mirror of
https://github.com/libsdl-org/SDL.git
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SDL_stdinc.h: Tons of documentation updates.
Almost everything in this header is now documented! The remaining gaps are literal C runtime wrappers like SDL_strdup, and the analyzer macros like SDL_INOUT_Z_CAP.
This commit is contained in:
Ryan C. Gordon
parent
a0864799f2
commit
b83dd793fd
1 changed files with 530 additions and 27 deletions
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@ -88,7 +88,23 @@ void *alloca(size_t);
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# endif
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#endif
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#ifdef SIZE_MAX
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#ifdef SDL_WIKI_DOCUMENTATION_SECTION
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/**
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* The largest value that a `size_t` can hold for the target platform.
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*
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* `size_t` is generally the same size as a pointer in modern times, but this
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* can get weird on very old and very esoteric machines. For example, on
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* a 16-bit Intel 286, you might have a 32-bit "far" pointer (16-bit segment
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* plus 16-bit offset), but `size_t` is 16 bits, because it can only deal
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* with the offset into an individual segment.
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*
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* In modern times, it's generally expected to cover an entire linear address
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* space. But be careful!
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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# define SDL_SIZE_MAX SIZE_MAX
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#elif defined(SIZE_MAX)
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# define SDL_SIZE_MAX SIZE_MAX
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#else
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# define SDL_SIZE_MAX ((size_t) -1)
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@ -170,6 +186,8 @@ void *alloca(size_t);
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* #define LOG_ERROR(X) OutputDebugString(SDL_STRINGIFY_ARG(__FUNCTION__) ": " X "\n")`
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* ```
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*
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* \param arg the text to turn into a string literal.
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_STRINGIFY_ARG(arg) #arg
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@ -460,6 +478,180 @@ typedef Sint64 SDL_Time;
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/* @} *//* Floating-point constants */
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#ifdef SDL_WIKI_DOCUMENTATION_SECTION
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/**
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* A printf-formatting string for an Sint64 value.
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*
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* Use it like this:
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*
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* ```c
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* SDL_Log("There are %" SDL_PRIs64 " bottles of beer on the wall.", bottles);
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* ```
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_PRIs64 "lld"
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/**
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* A printf-formatting string for a Uint64 value.
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*
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* Use it like this:
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*
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* ```c
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* SDL_Log("There are %" SDL_PRIu64 " bottles of beer on the wall.", bottles);
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* ```
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_PRIu64 "llu"
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/**
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* A printf-formatting string for a Uint64 value as lower-case hexadecimal.
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*
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* Use it like this:
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*
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* ```c
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* SDL_Log("There are %" SDL_PRIx64 " bottles of beer on the wall.", bottles);
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* ```
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_PRIx64 "llx"
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/**
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* A printf-formatting string for a Uint64 value as upper-case hexadecimal.
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*
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* Use it like this:
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*
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* ```c
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* SDL_Log("There are %" SDL_PRIX64 " bottles of beer on the wall.", bottles);
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* ```
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_PRIX64 "llX"
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/**
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* A printf-formatting string for an Sint32 value.
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*
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* Use it like this:
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*
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* ```c
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* SDL_Log("There are %" SDL_PRIs32 " bottles of beer on the wall.", bottles);
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* ```
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_PRIs32 "d"
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/**
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* A printf-formatting string for a Uint32 value.
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*
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* Use it like this:
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*
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* ```c
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* SDL_Log("There are %" SDL_PRIu32 " bottles of beer on the wall.", bottles);
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* ```
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_PRIu32 "u"
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/**
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* A printf-formatting string for a Uint32 value as lower-case hexadecimal.
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*
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* Use it like this:
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*
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* ```c
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* SDL_Log("There are %" SDL_PRIx32 " bottles of beer on the wall.", bottles);
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* ```
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_PRIx32 "x"
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/**
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* A printf-formatting string for a Uint32 value as upper-case hexadecimal.
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*
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* Use it like this:
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*
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* ```c
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* SDL_Log("There are %" SDL_PRIX32 " bottles of beer on the wall.", bottles);
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* ```
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_PRIX32 "X"
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/**
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* A printf-formatting string prefix for a `long long` value.
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*
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* This is just the prefix! You probably actually want SDL_PRILLd,
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* SDL_PRILLu, SDL_PRILLx, or SDL_PRILLX instead.
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*
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* Use it like this:
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*
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* ```c
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* SDL_Log("There are %" SDL_PRILL_PREFIX "d bottles of beer on the wall.", bottles);
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* ```
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_PRILL_PREFIX "ll"
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/**
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* A printf-formatting string for a `long long` value.
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*
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* Use it like this:
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*
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* ```c
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* SDL_Log("There are %" SDL_PRILLd " bottles of beer on the wall.", bottles);
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* ```
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_PRILLd SDL_PRILL_PREFIX "d"
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/**
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* A printf-formatting string for a `unsigned long long` value.
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*
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* Use it like this:
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*
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* ```c
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* SDL_Log("There are %" SDL_PRILLu " bottles of beer on the wall.", bottles);
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* ```
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_PRILLu SDL_PRILL_PREFIX "u"
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/**
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* A printf-formatting string for an `unsigned long long` value as lower-case hexadecimal.
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*
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* Use it like this:
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*
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* ```c
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* SDL_Log("There are %" SDL_PRILLx " bottles of beer on the wall.", bottles);
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* ```
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_PRILLx SDL_PRILL_PREFIX "x"
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/**
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* A printf-formatting string for an `unsigned long long` value as upper-case hexadecimal.
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*
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* Use it like this:
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*
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* ```c
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* SDL_Log("There are %" SDL_PRILLX " bottles of beer on the wall.", bottles);
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* ```
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_PRILLX SDL_PRILL_PREFIX "X"
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#endif /* SDL_WIKI_DOCUMENTATION_SECTION */
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/* Make sure we have macros for printing width-based integers.
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* <inttypes.h> should define these but this is not true all platforms.
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* (for example win32) */
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@ -705,7 +897,50 @@ extern "C" {
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} while (0)
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#ifndef SDL_DISABLE_ALLOCA
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#ifdef SDL_WIKI_DOCUMENTATION_SECTION
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/**
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* Allocate memory on the stack (maybe).
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*
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* If SDL knows how to access alloca() on the current platform, it will use
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* it to stack-allocate memory here. If it doesn't, it will use SDL_malloc()
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* to heap-allocate memory.
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*
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* Since this might not be stack memory at all, it's important that you
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* check the returned pointer for NULL, and that you call SDL_stack_free
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* on the memory when done with it. Since this might be stack memory, it's
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* important that you don't allocate large amounts of it, or allocate in
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* a loop without returning from the function, so the stack doesn't overflow.
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*
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* \param type the datatype of the memory to allocate.
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* \param count the number of `type` objects to allocate.
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* \returns newly-allocated memory, or NULL on failure.
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*
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* \threadsafety It is safe to call this macro from any thread.
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*
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* \since This macro is available since SDL 3.1.3.
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*
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* \sa SDL_stack_free
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*/
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#define SDL_stack_alloc(type, count) (type*)alloca(sizeof(type)*(count))
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/**
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* Free memory previously allocated with SDL_stack_alloc.
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*
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* If SDL used alloca() to allocate this memory, this macro does nothing and
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* the allocated memory will be automatically released when the function that
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* called SDL_stack_alloc() returns. If SDL used SDL_malloc(), it will
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* SDL_free the memory immediately.
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*
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* \param data the pointer, from SDL_stack_alloc(), to free.
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*
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* \threadsafety It is safe to call this macro from any thread.
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*
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* \since This macro is available since SDL 3.1.3.
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*
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* \sa SDL_stack_alloc
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*/
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#define SDL_stack_free(data)
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#elif !defined(SDL_DISABLE_ALLOCA)
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#define SDL_stack_alloc(type, count) (type*)alloca(sizeof(type)*(count))
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#define SDL_stack_free(data)
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#else
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@ -1488,11 +1723,76 @@ extern SDL_DECLSPEC void SDLCALL SDL_qsort_r(void *base, size_t nmemb, size_t si
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*/
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extern SDL_DECLSPEC void * SDLCALL SDL_bsearch_r(const void *key, const void *base, size_t nmemb, size_t size, SDL_CompareCallback_r compare, void *userdata);
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/**
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* Compute the absolute value of `x`.
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*
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* \param x an integer value.
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* \returns the absolute value of x.
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*
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* \threadsafety It is safe to call this function from any thread.
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*
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* \since This function is available since SDL 3.1.3.
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*/
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extern SDL_DECLSPEC int SDLCALL SDL_abs(int x);
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/* NOTE: these double-evaluate their arguments, so you should never have side effects in the parameters */
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/**
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* Return the lesser of two values.
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*
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* This is a helper macro that might be more clear than writing out the
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* comparisons directly, and works with any type that can be compared with
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* the `<` operator. However, it double-evaluates both its parameters, so do
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* not use expressions with side-effects here.
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*
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* \param x the first value to compare.
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* \param y the second value to compare.
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* \returns the lesser of `x` and `y`.
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*
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* \threadsafety It is safe to call this macro from any thread.
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_min(x, y) (((x) < (y)) ? (x) : (y))
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/**
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* Return the greater of two values.
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*
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* This is a helper macro that might be more clear than writing out the
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* comparisons directly, and works with any type that can be compared with
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* the `>` operator. However, it double-evaluates both its parameters, so do
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* not use expressions with side-effects here.
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*
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* \param x the first value to compare.
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* \param y the second value to compare.
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* \returns the lesser of `x` and `y`.
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*
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* \threadsafety It is safe to call this macro from any thread.
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_max(x, y) (((x) > (y)) ? (x) : (y))
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/**
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* Return a value clamped to a range.
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*
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* If `x` is outside the range a values between `a` and `b`, the returned
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* value will be `a` or `b` as appropriate. Otherwise, `x` is returned.
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*
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* This macro will produce incorrect results if `b` is less than `a`.
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*
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* This is a helper macro that might be more clear than writing out the
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* comparisons directly, and works with any type that can be compared with
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* the `<` and `>` operators. However, it double-evaluates all its parameters,
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* so do not use expressions with side-effects here.
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*
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* \param x the value to compare.
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* \param a the low end value.
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* \param b the high end value.
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* \returns x, clamped between a and b.
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*
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* \threadsafety It is safe to call this macro from any thread.
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*
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* \since This macro is available since SDL 3.1.3.
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*/
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#define SDL_clamp(x, a, b) (((x) < (a)) ? (a) : (((x) > (b)) ? (b) : (x)))
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/**
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@ -1731,8 +2031,72 @@ extern SDL_DECLSPEC int SDLCALL SDL_toupper(int x);
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*/
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extern SDL_DECLSPEC int SDLCALL SDL_tolower(int x);
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/**
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* Calculate a CRC-16 value.
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*
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* https://en.wikipedia.org/wiki/Cyclic_redundancy_check
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*
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* This function can be called multiple times, to stream data to be
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* checksummed in blocks. Each call must provide the previous CRC-16 return
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* value to be updated with the next block. The first call to this function
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* for a set of blocks should pass in a zero CRC value.
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*
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* \param crc the current checksum for this data set, or 0 for a new data set.
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* \param data a new block of data to add to the checksum.
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* \param len the size, in bytes, of the new block of data.
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* \returns a CRC-16 checksum value of all blocks in the data set.
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*
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* \threadsafety It is safe to call this function from any thread.
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*
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* \since This function is available since SDL 3.1.3.
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*/
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extern SDL_DECLSPEC Uint16 SDLCALL SDL_crc16(Uint16 crc, const void *data, size_t len);
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/**
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* Calculate a CRC-32 value.
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*
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* https://en.wikipedia.org/wiki/Cyclic_redundancy_check
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*
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* This function can be called multiple times, to stream data to be
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* checksummed in blocks. Each call must provide the previous CRC-32 return
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* value to be updated with the next block. The first call to this function
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* for a set of blocks should pass in a zero CRC value.
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*
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* \param crc the current checksum for this data set, or 0 for a new data set.
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* \param data a new block of data to add to the checksum.
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* \param len the size, in bytes, of the new block of data.
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* \returns a CRC-32 checksum value of all blocks in the data set.
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*
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* \threadsafety It is safe to call this function from any thread.
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*
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* \since This function is available since SDL 3.1.3.
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*/
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extern SDL_DECLSPEC Uint32 SDLCALL SDL_crc32(Uint32 crc, const void *data, size_t len);
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/**
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* Calculate a 32-bit MurmurHash3 value for a block of data.
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*
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* https://en.wikipedia.org/wiki/MurmurHash
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*
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* A seed may be specified, which changes the final results consistently, but
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* this does not work like SDL_crc16 and SDL_crc32: you can't feed a previous
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* result from this function back into itself as the next seed value to
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* calculate a hash in chunks; it won't produce the same hash as it would if
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* the same data was provided in a single call.
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*
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* If you aren't sure what to provide for a seed, zero is fine. Murmur3 is
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* not cryptographically secure, so it shouldn't be used for hashing
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* top-secret data.
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*
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* \param data the data to be hashed.
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* \param len the size of data, in bytes.
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* \param seed a value that alters the final hash value.
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* \returns a Murmur3 32-bit hash value.
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*
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* \threadsafety It is safe to call this function from any thread.
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*
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* \since This function is available since SDL 3.1.3.
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*/
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extern SDL_DECLSPEC Uint32 SDLCALL SDL_murmur3_32(const void *data, size_t len, Uint32 seed);
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/**
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@ -1763,12 +2127,37 @@ extern SDL_DECLSPEC void * SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SD
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#define SDL_memcpy memcpy
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#endif
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/**
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* A macro to copy memory between objects, with basic type checking.
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*
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* SDL_memcpy and SDL_memmove do not care where you copy memory to and from,
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* which can lead to bugs. This macro aims to avoid most of those bugs
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* by making sure that the source and destination are both pointers to
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* objects that are the same size. It does not check that the objects are
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* the same _type_, just that the copy will not overflow either object.
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*
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* The size check happens at compile time, and the compiler will throw an
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* error if the objects are different sizes.
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*
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* Generally this is intended to copy a single object, not an array.
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*
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* This macro looks like it double-evaluates its parameters, but the extras
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* them are in `sizeof` sections, which generate no code nor side-effects.
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*
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* \param dst a pointer to the destination object. Must not be NULL.
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* \param src a pointer to the source object. Must not be NULL.
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*
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* \threadsafety It is safe to call this function from any thread.
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*
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* \since This function is available since SDL 3.1.3.
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*/
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#define SDL_copyp(dst, src) \
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{ SDL_COMPILE_TIME_ASSERT(SDL_copyp, sizeof (*(dst)) == sizeof (*(src))); } \
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SDL_memcpy((dst), (src), sizeof(*(src)))
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/**
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* Copy memory.
|
||||
* Copy memory ranges that might overlap.
|
||||
*
|
||||
* It is okay for the memory regions to overlap. If you are confident that the
|
||||
* regions never overlap, using SDL_memcpy() may improve performance.
|
||||
|
|
@ -1805,10 +2194,64 @@ extern SDL_DECLSPEC void * SDLCALL SDL_memset4(void *dst, Uint32 val, size_t dwo
|
|||
#define SDL_memset memset
|
||||
#endif
|
||||
|
||||
/**
|
||||
* Clear an object's memory to zero.
|
||||
*
|
||||
* This is wrapper over SDL_memset that handles calculating the object size,
|
||||
* so there's no chance of copy/paste errors, and the code is cleaner.
|
||||
*
|
||||
* This requires an object, not a pointer to an object, nor an array.
|
||||
*
|
||||
* \param x the object to clear.
|
||||
*
|
||||
* \threadsafety It is safe to call this macro from any thread.
|
||||
*
|
||||
* \since This macro is available since SDL 3.1.3.
|
||||
*
|
||||
* \sa SDL_zerop
|
||||
* \sa SDL_zeroa
|
||||
*/
|
||||
#define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x)))
|
||||
|
||||
/**
|
||||
* Clear an object's memory to zero, using a pointer.
|
||||
*
|
||||
* This is wrapper over SDL_memset that handles calculating the object size,
|
||||
* so there's no chance of copy/paste errors, and the code is cleaner.
|
||||
*
|
||||
* This requires a pointer to an object, not an object itself, nor an array.
|
||||
*
|
||||
* \param x a pointer to the object to clear.
|
||||
*
|
||||
* \threadsafety It is safe to call this macro from any thread.
|
||||
*
|
||||
* \since This macro is available since SDL 3.1.3.
|
||||
*
|
||||
* \sa SDL_zero
|
||||
* \sa SDL_zeroa
|
||||
*/
|
||||
#define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x)))
|
||||
|
||||
/**
|
||||
* Clear an array's memory to zero.
|
||||
*
|
||||
* This is wrapper over SDL_memset that handles calculating the array size,
|
||||
* so there's no chance of copy/paste errors, and the code is cleaner.
|
||||
*
|
||||
* This requires an array, not an object, nor a pointer to an object.
|
||||
*
|
||||
* \param x an array to clear.
|
||||
*
|
||||
* \threadsafety It is safe to call this macro from any thread.
|
||||
*
|
||||
* \since This macro is available since SDL 3.1.3.
|
||||
*
|
||||
* \sa SDL_zero
|
||||
* \sa SDL_zeroa
|
||||
*/
|
||||
#define SDL_zeroa(x) SDL_memset((x), 0, sizeof((x)))
|
||||
|
||||
|
||||
extern SDL_DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
|
||||
|
||||
extern SDL_DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
|
||||
|
|
@ -4212,12 +4655,13 @@ extern SDL_DECLSPEC double SDLCALL SDL_tan(double x);
|
|||
*/
|
||||
extern SDL_DECLSPEC float SDLCALL SDL_tanf(float x);
|
||||
|
||||
/* The SDL implementation of iconv() returns these error codes */
|
||||
#define SDL_ICONV_ERROR (size_t)-1
|
||||
#define SDL_ICONV_E2BIG (size_t)-2
|
||||
#define SDL_ICONV_EILSEQ (size_t)-3
|
||||
#define SDL_ICONV_EINVAL (size_t)-4
|
||||
|
||||
/**
|
||||
* An opaque handle representing string encoding conversion state.
|
||||
*
|
||||
* \since This datatype is available since SDL 3.1.3.
|
||||
*
|
||||
* \sa SDL_iconv_open
|
||||
*/
|
||||
typedef struct SDL_iconv_data_t *SDL_iconv_t;
|
||||
|
||||
/**
|
||||
|
|
@ -4256,7 +4700,21 @@ extern SDL_DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
|
|||
* This function converts text between encodings, reading from and writing to
|
||||
* a buffer.
|
||||
*
|
||||
* It returns the number of succesful conversions.
|
||||
* It returns the number of succesful conversions on success. On error,
|
||||
* SDL_ICONV_E2BIG is returned when the output buffer is too small, or
|
||||
* SDL_ICONV_EILSEQ is returned when an invalid input sequence is encountered,
|
||||
* or SDL_ICONV_EINVAL is returned when an incomplete input sequence is
|
||||
* encountered.
|
||||
*
|
||||
* On exit:
|
||||
*
|
||||
* - inbuf will point to the beginning of the next multibyte sequence. On
|
||||
* error, this is the location of the problematic input sequence. On
|
||||
* success, this is the end of the input sequence.
|
||||
* - inbytesleft will be set to the number of bytes left to convert, which
|
||||
* will be 0 on success.
|
||||
* - outbuf will point to the location where to store the next output byte.
|
||||
* - outbytesleft will be set to the number of bytes left in the output buffer.
|
||||
*
|
||||
* \param cd The character set conversion context, created in
|
||||
* SDL_iconv_open().
|
||||
|
|
@ -4265,21 +4723,7 @@ extern SDL_DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
|
|||
* \param inbytesleft The number of bytes in the input buffer.
|
||||
* \param outbuf Address of variable that points to the output buffer.
|
||||
* \param outbytesleft The number of bytes in the output buffer.
|
||||
* \returns the number of conversions on success, else SDL_ICONV_E2BIG is
|
||||
* returned when the output buffer is too small, or SDL_ICONV_EILSEQ
|
||||
* is returned when an invalid input sequence is encountered, or
|
||||
* SDL_ICONV_EINVAL is returned when an incomplete input sequence is
|
||||
* encountered.
|
||||
*
|
||||
* On exit:
|
||||
*
|
||||
* - inbuf will point to the beginning of the next multibyte
|
||||
* sequence. On error, this is the location of the problematic
|
||||
* input sequence. On success, this is the end of the input
|
||||
* sequence. - inbytesleft will be set to the number of bytes left
|
||||
* to convert, which will be 0 on success. - outbuf will point to
|
||||
* the location where to store the next output byte. - outbytesleft
|
||||
* will be set to the number of bytes left in the output buffer.
|
||||
* \returns the number of conversions on success, or a negative error code.
|
||||
*
|
||||
* \since This function is available since SDL 3.1.3.
|
||||
*
|
||||
|
|
@ -4291,6 +4735,12 @@ extern SDL_DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf,
|
|||
size_t *inbytesleft, char **outbuf,
|
||||
size_t *outbytesleft);
|
||||
|
||||
#define SDL_ICONV_ERROR (size_t)-1 /**< Generic error. Check SDL_GetError()? */
|
||||
#define SDL_ICONV_E2BIG (size_t)-2 /**< Output buffer was too small. */
|
||||
#define SDL_ICONV_EILSEQ (size_t)-3 /**< Invalid input sequence was encountered. */
|
||||
#define SDL_ICONV_EINVAL (size_t)-4 /**< Incomplete input sequence was encountered. */
|
||||
|
||||
|
||||
/**
|
||||
* Helper function to convert a string's encoding in one call.
|
||||
*
|
||||
|
|
@ -4321,12 +4771,65 @@ extern SDL_DECLSPEC char * SDLCALL SDL_iconv_string(const char *tocode,
|
|||
const char *inbuf,
|
||||
size_t inbytesleft);
|
||||
|
||||
/* Some helper macros for common cases... */
|
||||
/* Some helper macros for common SDL_iconv_string cases... */
|
||||
|
||||
/**
|
||||
* Convert a UTF-8 string to the current locale's character encoding.
|
||||
*
|
||||
* This is a helper macro that might be more clear than calling
|
||||
* SDL_iconv_string directly. However, it double-evaluates its parameter,
|
||||
* so do not use an expression with side-effects here.
|
||||
*
|
||||
* \param S the string to convert.
|
||||
* \returns a new string, converted to the new encoding, or NULL on error.
|
||||
*
|
||||
* \since This macro is available since SDL 3.1.3.
|
||||
*/
|
||||
#define SDL_iconv_utf8_locale(S) SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
|
||||
|
||||
/**
|
||||
* Convert a UTF-8 string to UCS-2.
|
||||
*
|
||||
* This is a helper macro that might be more clear than calling
|
||||
* SDL_iconv_string directly. However, it double-evaluates its parameter,
|
||||
* so do not use an expression with side-effects here.
|
||||
*
|
||||
* \param S the string to convert.
|
||||
* \returns a new string, converted to the new encoding, or NULL on error.
|
||||
*
|
||||
* \since This macro is available since SDL 3.1.3.
|
||||
*/
|
||||
#define SDL_iconv_utf8_ucs2(S) (Uint16 *)SDL_iconv_string("UCS-2", "UTF-8", S, SDL_strlen(S)+1)
|
||||
|
||||
/**
|
||||
* Convert a UTF-8 string to UCS-4.
|
||||
*
|
||||
* This is a helper macro that might be more clear than calling
|
||||
* SDL_iconv_string directly. However, it double-evaluates its parameter,
|
||||
* so do not use an expression with side-effects here.
|
||||
*
|
||||
* \param S the string to convert.
|
||||
* \returns a new string, converted to the new encoding, or NULL on error.
|
||||
*
|
||||
* \since This macro is available since SDL 3.1.3.
|
||||
*/
|
||||
#define SDL_iconv_utf8_ucs4(S) (Uint32 *)SDL_iconv_string("UCS-4", "UTF-8", S, SDL_strlen(S)+1)
|
||||
|
||||
/**
|
||||
* Convert a wchar_t string to UTF-8.
|
||||
*
|
||||
* This is a helper macro that might be more clear than calling
|
||||
* SDL_iconv_string directly. However, it double-evaluates its parameter,
|
||||
* so do not use an expression with side-effects here.
|
||||
*
|
||||
* \param S the string to convert.
|
||||
* \returns a new string, converted to the new encoding, or NULL on error.
|
||||
*
|
||||
* \since This macro is available since SDL 3.1.3.
|
||||
*/
|
||||
#define SDL_iconv_wchar_utf8(S) SDL_iconv_string("UTF-8", "WCHAR_T", (char *)S, (SDL_wcslen(S)+1)*sizeof(wchar_t))
|
||||
|
||||
|
||||
/* force builds using Clang's static analysis tools to use literal C runtime
|
||||
here, since there are possibly tests that are ineffective otherwise. */
|
||||
#if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS)
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue