/*

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

 * 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.

 */

#ifndef RESOURCES_H

#define RESOURCES_H

#include "WinSysInfo.h"

/**

 * Classes for resource loading.

 * Common use cases:

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

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

 *      if (res.available()) {

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

 *      }

 */

class Resource {

public:

    // name and type can be specified by string id, by integer id (RT_* constants or MAKEINTRESOURCE)

    Resource(LPCWSTR name, LPCWSTR type, HINSTANCE module = SysInfo::getCurrentModuleHandle());

    Resource(UINT id, LPCWSTR type, HINSTANCE module = SysInfo::getCurrentModuleHandle());

    bool available() const;

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

    unsigned size() const;

    // gets raw pointer to the resource data

    LPCVOID rawData() const;

    // save the resource to a file

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

    typedef std::vector<BYTE> ByteArray;

    // returns the resource as byte array

    ByteArray binary() const;

private:

    std::wstring nameStr;

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

    std::wstring typeStr;

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

    HINSTANCE instance;

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

    // generates error message

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

    HRSRC findResource() const;

    LPVOID getPtr(DWORD &size) const;

private:

    // disable copying

    Resource(const Resource&);

    Resource& operator = (const Resource&);

};

#endif // RESOURCES_H