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Viewing changes to src/org/herac/tuxguitar/gui/editors/chord/xml/ChordWriter.java

  • Committer: Bazaar Package Importer
  • Author(s): Philippe Coval
  • Date: 2007-02-04 01:41:23 UTC
  • Revision ID: james.westby@ubuntu.com-20070204014123-9pv7okph0iaiqkvw
Tags: upstream-0.9.1
Import upstream version 0.9.1

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src/org/herac/tuxguitar/gui/editors/chord/xml/ChordWriter.java
 
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package org.herac.tuxguitar.gui.editors.chord.xml;
 
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import java.io.File;
 
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import java.io.FileNotFoundException;
 
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import java.io.FileOutputStream;
 
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import java.util.Iterator;
 
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import java.util.List;
 
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import javax.xml.parsers.DocumentBuilder;
 
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import javax.xml.parsers.DocumentBuilderFactory;
 
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import javax.xml.parsers.FactoryConfigurationError;
 
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import javax.xml.parsers.ParserConfigurationException;
 
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import javax.xml.transform.OutputKeys;
 
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import javax.xml.transform.Result;
 
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import javax.xml.transform.Source;
 
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import javax.xml.transform.Transformer;
 
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import javax.xml.transform.TransformerConfigurationException;
 
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import javax.xml.transform.TransformerException;
 
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import javax.xml.transform.TransformerFactory;
 
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import javax.xml.transform.dom.DOMSource;
 
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import javax.xml.transform.stream.StreamResult;
 
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import org.herac.tuxguitar.song.models.Chord;
 
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import org.w3c.dom.Attr;
 
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import org.w3c.dom.Document;
 
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import org.w3c.dom.Node;
 
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public class ChordWriter {
 
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        private static final String CHORD_LIST_TAG = "chords";
 
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        private static final String CHORD_TAG = "chord";
 
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        private static final String CHORD_NAME_ATTRIBUTE = "name";
 
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        private static final String CHORD_STRINGS_ATTRIBUTE = "strings";
 
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        private static final String STRING_TAG = "string";
 
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        private static final String STRING_NUMBER_ATTRIBUTE = "number";
 
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        private static final String STRING_FRET_ATTRIBUTE = "fret";
 
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    public static void setChords(List chords,String fileName) {         
 
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        File file = new File(fileName);
 
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        Document doc = createDocument();
 
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        setChords(chords,doc);
 
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        saveDocument(doc,file);        
 
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    }
 
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    public static Document createDocument() {
 
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        Document document = null;
 
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        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
 
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        try {
 
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            DocumentBuilder builder = factory.newDocumentBuilder();
 
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            document = builder.newDocument();
 
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        }catch (ParserConfigurationException pce) {
 
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            pce.printStackTrace();
 
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        } 
 
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        return document;
 
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    }        
 
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    public static void saveDocument(Document document,File file) {
 
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        try {
 
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            FileOutputStream fs = new FileOutputStream(file);
 
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            // Write it out again
 
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            TransformerFactory xformFactory = TransformerFactory.newInstance();
 
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            Transformer idTransform = xformFactory.newTransformer();
 
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            Source input = new DOMSource(document);            
 
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            Result output = new StreamResult(fs);
 
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            idTransform.setOutputProperty(OutputKeys.INDENT, "yes");
 
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            idTransform.transform(input, output);
 
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        } catch (FactoryConfigurationError e) {
 
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            e.printStackTrace();
 
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        } catch (TransformerConfigurationException e) {
 
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            e.printStackTrace();
 
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        } catch (TransformerException e) {
 
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            e.printStackTrace();
 
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        } catch (FileNotFoundException e) {
 
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            e.printStackTrace();
 
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        }
 
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    }
 
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    /**
 
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     * Write chords to xml file
 
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     */
 
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    private static void setChords(List chords,Document document){    
 
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        //chords tag
 
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        Node chordsNode = document.createElement(CHORD_LIST_TAG);
 
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        Iterator it = chords.iterator();
 
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        while(it.hasNext()){
 
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                Chord chord = (Chord)it.next();
 
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                //chord tag
 
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                Node chordNode = document.createElement(CHORD_TAG);
 
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                chordsNode.appendChild(chordNode);    
 
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                //name attribute
 
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                Attr nameAttr = document.createAttribute(CHORD_NAME_ATTRIBUTE);         
 
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                nameAttr.setNodeValue( chord.getName());        
 
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                chordNode.getAttributes().setNamedItem(nameAttr);               
 
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                //strings attribute             
 
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                Attr stringsAttr = document.createAttribute(CHORD_STRINGS_ATTRIBUTE);           
 
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                stringsAttr.setNodeValue(Integer.toString(chord.getStrings().length));          
 
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                chordNode.getAttributes().setNamedItem(stringsAttr);                            
 
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                for(int i = 0;i < chord.getStrings().length; i++){
 
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                        //string tag                            
 
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                        Node stringNode = document.createElement(STRING_TAG);
 
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                        chordNode.appendChild(stringNode);
 
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                        //number attribute
 
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                        Attr numberAttr = document.createAttribute(STRING_NUMBER_ATTRIBUTE);            
 
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                        numberAttr.setNodeValue(Integer.toString(i));           
 
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                        stringNode.getAttributes().setNamedItem(numberAttr);
 
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                        //fret attribute
 
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                        Attr fretAttr = document.createAttribute(STRING_FRET_ATTRIBUTE);        
 
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                        fretAttr.setNodeValue(Integer.toString(chord.getFretValue(i)));         
 
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                        stringNode.getAttributes().setNamedItem(fretAttr);                      
 
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                }
 
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        }
 
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        document.appendChild(chordsNode);    
 
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    }
 
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}