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Infrared: fix RAW parsing in cli. Remove dead sources. (#1255)

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* Infrared: fix RAW parsing in cli. Remove dead sources.
This commit is contained in:
あく
2022-05-20 23:03:09 +03:00
committed by GitHub
parent 8d737133fe
commit 8a81b79e00
7 changed files with 2 additions and 1194 deletions
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443
lib/app-scened-template/file_worker.c
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@@ -1,443 +0,0 @@
#include "file_worker.h"
#include <m-string.h>
#include <lib/toolbox/hex.h>
#include <dialogs/dialogs.h>
#include <furi.h>
struct FileWorker {
Storage* api;
bool silent;
File* file;
};
bool file_worker_check_common_errors(FileWorker* file_worker);
void file_worker_show_error_internal(FileWorker* file_worker, const char* error_text);
bool file_worker_read_internal(FileWorker* file_worker, void* buffer, uint16_t bytes_to_read);
bool file_worker_write_internal(
FileWorker* file_worker,
const void* buffer,
uint16_t bytes_to_write);
bool file_worker_tell_internal(FileWorker* file_worker, uint64_t* position);
bool file_worker_seek_internal(FileWorker* file_worker, uint64_t position, bool from_start);
FileWorker* file_worker_alloc(bool _silent) {
FileWorker* file_worker = malloc(sizeof(FileWorker));
file_worker->silent = _silent;
file_worker->api = furi_record_open("storage");
file_worker->file = storage_file_alloc(file_worker->api);
return file_worker;
}
void file_worker_free(FileWorker* file_worker) {
storage_file_free(file_worker->file);
furi_record_close("storage");
free(file_worker);
}
bool file_worker_open(
FileWorker* file_worker,
const char* filename,
FS_AccessMode access_mode,
FS_OpenMode open_mode) {
bool result = storage_file_open(file_worker->file, filename, access_mode, open_mode);
if(!result) {
file_worker_show_error_internal(file_worker, "Cannot open\nfile");
return false;
}
return file_worker_check_common_errors(file_worker);
}
bool file_worker_close(FileWorker* file_worker) {
if(storage_file_is_open(file_worker->file)) {
storage_file_close(file_worker->file);
}
return file_worker_check_common_errors(file_worker);
}
bool file_worker_mkdir(FileWorker* file_worker, const char* dirname) {
FS_Error fs_result = storage_common_mkdir(file_worker->api, dirname);
if(fs_result != FSE_OK && fs_result != FSE_EXIST) {
file_worker_show_error_internal(file_worker, "Cannot create\nfolder");
return false;
};
return file_worker_check_common_errors(file_worker);
}
bool file_worker_remove(FileWorker* file_worker, const char* filename) {
FS_Error fs_result = storage_common_remove(file_worker->api, filename);
if(fs_result != FSE_OK && fs_result != FSE_NOT_EXIST) {
file_worker_show_error_internal(file_worker, "Cannot remove\nold file");
return false;
};
return file_worker_check_common_errors(file_worker);
}
void file_worker_get_next_filename(
FileWorker* file_worker,
const char* dirname,
const char* filename,
const char* fileextension,
string_t nextfilename) {
string_t temp_str;
string_init(temp_str);
uint16_t num = 0;
string_printf(temp_str, "%s/%s%s", dirname, filename, fileextension);
while(storage_common_stat(file_worker->api, string_get_cstr(temp_str), NULL) == FSE_OK) {
num++;
string_printf(temp_str, "%s/%s%d%s", dirname, filename, num, fileextension);
}
if(num) {
string_printf(nextfilename, "%s%d", filename, num);
} else {
string_printf(nextfilename, "%s", filename);
}
string_clear(temp_str);
}
bool file_worker_read(FileWorker* file_worker, void* buffer, uint16_t bytes_to_read) {
if(!file_worker_read_internal(file_worker, buffer, bytes_to_read)) {
return false;
}
return file_worker_check_common_errors(file_worker);
}
bool file_worker_read_until(FileWorker* file_worker, string_t str_result, char separator) {
string_reset(str_result);
const uint8_t buffer_size = 32;
uint8_t buffer[buffer_size];
do {
uint16_t read_count = storage_file_read(file_worker->file, buffer, buffer_size);
if(storage_file_get_error(file_worker->file) != FSE_OK) {
file_worker_show_error_internal(file_worker, "Cannot read\nfile");
return false;
}
bool result = false;
for(uint16_t i = 0; i < read_count; i++) {
if(buffer[i] == separator) {
uint64_t position;
if(!file_worker_tell_internal(file_worker, &position)) {
return false;
}
position = position - read_count + i + 1;
if(!file_worker_seek_internal(file_worker, position, true)) {
return false;
}
result = true;
break;
} else {
string_push_back(str_result, buffer[i]);
}
}
if(result || read_count == 0) {
break;
}
} while(true);
return file_worker_check_common_errors(file_worker);
}
bool file_worker_read_hex(FileWorker* file_worker, uint8_t* buffer, uint16_t bytes_to_read) {
uint8_t hi_nibble_value, low_nibble_value;
uint8_t text[2];
for(uint8_t i = 0; i < bytes_to_read; i++) {
if(i != 0) {
// space
if(!file_worker_read_internal(file_worker, text, 1)) {
return false;
}
}
// actual data
if(!file_worker_read_internal(file_worker, text, 2)) {
return false;
}
// convert hex value to byte
if(hex_char_to_hex_nibble(text[0], &hi_nibble_value) &&
hex_char_to_hex_nibble(text[1], &low_nibble_value)) {
buffer[i] = (hi_nibble_value << 4) | low_nibble_value;
} else {
file_worker_show_error_internal(file_worker, "Cannot parse\nfile");
return false;
}
}
return file_worker_check_common_errors(file_worker);
}
bool file_worker_tell(FileWorker* file_worker, uint64_t* position) {
if(!file_worker_tell_internal(file_worker, position)) {
return false;
}
return file_worker_check_common_errors(file_worker);
}
bool file_worker_seek(FileWorker* file_worker, uint64_t position, bool from_start) {
if(!file_worker_seek_internal(file_worker, position, from_start)) {
return false;
}
return file_worker_check_common_errors(file_worker);
}
bool file_worker_write(FileWorker* file_worker, const void* buffer, uint16_t bytes_to_write) {
if(!file_worker_write_internal(file_worker, buffer, bytes_to_write)) {
return false;
}
return file_worker_check_common_errors(file_worker);
}
bool file_worker_write_hex(FileWorker* file_worker, const uint8_t* buffer, uint16_t bytes_to_write) {
const uint8_t byte_text_size = 3;
char byte_text[byte_text_size];
for(uint8_t i = 0; i < bytes_to_write; i++) {
sniprintf(byte_text, byte_text_size, "%02X", buffer[i]);
if(i != 0) {
// space
const char* space = " ";
if(!file_worker_write_internal(file_worker, space, 1)) {
return false;
}
}
if(!file_worker_write_internal(file_worker, byte_text, 2)) {
return false;
}
}
return file_worker_check_common_errors(file_worker);
}
void file_worker_show_error(FileWorker* file_worker, const char* error_text) {
UNUSED(file_worker);
DialogsApp* dialogs = furi_record_open("dialogs");
DialogMessage* message = dialog_message_alloc();
dialog_message_set_text(message, error_text, 88, 32, AlignCenter, AlignCenter);
dialog_message_set_icon(message, &I_SDQuestion_35x43, 5, 6);
dialog_message_set_buttons(message, "Back", NULL, NULL);
dialog_message_show(dialogs, message);
dialog_message_free(message);
furi_record_close("dialogs");
}
bool file_worker_file_select(
FileWorker* file_worker,
const char* path,
const char* extension,
char* result,
uint8_t result_size,
const char* selected_filename) {
UNUSED(file_worker);
DialogsApp* dialogs = furi_record_open("dialogs");
bool ret =
dialog_file_select_show(dialogs, path, extension, result, result_size, selected_filename);
furi_record_close("dialogs");
return ret;
}
bool file_worker_check_common_errors(FileWorker* file_worker) {
UNUSED(file_worker);
//TODO remove
/* TODO: [FL-1431] Add return value to file_parser.get_sd_api().check_error() and replace get_fs_info(). */
return true;
}
void file_worker_show_error_internal(FileWorker* file_worker, const char* error_text) {
if(!file_worker->silent) {
file_worker_show_error(file_worker, error_text);
}
}
bool file_worker_read_internal(FileWorker* file_worker, void* buffer, uint16_t bytes_to_read) {
uint16_t read_count = storage_file_read(file_worker->file, buffer, bytes_to_read);
if(storage_file_get_error(file_worker->file) != FSE_OK || read_count != bytes_to_read) {
file_worker_show_error_internal(file_worker, "Cannot read\nfile");
return false;
}
return true;
}
bool file_worker_write_internal(
FileWorker* file_worker,
const void* buffer,
uint16_t bytes_to_write) {
uint16_t write_count = storage_file_write(file_worker->file, buffer, bytes_to_write);
if(storage_file_get_error(file_worker->file) != FSE_OK || write_count != bytes_to_write) {
file_worker_show_error_internal(file_worker, "Cannot write\nto file");
return false;
}
return true;
}
bool file_worker_tell_internal(FileWorker* file_worker, uint64_t* position) {
*position = storage_file_tell(file_worker->file);
if(storage_file_get_error(file_worker->file) != FSE_OK) {
file_worker_show_error_internal(file_worker, "Cannot tell\nfile offset");
return false;
}
return true;
}
bool file_worker_seek_internal(FileWorker* file_worker, uint64_t position, bool from_start) {
storage_file_seek(file_worker->file, position, from_start);
if(storage_file_get_error(file_worker->file) != FSE_OK) {
file_worker_show_error_internal(file_worker, "Cannot seek\nfile");
return false;
}
return true;
}
bool file_worker_read_until_buffered(
FileWorker* file_worker,
string_t str_result,
char* file_buf,
size_t* file_buf_cnt,
size_t file_buf_size,
char separator) {
furi_assert(string_capacity(str_result) > 0);
// fs_api->file.read now supports up to 512 bytes reading at a time
furi_assert(file_buf_size <= 512);
string_reset(str_result);
size_t newline_index = 0;
bool found_eol = false;
bool max_length_exceeded = false;
size_t max_length = string_capacity(str_result) - 1;
while(1) {
if(*file_buf_cnt > 0) {
size_t end_index = 0;
char* endline_ptr = (char*)memchr(file_buf, separator, *file_buf_cnt);
newline_index = endline_ptr - file_buf;
if(endline_ptr == 0) {
end_index = *file_buf_cnt;
} else if(newline_index < *file_buf_cnt) {
end_index = newline_index + 1;
found_eol = true;
} else {
furi_assert(0);
}
if(max_length && (string_size(str_result) + end_index > max_length))
max_length_exceeded = true;
if(!max_length_exceeded) {
for(size_t i = 0; i < end_index; ++i) {
string_push_back(str_result, file_buf[i]);
}
}
memmove(file_buf, &file_buf[end_index], *file_buf_cnt - end_index);
*file_buf_cnt = *file_buf_cnt - end_index;
if(found_eol) break;
}
*file_buf_cnt += storage_file_read(
file_worker->file, &file_buf[*file_buf_cnt], file_buf_size - *file_buf_cnt);
if(storage_file_get_error(file_worker->file) != FSE_OK) {
file_worker_show_error_internal(file_worker, "Cannot read\nfile");
string_reset(str_result);
*file_buf_cnt = 0;
break;
}
if(*file_buf_cnt == 0) {
break; // end of reading
}
}
if(max_length_exceeded) string_reset(str_result);
return string_size(str_result) || *file_buf_cnt;
}
bool file_worker_get_value_from_key(
FileWorker* file_worker,
string_t key,
char delimiter,
string_t value) {
bool found = false;
string_t next_line;
string_t next_key;
string_init(next_line);
string_init(next_key);
size_t delim_pos = 0;
while(file_worker_read_until(file_worker, next_line, '\n')) {
delim_pos = string_search_char(next_line, delimiter);
if(delim_pos == STRING_FAILURE) {
break;
}
string_set_n(next_key, next_line, 0, delim_pos);
if(string_equal_p(next_key, key)) {
string_right(next_line, delim_pos);
string_strim(next_line);
string_set(value, next_line);
found = true;
break;
}
}
string_clear(next_line);
string_clear(next_key);
return found;
}
bool file_worker_rename(FileWorker* file_worker, const char* old_path, const char* new_path) {
FS_Error fs_result = storage_common_rename(file_worker->api, old_path, new_path);
if(fs_result != FSE_OK && fs_result != FSE_EXIST) {
file_worker_show_error_internal(file_worker, "Cannot rename\n file/directory");
return false;
}
return file_worker_check_common_errors(file_worker);
}
bool file_worker_check_errors(FileWorker* file_worker) {
return file_worker_check_common_errors(file_worker);
}
bool file_worker_is_file_exist(FileWorker* file_worker, const char* filename, bool* exist) {
File* file = storage_file_alloc(file_worker->api);
*exist = storage_file_open(file, filename, FSAM_READ, FSOM_OPEN_EXISTING);
storage_file_close(file);
storage_file_free(file);
bool result = file_worker_check_common_errors(file_worker);
return result;
}

249
lib/app-scened-template/file_worker.h
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@@ -1,249 +0,0 @@
#pragma once
#include <m-string.h>
#include <storage/storage.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief File operations helper class.
* Automatically opens API records, shows error message on error.
*/
typedef struct FileWorker FileWorker;
/**
* @brief Allocate FileWorker
*
* @param silent do not show errors except from file_worker_show_error fn
* @return FileWorker*
*/
FileWorker* file_worker_alloc(bool silent);
/**
* @brief free FileWorker
*
* @param file_worker
*/
void file_worker_free(FileWorker* file_worker);
/**
* @brief Open file
*
* @param file_worker FileWorker instance
* @param filename
* @param access_mode
* @param open_mode
* @return true on success
*/
bool file_worker_open(
FileWorker* file_worker,
const char* filename,
FS_AccessMode access_mode,
FS_OpenMode open_mode);
/**
* @brief Close file
*
* @param file_worker FileWorker instance
* @return true on success
*/
bool file_worker_close(FileWorker* file_worker);
/**
* @brief Creates a directory. Doesn't show error if directory exist.
*
* @param file_worker FileWorker instance
* @param dirname
* @return true on success
*/
bool file_worker_mkdir(FileWorker* file_worker, const char* dirname);
/**
* @brief Removes the file. Doesn't show error if file doesn't exist.
*
* @param file_worker FileWorker instance
* @param filename
* @return true on success
*/
bool file_worker_remove(FileWorker* file_worker, const char* filename);
/**
* @brief Get next free filename.
*
* @param file_worker FileWorker instance
* @param dirname
* @param filename
* @param fileextension
* @param nextfilename return name
*/
void file_worker_get_next_filename(
FileWorker* file_worker,
const char* dirname,
const char* filename,
const char* fileextension,
string_t nextfilename);
/**
* @brief Reads data from a file.
*
* @param file_worker FileWorker instance
* @param buffer
* @param bytes_to_read
* @return true on success
*/
bool file_worker_read(FileWorker* file_worker, void* buffer, uint16_t bytes_to_read);
/**
* @brief Reads data from a file until separator or EOF is found.
* Moves seek pointer to the next symbol after the separator. The separator is not included in the result.
*
* @param file_worker FileWorker instance
* @param result
* @param separator
* @return true on success
*/
bool file_worker_read_until(FileWorker* file_worker, string_t result, char separator);
/**
* @brief Reads data in hexadecimal space-delimited format. For example "AF FF" in a file - [175, 255] in a read buffer.
*
* @param file_worker FileWorker instance
* @param buffer
* @param bytes_to_read
* @return true on success
*/
bool file_worker_read_hex(FileWorker* file_worker, uint8_t* buffer, uint16_t bytes_to_read);
/**
* @brief Read seek pointer value
*
* @param file_worker FileWorker instance
* @param position
* @return true on success
*/
bool file_worker_tell(FileWorker* file_worker, uint64_t* position);
/**
* @brief Set seek pointer value
*
* @param file_worker FileWorker instance
* @param position
* @param from_start
* @return true on success
*/
bool file_worker_seek(FileWorker* file_worker, uint64_t position, bool from_start);
/**
* @brief Write data to file.
*
* @param file_worker FileWorker instance
* @param buffer
* @param bytes_to_write
* @return true on success
*/
bool file_worker_write(FileWorker* file_worker, const void* buffer, uint16_t bytes_to_write);
/**
* @brief Write data to file in hexadecimal space-delimited format. For example [175, 255] in a write buffer - "AF FF" in a file.
*
* @param file_worker FileWorker instance
* @param buffer
* @param bytes_to_write
* @return true on success
*/
bool file_worker_write_hex(FileWorker* file_worker, const uint8_t* buffer, uint16_t bytes_to_write);
/**
* @brief Show system file error message
*
* @param file_worker FileWorker instance
* @param error_text
*/
void file_worker_show_error(FileWorker* file_worker, const char* error_text);
/**
* @brief Show system file select widget
*
* @param file_worker FileWorker instance
* @param path path to directory
* @param extension file extension to be offered for selection
* @param selected_filename buffer where the selected filename will be saved
* @param selected_filename_size and the size of this buffer
* @param preselected_filename filename to be preselected
* @return bool whether a file was selected
*/
bool file_worker_file_select(
FileWorker* file_worker,
const char* path,
const char* extension,
char* selected_filename,
uint8_t selected_filename_size,
const char* preselected_filename);
/**
* @brief Reads data from a file until separator or EOF is found.
* The separator is included in the result.
*
* @param file_worker FileWorker instance
* @param str_result
* @param file_buf
* @param file_buf_cnt
* @param max_length
* @param separator
* @return true on success
*/
bool file_worker_read_until_buffered(
FileWorker* file_worker,
string_t str_result,
char* file_buf,
size_t* file_buf_cnt,
size_t max_length,
char separator);
/**
* @brief Gets value from key
*
* @param file_worker FileWorker instance
* @param key key
* @param delimeter key-value delimeter
* @param value value for given key
* @return true on success
*/
bool file_worker_get_value_from_key(
FileWorker* file_worker,
string_t key,
char delimiter,
string_t value);
/**
* @brief Check whether file exist or not
*
* @param file_worker FileWorker instance
* @param filename
* @param exist - flag to show file exist
* @return true on success
*/
bool file_worker_is_file_exist(FileWorker* file_worker, const char* filename, bool* exist);
/**
* @brief Rename file or directory
*
* @param file_worker FileWorker instance
* @param old_filename
* @param new_filename
* @return true on success
*/
bool file_worker_rename(FileWorker* file_worker, const char* old_path, const char* new_path);
/**
* @brief Check errors
*
* @param file_worker FileWorker instance
* @return true on success
*/
bool file_worker_check_errors(FileWorker* file_worker);
#ifdef __cplusplus
}
#endif

94
lib/app-scened-template/file_worker_cpp.cpp
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@@ -1,94 +0,0 @@
#include "file_worker_cpp.h"
#include <lib/toolbox/hex.h>
FileWorkerCpp::FileWorkerCpp(bool _silent) {
file_worker = file_worker_alloc(_silent);
}
FileWorkerCpp::~FileWorkerCpp() {
file_worker_free(file_worker);
}
bool FileWorkerCpp::open(const char* filename, FS_AccessMode access_mode, FS_OpenMode open_mode) {
return file_worker_open(file_worker, filename, access_mode, open_mode);
}
bool FileWorkerCpp::close() {
return file_worker_close(file_worker);
}
bool FileWorkerCpp::mkdir(const char* dirname) {
return file_worker_mkdir(file_worker, dirname);
}
bool FileWorkerCpp::remove(const char* filename) {
return file_worker_remove(file_worker, filename);
}
bool FileWorkerCpp::read(void* buffer, uint16_t bytes_to_read) {
return file_worker_read(file_worker, buffer, bytes_to_read);
}
bool FileWorkerCpp::read_until(string_t str_result, char separator) {
return file_worker_read_until(file_worker, str_result, separator);
}
bool FileWorkerCpp::read_hex(uint8_t* buffer, uint16_t bytes_to_read) {
return file_worker_read_hex(file_worker, buffer, bytes_to_read);
}
bool FileWorkerCpp::tell(uint64_t* position) {
return file_worker_tell(file_worker, position);
}
bool FileWorkerCpp::seek(uint64_t position, bool from_start) {
return file_worker_seek(file_worker, position, from_start);
}
bool FileWorkerCpp::write(const void* buffer, uint16_t bytes_to_write) {
return file_worker_write(file_worker, buffer, bytes_to_write);
}
bool FileWorkerCpp::write_hex(const uint8_t* buffer, uint16_t bytes_to_write) {
return file_worker_write_hex(file_worker, buffer, bytes_to_write);
}
void FileWorkerCpp::show_error(const char* error_text) {
file_worker_show_error(file_worker, error_text);
}
bool FileWorkerCpp::file_select(
const char* path,
const char* extension,
char* result,
uint8_t result_size,
const char* selected_filename) {
return file_worker_file_select(
file_worker, path, extension, result, result_size, selected_filename);
}
bool FileWorkerCpp::read_until_buffered(
string_t str_result,
char* file_buf,
size_t* file_buf_cnt,
size_t max_length,
char separator) {
return file_worker_read_until_buffered(
file_worker, str_result, file_buf, file_buf_cnt, max_length, separator);
}
bool FileWorkerCpp::get_value_from_key(string_t key, char delimiter, string_t value) {
return file_worker_get_value_from_key(file_worker, key, delimiter, value);
}
bool FileWorkerCpp::is_file_exist(const char* filename, bool* exist) {
return file_worker_is_file_exist(file_worker, filename, exist);
}
bool FileWorkerCpp::rename(const char* old_path, const char* new_path) {
return file_worker_rename(file_worker, old_path, new_path);
}
bool FileWorkerCpp::check_errors() {
return file_worker_check_errors(file_worker);
}

190
lib/app-scened-template/file_worker_cpp.h
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@@ -1,190 +0,0 @@
#pragma once
#include "file_worker.h"
/**
* @brief File operations helper class.
* Automatically opens API records, shows error message on error.
*/
class FileWorkerCpp {
public:
FileWorkerCpp(bool silent = false);
~FileWorkerCpp();
/**
* @brief Open file
*
* @param filename
* @param access_mode
* @param open_mode
* @return true on success
*/
bool open(const char* filename, FS_AccessMode access_mode, FS_OpenMode open_mode);
/**
* @brief Close file
*
* @return true on success
*/
bool close();
/**
* @brief Creates a directory. Doesn't show error if directory exist.
*
* @param dirname
* @return true on success
*/
bool mkdir(const char* dirname);
/**
* @brief Removes the file. Doesn't show error if file doesn't exist.
*
* @param filename
* @return true on success
*/
bool remove(const char* filename);
/**
* @brief Reads data from a file.
*
* @param buffer
* @param bytes_to_read
* @return true on success
*/
bool read(void* buffer, uint16_t bytes_to_read = 1);
/**
* @brief Reads data from a file until separator or EOF is found.
* Moves seek pointer to the next symbol after the separator. The separator is not included in the result.
*
* @param result
* @param separator
* @return true on success
*/
bool read_until(string_t result, char separator = '\n');
/**
* @brief Reads data in hexadecimal space-delimited format. For example "AF FF" in a file - [175, 255] in a read buffer.
*
* @param buffer
* @param bytes_to_read
* @return true on success
*/
bool read_hex(uint8_t* buffer, uint16_t bytes_to_read = 1);
/**
* @brief Read seek pointer value
*
* @param position
* @return true on success
*/
bool tell(uint64_t* position);
/**
* @brief Set seek pointer value
*
* @param position
* @param from_start
* @return true on success
*/
bool seek(uint64_t position, bool from_start);
/**
* @brief Write data to file.
*
* @param buffer
* @param bytes_to_write
* @return true on success
*/
bool write(const void* buffer, uint16_t bytes_to_write = 1);
/**
* @brief Write data to file in hexadecimal space-delimited format. For example [175, 255] in a write buffer - "AF FF" in a file.
*
* @param buffer
* @param bytes_to_write
* @return true on success
*/
bool write_hex(const uint8_t* buffer, uint16_t bytes_to_write = 1);
/**
* @brief Show system file error message
*
* @param error_text
*/
void show_error(const char* error_text);
/**
* @brief Show system file select widget
*
* @param path
* @param extension
* @param result
* @param result_size
* @param selected_filename
* @return true if file was selected
*/
bool file_select(
const char* path,
const char* extension,
char* result,
uint8_t result_size,
const char* selected_filename);
/**
* @brief Reads data from a file until separator or EOF is found.
* Moves seek pointer to the next symbol after the separator. The separator is included in the result.
*
* @param result
* @param file_buf
* @param file_buf_cnt
* @param max_length
* @param separator
* @return true on success
*/
bool read_until_buffered(
string_t str_result,
char* file_buf,
size_t* file_buf_cnt,
size_t max_length,
char separator = '\n');
/**
* @brief Gets value from key
*
* @param file_worker FileWorker instance
* @param key key
* @param delimeter key-value delimeter
* @param value value for given key
* @return true on success
*/
bool get_value_from_key(string_t key, char delimiter, string_t value);
/**
* @brief Check whether file exist or not
*
* @param file_worker FileWorker instance
* @param filename
* @param exist - flag to show file exist
* @return true on success
*/
bool is_file_exist(const char* filename, bool* exist);
/**
* @brief Rename file or directory
*
* @param old_filename
* @param new_filename
* @return true on success
*/
bool rename(const char* old_path, const char* new_path);
/**
* @brief Check errors
*
* @return true if no errors
*/
bool check_errors();
private:
FileWorker* file_worker;
};