Java Code Examples for com.sun.jna.platform.win32.WinReg#HKEY

private void checkKeyExists(
                             String rootKey,
                             String keyPath,
                             String keyName ) {

    try {
        WinReg.HKEY rootHKey = getHKey(rootKey);
        if (!Advapi32Util.registryValueExists(rootHKey, keyPath, keyName)) {
            throw new RegistryOperationsException("Registry key does not exist. "
                                                  + getDescription(rootKey, keyPath, keyName));
        }
    } catch (Win32Exception e) {
        throw new RegistryOperationsException("Registry key path does not exist. "
                                              + getDescription(rootKey, keyPath, keyName), e);
    }
}
 

private WinReg.HKEY getHKey(
                             String key ) {

    if (key.equalsIgnoreCase(HKEY_CLASSES_ROOT)) {
        return WinReg.HKEY_CLASSES_ROOT;
    } else if (key.equalsIgnoreCase(HKEY_CURRENT_USER)) {
        return WinReg.HKEY_CURRENT_USER;
    } else if (key.equalsIgnoreCase(HKEY_LOCAL_MACHINE)) {
        return WinReg.HKEY_LOCAL_MACHINE;
    } else if (key.equalsIgnoreCase(HKEY_USERS)) {
        return WinReg.HKEY_USERS;
    } else if (key.equalsIgnoreCase(HKEY_CURRENT_CONFIG)) {
        return WinReg.HKEY_CURRENT_CONFIG;
    } else {
        throw new RegistryOperationsException("Unsupported root key '" + key + "'");
    }
}
 

/**
 * Returns the osu! installation directory.
 * @return the directory, or null if not found
 */
private static File getOsuInstallationDirectory() {
	if (!System.getProperty("os.name").startsWith("Win"))
		return null;  // only works on Windows

	// registry location
	final WinReg.HKEY rootKey = WinReg.HKEY_CLASSES_ROOT;
	final String regKey = "osu\\DefaultIcon";
	final String regValue = null; // default value
	final String regPathPattern = "\"(.+)\\\\[^\\/]+\\.exe\"";

	String value;
	try {
		value = Advapi32Util.registryGetStringValue(rootKey, regKey, regValue);
	} catch (Win32Exception e) {
		return null;  // key/value not found
	}
	Pattern pattern = Pattern.compile(regPathPattern);
	Matcher m = pattern.matcher(value);
	if (!m.find())
		return null;
	File dir = new File(m.group(1));
	return (dir.isDirectory()) ? dir : null;
}
 

public static boolean isAddedToContextMenu() {
    if (!Platform.isWindows()) {
        return false;
    }
    final WinReg.HKEY REG_CLASSES_HKEY = WinReg.HKEY_LOCAL_MACHINE;
    final String REG_CLASSES_PATH = "Software\\Classes\\";
    try {
        if (!Advapi32Util.registryKeyExists(REG_CLASSES_HKEY, REG_CLASSES_PATH + ".swf")) {
            return false;
        }
        String clsName = Advapi32Util.registryGetStringValue(REG_CLASSES_HKEY, REG_CLASSES_PATH + ".swf", "");
        if (clsName == null) {
            return false;
        }
        return Advapi32Util.registryKeyExists(REG_CLASSES_HKEY, REG_CLASSES_PATH + clsName + "\\shell\\ffdec");
    } catch (Win32Exception ex) {
        return false;
    }
}
 

private File loadOsuInstallationDirectory() {
	if (!System.getProperty("os.name").startsWith("Win")) {
		return null;
	}

	final WinReg.HKEY rootKey = WinReg.HKEY_CLASSES_ROOT;
	final String regKey = "osu\\DefaultIcon";
	final String regValue = null; // default value
	final String regPathPattern = "\"(.+)\\\\[^\\/]+\\.exe\"";

	String value;
	try {
		value = Advapi32Util.registryGetStringValue(rootKey, regKey, regValue);
	} catch (Win32Exception ignored) {
		return null;
	}
	Pattern pattern = Pattern.compile(regPathPattern);
	Matcher m = pattern.matcher(value);
	if (!m.find()) {
		return null;
	}
	File dir = new File(m.group(1));
	if (dir.isDirectory()) {
		return dir;
	}
	return null;
}
 

@Nullable
public static String readString(WinReg.HKEY hkey, String key, String valueName) {
    if (! isAvailable()) {
        return null;
    }
    try {
        return Advapi32Util.registryGetStringValue(hkey, key, valueName);
    } catch (Win32Exception e) {
        return null;
    }
}
 

private static void registryDeleteKey(WinReg.HKEY hKey, String keyName) {
    boolean exists = Advapi32Util.registryKeyExists(hKey, keyName);
    if (exists) {
        Advapi32Util.registryDeleteKey(hKey, keyName);
    }
}
 

private static void registryDeleteValue(WinReg.HKEY root, String keyPath, String valueName) {
    boolean exists = Advapi32Util.registryValueExists(root, keyPath, valueName);
    if (exists) {
        Advapi32Util.registryDeleteValue(root, keyPath, valueName);
    }
}