1 /*

     2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.

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

     4  *

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

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

     7  * published by the Free Software Foundation.  Oracle designates this

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

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

    10  *

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

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

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

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

    15  * accompanied this code).

    16  *

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

    18  * 2 along with this work; if not, write to the Free Software Foundation,

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

    20  *

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

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

    23  * questions.

    24  */

    25 

    26 #include "Windows.h"

    27 #include "Utils.h"

    28 

    29 #define BUFFER_SIZE 4096

    30 

    31 wstring GetStringFromJString(JNIEnv *pEnv, jstring jstr) {

    32     const jchar *pJChars = pEnv->GetStringChars(jstr, NULL);

    33     if (pJChars == NULL) {

    34         return wstring(L"");

    35     }

    36 

    37     wstring wstr(pJChars);

    38 

    39     pEnv->ReleaseStringChars(jstr, pJChars);

    40 

    41     return wstr;

    42 }

    43 

    44 jstring GetJStringFromString(JNIEnv *pEnv, const jchar *unicodeChars, jsize len) {

    45     return pEnv->NewString(unicodeChars, len);

    46 }

    47 

    48 wstring GetLongPath(wstring path) {

    49     wstring result(L"");

    50 

    51     size_t len = path.length();

    52     if (len > 1) {

    53         if (path.at(len - 1) == '\\') {

    54             path.erase(len - 1);

    55         }

    56     }

    57 

    58     TCHAR *pBuffer = new TCHAR[BUFFER_SIZE];

    59     if (pBuffer != NULL) {

    60         DWORD dwResult = GetLongPathName(path.c_str(), pBuffer, BUFFER_SIZE);

    61         if (dwResult > 0 && dwResult < BUFFER_SIZE) {

    62             result = wstring(pBuffer);

    63         } else {

    64             delete [] pBuffer;

    65             pBuffer = new TCHAR[dwResult];

    66             if (pBuffer != NULL) {

    67                 DWORD dwResult2 = GetLongPathName(path.c_str(), pBuffer, dwResult);

    68                 if (dwResult2 == (dwResult - 1)) {

    69                     result = wstring(pBuffer);

    70                 }

    71             }

    72         }

    73 

    74         if (pBuffer != NULL) {

    75             delete [] pBuffer;

    76         }

    77     }

    78 

    79     return result;

    80 }