125                return new MavenXpp3Reader().read( reader, strict );
126            }
127        }
128        catch ( XmlPullParserException e )
129        {
130            throw new ModelParseException( e.getMessage(), e.getLineNumber(), e.getColumnNumber(), e );
131        }
132    }
133
134}