/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2006 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));

    MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, name, -1, name_t, length);

    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: */