/**
* $RCSfile: ,v $
* $Revision: $
* $Date: $
*
* Copyright (C) 2004-2011 Jive Software. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jivesoftware.sparkimpl.settings.local;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringWriter;
/**
* Class that helps getting the My Documents Folder on Windows via the registry
*
* @author wolf.posdorfer
*
*/
public class WinRegistryReader {
private static final String REGQUERY_UTIL = "reg query ";
private static final String REGSTR_TOKEN = "REG_SZ";
private static final String PERSONAL_FOLDER_CMD = REGQUERY_UTIL
+ "\"HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\"
+ "Explorer\\Shell Folders\" /v Personal";
/**
* returns the Path to the "My Documents" folder or <code>null</code>
*
* @return {@link String}
*/
public static String getMyDocumentsFromWinRegistry() {
try {
Process process = Runtime.getRuntime().exec(PERSONAL_FOLDER_CMD);
StreamReader streamreader = new StreamReader(process.getInputStream());
streamreader.start();
process.waitFor();
streamreader.join();
String result = streamreader.getResult();
int p = result.indexOf(REGSTR_TOKEN);
if (p == -1)
return null;
return result.substring(p + REGSTR_TOKEN.length()).trim();
} catch (Exception e) {
return null;
}
}
static class StreamReader extends Thread {
private InputStream is;
private StringWriter sw;
StreamReader(InputStream is) {
this.is = is;
sw = new StringWriter();
}
@Override
public void run() {
try {
int c;
while ((c = is.read()) != -1)
sw.write(c);
} catch (IOException e) {
System.err.println(e);
}
}
String getResult() {
return sw.toString();
}
}
}