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introduce embedded SDL3
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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/**
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* # CategoryError
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*
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* Simple error message routines for SDL.
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*/
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#ifndef SDL_error_h_
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#define SDL_error_h_
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#include <SDL3/SDL_stdinc.h>
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#include <SDL3/SDL_begin_code.h>
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/* Set up for C function definitions, even when using C++ */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Public functions */
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/**
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* Set the SDL error message for the current thread.
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*
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* Calling this function will replace any previous error message that was set.
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*
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* This function always returns -1, since SDL frequently uses -1 to signify an
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* failing result, leading to this idiom:
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*
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* ```c
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* if (error_code) {
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* return SDL_SetError("This operation has failed: %d", error_code);
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* }
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* ```
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*
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* \param fmt a printf()-style message format string.
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* \param ... additional parameters matching % tokens in the `fmt` string, if
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* any.
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* \returns -1.
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*
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* \since This function is available since SDL 3.0.0.
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*
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* \sa SDL_ClearError
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* \sa SDL_GetError
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*/
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extern SDL_DECLSPEC int SDLCALL SDL_SetError(SDL_PRINTF_FORMAT_STRING const char *fmt, ...) SDL_PRINTF_VARARG_FUNC(1);
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/**
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* Set an error indicating that memory allocation failed.
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*
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* This function does not do any memory allocation.
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*
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* \returns -1.
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*
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* \since This function is available since SDL 3.0.0.
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*/
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extern SDL_DECLSPEC int SDLCALL SDL_OutOfMemory(void);
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/**
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* Retrieve a message about the last error that occurred on the current
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* thread.
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*
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* It is possible for multiple errors to occur before calling SDL_GetError().
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* Only the last error is returned.
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*
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* The message is only applicable when an SDL function has signaled an error.
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* You must check the return values of SDL function calls to determine when to
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* appropriately call SDL_GetError(). You should *not* use the results of
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* SDL_GetError() to decide if an error has occurred! Sometimes SDL will set
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* an error string even when reporting success.
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*
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* SDL will *not* clear the error string for successful API calls. You *must*
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* check return values for failure cases before you can assume the error
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* string applies.
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*
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* Error strings are set per-thread, so an error set in a different thread
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* will not interfere with the current thread's operation.
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*
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* The returned value is a thread-local string which will remain valid until
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* the current thread's error string is changed. The caller should make a copy
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* if the value is needed after the next SDL API call.
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*
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* \returns a message with information about the specific error that occurred,
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* or an empty string if there hasn't been an error message set since
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* the last call to SDL_ClearError().
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*
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* \since This function is available since SDL 3.0.0.
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*
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* \sa SDL_ClearError
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* \sa SDL_SetError
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*/
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extern SDL_DECLSPEC const char * SDLCALL SDL_GetError(void);
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/**
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* Clear any previous error message for this thread.
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*
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* \returns 0.
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*
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* \since This function is available since SDL 3.0.0.
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*
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* \sa SDL_GetError
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* \sa SDL_SetError
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*/
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extern SDL_DECLSPEC int SDLCALL SDL_ClearError(void);
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/**
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* \name Internal error functions
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*
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* \internal
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* Private error reporting function - used internally.
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*/
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/* @{ */
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#define SDL_Unsupported() SDL_SetError("That operation is not supported")
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#define SDL_InvalidParamError(param) SDL_SetError("Parameter '%s' is invalid", (param))
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/* @} *//* Internal error functions */
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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}
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#endif
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#include <SDL3/SDL_close_code.h>
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#endif /* SDL_error_h_ */
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