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annotate src/main/win32/SDL_win32_main.c @ 1704:03fb364e3283 SDL-1.3

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Merged memory leak fix from SDL 1.2
author Sam Lantinga <slouken@libsdl.org>
date Sat, 24 Jun 2006 03:43:21 +0000
parents 4da1ee79c9af
children ed4d4f1ea201
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 /* Parse a command line buffer into arguments */
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57 static int
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58 ParseCommandLine(char *cmdline, char **argv)
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59 {
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60 char *bufp;
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61 int argc;
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62
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63 argc = 0;
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64 for (bufp = cmdline; *bufp;) {
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65 /* Skip leading whitespace */
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66 while (isspace(*bufp)) {
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67 ++bufp;
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68 }
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69 /* Skip over argument */
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70 if (*bufp == '"') {
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71 ++bufp;
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72 if (*bufp) {
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73 if (argv) {
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74 argv[argc] = bufp;
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75 }
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76 ++argc;
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77 }
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78 /* Skip over word */
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79 while (*bufp && (*bufp != '"')) {
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80 ++bufp;
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81 }
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82 } else {
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83 if (*bufp) {
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84 if (argv) {
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85 argv[argc] = bufp;
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86 }
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87 ++argc;
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88 }
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89 /* Skip over word */
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90 while (*bufp && !isspace(*bufp)) {
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91 ++bufp;
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92 }
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93 }
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94 if (*bufp) {
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95 if (argv) {
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96 *bufp = '\0';
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97 }
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98 ++bufp;
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99 }
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100 }
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101 if (argv) {
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102 argv[argc] = NULL;
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103 }
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104 return (argc);
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105 }
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106
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107 /* Show an error message */
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108 static void
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109 ShowError(const char *title, const char *message)
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110 {
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111 /* If USE_MESSAGEBOX is defined, you need to link with user32.lib */
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112 #ifdef USE_MESSAGEBOX
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113 MessageBox(NULL, message, title, MB_ICONEXCLAMATION | MB_OK);
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114 #else
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115 fprintf(stderr, "%s: %s\n", title, message);
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116 #endif
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117 }
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118
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119 /* Pop up an out of memory message, returns to Windows */
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120 static BOOL
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121 OutOfMemory(void)
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122 {
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123 ShowError("Fatal Error", "Out of memory - aborting");
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124 return FALSE;
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125 }
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126
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127 /* SDL_Quit() shouldn't be used with atexit() directly because
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128 calling conventions may differ... */
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129 static void
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130 cleanup(void)
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131 {
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132 SDL_Quit();
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133 }
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134
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135 /* Remove the output files if there was no output written */
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136 static void
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137 cleanup_output(void)
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138 {
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139 #ifndef NO_STDIO_REDIRECT
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140 FILE *file;
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141 int empty;
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142 #endif
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143
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144 /* Flush the output in case anything is queued */
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145 fclose(stdout);
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146 fclose(stderr);
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147
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148 #ifndef NO_STDIO_REDIRECT
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149 /* See if the files have any output in them */
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150 if (stdoutPath[0]) {
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151 file = fopen(stdoutPath, TEXT("rb"));
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152 if (file) {
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153 empty = (fgetc(file) == EOF) ? 1 : 0;
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154 fclose(file);
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155 if (empty) {
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156 remove(stdoutPath);
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157 }
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158 }
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159 }
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160 if (stderrPath[0]) {
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161 file = fopen(stderrPath, TEXT("rb"));
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162 if (file) {
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163 empty = (fgetc(file) == EOF) ? 1 : 0;
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164 fclose(file);
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165 if (empty) {
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166 remove(stderrPath);
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167 }
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168 }
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169 }
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170 #endif
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171 }
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172
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173 #if defined(_MSC_VER) && !defined(_WIN32_WCE)
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174 /* The VC++ compiler needs main defined */
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175 #define console_main main
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176 #endif
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177
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178 /* This is where execution begins [console apps] */
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179 int
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180 console_main(int argc, char *argv[])
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181 {
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182 size_t n;
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183 char *bufp, *appname;
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184 int status;
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185
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186 /* Get the class name from argv[0] */
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187 appname = argv[0];
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188 if ((bufp = SDL_strrchr(argv[0], '\\')) != NULL) {
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189 appname = bufp + 1;
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190 } else if ((bufp = SDL_strrchr(argv[0], '/')) != NULL) {
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191 appname = bufp + 1;
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192 }
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193
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194 if ((bufp = SDL_strrchr(appname, '.')) == NULL)
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195 n = SDL_strlen(appname);
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196 else
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197 n = (bufp - appname);
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198
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199 bufp = SDL_stack_alloc(char, n + 1);
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200 if (bufp == NULL) {
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201 return OutOfMemory();
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202 }
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203 SDL_strlcpy(bufp, appname, n + 1);
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204 appname = bufp;
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205
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206 /* Load SDL dynamic link library */
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207 if (SDL_Init(SDL_INIT_NOPARACHUTE) < 0) {
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208 ShowError("WinMain() error", SDL_GetError());
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209 return (FALSE);
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210 }
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211 atexit(cleanup_output);
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212 atexit(cleanup);
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213
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214 /* Sam:
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215 We still need to pass in the application handle so that
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216 DirectInput will initialize properly when SDL_RegisterApp()
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217 is called later in the video initialization.
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218 */
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219 SDL_SetModuleHandle(GetModuleHandle(NULL));
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220
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221 /* Run the application main() code */
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222 status = SDL_main(argc, argv);
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223
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224 /* Exit cleanly, calling atexit() functions */
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225 exit(status);
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226
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227 /* Hush little compiler, don't you cry... */
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228 return 0;
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229 }
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230
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231 /* This is where execution begins [windowed apps] */
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232 #ifdef _WIN32_WCE
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233 int WINAPI
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234 WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPWSTR szCmdLine, int sw)
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235 #else
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236 int WINAPI
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237 WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw)
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238 #endif
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239 {
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240 HINSTANCE handle;
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241 char **argv;
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242 int argc;
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243 char *cmdline;
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244 DWORD pathlen;
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245 #ifdef _WIN32_WCE
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246 wchar_t path[MAX_PATH];
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247 #else
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248 char path[MAX_PATH];
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249 #endif
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250 #ifdef _WIN32_WCE
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251 wchar_t *bufp;
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252 int nLen;
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253 #else
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254 char *bufp;
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255 size_t nLen;
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256 #endif
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257 #ifndef NO_STDIO_REDIRECT
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258 FILE *newfp;
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259 #endif
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260
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261 /* Start up DDHELP.EXE before opening any files, so DDHELP doesn't
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262 keep them open. This is a hack.. hopefully it will be fixed
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263 someday. DDHELP.EXE starts up the first time DDRAW.DLL is loaded.
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264 */
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265 handle = LoadLibrary(TEXT("DDRAW.DLL"));
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266 if (handle != NULL) {
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267 FreeLibrary(handle);
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268 }
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269 #ifndef NO_STDIO_REDIRECT
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270 pathlen = GetModuleFileName(NULL, path, SDL_arraysize(path));
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271 while (pathlen > 0 && path[pathlen] != '\\') {
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272 --pathlen;
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273 }
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274 path[pathlen] = '\0';
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275
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276 #ifdef _WIN32_WCE
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277 wcsncpy(stdoutPath, path, SDL_arraysize(stdoutPath));
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278 wcsncat(stdoutPath, DIR_SEPERATOR STDOUT_FILE, SDL_arraysize(stdoutPath));
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279 #else
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280 SDL_strlcpy(stdoutPath, path, SDL_arraysize(stdoutPath));
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281 SDL_strlcat(stdoutPath, DIR_SEPERATOR STDOUT_FILE,
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282 SDL_arraysize(stdoutPath));
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283 #endif
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284
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285 /* Redirect standard input and standard output */
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286 newfp = freopen(stdoutPath, TEXT("w"), stdout);
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287
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288 #ifndef _WIN32_WCE
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289 if (newfp == NULL) { /* This happens on NT */
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290 #if !defined(stdout)
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291 stdout = fopen(stdoutPath, TEXT("w"));
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292 #else
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293 newfp = fopen(stdoutPath, TEXT("w"));
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294 if (newfp) {
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295 *stdout = *newfp;
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296 }
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297 #endif
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298 }
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299 #endif /* _WIN32_WCE */
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300
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301 #ifdef _WIN32_WCE
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302 wcsncpy(stderrPath, path, SDL_arraysize(stdoutPath));
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303 wcsncat(stderrPath, DIR_SEPERATOR STDOUT_FILE, SDL_arraysize(stdoutPath));
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304 #else
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305 SDL_strlcpy(stderrPath, path, SDL_arraysize(stderrPath));
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306 SDL_strlcat(stderrPath, DIR_SEPERATOR STDERR_FILE,
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307 SDL_arraysize(stderrPath));
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308 #endif
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309
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310 newfp = freopen(stderrPath, TEXT("w"), stderr);
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311 #ifndef _WIN32_WCE
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312 if (newfp == NULL) { /* This happens on NT */
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313 #if !defined(stderr)
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314 stderr = fopen(stderrPath, TEXT("w"));
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315 #else
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316 newfp = fopen(stderrPath, TEXT("w"));
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317 if (newfp) {
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318 *stderr = *newfp;
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319 }
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320 #endif
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321 }
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322 #endif /* _WIN32_WCE */
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323
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324 setvbuf(stdout, NULL, _IOLBF, BUFSIZ); /* Line buffered */
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325 setbuf(stderr, NULL); /* No buffering */
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326 #endif /* !NO_STDIO_REDIRECT */
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327
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328 #ifdef _WIN32_WCE
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329 nLen = wcslen(szCmdLine) + 128 + 1;
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330 bufp = SDL_stack_alloc(wchar_t, nLen * 2);
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331 wcscpy(bufp, TEXT("\""));
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332 GetModuleFileName(NULL, bufp + 1, 128 - 3);
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333 wcscpy(bufp + wcslen(bufp), TEXT("\" "));
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334 wcsncpy(bufp + wcslen(bufp), szCmdLine, nLen - wcslen(bufp));
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335 nLen = wcslen(bufp) + 1;
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336 cmdline = SDL_stack_alloc(char, nLen);
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337 if (cmdline == NULL) {
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338 return OutOfMemory();
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339 }
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340 WideCharToMultiByte(CP_ACP, 0, bufp, -1, cmdline, nLen, NULL, NULL);
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341 #else
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342 /* Grab the command line */
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343 bufp = GetCommandLine();
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344 nLen = SDL_strlen(bufp) + 1;
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345 cmdline = SDL_stack_alloc(char, nLen);
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346 if (cmdline == NULL) {
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347 return OutOfMemory();
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348 }
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349 SDL_strlcpy(cmdline, bufp, nLen);
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350 #endif
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351
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352 /* Parse it into argv and argc */
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353 argc = ParseCommandLine(cmdline, NULL);
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354 argv = SDL_stack_alloc(char *, argc + 1);
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355 if (argv == NULL) {
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356 return OutOfMemory();
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357 }
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358 ParseCommandLine(cmdline, argv);
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359
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360 /* Run the main program (after a little SDL initialization) */
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361 console_main(argc, argv);
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362
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363 /* Hush little compiler, don't you cry... */
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364 return 0;
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365 }
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366
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367 /* vi: set ts=4 sw=4 expandtab: */