First commit of GPXrouteConverter for VfrFlight

.gitignore

@@ -1,23 +1,24 @@
-# Compiled class file
-*.class
-
-# Log file
-*.log
+#============================================================================
+# GPXrouteConverter for VfrFlight
+# Since       : 4/1/2020
+# Author      : Alberto Realis-Luc <[email protected]>
+# Web         : https://www.alus.it/airnavigator/gpx.php
+# Repository  : https://github.com/alus-it/GPXrouteConverter.git
+# Copyright   : (C) 2019-2020 Alberto Realis-Luc
+# License     : GNU GPL v3
+#
+# This source file is part of GPXrouteConverter project
+#============================================================================
 
-# BlueJ files
-*.ctxt
+# Ignore bin and build folders
+/bin/
 
-# Mobile Tools for Java (J2ME)
-.mtj.tmp/
+# Compiled Object files
+*.class
 
-# Package Files #
-*.jar
-*.war
-*.nar
-*.ear
-*.zip
-*.tar.gz
-*.rar
+# Ignore Eclipse project files
+.project
+.cproject
+.classpath
+.settings/*
 
-# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
-hs_err_pid*

src/it/alus/GPXrouteConverter/GPX.java

@@ -0,0 +1,135 @@
+//============================================================================
+// GPXrouteConverter for VfrFlight
+// Since       : 16/3/2019
+// Author      : Alberto Realis-Luc <[email protected]>
+// Web         : https://www.alus.it/airnavigator/gpx.php
+// Repository  : https://github.com/alus-it/GPXrouteConverter.git
+// Copyright   : (C) 2019-2020 Alberto Realis-Luc
+// License     : GNU GPL v3
+//
+// This source file is part of GPXrouteConverter project
+//============================================================================
+
+package it.alus.GPXrouteConverter;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStreamWriter;
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.List;
+import java.util.TimeZone;
+import javax.swing.JOptionPane;
+import javax.xml.parsers.DocumentBuilderFactory;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+
+public class GPX {
+
+	public static Boolean Read(final File inputFile, List<Waypoint> waypoints) {
+		try {
+			final Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(inputFile);
+			doc.getDocumentElement().normalize();
+			if (doc.getDocumentElement().getNodeName() != "gpx") {
+				JOptionPane.showMessageDialog(null, "Expected \"gpx\" as root element but not found it.","ERROR",JOptionPane.ERROR_MESSAGE);
+				return false;
+			}
+			NodeList nList = doc.getElementsByTagName("rtept");
+			for (int i = 0; i < nList.getLength(); i++) {
+				Node nNode = nList.item(i);
+				if (nNode.getNodeType() == Node.ELEMENT_NODE) {
+					Element eElement = (Element) nNode;
+					double lat = Double.parseDouble(eElement.getAttribute("lat"));
+					double lon = Double.parseDouble(eElement.getAttribute("lon"));
+					double alt = Double.parseDouble(eElement.getElementsByTagName("ele").item(0).getTextContent());
+					String name = eElement.getElementsByTagName("name").item(0).getTextContent();
+					waypoints.add(new Waypoint(lat,lon,alt,name));
+				}
+			}
+			return true;
+		} catch (Exception e) {
+			JOptionPane.showMessageDialog(null, "Exception caught while reading GPX file.","ERROR",JOptionPane.ERROR_MESSAGE);
+			e.printStackTrace();
+		}
+		return false;
+	}
+
+	public static Boolean Write(final String filename, final List<Waypoint> waypoints) {
+		if (waypoints.size() < 2) {
+			JOptionPane.showMessageDialog(null, "Found less than 2 waypoints.","ERROR",JOptionPane.ERROR_MESSAGE);
+			return false;
+		}
+		final File file = new File(filename);
+		if(file.exists() && !file.isDirectory() && JOptionPane.showConfirmDialog(null,
+				"The destination file: " + file.getName() + " already exists.\n" + 
+				"Do you want to overwrite it?",
+				"Warning", JOptionPane.YES_NO_OPTION) == JOptionPane.NO_OPTION) return false;
+		OutputStreamWriter gpx = null;
+		Boolean retVal = false;
+		try {
+			gpx = new OutputStreamWriter(new FileOutputStream(filename), "UTF-8");
+			gpx.write("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n" +
+					"<gpx\n" +
+					"version=\"1.1\"\n" +
+					" creator=\"VfrFlight GPX Converter - http://www.alus.it\"\n" +
+					" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n" +
+					" xmlns=\"http://www.topografix.com/GPX/1/1\"\n" +
+					" xsi:schemaLocation=\"http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd\">\n" +
+					"<metadata>\n");
+			final Date time = Calendar.getInstance().getTime();
+			SimpleDateFormat zuluFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
+			zuluFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
+			gpx.write("<time>" + zuluFormat.format(time) + "</time>\n");
+			Waypoint w = waypoints.get(0);
+			double minLat = w.getLat();
+			double maxLat = minLat;
+			double minLon = w.getLon();
+			double maxLon = minLon;
+			for (int i = 1; i < waypoints.size(); i++) {
+				w = waypoints.get(i);
+				if (minLat > w.getLat()) minLat = w.getLat();
+				if (maxLat < w.getLat()) maxLat = w.getLat();
+				if (minLon > w.getLon()) minLon = w.getLon();
+				if (maxLon < w.getLon()) maxLon = w.getLon();
+			}
+			gpx.write("<bounds minlat=\"" + minLat + "\" minlon=\"" + minLon + "\" maxlat=\"" + maxLat + "\" maxlon=\"" + maxLon + "\"/>\n" +
+					"</metadata>\n" +
+					"<rte>\n" +
+					" <name>" + file.getName() + "</name>\n" +
+					" <desc></desc>\n");
+			for (int i = 0; i < waypoints.size(); i++) {
+				w = waypoints.get(i);
+				gpx.write("<rtept lat=\"" + w.getLat() + "\" lon=\"" + w.getLon() + "\">\n");
+				gpx.write(" <ele>" + w.getRoundedAltMt() + "</ele>\n");
+				gpx.write(" <name>" + w.getName() + "</name>\n");
+				gpx.write(" <cmt></cmt>\n" + 
+						" <desc></desc>\n" + 
+						" <sym>" + ((i==0 || i == waypoints.size()-1) ? "Airport" : "Waypoint") + "</sym>\n" + 
+						"</rtept>\n");
+			}
+			gpx.write("</rte>\n" + 
+					"<extensions>\n" + 
+					"</extensions>\n" + 
+					"</gpx>\n");
+
+			retVal = true;
+		} catch (Exception e) {
+			JOptionPane.showMessageDialog(null, "Exception caught while writing GPX file.","ERROR",JOptionPane.ERROR_MESSAGE);
+			e.printStackTrace();
+		} finally {
+			try {
+				gpx.flush();
+				gpx.close();
+			} catch (IOException e) {
+				JOptionPane.showMessageDialog(null, "Exception caught while finalizing GPX file.","ERROR",JOptionPane.ERROR_MESSAGE);
+				e.printStackTrace();
+			}
+		}
+		return retVal;
+	}
+
+}

src/it/alus/GPXrouteConverter/Main.java

@@ -0,0 +1,60 @@
+//============================================================================
+// GPXrouteConverter for VfrFlight
+// Since       : 16/3/2019
+// Author      : Alberto Realis-Luc <[email protected]>
+// Web         : https://www.alus.it/airnavigator/gpx.php
+// Repository  : https://github.com/alus-it/GPXrouteConverter.git
+// Copyright   : (C) 2019-2020 Alberto Realis-Luc
+// License     : GNU GPL v3
+//
+// This source file is part of GPXrouteConverter project
+//============================================================================
+
+package it.alus.GPXrouteConverter;
+
+import java.io.File;
+import java.util.List;
+import java.util.Vector;
+import javax.swing.JFileChooser;
+import javax.swing.filechooser.FileNameExtensionFilter;
+
+public class Main {
+
+	public static void main(String[] args) {
+		JFileChooser fc = new JFileChooser();
+		fc.setDialogTitle("Select VfrFlight or GPX flightplan to convert");
+		fc.setMultiSelectionEnabled(true);
+		fc.setFileSelectionMode(JFileChooser.FILES_ONLY);
+		fc.setAcceptAllFileFilterUsed(false);
+		final FileNameExtensionFilter vfr = new FileNameExtensionFilter("VfrFlight flight plans", "vfr");
+		final FileNameExtensionFilter gpx = new FileNameExtensionFilter("GPX flight plans", "gpx");
+		fc.addChoosableFileFilter(vfr);
+		fc.addChoosableFileFilter(gpx);
+		final int returnVal = fc.showOpenDialog(null);
+		if (returnVal == JFileChooser.APPROVE_OPTION) {
+			final File[] files = fc.getSelectedFiles();
+			for (int i=0; i<files.length; i++) {
+				String filename = files[i].getPath();
+				System.out.println("Opening: " + filename);
+				filename = filename.substring(0, filename.lastIndexOf('.')); // remove extension
+				List<Waypoint> waypoints = new Vector<Waypoint>();
+				if (fc.getFileFilter().equals(vfr)) {
+					System.out.println("Selected VfrFlight flight plan, they will be converted to GPX routes.");
+					if (VfrFlight.Read(files[i],waypoints)) {
+						System.out.println("Read: " + files[i].getName() + " Waypoints: " + waypoints.size());
+						filename += ".gpx";
+						if (GPX.Write(filename, waypoints)) System.out.println("Succesfully converted to: " + filename);
+					}
+				} else {
+					System.out.println("Selected a GPX file, it will be converted to VfrFlight flight plan.");
+					if (GPX.Read(files[i], waypoints)) {
+						System.out.println("Read: " + files[i].getName() + " Waypoints: " + waypoints.size());
+						filename += ".vfr";
+						if (VfrFlight.Write(filename, waypoints)) System.out.println("Succesfully converted to: " + filename);
+					}
+				}
+			}
+		}
+	}
+
+}