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annotate src/loadso/windows/SDL_loadso.c @ 1183:634d85aefc8c

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Fixed bug reported here: http://www.devolution.com/pipermail/sdl/2005-October/070998.html --ryan.
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 22 Nov 2005 09:59:42 +0000
parents e9cf8c1b4590
children c9b51268668f
rev   line source
1173
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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29 /* System dependent library loading routines */
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30
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31 #if !SDL_INTERNAL_BUILDING_LOADSO
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32 #error Do not compile directly...compile src/SDL_loadso.c instead!
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33 #endif
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34
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35 #if !defined(WIN32) && !defined(_WIN32_WCE)
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36 #error Compiling for the wrong platform?
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37 #endif
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38
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39 #include <stdio.h>
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40 #include <windows.h>
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41
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42 #include "SDL_types.h"
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43 #include "SDL_error.h"
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44 #include "SDL_loadso.h"
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45
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46 void *SDL_LoadObject(const char *sofile)
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47 {
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48 void *handle = NULL;
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49 const char *loaderror = "Unknown error";
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50
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51 #if defined(_WIN32_WCE)
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52 char errbuf[512];
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53
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54 wchar_t *errbuf_t = malloc(512 * sizeof(wchar_t));
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55 wchar_t *sofile_t = malloc((MAX_PATH+1) * sizeof(wchar_t));
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56
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57 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, sofile, -1, sofile_t, MAX_PATH);
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58 handle = (void *)LoadLibrary(sofile_t);
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59
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60 /* Generate an error message if all loads failed */
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61 if ( handle == NULL ) {
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62 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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63 FORMAT_MESSAGE_FROM_SYSTEM),
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64 NULL, GetLastError(),
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65 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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66 errbuf_t, SDL_TABLESIZE(errbuf), NULL);
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67 WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);
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68 loaderror = errbuf;
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69 }
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70
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71 free(sofile_t);
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72 free(errbuf_t);
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73
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74 #else /*if defined(WIN32)*/
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75 char errbuf[512];
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76
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77 handle = (void *)LoadLibrary(sofile);
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78
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79 /* Generate an error message if all loads failed */
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80 if ( handle == NULL ) {
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81 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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82 FORMAT_MESSAGE_FROM_SYSTEM),
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83 NULL, GetLastError(),
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84 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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85 errbuf, SDL_TABLESIZE(errbuf), NULL);
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86 loaderror = errbuf;
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87 }
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88 #endif
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89
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90 if ( handle == NULL ) {
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91 SDL_SetError("Failed loading %s: %s", sofile, loaderror);
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92 }
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93 return(handle);
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94 }
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95
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96 void *SDL_LoadFunction(void *handle, const char *name)
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97 {
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98 void *symbol = NULL;
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99 const char *loaderror = "Unknown error";
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100
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101 #if defined(_WIN32_WCE)
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102 char errbuf[512];
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103 int length = strlen(name);
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104
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105 wchar_t *name_t = malloc((length + 1) * sizeof(wchar_t));
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106 wchar_t *errbuf_t = malloc(512 * sizeof(wchar_t));
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107
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108 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, name, -1, name_t, length);
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109
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110 symbol = (void *)GetProcAddress((HMODULE)handle, name_t);
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111 if ( symbol == NULL ) {
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112 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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113 FORMAT_MESSAGE_FROM_SYSTEM),
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114 NULL, GetLastError(),
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115 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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116 errbuf_t, SDL_TABLESIZE(errbuf), NULL);
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117 WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);
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118 loaderror = errbuf;
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119 }
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120
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121 free(name_t);
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122 free(errbuf_t);
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123
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124 #else /*if defined(WIN32)*/
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125 char errbuf[512];
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126
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127 symbol = (void *)GetProcAddress((HMODULE)handle, name);
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128 if ( symbol == NULL ) {
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129 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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130 FORMAT_MESSAGE_FROM_SYSTEM),
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131 NULL, GetLastError(),
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132 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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133 errbuf, SDL_TABLESIZE(errbuf), NULL);
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134 loaderror = errbuf;
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135 }
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136 #endif
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137
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138 if ( symbol == NULL ) {
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139 SDL_SetError("Failed loading %s: %s", name, loaderror);
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140 }
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141 return(symbol);
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142 }
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143
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144 void SDL_UnloadObject(void *handle)
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145 {
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146 if ( handle != NULL ) {
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147 FreeLibrary((HMODULE)handle);
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148 }
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149 }
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150