annotate src/main/win32/SDL_win32_main.c @ 1286:d7bca8c8161e

Use the executable directory, not the current directory, for stdio output files
author Sam Lantinga <slouken@libsdl.org>
date Sun, 29 Jan 2006 08:39:35 +0000
parents ed57c876700d
children 3692456e7b0f
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 <string.h>
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9 #include <ctype.h>
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10 #include <stdlib.h>
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11
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12 #include <windows.h>
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13 #include <malloc.h> /* For _alloca() */
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14
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15 #ifdef _WIN32_WCE
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16 # define DIR_SEPERATOR TEXT("\\")
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17 # undef _getcwd
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18 # define _getcwd(str,len) wcscpy(str,TEXT(""))
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19 # define setbuf(f,b)
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20 # define setvbuf(w,x,y,z)
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21 # define fopen _wfopen
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22 # define freopen _wfreopen
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23 # define remove(x) DeleteFile(x)
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24 # define strcat wcscat
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25 #else
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26 # define DIR_SEPERATOR TEXT("/")
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27 # include <direct.h>
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28 #endif
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29
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30 /* Include the SDL main definition header */
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31 #include "SDL.h"
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32 #include "SDL_main.h"
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33
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34 #ifdef main
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35 # ifndef _WIN32_WCE_EMULATION
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36 # undef main
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37 # endif /* _WIN32_WCE_EMULATION */
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38 #endif /* main */
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39
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40 /* The standard output files */
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41 #define STDOUT_FILE TEXT("stdout.txt")
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42 #define STDERR_FILE TEXT("stderr.txt")
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43
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44 #ifndef NO_STDIO_REDIRECT
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45 # ifdef _WIN32_WCE
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46 static wchar_t stdoutPath[MAX_PATH];
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47 static wchar_t stderrPath[MAX_PATH];
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48 # else
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49 static char stdoutPath[MAX_PATH];
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50 static char stderrPath[MAX_PATH];
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51 # endif
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52 #endif
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53
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54 #if defined(_WIN32_WCE) && _WIN32_WCE < 300
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55 /* seems to be undefined in Win CE although in online help */
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56 #define isspace(a) (((CHAR)a == ' ') || ((CHAR)a == '\t'))
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57
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58 /* seems to be undefined in Win CE although in online help */
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59 char *strrchr(char *str, int c)
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60 {
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61 char *p;
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62
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63 /* Skip to the end of the string */
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64 p=str;
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65 while (*p)
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66 p++;
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67
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68 /* Look for the given character */
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69 while ( (p >= str) && (*p != (CHAR)c) )
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70 p--;
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71
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72 /* Return NULL if character not found */
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73 if ( p < str ) {
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74 p = NULL;
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75 }
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76 return p;
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77 }
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78 #endif /* _WIN32_WCE < 300 */
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79
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80 /* Parse a command line buffer into arguments */
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81 static int ParseCommandLine(char *cmdline, char **argv)
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82 {
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83 char *bufp;
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84 int argc;
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85
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86 argc = 0;
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87 for ( bufp = cmdline; *bufp; ) {
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88 /* Skip leading whitespace */
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89 while ( isspace(*bufp) ) {
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90 ++bufp;
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91 }
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92 /* Skip over argument */
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93 if ( *bufp == '"' ) {
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94 ++bufp;
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95 if ( *bufp ) {
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96 if ( argv ) {
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97 argv[argc] = bufp;
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98 }
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99 ++argc;
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100 }
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101 /* Skip over word */
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102 while ( *bufp && (*bufp != '"') ) {
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103 ++bufp;
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104 }
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105 } else {
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106 if ( *bufp ) {
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107 if ( argv ) {
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108 argv[argc] = bufp;
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109 }
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110 ++argc;
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111 }
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112 /* Skip over word */
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113 while ( *bufp && ! isspace(*bufp) ) {
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114 ++bufp;
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115 }
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116 }
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117 if ( *bufp ) {
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118 if ( argv ) {
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119 *bufp = '\0';
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120 }
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121 ++bufp;
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122 }
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123 }
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124 if ( argv ) {
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125 argv[argc] = NULL;
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126 }
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127 return(argc);
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128 }
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129
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130 /* Show an error message */
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131 static void ShowError(const char *title, const char *message)
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132 {
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133 /* If USE_MESSAGEBOX is defined, you need to link with user32.lib */
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134 #ifdef USE_MESSAGEBOX
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135 MessageBox(NULL, message, title, MB_ICONEXCLAMATION|MB_OK);
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136 #else
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137 fprintf(stderr, "%s: %s\n", title, message);
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138 #endif
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139 }
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140
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141 /* Pop up an out of memory message, returns to Windows */
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142 static BOOL OutOfMemory(void)
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143 {
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144 ShowError("Fatal Error", "Out of memory - aborting");
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145 return FALSE;
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146 }
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147
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148 /* Remove the output files if there was no output written */
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149 static void __cdecl cleanup_output(void)
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150 {
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151 #ifndef NO_STDIO_REDIRECT
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152 FILE *file;
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153 int empty;
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154 #endif
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155
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156 /* Flush the output in case anything is queued */
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157 fclose(stdout);
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158 fclose(stderr);
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159
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160 #ifndef NO_STDIO_REDIRECT
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161 /* See if the files have any output in them */
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162 if ( stdoutPath[0] ) {
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163 file = fopen(stdoutPath, TEXT("rb"));
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164 if ( file ) {
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165 empty = (fgetc(file) == EOF) ? 1 : 0;
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166 fclose(file);
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167 if ( empty ) {
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168 remove(stdoutPath);
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169 }
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170 }
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171 }
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172 if ( stderrPath[0] ) {
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173 file = fopen(stderrPath, TEXT("rb"));
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174 if ( file ) {
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175 empty = (fgetc(file) == EOF) ? 1 : 0;
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176 fclose(file);
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177 if ( empty ) {
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178 remove(stderrPath);
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179 }
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180 }
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181 }
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182 #endif
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183 }
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184
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185 #if defined(_MSC_VER) && !defined(_WIN32_WCE)
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186 /* The VC++ compiler needs main defined */
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187 #define console_main main
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188 #endif
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189
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190 /* This is where execution begins [console apps] */
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191 int console_main(int argc, char *argv[])
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192 {
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193 int n;
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194 char *bufp, *appname;
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195
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196 /* Get the class name from argv[0] */
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197 appname = argv[0];
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198 if ( (bufp=strrchr(argv[0], '\\')) != NULL ) {
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199 appname = bufp+1;
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200 } else
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201 if ( (bufp=strrchr(argv[0], '/')) != NULL ) {
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202 appname = bufp+1;
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203 }
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204
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205 if ( (bufp=strrchr(appname, '.')) == NULL )
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206 n = strlen(appname);
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207 else
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208 n = (bufp-appname);
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209
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210 bufp = (char *)alloca(n+1);
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211 if ( bufp == NULL ) {
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212 return OutOfMemory();
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213 }
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214 strncpy(bufp, appname, n);
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215 bufp[n] = '\0';
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216 appname = bufp;
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217
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218 /* Load SDL dynamic link library */
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219 if ( SDL_Init(SDL_INIT_NOPARACHUTE) < 0 ) {
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220 ShowError("WinMain() error", SDL_GetError());
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221 return(FALSE);
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222 }
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223 atexit(cleanup_output);
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224 atexit(SDL_Quit);
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225
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226 #ifndef DISABLE_VIDEO
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227 #if 0
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228 /* Create and register our class *
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229 DJM: If we do this here, the user nevers gets a chance to
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230 putenv(SDL_WINDOWID). This is already called later by
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231 the (DIB|DX5)_CreateWindow function, so it should be
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232 safe to comment it out here.
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233 if ( SDL_RegisterApp(appname, CS_BYTEALIGNCLIENT,
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234 GetModuleHandle(NULL)) < 0 ) {
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235 ShowError("WinMain() error", SDL_GetError());
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236 exit(1);
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237 }*/
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238 #else
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239 /* Sam:
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240 We still need to pass in the application handle so that
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241 DirectInput will initialize properly when SDL_RegisterApp()
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242 is called later in the video initialization.
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243 */
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244 SDL_SetModuleHandle(GetModuleHandle(NULL));
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245 #endif /* 0 */
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246 #endif /* !DISABLE_VIDEO */
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247
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248 /* Run the application main() code */
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249 SDL_main(argc, argv);
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250
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251 /* Exit cleanly, calling atexit() functions */
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252 exit(0);
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253
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254 /* Hush little compiler, don't you cry... */
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255 return(0);
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256 }
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257
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258 /* This is where execution begins [windowed apps] */
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259 #ifdef _WIN32_WCE
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260 int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPWSTR szCmdLine, int sw)
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261 #else
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262 int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw)
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263 #endif
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264 {
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265 HINSTANCE handle;
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266 char **argv;
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267 int argc;
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268 char *cmdline;
1286
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269 DWORD pathlen;
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270 #ifdef _WIN32_WCE
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271 wchar_t path[MAX_PATH];
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272 #else
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273 char path[MAX_PATH];
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274 #endif
754
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275 #ifdef _WIN32_WCE
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276 wchar_t *bufp;
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277 int nLen;
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278 #else
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279 char *bufp;
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280 #endif
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281 #ifndef NO_STDIO_REDIRECT
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282 FILE *newfp;
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283 #endif
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284
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285 /* Start up DDHELP.EXE before opening any files, so DDHELP doesn't
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286 keep them open. This is a hack.. hopefully it will be fixed
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287 someday. DDHELP.EXE starts up the first time DDRAW.DLL is loaded.
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288 */
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289 handle = LoadLibrary(TEXT("DDRAW.DLL"));
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290 if ( handle != NULL ) {
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291 FreeLibrary(handle);
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292 }
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293
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294 #ifndef NO_STDIO_REDIRECT
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295 pathlen = GetModuleFileName(NULL, path, SDL_TABLESIZE(path));
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296 while ( pathlen > 0 && path[pathlen] != '\\' ) {
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297 --pathlen;
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298 }
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299 path[pathlen] = '\0';
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300
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301 strcpy( stdoutPath, path );
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302 strcat( stdoutPath, DIR_SEPERATOR STDOUT_FILE );
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303
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304 /* Redirect standard input and standard output */
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305 newfp = freopen(stdoutPath, TEXT("w"), stdout);
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306
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307 #ifndef _WIN32_WCE
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308 if ( newfp == NULL ) { /* This happens on NT */
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309 #if !defined(stdout)
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310 stdout = fopen(stdoutPath, TEXT("w"));
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311 #else
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312 newfp = fopen(stdoutPath, TEXT("w"));
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313 if ( newfp ) {
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314 *stdout = *newfp;
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315 }
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316 #endif
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317 }
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318 #endif /* _WIN32_WCE */
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319
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320 strcpy( stderrPath, path );
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321 strcat( stderrPath, DIR_SEPERATOR STDERR_FILE );
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322
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323 newfp = freopen(stderrPath, TEXT("w"), stderr);
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324 #ifndef _WIN32_WCE
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325 if ( newfp == NULL ) { /* This happens on NT */
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326 #if !defined(stderr)
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327 stderr = fopen(stderrPath, TEXT("w"));
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328 #else
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329 newfp = fopen(stderrPath, TEXT("w"));
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330 if ( newfp ) {
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331 *stderr = *newfp;
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332 }
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333 #endif
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334 }
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335 #endif /* _WIN32_WCE */
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336
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337 setvbuf(stdout, NULL, _IOLBF, BUFSIZ); /* Line buffered */
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338 setbuf(stderr, NULL); /* No buffering */
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339 #endif /* !NO_STDIO_REDIRECT */
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340
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341 #ifdef _WIN32_WCE
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342 nLen = wcslen(szCmdLine)+128+1;
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343 bufp = (wchar_t *)alloca(nLen*2);
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344 wcscpy (bufp, TEXT("\""));
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345 GetModuleFileName(NULL, bufp+1, 128-3);
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346 wcscpy (bufp+wcslen(bufp), TEXT("\" "));
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347 wcsncpy(bufp+wcslen(bufp), szCmdLine,nLen-wcslen(bufp));
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348 nLen = wcslen(bufp)+1;
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349 cmdline = (char *)alloca(nLen);
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350 if ( cmdline == NULL ) {
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351 return OutOfMemory();
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352 }
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353 WideCharToMultiByte(CP_ACP, 0, bufp, -1, cmdline, nLen, NULL, NULL);
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354 #else
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355 /* Grab the command line (use alloca() on Windows) */
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356 bufp = GetCommandLine();
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357 cmdline = (char *)alloca(strlen(bufp)+1);
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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 strcpy(cmdline, bufp);
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362 #endif
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363
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364 /* Parse it into argv and argc */
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365 argc = ParseCommandLine(cmdline, NULL);
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366 argv = (char **)alloca((argc+1)*(sizeof *argv));
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367 if ( argv == NULL ) {
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368 return OutOfMemory();
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369 }
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370 ParseCommandLine(cmdline, argv);
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371
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372 /* Run the main program (after a little SDL initialization) */
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373 return(console_main(argc, argv));
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374 }