/*******************************************************************************
* Copyright (c) 2010, 2011 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
*******************************************************************************/
package org.eclipse.cdt.internal.core.indexer;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Map;
import java.util.TreeMap;
/**
* this class is a registry which maps file name and file's encoding, the class
* is used by standalone indexer
*
* @author johnliu
*
*/
public class FileEncodingRegistry implements Serializable {
private Map<String, String> fFilePathToEncodingMap = null;
private String defaultEncoding;
public FileEncodingRegistry(String defaultEncoding) {
this.defaultEncoding = defaultEncoding;
fFilePathToEncodingMap = new TreeMap<String, String>();
}
public void setDefaultEncoding(String newDefaultEncoding) {
defaultEncoding = newDefaultEncoding;
}
public void registerFileEncoding(String filename, String encoding) {
if(defaultEncoding.equals(encoding)){
return;
}
if (fFilePathToEncodingMap != null) {
fFilePathToEncodingMap.put(filename, encoding);
}
}
public void unregisterFile(String filename) {
if (fFilePathToEncodingMap != null) {
fFilePathToEncodingMap.remove(filename);
}
}
public String getFileEncoding(String filename) {
String fileEncoding = null;
if (fFilePathToEncodingMap != null) {
fileEncoding = fFilePathToEncodingMap.get(filename);
}
if (fileEncoding != null) {
return fileEncoding;
} else {
return defaultEncoding;
}
}
public void clear() {
if (fFilePathToEncodingMap != null) {
fFilePathToEncodingMap.clear();
}
fFilePathToEncodingMap = null;
defaultEncoding = null;
}
// send as little over the wire as possible
private void writeObject(ObjectOutputStream out) throws IOException {
if (fFilePathToEncodingMap != null && fFilePathToEncodingMap.isEmpty()) {
fFilePathToEncodingMap = null;
}
out.defaultWriteObject();
}
}