+++ /dev/null
-package tim.prune.load.xml;
-
-import java.util.ArrayList;
-
-import org.xml.sax.Attributes;
-import org.xml.sax.SAXException;
-
-import tim.prune.data.Field;
-import tim.prune.load.TrackNameList;
-
-
-/**
- * Class for handling specifics of parsing Gpx files
- */
-public class GpxHandler extends XmlHandler
-{
- private boolean _insidePoint = false;
- private boolean _insideWaypoint = false;
- private boolean _startSegment = true;
- private boolean _isTrackPoint = false;
- private int _trackNum = -1;
- private GpxTag _fileTitle = new GpxTag();
- private GpxTag _pointName = new GpxTag(), _trackName = new GpxTag();
- private String _latitude = null, _longitude = null;
- private GpxTag _elevation = new GpxTag(), _time = new GpxTag();
- private GpxTag _type = new GpxTag(), _description = new GpxTag();
- private GpxTag _link = new GpxTag();
- private GpxTag _currentTag = null;
- private ArrayList<String[]> _pointList = new ArrayList<String[]>();
- private ArrayList<String> _linkList = new ArrayList<String>();
- private TrackNameList _trackNameList = new TrackNameList();
-
-
- /**
- * Receive the start of a tag
- * @see org.xml.sax.ContentHandler#startElement(java.lang.String, java.lang.String, java.lang.String, org.xml.sax.Attributes)
- */
- public void startElement(String uri, String localName, String qName,
- Attributes attributes) throws SAXException
- {
- // Read the parameters for waypoints and track points
- String tag = qName.toLowerCase();
- if (tag.equals("wpt") || tag.equals("trkpt") || tag.equals("rtept"))
- {
- _insidePoint = true;
- _insideWaypoint = tag.equals("wpt");
- _isTrackPoint = tag.equals("trkpt");
- final int numAttributes = attributes.getLength();
- for (int i=0; i<numAttributes; i++)
- {
- String att = attributes.getQName(i).toLowerCase();
- if (att.equals("lat")) {_latitude = attributes.getValue(i);}
- else if (att.equals("lon")) {_longitude = attributes.getValue(i);}
- }
- _elevation.setValue(null);
- _pointName.setValue(null);
- _time.setValue(null);
- _type.setValue(null);
- _link.setValue(null);
- _description.setValue(null);
- }
- else if (tag.equals("ele")) {
- _currentTag = _elevation;
- }
- else if (tag.equals("name"))
- {
- if (_insidePoint) {
- _currentTag = _pointName;
- }
- else if (_trackNum < 0)
- {
- _currentTag = _fileTitle;
- }
- else {
- _currentTag = _trackName;
- }
- }
- else if (tag.equals("time")) {
- _currentTag = _time;
- }
- else if (tag.equals("type")) {
- _currentTag = _type;
- }
- else if (tag.equals("description") || tag.equals("desc")) {
- _currentTag = _description;
- }
- else if (tag.equals("link")) {
- _link.setValue(attributes.getValue("href"));
- }
- else if (tag.equals("trkseg")) {
- _startSegment = true;
- }
- else if (tag.equals("trk"))
- {
- _trackNum++;
- _trackName.setValue(null);
- }
- super.startElement(uri, localName, qName, attributes);
- }
-
-
- /**
- * Process end tag
- * @see org.xml.sax.ContentHandler#endElement(java.lang.String, java.lang.String, java.lang.String)
- */
- public void endElement(String uri, String localName, String qName)
- throws SAXException
- {
- String tag = qName.toLowerCase();
- if (tag.equals("wpt") || tag.equals("trkpt") || tag.equals("rtept"))
- {
- processPoint();
- _insidePoint = false;
- }
- else {
- _currentTag = null;
- }
- super.endElement(uri, localName, qName);
- }
-
-
- /**
- * Process character text (inside tags or between them)
- * @see org.xml.sax.ContentHandler#characters(char[], int, int)
- */
- public void characters(char[] ch, int start, int length)
- throws SAXException
- {
- String value = new String(ch, start, length);
- if (_currentTag != null) {
- _currentTag.setValue(checkCharacters(_currentTag.getValue(), value));
- }
- super.characters(ch, start, length);
- }
-
-
- /**
- * Check to concatenate partially-received values, if necessary
- * @param inVariable variable containing characters received until now
- * @param inValue new value received
- * @return concatenation
- */
- private static String checkCharacters(String inVariable, String inValue)
- {
- if (inVariable == null) {return inValue;}
- return inVariable + inValue;
- }
-
-
- /**
- * Process a point, either a waypoint or track point
- */
- private void processPoint()
- {
- // Put the values into a String array matching the order in getFieldArray()
- String[] values = new String[8];
- values[0] = _latitude;
- values[1] = _longitude;
- values[2] = _elevation.getValue();
- if (_insideWaypoint) {values[3] = _pointName.getValue();}
- values[4] = _time.getValue();
- if (_startSegment && !_insideWaypoint)
- {
- values[5] = "1";
- _startSegment = false;
- }
- values[6] = _type.getValue();
- values[7] = _description.getValue();
- _pointList.add(values);
- _trackNameList.addPoint(_trackNum, _trackName.getValue(), _isTrackPoint);
- _linkList.add(_link.getValue());
- }
-
-
- /**
- * @see tim.prune.load.xml.XmlHandler#getFieldArray()
- */
- public Field[] getFieldArray()
- {
- final Field[] fields = {Field.LATITUDE, Field.LONGITUDE, Field.ALTITUDE,
- Field.WAYPT_NAME, Field.TIMESTAMP, Field.NEW_SEGMENT,
- Field.WAYPT_TYPE, Field.DESCRIPTION};
- return fields;
- }
-
-
- /**
- * Return the parsed information as a 2d array
- * @see tim.prune.load.xml.XmlHandler#getDataArray()
- */
- public String[][] getDataArray()
- {
- int numPoints = _pointList.size();
- // construct data array
- String[][] result = new String[numPoints][];
- for (int i=0; i<numPoints; i++)
- {
- result[i] = _pointList.get(i);
- }
- return result;
- }
-
- /**
- * @return array of links, or null if none
- */
- public String[] getLinkArray()
- {
- int numPoints = _linkList.size();
- boolean hasLink = false;
- String[] result = new String[numPoints];
- for (int i=0; i<numPoints; i++)
- {
- result[i] = _linkList.get(i);
- if (result[i] != null) {hasLink = true;}
- }
- if (!hasLink) {result = null;}
- return result;
- }
-
- /**
- * @return track name list
- */
- public TrackNameList getTrackNameList() {
- return _trackNameList;
- }
-
- /**
- * @return file title
- */
- public String getFileTitle() {
- return _fileTitle.getValue();
- }
-}
projects / GpsPrune.git / blobdiff