80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
/*
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* Copyright (c) 2020 YuQing <384681@qq.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the Lesser GNU General Public License, version 3
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* or later ("LGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the Lesser GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef BUFFERED_FILE_WRITER_H
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#define BUFFERED_FILE_WRITER_H
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#include "common_define.h"
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typedef struct
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{
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int fd;
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int buffer_size;
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char filename[MAX_PATH_SIZE];
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char *buff;
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char *current;
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char *buff_end;
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char *water_mark;
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} BufferedFileWriter;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** open buffered file writer
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* parameters:
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* writer: the writer
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* filename: the filename to write
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* buffer_size: the buffer size, <= 0 for recommend 64KB
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* max_written_once: max written bytes per call, <= 0 for 256
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* mode: the file privilege such as 0644
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* return: error code, 0 for success, != 0 for errno
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*/
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int buffered_file_writer_open_ex(BufferedFileWriter *writer,
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const char *filename, const int buffer_size,
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const int max_written_once, const int mode);
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static inline int buffered_file_writer_open(BufferedFileWriter *writer,
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const char *filename)
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{
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const int buffer_size = 0;
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const int max_written_once = 0;
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const int mode = 0644;
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return buffered_file_writer_open_ex(writer, filename,
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buffer_size, max_written_once, mode);
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}
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/** close buffered file writer
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* parameters:
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* writer: the writer
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* return: error code, 0 for success, != 0 for errno
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*/
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int buffered_file_writer_close(BufferedFileWriter *writer);
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int buffered_file_writer_append(BufferedFileWriter *writer,
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const char *format, ...);
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int buffered_file_writer_append_buff(BufferedFileWriter *writer,
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const char *buff, const int len);
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int buffered_file_writer_flush(BufferedFileWriter *writer);
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#ifdef __cplusplus
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}
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#endif
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#endif
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