// **********************************************************************
//
// <copyright>
//
// BBN Technologies
// 10 Moulton Street
// Cambridge, MA 02138
// (617) 873-8000
//
// Copyright (C) BBNT Solutions LLC. All rights reserved.
//
// </copyright>
// **********************************************************************
//
// $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/dataAccess/dted/DTEDLocator.java,v $
// $RCSfile: DTEDLocator.java,v $
// $Revision: 1.2.2.2 $
// $Date: 2005/08/04 18:11:17 $
// $Author: dietrick $
//
// **********************************************************************
package com.bbn.openmap.dataAccess.dted;
import java.io.*;
import java.util.*;
import com.bbn.openmap.io.FormatException;
import com.bbn.openmap.util.ArgParser;
import com.bbn.openmap.util.Debug;
import com.bbn.openmap.util.wanderer.Wanderer;
import com.bbn.openmap.util.wanderer.WandererCallback;
/**
* DTEDLocator finds DTED frame files, and organizes them by level,
* longitude and latitude.
* <P>
*
* <pre>
*
* Usage: java com.bbn.openmap.dataAccess.dted.DTEDLocator (dir path) ...
*
* </pre>
*/
public class DTEDLocator extends Wanderer implements WandererCallback {
boolean DEBUG = false;
protected DTEDNameTranslator translator;
protected LinkedList filenames = new LinkedList();
protected File[][][] files = null;
protected int numLevels = 3;
/**
* Create a DTEDLocator, expect to set the top level DTED
* directory later.
*/
public DTEDLocator() {
super();
if (Debug.debugging("dted")) {
DEBUG = true;
}
setCallback(this);
}
/**
* Create the DTEDLocator and start searching from the directory
* specificed.
*/
public DTEDLocator(String directory) {
this(new File(directory));
}
/**
* Create the DTEDLocator and start searching from the directory
* specificed.
*/
public DTEDLocator(File dtedDir) {
this();
handleEntry(dtedDir);
}
/**
* Initialize the holding arrays.
*/
protected void initFileHolder() {
files = new File[numLevels][180][360]; // level,lat, lon
}
/**
* Does nothing, nothing is done for directories.
*/
public void handleDirectory(File directory) {
if (DEBUG) {
Debug.output("DTEDLocator: skipping: "
+ directory.getAbsolutePath());
}
// Do nothing to directories
}
/**
* When a file is found, add it.
*/
public void handleFile(File file) {
if (DEBUG) {
Debug.output("DTEDLocator: searching finds: "
+ file.getAbsolutePath());
}
filenames.add(file);
}
/**
* Get the DTEDNameTranslator that knows how to interpret where a
* DTED file covers based on its name.
*/
public DTEDNameTranslator getTranslator() {
if (translator == null) {
translator = new StandardDTEDNameTranslator();
}
return translator;
}
/**
* Set the DTEDNameTranslator that knows how to interpret where a
* DTED file covers based on its name.
*/
public void setTranslator(DTEDNameTranslator dnt) {
translator = dnt;
}
/**
* After all the files have been located, organized them spatially
* in the 3D array.
*/
public void organize() {
if (DEBUG) {
Debug.output("DTEDLocator: organizing frames...");
}
initFileHolder();
Iterator it = filenames.iterator();
DTEDNameTranslator dnt = getTranslator();
while (it.hasNext()) {
File file = (File) it.next();
String filename = file.getAbsolutePath();
try {
dnt.set(filename);
int l = dnt.getLevel();
int lt = (int) (dnt.getLat() + 90);
int ln = (int) (dnt.getLon() + 180);
if (DEBUG) {
Debug.output(" placing " + filename + " at files[" + l
+ "][" + lt + "][" + ln + "]");
}
files[l][lt][ln] = file;
} catch (FormatException fe) {
continue;
} catch (ArrayIndexOutOfBoundsException aioobe) {
continue;
}
}
}
/**
* Get the File object for a latitude, longitude and level.
*/
public File get(float lat, float lon, int level) {
// Need to offset lat/lon to indexes.
try {
return files[level][(int) (lat + 90)][(int) (lon + 180)];
} catch (NullPointerException npe) {
organize();
return get(lat, lon, level);
} catch (ArrayIndexOutOfBoundsException aioobe) {
}
return null;
}
/**
* Given a set of files or directories, parade through them to
* find files that end with '`', or files that start with '.#',
* and delete them.
*
* @param argv paths to files or directories, use -h to get a
* usage statement.
*/
public static void main(String[] argv) {
Debug.init();
ArgParser ap = new ArgParser("DTEDLocator");
if (argv.length == 0) {
ap.bail("", true);
}
DTEDLocator locator = new DTEDLocator();
// Assume that the arguments are paths to directories or
// files.
for (int i = 0; i < argv.length; i++) {
locator.handleEntry(new File(argv[i]));
}
}
}