1 /* Wide printf buffers writing data to a FILE *.
2 Copyright (C) 2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
19 /* This implementation is not optimized (unlikely the multibyte
20 implementation) and always writes to the temporary buffer first. */
22 #include <printf_buffer_to_file.h>
24 #include <array_length.h>
25 #include <libio/libioP.h>
28 __wprintf_buffer_flush_to_file (struct __wprintf_buffer_to_file
*buf
)
30 size_t count
= buf
->base
.write_ptr
- buf
->stage
;
31 if ((size_t) _IO_sputn (buf
->fp
, buf
->stage
, count
) != count
)
33 __wprintf_buffer_mark_failed (&buf
->base
);
36 buf
->base
.written
+= count
;
37 buf
->base
.write_ptr
= buf
->stage
;
41 __wprintf_buffer_to_file_init (struct __wprintf_buffer_to_file
*buf
, FILE *fp
)
43 __wprintf_buffer_init (&buf
->base
, buf
->stage
, array_length (buf
->stage
),
44 __wprintf_buffer_mode_to_file
);
49 __wprintf_buffer_to_file_done (struct __wprintf_buffer_to_file
*buf
)
51 if (__wprintf_buffer_has_failed (&buf
->base
))
53 __wprintf_buffer_flush_to_file (buf
);
54 return __wprintf_buffer_done (&buf
->base
);