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annotate src/main/win32/SDL_win32_main.c @ 4142:4433ef2a1802 SDL-1.2

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We probably want to still do this for fullscreen surfaces, since we may be clearing the edges of a centered video mode or garbage left over from a mode switch.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 29 Feb 2008 14:01:45 +0000
parents 3c068a8c016f
children 8b8314cc34a6
rev   line source
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1 /*
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2 SDL_main.c, placed in the public domain by Sam Lantinga 4/13/98
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3
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4 The WinMain function -- calls your program's main() function
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5 */
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6
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9
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10 #define WIN32_LEAN_AND_MEAN
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11 #include <windows.h>
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12
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13 #ifdef _WIN32_WCE
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14 # define DIR_SEPERATOR TEXT("\\")
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15 # undef _getcwd
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16 # define _getcwd(str,len) wcscpy(str,TEXT(""))
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17 # define setbuf(f,b)
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18 # define setvbuf(w,x,y,z)
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19 # define fopen _wfopen
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20 # define freopen _wfreopen
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21 # define remove(x) DeleteFile(x)
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22 #else
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23 # define DIR_SEPERATOR TEXT("/")
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24 # include <direct.h>
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25 #endif
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26
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27 /* Include the SDL main definition header */
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28 #include "SDL.h"
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29 #include "SDL_main.h"
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30
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31 #ifdef main
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32 # ifndef _WIN32_WCE_EMULATION
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33 # undef main
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34 # endif /* _WIN32_WCE_EMULATION */
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35 #endif /* main */
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36
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37 /* The standard output files */
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38 #define STDOUT_FILE TEXT("stdout.txt")
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39 #define STDERR_FILE TEXT("stderr.txt")
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40
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41 #ifndef NO_STDIO_REDIRECT
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42 # ifdef _WIN32_WCE
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43 static wchar_t stdoutPath[MAX_PATH];
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44 static wchar_t stderrPath[MAX_PATH];
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45 # else
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46 static char stdoutPath[MAX_PATH];
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47 static char stderrPath[MAX_PATH];
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48 # endif
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49 #endif
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50
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51 #if defined(_WIN32_WCE) && _WIN32_WCE < 300
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52 /* seems to be undefined in Win CE although in online help */
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53 #define isspace(a) (((CHAR)a == ' ') || ((CHAR)a == '\t'))
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54 #endif /* _WIN32_WCE < 300 */
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55
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56 static void UnEscapeQuotes( char *arg )
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57 {
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58 char *last = NULL;
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59
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60 while( *arg ) {
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61 if( *arg == '"' && *last == '\\' ) {
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62 char *c_curr = arg;
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63 char *c_last = last;
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64
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65 while( *c_curr ) {
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66 *c_last = *c_curr;
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67 c_last = c_curr;
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68 c_curr++;
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69 }
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70 *c_last = '\0';
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71 }
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72 last = arg;
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73 arg++;
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74 }
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75 }
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76
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77 /* Parse a command line buffer into arguments */
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78 static int ParseCommandLine(char *cmdline, char **argv)
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79 {
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80 char *bufp;
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81 char *lastp = NULL;
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82 int argc, last_argc;
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83
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84 argc = last_argc = 0;
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85 for ( bufp = cmdline; *bufp; ) {
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86 /* Skip leading whitespace */
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87 while ( isspace(*bufp) ) {
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88 ++bufp;
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89 }
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90 /* Skip over argument */
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91 if ( *bufp == '"' ) {
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92 ++bufp;
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93 if ( *bufp ) {
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94 if ( argv ) {
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95 argv[argc] = bufp;
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96 }
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97 ++argc;
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98 }
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99 /* Skip over word */
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100 while ( *bufp && ( *bufp != '"' || *lastp == '\\' ) ) {
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101 lastp = bufp;
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102 ++bufp;
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103 }
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104 } else {
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105 if ( *bufp ) {
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106 if ( argv ) {
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107 argv[argc] = bufp;
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108 }
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109 ++argc;
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110 }
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111 /* Skip over word */
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112 while ( *bufp && ! isspace(*bufp) ) {
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113 ++bufp;
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114 }
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115 }
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116 if ( *bufp ) {
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117 if ( argv ) {
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118 *bufp = '\0';
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119 }
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120 ++bufp;
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121 }
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122
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123 /* Strip out \ from \" sequences */
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124 if( argv && last_argc != argc ) {
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125 UnEscapeQuotes( argv[last_argc] );
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126 }
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127 last_argc = argc;
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128 }
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129 if ( argv ) {
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130 argv[argc] = NULL;
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131 }
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132 return(argc);
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133 }
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134
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135 /* Show an error message */
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136 static void ShowError(const char *title, const char *message)
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137 {
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138 /* If USE_MESSAGEBOX is defined, you need to link with user32.lib */
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139 #ifdef USE_MESSAGEBOX
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140 MessageBox(NULL, message, title, MB_ICONEXCLAMATION|MB_OK);
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141 #else
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142 fprintf(stderr, "%s: %s\n", title, message);
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143 #endif
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144 }
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145
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146 /* Pop up an out of memory message, returns to Windows */
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147 static BOOL OutOfMemory(void)
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148 {
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149 ShowError("Fatal Error", "Out of memory - aborting");
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150 return FALSE;
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151 }
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152
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153 /* SDL_Quit() shouldn't be used with atexit() directly because
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154 calling conventions may differ... */
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155 static void cleanup(void)
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156 {
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157 SDL_Quit();
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158 }
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159
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160 /* Remove the output files if there was no output written */
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161 static void cleanup_output(void)
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162 {
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163 #ifndef NO_STDIO_REDIRECT
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164 FILE *file;
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165 int empty;
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166 #endif
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167
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168 /* Flush the output in case anything is queued */
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169 fclose(stdout);
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170 fclose(stderr);
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171
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172 #ifndef NO_STDIO_REDIRECT
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173 /* See if the files have any output in them */
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174 if ( stdoutPath[0] ) {
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175 file = fopen(stdoutPath, TEXT("rb"));
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176 if ( file ) {
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177 empty = (fgetc(file) == EOF) ? 1 : 0;
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178 fclose(file);
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179 if ( empty ) {
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180 remove(stdoutPath);
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181 }
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182 }
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183 }
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184 if ( stderrPath[0] ) {
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185 file = fopen(stderrPath, TEXT("rb"));
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186 if ( file ) {
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187 empty = (fgetc(file) == EOF) ? 1 : 0;
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188 fclose(file);
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189 if ( empty ) {
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190 remove(stderrPath);
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191 }
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192 }
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193 }
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194 #endif
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195 }
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196
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197 #if defined(_MSC_VER) && !defined(_WIN32_WCE)
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198 /* The VC++ compiler needs main defined */
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199 #define console_main main
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200 #endif
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201
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202 /* This is where execution begins [console apps] */
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203 int console_main(int argc, char *argv[])
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204 {
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205 size_t n;
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206 char *bufp, *appname;
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207 int status;
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208
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209 /* Get the class name from argv[0] */
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210 appname = argv[0];
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211 if ( (bufp=SDL_strrchr(argv[0], '\\')) != NULL ) {
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212 appname = bufp+1;
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213 } else
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214 if ( (bufp=SDL_strrchr(argv[0], '/')) != NULL ) {
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215 appname = bufp+1;
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216 }
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217
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218 if ( (bufp=SDL_strrchr(appname, '.')) == NULL )
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219 n = SDL_strlen(appname);
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220 else
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221 n = (bufp-appname);
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222
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223 bufp = SDL_stack_alloc(char, n+1);
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224 if ( bufp == NULL ) {
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225 return OutOfMemory();
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226 }
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227 SDL_strlcpy(bufp, appname, n+1);
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228 appname = bufp;
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229
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230 /* Load SDL dynamic link library */
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231 if ( SDL_Init(SDL_INIT_NOPARACHUTE) < 0 ) {
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232 ShowError("WinMain() error", SDL_GetError());
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233 return(FALSE);
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234 }
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235 atexit(cleanup_output);
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236 atexit(cleanup);
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237
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238 /* Sam:
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239 We still need to pass in the application handle so that
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240 DirectInput will initialize properly when SDL_RegisterApp()
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241 is called later in the video initialization.
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242 */
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243 SDL_SetModuleHandle(GetModuleHandle(NULL));
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244
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245 /* Run the application main() code */
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246 status = SDL_main(argc, argv);
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247
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248 /* Exit cleanly, calling atexit() functions */
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249 exit(status);
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250
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251 /* Hush little compiler, don't you cry... */
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252 return 0;
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253 }
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254
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255 /* This is where execution begins [windowed apps] */
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256 #ifdef _WIN32_WCE
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257 int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPWSTR szCmdLine, int sw)
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258 #else
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259 int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw)
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260 #endif
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261 {
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262 HINSTANCE handle;
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263 char **argv;
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264 int argc;
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265 char *cmdline;
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266 #ifdef _WIN32_WCE
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267 wchar_t *bufp;
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268 int nLen;
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269 #else
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270 char *bufp;
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271 size_t nLen;
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272 #endif
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273 #ifndef NO_STDIO_REDIRECT
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274 DWORD pathlen;
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275 #ifdef _WIN32_WCE
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276 wchar_t path[MAX_PATH];
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277 #else
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278 char path[MAX_PATH];
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279 #endif
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280 FILE *newfp;
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281 #endif
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282
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283 /* Start up DDHELP.EXE before opening any files, so DDHELP doesn't
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284 keep them open. This is a hack.. hopefully it will be fixed
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285 someday. DDHELP.EXE starts up the first time DDRAW.DLL is loaded.
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286 */
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287 handle = LoadLibrary(TEXT("DDRAW.DLL"));
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288 if ( handle != NULL ) {
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289 FreeLibrary(handle);
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290 }
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291
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292 #ifndef NO_STDIO_REDIRECT
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293 pathlen = GetModuleFileName(NULL, path, SDL_arraysize(path));
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294 while ( pathlen > 0 && path[pathlen] != '\\' ) {
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295 --pathlen;
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296 }
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297 path[pathlen] = '\0';
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298
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299 #ifdef _WIN32_WCE
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300 wcsncpy( stdoutPath, path, SDL_arraysize(stdoutPath) );
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301 wcsncat( stdoutPath, DIR_SEPERATOR STDOUT_FILE, SDL_arraysize(stdoutPath) );
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302 #else
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303 SDL_strlcpy( stdoutPath, path, SDL_arraysize(stdoutPath) );
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304 SDL_strlcat( stdoutPath, DIR_SEPERATOR STDOUT_FILE, SDL_arraysize(stdoutPath) );
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305 #endif
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306
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307 /* Redirect standard input and standard output */
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308 newfp = freopen(stdoutPath, TEXT("w"), stdout);
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309
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310 #ifndef _WIN32_WCE
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311 if ( newfp == NULL ) { /* This happens on NT */
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312 #if !defined(stdout)
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313 stdout = fopen(stdoutPath, TEXT("w"));
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314 #else
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315 newfp = fopen(stdoutPath, TEXT("w"));
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316 if ( newfp ) {
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317 *stdout = *newfp;
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318 }
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319 #endif
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320 }
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321 #endif /* _WIN32_WCE */
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322
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323 #ifdef _WIN32_WCE
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324 wcsncpy( stderrPath, path, SDL_arraysize(stdoutPath) );
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325 wcsncat( stderrPath, DIR_SEPERATOR STDOUT_FILE, SDL_arraysize(stdoutPath) );
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326 #else
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327 SDL_strlcpy( stderrPath, path, SDL_arraysize(stderrPath) );
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328 SDL_strlcat( stderrPath, DIR_SEPERATOR STDERR_FILE, SDL_arraysize(stderrPath) );
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329 #endif
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330
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331 newfp = freopen(stderrPath, TEXT("w"), stderr);
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332 #ifndef _WIN32_WCE
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333 if ( newfp == NULL ) { /* This happens on NT */
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334 #if !defined(stderr)
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335 stderr = fopen(stderrPath, TEXT("w"));
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336 #else
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337 newfp = fopen(stderrPath, TEXT("w"));
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338 if ( newfp ) {
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339 *stderr = *newfp;
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340 }
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341 #endif
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342 }
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343 #endif /* _WIN32_WCE */
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344
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345 setvbuf(stdout, NULL, _IOLBF, BUFSIZ); /* Line buffered */
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346 setbuf(stderr, NULL); /* No buffering */
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347 #endif /* !NO_STDIO_REDIRECT */
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348
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349 #ifdef _WIN32_WCE
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350 nLen = wcslen(szCmdLine)+128+1;
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351 bufp = SDL_stack_alloc(wchar_t, nLen*2);
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352 wcscpy (bufp, TEXT("\""));
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353 GetModuleFileName(NULL, bufp+1, 128-3);
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354 wcscpy (bufp+wcslen(bufp), TEXT("\" "));
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355 wcsncpy(bufp+wcslen(bufp), szCmdLine,nLen-wcslen(bufp));
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356 nLen = wcslen(bufp)+1;
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357 cmdline = SDL_stack_alloc(char, nLen);
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358 if ( cmdline == NULL ) {
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359 return OutOfMemory();
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360 }
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361 WideCharToMultiByte(CP_ACP, 0, bufp, -1, cmdline, nLen, NULL, NULL);
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362 #else
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363 /* Grab the command line */
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364 bufp = GetCommandLine();
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365 nLen = SDL_strlen(bufp)+1;
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366 cmdline = SDL_stack_alloc(char, nLen);
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367 if ( cmdline == NULL ) {
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368 return OutOfMemory();
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369 }
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370 SDL_strlcpy(cmdline, bufp, nLen);
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371 #endif
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372
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373 /* Parse it into argv and argc */
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374 argc = ParseCommandLine(cmdline, NULL);
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375 argv = SDL_stack_alloc(char*, argc+1);
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376 if ( argv == NULL ) {
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377 return OutOfMemory();
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378 }
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379 ParseCommandLine(cmdline, argv);
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380
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381 /* Run the main program (after a little SDL initialization) */
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382 console_main(argc, argv);
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383
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384 /* Hush little compiler, don't you cry... */
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385 return 0;
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386 }