1/* Write repeated characters to struct __*printf_buffer. Generic version.
2 Copyright (C) 2022-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <assert.h>
20#include <string.h>
21
22void
23Xprintf (buffer_pad_1) (struct Xprintf_buffer *buf, CHAR_T ch, size_t count)
24{
25 if (__glibc_unlikely (Xprintf_buffer_has_failed (buf)))
26 return;
27
28 do
29 {
30 /* Proactively make room. __*printf_buffer_pad has already
31 checked for a zero-length write, so this function is only
32 called when there is actually data to write. */
33 if (buf->write_ptr == buf->write_end && !Xprintf_buffer_flush (buf))
34 return;
35 assert (buf->write_ptr != buf->write_end);
36 size_t to_fill = buf->write_end - buf->write_ptr;
37 if (to_fill > count)
38 to_fill = count;
39 MEMSET (buf->write_ptr, ch, to_fill);
40 buf->write_ptr += to_fill;
41 count -= to_fill;
42 }
43 while (count > 0);
44}
45