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Viewing changes to com.bdaum.zoom.gps/src/com/bdaum/zoom/gps/internal/gpx/GpxParser.java

  • Committer: bdaum
  • Date: 2015-12-26 10:21:51 UTC
  • Revision ID: berthold.daum@bdaum.de-20151226102151-44f1j5113167thb9
Version 2.4.0

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com.bdaum.zoom.gps/src/com/bdaum/zoom/gps/internal/gpx/GpxParser.java
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import java.io.InputStream;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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import java.util.TimeZone;
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        private static final String RTEPT = "rtept"; //$NON-NLS-1$
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        private static final String WPT = "wpt"; //$NON-NLS-1$
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        private static final String TRKPT = "trkpt"; //$NON-NLS-1$
 
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        private static final String TRKSEG = "trkseg"; //$NON-NLS-1$
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        // private static final String GPXURI = "http://www.topografix.com/GPX/1/0"; //$NON-NLS-1$
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        private static final String LATITUDE = "lat"; //$NON-NLS-1$
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        private static final String LONGITUDE = "lon"; //$NON-NLS-1$
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        private static final SimpleDateFormat DF = new SimpleDateFormat(
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                        "yyyy-MM-dd'T'HH:mm:s"); //$NON-NLS-1$
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        static  {
 
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        static {
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                DF.setTimeZone(TimeZone.getTimeZone("UTC")); //$NON-NLS-1$
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        }
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        /*
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         * (non-Javadoc)
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         * 
 
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         *
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         * @see com.bdaum.zoom.gps.gpx.IGpsParser#parse(InputStream in)
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         */
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        public Trackpoint[] parse(InputStream in) throws IOException,
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                        ParseException {
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                final List<Trackpoint> points = new ArrayList<Trackpoint>(250);
 
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        public void parse(InputStream in, final List<Trackpoint> points)
 
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                        throws IOException, ParseException {
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                try {
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                        SAXParserFactory factory = SAXParserFactory.newInstance();
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                        DefaultHandler handler = new DefaultHandler() {
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                                private Trackpoint trkpnt;
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                                private StringBuilder text = new StringBuilder();
 
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                                private int segment = -1;
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                                @Override
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                                public void startElement(String namespaceURI, String localName,
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                                                String qName, Attributes atts) throws SAXException {
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                                        if (TRKPT.equals(qName) || WPT.equals(qName)
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                                                        || RTEPT.equals(qName)) {
 
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                                        if (TRKSEG.equals(qName))
 
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                                                segment = 0;
 
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                                        else if (TRKPT.equals(qName)) {
 
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                                                if (segment >= 0)
 
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                                                        ++segment;
 
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                                                trkpnt = new Trackpoint(
 
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                                                                parseDouble(atts.getValue("", LATITUDE)), //$NON-NLS-1$
 
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                                                                parseDouble(atts.getValue("", LONGITUDE)), false); //$NON-NLS-1$
 
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                                        } else if (WPT.equals(qName) || RTEPT.equals(qName)) {
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                                                trkpnt = new Trackpoint(parseDouble(atts.getValue(
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                                                                "", LATITUDE)), //$NON-NLS-1$
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                                                                parseDouble(atts.getValue("", LONGITUDE))); //$NON-NLS-1$
 
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                                                                parseDouble(atts.getValue("", LONGITUDE)), true); //$NON-NLS-1$
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                                        }
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                                        text.setLength(0);
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                                }
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                                @Override
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                                public void endElement(String uri, String localName,
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                                                String qName) throws SAXException {
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                                        if (TRKPT.equals(qName) || WPT.equals(qName)
 
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                                        if (TRKSEG.equals(qName)) {
 
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                                                if (segment > 0)
 
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                                                        points.get(points.size() - 1).setSegmentEnd(true);
 
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                                                segment = -1;
 
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                                        } else if (TRKPT.equals(qName) || WPT.equals(qName)
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                                                        || RTEPT.equals(qName)) {
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                                                if (trkpnt != null) {
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                                                        if (trkpnt.getTime() >= 0)
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                                                                points.add(trkpnt);
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                                                        trkpnt = null;
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                                                }
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                                        } else if (trkpnt != null
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                                                        && (TIM.equals(qName) || ELE.equals(qName) || SPED
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                                                                        .equals(qName))) {
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                                                String s = text.toString();
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                                                if (TIM.equals(qName))
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                                                        trkpnt.setTime(text2date(s).getTime());
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                                                else if (SPED.equals(qName))
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                                                        trkpnt.setSpeed(parseDouble(s));
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                                                else if (ELE.equals(qName))
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                                                        trkpnt.setAltitude(parseDouble(s));
 
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                                        } else if (trkpnt != null) {
 
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                                                int p = qName.indexOf(':');
 
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                                                String tagName = p < 0 ? qName : qName.substring(p + 1)
 
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                                                                .trim();
 
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                                                if (TIM.equals(tagName) || ELE.equals(tagName)
 
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                                                                || SPED.equals(tagName)) {
 
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                                                        String s = text.toString();
 
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                                                        if (TIM.equals(tagName))
 
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                                                                trkpnt.setTime(text2date(s).getTime());
 
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                                                        else if (SPED.equals(tagName))
 
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                                                                trkpnt.setSpeed(parseDouble(s));
 
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                                                        else if (ELE.equals(tagName))
 
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                                                                trkpnt.setAltitude(parseDouble(s));
 
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                                                }
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                                        }
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                                }
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                        };
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                } catch (SAXException e) {
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                        throw new IOException(e.toString());
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                }
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                return points.toArray(new Trackpoint[points.size()]);
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        }
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        private double parseDouble(String text) throws SAXException {