Version 18, July 2015

[GpsPrune.git] / tim / prune / function / OpenCachingDeXmlHandler.java

diff --git a/tim/prune/function/OpenCachingDeXmlHandler.java b/tim/prune/function/OpenCachingDeXmlHandler.java
new file mode 100644 (file)
index 0000000..b4b28d5
--- /dev/null
+++ b/tim/prune/function/OpenCachingDeXmlHandler.java
@@ -0,0 +1,102 @@
+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 opencaching.de api
+ */
+public class OpenCachingDeXmlHandler 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("result")) {
+                       _trackList = new ArrayList<SearchResult>();
+               }
+               else if (inTagName.equals("cache"))
+               {
+                       _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("cache"))
+               {
+                       // end of the entry
+                       _trackList.add(_track);
+               }
+               else if (inTagName.equals("name")) {
+                       _track.setTrackName(_value);
+               }
+               else if (inTagName.equals("desc")) {
+                       _track.setDescription(_value);
+               }
+               else if (inTagName.equals("lat")) {
+                       _track.setLatitude(_value);
+               }
+               else if (inTagName.equals("lon")) {
+                       _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("link")) {
+                       _track.setWebUrl(_value);
+               }
+               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;
+       }
+}