diff options
Diffstat (limited to 'ddms/libs/ddmuilib/src/com/android/ddmuilib/location/GpxParser.java')
| -rw-r--r-- | ddms/libs/ddmuilib/src/com/android/ddmuilib/location/GpxParser.java | 373 |
1 files changed, 0 insertions, 373 deletions
diff --git a/ddms/libs/ddmuilib/src/com/android/ddmuilib/location/GpxParser.java b/ddms/libs/ddmuilib/src/com/android/ddmuilib/location/GpxParser.java deleted file mode 100644 index a30337a..0000000 --- a/ddms/libs/ddmuilib/src/com/android/ddmuilib/location/GpxParser.java +++ /dev/null @@ -1,373 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * - * 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. - */ - -package com.android.ddmuilib.location; - -import org.xml.sax.Attributes; -import org.xml.sax.InputSource; -import org.xml.sax.SAXException; -import org.xml.sax.SAXParseException; -import org.xml.sax.helpers.DefaultHandler; - -import java.io.FileReader; -import java.io.IOException; -import java.util.ArrayList; -import java.util.Calendar; -import java.util.List; -import java.util.TimeZone; -import java.util.regex.Matcher; -import java.util.regex.Pattern; - -import javax.xml.parsers.ParserConfigurationException; -import javax.xml.parsers.SAXParser; -import javax.xml.parsers.SAXParserFactory; - -/** - * A very basic GPX parser to meet the need of the emulator control panel. - * <p/> - * It parses basic waypoint information, and tracks (merging segments). - */ -public class GpxParser { - - private final static String NS_GPX = "http://www.topografix.com/GPX/1/1"; //$NON-NLS-1$ - - private final static String NODE_WAYPOINT = "wpt"; //$NON-NLS-1$ - private final static String NODE_TRACK = "trk"; //$NON-NLS-1$ - private final static String NODE_TRACK_SEGMENT = "trkseg"; //$NON-NLS-1$ - private final static String NODE_TRACK_POINT = "trkpt"; //$NON-NLS-1$ - private final static String NODE_NAME = "name"; //$NON-NLS-1$ - private final static String NODE_TIME = "time"; //$NON-NLS-1$ - private final static String NODE_ELEVATION = "ele"; //$NON-NLS-1$ - private final static String NODE_DESCRIPTION = "desc"; //$NON-NLS-1$ - private final static String ATTR_LONGITUDE = "lon"; //$NON-NLS-1$ - private final static String ATTR_LATITUDE = "lat"; //$NON-NLS-1$ - - private static SAXParserFactory sParserFactory; - - static { - sParserFactory = SAXParserFactory.newInstance(); - sParserFactory.setNamespaceAware(true); - } - - private String mFileName; - - private GpxHandler mHandler; - - /** Pattern to parse time with optional sub-second precision, and optional - * Z indicating the time is in UTC. */ - private final static Pattern ISO8601_TIME = - Pattern.compile("(\\d{4})-(\\d\\d)-(\\d\\d)T(\\d\\d):(\\d\\d):(\\d\\d)(?:(\\.\\d+))?(Z)?"); //$NON-NLS-1$ - - /** - * Handler for the SAX parser. - */ - private static class GpxHandler extends DefaultHandler { - // --------- parsed data --------- - List<WayPoint> mWayPoints; - List<Track> mTrackList; - - // --------- state for parsing --------- - Track mCurrentTrack; - TrackPoint mCurrentTrackPoint; - WayPoint mCurrentWayPoint; - final StringBuilder mStringAccumulator = new StringBuilder(); - - boolean mSuccess = true; - - @Override - public void startElement(String uri, String localName, String name, Attributes attributes) - throws SAXException { - // we only care about the standard GPX nodes. - try { - if (NS_GPX.equals(uri)) { - if (NODE_WAYPOINT.equals(localName)) { - if (mWayPoints == null) { - mWayPoints = new ArrayList<WayPoint>(); - } - - mWayPoints.add(mCurrentWayPoint = new WayPoint()); - handleLocation(mCurrentWayPoint, attributes); - } else if (NODE_TRACK.equals(localName)) { - if (mTrackList == null) { - mTrackList = new ArrayList<Track>(); - } - - mTrackList.add(mCurrentTrack = new Track()); - } else if (NODE_TRACK_SEGMENT.equals(localName)) { - // for now we do nothing here. This will merge all the segments into - // a single TrackPoint list in the Track. - } else if (NODE_TRACK_POINT.equals(localName)) { - if (mCurrentTrack != null) { - mCurrentTrack.addPoint(mCurrentTrackPoint = new TrackPoint()); - handleLocation(mCurrentTrackPoint, attributes); - } - } - } - } finally { - // no matter the node, we empty the StringBuilder accumulator when we start - // a new node. - mStringAccumulator.setLength(0); - } - } - - /** - * Processes new characters for the node content. The characters are simply stored, - * and will be processed when {@link #endElement(String, String, String)} is called. - */ - @Override - public void characters(char[] ch, int start, int length) throws SAXException { - mStringAccumulator.append(ch, start, length); - } - - @Override - public void endElement(String uri, String localName, String name) throws SAXException { - if (NS_GPX.equals(uri)) { - if (NODE_WAYPOINT.equals(localName)) { - mCurrentWayPoint = null; - } else if (NODE_TRACK.equals(localName)) { - mCurrentTrack = null; - } else if (NODE_TRACK_POINT.equals(localName)) { - mCurrentTrackPoint = null; - } else if (NODE_NAME.equals(localName)) { - if (mCurrentTrack != null) { - mCurrentTrack.setName(mStringAccumulator.toString()); - } else if (mCurrentWayPoint != null) { - mCurrentWayPoint.setName(mStringAccumulator.toString()); - } - } else if (NODE_TIME.equals(localName)) { - if (mCurrentTrackPoint != null) { - mCurrentTrackPoint.setTime(computeTime(mStringAccumulator.toString())); - } - } else if (NODE_ELEVATION.equals(localName)) { - if (mCurrentTrackPoint != null) { - mCurrentTrackPoint.setElevation( - Double.parseDouble(mStringAccumulator.toString())); - } else if (mCurrentWayPoint != null) { - mCurrentWayPoint.setElevation( - Double.parseDouble(mStringAccumulator.toString())); - } - } else if (NODE_DESCRIPTION.equals(localName)) { - if (mCurrentWayPoint != null) { - mCurrentWayPoint.setDescription(mStringAccumulator.toString()); - } - } - } - } - - @Override - public void error(SAXParseException e) throws SAXException { - mSuccess = false; - } - - @Override - public void fatalError(SAXParseException e) throws SAXException { - mSuccess = false; - } - - /** - * Converts the string description of the time into milliseconds since epoch. - * @param timeString the string data. - * @return date in milliseconds. - */ - private long computeTime(String timeString) { - // Time looks like: 2008-04-05T19:24:50Z - Matcher m = ISO8601_TIME.matcher(timeString); - if (m.matches()) { - // get the various elements and reconstruct time as a long. - try { - int year = Integer.parseInt(m.group(1)); - int month = Integer.parseInt(m.group(2)); - int date = Integer.parseInt(m.group(3)); - int hourOfDay = Integer.parseInt(m.group(4)); - int minute = Integer.parseInt(m.group(5)); - int second = Integer.parseInt(m.group(6)); - - // handle the optional parameters. - int milliseconds = 0; - - String subSecondGroup = m.group(7); - if (subSecondGroup != null) { - milliseconds = (int)(1000 * Double.parseDouble(subSecondGroup)); - } - - boolean utcTime = m.group(8) != null; - - // now we convert into milliseconds since epoch. - Calendar c; - if (utcTime) { - c = Calendar.getInstance(TimeZone.getTimeZone("GMT")); //$NON-NLS-1$ - } else { - c = Calendar.getInstance(); - } - - c.set(year, month, date, hourOfDay, minute, second); - - return c.getTimeInMillis() + milliseconds; - } catch (NumberFormatException e) { - // format is invalid, we'll return -1 below. - } - - } - - // invalid time! - return -1; - } - - /** - * Handles the location attributes and store them into a {@link LocationPoint}. - * @param locationNode the {@link LocationPoint} to receive the location data. - * @param attributes the attributes from the XML node. - */ - private void handleLocation(LocationPoint locationNode, Attributes attributes) { - try { - double longitude = Double.parseDouble(attributes.getValue(ATTR_LONGITUDE)); - double latitude = Double.parseDouble(attributes.getValue(ATTR_LATITUDE)); - - locationNode.setLocation(longitude, latitude); - } catch (NumberFormatException e) { - // wrong data, do nothing. - } - } - - WayPoint[] getWayPoints() { - if (mWayPoints != null) { - return mWayPoints.toArray(new WayPoint[mWayPoints.size()]); - } - - return null; - } - - Track[] getTracks() { - if (mTrackList != null) { - return mTrackList.toArray(new Track[mTrackList.size()]); - } - - return null; - } - - boolean getSuccess() { - return mSuccess; - } - } - - /** - * A GPS track. - * <p/>A track is composed of a list of {@link TrackPoint} and optional name and comment. - */ - public final static class Track { - private String mName; - private String mComment; - private List<TrackPoint> mPoints = new ArrayList<TrackPoint>(); - - void setName(String name) { - mName = name; - } - - public String getName() { - return mName; - } - - void setComment(String comment) { - mComment = comment; - } - - public String getComment() { - return mComment; - } - - void addPoint(TrackPoint trackPoint) { - mPoints.add(trackPoint); - } - - public TrackPoint[] getPoints() { - return mPoints.toArray(new TrackPoint[mPoints.size()]); - } - - public long getFirstPointTime() { - if (mPoints.size() > 0) { - return mPoints.get(0).getTime(); - } - - return -1; - } - - public long getLastPointTime() { - if (mPoints.size() > 0) { - return mPoints.get(mPoints.size()-1).getTime(); - } - - return -1; - } - - public int getPointCount() { - return mPoints.size(); - } - } - - /** - * Creates a new GPX parser for a file specified by its full path. - * @param fileName The full path of the GPX file to parse. - */ - public GpxParser(String fileName) { - mFileName = fileName; - } - - /** - * Parses the GPX file. - * @return <code>true</code> if success. - */ - public boolean parse() { - try { - SAXParser parser = sParserFactory.newSAXParser(); - - mHandler = new GpxHandler(); - - parser.parse(new InputSource(new FileReader(mFileName)), mHandler); - - return mHandler.getSuccess(); - } catch (ParserConfigurationException e) { - } catch (SAXException e) { - } catch (IOException e) { - } finally { - } - - return false; - } - - /** - * Returns the parsed {@link WayPoint} objects, or <code>null</code> if none were found (or - * if the parsing failed. - */ - public WayPoint[] getWayPoints() { - if (mHandler != null) { - return mHandler.getWayPoints(); - } - - return null; - } - - /** - * Returns the parsed {@link Track} objects, or <code>null</code> if none were found (or - * if the parsing failed. - */ - public Track[] getTracks() { - if (mHandler != null) { - return mHandler.getTracks(); - } - - return null; - } -} |