X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Ffunction%2FGetWikipediaXmlHandler.java;fp=src%2Ftim%2Fprune%2Ffunction%2FGetWikipediaXmlHandler.java;h=b5cb3f920f7533de8474dbf7e4466c1a78b4ba82;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/function/GetWikipediaXmlHandler.java b/src/tim/prune/function/GetWikipediaXmlHandler.java
new file mode 100644
index 0000000..b5cb3f9
--- /dev/null
+++ b/src/tim/prune/function/GetWikipediaXmlHandler.java
@@ -0,0 +1,101 @@
+package tim.prune.function;
+
+import java.util.ArrayList;
+
+import org.xml.sax.Attributes;
+import org.xml.sax.SAXException;
+import org.xml.sax.helpers.DefaultHandler;
+
+import tim.prune.function.search.SearchResult;
+
+/**
+ * XML handler for dealing with XML returned from the geonames api,
+ * both from the search by name and search by location
+ */
+public class GetWikipediaXmlHandler extends DefaultHandler
+{
+	private String _value = null;
+	private ArrayList<SearchResult> _trackList = null;
+	private SearchResult _track = null;
+	private String _errorMessage = null;
+
+
+	/**
+	 * React to the start of an XML tag
+	 */
+	public void startElement(String inUri, String inLocalName, String inTagName,
+		Attributes inAttributes) throws SAXException
+	{
+		if (inTagName.equals("geonames")) {
+			_trackList = new ArrayList<SearchResult>();
+		}
+		else if (inTagName.equals("entry")) {
+			_track = new SearchResult();
+		}
+		else if (inTagName.equals("status")) {
+			_errorMessage = inAttributes.getValue("message");
+		}
+		else _value = null;
+		super.startElement(inUri, inLocalName, inTagName, inAttributes);
+	}
+
+	/**
+	 * React to the end of an XML tag
+	 */
+	public void endElement(String inUri, String inLocalName, String inTagName)
+	throws SAXException
+	{
+		if (inTagName.equals("entry")) {
+			// end of the entry
+			_trackList.add(_track);
+		}
+		else if (inTagName.equals("title")) {
+			_track.setTrackName(_value);
+		}
+		else if (inTagName.equals("summary")) {
+			_track.setDescription(_value);
+		}
+		else if (inTagName.equals("lat")) {
+			_track.setLatitude(_value);
+		}
+		else if (inTagName.equals("lng")) {
+			_track.setLongitude(_value);
+		}
+		else if (inTagName.equals("distance")) {
+			try {
+				_track.setLength(Double.parseDouble(_value) * 1000.0); // convert from km to m
+			}
+			catch (NumberFormatException nfe) {}
+		}
+		else if (inTagName.equals("wikipediaUrl")) {
+			_track.setWebUrl(_value.replaceFirst("http://", "https://"));
+		}
+		super.endElement(inUri, inLocalName, inTagName);
+	}
+
+	/**
+	 * React to characters received inside tags
+	 */
+	public void characters(char[] inCh, int inStart, int inLength)
+	throws SAXException
+	{
+		String value = new String(inCh, inStart, inLength);
+		_value = (_value==null?value:_value+value);
+		super.characters(inCh, inStart, inLength);
+	}
+
+	/**
+	 * @return the list of tracks
+	 */
+	public ArrayList<SearchResult> getTrackList()
+	{
+		return _trackList;
+	}
+
+	/**
+	 * @return error message, if any
+	 */
+	public String getErrorMessage() {
+		return _errorMessage;
+	}
+}