util.cpp File Reference

#include <random>
#include "stratagus.h"
#include "util.h"
#include "SDL.h"
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <malloc.h>
#include <windows.h>
#include <intrin.h>
#include "st_backtrace.h"
#include <string.h>

util.cpp - General utilites.
unsigned	SyncRandSeed
uint32_t	FileChecksums = 0
	sync random seed value. More...
static std::random_device	dev
int	opterr = 1
int	optind = 1
int	optopt
char *	optarg
void	InitSyncRand ()
	checksums of all loaded lua files More...
int	SyncRand ()
	Initialize the syncron rand. More...
int	SyncRand (int max)
	Syncron rand. More...
static std::mt19937	rng_engine (dev())
static std::uniform_int_distribution< std::mt19937::result_type >	rng_dist (0, RAND_MAX)
int	MyRand ()
	Syncron rand. More...
long	isqrt (long num)
	Compute a square root using ints. More...
uint32_t	fletcher32 (const std::string &content)
errno_t	strcpy_s (char *dst, size_t dstsize, const char *src)
size_t	strnlen (const char *str, size_t strsize)
	determine length of a fixed-length string More...
errno_t	strncpy_s (char *dst, size_t dstsize, const char *src, size_t count)
errno_t	strcat_s (char *dst, size_t dstsize, const char *src)
char *	strcasestr (const char *a, const char *b)
	case insensitive strstr More...
static void	getopt_err (const char *argv0, const char *str, char opt)
int	getopt (int argc, char *const *argv, const char *opts)
int	GetClipboard (std::string &str)
void	SetClipboard (std::string &str)
int	UTF8GetPrev (const std::string &text, int curpos)
int	UTF8GetNext (const std::string &text, int curpos)
void	PrintLocation (const char *file, int line, const char *funcName)
void	AbortAt (const char *file, int line, const char *funcName, const char *conditionStr)
void	PrintOnStdOut (const char *format,...)
bool	supportsSSE2 ()
bool	supportsAVX ()
void *	aligned_malloc (size_t alignment, size_t size)
void	aligned_free (void *block)

Function Documentation

AbortAt()

void AbortAt	(	const char *	file,
		int	line,
		const char *	funcName,
		const char *	conditionStr
	)

aligned_free()

void aligned_free

(

void *

block

)

aligned_malloc()

void* aligned_malloc	(	size_t	alignment,
		size_t	size
	)

fletcher32()

uint32_t fletcher32

(

const std::string &

content

)

GetClipboard()

int GetClipboard

(

std::string &

str

)

Paste text from the clipboard

getopt()

int getopt	(	int	argc,
		char *const *	argv,
		const char *	opts
	)

getopt_err()

static void getopt_err ( const char *  argv0, const char *  str, char  opt  )

static

InitSyncRand()

void InitSyncRand

(

)

checksums of all loaded lua files

Inititalize sync rand seed.

isqrt()

long isqrt

(

long

num

)

Compute a square root using ints.

Compute a square root using ints

Uses John Halleck's method, see http://www.cc.utah.edu/~nahaj/factoring/isqrt.legalize.c.html

Parameters

num	Calculate the square root of this number

Returns

The integer square root.

MyRand()

int MyRand

(

)

Syncron rand.

rand only used on this computer.

PrintLocation()

void PrintLocation	(	const char *	file,
		int	line,
		const char *	funcName
	)

PrintOnStdOut()

void PrintOnStdOut	(	const char *	format,
			...
	)

rng_dist()

static std::uniform_int_distribution<std::mt19937::result_type> rng_dist ( 0  , RAND_MAX    )

static

rng_engine()

static std::mt19937 rng_engine ( dev()  )

static

SetClipboard()

void SetClipboard

(

std::string &

str

)

strcasestr()

char* strcasestr	(	const char *	a,
		const char *	b
	)

case insensitive strstr

Case insensitive version of strstr

Parameters

a	String to search in
b	Substring to search for

Returns

Pointer to first occurrence of b or NULL if not found.

strcat_s()

errno_t strcat_s	(	char *	dst,
		size_t	dstsize,
		const char *	src
	)

strcpy_s()

errno_t strcpy_s	(	char *	dst,
		size_t	dstsize,
		const char *	src
	)

strncpy_s()

errno_t strncpy_s	(	char *	dst,
		size_t	dstsize,
		const char *	src,
		size_t	count
	)

strnlen()

size_t strnlen	(	const char *	str,
		size_t	strsize
	)

determine length of a fixed-length string

supportsAVX()

bool supportsAVX

(

)

supportsSSE2()

bool supportsSSE2

(

)

SyncRand() [1/2]

int SyncRand

(

)

Initialize the syncron rand.

Synchronized random number.

Note

This random value must be same on all machines in network game. Very simple random generations, enough for us.

SyncRand() [2/2]

int SyncRand

(

int

max

)

Syncron rand.

Synchronized random number.

Parameters

max	Max value of random number to return

UTF8GetNext()

int UTF8GetNext	(	const std::string &	text,
		int	curpos
	)

UTF8GetPrev()

int UTF8GetPrev	(	const std::string &	text,
		int	curpos
	)

Variable Documentation

dev

std::random_device dev

static

FileChecksums

uint32_t FileChecksums = 0

sync random seed value.

Sync random seed value.

optarg

char* optarg

opterr

int opterr = 1

Standard implementation of getopt(3).

One extension: If the first character of the optionsstring is a ':' the error return for 'argument required' is a ':' not a '?'. This makes it easier to differentiate between an 'illegal option' and an 'argument required' error.

optind

int optind = 1

optopt

int optopt

SyncRandSeed

unsigned SyncRandSeed