| 1 | /* Multibyte and wide printf buffers writing data to a FILE * stream. |
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| 2 | Copyright (C) 2022-2024 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #ifndef PRINTF_BUFFER_TO_FILE_H |
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| 20 | #define PRINTF_BUFFER_TO_FILE_H |
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| 21 | |
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| 22 | #include <bits/types/FILE.h> |
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| 23 | #include <printf_buffer.h> |
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| 24 | |
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| 25 | struct __printf_buffer_to_file |
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| 26 | { |
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| 27 | struct __printf_buffer base; |
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| 28 | FILE *fp; |
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| 29 | |
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| 30 | /* Staging buffer. Used if fp does not have any available buffer |
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| 31 | space. */ |
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| 32 | char stage[PRINTF_BUFFER_SIZE_TO_FILE_STAGE]; |
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| 33 | }; |
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| 34 | |
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| 35 | /* Initializes *BUF to write data to FP. */ |
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| 36 | void __printf_buffer_to_file_init (struct __printf_buffer_to_file *buf, |
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| 37 | FILE *fp) attribute_hidden; |
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| 38 | |
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| 39 | /* Transfers any pending data in BUF to BUF->FP. The return value |
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| 40 | follows the printf convention (number bytes written; or -1 for error). */ |
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| 41 | int __printf_buffer_to_file_done (struct __printf_buffer_to_file *buf) |
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| 42 | attribute_hidden; |
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| 43 | |
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| 44 | /* Wide version below. */ |
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| 45 | |
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| 46 | struct __wprintf_buffer_to_file |
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| 47 | { |
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| 48 | struct __wprintf_buffer base; |
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| 49 | FILE *fp; |
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| 50 | wchar_t stage[PRINTF_BUFFER_SIZE_TO_FILE_STAGE]; |
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| 51 | }; |
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| 52 | void __wprintf_buffer_to_file_init (struct __wprintf_buffer_to_file *buf, |
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| 53 | FILE *fp) attribute_hidden; |
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| 54 | int __wprintf_buffer_to_file_done (struct __wprintf_buffer_to_file *buf) |
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| 55 | attribute_hidden; |
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| 56 | |
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| 57 | #endif /* PRINTF_BUFFER_TO_FILE_H */ |
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| 58 | |
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