| 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.FileInputStream;
|
|---|
| 8 | import java.io.FileNotFoundException;
|
|---|
| 9 | import java.io.FileOutputStream;
|
|---|
| 10 | import java.io.IOException;
|
|---|
| 11 | import java.io.OutputStream;
|
|---|
| 12 | import java.io.OutputStreamWriter;
|
|---|
| 13 | import java.io.PrintWriter;
|
|---|
| 14 | import java.io.Writer;
|
|---|
| 15 | import java.text.MessageFormat;
|
|---|
| 16 |
|
|---|
| 17 | import javax.swing.JOptionPane;
|
|---|
| 18 |
|
|---|
| 19 | import org.openstreetmap.josm.Main;
|
|---|
| 20 | import org.openstreetmap.josm.actions.ExtensionFileFilter;
|
|---|
| 21 | import org.openstreetmap.josm.gui.layer.Layer;
|
|---|
| 22 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
|
|---|
| 23 |
|
|---|
| 24 | public class OsmExporter extends FileExporter {
|
|---|
| 25 |
|
|---|
| 26 | public OsmExporter() {
|
|---|
| 27 | super(new ExtensionFileFilter("osm,xml", "osm", tr("OSM Server Files") + " (*.osm *.xml)"));
|
|---|
| 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 | if (layer instanceof OsmDataLayer) {
|
|---|
| 44 | save(file, (OsmDataLayer) layer);
|
|---|
| 45 | } else
|
|---|
| 46 | throw new IllegalArgumentException(MessageFormat.format("Expected instance of OsmDataLayer. Got ''{0}''.", layer
|
|---|
| 47 | .getClass().getName()));
|
|---|
| 48 | }
|
|---|
| 49 |
|
|---|
| 50 | protected OutputStream getOutputStream(File file) throws FileNotFoundException, IOException {
|
|---|
| 51 | return new FileOutputStream(file);
|
|---|
| 52 | }
|
|---|
| 53 |
|
|---|
| 54 | private void save(File file, OsmDataLayer layer) {
|
|---|
| 55 | File tmpFile = null;
|
|---|
| 56 | try {
|
|---|
| 57 | // use a tmp file because if something errors out in the
|
|---|
| 58 | // process of writing the file, we might just end up with
|
|---|
| 59 | // a truncated file. That can destroy lots of work.
|
|---|
| 60 | if (file.exists()) {
|
|---|
| 61 | tmpFile = new File(file.getPath() + "~");
|
|---|
| 62 | copy(file, tmpFile);
|
|---|
| 63 | }
|
|---|
| 64 |
|
|---|
| 65 | // create outputstream and wrap it with gzip or bzip, if necessary
|
|---|
| 66 | OutputStream out = getOutputStream(file);
|
|---|
| 67 | Writer writer = new OutputStreamWriter(out, "UTF-8");
|
|---|
| 68 |
|
|---|
| 69 | OsmWriter w = new OsmWriter(new PrintWriter(writer), false, layer.data.getVersion());
|
|---|
| 70 | layer.data.getReadLock().lock();
|
|---|
| 71 | try {
|
|---|
| 72 | w.header();
|
|---|
| 73 | w.writeDataSources(layer.data);
|
|---|
| 74 | w.writeContent(layer.data);
|
|---|
| 75 | w.footer();
|
|---|
| 76 | w.close();
|
|---|
| 77 | } finally {
|
|---|
| 78 | layer.data.getReadLock().unlock();
|
|---|
| 79 | }
|
|---|
| 80 | // FIXME - how to close?
|
|---|
| 81 | if (!Main.pref.getBoolean("save.keepbackup", false) && (tmpFile != null)) {
|
|---|
| 82 | tmpFile.delete();
|
|---|
| 83 | }
|
|---|
| 84 | layer.onPostSaveToFile();
|
|---|
| 85 | } catch (IOException e) {
|
|---|
| 86 | e.printStackTrace();
|
|---|
| 87 | JOptionPane.showMessageDialog(
|
|---|
| 88 | Main.parent,
|
|---|
| 89 | tr("<html>An error occurred while saving.<br>Error is:<br>{0}</html>", e.getMessage()),
|
|---|
| 90 | tr("Error"),
|
|---|
| 91 | JOptionPane.ERROR_MESSAGE
|
|---|
| 92 | );
|
|---|
| 93 |
|
|---|
| 94 | try {
|
|---|
| 95 | // if the file save failed, then the tempfile will not
|
|---|
| 96 | // be deleted. So, restore the backup if we made one.
|
|---|
| 97 | if (tmpFile != null && tmpFile.exists()) {
|
|---|
| 98 | copy(tmpFile, file);
|
|---|
| 99 | }
|
|---|
| 100 | } catch (IOException e2) {
|
|---|
| 101 | e2.printStackTrace();
|
|---|
| 102 | JOptionPane.showMessageDialog(
|
|---|
| 103 | Main.parent,
|
|---|
| 104 | tr("<html>An error occurred while restoring backup file.<br>Error is:<br>{0}</html>", e2.getMessage()),
|
|---|
| 105 | tr("Error"),
|
|---|
| 106 | JOptionPane.ERROR_MESSAGE
|
|---|
| 107 | );
|
|---|
| 108 | }
|
|---|
| 109 | }
|
|---|
| 110 | }
|
|---|
| 111 |
|
|---|
| 112 | private void copy(File src, File dst) throws IOException {
|
|---|
| 113 | FileInputStream srcStream;
|
|---|
| 114 | FileOutputStream dstStream;
|
|---|
| 115 | try {
|
|---|
| 116 | srcStream = new FileInputStream(src);
|
|---|
| 117 | dstStream = new FileOutputStream(dst);
|
|---|
| 118 | } catch (FileNotFoundException e) {
|
|---|
| 119 | JOptionPane.showMessageDialog(Main.parent, tr("Could not back up file. Exception is: {0}", e
|
|---|
| 120 | .getMessage()), tr("Error"), JOptionPane.ERROR_MESSAGE);
|
|---|
| 121 | return;
|
|---|
| 122 | }
|
|---|
| 123 | byte buf[] = new byte[1 << 16];
|
|---|
| 124 | int len;
|
|---|
| 125 | while ((len = srcStream.read(buf)) != -1) {
|
|---|
| 126 | dstStream.write(buf, 0, len);
|
|---|
| 127 | }
|
|---|
| 128 | srcStream.close();
|
|---|
| 129 | dstStream.close();
|
|---|
| 130 | }
|
|---|
| 131 |
|
|---|
| 132 | }
|
|---|
