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// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
// SPDX-License-Identifier: BSD-3-Clause
#ifndef SHADOW_INCLUDE_LIB_STRING_SPRINTF_SNPRINTF_H_
#define SHADOW_INCLUDE_LIB_STRING_SPRINTF_SNPRINTF_H_
#include "config.h"
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include "attr.h"
#include "sizeof.h"
// stprintf_a - string truncate print formatted array
#define stprintf_a(s, fmt, ...) \
( \
snprintf_(s, countof(s), fmt __VA_OPT__(,) __VA_ARGS__) \
)
format_attr(printf, 3, 4)
inline int snprintf_(char *restrict s, size_t size, const char *restrict fmt,
...);
format_attr(printf, 3, 0)
inline int vsnprintf_(char *restrict s, size_t size, const char *restrict fmt,
va_list ap);
inline int
snprintf_(char *restrict s, size_t size, const char *restrict fmt, ...)
{
int len;
va_list ap;
va_start(ap, fmt);
len = vsnprintf_(s, size, fmt, ap);
va_end(ap);
return len;
}
inline int
vsnprintf_(char *restrict s, size_t size, const char *restrict fmt, va_list ap)
{
int len;
len = vsnprintf(s, size, fmt, ap);
if (len == -1)
return -1;
if ((size_t) len >= size)
return -1;
return len;
}
#endif // include guard
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