com.github.jjYBdx4IL.utils.WindowsUtils Maven / Gradle / Ivy

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/*
 * Copyright (C) 2016 jjYBdx4IL (https://github.com/jjYBdx4IL)
 *
 * 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 com.github.jjYBdx4IL.utils;

import java.io.IOException;

/**
 *
 * @author jjYBdx4IL
 */
public class WindowsUtils {
	private static final String REGSTR_TOKEN = "REG_SZ";

	public static String getCurrentUserDesktopPath() {
		try {
			ProcRunner procRunner = new ProcRunner(
					false,
					"reg",
					"query",
					"HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Shell Folders",
					"/v",
					"DESKTOP"
			);
			int exitCode = procRunner.run();
			if (exitCode != 0) {
				throw new RuntimeException("registry command returned bad exit code");
			}
			String result = procRunner.getOutputBlob();
			int p = result.indexOf(REGSTR_TOKEN);
			if (p == -1) {
				throw new RuntimeException("registry command returned bad output: " + result);
			}
			return result.substring(p + REGSTR_TOKEN.length()).trim();
		} catch (IOException ex) {
			throw new RuntimeException(ex);
		}
	}
    
    private WindowsUtils() {}
}