/*******************************************************************************
* Copyright (c) 2000, 2016 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Benjamin Muskalla <b.muskalla@gmx.net> - [spell checking][implementation] PersistentSpellDictionary closes wrong stream - https://bugs.eclipse.org/bugs/show_bug.cgi?id=236421
*******************************************************************************/
package org.eclipse.jdt.internal.ui.text.spelling.engine;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URL;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import org.eclipse.jdt.internal.ui.JavaPlugin;
/**
* Persistent modifiable word-list based dictionary.
*
* @since 3.0
*/
public class PersistentSpellDictionary extends AbstractSpellDictionary {
/** The word list location */
private final URL fLocation;
/**
* Creates a new persistent spell dictionary.
*
* @param url the URL of the word list for this dictionary
*/
public PersistentSpellDictionary(final URL url) {
fLocation= url;
}
@Override
public boolean acceptsWords() {
return true;
}
@Override
public void addWord(final String word) {
if (isCorrect(word))
return;
FileOutputStream fileStream= null;
try {
Charset charset= Charset.forName(getEncoding());
ByteBuffer byteBuffer= charset.encode(word + "\n"); //$NON-NLS-1$
int size= byteBuffer.limit();
final byte[] byteArray;
if (byteBuffer.hasArray())
byteArray= byteBuffer.array();
else {
byteArray= new byte[size];
byteBuffer.get(byteArray);
}
fileStream= new FileOutputStream(fLocation.getPath(), true);
// Encoding UTF-16 charset writes a BOM. In which case we need to cut it away if the file isn't empty
int bomCutSize= 0;
if (!isEmpty() && "UTF-16".equals(charset.name())) //$NON-NLS-1$
bomCutSize= 2;
fileStream.write(byteArray, bomCutSize, size - bomCutSize);
} catch (IOException exception) {
JavaPlugin.log(exception);
return;
} finally {
try {
if (fileStream != null)
fileStream.close();
} catch (IOException e) {
}
}
hashWord(word);
}
@Override
protected final URL getURL() {
return fLocation;
}
}