src/main/win32/SDL_win32_main.c
changeset 754 623b453a3219
child 766 ed57c876700d
equal deleted inserted replaced
753:b14fdadd8311 754:623b453a3219
       
     1 /*
       
     2     SDL_main.c, placed in the public domain by Sam Lantinga  4/13/98
       
     3 
       
     4     The WinMain function -- calls your program's main() function
       
     5 */
       
     6 
       
     7 #include <stdio.h>
       
     8 #include <string.h>
       
     9 #include <ctype.h>
       
    10 #include <stdlib.h>
       
    11 
       
    12 #include <windows.h>
       
    13 #include <malloc.h>			/* For _alloca() */
       
    14 
       
    15 #ifdef _WIN32_WCE
       
    16 # define DIR_SEPERATOR TEXT("\\")
       
    17 # define _getcwd(str,len)	wcscpy(str,DIR_SEPERATOR);
       
    18 # define setbuf(x)
       
    19 # define setvbuf(x)
       
    20 # define fopen		_wfopen
       
    21 # define freopen	_wfreopen
       
    22 # define remove(x)	DeleteFile(x)
       
    23 # define strcat		wcscat
       
    24 #else
       
    25 # define DIR_SEPERATOR TEXT("/")
       
    26 # include <direct.h>
       
    27 #endif
       
    28 
       
    29 /* Include the SDL main definition header */
       
    30 #include "SDL.h"
       
    31 #include "SDL_main.h"
       
    32 
       
    33 #ifdef main
       
    34 # ifndef _WIN32_WCE_EMULATION
       
    35 #  undef main
       
    36 # endif /* _WIN32_WCE_EMULATION */
       
    37 #endif /* main */
       
    38 
       
    39 /* The standard output files */
       
    40 #define STDOUT_FILE	TEXT("stdout.txt")
       
    41 #define STDERR_FILE	TEXT("stderr.txt")
       
    42 
       
    43 #ifndef NO_STDIO_REDIRECT
       
    44 # ifdef _WIN32_WCE
       
    45   static wchar_t stdoutPath[MAX_PATH];
       
    46   static wchar_t stderrPath[MAX_PATH];
       
    47 # else
       
    48   static char stdoutPath[MAX_PATH];
       
    49   static char stderrPath[MAX_PATH];
       
    50 # endif
       
    51 #endif
       
    52 
       
    53 #if defined(_WIN32_WCE) && _WIN32_WCE < 300
       
    54 /* seems to be undefined in Win CE although in online help */
       
    55 #define isspace(a) (((CHAR)a == ' ') || ((CHAR)a == '\t'))
       
    56 
       
    57 /* seems to be undefined in Win CE although in online help */
       
    58 char *strrchr(char *str, int c)
       
    59 {
       
    60 	char *p;
       
    61 
       
    62 	/* Skip to the end of the string */
       
    63 	p=str;
       
    64 	while (*p)
       
    65 		p++;
       
    66 
       
    67 	/* Look for the given character */
       
    68 	while ( (p >= str) && (*p != (CHAR)c) )
       
    69 		p--;
       
    70 
       
    71 	/* Return NULL if character not found */
       
    72 	if ( p < str ) {
       
    73 		p = NULL;
       
    74 	}
       
    75 	return p;
       
    76 }
       
    77 #endif /* _WIN32_WCE < 300 */
       
    78 
       
    79 /* Parse a command line buffer into arguments */
       
    80 static int ParseCommandLine(char *cmdline, char **argv)
       
    81 {
       
    82 	char *bufp;
       
    83 	int argc;
       
    84 
       
    85 	argc = 0;
       
    86 	for ( bufp = cmdline; *bufp; ) {
       
    87 		/* Skip leading whitespace */
       
    88 		while ( isspace(*bufp) ) {
       
    89 			++bufp;
       
    90 		}
       
    91 		/* Skip over argument */
       
    92 		if ( *bufp == '"' ) {
       
    93 			++bufp;
       
    94 			if ( *bufp ) {
       
    95 				if ( argv ) {
       
    96 					argv[argc] = bufp;
       
    97 				}
       
    98 				++argc;
       
    99 			}
       
   100 			/* Skip over word */
       
   101 			while ( *bufp && (*bufp != '"') ) {
       
   102 				++bufp;
       
   103 			}
       
   104 		} else {
       
   105 			if ( *bufp ) {
       
   106 				if ( argv ) {
       
   107 					argv[argc] = bufp;
       
   108 				}
       
   109 				++argc;
       
   110 			}
       
   111 			/* Skip over word */
       
   112 			while ( *bufp && ! isspace(*bufp) ) {
       
   113 				++bufp;
       
   114 			}
       
   115 		}
       
   116 		if ( *bufp ) {
       
   117 			if ( argv ) {
       
   118 				*bufp = '\0';
       
   119 			}
       
   120 			++bufp;
       
   121 		}
       
   122 	}
       
   123 	if ( argv ) {
       
   124 		argv[argc] = NULL;
       
   125 	}
       
   126 	return(argc);
       
   127 }
       
   128 
       
   129 /* Show an error message */
       
   130 static void ShowError(const char *title, const char *message)
       
   131 {
       
   132 /* If USE_MESSAGEBOX is defined, you need to link with user32.lib */
       
   133 #ifdef USE_MESSAGEBOX
       
   134 	MessageBox(NULL, message, title, MB_ICONEXCLAMATION|MB_OK);
       
   135 #else
       
   136 	fprintf(stderr, "%s: %s\n", title, message);
       
   137 #endif
       
   138 }
       
   139 
       
   140 /* Pop up an out of memory message, returns to Windows */
       
   141 static BOOL OutOfMemory(void)
       
   142 {
       
   143 	ShowError("Fatal Error", "Out of memory - aborting");
       
   144 	return FALSE;
       
   145 }
       
   146 
       
   147 /* Remove the output files if there was no output written */
       
   148 static void __cdecl cleanup_output(void)
       
   149 {
       
   150 #ifndef NO_STDIO_REDIRECT
       
   151 	FILE *file;
       
   152 	int empty;
       
   153 #endif
       
   154 
       
   155 	/* Flush the output in case anything is queued */
       
   156 	fclose(stdout);
       
   157 	fclose(stderr);
       
   158 
       
   159 #ifndef NO_STDIO_REDIRECT
       
   160 	/* See if the files have any output in them */
       
   161 	if ( stdoutPath[0] ) {
       
   162 		file = fopen(stdoutPath, TEXT("rb"));
       
   163 		if ( file ) {
       
   164 			empty = (fgetc(file) == EOF) ? 1 : 0;
       
   165 			fclose(file);
       
   166 			if ( empty ) {
       
   167 				remove(stdoutPath);
       
   168 			}
       
   169 		}
       
   170 	}
       
   171 	if ( stderrPath[0] ) {
       
   172 		file = fopen(stderrPath, TEXT("rb"));
       
   173 		if ( file ) {
       
   174 			empty = (fgetc(file) == EOF) ? 1 : 0;
       
   175 			fclose(file);
       
   176 			if ( empty ) {
       
   177 				remove(stderrPath);
       
   178 			}
       
   179 		}
       
   180 	}
       
   181 #endif
       
   182 }
       
   183 
       
   184 #if defined(_MSC_VER) && !defined(_WIN32_WCE)
       
   185 /* The VC++ compiler needs main defined */
       
   186 #define console_main main
       
   187 #endif
       
   188 
       
   189 /* This is where execution begins [console apps] */
       
   190 int console_main(int argc, char *argv[])
       
   191 {
       
   192 	int n;
       
   193 	char *bufp, *appname;
       
   194 
       
   195 	/* Get the class name from argv[0] */
       
   196 	appname = argv[0];
       
   197 	if ( (bufp=strrchr(argv[0], '\\')) != NULL ) {
       
   198 		appname = bufp+1;
       
   199 	} else
       
   200 	if ( (bufp=strrchr(argv[0], '/')) != NULL ) {
       
   201 		appname = bufp+1;
       
   202 	}
       
   203 
       
   204 	if ( (bufp=strrchr(appname, '.')) == NULL )
       
   205 		n = strlen(appname);
       
   206 	else
       
   207 		n = (bufp-appname);
       
   208 
       
   209 	bufp = (char *)alloca(n+1);
       
   210 	if ( bufp == NULL ) {
       
   211 		return OutOfMemory();
       
   212 	}
       
   213 	strncpy(bufp, appname, n);
       
   214 	bufp[n] = '\0';
       
   215 	appname = bufp;
       
   216 
       
   217 	/* Load SDL dynamic link library */
       
   218 	if ( SDL_Init(SDL_INIT_NOPARACHUTE) < 0 ) {
       
   219 		ShowError("WinMain() error", SDL_GetError());
       
   220 		return(FALSE);
       
   221 	}
       
   222 	atexit(cleanup_output);
       
   223 	atexit(SDL_Quit);
       
   224 
       
   225 #ifndef DISABLE_VIDEO
       
   226 #if 0
       
   227 	/* Create and register our class *
       
   228 	   DJM: If we do this here, the user nevers gets a chance to
       
   229 	   putenv(SDL_WINDOWID).  This is already called later by
       
   230 	   the (DIB|DX5)_CreateWindow function, so it should be
       
   231 	   safe to comment it out here.
       
   232 	if ( SDL_RegisterApp(appname, CS_BYTEALIGNCLIENT, 
       
   233 	                     GetModuleHandle(NULL)) < 0 ) {
       
   234 		ShowError("WinMain() error", SDL_GetError());
       
   235 		exit(1);
       
   236 	}*/
       
   237 #else
       
   238 	/* Sam:
       
   239 	   We still need to pass in the application handle so that
       
   240 	   DirectInput will initialize properly when SDL_RegisterApp()
       
   241 	   is called later in the video initialization.
       
   242 	 */
       
   243 	SDL_SetModuleHandle(GetModuleHandle(NULL));
       
   244 #endif /* 0 */
       
   245 #endif /* !DISABLE_VIDEO */
       
   246 
       
   247 	/* Run the application main() code */
       
   248 	SDL_main(argc, argv);
       
   249 
       
   250 	/* Exit cleanly, calling atexit() functions */
       
   251 	exit(0);
       
   252 
       
   253 	/* Hush little compiler, don't you cry... */
       
   254 	return(0);
       
   255 }
       
   256 
       
   257 /* This is where execution begins [windowed apps] */
       
   258 #ifdef _WIN32_WCE
       
   259 int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPWSTR szCmdLine, int sw)
       
   260 #else
       
   261 int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw)
       
   262 #endif
       
   263 {
       
   264 	HINSTANCE handle;
       
   265 	char **argv;
       
   266 	int argc;
       
   267 	char *cmdline;
       
   268 #ifdef _WIN32_WCE
       
   269 	wchar_t *bufp;
       
   270 	int nLen;
       
   271 #else
       
   272 	char *bufp;
       
   273 #endif
       
   274 #ifndef NO_STDIO_REDIRECT
       
   275 	FILE *newfp;
       
   276 #endif
       
   277 
       
   278 	/* Start up DDHELP.EXE before opening any files, so DDHELP doesn't
       
   279 	   keep them open.  This is a hack.. hopefully it will be fixed 
       
   280 	   someday.  DDHELP.EXE starts up the first time DDRAW.DLL is loaded.
       
   281 	 */
       
   282 	handle = LoadLibrary(TEXT("DDRAW.DLL"));
       
   283 	if ( handle != NULL ) {
       
   284 		FreeLibrary(handle);
       
   285 	}
       
   286 
       
   287 #ifndef NO_STDIO_REDIRECT
       
   288 	_getcwd( stdoutPath, sizeof( stdoutPath ) );
       
   289 	strcat( stdoutPath, DIR_SEPERATOR STDOUT_FILE );
       
   290     
       
   291 	/* Redirect standard input and standard output */
       
   292 	newfp = freopen(stdoutPath, TEXT("w"), stdout);
       
   293 
       
   294 #ifndef _WIN32_WCE
       
   295 	if ( newfp == NULL ) {	/* This happens on NT */
       
   296 #if !defined(stdout)
       
   297 		stdout = fopen(stdoutPath, TEXT("w"));
       
   298 #else
       
   299 		newfp = fopen(stdoutPath, TEXT("w"));
       
   300 		if ( newfp ) {
       
   301 			*stdout = *newfp;
       
   302 		}
       
   303 #endif
       
   304 	}
       
   305 #endif /* _WIN32_WCE */
       
   306 
       
   307 	_getcwd( stderrPath, sizeof( stderrPath ) );
       
   308 	strcat( stderrPath, DIR_SEPERATOR STDERR_FILE );
       
   309 
       
   310 	newfp = freopen(stderrPath, TEXT("w"), stderr);
       
   311 #ifndef _WIN32_WCE
       
   312 	if ( newfp == NULL ) {	/* This happens on NT */
       
   313 #if !defined(stderr)
       
   314 		stderr = fopen(stderrPath, TEXT("w"));
       
   315 #else
       
   316 		newfp = fopen(stderrPath, TEXT("w"));
       
   317 		if ( newfp ) {
       
   318 			*stderr = *newfp;
       
   319 		}
       
   320 #endif
       
   321 	}
       
   322 #endif /* _WIN32_WCE */
       
   323 
       
   324 	setvbuf(stdout, NULL, _IOLBF, BUFSIZ);	/* Line buffered */
       
   325 	setbuf(stderr, NULL);			/* No buffering */
       
   326 #endif /* !NO_STDIO_REDIRECT */
       
   327 
       
   328 #ifdef _WIN32_WCE
       
   329 	nLen = wcslen(szCmdLine)+128+1;
       
   330 	bufp = (wchar_t *)alloca(nLen*2);
       
   331 	wcscpy (bufp, TEXT("\""));
       
   332 	GetModuleFileName(NULL, bufp+1, 128-3);
       
   333 	wcscpy (bufp+wcslen(bufp), TEXT("\" "));
       
   334 	wcsncpy(bufp+wcslen(bufp), szCmdLine,nLen-wcslen(bufp));
       
   335 	nLen = wcslen(bufp)+1;
       
   336 	cmdline = (char *)alloca(nLen);
       
   337 	if ( cmdline == NULL ) {
       
   338 		return OutOfMemory();
       
   339 	}
       
   340 	WideCharToMultiByte(CP_ACP, 0, bufp, -1, cmdline, nLen, NULL, NULL);
       
   341 #else
       
   342 	/* Grab the command line (use alloca() on Windows) */
       
   343 	bufp = GetCommandLine();
       
   344 	cmdline = (char *)alloca(strlen(bufp)+1);
       
   345 	if ( cmdline == NULL ) {
       
   346 		return OutOfMemory();
       
   347 	}
       
   348 	strcpy(cmdline, bufp);
       
   349 #endif
       
   350 
       
   351 	/* Parse it into argv and argc */
       
   352 	argc = ParseCommandLine(cmdline, NULL);
       
   353 	argv = (char **)alloca((argc+1)*(sizeof *argv));
       
   354 	if ( argv == NULL ) {
       
   355 		return OutOfMemory();
       
   356 	}
       
   357 	ParseCommandLine(cmdline, argv);
       
   358 
       
   359 	/* Run the main program (after a little SDL initialization) */
       
   360 	return(console_main(argc, argv));
       
   361 }