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6053a9ce05
It's a standard function. Change-Id: I039cce2dfc4e168804eb7d12b76a29af712ac7a1 Signed-off-by: David Hendricks <dhendricks@fb.com> Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/23616 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2009 coresystems GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of
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* the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <console/vtxprintf.h>
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#include <string.h>
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#include <trace.h>
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struct vsnprintf_context
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{
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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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DISABLE_TRACE;
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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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ENABLE_TRACE;
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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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