Atlas - SDL_error.c
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[FILE BEGIN]
1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2025 Sam Lantinga <[email protected]>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21#include "SDL_internal.h"
22
23#include "stdlib/SDL_vacopy.h"
24
25// Simple error handling in SDL
26
27#include "SDL_error_c.h"
28
29bool SDL_SetError(SDL_PRINTF_FORMAT_STRING const char *fmt, ...)
30{
31    va_list ap;
32    bool result;
33
34    va_start(ap, fmt);
35    result = SDL_SetErrorV(fmt, ap);
36    va_end(ap);
37    return result;
38}
39
40bool SDL_SetErrorV(SDL_PRINTF_FORMAT_STRING const char *fmt, va_list ap)
41{
42    // Ignore call if invalid format pointer was passed
43    if (fmt) {
44        int result;
45        SDL_error *error = SDL_GetErrBuf(true);
46        va_list ap2;
47
48        error->error = SDL_ErrorCodeGeneric;
49
50        va_copy(ap2, ap);
51        result = SDL_vsnprintf(error->str, error->len, fmt, ap2);
52        va_end(ap2);
53
54        if (result >= 0 && (size_t)result >= error->len && error->realloc_func) {
55            size_t len = (size_t)result + 1;
56            char *str = (char *)error->realloc_func(error->str, len);
57            if (str) {
58                error->str = str;
59                error->len = len;
60                va_copy(ap2, ap);
61                (void)SDL_vsnprintf(error->str, error->len, fmt, ap2);
62                va_end(ap2);
63            }
64        }
65
66// Enable this if you want to see all errors printed as they occur.
67// Note that there are many recoverable errors that may happen internally and
68// can be safely ignored if the public API doesn't return an error code.
69#if 0
70        SDL_LogError(SDL_LOG_CATEGORY_ERROR, "%s", error->str);
71#endif
72    }
73
74    return false;
75}
76
77const char *SDL_GetError(void)
78{
79    const SDL_error *error = SDL_GetErrBuf(false);
80
81    if (!error) {
82        return "";
83    }
84
85    switch (error->error) {
86    case SDL_ErrorCodeGeneric:
87        return error->str;
88    case SDL_ErrorCodeOutOfMemory:
89        return "Out of memory";
90    default:
91        return "";
92    }
93}
94
95bool SDL_ClearError(void)
96{
97    SDL_error *error = SDL_GetErrBuf(false);
98
99    if (error) {
100        error->error = SDL_ErrorCodeNone;
101    }
102    return true;
103}
104
105bool SDL_OutOfMemory(void)
106{
107    SDL_error *error = SDL_GetErrBuf(true);
108
109    if (error) {
110        error->error = SDL_ErrorCodeOutOfMemory;
111    }
112    return false;
113}
114
115
[FILE END]
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