SDL_string.h
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/*
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
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#ifdef HAVE_MEMSET
#define SDL_memset memset
#else
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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
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#ifdef HAVE_MEMCPY
#define SDL_memcpy memcpy
#else
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extern DECLSPEC void * SDLCALL SDL_memcpy(void *dst, const void *src, size_t len);
#endif
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#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
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#ifdef HAVE_MEMMOVE
#define SDL_memmove memmove
#else
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#define SDL_memmove(dst, src, len) \
do { \
if ( dst < src ) { \
SDL_memcpy(dst, src, len); \
} else { \
SDL_revcpy(dst, src, len); \
} \
} while(0)
#endif
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#ifdef HAVE_MEMCMP
#define SDL_memcmp memcmp
#else
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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
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#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
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#ifdef HAVE_STRDUP
#define SDL_strdup strdup
#else
extern DECLSPEC char * SDLCALL SDL_strdup(const char *string);
#endif
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#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 */
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#ifdef HAVE_STRTOD
#define SDL_strtod strtod
#else
extern DECLSPEC double SDLCALL SDL_strtod(const char *string, char **endp);
#endif
#ifdef HAVE_ATOI
#define SDL_atoi atoi
#else
#define SDL_atoi(X) SDL_strtol(X, NULL, 0)
#endif
#ifdef HAVE_ATOF
#define SDL_atof atof
#else
#define SDL_atof(X) SDL_strtod(X, NULL)
#endif
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#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 */