SDL_windows_main.c
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/*
SDL_windows_main.c, placed in the public domain by Sam Lantinga 4/13/98
The WinMain function -- calls your program's main() function
*/
#include "SDL_config.h"
#ifdef __WIN32__
/* Include this so we define UNICODE properly */
#include "../../core/windows/SDL_windows.h"
/* Include the SDL main definition header */
#include "SDL.h"
#include "SDL_main.h"
#ifdef main
# undef main
#endif /* main */
static void
UnEscapeQuotes(char *arg)
{
char *last = NULL;
while (*arg) {
if (*arg == '"' && (last != NULL && *last == '\\')) {
char *c_curr = arg;
char *c_last = last;
while (*c_curr) {
*c_last = *c_curr;
c_last = c_curr;
c_curr++;
}
*c_last = '\0';
}
last = arg;
arg++;
}
}
/* Parse a command line buffer into arguments */
static int
ParseCommandLine(char *cmdline, char **argv)
{
char *bufp;
char *lastp = NULL;
int argc, last_argc;
argc = last_argc = 0;
for (bufp = cmdline; *bufp;) {
/* Skip leading whitespace */
while (*bufp == ' ' || *bufp == '\t') {
++bufp;
}
/* Skip over argument */
if (*bufp == '"') {
++bufp;
if (*bufp) {
if (argv) {
argv[argc] = bufp;
}
++argc;
}
/* Skip over word */
lastp = bufp;
while (*bufp && (*bufp != '"' || *lastp == '\\')) {
lastp = bufp;
++bufp;
}
} else {
if (*bufp) {
if (argv) {
argv[argc] = bufp;
}
++argc;
}
/* Skip over word */
while (*bufp && (*bufp != ' ' && *bufp != '\t')) {
++bufp;
}
}
if (*bufp) {
if (argv) {
*bufp = '\0';
}
++bufp;
}
/* Strip out \ from \" sequences */
if (argv && last_argc != argc) {
UnEscapeQuotes(argv[last_argc]);
}
last_argc = argc;
}
if (argv) {
argv[argc] = NULL;
}
return (argc);
}
/* Pop up an out of memory message, returns to Windows */
static BOOL
OutOfMemory(void)
{
SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Fatal Error", "Out of memory - aborting", NULL);
return FALSE;
}
#if defined(_MSC_VER)
/* The VC++ compiler needs main/wmain defined */
# define console_ansi_main main
# if UNICODE
# define console_wmain wmain
# endif
#endif
/* Gets the arguments with GetCommandLine, converts them to argc and argv
and calls SDL_main */
static int
main_getcmdline()
{
char **argv;
int argc;
char *cmdline = NULL;
int retval = 0;
int cmdalloc = 0;
const TCHAR *text = GetCommandLine();
const TCHAR *ptr;
int argc_guess = 2; /* space for NULL and initial argument. */
int rc;
/* make a rough guess of command line arguments. Overestimates if there
are quoted things. */
for (ptr = text; *ptr; ptr++) {
if ((*ptr == ' ') || (*ptr == '\t')) {
argc_guess++;
}
}
#if UNICODE
rc = WideCharToMultiByte(CP_UTF8, 0, text, -1, NULL, 0, NULL, NULL);
if (rc > 0) {
cmdalloc = rc + (sizeof (char *) * argc_guess);
argv = (char **) VirtualAlloc(NULL, cmdalloc, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE);
if (argv) {
int rc2;
cmdline = (char *) (argv + argc_guess);
rc2 = WideCharToMultiByte(CP_UTF8, 0, text, -1, cmdline, rc, NULL, NULL);
SDL_assert(rc2 == rc);
}
}
#else
/* !!! FIXME: are these in the system codepage? We need to convert to UTF-8. */
rc = ((int) SDL_strlen(text)) + 1;
cmdalloc = rc + (sizeof (char *) * argc_guess);
argv = (char **) VirtualAlloc(NULL, cmdalloc, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE);
if (argv) {
cmdline = (char *) (argv + argc_guess);
SDL_strcpy(cmdline, text);
}
#endif
if (cmdline == NULL) {
return OutOfMemory();
}
/* Parse it into argv and argc */
SDL_assert(ParseCommandLine(cmdline, NULL) <= argc_guess);
argc = ParseCommandLine(cmdline, argv);
SDL_SetMainReady();
/* Run the application main() code */
retval = SDL_main(argc, argv);
VirtualFree(argv, cmdalloc, MEM_DECOMMIT);
VirtualFree(argv, 0, MEM_RELEASE);
return retval;
}
/* This is where execution begins [console apps, ansi] */
int
console_ansi_main(int argc, char *argv[])
{
return main_getcmdline();
}
#if UNICODE
/* This is where execution begins [console apps, unicode] */
int
console_wmain(int argc, wchar_t *wargv[], wchar_t *wenvp)
{
return main_getcmdline();
}
#endif
/* This is where execution begins [windowed apps] */
int WINAPI
WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw)
{
return main_getcmdline();
}
#endif /* __WIN32__ */
/* vi: set ts=4 sw=4 expandtab: */
SDL.h
SDL_SetMainReady
#define SDL_SetMainReady
Definition: SDL_dynapi_overrides.h:242
SDL_main.h
NULL
#define NULL
Definition: begin_code.h:167
SDL_ShowSimpleMessageBox
#define SDL_ShowSimpleMessageBox
Definition: SDL_dynapi_overrides.h:244
WinMain
int CALLBACK WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
Definition: SDL_winrt_main_NonXAML.cpp:51
retval
SDL_bool retval
Definition: testgamecontroller.c:65
text
static char text[MAX_TEXT_LENGTH]
Definition: testime.c:47
SDL_MESSAGEBOX_ERROR
@ SDL_MESSAGEBOX_ERROR
Definition: SDL_messagebox.h:39
SDL_assert
#define SDL_assert(condition)
Definition: SDL_assert.h:169
SDL_strlen
#define SDL_strlen
Definition: SDL_dynapi_overrides.h:393
SDL_main
SDLMAIN_DECLSPEC int SDL_main(int argc, char *argv[])
FALSE
#define FALSE
Definition: edid-parse.c:34