001    // License: GPL. For details, see LICENSE file.
002    package org.openstreetmap.josm.io;
003    
004    import static org.openstreetmap.josm.tools.I18n.tr;
005    
006    import java.io.File;
007    import java.io.FileInputStream;
008    import java.io.FileNotFoundException;
009    import java.io.IOException;
010    import java.io.InputStream;
011    
012    import javax.swing.JOptionPane;
013    
014    import org.openstreetmap.josm.Main;
015    import org.openstreetmap.josm.actions.ExtensionFileFilter;
016    import org.openstreetmap.josm.data.osm.DataSet;
017    import org.openstreetmap.josm.gui.layer.OsmDataLayer;
018    import org.openstreetmap.josm.gui.progress.NullProgressMonitor;
019    import org.openstreetmap.josm.gui.progress.ProgressMonitor;
020    import org.openstreetmap.josm.gui.util.GuiHelper;
021    
022    public class OsmChangeImporter extends FileImporter {
023    
024        public static final ExtensionFileFilter FILE_FILTER = new ExtensionFileFilter(
025                "osc,osc.bz2,osc.bz,osc.gz", "osc", tr("OsmChange File") + " (*.osc *.osc.bz2 *.osc.bz *.osc.gz)");
026        
027        public OsmChangeImporter() {
028            super(FILE_FILTER);
029        }
030    
031        public OsmChangeImporter(ExtensionFileFilter filter) {
032            super(filter);
033        }
034    
035        @Override public void importData(File file, ProgressMonitor progressMonitor) throws IOException, IllegalDataException {
036            try {
037                FileInputStream in = new FileInputStream(file);
038                
039                if (file.getName().endsWith(".osc")) {
040                    importData(in, file);
041                } else if (file.getName().endsWith(".gz")) {
042                    importData(getGZipInputStream(in), file);
043                } else {
044                    importData(getBZip2InputStream(in), file);
045                }
046                
047            } catch (FileNotFoundException e) {
048                e.printStackTrace();
049                throw new IOException(tr("File ''{0}'' does not exist.", file.getName()));
050            }
051        }
052    
053        protected void importData(InputStream in, final File associatedFile) throws IllegalDataException {
054            final DataSet dataSet = OsmChangeReader.parseDataSet(in, NullProgressMonitor.INSTANCE);
055            final OsmDataLayer layer = new OsmDataLayer(dataSet, associatedFile.getName(), associatedFile);
056            addDataLayer(dataSet, layer, associatedFile.getPath()); 
057        }
058            
059        protected void addDataLayer(final DataSet dataSet, final OsmDataLayer layer, final String filePath) { 
060            // FIXME: remove UI stuff from IO subsystem
061            //
062            GuiHelper.runInEDT(new Runnable() {
063                @Override
064                public void run() {
065                    if (dataSet.allPrimitives().isEmpty()) {
066                        JOptionPane.showMessageDialog(
067                                Main.parent,
068                                tr("No data found in file {0}.", filePath),
069                                tr("Open OsmChange file"),
070                                JOptionPane.INFORMATION_MESSAGE);
071                    }
072                    Main.main.addLayer(layer);
073                    layer.onPostLoadFromFile();
074                }
075            });
076        }
077    }