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ce044d1791
This name better reflects that it handles arrays, and doesn't shout. Signed-off-by: Alejandro Colomar <alx@kernel.org>
64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
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// SPDX-License-Identifier: BSD-3-Clause
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#ifndef SHADOW_INCLUDE_LIB_STRING_SPRINTF_SNPRINTF_H_
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#define SHADOW_INCLUDE_LIB_STRING_SPRINTF_SNPRINTF_H_
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#include "config.h"
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#include <stdarg.h>
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#include <stddef.h>
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#include <stdio.h>
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#include "attr.h"
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#include "sizeof.h"
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// stprintf_a - string truncate print formatted array
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#define stprintf_a(s, fmt, ...) \
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( \
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snprintf_(s, countof(s), fmt __VA_OPT__(,) __VA_ARGS__) \
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)
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format_attr(printf, 3, 4)
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inline int snprintf_(char *restrict s, size_t size, const char *restrict fmt,
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...);
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format_attr(printf, 3, 0)
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inline int vsnprintf_(char *restrict s, size_t size, const char *restrict fmt,
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va_list ap);
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inline int
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snprintf_(char *restrict s, size_t size, const char *restrict fmt, ...)
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{
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int len;
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va_list ap;
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va_start(ap, fmt);
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len = vsnprintf_(s, size, fmt, ap);
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va_end(ap);
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return len;
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}
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inline int
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vsnprintf_(char *restrict s, size_t size, const char *restrict fmt, va_list ap)
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{
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int len;
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len = vsnprintf(s, size, fmt, ap);
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if (len == -1)
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return -1;
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if ((size_t) len >= size)
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return -1;
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return len;
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}
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#endif // include guard
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