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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: 2008-06-19 00:30:30 UTC
  • mto: (5.1.2 sid)
  • mto: This revision was merged to the branch mainline in revision 3.
  • Revision ID: james.westby@ubuntu.com-20080619003030-h719szrhsngou7c6
Tags: upstream-1.0
Import upstream version 1.0

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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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}