// win_main.c

#include "../client/client.h"
#include "../qcommon/qcommon.h"
#include "../win32/win_local.h"
#include "../win32/resource.h"
#include <errno.h>
#include <float.h>
#include <fcntl.h>
#include <stdio.h>
#include <direct.h>
#include <io.h>
#include <conio.h>
#include "../qcommon/stringed_ingame.h"

#define	CD_BASEDIR	"gamedata\\gamedata"
#define	CD_EXE		"jamp.exe"
#define	CD_BASEDIR_LINUX	"bin\\x86\\glibc-2.1"
#define	CD_EXE_LINUX "jamp"
#define	CD_VOLUME	"JEDIACAD"
#define MEM_THRESHOLD 128*1024*1024

static char		sys_cmdline[MAX_STRING_CHARS];
clientStatic_t	cls;

static int	sys_monkeySpank;
static int	sys_checksum;


void *Sys_GetBotAIAPI (void *parms ) {
	return NULL;
}

void Conbuf_AppendText( const char *pMsg )
{
	char		msg[4096];
	strcpy(msg, pMsg);
	printf(Q_CleanStr(msg));
	printf("\n");
}

/*
==================
Sys_LowPhysicalMemory()
==================
*/

qboolean Sys_LowPhysicalMemory() {
	MEMORYSTATUS stat;
	GlobalMemoryStatus (&stat);
	return (stat.dwTotalPhys <= MEM_THRESHOLD) ? qtrue : qfalse;
}

/*
==================
Sys_FunctionCmp
==================
*/
int Sys_FunctionCmp(void *f1, void *f2) {

	int i, j, l;
	byte func_end[32] = {0xC3, 0x90, 0x90, 0x00};
	byte *ptr, *ptr2;
	byte *f1_ptr, *f2_ptr;

	ptr = (byte *) f1;
	if (*(byte *)ptr == 0xE9) {
		//Com_Printf("f1 %p1 jmp %d\n", (int *) f1, *(int*)(ptr+1));
		f1_ptr = (byte*)(((byte*)f1) + (*(int *)(ptr+1)) + 5);
	}
	else {
		f1_ptr = ptr;
	}
	//Com_Printf("f1 ptr %p\n", f1_ptr);

	ptr = (byte *) f2;
	if (*(byte *)ptr == 0xE9) {
		//Com_Printf("f2 %p jmp %d\n", (int *) f2, *(int*)(ptr+1));
		f2_ptr = (byte*)(((byte*)f2) + (*(int *)(ptr+1)) + 5);
	}
	else {
		f2_ptr = ptr;
	}
	//Com_Printf("f2 ptr %p\n", f2_ptr);

#ifdef _DEBUG
	sprintf((char *)func_end, "%c%c%c%c%c%c%c", 0x5F, 0x5E, 0x5B, 0x8B, 0xE5, 0x5D, 0xC3);
#endif
	for (i = 0; i < 1024; i++) {
		for (j = 0; func_end[j]; j++) {
			if (f1_ptr[i+j] != func_end[j])
				break;
		}
		if (!func_end[j]) {
			break;
		}
	}
#ifdef _DEBUG
	l = i + 7;
#else
	l = i + 2;
#endif
	//Com_Printf("function length = %d\n", l);

	for (i = 0; i < l; i++) {
		// check for a potential function call
		if (*((byte *) &f1_ptr[i]) == 0xE8) {
			// get the function pointers in case this really is a function call
			ptr = (byte *) (((byte *) &f1_ptr[i]) + (*(int *) &f1_ptr[i+1])) + 5;
			ptr2 = (byte *) (((byte *) &f2_ptr[i]) + (*(int *) &f2_ptr[i+1])) + 5;
			// if it was a function call and both f1 and f2 call the same function
			if (ptr == ptr2) {
				i += 4;
				continue;
			}
		}
		if (f1_ptr[i] != f2_ptr[i])
			return qfalse;
	}
	return qtrue;
}

/*
==================
Sys_FunctionCheckSum
==================
*/
int Sys_FunctionCheckSum(void *f1) {

	int i, j, l;
	byte func_end[32] = {0xC3, 0x90, 0x90, 0x00};
	byte *ptr;
	byte *f1_ptr;

	ptr = (byte *) f1;
	if (*(byte *)ptr == 0xE9) {
		//Com_Printf("f1 %p1 jmp %d\n", (int *) f1, *(int*)(ptr+1));
		f1_ptr = (byte*)(((byte*)f1) + (*(int *)(ptr+1)) + 5);
	}
	else {
		f1_ptr = ptr;
	}
	//Com_Printf("f1 ptr %p\n", f1_ptr);

#ifdef _DEBUG
	sprintf((char *)func_end, "%c%c%c%c%c%c%c", 0x5F, 0x5E, 0x5B, 0x8B, 0xE5, 0x5D, 0xC3);
#endif
	for (i = 0; i < 1024; i++) {
		for (j = 0; func_end[j]; j++) {
			if (f1_ptr[i+j] != func_end[j])
				break;
		}
		if (!func_end[j]) {
			break;
		}
	}
#ifdef _DEBUG
	l = i + 7;
#else
	l = i + 2;
#endif
	//Com_Printf("function length = %d\n", l);
	return Com_BlockChecksum( f1_ptr, l );
}

/*
==================
Sys_MonkeyShouldBeSpanked
==================
*/
int Sys_MonkeyShouldBeSpanked( void ) {
	return sys_monkeySpank;
}


/*
==================
Sys_VerifyCodeChecksum
==================
*/
void Sys_VerifyCodeChecksum( void *codeBase ) {
}

/*
===============
PrintMatches

===============
*/
static char g_consoleField1[256];
static char g_consoleField2[256];

static void PrintMatches( const char *s ) {
	if ( !Q_stricmpn( s, g_consoleField1, strlen( g_consoleField1 ) ) ) {
		printf( "    %s\n", s );
	}
}

//qboolean stdin_active = qtrue;
char *Sys_ConsoleInput(void)
{
	const char ClearLine[] = "\r                                                                               \r";

	static int	len=0;
	static bool bPendingExtended = false;
	
	if (!kbhit()) return NULL;

	if (len == 0) memset(g_consoleField1,0,sizeof(g_consoleField1));
	
	g_consoleField1[len] = getch();
	
	if (bPendingExtended)
	{
		switch (g_consoleField1[len])
		{
			case 'H':	//up
				strcpy(g_consoleField1, g_consoleField2);
				printf(ClearLine);
				printf("%s",g_consoleField1);
				len = strlen(g_consoleField1);
			break;

			case 'K':	//left
			break;

			case 'M':	//right
			break;

			case 'P':	//down
			break;
		}
		g_consoleField1[len] = 0;	//erase last key hit
		bPendingExtended = false;
	}
	else
	switch ((unsigned char) g_consoleField1[len])
	{
	case 0x00:	//fkey is next
	case 0xe0:	//extended = arrow keys
		g_consoleField1[len] = 0;	//erase last key hit
		bPendingExtended = true;
		break;
	case 8: // backspace
		printf("%c %c",g_consoleField1[len],g_consoleField1[len]);
		g_consoleField1[len] = 0;
		if (len > 0) len--;
		g_consoleField1[len] = 0;
		break;
	case 9:	//Tab
		if (len) {
			g_consoleField1[len] = 0;	//erase last key hit
			printf( "\n");
			// run through again, printing matches
			Cmd_CommandCompletion( PrintMatches );
			Cvar_CommandCompletion( PrintMatches );
			printf( "\n%s", g_consoleField1);
		}
		break;
	case 27: // esc	
		// clear the line
		printf(ClearLine);
		len = 0;
		break;
	case '\r':	//enter
		g_consoleField1[len] = 0;	//erase last key hit
		printf("\n");
		if (len) {
			len = 0;
			strcpy(g_consoleField2, g_consoleField1);
			return g_consoleField1;
		}
		break;
	case 'v' - 'a' + 1:	// ctrl-v is paste
		g_consoleField1[len] = 0;	//erase last key hit
		char *cbd;
		cbd = Sys_GetClipboardData();
		if (cbd) {
			strncpy (&g_consoleField1[len], cbd, sizeof(g_consoleField1) );
			printf("%s",cbd);
			len += strlen(cbd);
			Z_Free( cbd );
			if (len == sizeof(g_consoleField1))
			{
				len = 0;
				return g_consoleField1;
			}
		}
		break;
	default:
		printf("%c",g_consoleField1[len]);
		len++;
		if (len == sizeof(g_consoleField1))
		{
			len = 0;
			return g_consoleField1;
		}
		break;
	}

	return NULL;
}

/*
==================
Sys_BeginProfiling
==================
*/
void Sys_BeginProfiling( void ) {
	// this is just used on the mac build
}

void Sys_ShowConsole( int visLevel, qboolean quitOnClose )
{
}

/*
=============
Sys_Error

Show the early console as an error dialog
=============
*/
void QDECL Sys_Error( const char *error, ... ) {
	va_list		argptr;
	char		text[4096];
    MSG        msg;

	va_start (argptr, error);
	Q_vsnprintf (text, sizeof(text), error, argptr);
	va_end (argptr);

	Conbuf_AppendText( text );
	Conbuf_AppendText( "\n" );

//	Sys_SetErrorText( text );
	Sys_ShowConsole( 1, qtrue );

	timeEndPeriod( 1 );

	IN_Shutdown();

	// wait for the user to quit
	while ( 1 ) {
		if (!GetMessage (&msg, NULL, 0, 0))
			Com_Quit_f ();
		TranslateMessage (&msg);
      	DispatchMessage (&msg);
	}

//	Sys_DestroyConsole();
	Com_ShutdownZoneMemory();
 	Com_ShutdownHunkMemory();

	exit (1);
}

/*
==============
Sys_Quit
==============
*/
void Sys_Quit( void ) {
	timeEndPeriod( 1 );
	IN_Shutdown();
//	Sys_DestroyConsole();
	Com_ShutdownZoneMemory();
 	Com_ShutdownHunkMemory();

	exit (0);
}

/*
==============
Sys_Print
==============
*/
void Sys_Print( const char *msg ) {
	Conbuf_AppendText( msg );
}


/*
==============
Sys_Mkdir
==============
*/
void Sys_Mkdir( const char *path ) {
	_mkdir (path);
}

/*
==============
Sys_Cwd
==============
*/
char *Sys_Cwd( void ) {
	static char cwd[MAX_OSPATH];

	_getcwd( cwd, sizeof( cwd ) - 1 );
	cwd[MAX_OSPATH-1] = 0;

	return cwd;
}

/*
==============
Sys_DefaultCDPath
==============
*/
char *Sys_DefaultCDPath( void ) {
	return "";
}

/*
==============
Sys_DefaultBasePath
==============
*/
char *Sys_DefaultBasePath( void ) {
	return Sys_Cwd();
}

/*
==============================================================

DIRECTORY SCANNING

==============================================================
*/

#define	MAX_FOUND_FILES	0x1000

void Sys_ListFilteredFiles( const char *basedir, char *subdirs, char *filter, char **psList, int *numfiles ) {
	char		search[MAX_OSPATH], newsubdirs[MAX_OSPATH];
	char		filename[MAX_OSPATH];
	int			findhandle;
	struct _finddata_t findinfo;

	if ( *numfiles >= MAX_FOUND_FILES - 1 ) {
		return;
	}

	if (strlen(subdirs)) {
		Com_sprintf( search, sizeof(search), "%s\\%s\\*", basedir, subdirs );
	}
	else {
		Com_sprintf( search, sizeof(search), "%s\\*", basedir );
	}

	findhandle = _findfirst (search, &findinfo);
	if (findhandle == -1) {
		return;
	}

	do {
		if (findinfo.attrib & _A_SUBDIR) {
			if (Q_stricmp(findinfo.name, ".") && Q_stricmp(findinfo.name, "..")) {
				if (strlen(subdirs)) {
					Com_sprintf( newsubdirs, sizeof(newsubdirs), "%s\\%s", subdirs, findinfo.name);
				}
				else {
					Com_sprintf( newsubdirs, sizeof(newsubdirs), "%s", findinfo.name);
				}
				Sys_ListFilteredFiles( basedir, newsubdirs, filter, psList, numfiles );
			}
		}
		if ( *numfiles >= MAX_FOUND_FILES - 1 ) {
			break;
		}
		Com_sprintf( filename, sizeof(filename), "%s\\%s", subdirs, findinfo.name );
		if (!Com_FilterPath( filter, filename, qfalse ))
			continue;
		psList[ *numfiles ] = CopyString( filename );
		(*numfiles)++;
	} while ( _findnext (findhandle, &findinfo) != -1 );

	_findclose (findhandle);
}

static qboolean strgtr(const char *s0, const char *s1) {
	int l0, l1, i;

	l0 = strlen(s0);
	l1 = strlen(s1);

	if (l1<l0) {
		l0 = l1;
	}

	for(i=0;i<l0;i++) {
		if (s1[i] > s0[i]) {
			return qtrue;
		}
		if (s1[i] < s0[i]) {
			return qfalse;
		}
	}
	return qfalse;
}

char **Sys_ListFiles( const char *directory, const char *extension, char *filter, int *numfiles, qboolean wantsubs ) {
	char		search[MAX_OSPATH];
	int			nfiles;
	char		**listCopy;
	char		*list[MAX_FOUND_FILES];
	struct _finddata_t findinfo;
	int			findhandle;
	int			flag;
	int			i;

	if (filter) {

		nfiles = 0;
		Sys_ListFilteredFiles( directory, "", filter, list, &nfiles );

		list[ nfiles ] = 0;
		*numfiles = nfiles;

		if (!nfiles)
			return NULL;

		listCopy = (char **)Z_Malloc( ( nfiles + 1 ) * sizeof( *listCopy ), TAG_FILESYS );
		for ( i = 0 ; i < nfiles ; i++ ) {
			listCopy[i] = list[i];
		}
		listCopy[i] = NULL;

		return listCopy;
	}

	if ( !extension) {
		extension = "";
	}

	// passing a slash as extension will find directories
	if ( extension[0] == '/' && extension[1] == 0 ) {
		extension = "";
		flag = 0;
	} else {
		flag = _A_SUBDIR;
	}

	Com_sprintf( search, sizeof(search), "%s\\*%s", directory, extension );

	// search
	nfiles = 0;

	findhandle = _findfirst (search, &findinfo);
	if (findhandle == -1) {
		*numfiles = 0;
		return NULL;
	}

	do {
		if ( (!wantsubs && flag ^ ( findinfo.attrib & _A_SUBDIR )) || (wantsubs && findinfo.attrib & _A_SUBDIR) ) {
			if ( nfiles == MAX_FOUND_FILES - 1 ) {
				break;
			}
			list[ nfiles ] = CopyString( findinfo.name );
			nfiles++;
		}
	} while ( _findnext (findhandle, &findinfo) != -1 );

	list[ nfiles ] = 0;

	_findclose (findhandle);

	// return a copy of the list
	*numfiles = nfiles;

	if ( !nfiles ) {
		return NULL;
	}

	listCopy = (char **)Z_Malloc( ( nfiles + 1 ) * sizeof( *listCopy ), TAG_FILESYS );
	for ( i = 0 ; i < nfiles ; i++ ) {
		listCopy[i] = list[i];
	}
	listCopy[i] = NULL;

	do {
		flag = 0;
		for(i=1; i<nfiles; i++) {
			if (strgtr(listCopy[i-1], listCopy[i])) {
				char *temp = listCopy[i];
				listCopy[i] = listCopy[i-1];
				listCopy[i-1] = temp;
				flag = 1;
			}
		}
	} while(flag);

	return listCopy;
}

void	Sys_FreeFileList( char **psList ) {
	int		i;

	if ( !psList ) {
		return;
	}

	for ( i = 0 ; psList[i] ; i++ ) {
		Z_Free( psList[i] );
	}

	Z_Free( psList );
}

//========================================================


/*
================
Sys_ScanForCD

Search all the drives to see if there is a valid CD to grab
the cddir from
================
*/
#ifdef FINAL_BUILD
static qboolean Sys_ScanForCD( void ) {
	char		drive[4];
	FILE		*f;
	char		test[MAX_OSPATH];

	drive[0] = 'c';
	drive[1] = ':';
	drive[2] = '\\';
	drive[3] = 0;

	// scan the drives
	for ( drive[0] = 'c' ; drive[0] <= 'z' ; drive[0]++ ) {
		if ( GetDriveType (drive) == DRIVE_CDROM ) {
			BOOL Result;
			char VolumeName[MAX_PATH],FileSystemName[MAX_PATH];
			DWORD VolumeSerialNumber,MaximumComponentLength,FileSystemFlags;
			
			Result = GetVolumeInformation(drive,VolumeName,sizeof(VolumeName),&VolumeSerialNumber,
				&MaximumComponentLength,&FileSystemFlags,FileSystemName,sizeof(FileSystemName));
			
			if (Result && (strcmpi(VolumeName,"JEDIOUTCAST") == 0 ) )
			{
				sprintf (test, "%s%s\\%s",drive, CD_BASEDIR, CD_EXE);
				f = fopen( test, "r" );
				if ( f ) {
					fclose (f);
					return qtrue;
				} else {
					sprintf(test, "%s%s\\%s", drive, CD_BASEDIR, CD_EXE_LINUX);
					f = fopen( test, "r" );
					if ( f ) {
						fclose (f);
						return qtrue;
					}
				}
			}
		}
	}

	return qfalse;
}
#endif
/*
================
Sys_CheckCD

Return true if the proper CD is in the drive
================
*/
qboolean	Sys_CheckCD( void ) {
#ifdef FINAL_BUILD
//	return Sys_ScanForCD();
#else
	return qtrue;
#endif
}


/*
================
Sys_GetClipboardData

================
*/
char *Sys_GetClipboardData( void ) {
	char *data = NULL;
	char *cliptext;

	if ( OpenClipboard( NULL ) != 0 ) {
		HANDLE hClipboardData;

		if ( ( hClipboardData = GetClipboardData( CF_TEXT ) ) != 0 ) {
			if ( ( cliptext = (char *)GlobalLock( hClipboardData ) ) != 0 ) {
				data = (char *)Z_Malloc( GlobalSize( hClipboardData ) + 1, TAG_CLIPBOARD);
				Q_strncpyz( data, cliptext, GlobalSize( hClipboardData )+1 );
				GlobalUnlock( hClipboardData );
				
				strtok( data, "\n\r\b" );
			}
		}
		CloseClipboard();
	}
	return data;
}


/*
========================================================================

LOAD/UNLOAD DLL

========================================================================
*/

/*
=================
Sys_UnloadDll

=================
*/
void Sys_UnloadDll( void *dllHandle ) {
	if ( !dllHandle ) {
		return;
	}
	if ( !FreeLibrary( (struct HINSTANCE__ *)dllHandle ) ) {
		Com_Error (ERR_FATAL, "Sys_UnloadDll FreeLibrary failed");
	}
}
//make sure the dll can be opened by the file system, then write the
//file back out again so it can be loaded is a library. If the read
//fails then the dll is probably not in the pk3 and we are running
//a pure server -rww
bool Sys_UnpackDLL(const char *name)
{
	void *data;
	fileHandle_t f;
	int len = FS_ReadFile(name, &data);
	int ck;

	if (len < 1)
	{ //failed to read the file (out of the pk3 if pure)
		return false;
	}

	if (FS_FileIsInPAK(name, &ck) == -1)
	{ //alright, it isn't in a pk3 anyway, so we don't need to write it.
		//this is allowable when running non-pure.
		FS_FreeFile(data);
		return true;
	}

	f = FS_FOpenFileWrite( name );
	if ( !f )
	{ //can't open for writing? Might be in use.
		//This is possibly a malicious user attempt to circumvent dll
		//replacement so we won't allow it.
		FS_FreeFile(data);
		return false;
	}

	if (FS_Write( data, len, f ) < len)
	{ //Failed to write the full length. Full disk maybe?
		FS_FreeFile(data);
		return false;
	}

	FS_FCloseFile( f );
	FS_FreeFile(data);

	return true;
}

/*
=================
Sys_LoadDll

Used to load a development dll instead of a virtual machine
=================
*/
extern char		*FS_BuildOSPath( const char *base, const char *game, const char *qpath );

void * QDECL Sys_LoadDll( const char *name, int (QDECL **entryPoint)(int, ...),
				  int (QDECL *systemcalls)(int, ...) ) {
	static int	lastWarning = 0;
	HINSTANCE	libHandle;
	void	(QDECL *dllEntry)( int (QDECL *syscallptr)(int, ...) );
	char	*basepath;
	char	*cdpath;
	char	*gamedir;
	char	*fn;
	char	filename[MAX_QPATH];

	Com_sprintf( filename, sizeof( filename ), "%sx86.dll", name );

	if (!Sys_UnpackDLL(filename))
	{
		return NULL;
	}

// rjr disable for final release #ifndef NDEBUG
	libHandle = LoadLibrary( filename );
	if ( !libHandle ) {
//#endif
	basepath = Cvar_VariableString( "fs_basepath" );
	cdpath = Cvar_VariableString( "fs_cdpath" );
	gamedir = Cvar_VariableString( "fs_game" );

	fn = FS_BuildOSPath( basepath, gamedir, filename );
	libHandle = LoadLibrary( fn );

	if ( !libHandle ) {
		if( cdpath[0] ) {
			fn = FS_BuildOSPath( cdpath, gamedir, filename );
			libHandle = LoadLibrary( fn );
		}

		if ( !libHandle ) {
			return NULL;
		}
	}
//#ifndef NDEBUG
	}
//#endif

	dllEntry = ( void (QDECL *)( int (QDECL *)( int, ... ) ) )GetProcAddress( libHandle, "dllEntry" ); 
	*entryPoint = (int (QDECL *)(int,...))GetProcAddress( libHandle, "vmMain" );
	if ( !*entryPoint || !dllEntry ) {
		FreeLibrary( libHandle );
		return NULL;
	}
	dllEntry( systemcalls );

	return libHandle;
}


/*
========================================================================

BACKGROUND FILE STREAMING

========================================================================
*/

#if 1

void Sys_InitStreamThread( void ) {
}

void Sys_ShutdownStreamThread( void ) {
}

void Sys_BeginStreamedFile( fileHandle_t f, int readAhead ) {
}

void Sys_EndStreamedFile( fileHandle_t f ) {
}

int Sys_StreamedRead( void *buffer, int size, int count, fileHandle_t f ) {
   return FS_Read( buffer, size * count, f );
}

void Sys_StreamSeek( fileHandle_t f, int offset, int origin ) {
   FS_Seek( f, offset, origin );
}


#else

typedef struct {
	fileHandle_t	file;
	byte	*buffer;
	qboolean	eof;
	qboolean	active;
	int		bufferSize;
	int		streamPosition;	// next byte to be returned by Sys_StreamRead
	int		threadPosition;	// next byte to be read from file
} streamsIO_t;

typedef struct {
	HANDLE				threadHandle;
	int					threadId;
	CRITICAL_SECTION	crit;
	streamsIO_t			sIO[MAX_FILE_HANDLES];
} streamState_t;

streamState_t	stream;

/*
===============
Sys_StreamThread

A thread will be sitting in this loop forever
================
*/
void Sys_StreamThread( void ) {
	int		buffer;
	int		count;
	int		readCount;
	int		bufferPoint;
	int		r, i;

	while (1) {
		Sleep( 10 );
//		EnterCriticalSection (&stream.crit);

		for (i=1;i<MAX_FILE_HANDLES;i++) {
			// if there is any space left in the buffer, fill it up
			if ( stream.sIO[i].active  && !stream.sIO[i].eof ) {
				count = stream.sIO[i].bufferSize - (stream.sIO[i].threadPosition - stream.sIO[i].streamPosition);
				if ( !count ) {
					continue;
				}

				bufferPoint = stream.sIO[i].threadPosition % stream.sIO[i].bufferSize;
				buffer = stream.sIO[i].bufferSize - bufferPoint;
				readCount = buffer < count ? buffer : count;

				r = FS_Read( stream.sIO[i].buffer + bufferPoint, readCount, stream.sIO[i].file );
				stream.sIO[i].threadPosition += r;

				if ( r != readCount ) {
					stream.sIO[i].eof = qtrue;
				}
			}
		}
//		LeaveCriticalSection (&stream.crit);
	}
}

/*
===============
Sys_InitStreamThread

================
*/
void Sys_InitStreamThread( void ) {
	int i;

	InitializeCriticalSection ( &stream.crit );

	// don't leave the critical section until there is a
	// valid file to stream, which will cause the StreamThread
	// to sleep without any overhead
//	EnterCriticalSection( &stream.crit );

	stream.threadHandle = CreateThread(
	   NULL,	// LPSECURITY_ATTRIBUTES lpsa,
	   0,		// DWORD cbStack,
	   (LPTHREAD_START_ROUTINE)Sys_StreamThread,	// LPTHREAD_START_ROUTINE lpStartAddr,
	   0,			// LPVOID lpvThreadParm,
	   0,			//   DWORD fdwCreate,
	   &stream.threadId);
	for(i=0;i<MAX_FILE_HANDLES;i++) {
		stream.sIO[i].active = qfalse;
	}
}

/*
===============
Sys_ShutdownStreamThread

================
*/
void Sys_ShutdownStreamThread( void ) {
}


/*
===============
Sys_BeginStreamedFile

================
*/
void Sys_BeginStreamedFile( fileHandle_t f, int readAhead ) {
	if ( stream.sIO[f].file ) {
		Sys_EndStreamedFile( stream.sIO[f].file );
	}

	stream.sIO[f].file = f;
	stream.sIO[f].buffer = Z_Malloc( readAhead );
	stream.sIO[f].bufferSize = readAhead;
	stream.sIO[f].streamPosition = 0;
	stream.sIO[f].threadPosition = 0;
	stream.sIO[f].eof = qfalse;
	stream.sIO[f].active = qtrue;

	// let the thread start running
//	LeaveCriticalSection( &stream.crit );
}

/*
===============
Sys_EndStreamedFile

================
*/
void Sys_EndStreamedFile( fileHandle_t f ) {
	if ( f != stream.sIO[f].file ) {
		Com_Error( ERR_FATAL, "Sys_EndStreamedFile: wrong file");
	}
	// don't leave critical section until another stream is started
	EnterCriticalSection( &stream.crit );

	stream.sIO[f].file = 0;
	stream.sIO[f].active = qfalse;

	Z_Free( stream.sIO[f].buffer );

	LeaveCriticalSection( &stream.crit );
}


/*
===============
Sys_StreamedRead

================
*/
int Sys_StreamedRead( void *buffer, int size, int count, fileHandle_t f ) {
	int		available;
	int		remaining;
	int		sleepCount;
	int		copy;
	int		bufferCount;
	int		bufferPoint;
	byte	*dest;

	if (stream.sIO[f].active == qfalse) {
		Com_Error( ERR_FATAL, "Streamed read with non-streaming file" );
	}

	dest = (byte *)buffer;
	remaining = size * count;

	if ( remaining <= 0 ) {
		Com_Error( ERR_FATAL, "Streamed read with non-positive size" );
	}

	sleepCount = 0;
	while ( remaining > 0 ) {
		available = stream.sIO[f].threadPosition - stream.sIO[f].streamPosition;
		if ( !available ) {
			if ( stream.sIO[f].eof ) {
				break;
			}
			if ( sleepCount == 1 ) {
				Com_DPrintf( "Sys_StreamedRead: waiting\n" );
			}
			if ( ++sleepCount > 100 ) {
				Com_Error( ERR_FATAL, "Sys_StreamedRead: thread has died");
			}
			Sleep( 10 );
			continue;
		}

		EnterCriticalSection( &stream.crit );

		bufferPoint = stream.sIO[f].streamPosition % stream.sIO[f].bufferSize;
		bufferCount = stream.sIO[f].bufferSize - bufferPoint;

		copy = available < bufferCount ? available : bufferCount;
		if ( copy > remaining ) {
			copy = remaining;
		}
		memcpy( dest, stream.sIO[f].buffer + bufferPoint, copy );
		stream.sIO[f].streamPosition += copy;
		dest += copy;
		remaining -= copy;

		LeaveCriticalSection( &stream.crit );
	}

	return (count * size - remaining) / size;
}

/*
===============
Sys_StreamSeek

================
*/
void Sys_StreamSeek( fileHandle_t f, int offset, int origin ) {

	// halt the thread
	EnterCriticalSection( &stream.crit );

	// clear to that point
	FS_Seek( f, offset, origin );
	stream.sIO[f].streamPosition = 0;
	stream.sIO[f].threadPosition = 0;
	stream.sIO[f].eof = qfalse;

	// let the thread start running at the new position
	LeaveCriticalSection( &stream.crit );
}

#endif

/*
========================================================================

EVENT LOOP

========================================================================
*/

#define	MAX_QUED_EVENTS		256
#define	MASK_QUED_EVENTS	( MAX_QUED_EVENTS - 1 )

sysEvent_t	eventQue[MAX_QUED_EVENTS];
static int	eventHead=0;
static int	eventTail=0;
byte		sys_packetReceived[MAX_MSGLEN];

/*
================
Sys_QueEvent

A time of 0 will get the current time
Ptr should either be null, or point to a block of data that can
be freed by the game later.
================
*/
void Sys_QueEvent( int time, sysEventType_t type, int value, int value2, int ptrLength, void *ptr ) {
	sysEvent_t	*ev;

	ev = &eventQue[ eventHead & MASK_QUED_EVENTS ];
	if ( eventHead - eventTail >= MAX_QUED_EVENTS ) {
		Com_Printf("Sys_QueEvent: overflow\n");
		// we are discarding an event, but don't leak memory
		if ( ev->evPtr ) {
			Z_Free( ev->evPtr );
		}
		eventTail++;
	}

	eventHead++;

	if ( time == 0 ) {
		time = Sys_Milliseconds();
	}

	ev->evTime = time;
	ev->evType = type;
	ev->evValue = value;
	ev->evValue2 = value2;
	ev->evPtrLength = ptrLength;
	ev->evPtr = ptr;
}

/*
================
Sys_GetEvent

================
*/
sysEvent_t Sys_GetEvent( void ) {
    MSG			msg;
	sysEvent_t	ev;
	char		*s;
	msg_t		netmsg;
	netadr_t	adr;

	// return if we have data
	if ( eventHead > eventTail ) {
		eventTail++;
		return eventQue[ ( eventTail - 1 ) & MASK_QUED_EVENTS ];
	}

	// pump the message loop
	while (PeekMessage (&msg, NULL, 0, 0, PM_NOREMOVE)) {
		if ( !GetMessage (&msg, NULL, 0, 0) ) {
			Com_Quit_f();
		}

		// save the msg time, because wndprocs don't have access to the timestamp
//		g_wv.sysMsgTime = msg.time;

		TranslateMessage (&msg);
      	DispatchMessage (&msg);
	}

	// check for console commands
	s = Sys_ConsoleInput();
	if ( s ) {
		char	*b;
		int		len;

		len = strlen( s ) + 1;
		b = (char *)Z_Malloc( len, TAG_EVENT );
		Q_strncpyz( b, s, len );
		Sys_QueEvent( 0, SE_CONSOLE, 0, 0, len, b );
	}

	// check for network packets
	MSG_Init( &netmsg, sys_packetReceived, sizeof( sys_packetReceived ) );
	if ( Sys_GetPacket ( &adr, &netmsg ) ) {
		netadr_t		*buf;
		int				len;

		// copy out to a seperate buffer for qeueing
		// the readcount stepahead is for SOCKS support
		len = sizeof( netadr_t ) + netmsg.cursize - netmsg.readcount;
		buf = (netadr_t *)Z_Malloc( len, TAG_EVENT, qtrue );
		*buf = adr;
		memcpy( buf+1, &netmsg.data[netmsg.readcount], netmsg.cursize - netmsg.readcount );
		Sys_QueEvent( 0, SE_PACKET, 0, 0, len, buf );
	}

	// return if we have data
	if ( eventHead > eventTail ) {
		eventTail++;
		return eventQue[ ( eventTail - 1 ) & MASK_QUED_EVENTS ];
	}

	// create an empty event to return

	memset( &ev, 0, sizeof( ev ) );
	ev.evTime = timeGetTime();

	return ev;
}

//================================================================

/*
=================
Sys_In_Restart_f

Restart the input subsystem
=================
*/
void Sys_In_Restart_f( void ) {
	IN_Shutdown();
	IN_Init();
}


/*
=================
Sys_Net_Restart_f

Restart the network subsystem
=================
*/
void Sys_Net_Restart_f( void ) {
	NET_Restart();
}


/*
================
Sys_Init

Called after the common systems (cvars, files, etc)
are initialized
================
*/
#define OSR2_BUILD_NUMBER 1111
#define WIN98_BUILD_NUMBER 1998

void Sys_Init( void ) {
	int cpuid;

	// make sure the timer is high precision, otherwise
	// NT gets 18ms resolution
	timeBeginPeriod( 1 );

	Cmd_AddCommand ("in_restart", Sys_In_Restart_f);
	Cmd_AddCommand ("net_restart", Sys_Net_Restart_f);

//	g_wv.osversion.dwOSVersionInfoSize = sizeof( g_wv.osversion );

//	if (!GetVersionEx (&g_wv.osversion))
//		Sys_Error ("Couldn't get OS info");

//	if (g_wv.osversion.dwMajorVersion < 4)
//		Sys_Error ("This game requires Windows version 4 or greater");
//	if (g_wv.osversion.dwPlatformId == VER_PLATFORM_WIN32s)
//		Sys_Error ("This game doesn't run on Win32s");

//	if ( g_wv.osversion.dwPlatformId == VER_PLATFORM_WIN32_NT )
//	{
//		Cvar_Set( "arch", "winnt" );
//	}
//	else if ( g_wv.osversion.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS )
//	{
//		if ( LOWORD( g_wv.osversion.dwBuildNumber ) >= WIN98_BUILD_NUMBER )
//		{
//			Cvar_Set( "arch", "win98" );
//		}
//		else if ( LOWORD( g_wv.osversion.dwBuildNumber ) >= OSR2_BUILD_NUMBER )
//		{
//			Cvar_Set( "arch", "win95 osr2.x" );
//		}
//		else
//		{
//			Cvar_Set( "arch", "win95" );
//		}
//	}
//	else
//	{
//		Cvar_Set( "arch", "unknown Windows variant" );
//	}

	// save out a couple things in rom cvars for the renderer to access
//	Cvar_Get( "win_hinstance", va("%i", (int)g_wv.hInstance), CVAR_ROM );
//	Cvar_Get( "win_wndproc", va("%i", (int)MainWndProc), CVAR_ROM );

	//
	// figure out our CPU
	//
	Cvar_Get( "sys_cpustring", "detect", 0 );
	if ( !Q_stricmp( Cvar_VariableString( "sys_cpustring"), "detect" ) )
	{
		Com_Printf( "...detecting CPU, found " );

		cpuid = Sys_GetProcessorId();

		switch ( cpuid )
		{
		case CPUID_GENERIC:
			Cvar_Set( "sys_cpustring", "generic" );
			break;
		case CPUID_INTEL_UNSUPPORTED:
			Cvar_Set( "sys_cpustring", "x86 (pre-Pentium)" );
			break;
		case CPUID_INTEL_PENTIUM:
			Cvar_Set( "sys_cpustring", "x86 (P5/PPro, non-MMX)" );
			break;
		case CPUID_INTEL_MMX:
			Cvar_Set( "sys_cpustring", "x86 (P5/Pentium2, MMX)" );
			break;
		case CPUID_INTEL_KATMAI:
			Cvar_Set( "sys_cpustring", "Intel Pentium III" );
			break;
		case CPUID_INTEL_WILLIAMETTE:
			Cvar_Set( "sys_cpustring", "Intel Pentium IV" );
			break;
		case CPUID_AMD_3DNOW:
			Cvar_Set( "sys_cpustring", "AMD w/ 3DNow!" );
			break;
		case CPUID_AXP:
			Cvar_Set( "sys_cpustring", "Alpha AXP" );
			break;
		default:
			Com_Error( ERR_FATAL, "Unknown cpu type %d\n", cpuid );
			break;
		}
	}
	else
	{
		Com_Printf( "...forcing CPU type to " );
		if ( !Q_stricmp( Cvar_VariableString( "sys_cpustring" ), "generic" ) )
		{
			cpuid = CPUID_GENERIC;
		}
		else if ( !Q_stricmp( Cvar_VariableString( "sys_cpustring" ), "x87" ) )
		{
			cpuid = CPUID_INTEL_PENTIUM;
		}
		else if ( !Q_stricmp( Cvar_VariableString( "sys_cpustring" ), "mmx" ) )
		{
			cpuid = CPUID_INTEL_MMX;
		}
		else if ( !Q_stricmp( Cvar_VariableString( "sys_cpustring" ), "3dnow" ) )
		{
			cpuid = CPUID_AMD_3DNOW;
		}
		else if ( !Q_stricmp( Cvar_VariableString( "sys_cpustring" ), "PentiumIII" ) )
		{
			cpuid = CPUID_INTEL_KATMAI;
		}
		else if ( !Q_stricmp( Cvar_VariableString( "sys_cpustring" ), "PentiumIV" ) )
		{
			cpuid = CPUID_INTEL_WILLIAMETTE;
		}
		else if ( !Q_stricmp( Cvar_VariableString( "sys_cpustring" ), "axp" ) )
		{
			cpuid = CPUID_AXP;
		}
		else
		{
			Com_Printf( "WARNING: unknown sys_cpustring '%s'\n", Cvar_VariableString( "sys_cpustring" ) );
			cpuid = CPUID_GENERIC;
		}
	}
	Cvar_SetValue( "sys_cpuid", cpuid );
	Com_Printf( "%s\n", Cvar_VariableString( "sys_cpustring" ) );

	Cvar_Set( "username", Sys_GetCurrentUser() );

	IN_Init();		// FIXME: not in dedicated?
}


//=======================================================================
//int	totalMsec, countMsec;

/*
==================
WinMain

==================
*/
//int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
int main(int argc, char **argv)
{
	char		cwd[MAX_OSPATH];
	char *cmdline;
	int i,len;
//	int			startTime, endTime;

    // should never get a previous instance in Win32
//    if ( hPrevInstance ) {
//        return 0;
//	}

//	sys_checksum = Sys_CodeInMemoryChecksum( hInstance );
//	Sys_VerifyCodeChecksum( hInstance );

	// merge the command line, this is kinda silly
	for (len = 1, i = 1; i < argc; i++)
		len += strlen(argv[i]) + 1;
	cmdline = (char *)malloc(len);
	*cmdline = 0;
	for (i = 1; i < argc; i++) {
		if (i > 1)
			strcat(cmdline, " ");
		strcat(cmdline, argv[i]);
	}

//	g_wv.hInstance = hInstance;
//	Q_strncpyz( sys_cmdline, lpCmdLine, sizeof( sys_cmdline ) );


	// done before Com/Sys_Init since we need this for error output
//	Sys_CreateConsole();

	// no abort/retry/fail errors
	SetErrorMode( SEM_FAILCRITICALERRORS );

	// get the initial time base
	Sys_Milliseconds();

#if 0
	// if we find the CD, add a +set cddir xxx command line
	Sys_ScanForCD();
#endif


	Sys_InitStreamThread();

	Com_Init( cmdline );

	NET_Init();

	_getcwd (cwd, sizeof(cwd));
	Com_Printf("Working directory: %s\n", cwd);

	// hide the early console since we've reached the point where we
	// have a working graphics subsystems
	if ( !com_dedicated->integer && !com_viewlog->integer ) {
		Sys_ShowConsole( 0, qfalse );
	}

#ifdef _DEBUG
	if ( sys_monkeySpank ) {
		Cvar_Set("cl_trn", "666");
	}
#endif

    // main game loop
	while( 1 ) {
		// if not running as a game client, sleep a bit
//		if ( g_wv.isMinimized || ( com_dedicated && com_dedicated->integer ) ) {
			Sleep( 5 );
//		}

		// set low precision every frame, because some system calls
		// reset it arbitrarily
//		_controlfp( _PC_24, _MCW_PC );
 
//		startTime = Sys_Milliseconds();

		// make sure mouse and joystick are only called once a frame
		IN_Frame();

		// run the game
		Com_Frame();

//		endTime = Sys_Milliseconds();
//		totalMsec += endTime - startTime;
//		countMsec++;
	}

	// never gets here
	return 0;
}