/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2009 Sam Lantinga

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 of the License, or (at your option) any later version.

    This library 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

    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public

    License along with this library; if not, write to the Free Software

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

    Sam Lantinga

    slouken@libsdl.org

*/

#include "SDL_config.h"

#ifdef SDL_LOADSO_WIN32

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/* System dependent library loading routines                           */

#define WIN32_LEAN_AND_MEAN

#include <windows.h>

#include "SDL_loadso.h"

void *

SDL_LoadObject(const char *sofile)

{

    void *handle = NULL;

    const char *loaderror = "Unknown error";

#if defined(_WIN32_WCE)

    char errbuf[512];

    wchar_t *errbuf_t = SDL_malloc(512 * sizeof(wchar_t));

    wchar_t *sofile_t = SDL_malloc((MAX_PATH + 1) * sizeof(wchar_t));

    MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, sofile, -1, sofile_t,

                        MAX_PATH);

    handle = (void *) LoadLibrary(sofile_t);

    /* Generate an error message if all loads failed */

    if (handle == NULL) {

        FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |

                       FORMAT_MESSAGE_FROM_SYSTEM),

                      NULL, GetLastError(),

                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),

                      errbuf_t, SDL_arraysize(errbuf), NULL);

        WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);

        loaderror = errbuf;

    }

    SDL_free(sofile_t);

    SDL_free(errbuf_t);

#else /*if defined(__WIN32__) */

    char errbuf[512];

    handle = (void *) LoadLibrary(sofile);

    /* Generate an error message if all loads failed */

    if (handle == NULL) {

        FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |

                       FORMAT_MESSAGE_FROM_SYSTEM),

                      NULL, GetLastError(),

                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),

                      errbuf, SDL_arraysize(errbuf), NULL);

        loaderror = errbuf;

    }

#endif

    if (handle == NULL) {

        SDL_SetError("Failed loading %s: %s", sofile, loaderror);

    }

    return (handle);

}

void *

SDL_LoadFunction(void *handle, const char *name)

{

    void *symbol = NULL;

    const char *loaderror = "Unknown error";

#if defined(_WIN32_WCE)

    char errbuf[512];

    int length = SDL_strlen(name);

    wchar_t *name_t = SDL_malloc((length + 1) * sizeof(wchar_t));

    wchar_t *errbuf_t = SDL_malloc(512 * sizeof(wchar_t));

    symbol = (void *) GetProcAddress((HMODULE) handle, name_t);

    if (symbol == NULL) {

        FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |

                       FORMAT_MESSAGE_FROM_SYSTEM),

                      NULL, GetLastError(),

                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),

                      errbuf_t, SDL_arraysize(errbuf), NULL);

        WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);

        loaderror = errbuf;

    }

    SDL_free(name_t);

    SDL_free(errbuf_t);

#else /*if defined(WIN32) */

    char errbuf[512];

    symbol = (void *) GetProcAddress((HMODULE) handle, name);

    if (symbol == NULL) {

        FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |

                       FORMAT_MESSAGE_FROM_SYSTEM),

                      NULL, GetLastError(),

                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),

                      errbuf, SDL_arraysize(errbuf), NULL);

        loaderror = errbuf;

    }

#endif

    if (symbol == NULL) {

        SDL_SetError("Failed loading %s: %s", name, loaderror);

    }

    return (symbol);

}

void

SDL_UnloadObject(void *handle)

{

    if (handle != NULL) {

        FreeLibrary((HMODULE) handle);

    }

}

#endif /* SDL_LOADSO_WIN32 */

/* vi: set ts=4 sw=4 expandtab: */