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KML: Support of NetworkLink.
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[email protected] committed Jan 18, 2014
1 parent 759a609 commit 46167ed
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Showing 3 changed files with 194 additions and 64 deletions.
96 changes: 93 additions & 3 deletions OSMBonusPack/src/org/osmdroid/bonuspack/kml/KmlDocument.java
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,8 @@
import java.io.Writer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.osmdroid.bonuspack.utils.BonusPackHelper;
Expand All @@ -32,7 +34,8 @@
*
* Supports the following KML Geometry: Point, LineString and Polygon. <br>
* Supports KML Document and Folder hierarchy. <br>
* Supports LineStyle, PolyStyle and IconStyle. <br>
* Supports NetworkLink. <br>
* Supports LineStyle, PolyStyle and IconStyle - shared and inline. <br>
* Supports colorMode: normal, random<br>
* Supports ExtendedData inside Features, with support for <Data> elements and <SimpleData> elements.
* In all cases, values are stored as Java String, there is no handling of <Schema> definition. <br>
Expand Down Expand Up @@ -109,15 +112,82 @@ protected static GeoPoint parseKmlCoord(String input){
}
}

protected static boolean parseKmlCoord2(String input, int tuple[]){
int end1 = input.indexOf(',');
int end2 = input.indexOf(',', end1+1);
try {
if (end2 == -1){
tuple[1] = (int)(Double.parseDouble(input.substring(0, end1))*1E6); //lon
tuple[0] = (int)(Double.parseDouble(input.substring(end1+1, input.length()))*1E6); //lat
} else {
tuple[1] = (int)(Double.parseDouble(input.substring(0, end1))*1E6);
tuple[0] = (int)(Double.parseDouble(input.substring(end1+1, end2))*1E6);
tuple[2] = (int)(Double.parseDouble(input.substring(end2+1, input.length()))*1E6);
}
return true;
} catch (NumberFormatException e) {
return false;
} catch (IndexOutOfBoundsException e) {
return false;
}
}

/** KML coordinates are: lon,lat{,alt} tuples separated by separators (space, tab, cr). */
protected static ArrayList<GeoPoint> parseKmlCoordinates(String input){
LinkedList<GeoPoint> tmpCoords = new LinkedList<GeoPoint>();
int i = 0;
int tupleStart = 0;
int length = input.length();
boolean startReadingTuple = false;
while (i<length){
char c = input.charAt(i);
if (c==' '|| c=='\n' || c=='\t'){
if (startReadingTuple){ //just ending coords portion:
String tuple = input.substring(tupleStart, i);
GeoPoint p = parseKmlCoord(tuple);
if (p != null)
tmpCoords.add(p);
startReadingTuple = false;
}
} else { //data
if (!startReadingTuple){ //just ending space portion
startReadingTuple = true;
tupleStart = i;
}
if (i == length-1){ //at the end => handle last tuple:
String tuple = input.substring(tupleStart, i+1);
GeoPoint p = parseKmlCoord(tuple);
if (p != null)
tmpCoords.add(p);
}
}
i++;
}
ArrayList<GeoPoint> coordinates = new ArrayList<GeoPoint>(tmpCoords.size());
coordinates.addAll(tmpCoords);
//Various attempts to optimize - without significant result
/*
String[] splitted = input.split("\\s+");
ArrayList<GeoPoint> coordinates = new ArrayList<GeoPoint>(splitted.length);
for (int i=0; i<splitted.length; i++){
GeoPoint p = parseKmlCoord(splitted[i]);
if (p != null)
coordinates.add(p);
}
*/
/*
String[] splitted = input.split("\\s+");
int[][] coords = new int[splitted.length][3];
int end = 0;
for (int i=0; i<splitted.length; i++){
boolean ok = parseKmlCoord2(splitted[i], coords[end]);
if (ok)
end++;
}
ArrayList<GeoPoint> coordinates = new ArrayList<GeoPoint>(10);
if (end > 0)
coordinates.add(new GeoPoint(coords[0][0], coords[0][1], coords[0][2]));
*/
return coordinates;
}

Expand Down Expand Up @@ -215,7 +285,7 @@ public boolean parseFile(File file){
e.printStackTrace();
handler.mKmlRoot = null;
}
//Log.d(BonusPackHelper.LOG_TAG, "KmlProvider.parseFile - end");
Log.d(BonusPackHelper.LOG_TAG, "KmlProvider.parseFile - end");
kmlRoot = handler.mKmlRoot;
return (handler.mKmlRoot != null);
}
Expand All @@ -232,12 +302,14 @@ class KmlSaxHandler extends DefaultHandler {
String mCurrentStyleId;
ColorStyle mColorStyle;
String mDataName;
boolean mIsNetworkLink;

public KmlSaxHandler(){
mKmlRoot = new KmlFeature();
mKmlRoot.createAsFolder();
mKmlStack = new ArrayList<KmlFeature>();
mKmlStack.add(mKmlRoot);
mIsNetworkLink = false;
}

public void startElement(String uri, String localName, String name,
Expand All @@ -250,6 +322,12 @@ public void startElement(String uri, String localName, String name,
mKmlCurrentFeature.createAsFolder();
mKmlCurrentFeature.mId = attributes.getValue("id");
mKmlStack.add(mKmlCurrentFeature); //push on stack
} else if (localName.equals("NetworkLink")){
mKmlCurrentFeature = new KmlFeature();
mKmlCurrentFeature.createAsFolder();
mKmlCurrentFeature.mId = attributes.getValue("id");
mKmlStack.add(mKmlCurrentFeature); //push on stack
mIsNetworkLink = true;
} else if (localName.equals("Placemark")) {
mKmlCurrentFeature = new KmlFeature();
mKmlCurrentFeature.mId = attributes.getValue("id");
Expand Down Expand Up @@ -281,11 +359,13 @@ public void endElement(String uri, String localName, String name)
throws SAXException {
if (localName.equals("Document")){
//Document is the root, nothing to do.
} else if (localName.equals("Folder") || localName.equals("Placemark")) {
} else if (localName.equals("Folder") || localName.equals("Placemark") || localName.equals("NetworkLink")) {
KmlFeature parent = mKmlStack.get(mKmlStack.size()-2); //get parent
parent.add(mKmlCurrentFeature); //add current in its parent
mKmlStack.remove(mKmlStack.size()-1); //pop current from stack
mKmlCurrentFeature = mKmlStack.get(mKmlStack.size()-1); //set current to top of stack
if (localName.equals("NetworkLink"))
mIsNetworkLink = false;
} else if (localName.equals("Point")){
mKmlCurrentFeature.mObjectType = KmlFeature.POINT;
} else if (localName.equals("LineString")){
Expand Down Expand Up @@ -323,7 +403,17 @@ public void endElement(String uri, String localName, String name)
}
} else if (localName.equals("href")){
if (mCurrentStyle != null && mCurrentStyle.iconColorStyle != null){
//href of an Icon:
mCurrentStyle.setIcon(mStringBuilder.toString());
} else if (mIsNetworkLink){
//href of a NetworkLink:
String href = mStringBuilder.toString();
KmlDocument subDocument = new KmlDocument();
subDocument.parseUrl(href); //TODO: if local file, parseFile(href)
//add subDoc root to the current feature, which is -normally- the NetworkLink:
mKmlCurrentFeature.add(subDocument.kmlRoot);
//add subDoc styles to mStyles:
mStyles.putAll(subDocument.mStyles);
}
} else if (localName.equals("Style")){
if (mCurrentStyleId != null)
Expand Down
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