/*

SDL - Simple DirectMedia Layer

Copyright (C) 1997-2006 Sam Lantinga

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Lesser General Public

License as published by the Free Software Foundation; either

version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public

License along with this library; if not, write to the Free Software

Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

Sam Lantinga

slouken@libsdl.org

*/

/* This file contains portable string manipulation functions for SDL */

#ifndef _SDL_string_h

#define _SDL_string_h

#include "SDL_config.h"

#ifdef HAVE_STDIO_H

#include <stdio.h> /* For snprintf() and friends */

#endif

#ifdef HAVE_STRING_H

#include <string.h>

#endif

#include "SDL_types.h"

#include "SDL_stdarg.h"

#include "begin_code.h"

/* Set up for C function definitions, even when using C++ */

#ifdef __cplusplus

extern "C" {

#endif

#ifdef HAVE_MEMSET

#define SDL_memset memset

#else

extern DECLSPEC void * SDLCALL SDL_memset(void *dst, int c, size_t len);

#endif

#if defined(__GNUC__) && defined(i386)

#define SDL_memset4(dst, val, len) \

do { \

int u0, u1, u2; \

__asm__ __volatile__ ( \

"cld\n\t" \

"rep ; stosl\n\t" \

: "=&D" (u0), "=&a" (u1), "=&c" (u2) \

: "0" (dst), "1" (val), "2" ((Uint32)(len)) \

: "memory" ); \

} while(0)

#endif

#ifndef SDL_memset4

#define SDL_memset4(dst, val, len) \

do { \

unsigned _count = (len); \

unsigned _n = (_count + 3) / 4; \

Uint32 *_p = (Uint32 *)(dst); \

Uint32 _val = (val); \

switch (_count % 4) { \

case 0: do { *_p++ = _val; \

case 3: *_p++ = _val; \

case 2: *_p++ = _val; \

case 1: *_p++ = _val; \

} while ( --_n ); \

} \

} while(0)

#endif

#if defined(__GNUC__) && defined(i386)

#define SDL_memcpy(dst, src, len) \

do { \

int u0, u1, u2; \

__asm__ __volatile__ ( \

"cld\n\t" \

"rep ; movsl\n\t" \

"testb $2,%b4\n\t" \

"je 1f\n\t" \

"movsw\n" \

"1:\ttestb $1,%b4\n\t" \

"je 2f\n\t" \

"movsb\n" \

"2:" \

: "=&c" (u0), "=&D" (u1), "=&S" (u2) \

: "0" ((unsigned)(len)/4), "q" (len), "1" (dst),"2" (src) \

: "memory" ); \

} while(0)

#endif

#ifndef SDL_memcpy

#ifdef HAVE_MEMCPY

#define SDL_memcpy memcpy

#else

extern DECLSPEC void * SDLCALL SDL_memcpy(void *dst, const void *src, size_t len);

#endif

#endif

#if defined(__GNUC__) && defined(i386)

#define SDL_memcpy4(dst, src, len) \

do { \

int ecx, edi, esi; \

__asm__ __volatile__ ( \

"cld\n\t" \

"rep ; movsl" \

: "=&c" (ecx), "=&D" (edi), "=&S" (esi) \

: "0" ((unsigned)(len)), "1" (dst), "2" (src) \

: "memory" ); \

} while(0)

#endif

#ifndef SDL_memcpy4

#define SDL_memcpy4(dst, src, len) SDL_memcpy(dst, src, (len) << 2)

#endif

#if defined(__GNUC__) && defined(i386)

#define SDL_revcpy(dst, src, len) \

do { \

int u0, u1, u2; \

char *dstp = (char *)(dst); \

char *srcp = (char *)(src); \

int n = (len); \

if ( n >= 4 ) { \

__asm__ __volatile__ ( \

"std\n\t" \

"rep ; movsl\n\t" \

: "=&c" (u0), "=&D" (u1), "=&S" (u2) \

: "0" (n >> 2), \

"1" (dstp+(n-4)), "2" (srcp+(n-4)) \

: "memory" ); \

} \

switch (n & 3) { \

case 3: dstp[2] = srcp[2]; \

case 2: dstp[1] = srcp[1]; \

case 1: dstp[0] = srcp[0]; \

break; \

default: \

break; \

} \

} while(0)

#endif

#ifndef SDL_revcpy

extern DECLSPEC void * SDLCALL SDL_revcpy(void *dst, const void *src, size_t len);

#endif

#ifdef HAVE_MEMMOVE

#define SDL_memmove memmove

#else

#define SDL_memmove(dst, src, len) \

do { \

if ( dst < src ) { \

SDL_memcpy(dst, src, len); \

} else { \

SDL_revcpy(dst, src, len); \

} \

} while(0)

#endif

#ifdef HAVE_MEMCMP

#define SDL_memcmp memcmp

#else

extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);

#endif

#ifdef HAVE_STRLEN

#define SDL_strlen strlen

#else

extern DECLSPEC size_t SDLCALL SDL_strlen(const char *string);

#endif

#ifdef HAVE_STRCPY

#define SDL_strcpy strcpy

#else

extern DECLSPEC char * SDLCALL SDL_strcpy(char *dst, const char *src);

#endif

#ifdef HAVE_STRNCPY

#define SDL_strncpy strncpy

#else

extern DECLSPEC char * SDLCALL SDL_strncpy(char *dst, const char *src, size_t maxlen);

#endif

#ifdef HAVE_STRCAT

#define SDL_strcat strcat

#else

#define SDL_strcat(dst, src) (SDL_strcpy(dst+SDL_strlen(dst), src), dst)

#endif

#ifdef HAVE_STRNCAT

#define SDL_strncat strncat

#else

#define SDL_strncat(dst, src, n) (SDL_strncpy(dst+SDL_strlen(dst), src, n), dst)

#endif

#ifdef HAVE__STRREV

#define SDL_strrev _strrev

#else

extern DECLSPEC char * SDLCALL SDL_strrev(char *string);

#endif

#ifdef HAVE__STRUPR

#define SDL_strupr _strupr

#else

extern DECLSPEC char * SDLCALL SDL_strupr(char *string);

#endif

#ifdef HAVE__STRLWR

#define SDL_strlwr _strlwr

#else

extern DECLSPEC char * SDLCALL SDL_strlwr(char *string);

#endif

#ifdef HAVE_STRCHR

#define SDL_strchr strchr

#else

extern DECLSPEC char * SDLCALL SDL_strchr(const char *string, int c);

#endif

#ifdef HAVE_STRRCHR

#define SDL_strrchr strrchr

#else

extern DECLSPEC char * SDLCALL SDL_strrchr(const char *string, int c);

#endif

#ifdef HAVE_STRSTR

#define SDL_strstr strstr

#else

extern DECLSPEC char * SDLCALL SDL_strstr(const char *haystack, const char *needle);

#endif

#ifdef HAVE_ITOA

#define SDL_itoa itoa

#else

#define SDL_itoa(value, string, radix) SDL_ltoa((long)value, string, radix)

#endif

#ifdef HAVE__LTOA

#define SDL_ltoa _ltoa

#else

extern DECLSPEC char * SDLCALL SDL_ltoa(long value, char *string, int radix);

#endif

#ifdef HAVE__UITOA

#define SDL_uitoa _uitoa

#else

#define SDL_uitoa(value, string, radix) SDL_ultoa((long)value, string, radix)

#endif

#ifdef HAVE__ULTOA

#define SDL_ultoa _ultoa

#else

extern DECLSPEC char * SDLCALL SDL_ultoa(unsigned long value, char *string, int radix);

#endif

#ifdef HAVE_STRTOL

#define SDL_strtol strtol

#else

extern DECLSPEC long SDLCALL SDL_strtol(const char *string, char **endp, int base);

#endif

#ifdef SDL_HAS_64BIT_TYPE

#ifdef HAVE__I64TOA

#define SDL_lltoa _i64toa

#else

extern DECLSPEC char* SDLCALL SDL_lltoa(Sint64 value, char *string, int radix);

#endif

#ifdef HAVE__UI64TOA

#define SDL_ulltoa _ui64toa

#else

extern DECLSPEC char* SDLCALL SDL_ulltoa(Uint64 value, char *string, int radix);

#endif

#ifdef HAVE_STRTOLL

#define SDL_strtoll strtoll

#else

extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *string, char **endp, int base);

#endif

#endif /* SDL_HAS_64BIT_TYPE */

#ifdef HAVE_STRCMP

#define SDL_strcmp strcmp

#else

extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2);

#endif

#ifdef HAVE_STRNCMP

#define SDL_strncmp strncmp

#else

extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen);

#endif

#if defined(HAVE_STRICMP) && !defined(HAVE_STRCASECMP)

#define strcasecmp stricmp

#define HAVE_STRCASECMP

#endif

#ifdef HAVE_STRCASECMP

#define SDL_strcasecmp strcasecmp

#else

extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2);

#endif

#ifdef HAVE_SSCANF

#define SDL_sscanf sscanf

#else

extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, const char *fmt, ...);

#endif

#ifdef HAVE_SNPRINTF

#define SDL_snprintf snprintf

#else

extern DECLSPEC int SDLCALL SDL_snprintf(char *text, size_t maxlen, const char *fmt, ...);

#endif

#ifdef HAVE_VSNPRINTF

#define SDL_vsnprintf vsnprintf

#else

extern DECLSPEC int SDLCALL SDL_vsnprintf(char *text, size_t maxlen, const char *fmt, va_list ap);

#endif

/* Ends C function definitions when using C++ */

#ifdef __cplusplus

}

#endif

#include "close_code.h"

#endif /* _SDL_string_h */