package tim.prune.function.srtm;
-import java.io.File;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.URL;
-import java.net.URLConnection;
import java.util.ArrayList;
import javax.swing.JOptionPane;
import tim.prune.GenericFunction;
import tim.prune.GpsPrune;
import tim.prune.I18nManager;
-import tim.prune.config.Config;
import tim.prune.data.DoubleRange;
import tim.prune.gui.ProgressDialog;
private ProgressDialog _progress = null;
/** Flag to check whether this function is currently running or not */
private boolean _running = false;
-
+ private SrtmSource _srtmSource = null;
/**
* Constructor
* @param inApp App object
*/
- public DownloadSrtmFunction(App inApp) {
+ public DownloadSrtmFunction(App inApp, SrtmSource inSrtmSource) {
super(inApp);
+ _srtmSource = inSrtmSource;
}
/** @return name key */
public String getNameKey() {
- return "function.downloadsrtm";
+ return "function.downloadsrtm."+_srtmSource.getName();
}
/**
*/
public void begin()
{
+ if (! SrtmDiskCache.ensureCacheIsUsable())
+ {
+ _app.showErrorMessage(getNameKey(), "error.downloadsrtm.nocache");
+ return;
+ }
+ if (! _srtmSource.isReadyToUse())
+ {
+ _app.showErrorMessage(getNameKey(), getNameKey() + ".needsetup");
+ return;
+ }
+
_running = true;
if (_progress == null) {
_progress = new ProgressDialog(_parentFrame, getNameKey());
* Run method using separate thread
*/
public void run()
+ {
+ ArrayList<SrtmTile> tileList = buildCoveringTiles();
+ downloadTiles(tileList);
+ // Finished
+ _running = false;
+ }
+
+ private ArrayList<SrtmTile> buildCoveringTiles()
{
// Compile list of tiles to get
ArrayList<SrtmTile> tileList = new ArrayList<SrtmTile>();
}
}
- downloadTiles(tileList);
- // Finished
- _running = false;
+ return tileList;
}
-
/**
* Download the tiles of SRTM data
* @param inTileList list of tiles to get
*/
private void downloadTiles(ArrayList<SrtmTile> inTileList)
{
+ String errorMessage = "";
// Update progress bar
if (_progress != null)
{
_progress.setValue(0);
}
- String errorMessage = null;
-
- // Check the cache is ok
- final String diskCachePath = Config.getConfigString(Config.KEY_DISK_CACHE);
- if (diskCachePath != null)
- {
- File srtmDir = new File(diskCachePath, "srtm");
- if (!srtmDir.exists() && !srtmDir.mkdir()) {
- // can't create the srtm directory
- errorMessage = I18nManager.getText("error.downloadsrtm.nocache");
- }
- }
- else {
- // no cache set up
- errorMessage = I18nManager.getText("error.downloadsrtm.nocache");
- }
-
- // Get urls for each tile
- URL[] urls = TileFinder.getUrls(inTileList);
int numDownloaded = 0;
for (int t=0; t<inTileList.size() && !_progress.isCancelled(); t++)
{
- if (urls[t] != null)
+ if (_srtmSource.isCached(inTileList.get(t)))
{
- // Define streams
- FileOutputStream outStream = null;
- InputStream inStream = null;
- try
+ System.out.println(inTileList.get(t).getTileName()+" already in cache, nothing to do");
+ continue;
+ }
+
+ boolean success;
+ try
+ {
+ success = _srtmSource.downloadTile(inTileList.get(t));
+ if (success)
{
- // Set progress
- _progress.setValue(t);
- // See if we've already got this tile or not
- File outputFile = getFileToWrite(urls[t]);
- if (outputFile != null)
- {
- // System.out.println("Download: Need to download: " + urls[t]);
- outStream = new FileOutputStream(outputFile);
- URLConnection conn = urls[t].openConnection();
- conn.setRequestProperty("User-Agent", "GpsPrune v" + GpsPrune.VERSION_NUMBER);
- inStream = conn.getInputStream();
- // Copy all the bytes to the file
- int c;
- while ((c = inStream.read()) != -1)
- {
- outStream.write(c);
- }
-
- numDownloaded++;
- }
- // else System.out.println("Don't need to download: " + urls[t].getFile());
- }
- catch (IOException ioe) {errorMessage = ioe.getClass().getName() + " - " + ioe.getMessage();
+ numDownloaded++;
}
- // Make sure streams are closed
- try {inStream.close();} catch (Exception e) {}
- try {outStream.close();} catch (Exception e) {}
+ // Set progress
+ _progress.setValue(t + 1);
+ }
+ catch (SrtmSourceException e)
+ {
+ errorMessage += e.getMessage();
}
}
return;
}
- if (errorMessage != null) {
+ if (! errorMessage.equals("")) {
_app.showErrorMessageNoLookup(getNameKey(), errorMessage);
+ return;
}
- else if (numDownloaded == 1)
+ if (numDownloaded == 1)
{
JOptionPane.showMessageDialog(_parentFrame, I18nManager.getTextWithNumber("confirm.downloadsrtm.1", numDownloaded),
I18nManager.getText(getNameKey()), JOptionPane.INFORMATION_MESSAGE);
I18nManager.getText(getNameKey()), JOptionPane.INFORMATION_MESSAGE);
}
else if (inTileList.size() > 0) {
- _app.showErrorMessage(getNameKey(), "confirm.downloadsrtm.none");
+ JOptionPane.showMessageDialog(_parentFrame, I18nManager.getText("confirm.downloadsrtm.none"));
}
}
-
- /**
- * See whether the SRTM file is already available locally
- * @param inUrl URL for online resource
- * @return file object to write to, or null if already there
- */
- private static File getFileToWrite(URL inUrl)
- {
- String diskCachePath = Config.getConfigString(Config.KEY_DISK_CACHE);
- if (diskCachePath != null)
- {
- File srtmDir = new File(diskCachePath, "srtm");
- if (srtmDir.exists() && srtmDir.isDirectory() && srtmDir.canRead())
- {
- File srtmFile = new File(srtmDir, new File(inUrl.getFile()).getName());
- if (!srtmFile.exists() || !srtmFile.canRead() || srtmFile.length() <= 400) {
- return srtmFile;
- }
- }
- }
- return null;
- }
-
- /**
- * @return true if a thread is currently running
- */
- public boolean isRunning()
- {
- return _running;
- }
}
projects / GpsPrune.git / blobdiff