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659fe9fd | 1 | /* Write repeated characters to struct __*printf_buffer. Generic version. |
6d7e8eda | 2 | Copyright (C) 2022-2023 Free Software Foundation, Inc. |
659fe9fd FW |
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 | ||
22 | void | |
23 | Xprintf (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 | } |