1/* Blob write function for 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 <printf_buffer.h>
20
21#include <assert.h>
22#include <string.h>
23
24void
25Xprintf_buffer_write (struct Xprintf_buffer *buf,
26 const CHAR_T *s, size_t count)
27{
28 if (__glibc_unlikely (Xprintf_buffer_has_failed (buf)))
29 return;
30
31 while (count > 0)
32 {
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_copy = buf->write_end - buf->write_ptr;
37 if (to_copy > count)
38 to_copy = count;
39 MEMCPY (buf->write_ptr, s, to_copy);
40 buf->write_ptr += to_copy;
41 s += to_copy;
42 count -= to_copy;
43 }
44}
45