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    public Model read( File input, Map<String, ?> options )
049        throws IOException
050    {
051        if ( input == null )
052        {
053            throw new IllegalArgumentException( "input file missing" );
054        }
055
056        Model model = read( new FileInputStream( input ), options );
057
058        model.setPomFile( input );
059
060        return model;
061    }
062
063    public Model read( Reader input, Map<String, ?> options )
064        throws IOException
065    {
066        if ( input == null )
067        {
068            throw new IllegalArgumentException( "input reader missing" );
069        }
070
071        try
072        {
073            return read( input, isStrict( options ), getSource( options ) );
074        }
075        finally
076        {
077            IOUtil.close( input );
078        }
079    }
080
081    public Model read( InputStream input, Map<String, ?> options )
082        throws IOException
083    {
084        if ( input == null )
085        {
086            throw new IllegalArgumentException( "input stream missing" );
087        }
088
089        try
090        {
091            return read( ReaderFactory.newXmlReader( input ), isStrict( options ), getSource( options ) );
092        }
093        finally
094        {
095            IOUtil.close( input );
096        }
097    }
098
099    private boolean isStrict( Map<String, ?> options )
100    {
101        Object value = ( options != null ) ? options.get( IS_STRICT ) : null;
102        return value == null || Boolean.parseBoolean( value.toString() );
103    }
104
105    private InputSource getSource( Map<String, ?> options )
106    {
107        Object value = ( options != null ) ? options.get( INPUT_SOURCE ) : null;
108        return (InputSource) value;
109    }
110
111    private Model read( Reader reader, boolean strict, InputSource source )
112        throws IOException
113    {
114        try
115        {
116            if ( source != null )
117            {
118                return new MavenXpp3ReaderEx().read( reader, strict, source );
119            }
120            else
121            {
122                return new MavenXpp3Reader().read( reader, strict );
123            }
124        }
125        catch ( XmlPullParserException e )
126        {
127            throw new ModelParseException( e.getMessage(), e.getLineNumber(), e.getColumnNumber(), e );
128        }
129    }
130
131}