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annotate src/loadso/windows/SDL_loadso.c @ 1313:09f0e1634b6d

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author Sam Lantinga <slouken@libsdl.org>
date Wed, 01 Feb 2006 07:12:14 +0000
parents c9b51268668f
children 450721ad5436
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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24 /* System dependent library loading routines */
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25
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26 #if !SDL_INTERNAL_BUILDING_LOADSO
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27 #error Do not compile directly...compile src/SDL_loadso.c instead!
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28 #endif
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29
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30 #if !defined(WIN32) && !defined(_WIN32_WCE)
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31 #error Compiling for the wrong platform?
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32 #endif
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33
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34 #include <stdio.h>
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35 #include <windows.h>
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36
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37 #include "SDL_types.h"
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38 #include "SDL_error.h"
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39 #include "SDL_loadso.h"
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40
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41 void *SDL_LoadObject(const char *sofile)
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42 {
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43 void *handle = NULL;
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44 const char *loaderror = "Unknown error";
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45
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46 #if defined(_WIN32_WCE)
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47 char errbuf[512];
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48
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49 wchar_t *errbuf_t = malloc(512 * sizeof(wchar_t));
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50 wchar_t *sofile_t = malloc((MAX_PATH+1) * sizeof(wchar_t));
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51
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52 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, sofile, -1, sofile_t, MAX_PATH);
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53 handle = (void *)LoadLibrary(sofile_t);
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54
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55 /* Generate an error message if all loads failed */
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56 if ( handle == NULL ) {
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57 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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58 FORMAT_MESSAGE_FROM_SYSTEM),
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59 NULL, GetLastError(),
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60 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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61 errbuf_t, SDL_TABLESIZE(errbuf), NULL);
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62 WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);
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63 loaderror = errbuf;
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64 }
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65
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66 free(sofile_t);
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67 free(errbuf_t);
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68
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69 #else /*if defined(WIN32)*/
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70 char errbuf[512];
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71
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72 handle = (void *)LoadLibrary(sofile);
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73
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74 /* Generate an error message if all loads failed */
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75 if ( handle == NULL ) {
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76 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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77 FORMAT_MESSAGE_FROM_SYSTEM),
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78 NULL, GetLastError(),
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79 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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80 errbuf, SDL_TABLESIZE(errbuf), NULL);
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81 loaderror = errbuf;
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82 }
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83 #endif
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84
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85 if ( handle == NULL ) {
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86 SDL_SetError("Failed loading %s: %s", sofile, loaderror);
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87 }
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88 return(handle);
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89 }
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90
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91 void *SDL_LoadFunction(void *handle, const char *name)
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92 {
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93 void *symbol = NULL;
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94 const char *loaderror = "Unknown error";
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95
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96 #if defined(_WIN32_WCE)
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97 char errbuf[512];
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98 int length = strlen(name);
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99
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100 wchar_t *name_t = malloc((length + 1) * sizeof(wchar_t));
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101 wchar_t *errbuf_t = malloc(512 * sizeof(wchar_t));
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102
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103 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, name, -1, name_t, length);
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104
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105 symbol = (void *)GetProcAddress((HMODULE)handle, name_t);
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106 if ( symbol == NULL ) {
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107 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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108 FORMAT_MESSAGE_FROM_SYSTEM),
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109 NULL, GetLastError(),
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110 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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111 errbuf_t, SDL_TABLESIZE(errbuf), NULL);
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112 WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);
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113 loaderror = errbuf;
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114 }
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115
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116 free(name_t);
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117 free(errbuf_t);
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118
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119 #else /*if defined(WIN32)*/
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120 char errbuf[512];
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121
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122 symbol = (void *)GetProcAddress((HMODULE)handle, name);
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123 if ( symbol == NULL ) {
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124 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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125 FORMAT_MESSAGE_FROM_SYSTEM),
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126 NULL, GetLastError(),
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127 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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128 errbuf, SDL_TABLESIZE(errbuf), NULL);
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129 loaderror = errbuf;
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130 }
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131 #endif
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132
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133 if ( symbol == NULL ) {
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134 SDL_SetError("Failed loading %s: %s", name, loaderror);
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135 }
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136 return(symbol);
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137 }
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138
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139 void SDL_UnloadObject(void *handle)
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140 {
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141 if ( handle != NULL ) {
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142 FreeLibrary((HMODULE)handle);
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143 }
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144 }
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145