296 lines
9.1 KiB
Java
296 lines
9.1 KiB
Java
package btools.routingapp;
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import android.graphics.Point;
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import org.xmlpull.v1.XmlPullParser;
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import org.xmlpull.v1.XmlPullParserFactory;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.FileReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import java.util.TreeMap;
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import btools.router.OsmNodeNamed;
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import btools.router.OsmNogoPolygon;
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/**
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* Read coordinates from a gpx-file
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*/
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public class CoordinateReader {
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protected static String[] posnames
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= new String[]{"from", "via1", "via2", "via3", "via4", "via5", "via6", "via7", "via8", "via9", "to"};
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private final String internalDir;
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public List<OsmNodeNamed> waypoints;
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public List<OsmNodeNamed> nogopoints;
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public String basedir;
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public String rootdir;
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public String tracksdir;
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public List<OsmNodeNamed> allpoints;
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private boolean nogosOnly;
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private Map<String, Map<String, OsmNodeNamed>> allpointsMap;
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private HashMap<String, OsmNodeNamed> pointmap;
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public CoordinateReader(String basedir) {
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this.basedir = basedir;
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internalDir = basedir + "/brouter/import";
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tracksdir = "/brouter/import/tracks";
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rootdir = "/brouter/import";
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}
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public static CoordinateReader obtainValidReader(String basedir) throws IOException {
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return obtainValidReader(basedir, false);
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}
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public static CoordinateReader obtainValidReader(String basedir, boolean nogosOnly) throws IOException {
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CoordinateReader cor = new CoordinateReader(basedir);
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cor.nogosOnly = nogosOnly;
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cor.readFromTo();
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return cor;
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}
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public int getTurnInstructionMode() {
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return 4; // comment style
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}
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/*
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* read the from and to position from a gpx-file
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* (with hardcoded name for now)
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*/
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public void readPointmap() throws IOException {
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if (!_readPointmap(internalDir + "/favourites_bak.gpx")) {
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_readPointmap(internalDir + "/favourites.gpx");
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}
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_readNogoLines(basedir + tracksdir);
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}
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private boolean _readPointmap(String filename) throws IOException {
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BufferedReader br;
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try {
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br = new BufferedReader(
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new InputStreamReader(
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new FileInputStream(filename)));
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} catch (FileNotFoundException e) {
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// ignore until it's reading error
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return false;
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}
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OsmNodeNamed n = null;
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for (; ; ) {
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String line = br.readLine();
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if (line == null) break;
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int idx0 = line.indexOf(" lat=\"");
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int idx10 = line.indexOf("<name>");
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if (idx0 >= 0) {
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n = new OsmNodeNamed();
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idx0 += 6;
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int idx1 = line.indexOf('"', idx0);
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n.ilat = (int) ((Double.parseDouble(line.substring(idx0, idx1)) + 90.) * 1000000. + 0.5);
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int idx2 = line.indexOf(" lon=\"");
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if (idx2 < 0) continue;
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idx2 += 6;
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int idx3 = line.indexOf('"', idx2);
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n.ilon = (int) ((Double.parseDouble(line.substring(idx2, idx3)) + 180.) * 1000000. + 0.5);
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if (idx3 < 0) continue;
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}
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if (n != null && idx10 >= 0) {
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idx10 += 6;
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int idx11 = line.indexOf("</name>", idx10);
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if (idx11 >= 0) {
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n.name = line.substring(idx10, idx11).trim();
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checkAddPoint("(one-for-all)", n);
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}
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}
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}
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br.close();
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return true;
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}
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private void _readNogoLines(String dirname) {
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File dir = new File(dirname);
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if (dir.exists() && dir.isDirectory()) {
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for (final File file : dir.listFiles()) {
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final String name = file.getName();
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if (name.startsWith("nogo") && name.endsWith(".gpx")) {
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try {
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_readNogoLine(file);
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} catch (Exception ignored) {
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}
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}
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}
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}
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}
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private void _readNogoLine(File file) throws Exception {
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XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
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factory.setNamespaceAware(false);
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XmlPullParser xpp = factory.newPullParser();
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xpp.setInput(new FileReader(file));
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List<Point> tmpPts = new ArrayList<>();
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int eventType = xpp.getEventType();
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int numSeg = 0;
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boolean bIsNogoPoint = false;
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String sNogoName = null;
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while (eventType != XmlPullParser.END_DOCUMENT) {
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switch (eventType) {
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case XmlPullParser.START_TAG: {
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if (xpp.getName().equals("trkpt") || xpp.getName().equals("rtept") || xpp.getName().equals("wpt")) {
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final String lon = xpp.getAttributeValue(null, "lon");
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final String lat = xpp.getAttributeValue(null, "lat");
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if (lon != null && lat != null) {
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tmpPts.add(new Point(
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(int) ((Double.parseDouble(lon) + 180.) * 1000000. + 0.5),
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(int) ((Double.parseDouble(lat) + 90.) * 1000000. + 0.5)));
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if (xpp.getName().equals("wpt")) bIsNogoPoint = true;
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}
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} else if (bIsNogoPoint && xpp.getName().equals("name")) {
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sNogoName = xpp.nextText();
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}
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break;
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}
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case XmlPullParser.END_TAG: {
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if (xpp.getName().equals("trkseg") || xpp.getName().equals("rte")) { // rte has no segment
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OsmNogoPolygon nogo;
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if (tmpPts.size() > 0) {
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if (tmpPts.get(0).x == tmpPts.get(tmpPts.size() - 1).x &&
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tmpPts.get(0).y == tmpPts.get(tmpPts.size() - 1).y) {
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nogo = new OsmNogoPolygon(true);
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} else {
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nogo = new OsmNogoPolygon(false);
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}
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for (Point p : tmpPts) {
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nogo.addVertex(p.x, p.y);
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}
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nogo.calcBoundingCircle();
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final String name = file.getName();
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nogo.name = name.substring(0, name.length() - 4);
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if (numSeg > 0) {
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nogo.name += Integer.toString(numSeg + 1);
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}
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numSeg++;
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checkAddPoint("(one-for-all)", nogo);
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}
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tmpPts.clear();
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} else if (xpp.getName().equals("wpt")) {
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Point p = tmpPts.get(tmpPts.size() - 1);
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if (p != null) {
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OsmNodeNamed nogo = new OsmNodeNamed();
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nogo.ilon = p.x;
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nogo.ilat = p.y;
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nogo.name = (sNogoName != null ? sNogoName : "nogo1000 x");
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nogo.isNogo = true;
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nogo.radius = 20;
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try {
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nogo.radius = (sNogoName != null ? Integer.parseInt(sNogoName.substring(4, sNogoName.indexOf(" "))) : 20);
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} catch (Exception e) {
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try {
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nogo.radius = (sNogoName != null ? Integer.parseInt(sNogoName.substring(4)) : 20);
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} catch (Exception e1) {
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nogo.radius = 20;
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}
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}
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bIsNogoPoint = false;
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sNogoName = null;
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checkAddPoint("(one-for-all)", nogo);
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tmpPts.clear();
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}
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}
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break;
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}
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}
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eventType = xpp.next();
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}
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}
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public void readAllPoints() throws Exception {
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allpointsMap = new TreeMap<>();
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readFromTo();
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allpoints = new ArrayList<>();
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Set<String> names = new HashSet<>();
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for (String category : allpointsMap.keySet()) {
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Map<String, OsmNodeNamed> cat = allpointsMap.get(category);
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if (cat != null && cat.size() < 101) {
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for (OsmNodeNamed wp : cat.values()) {
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if (names.add(wp.name)) {
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allpoints.add(wp);
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}
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}
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} else {
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OsmNodeNamed nocatHint = new OsmNodeNamed();
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nocatHint.name = "<big category " + category + " supressed>";
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allpoints.add(nocatHint);
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}
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}
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}
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/*
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* read the from, to and via-positions from a gpx-file
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*/
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public void readFromTo() throws IOException {
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pointmap = new HashMap<>();
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waypoints = new ArrayList<>();
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nogopoints = new ArrayList<>();
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readPointmap();
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boolean fromToMissing = false;
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for (String name : posnames) {
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OsmNodeNamed n = pointmap.get(name);
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if (n != null) {
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waypoints.add(n);
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} else {
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if ("from".equals(name)) fromToMissing = true;
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if ("to".equals(name)) fromToMissing = true;
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}
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}
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if (fromToMissing) waypoints.clear();
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}
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protected void checkAddPoint(String category, OsmNodeNamed n) {
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if (allpointsMap != null) {
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if (category == null) category = "";
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Map<String, OsmNodeNamed> cat = allpointsMap.get(category);
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if (cat == null) {
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cat = new TreeMap<>();
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allpointsMap.put(category, cat);
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}
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if (cat.size() < 101) {
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cat.put(n.name, n);
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}
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return;
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}
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boolean isKnown = false;
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for (String posname : posnames) {
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if (posname.equals(n.name)) {
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isKnown = true;
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break;
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}
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}
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if (isKnown) {
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if (pointmap.put(n.name, n) != null) {
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if (!nogosOnly) {
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throw new IllegalArgumentException("multiple " + n.name + "-positions!");
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}
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}
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} else if (n.name != null && n.name.startsWith("nogo")) {
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n.isNogo = true;
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n.nogoWeight = Double.NaN;
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nogopoints.add(n);
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}
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}
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}
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