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annotate src/main/win32/SDL_win32_main.c @ 1358:c71e05b4dc2e

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More header massaging... works great on Windows. ;-)
author Sam Lantinga <slouken@libsdl.org>
date Fri, 10 Feb 2006 06:48:43 +0000
parents 3692456e7b0f
children 19418e4422cb
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 # define strcat wcscat
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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
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55 /* seems to be undefined in Win CE although in online help */
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56 char *SDL_strrchr(char *str, int c)
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57 {
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58 char *p;
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59
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60 /* Skip to the end of the string */
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61 p=str;
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62 while (*p)
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63 p++;
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64
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65 /* Look for the given character */
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66 while ( (p >= str) && (*p != (CHAR)c) )
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67 p--;
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68
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69 /* Return NULL if character not found */
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70 if ( p < str ) {
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71 p = NULL;
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72 }
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73 return p;
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74 }
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75 #endif /* _WIN32_WCE < 300 */
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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 int argc;
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82
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83 argc = 0;
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84 for ( bufp = cmdline; *bufp; ) {
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85 /* Skip leading whitespace */
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86 while ( isspace(*bufp) ) {
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87 ++bufp;
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88 }
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89 /* Skip over argument */
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90 if ( *bufp == '"' ) {
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91 ++bufp;
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92 if ( *bufp ) {
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93 if ( argv ) {
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94 argv[argc] = bufp;
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95 }
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96 ++argc;
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97 }
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98 /* Skip over word */
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99 while ( *bufp && (*bufp != '"') ) {
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100 ++bufp;
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101 }
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102 } else {
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103 if ( *bufp ) {
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104 if ( argv ) {
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105 argv[argc] = bufp;
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106 }
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107 ++argc;
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108 }
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109 /* Skip over word */
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110 while ( *bufp && ! isspace(*bufp) ) {
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111 ++bufp;
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112 }
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113 }
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114 if ( *bufp ) {
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115 if ( argv ) {
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116 *bufp = '\0';
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117 }
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118 ++bufp;
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119 }
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120 }
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121 if ( argv ) {
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122 argv[argc] = NULL;
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123 }
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124 return(argc);
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125 }
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126
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127 /* Show an error message */
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128 static void ShowError(const char *title, const char *message)
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129 {
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130 /* If USE_MESSAGEBOX is defined, you need to link with user32.lib */
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131 #ifdef USE_MESSAGEBOX
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132 MessageBox(NULL, message, title, MB_ICONEXCLAMATION|MB_OK);
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133 #else
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134 fprintf(stderr, "%s: %s\n", title, message);
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135 #endif
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136 }
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137
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138 /* Pop up an out of memory message, returns to Windows */
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139 static BOOL OutOfMemory(void)
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140 {
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141 ShowError("Fatal Error", "Out of memory - aborting");
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142 return FALSE;
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143 }
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144
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145 /* Remove the output files if there was no output written */
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146 static void __cdecl cleanup_output(void)
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147 {
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148 #ifndef NO_STDIO_REDIRECT
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149 FILE *file;
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150 int empty;
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151 #endif
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152
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153 /* Flush the output in case anything is queued */
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154 fclose(stdout);
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155 fclose(stderr);
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156
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157 #ifndef NO_STDIO_REDIRECT
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158 /* See if the files have any output in them */
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159 if ( stdoutPath[0] ) {
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160 file = fopen(stdoutPath, TEXT("rb"));
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161 if ( file ) {
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162 empty = (fgetc(file) == EOF) ? 1 : 0;
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163 fclose(file);
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164 if ( empty ) {
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165 remove(stdoutPath);
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166 }
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167 }
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168 }
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169 if ( stderrPath[0] ) {
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170 file = fopen(stderrPath, TEXT("rb"));
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171 if ( file ) {
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172 empty = (fgetc(file) == EOF) ? 1 : 0;
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173 fclose(file);
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174 if ( empty ) {
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175 remove(stderrPath);
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176 }
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177 }
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178 }
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179 #endif
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180 }
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181
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182 #if defined(_MSC_VER) && !defined(_WIN32_WCE)
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183 /* The VC++ compiler needs main defined */
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184 #define console_main main
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185 #endif
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186
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187 /* This is where execution begins [console apps] */
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188 int console_main(int argc, char *argv[])
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189 {
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190 int n;
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191 char *bufp, *appname;
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192
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193 /* Get the class name from argv[0] */
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194 appname = argv[0];
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195 if ( (bufp=SDL_strrchr(argv[0], '\\')) != NULL ) {
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196 appname = bufp+1;
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197 } else
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198 if ( (bufp=SDL_strrchr(argv[0], '/')) != NULL ) {
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199 appname = bufp+1;
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200 }
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201
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202 if ( (bufp=SDL_strrchr(appname, '.')) == NULL )
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203 n = SDL_strlen(appname);
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204 else
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205 n = (bufp-appname);
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206
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207 bufp = (char *)alloca(n+1);
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208 if ( bufp == NULL ) {
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209 return OutOfMemory();
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210 }
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211 SDL_strncpy(bufp, appname, n);
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212 bufp[n] = '\0';
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213 appname = bufp;
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214
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215 /* Load SDL dynamic link library */
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216 if ( SDL_Init(SDL_INIT_NOPARACHUTE) < 0 ) {
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217 ShowError("WinMain() error", SDL_GetError());
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218 return(FALSE);
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219 }
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220 atexit(cleanup_output);
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221 atexit(SDL_Quit);
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222
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223 #ifndef DISABLE_VIDEO
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224 #if 0
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225 /* Create and register our class *
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226 DJM: If we do this here, the user nevers gets a chance to
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227 putenv(SDL_WINDOWID). This is already called later by
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228 the (DIB|DX5)_CreateWindow function, so it should be
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229 safe to comment it out here.
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230 if ( SDL_RegisterApp(appname, CS_BYTEALIGNCLIENT,
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231 GetModuleHandle(NULL)) < 0 ) {
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232 ShowError("WinMain() error", SDL_GetError());
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233 exit(1);
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234 }*/
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235 #else
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236 /* Sam:
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237 We still need to pass in the application handle so that
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238 DirectInput will initialize properly when SDL_RegisterApp()
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239 is called later in the video initialization.
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240 */
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241 SDL_SetModuleHandle(GetModuleHandle(NULL));
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242 #endif /* 0 */
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243 #endif /* !DISABLE_VIDEO */
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244
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245 /* Run the application main() code */
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246 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(0);
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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 DWORD pathlen;
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267 #ifdef _WIN32_WCE
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268 wchar_t path[MAX_PATH];
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269 #else
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270 char path[MAX_PATH];
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271 #endif
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272 #ifdef _WIN32_WCE
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273 wchar_t *bufp;
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274 int nLen;
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275 #else
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276 char *bufp;
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277 #endif
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278 #ifndef NO_STDIO_REDIRECT
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279 FILE *newfp;
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280 #endif
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281
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282 /* Start up DDHELP.EXE before opening any files, so DDHELP doesn't
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283 keep them open. This is a hack.. hopefully it will be fixed
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284 someday. DDHELP.EXE starts up the first time DDRAW.DLL is loaded.
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285 */
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286 handle = LoadLibrary(TEXT("DDRAW.DLL"));
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287 if ( handle != NULL ) {
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288 FreeLibrary(handle);
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289 }
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290
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291 #ifndef NO_STDIO_REDIRECT
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292 pathlen = GetModuleFileName(NULL, path, SDL_TABLESIZE(path));
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293 while ( pathlen > 0 && path[pathlen] != '\\' ) {
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294 --pathlen;
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295 }
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296 path[pathlen] = '\0';
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297
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298 SDL_strcpy( stdoutPath, path );
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299 SDL_strcat( stdoutPath, DIR_SEPERATOR STDOUT_FILE );
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300
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301 /* Redirect standard input and standard output */
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302 newfp = freopen(stdoutPath, TEXT("w"), stdout);
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303
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304 #ifndef _WIN32_WCE
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305 if ( newfp == NULL ) { /* This happens on NT */
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306 #if !defined(stdout)
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307 stdout = fopen(stdoutPath, TEXT("w"));
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308 #else
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309 newfp = fopen(stdoutPath, TEXT("w"));
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310 if ( newfp ) {
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311 *stdout = *newfp;
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312 }
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313 #endif
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314 }
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315 #endif /* _WIN32_WCE */
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316
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317 SDL_strcpy( stderrPath, path );
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318 SDL_strcat( stderrPath, DIR_SEPERATOR STDERR_FILE );
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319
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320 newfp = freopen(stderrPath, TEXT("w"), stderr);
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321 #ifndef _WIN32_WCE
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322 if ( newfp == NULL ) { /* This happens on NT */
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323 #if !defined(stderr)
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324 stderr = fopen(stderrPath, TEXT("w"));
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325 #else
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326 newfp = fopen(stderrPath, TEXT("w"));
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327 if ( newfp ) {
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328 *stderr = *newfp;
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329 }
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330 #endif
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331 }
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332 #endif /* _WIN32_WCE */
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333
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334 setvbuf(stdout, NULL, _IOLBF, BUFSIZ); /* Line buffered */
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335 setbuf(stderr, NULL); /* No buffering */
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336 #endif /* !NO_STDIO_REDIRECT */
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337
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338 #ifdef _WIN32_WCE
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339 nLen = wcslen(szCmdLine)+128+1;
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340 bufp = (wchar_t *)alloca(nLen*2);
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341 wcscpy (bufp, TEXT("\""));
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342 GetModuleFileName(NULL, bufp+1, 128-3);
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343 wcscpy (bufp+wcslen(bufp), TEXT("\" "));
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344 wcsncpy(bufp+wcslen(bufp), szCmdLine,nLen-wcslen(bufp));
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345 nLen = wcslen(bufp)+1;
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346 cmdline = (char *)alloca(nLen);
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347 if ( cmdline == NULL ) {
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348 return OutOfMemory();
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349 }
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350 WideCharToMultiByte(CP_ACP, 0, bufp, -1, cmdline, nLen, NULL, NULL);
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351 #else
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352 /* Grab the command line (use alloca() on Windows) */
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353 bufp = GetCommandLine();
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354 cmdline = (char *)alloca(SDL_strlen(bufp)+1);
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355 if ( cmdline == NULL ) {
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356 return OutOfMemory();
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357 }
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358 SDL_strcpy(cmdline, bufp);
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359 #endif
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360
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361 /* Parse it into argv and argc */
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362 argc = ParseCommandLine(cmdline, NULL);
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363 argv = (char **)alloca((argc+1)*(sizeof *argv));
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364 if ( argv == NULL ) {
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365 return OutOfMemory();
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366 }
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367 ParseCommandLine(cmdline, argv);
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368
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369 /* Run the main program (after a little SDL initialization) */
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370 return(console_main(argc, argv));
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371 }