| 1 | // License: GPL. For details, see LICENSE file.
|
|---|
| 2 | package org.openstreetmap.josm.io;
|
|---|
| 3 |
|
|---|
| 4 | import static org.openstreetmap.josm.tools.I18n.tr;
|
|---|
| 5 |
|
|---|
| 6 | import java.io.File;
|
|---|
| 7 | import java.io.FileNotFoundException;
|
|---|
| 8 | import java.io.FileOutputStream;
|
|---|
| 9 | import java.io.IOException;
|
|---|
| 10 | import java.io.OutputStream;
|
|---|
| 11 | import java.io.OutputStreamWriter;
|
|---|
| 12 | import java.io.PrintWriter;
|
|---|
| 13 | import java.io.Writer;
|
|---|
| 14 | import java.text.MessageFormat;
|
|---|
| 15 |
|
|---|
| 16 | import javax.swing.JOptionPane;
|
|---|
| 17 |
|
|---|
| 18 | import org.openstreetmap.josm.Main;
|
|---|
| 19 | import org.openstreetmap.josm.actions.ExtensionFileFilter;
|
|---|
| 20 | import org.openstreetmap.josm.gui.layer.Layer;
|
|---|
| 21 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
|
|---|
| 22 | import org.openstreetmap.josm.tools.Utils;
|
|---|
| 23 |
|
|---|
| 24 | public class OsmExporter extends FileExporter {
|
|---|
| 25 |
|
|---|
| 26 | public OsmExporter() {
|
|---|
| 27 | super(OsmImporter.FILE_FILTER);
|
|---|
| 28 | }
|
|---|
| 29 |
|
|---|
| 30 | public OsmExporter(ExtensionFileFilter filter) {
|
|---|
| 31 | super(filter);
|
|---|
| 32 | }
|
|---|
| 33 |
|
|---|
| 34 | @Override
|
|---|
| 35 | public boolean acceptFile(File pathname, Layer layer) {
|
|---|
| 36 | if (!(layer instanceof OsmDataLayer))
|
|---|
| 37 | return false;
|
|---|
| 38 | return super.acceptFile(pathname, layer);
|
|---|
| 39 | }
|
|---|
| 40 |
|
|---|
| 41 | @Override
|
|---|
| 42 | public void exportData(File file, Layer layer) throws IOException {
|
|---|
| 43 | exportData(file, layer, false);
|
|---|
| 44 | }
|
|---|
| 45 |
|
|---|
| 46 | public void exportData(File file, Layer layer, boolean noBackup) throws IOException {
|
|---|
| 47 | if (layer instanceof OsmDataLayer) {
|
|---|
| 48 | save(file, (OsmDataLayer) layer, noBackup);
|
|---|
| 49 | } else
|
|---|
| 50 | throw new IllegalArgumentException(MessageFormat.format("Expected instance of OsmDataLayer. Got ''{0}''.", layer
|
|---|
| 51 | .getClass().getName()));
|
|---|
| 52 | }
|
|---|
| 53 |
|
|---|
| 54 | protected OutputStream getOutputStream(File file) throws FileNotFoundException, IOException {
|
|---|
| 55 | return new FileOutputStream(file);
|
|---|
| 56 | }
|
|---|
| 57 |
|
|---|
| 58 | private void save(File file, OsmDataLayer layer, boolean noBackup) {
|
|---|
| 59 | File tmpFile = null;
|
|---|
| 60 | try {
|
|---|
| 61 | // use a tmp file because if something errors out in the
|
|---|
| 62 | // process of writing the file, we might just end up with
|
|---|
| 63 | // a truncated file. That can destroy lots of work.
|
|---|
| 64 | if (file.exists()) {
|
|---|
| 65 | tmpFile = new File(file.getPath() + "~");
|
|---|
| 66 | Utils.copyFile(file, tmpFile);
|
|---|
| 67 | }
|
|---|
| 68 |
|
|---|
| 69 | // create outputstream and wrap it with gzip or bzip, if necessary
|
|---|
| 70 | OutputStream out = getOutputStream(file);
|
|---|
| 71 | Writer writer = new OutputStreamWriter(out, "UTF-8");
|
|---|
| 72 |
|
|---|
| 73 | OsmWriter w = OsmWriterFactory.createOsmWriter(new PrintWriter(writer), false, layer.data.getVersion());
|
|---|
| 74 | layer.data.getReadLock().lock();
|
|---|
| 75 | try {
|
|---|
| 76 | w.writeLayer(layer);
|
|---|
| 77 | } finally {
|
|---|
| 78 | Utils.close(w);
|
|---|
| 79 | layer.data.getReadLock().unlock();
|
|---|
| 80 | }
|
|---|
| 81 | // FIXME - how to close?
|
|---|
| 82 | if (noBackup || !Main.pref.getBoolean("save.keepbackup", false)) {
|
|---|
| 83 | if (tmpFile != null) {
|
|---|
| 84 | tmpFile.delete();
|
|---|
| 85 | }
|
|---|
| 86 | }
|
|---|
| 87 | layer.onPostSaveToFile();
|
|---|
| 88 | } catch (IOException e) {
|
|---|
| 89 | e.printStackTrace();
|
|---|
| 90 | JOptionPane.showMessageDialog(
|
|---|
| 91 | Main.parent,
|
|---|
| 92 | tr("<html>An error occurred while saving.<br>Error is:<br>{0}</html>", e.getMessage()),
|
|---|
| 93 | tr("Error"),
|
|---|
| 94 | JOptionPane.ERROR_MESSAGE
|
|---|
| 95 | );
|
|---|
| 96 |
|
|---|
| 97 | try {
|
|---|
| 98 | // if the file save failed, then the tempfile will not
|
|---|
| 99 | // be deleted. So, restore the backup if we made one.
|
|---|
| 100 | if (tmpFile != null && tmpFile.exists()) {
|
|---|
| 101 | Utils.copyFile(tmpFile, file);
|
|---|
| 102 | }
|
|---|
| 103 | } catch (IOException e2) {
|
|---|
| 104 | e2.printStackTrace();
|
|---|
| 105 | JOptionPane.showMessageDialog(
|
|---|
| 106 | Main.parent,
|
|---|
| 107 | tr("<html>An error occurred while restoring backup file.<br>Error is:<br>{0}</html>", e2.getMessage()),
|
|---|
| 108 | tr("Error"),
|
|---|
| 109 | JOptionPane.ERROR_MESSAGE
|
|---|
| 110 | );
|
|---|
| 111 | }
|
|---|
| 112 | }
|
|---|
| 113 | }
|
|---|
| 114 | }
|
|---|
