+++ /dev/null
-package tim.prune.load.xml;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.InputStream;
-
-import javax.xml.parsers.SAXParser;
-import javax.xml.parsers.SAXParserFactory;
-
-import org.xml.sax.Attributes;
-import org.xml.sax.InputSource;
-import org.xml.sax.SAXException;
-import org.xml.sax.XMLReader;
-import org.xml.sax.helpers.DefaultHandler;
-import org.xml.sax.helpers.XMLReaderFactory;
-
-import tim.prune.App;
-import tim.prune.I18nManager;
-import tim.prune.data.SourceInfo;
-import tim.prune.load.MediaLinkInfo;
-
-/**
- * Class for handling loading of Xml files, and passing the
- * loaded data back to the App object
- */
-public class XmlFileLoader extends DefaultHandler implements Runnable
-{
- private File _file = null;
- private App _app = null;
- private XmlHandler _handler = null;
- private String _unknownType = null;
-
-
- /**
- * Constructor
- * @param inApp Application object to inform of track load
- */
- public XmlFileLoader(App inApp)
- {
- _app = inApp;
- }
-
- /**
- * Reset the handler to ensure data cleared
- */
- public void reset()
- {
- _handler = null;
- _unknownType = null;
- }
-
- /**
- * Open the selected file
- * @param inFile File to open
- */
- public void openFile(File inFile)
- {
- _file = inFile;
- reset();
- // start new thread in case xml parsing is time-consuming
- new Thread(this).start();
- }
-
-
- /**
- * Run method, to parse the file
- * @see java.lang.Runnable#run()
- */
- public void run()
- {
- FileInputStream inStream = null;
- boolean success = false;
- try
- {
- inStream = new FileInputStream(_file);
- success = parseXmlStream(inStream);
- }
- catch (FileNotFoundException fnfe) {}
-
- // Clean up the stream, don't need it any more
- try {inStream.close();} catch (IOException e2) {}
-
- if (success)
- {
- // Check whether handler was properly instantiated
- if (_handler == null)
- {
- // Wasn't either kml or gpx
- _app.showErrorMessageNoLookup("error.load.dialogtitle",
- I18nManager.getText("error.load.unknownxml") + " " + _unknownType);
- }
- else
- {
- SourceInfo.FILE_TYPE sourceType = (_handler instanceof GpxHandler ? SourceInfo.FILE_TYPE.GPX : SourceInfo.FILE_TYPE.KML);
- SourceInfo sourceInfo = new SourceInfo(_file, sourceType);
- sourceInfo.setFileTitle(_handler.getFileTitle());
-
- // Pass information back to app
- _app.informDataLoaded(_handler.getFieldArray(), _handler.getDataArray(),
- null, sourceInfo, _handler.getTrackNameList(),
- new MediaLinkInfo(_handler.getLinkArray()));
- }
- }
- }
-
-
- /**
- * Try both Xerces and the built-in java classes to parse the given xml stream
- * @param inStream input stream from file / zip / gzip
- * @return true on success, false if both xerces and built-in parser failed
- */
- public boolean parseXmlStream(InputStream inStream)
- {
- boolean success = false;
- // Firstly, try to use xerces to parse the xml (will throw an exception if not available)
- try
- {
- XMLReader xmlReader = XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");
- xmlReader.setContentHandler(this);
- xmlReader.parse(new InputSource(inStream));
- success = true; // worked
- }
- catch (Exception e) {} // don't care too much if it didn't work, there's a backup
-
- // If that didn't work, try the built-in classes (which work for xml1.0 but handling for 1.1 contains bugs)
- if (!success)
- {
- try
- {
- // Construct a SAXParser and use this as a default handler
- SAXParser saxParser = SAXParserFactory.newInstance().newSAXParser();
- saxParser.parse(inStream, this);
- success = true;
- }
- catch (Exception e)
- {
- // Show error dialog
- _app.showErrorMessageNoLookup("error.load.dialogtitle",
- I18nManager.getText("error.load.othererror") + " " + e.getMessage());
- }
- }
- return success;
- }
-
- /**
- * Receive a tag
- * @see org.xml.sax.ContentHandler#startElement(java.lang.String, java.lang.String, java.lang.String, org.xml.sax.Attributes)
- */
- public void startElement(String uri, String localName, String qName,
- Attributes attributes) throws SAXException
- {
- // Check for "kml" or "gpx" tags
- if (_handler == null)
- {
- if (qName.equals("kml")) {_handler = new KmlHandler();}
- else if (qName.equals("gpx")) {_handler = new GpxHandler();}
- else if (_unknownType == null && !qName.equals(""))
- {
- _unknownType = qName;
- }
- }
- else
- {
- // Handler instantiated so pass tags on to it
- _handler.startElement(uri, localName, qName, attributes);
- }
- super.startElement(uri, localName, qName, attributes);
- }
-
-
- /**
- * Receive characters, either between or inside tags
- * @see org.xml.sax.ContentHandler#characters(char[], int, int)
- */
- public void characters(char[] ch, int start, int length)
- throws SAXException
- {
- if (_handler != null)
- {
- // Handler instantiated so pass tags on to it
- _handler.characters(ch, start, length);
- }
- super.characters(ch, start, length);
- }
-
-
- /**
- * Receive end of element
- * @see org.xml.sax.ContentHandler#endElement(java.lang.String, java.lang.String, java.lang.String)
- */
- public void endElement(String uri, String localName, String qName)
- throws SAXException
- {
- if (_handler != null)
- {
- // Handler instantiated so pass tags on to it
- _handler.endElement(uri, localName, qName);
- }
- super.endElement(uri, localName, qName);
- }
-
- /**
- * @return The Xml handler used for the parsing
- */
- public XmlHandler getHandler()
- {
- return _handler;
- }
-}
projects / GpsPrune.git / blobdiff