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annotate src/main/win32/SDL_win32_main.c @ 1379:c0a74f199ecf

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Use only safe string functions
author Sam Lantinga <slouken@libsdl.org>
date Sun, 19 Feb 2006 23:46:34 +0000
parents 19418e4422cb
children 4ed717f9e509
rev   line source
754
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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 #include "SDL_windows.h"
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11
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12 #ifdef _WIN32_WCE
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13 # define DIR_SEPERATOR TEXT("\\")
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14 # undef _getcwd
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15 # define _getcwd(str,len) wcscpy(str,TEXT(""))
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16 # define setbuf(f,b)
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17 # define setvbuf(w,x,y,z)
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18 # define fopen _wfopen
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19 # define freopen _wfreopen
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20 # define remove(x) DeleteFile(x)
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21 #else
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22 # define DIR_SEPERATOR TEXT("/")
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23 # include <direct.h>
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24 #endif
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25
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26 /* Include the SDL main definition header */
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27 #include "SDL.h"
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28 #include "SDL_main.h"
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29
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30 #ifdef main
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31 # ifndef _WIN32_WCE_EMULATION
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32 # undef main
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33 # endif /* _WIN32_WCE_EMULATION */
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34 #endif /* main */
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35
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36 /* The standard output files */
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37 #define STDOUT_FILE TEXT("stdout.txt")
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38 #define STDERR_FILE TEXT("stderr.txt")
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39
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40 #ifndef NO_STDIO_REDIRECT
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41 # ifdef _WIN32_WCE
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42 static wchar_t stdoutPath[MAX_PATH];
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43 static wchar_t stderrPath[MAX_PATH];
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44 # else
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45 static char stdoutPath[MAX_PATH];
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46 static char stderrPath[MAX_PATH];
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47 # endif
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48 #endif
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49
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50 #if defined(_WIN32_WCE) && _WIN32_WCE < 300
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51 /* seems to be undefined in Win CE although in online help */
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52 #define isspace(a) (((CHAR)a == ' ') || ((CHAR)a == '\t'))
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53
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54 /* seems to be undefined in Win CE although in online help */
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55 char *SDL_strrchr(char *str, int c)
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56 {
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57 char *p;
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58
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59 /* Skip to the end of the string */
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60 p=str;
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61 while (*p)
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62 p++;
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63
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64 /* Look for the given character */
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65 while ( (p >= str) && (*p != (CHAR)c) )
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66 p--;
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67
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68 /* Return NULL if character not found */
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69 if ( p < str ) {
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70 p = NULL;
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71 }
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72 return p;
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73 }
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74 #endif /* _WIN32_WCE < 300 */
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75
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76 /* Parse a command line buffer into arguments */
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77 static int ParseCommandLine(char *cmdline, char **argv)
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78 {
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79 char *bufp;
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80 int argc;
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81
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82 argc = 0;
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83 for ( bufp = cmdline; *bufp; ) {
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84 /* Skip leading whitespace */
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85 while ( isspace(*bufp) ) {
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86 ++bufp;
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87 }
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88 /* Skip over argument */
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89 if ( *bufp == '"' ) {
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90 ++bufp;
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91 if ( *bufp ) {
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92 if ( argv ) {
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93 argv[argc] = bufp;
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94 }
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95 ++argc;
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96 }
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97 /* Skip over word */
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98 while ( *bufp && (*bufp != '"') ) {
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99 ++bufp;
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100 }
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101 } else {
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102 if ( *bufp ) {
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103 if ( argv ) {
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104 argv[argc] = bufp;
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105 }
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106 ++argc;
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107 }
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108 /* Skip over word */
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109 while ( *bufp && ! isspace(*bufp) ) {
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110 ++bufp;
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111 }
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112 }
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113 if ( *bufp ) {
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114 if ( argv ) {
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115 *bufp = '\0';
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116 }
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117 ++bufp;
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118 }
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119 }
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120 if ( argv ) {
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121 argv[argc] = NULL;
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122 }
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123 return(argc);
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124 }
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125
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126 /* Show an error message */
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127 static void ShowError(const char *title, const char *message)
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128 {
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129 /* If USE_MESSAGEBOX is defined, you need to link with user32.lib */
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130 #ifdef USE_MESSAGEBOX
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131 MessageBox(NULL, message, title, MB_ICONEXCLAMATION|MB_OK);
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132 #else
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133 fprintf(stderr, "%s: %s\n", title, message);
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134 #endif
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135 }
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136
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137 /* Pop up an out of memory message, returns to Windows */
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138 static BOOL OutOfMemory(void)
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139 {
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140 ShowError("Fatal Error", "Out of memory - aborting");
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141 return FALSE;
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142 }
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143
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144 /* Remove the output files if there was no output written */
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145 static void __cdecl cleanup_output(void)
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146 {
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147 #ifndef NO_STDIO_REDIRECT
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148 FILE *file;
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149 int empty;
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150 #endif
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151
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152 /* Flush the output in case anything is queued */
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153 fclose(stdout);
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154 fclose(stderr);
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155
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156 #ifndef NO_STDIO_REDIRECT
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157 /* See if the files have any output in them */
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158 if ( stdoutPath[0] ) {
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159 file = fopen(stdoutPath, TEXT("rb"));
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160 if ( file ) {
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161 empty = (fgetc(file) == EOF) ? 1 : 0;
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162 fclose(file);
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163 if ( empty ) {
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164 remove(stdoutPath);
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165 }
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166 }
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167 }
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168 if ( stderrPath[0] ) {
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169 file = fopen(stderrPath, TEXT("rb"));
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170 if ( file ) {
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171 empty = (fgetc(file) == EOF) ? 1 : 0;
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172 fclose(file);
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173 if ( empty ) {
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174 remove(stderrPath);
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175 }
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176 }
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177 }
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178 #endif
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179 }
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180
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181 #if defined(_MSC_VER) && !defined(_WIN32_WCE)
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182 /* The VC++ compiler needs main defined */
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183 #define console_main main
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184 #endif
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185
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186 /* This is where execution begins [console apps] */
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187 int console_main(int argc, char *argv[])
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188 {
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189 int n;
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190 char *bufp, *appname;
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191
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192 /* Get the class name from argv[0] */
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193 appname = argv[0];
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194 if ( (bufp=SDL_strrchr(argv[0], '\\')) != NULL ) {
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195 appname = bufp+1;
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196 } else
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197 if ( (bufp=SDL_strrchr(argv[0], '/')) != NULL ) {
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198 appname = bufp+1;
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199 }
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200
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201 if ( (bufp=SDL_strrchr(appname, '.')) == NULL )
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202 n = SDL_strlen(appname);
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203 else
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204 n = (bufp-appname);
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205
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206 bufp = (char *)alloca(n+1);
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207 if ( bufp == NULL ) {
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208 return OutOfMemory();
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209 }
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210 SDL_strlcpy(bufp, appname, n);
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211 appname = bufp;
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212
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213 /* Load SDL dynamic link library */
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214 if ( SDL_Init(SDL_INIT_NOPARACHUTE) < 0 ) {
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215 ShowError("WinMain() error", SDL_GetError());
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216 return(FALSE);
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217 }
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218 atexit(cleanup_output);
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219 atexit(SDL_Quit);
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220
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221 /* Sam:
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222 We still need to pass in the application handle so that
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223 DirectInput will initialize properly when SDL_RegisterApp()
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224 is called later in the video initialization.
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225 */
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226 SDL_SetModuleHandle(GetModuleHandle(NULL));
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227
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228 /* Run the application main() code */
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229 SDL_main(argc, argv);
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230
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231 /* Exit cleanly, calling atexit() functions */
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232 exit(0);
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233
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234 /* Hush little compiler, don't you cry... */
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235 return(0);
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236 }
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237
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238 /* This is where execution begins [windowed apps] */
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239 #ifdef _WIN32_WCE
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240 int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPWSTR szCmdLine, int sw)
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241 #else
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242 int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw)
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243 #endif
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244 {
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245 HINSTANCE handle;
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246 char **argv;
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247 int argc;
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248 char *cmdline;
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249 DWORD pathlen;
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250 #ifdef _WIN32_WCE
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251 wchar_t path[MAX_PATH];
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252 #else
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253 char path[MAX_PATH];
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254 #endif
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255 #ifdef _WIN32_WCE
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256 wchar_t *bufp;
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257 int nLen;
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258 #else
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259 char *bufp;
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260 size_t nLen;
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261 #endif
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262 #ifndef NO_STDIO_REDIRECT
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263 FILE *newfp;
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264 #endif
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265 int retval;
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266
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267 /* Start up DDHELP.EXE before opening any files, so DDHELP doesn't
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268 keep them open. This is a hack.. hopefully it will be fixed
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269 someday. DDHELP.EXE starts up the first time DDRAW.DLL is loaded.
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270 */
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271 handle = LoadLibrary(TEXT("DDRAW.DLL"));
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272 if ( handle != NULL ) {
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273 FreeLibrary(handle);
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274 }
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275
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276 #ifndef NO_STDIO_REDIRECT
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277 pathlen = GetModuleFileName(NULL, path, SDL_arraysize(path));
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278 while ( pathlen > 0 && path[pathlen] != '\\' ) {
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279 --pathlen;
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280 }
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281 path[pathlen] = '\0';
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282
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283 SDL_strlcpy( stdoutPath, path, SDL_arraysize(stdoutPath) );
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284 SDL_strlcat( stdoutPath, DIR_SEPERATOR STDOUT_FILE, SDL_arraysize(stdoutPath) );
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285
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286 /* Redirect standard input and standard output */
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287 newfp = freopen(stdoutPath, TEXT("w"), stdout);
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288
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289 #ifndef _WIN32_WCE
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290 if ( newfp == NULL ) { /* This happens on NT */
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291 #if !defined(stdout)
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292 stdout = fopen(stdoutPath, TEXT("w"));
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293 #else
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294 newfp = fopen(stdoutPath, TEXT("w"));
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295 if ( newfp ) {
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296 *stdout = *newfp;
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297 }
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298 #endif
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299 }
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300 #endif /* _WIN32_WCE */
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301
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302 SDL_strlcpy( stderrPath, path, SDL_arraysize(stderrPath) );
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303 SDL_strlcat( stderrPath, DIR_SEPERATOR STDERR_FILE, SDL_arraysize(stderrPath) );
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304
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305 newfp = freopen(stderrPath, TEXT("w"), stderr);
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306 #ifndef _WIN32_WCE
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307 if ( newfp == NULL ) { /* This happens on NT */
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308 #if !defined(stderr)
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309 stderr = fopen(stderrPath, TEXT("w"));
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310 #else
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311 newfp = fopen(stderrPath, TEXT("w"));
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312 if ( newfp ) {
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313 *stderr = *newfp;
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314 }
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315 #endif
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316 }
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317 #endif /* _WIN32_WCE */
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318
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319 setvbuf(stdout, NULL, _IOLBF, BUFSIZ); /* Line buffered */
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320 setbuf(stderr, NULL); /* No buffering */
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321 #endif /* !NO_STDIO_REDIRECT */
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322
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323 #ifdef _WIN32_WCE
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324 nLen = wcslen(szCmdLine)+128+1;
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325 bufp = (wchar_t *)alloca(nLen*2);
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326 wcscpy (bufp, TEXT("\""));
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327 GetModuleFileName(NULL, bufp+1, 128-3);
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328 wcscpy (bufp+wcslen(bufp), TEXT("\" "));
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329 wcsncpy(bufp+wcslen(bufp), szCmdLine,nLen-wcslen(bufp));
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330 nLen = wcslen(bufp)+1;
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331 cmdline = SDL_stack_alloc(wchar_t, nLen);
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332 if ( cmdline == NULL ) {
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333 return OutOfMemory();
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334 }
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335 WideCharToMultiByte(CP_ACP, 0, bufp, -1, cmdline, nLen, NULL, NULL);
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336 #else
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337 /* Grab the command line (use alloca() on Windows) */
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338 bufp = GetCommandLine();
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339 nLen = SDL_strlen(bufp)+1;
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340 cmdline = SDL_stack_alloc(char, nLen);
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341 if ( cmdline == NULL ) {
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342 return OutOfMemory();
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343 }
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344 SDL_strlcpy(cmdline, bufp, nLen);
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345 #endif
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346
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347 /* Parse it into argv and argc */
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348 argc = ParseCommandLine(cmdline, NULL);
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349 argv = SDL_stack_alloc(char*, argc+1);
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350 if ( argv == NULL ) {
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351 return OutOfMemory();
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352 }
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353 ParseCommandLine(cmdline, argv);
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354
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355 /* Run the main program (after a little SDL initialization) */
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356 retval = console_main(argc, argv);
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357
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358 SDL_stack_free(cmdline);
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359 SDL_stack_free(argv);
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360 return retval;
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361 }