// ---------------------------------------------------------------------------- // Copyright 2007-2012, GeoTelematic Solutions, Inc. // All rights reserved // ---------------------------------------------------------------------------- // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. // // ---------------------------------------------------------------------------- // Change History: // 2010/07/18 Martin D. Flynn // -Initial release // ---------------------------------------------------------------------------- package org.opengts.db; import java.util.*; import java.io.*; import java.awt.*; import javax.xml.parsers.*; import org.w3c.dom.*; import org.xml.sax.*; import org.opengts.db.*; import org.opengts.util.*; /** *** Parse XML location formats supported by Google (currently only GPX) **/ public class ParseEventsXML implements ParseEvent.ParseEventHandler { // ------------------------------------------------------------------------ // GPX tags private static final String TAG_gpx = "gpx"; // top level tag private static final String TAG_name = "name"; // gpx name private static final String TAG_desc = "desc"; // gpx description private static final String TAG_number = "number"; // gpx number private static final String TAG_trk = "trk"; // a 'track' containing segments private static final String TAG_trkseg = "trkseg"; // a 'track' segment containing points private static final String TAG_trkpt = "trkpt"; // a 'track' point private static final String TAG_ele = "ele"; // a point altitude private static final String TAG_time = "time"; // a point time [2010-07-11T23:44:12Z] private static final String ATTR_version = "version"; // version private static final String ATTR_creator = "creator"; // creator private static final String ATTR_lat = "lat"; // latitude private static final String ATTR_lon = "lon"; // longitude // ------------------------------------------------------------------------ // KML tags // ------------------------------------------------------------------------ // ------------------------------------------------------------------------ /** *** Constructor **/ public ParseEventsXML() { super(); } // ------------------------------------------------------------------------ public boolean parseStream(InputStream xmlStream, GeoEvent.GeoEventHandler gevHandler) throws IOException { /* get Document */ Document xmlDoc = XMLTools.getDocument(xmlStream, false/*checkErrors*/); if (xmlDoc == null) { // errors already displayed return false; } /* get top-level tag */ Element topElem = xmlDoc.getDocumentElement(); String topLevelTagName = topElem.getTagName(); /* GPS */ if (topElem.getTagName().equalsIgnoreCase(TAG_gpx)) { return this._parse_gpx(topElem, gevHandler); } /* not supported */ Print.logError("XML format not supported: " + topLevelTagName); return false; } // ------------------------------------------------------------------------ public boolean _parse_gpx(Element topElem, GeoEvent.GeoEventHandler gevHandler) { /* top level attributes */ String version = XMLTools.getAttribute(topElem, ATTR_version, ""); String creator = XMLTools.getAttribute(topElem, ATTR_creator, ""); /* tracks */ NodeList trkNodes = XMLTools.getChildElements(topElem, TAG_trk); for (int trk = 0; trk < trkNodes.getLength(); trk++) { Element trkTag = (Element)trkNodes.item(trk); /* name */ Element nameTag = XMLTools.getChildElement(trkTag, TAG_name); String name = (nameTag != null)? XMLTools.getNodeText(nameTag,""/*repNewline*/) : ""; Print.logInfo("Track Name: " + name); /* description */ Element descTag = XMLTools.getChildElement(trkTag, TAG_desc); String desc = (descTag != null)? XMLTools.getNodeText(descTag,""/*repNewline*/) : ""; Print.logInfo("Track Descrption: " + desc); /* number */ Element numberTag = XMLTools.getChildElement(trkTag, TAG_number); int number = (numberTag != null)? StringTools.parseInt(XMLTools.getNodeText(numberTag,""),0) : 0; Print.logInfo("Track Number: " + number); /* track segments */ NodeList trksegNodes = XMLTools.getChildElements(trkTag, TAG_trkseg); for (int seg = 0; seg < trksegNodes.getLength(); seg++) { Print.logInfo("Parsing Track Segment ..."); Element trksegTag = (Element)trksegNodes.item(seg); NodeList trkptNodes = XMLTools.getChildElements(trksegTag, TAG_trkpt); for (int pt = 0; pt < trkptNodes.getLength(); pt++) { Element trkptTag = (Element)trkptNodes.item(pt); double latitude = XMLTools.getAttributeDouble(trkptTag, ATTR_lat, 0.0); double longitude = XMLTools.getAttributeDouble(trkptTag, ATTR_lon, 0.0); Element eleTag = XMLTools.getChildElement(trkptTag, TAG_ele); double altitudeM = (eleTag != null)? StringTools.parseDouble(XMLTools.getNodeText(eleTag,""),0.0) : 0.0; Element timeTag = XMLTools.getChildElement(trkptTag, TAG_time); long timestamp = (timeTag != null)? this._parseTime(XMLTools.getNodeText(timeTag,"")) : 0L; this._handleEvent(gevHandler, timestamp, StatusCodes.STATUS_LOCATION, latitude, longitude, altitudeM ); } } } return true; } // ------------------------------------------------------------------------ protected long _parseTime(String timeStr) { // "2010-07-11T23:44:12Z" try { DateTime dt = DateTime.parseArgumentDate(timeStr); return dt.getTimeSec(); } catch (DateTime.DateParseException dpe) { Print.logError("Date/Time parsing format error: " + timeStr); return 0L; } } // ------------------------------------------------------------------------ protected void _handleEvent(GeoEvent.GeoEventHandler gevHandler, long timestamp, int statusCode, double latitude, double longitude, double altitudeM) { if (gevHandler != null) { GeoEvent gev = new GeoEvent(); //gev.setAccountID(this.accountID); //gev.setDeviceID(this.deviceID); gev.setTimestamp(timestamp); gev.setStatusCode(statusCode); gev.setLatitude(latitude); gev.setLongitude(longitude); gev.setAltitudeMeters(altitudeM); gevHandler.handleGeoEvent(gev); } else { StringBuffer sb = new StringBuffer(); sb.append("[" + new DateTime(timestamp) + "] "); sb.append(StringTools.format(latitude,"0.00000")); sb.append("/"); sb.append(StringTools.format(longitude,"0.00000")); sb.append(" "); sb.append(StringTools.format(altitudeM,"0") + " m"); Print.logInfo("Point: " + sb); } } // ------------------------------------------------------------------------ // ------------------------------------------------------------------------ public static void main(String args[]) { RTConfig.setCommandLineArgs(args); File xmlFile = RTConfig.getFile("file",null); if (xmlFile == null) { Print.sysPrintln("Missing '-file' specification"); System.exit(1); } FileInputStream fis = null; try { fis = new FileInputStream(xmlFile); ParseEventsXML pgx = new ParseEventsXML(); pgx.parseStream(fis, null); } catch (IOException ioe) { Print.logException("IO Error", ioe); } finally { if (fis != null) { try { fis.close(); } catch (Throwable th) {} } } } }