2020-04-02 23:48:09 +02:00
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/* SPDX-License-Identifier: GPL-2.0-only */
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2003-04-22 21:02:15 +02:00
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2009-10-24 15:06:04 +02:00
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#include <console/vtxprintf.h>
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2014-06-17 10:37:08 +02:00
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#include <string.h>
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2003-04-22 21:02:15 +02:00
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2018-05-15 20:57:01 +02:00
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struct vsnprintf_context {
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2013-11-26 21:48:57 +01:00
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char *str_buf;
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2013-11-26 22:07:47 +01:00
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size_t buf_limit;
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2013-11-26 21:48:57 +01:00
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};
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2009-05-26 16:31:37 +02:00
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2013-11-26 21:48:57 +01:00
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static void str_tx_byte(unsigned char byte, void *data)
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2009-10-24 15:06:04 +02:00
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{
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2013-11-26 22:07:47 +01:00
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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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2009-10-24 15:06:04 +02:00
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}
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2009-05-26 16:31:37 +02:00
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2018-01-29 03:01:10 +01:00
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int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
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2009-10-24 15:06:04 +02:00
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{
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2003-04-22 21:02:15 +02:00
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int i;
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2013-11-26 22:07:47 +01:00
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struct vsnprintf_context ctx;
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2009-10-24 15:06:04 +02:00
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2013-11-26 21:48:57 +01:00
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ctx.str_buf = buf;
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2013-11-26 22:07:47 +01:00
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ctx.buf_limit = size ? size - 1 : 0;
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2014-02-04 13:28:17 +01:00
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i = vtxprintf(str_tx_byte, fmt, args, &ctx);
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2013-11-26 22:07:47 +01:00
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if (size)
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*ctx.str_buf = '\0';
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2009-10-24 15:06:04 +02:00
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2003-04-22 21:02:15 +02:00
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return i;
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}
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2013-11-26 22:07:47 +01:00
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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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2003-04-22 21:02:15 +02:00
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va_end(args);
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2009-10-24 15:06:04 +02:00
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2003-04-22 21:02:15 +02:00
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return i;
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}
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