72 lines
1.3 KiB
C
72 lines
1.3 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <types.h>
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#include <rtl.h>
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#include <util.h>
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#include <sprintf.h>
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#include <console.h>
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static void
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charout(size_t cmd, const char *s_arg, uint32_t sz_arg, struct snprint_param *param)
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{
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const char *s = s_arg;
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uint32_t sz = sz_arg;
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/* pointer to an integer to store the number of characters */
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size_t nchars = param->wrtn;
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/* working pointer */
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const char *p = s;
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size_t len;
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/* copy mode ? */
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if (cmd == PRINT_CMD_COPY) {
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if (sz > 0U) { /* copy 'sz' characters */
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len = console_write(s, sz);
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s += len;
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}
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nchars += (s - p);
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} else {
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/* fill mode */
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nchars += sz;
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while (sz != 0U) {
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console_putc(s);
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sz--;
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}
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}
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param->wrtn = nchars;
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}
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void vprintf(const char *fmt, va_list args)
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{
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/* struct to store all necessary parameters */
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struct print_param param;
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struct snprint_param snparam;
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/* initialize parameters */
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(void)memset(&snparam, 0U, sizeof(snparam));
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(void)memset(¶m, 0U, sizeof(param));
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param.emit = charout;
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param.data = &snparam;
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/* execute the printf() */
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do_print(fmt, ¶m, args);
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}
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void printf(const char *fmt, ...)
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{
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/* variable argument list needed for do_print() */
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va_list args;
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va_start(args, fmt);
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/* execute the printf() */
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vprintf(fmt, args);
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/* destroy parameter list */
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va_end(args);
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}
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