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 #ifndef RESOURCES_H

    27 #define RESOURCES_H

    28 

    29 #include "WinSysInfo.h"

    30 

    31 

    32 /**

    33  * Classes for resource loading.

    34  * Common use cases:

    35  *  - check if resource is available and save it to file:

    36  *      Resource res(_T("MyResource"), _T("CustomResourceType"));

    37  *      if (res.available()) {

    38  *          res.saveToFile(_T("c:\\temp\\my_resource.bin"));

    39  *      }

    40  */

    41 

    42 class Resource {

    43 public:

    44     // name and type can be specified by string id,

    45     // by integer id (RT_* constants or MAKEINTRESOURCE)

    46     Resource(LPCWSTR name, LPCWSTR type,

    47             HINSTANCE module = SysInfo::getCurrentModuleHandle());

    48     Resource(UINT id, LPCWSTR type,

    49             HINSTANCE module = SysInfo::getCurrentModuleHandle());

    50 

    51     bool available() const;

    52 

    53     // all this methods throw exception if the resource is not available

    54     unsigned size() const;

    55     // gets raw pointer to the resource data

    56     LPCVOID rawData() const;

    57 

    58     // save the resource to a file

    59     void saveToFile(const std::wstring &filePath) const;

    60 

    61     typedef std::vector<BYTE> ByteArray;

    62     // returns the resource as byte array

    63     ByteArray binary() const;

    64 

    65 private:

    66     std::wstring nameStr;

    67     LPCWSTR namePtr;    // can be integer value or point to nameStr.c_str()

    68     std::wstring typeStr;

    69     LPCWSTR typePtr;    // can be integer value or point to nameStr.c_str()

    70     HINSTANCE instance;

    71 

    72     void init(LPCWSTR name, LPCWSTR type, HINSTANCE module);

    73 

    74     // generates error message

    75     std::string getErrMsg(const std::string &descr) const;

    76     HRSRC findResource() const;

    77     LPVOID getPtr(DWORD &size) const;

    78 

    79 private:

    80     // disable copying

    81     Resource(const Resource&);

    82     Resource& operator = (const Resource&);

    83 };

    84 

    85 #endif // RESOURCES_H