/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#include <windows.h>

#include "jni.h"

#include "jni_util.h"

#include "jlong.h"

#include "sun_nio_fs_RegistryFileTypeDetector.h"

JNIEXPORT jstring JNICALL

Java_sun_nio_fs_RegistryFileTypeDetector_queryStringValue(JNIEnv* env, jclass this,

    jlong keyAddress, jlong nameAddress)

{

    LPCWSTR lpSubKey= (LPCWSTR)jlong_to_ptr(keyAddress);

    LPWSTR lpValueName = (LPWSTR)jlong_to_ptr(nameAddress);

    LONG res;

    HKEY hKey;

    jstring result = NULL;

    res = RegOpenKeyExW(HKEY_CLASSES_ROOT, lpSubKey, 0, KEY_READ, &hKey);

    if (res == ERROR_SUCCESS) {

        DWORD type;

        BYTE data[255];

        DWORD size = sizeof(data);

        res = RegQueryValueExW(hKey, lpValueName, NULL, &type, (LPBYTE)&data, &size);

        if (res == ERROR_SUCCESS) {

            if (type == REG_SZ) {

                jsize len = (jsize)wcslen((WCHAR*)data);

                result = (*env)->NewString(env, (const jchar*)&data, len);

            }

        }

        RegCloseKey(hKey);

    }

    return result;

}