src/loadso/windows/SDL_loadso.c
author Ryan C. Gordon <icculus@icculus.org>
Thu, 17 Nov 2005 03:15:05 +0000
changeset 1173 e9cf8c1b4590
child 1312 c9b51268668f
permissions -rw-r--r--
Split up src/SDL_loadso.c into platform directories.
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2004 Sam Lantinga
     4 
     5     This library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Library General Public
     7     License as published by the Free Software Foundation; either
     8     version 2 of the License, or (at your option) any later version.
     9 
    10     This library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Library General Public License for more details.
    14 
    15     You should have received a copy of the GNU Library General Public
    16     License along with this library; if not, write to the Free
    17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    18 
    19     Sam Lantinga
    20     slouken@libsdl.org
    21 */
    22 
    23 #ifdef SAVE_RCSID
    24 static char rcsid =
    25  "@(#) $Id$";
    26 #endif
    27 
    28 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
    29 /* System dependent library loading routines                           */
    30 
    31 #if !SDL_INTERNAL_BUILDING_LOADSO
    32 #error Do not compile directly...compile src/SDL_loadso.c instead!
    33 #endif
    34 
    35 #if !defined(WIN32) && !defined(_WIN32_WCE)
    36 #error Compiling for the wrong platform?
    37 #endif
    38 
    39 #include <stdio.h>
    40 #include <windows.h>
    41 
    42 #include "SDL_types.h"
    43 #include "SDL_error.h"
    44 #include "SDL_loadso.h"
    45 
    46 void *SDL_LoadObject(const char *sofile)
    47 {
    48 	void *handle = NULL;
    49 	const char *loaderror = "Unknown error";
    50 
    51 #if defined(_WIN32_WCE)
    52 	char errbuf[512];
    53 
    54 	wchar_t *errbuf_t = malloc(512 * sizeof(wchar_t));
    55 	wchar_t *sofile_t = malloc((MAX_PATH+1) * sizeof(wchar_t));
    56 
    57 	MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, sofile, -1, sofile_t, MAX_PATH);
    58 	handle = (void *)LoadLibrary(sofile_t);
    59 
    60 	/* Generate an error message if all loads failed */
    61 	if ( handle == NULL ) {
    62 		FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
    63 					FORMAT_MESSAGE_FROM_SYSTEM),
    64 				NULL, GetLastError(), 
    65 				MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
    66 				errbuf_t, SDL_TABLESIZE(errbuf), NULL);
    67 		WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);
    68 		loaderror = errbuf;
    69 	}
    70 
    71 	free(sofile_t);
    72 	free(errbuf_t);
    73 
    74 #else /*if defined(WIN32)*/
    75 	char errbuf[512];
    76 
    77 	handle = (void *)LoadLibrary(sofile);
    78 
    79 	/* Generate an error message if all loads failed */
    80 	if ( handle == NULL ) {
    81 		FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
    82 					FORMAT_MESSAGE_FROM_SYSTEM),
    83 				NULL, GetLastError(), 
    84 				MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
    85 				errbuf, SDL_TABLESIZE(errbuf), NULL);
    86 		loaderror = errbuf;
    87 	}
    88 #endif
    89 
    90 	if ( handle == NULL ) {
    91 		SDL_SetError("Failed loading %s: %s", sofile, loaderror);
    92 	}
    93 	return(handle);
    94 }
    95 
    96 void *SDL_LoadFunction(void *handle, const char *name)
    97 {
    98 	void *symbol = NULL;
    99 	const char *loaderror = "Unknown error";
   100 
   101 #if defined(_WIN32_WCE)
   102 	char errbuf[512];
   103 	int length = strlen(name);
   104 
   105 	wchar_t *name_t = malloc((length + 1) * sizeof(wchar_t));
   106 	wchar_t *errbuf_t = malloc(512 * sizeof(wchar_t));
   107 
   108 	MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, name, -1, name_t, length);
   109 
   110 	symbol = (void *)GetProcAddress((HMODULE)handle, name_t);
   111 	if ( symbol == NULL ) {
   112 		FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
   113 					FORMAT_MESSAGE_FROM_SYSTEM),
   114 				NULL, GetLastError(), 
   115 				MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
   116 				errbuf_t, SDL_TABLESIZE(errbuf), NULL);
   117 		WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);
   118 		loaderror = errbuf;
   119 	}
   120 
   121 	free(name_t);
   122 	free(errbuf_t);
   123 
   124 #else /*if defined(WIN32)*/
   125 	char errbuf[512];
   126 
   127 	symbol = (void *)GetProcAddress((HMODULE)handle, name);
   128 	if ( symbol == NULL ) {
   129 		FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
   130 					FORMAT_MESSAGE_FROM_SYSTEM),
   131 				NULL, GetLastError(), 
   132 				MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
   133 				errbuf, SDL_TABLESIZE(errbuf), NULL);
   134 		loaderror = errbuf;
   135 	}
   136 #endif
   137 
   138 	if ( symbol == NULL ) {
   139 		SDL_SetError("Failed loading %s: %s", name, loaderror);
   140 	}
   141 	return(symbol);
   142 }
   143 
   144 void SDL_UnloadObject(void *handle)
   145 {
   146 	if ( handle != NULL ) {
   147 		FreeLibrary((HMODULE)handle);
   148 	}
   149 }
   150