86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
/*
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* Copyright (c) 2018 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef SHELL_FPRINTF_H__
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#define SHELL_FPRINTF_H__
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#include <zephyr.h>
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#include <stdbool.h>
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef void (*shell_fprintf_fwrite)(const void *user_ctx,
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const char *data,
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size_t length);
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struct shell_fprintf_control_block {
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size_t buffer_cnt;
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bool autoflush;
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};
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/**
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* @brief fprintf context
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*/
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struct shell_fprintf {
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u8_t *buffer;
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size_t buffer_size;
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shell_fprintf_fwrite fwrite;
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const void *user_ctx;
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struct shell_fprintf_control_block *ctrl_blk;
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};
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/**
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* @brief Macro for defining shell_fprintf instance.
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*
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* @param _name Instance name.
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* @param _user_ctx Pointer to user data.
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* @param _buf Pointer to output buffer
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* @param _size Size of output buffer.
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* @param _autoflush Indicator if buffer shall be automatically flush.
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* @param _fwrite Pointer to function sending data stream.
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*/
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#define SHELL_FPRINTF_DEFINE(_name, _user_ctx, _buf, _size, \
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_autoflush, _fwrite) \
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static struct shell_fprintf_control_block \
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_name##_shell_fprintf_ctx = { \
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.autoflush = _autoflush, \
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.buffer_cnt = 0 \
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}; \
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static const struct shell_fprintf _name = { \
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.buffer = _buf, \
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.buffer_size = _size, \
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.fwrite = _fwrite, \
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.user_ctx = _user_ctx, \
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.ctrl_blk = &_name##_shell_fprintf_ctx \
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}
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/**
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* @brief fprintf like function which send formated data stream to output.
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*
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* @param sh_fprintf fprintf instance.
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* @param fmt Format string.
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* @param args List of parameters to print.
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*/
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void shell_fprintf_fmt(const struct shell_fprintf *sh_fprintf,
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char const *fmt, va_list args);
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/**
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* @brief function flushing data stored in io_buffer.
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*
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* @param sh_fprintf fprintf instance
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*/
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void shell_fprintf_buffer_flush(const struct shell_fprintf *sh_fprintf);
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#ifdef __cplusplus
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}
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#endif
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#endif /* SHELL_FPRINTF_H__ */
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