include/SDL_stdinc.h
author Sam Lantinga <slouken@libsdl.org>
Wed, 21 Jun 2006 07:36:00 +0000
branchSDL-1.3
changeset 1696 3695d3637045
parent 1668 4da1ee79c9af
permissions -rw-r--r--
Fixed bug #256
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2006 Sam Lantinga
     4 
     5     This library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Lesser General Public
     7     License as published by the Free Software Foundation; either
     8     version 2.1 of the License, or (at your option) any later version.
     9 
    10     This library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Lesser General Public License for more details.
    14 
    15     You should have received a copy of the GNU Lesser General Public
    16     License along with this library; if not, write to the Free Software
    17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
    18 
    19     Sam Lantinga
    20     slouken@libsdl.org
    21 */
    22 
    23 /**
    24  * \file SDL_stdinc.h
    25  *
    26  * This is a general header that includes C language support
    27  */
    28 
    29 #ifndef _SDL_stdinc_h
    30 #define _SDL_stdinc_h
    31 
    32 #include "SDL_config.h"
    33 
    34 
    35 #ifdef HAVE_SYS_TYPES_H
    36 #include <sys/types.h>
    37 #endif
    38 #ifdef HAVE_STDIO_H
    39 #include <stdio.h>
    40 #endif
    41 #if defined(STDC_HEADERS)
    42 # include <stdlib.h>
    43 # include <stddef.h>
    44 # include <stdarg.h>
    45 #else
    46 # if defined(HAVE_STDLIB_H)
    47 #  include <stdlib.h>
    48 # elif defined(HAVE_MALLOC_H)
    49 #  include <malloc.h>
    50 # endif
    51 # if defined(HAVE_STDDEF_H)
    52 #  include <stddef.h>
    53 # endif
    54 # if defined(HAVE_STDARG_H)
    55 #  include <stdarg.h>
    56 # endif
    57 #endif
    58 #ifdef HAVE_STRING_H
    59 # if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
    60 #  include <memory.h>
    61 # endif
    62 # include <string.h>
    63 #endif
    64 #ifdef HAVE_STRINGS_H
    65 # include <strings.h>
    66 #endif
    67 #if defined(HAVE_INTTYPES_H)
    68 # include <inttypes.h>
    69 #elif defined(HAVE_STDINT_H)
    70 # include <stdint.h>
    71 #endif
    72 #ifdef HAVE_CTYPE_H
    73 # include <ctype.h>
    74 #endif
    75 #ifdef HAVE_ICONV_H
    76 # include <iconv.h>
    77 #endif
    78 
    79 /* The number of elements in an array */
    80 #define SDL_arraysize(array)	(sizeof(array)/sizeof(array[0]))
    81 #define SDL_TABLESIZE(table)	SDL_arraysize(table)
    82 
    83 /* Basic data types */
    84 typedef enum SDL_bool
    85 {
    86     SDL_FALSE = 0,
    87     SDL_TRUE = 1
    88 } SDL_bool;
    89 
    90 /**
    91  * \typedef Sint8
    92  * \brief A signed 8-bit integer type.
    93  */
    94 typedef int8_t Sint8;
    95 /**
    96  * \typedef Uint8
    97  * \brief An unsigned 8-bit integer type.
    98  */
    99 typedef uint8_t Uint8;
   100 /**
   101  * \typedef Sint16
   102  * \brief A signed 16-bit integer type.
   103  */
   104 typedef int16_t Sint16;
   105 /**
   106  * \typedef Uint16
   107  * \brief An unsigned 16-bit integer type.
   108  */
   109 typedef uint16_t Uint16;
   110 /**
   111  * \typedef Sint32
   112  * \brief A signed 32-bit integer type.
   113  */
   114 typedef int32_t Sint32;
   115 /**
   116  * \typedef Uint32
   117  * \brief An unsigned 32-bit integer type.
   118  */
   119 typedef uint32_t Uint32;
   120 
   121 #ifdef SDL_HAS_64BIT_TYPE
   122 /**
   123  * \typedef Sint64
   124  * \brief A signed 64-bit integer type.
   125  * \warning On platforms without any sort of 64-bit datatype, this is equivalent to Sint32!
   126  */
   127 typedef int64_t Sint64;
   128 /**
   129  * \typedef Uint64
   130  * \brief An unsigned 64-bit integer type.
   131  * \warning On platforms without any sort of 64-bit datatype, this is equivalent to Uint32!
   132  */
   133 typedef uint64_t Uint64;
   134 #else
   135 /* This is really just a hack to prevent the compiler from complaining */
   136 typdef Sint32 Sint64;
   137 typdef Uint32 Uint32;
   138 #endif
   139 
   140 /* Make sure the types really have the right sizes */
   141 #define SDL_COMPILE_TIME_ASSERT(name, x)               \
   142        typedef int SDL_dummy_ ## name[(x) * 2 - 1]
   143 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
   144 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
   145 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
   146 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
   147 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
   148 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
   149 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
   150 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
   151 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
   152 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
   153 
   154 /* Check to make sure enums are the size of ints, for structure packing.
   155    For both Watcom C/C++ and Borland C/C++ the compiler option that makes
   156    enums having the size of an int must be enabled.
   157    This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
   158 */
   159 /* Enable enums always int in CodeWarrior (for MPW use "-enum int") */
   160 #ifdef __MWERKS__
   161 #pragma enumsalwaysint on
   162 #endif
   163 
   164 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
   165 typedef enum
   166 {
   167     DUMMY_ENUM_VALUE
   168 } SDL_DUMMY_ENUM;
   169 
   170 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
   171 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
   172 
   173 #include "begin_code.h"
   174 /* Set up for C function definitions, even when using C++ */
   175 #ifdef __cplusplus
   176 /* *INDENT-OFF* */
   177 extern "C" {
   178 /* *INDENT-ON* */
   179 #endif
   180 
   181 #ifdef HAVE_MALLOC
   182 #define SDL_malloc	malloc
   183 #else
   184 extern DECLSPEC void *SDLCALL SDL_malloc(size_t size);
   185 #endif
   186 
   187 #ifdef HAVE_CALLOC
   188 #define SDL_calloc	calloc
   189 #else
   190 extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size);
   191 #endif
   192 
   193 #ifdef HAVE_REALLOC
   194 #define SDL_realloc	realloc
   195 #else
   196 extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size);
   197 #endif
   198 
   199 #ifdef HAVE_FREE
   200 #define SDL_free	free
   201 #else
   202 extern DECLSPEC void SDLCALL SDL_free(void *mem);
   203 #endif
   204 
   205 #if defined(HAVE_ALLOCA) && !defined(alloca)
   206 # if defined(HAVE_ALLOCA_H)
   207 #  include <alloca.h>
   208 # elif defined(__GNUC__)
   209 #  define alloca __builtin_alloca
   210 # elif defined(_MSC_VER)
   211 #  include <malloc.h>
   212 #  define alloca _alloca
   213 # elif defined(__WATCOMC__)
   214 #  include <malloc.h>
   215 # elif defined(__DMC__)
   216 #  include <stdlib.h>
   217 # elif defined(__AIX__)
   218 #pragma alloca
   219 # elif defined(__MRC__)
   220 void *alloca(unsigned);
   221 # else
   222 char *alloca();
   223 # endif
   224 #endif
   225 #ifdef HAVE_ALLOCA
   226 #define SDL_stack_alloc(type, count)    (type*)alloca(sizeof(type)*count)
   227 #define SDL_stack_free(data)
   228 #else
   229 #define SDL_stack_alloc(type, count)    (type*)SDL_malloc(sizeof(type)*count)
   230 #define SDL_stack_free(data)            SDL_free(data)
   231 #endif
   232 
   233 #ifdef HAVE_GETENV
   234 #define SDL_getenv	getenv
   235 #else
   236 extern DECLSPEC char *SDLCALL SDL_getenv(const char *name);
   237 #endif
   238 
   239 #ifdef HAVE_PUTENV
   240 #define SDL_putenv	putenv
   241 #else
   242 extern DECLSPEC int SDLCALL SDL_putenv(const char *variable);
   243 #endif
   244 
   245 #ifdef HAVE_QSORT
   246 #define SDL_qsort	qsort
   247 #else
   248 extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size,
   249                                        int (*compare) (const void *,
   250                                                        const void *));
   251 #endif
   252 
   253 #ifdef HAVE_ABS
   254 #define SDL_abs		abs
   255 #else
   256 #define SDL_abs(X)	((X) < 0 ? -(X) : (X))
   257 #endif
   258 
   259 #define SDL_min(x, y)	(((x) < (y)) ? (x) : (y))
   260 #define SDL_max(x, y)	(((x) > (y)) ? (x) : (y))
   261 
   262 #ifdef HAVE_CTYPE_H
   263 #define SDL_isdigit(X)  isdigit(X)
   264 #define SDL_isspace(X)  isspace(X)
   265 #define SDL_toupper(X)  toupper(X)
   266 #define SDL_tolower(X)  tolower(X)
   267 #else
   268 #define SDL_isdigit(X)  (((X) >= '0') && ((X) <= '9'))
   269 #define SDL_isspace(X)  (((X) == ' ') || ((X) == '\t') || ((X) == '\r') || ((X) == '\n'))
   270 #define SDL_toupper(X)  (((X) >= 'a') && ((X) <= 'z') ? ('A'+((X)-'a')) : (X))
   271 #define SDL_tolower(X)  (((X) >= 'A') && ((X) <= 'Z') ? ('a'+((X)-'A')) : (X))
   272 #endif
   273 
   274 #ifdef HAVE_MEMSET
   275 #define SDL_memset      memset
   276 #else
   277 extern DECLSPEC void *SDLCALL SDL_memset(void *dst, int c, size_t len);
   278 #endif
   279 #define SDL_zero(x)	SDL_memset(&(x), 0, sizeof((x)))
   280 #define SDL_zerop(x)	SDL_memset((x), 0, sizeof(*(x)))
   281 
   282 #if defined(__GNUC__) && defined(i386)
   283 #define SDL_memset4(dst, val, len)				\
   284 do {								\
   285 	int u0, u1, u2;						\
   286 	__asm__ __volatile__ (					\
   287 		"cld\n\t"					\
   288 		"rep ; stosl\n\t"				\
   289 		: "=&D" (u0), "=&a" (u1), "=&c" (u2)		\
   290 		: "0" (dst), "1" (val), "2" ((Uint32)(len))	\
   291 		: "memory" );					\
   292 } while(0)
   293 #endif
   294 #ifndef SDL_memset4
   295 #define SDL_memset4(dst, val, len)		\
   296 do {						\
   297 	unsigned _count = (len);		\
   298 	unsigned _n = (_count + 3) / 4;		\
   299 	Uint32 *_p = (Uint32 *)(dst);		\
   300 	Uint32 _val = (val);			\
   301         switch (_count % 4) {			\
   302         case 0: do {    *_p++ = _val;		\
   303         case 3:         *_p++ = _val;		\
   304         case 2:         *_p++ = _val;		\
   305         case 1:         *_p++ = _val;		\
   306 		} while ( --_n );		\
   307 	}					\
   308 } while(0)
   309 #endif
   310 
   311 #if defined(__GNUC__) && defined(i386)
   312 #define SDL_memcpy(dst, src, len)					  \
   313 do {									  \
   314 	int u0, u1, u2;						  	  \
   315 	__asm__ __volatile__ (						  \
   316 		"cld\n\t"						  \
   317 		"rep ; movsl\n\t"					  \
   318 		"testb $2,%b4\n\t"					  \
   319 		"je 1f\n\t"						  \
   320 		"movsw\n"						  \
   321 		"1:\ttestb $1,%b4\n\t"					  \
   322 		"je 2f\n\t"						  \
   323 		"movsb\n"						  \
   324 		"2:"							  \
   325 		: "=&c" (u0), "=&D" (u1), "=&S" (u2)			  \
   326 		: "0" ((unsigned)(len)/4), "q" (len), "1" (dst),"2" (src) \
   327 		: "memory" );						  \
   328 } while(0)
   329 #endif
   330 #ifndef SDL_memcpy
   331 #ifdef HAVE_MEMCPY
   332 #define SDL_memcpy      memcpy
   333 #elif defined(HAVE_BCOPY)
   334 #define SDL_memcpy(d, s, n)	bcopy((s), (d), (n))
   335 #else
   336 extern DECLSPEC void *SDLCALL SDL_memcpy(void *dst, const void *src,
   337                                          size_t len);
   338 #endif
   339 #endif
   340 
   341 #if defined(__GNUC__) && defined(i386)
   342 #define SDL_memcpy4(dst, src, len)				\
   343 do {								\
   344 	int ecx, edi, esi;					\
   345 	__asm__ __volatile__ (					\
   346 		"cld\n\t"					\
   347 		"rep ; movsl"					\
   348 		: "=&c" (ecx), "=&D" (edi), "=&S" (esi)		\
   349 		: "0" ((unsigned)(len)), "1" (dst), "2" (src)	\
   350 		: "memory" );					\
   351 } while(0)
   352 #endif
   353 #ifndef SDL_memcpy4
   354 #define SDL_memcpy4(dst, src, len)	SDL_memcpy(dst, src, (len) << 2)
   355 #endif
   356 
   357 #if defined(__GNUC__) && defined(i386)
   358 #define SDL_revcpy(dst, src, len)			\
   359 do {							\
   360 	int u0, u1, u2;					\
   361 	char *dstp = (char *)(dst);			\
   362 	char *srcp = (char *)(src);			\
   363 	int n = (len);					\
   364 	if ( n >= 4 ) {					\
   365 	__asm__ __volatile__ (				\
   366 		"std\n\t"				\
   367 		"rep ; movsl\n\t"			\
   368 		: "=&c" (u0), "=&D" (u1), "=&S" (u2)	\
   369 		: "0" (n >> 2),				\
   370 		  "1" (dstp+(n-4)), "2" (srcp+(n-4))	\
   371 		: "memory" );				\
   372 	}						\
   373 	switch (n & 3) {				\
   374 		case 3: dstp[2] = srcp[2];		\
   375 		case 2: dstp[1] = srcp[1];		\
   376 		case 1: dstp[0] = srcp[0];		\
   377 			break;				\
   378 		default:				\
   379 			break;				\
   380 	}						\
   381 } while(0)
   382 #endif
   383 #ifndef SDL_revcpy
   384 extern DECLSPEC void *SDLCALL SDL_revcpy(void *dst, const void *src,
   385                                          size_t len);
   386 #endif
   387 
   388 #ifdef HAVE_MEMMOVE
   389 #define SDL_memmove     memmove
   390 #elif defined(HAVE_BCOPY)
   391 #define SDL_memmove(d, s, n)	bcopy((s), (d), (n))
   392 #else
   393 #define SDL_memmove(dst, src, len)			\
   394 do {							\
   395 	if ( dst < src ) {				\
   396 		SDL_memcpy(dst, src, len);		\
   397 	} else {					\
   398 		SDL_revcpy(dst, src, len);		\
   399 	}						\
   400 } while(0)
   401 #endif
   402 
   403 #ifdef HAVE_MEMCMP
   404 #define SDL_memcmp      memcmp
   405 #else
   406 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2,
   407                                        size_t len);
   408 #endif
   409 
   410 #ifdef HAVE_STRLEN
   411 #define SDL_strlen      strlen
   412 #else
   413 extern DECLSPEC size_t SDLCALL SDL_strlen(const char *string);
   414 #endif
   415 
   416 #ifdef HAVE_STRLCPY
   417 #define SDL_strlcpy     strlcpy
   418 #else
   419 extern DECLSPEC size_t SDLCALL SDL_strlcpy(char *dst, const char *src,
   420                                            size_t maxlen);
   421 #endif
   422 
   423 #ifdef HAVE_STRLCAT
   424 #define SDL_strlcat    strlcat
   425 #else
   426 extern DECLSPEC size_t SDLCALL SDL_strlcat(char *dst, const char *src,
   427                                            size_t maxlen);
   428 #endif
   429 
   430 #ifdef HAVE_STRDUP
   431 #define SDL_strdup     strdup
   432 #else
   433 extern DECLSPEC char *SDLCALL SDL_strdup(const char *string);
   434 #endif
   435 
   436 #ifdef HAVE__STRREV
   437 #define SDL_strrev      _strrev
   438 #else
   439 extern DECLSPEC char *SDLCALL SDL_strrev(char *string);
   440 #endif
   441 
   442 #ifdef HAVE__STRUPR
   443 #define SDL_strupr      _strupr
   444 #else
   445 extern DECLSPEC char *SDLCALL SDL_strupr(char *string);
   446 #endif
   447 
   448 #ifdef HAVE__STRLWR
   449 #define SDL_strlwr      _strlwr
   450 #else
   451 extern DECLSPEC char *SDLCALL SDL_strlwr(char *string);
   452 #endif
   453 
   454 #ifdef HAVE_STRCHR
   455 #define SDL_strchr      strchr
   456 #elif defined(HAVE_INDEX)
   457 #define SDL_strchr      index
   458 #else
   459 extern DECLSPEC char *SDLCALL SDL_strchr(const char *string, int c);
   460 #endif
   461 
   462 #ifdef HAVE_STRRCHR
   463 #define SDL_strrchr     strrchr
   464 #elif defined(HAVE_RINDEX)
   465 #define SDL_strrchr     rindex
   466 #else
   467 extern DECLSPEC char *SDLCALL SDL_strrchr(const char *string, int c);
   468 #endif
   469 
   470 #ifdef HAVE_STRSTR
   471 #define SDL_strstr      strstr
   472 #else
   473 extern DECLSPEC char *SDLCALL SDL_strstr(const char *haystack,
   474                                          const char *needle);
   475 #endif
   476 
   477 #ifdef HAVE_ITOA
   478 #define SDL_itoa        itoa
   479 #else
   480 #define SDL_itoa(value, string, radix)	SDL_ltoa((long)value, string, radix)
   481 #endif
   482 
   483 #ifdef HAVE__LTOA
   484 #define SDL_ltoa        _ltoa
   485 #else
   486 extern DECLSPEC char *SDLCALL SDL_ltoa(long value, char *string, int radix);
   487 #endif
   488 
   489 #ifdef HAVE__UITOA
   490 #define SDL_uitoa       _uitoa
   491 #else
   492 #define SDL_uitoa(value, string, radix)	SDL_ultoa((long)value, string, radix)
   493 #endif
   494 
   495 #ifdef HAVE__ULTOA
   496 #define SDL_ultoa       _ultoa
   497 #else
   498 extern DECLSPEC char *SDLCALL SDL_ultoa(unsigned long value, char *string,
   499                                         int radix);
   500 #endif
   501 
   502 #ifdef HAVE_STRTOL
   503 #define SDL_strtol      strtol
   504 #else
   505 extern DECLSPEC long SDLCALL SDL_strtol(const char *string, char **endp,
   506                                         int base);
   507 #endif
   508 
   509 #ifdef HAVE_STRTOUL
   510 #define SDL_strtoul      strtoul
   511 #else
   512 extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *string,
   513                                                   char **endp, int base);
   514 #endif
   515 
   516 #ifdef SDL_HAS_64BIT_TYPE
   517 
   518 #ifdef HAVE__I64TOA
   519 #define SDL_lltoa       _i64toa
   520 #else
   521 extern DECLSPEC char *SDLCALL SDL_lltoa(Sint64 value, char *string,
   522                                         int radix);
   523 #endif
   524 
   525 #ifdef HAVE__UI64TOA
   526 #define SDL_ulltoa      _ui64toa
   527 #else
   528 extern DECLSPEC char *SDLCALL SDL_ulltoa(Uint64 value, char *string,
   529                                          int radix);
   530 #endif
   531 
   532 #ifdef HAVE_STRTOLL
   533 #define SDL_strtoll     strtoll
   534 #else
   535 extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *string, char **endp,
   536                                            int base);
   537 #endif
   538 
   539 #ifdef HAVE_STRTOULL
   540 #define SDL_strtoull     strtoull
   541 #else
   542 extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *string, char **endp,
   543                                             int base);
   544 #endif
   545 
   546 #endif /* SDL_HAS_64BIT_TYPE */
   547 
   548 #ifdef HAVE_STRTOD
   549 #define SDL_strtod      strtod
   550 #else
   551 extern DECLSPEC double SDLCALL SDL_strtod(const char *string, char **endp);
   552 #endif
   553 
   554 #ifdef HAVE_ATOI
   555 #define SDL_atoi        atoi
   556 #else
   557 #define SDL_atoi(X)     SDL_strtol(X, NULL, 0)
   558 #endif
   559 
   560 #ifdef HAVE_ATOF
   561 #define SDL_atof        atof
   562 #else
   563 #define SDL_atof(X)     SDL_strtod(X, NULL)
   564 #endif
   565 
   566 #ifdef HAVE_STRCMP
   567 #define SDL_strcmp      strcmp
   568 #else
   569 extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2);
   570 #endif
   571 
   572 #ifdef HAVE_STRNCMP
   573 #define SDL_strncmp     strncmp
   574 #else
   575 extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2,
   576                                         size_t maxlen);
   577 #endif
   578 
   579 #ifdef HAVE_STRCASECMP
   580 #define SDL_strcasecmp  strcasecmp
   581 #elif defined(HAVE__STRICMP)
   582 #define SDL_strcasecmp  _stricmp
   583 #else
   584 extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1,
   585                                            const char *str2);
   586 #endif
   587 
   588 #ifdef HAVE_STRNCASECMP
   589 #define SDL_strncasecmp strncasecmp
   590 #elif defined(HAVE__STRNICMP)
   591 #define SDL_strncasecmp _strnicmp
   592 #else
   593 extern DECLSPEC int SDLCALL SDL_strncasecmp(const char *str1,
   594                                             const char *str2, size_t maxlen);
   595 #endif
   596 
   597 #ifdef HAVE_SSCANF
   598 #define SDL_sscanf      sscanf
   599 #else
   600 extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, const char *fmt,
   601                                        ...);
   602 #endif
   603 
   604 #ifdef HAVE_SNPRINTF
   605 #define SDL_snprintf    snprintf
   606 #else
   607 extern DECLSPEC int SDLCALL SDL_snprintf(char *text, size_t maxlen,
   608                                          const char *fmt, ...);
   609 #endif
   610 
   611 #ifdef HAVE_VSNPRINTF
   612 #define SDL_vsnprintf   vsnprintf
   613 #else
   614 extern DECLSPEC int SDLCALL SDL_vsnprintf(char *text, size_t maxlen,
   615                                           const char *fmt, va_list ap);
   616 #endif
   617 
   618 /* The SDL implementation of iconv() returns these error codes */
   619 #define SDL_ICONV_ERROR		(size_t)-1
   620 #define SDL_ICONV_E2BIG		(size_t)-2
   621 #define SDL_ICONV_EILSEQ	(size_t)-3
   622 #define SDL_ICONV_EINVAL	(size_t)-4
   623 
   624 #ifdef HAVE_ICONV
   625 #define SDL_iconv_t     iconv_t
   626 #define SDL_iconv_open  iconv_open
   627 #define SDL_iconv_close iconv_close
   628 extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, char **inbuf,
   629                                          size_t * inbytesleft, char **outbuf,
   630                                          size_t * outbytesleft);
   631 #else
   632 typedef struct _SDL_iconv_t *SDL_iconv_t;
   633 extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode,
   634                                                    const char *fromcode);
   635 extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
   636 extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, char **inbuf,
   637                                          size_t * inbytesleft, char **outbuf,
   638                                          size_t * outbytesleft);
   639 #endif
   640 /* This function converts a string between encodings in one pass, returning a
   641    string that must be freed with SDL_free() or NULL on error.
   642 */
   643 extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
   644                                                const char *fromcode,
   645                                                char *inbuf,
   646                                                size_t inbytesleft);
   647 #define SDL_iconv_utf8_ascii(S)		SDL_iconv_string("ASCII", "UTF-8", S, SDL_strlen(S)+1)
   648 #define SDL_iconv_utf8_latin1(S)	SDL_iconv_string("LATIN1", "UTF-8", S, SDL_strlen(S)+1)
   649 #define SDL_iconv_utf8_ucs2(S)		(Uint16 *)SDL_iconv_string("UCS-2", "UTF-8", S, SDL_strlen(S)+1)
   650 #define SDL_iconv_utf8_ucs4(S)		(Uint32 *)SDL_iconv_string("UCS-4", "UTF-8", S, SDL_strlen(S)+1)
   651 
   652 /* Ends C function definitions when using C++ */
   653 #ifdef __cplusplus
   654 /* *INDENT-OFF* */
   655 }
   656 /* *INDENT-ON* */
   657 #endif
   658 #include "close_code.h"
   659 
   660 #endif /* _SDL_stdinc_h */
   661 
   662 /* vi: set ts=4 sw=4 expandtab: */