4bbec0c691
<string.h> is supposed to provide <stdarg.h> and <stdio.h> Change-Id: I021ba535ba5ec683021c4dfc41ac18d9cebbcfd2 Signed-off-by: Elyes Haouas <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/81853 Reviewed-by: Eric Lai <ericllai@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
45 lines
789 B
C
45 lines
789 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#include <console/vtxprintf.h>
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#include <string.h>
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struct vsnprintf_context {
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char *str_buf;
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size_t buf_limit;
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};
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static void str_tx_byte(unsigned char byte, void *data)
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{
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struct vsnprintf_context *ctx = data;
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if (ctx->buf_limit) {
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*ctx->str_buf = byte;
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ctx->str_buf++;
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ctx->buf_limit--;
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}
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}
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int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
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{
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int i;
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struct vsnprintf_context ctx;
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ctx.str_buf = buf;
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ctx.buf_limit = size ? size - 1 : 0;
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i = vtxprintf(str_tx_byte, fmt, args, &ctx);
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if (size)
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*ctx.str_buf = '\0';
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return i;
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}
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int snprintf(char *buf, size_t size, const char *fmt, ...)
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{
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va_list args;
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int i;
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va_start(args, fmt);
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i = vsnprintf(buf, size, fmt, args);
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va_end(args);
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return i;
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}
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