flipperzero-firmware/lib/app-scened-template/file-worker.cpp

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#include "file-worker.h"
FileWorker::FileWorker(bool _silent)
: fs_api{"sdcard"}
, sd_ex_api{"sdcard-ex"} {
silent = _silent;
}
FileWorker::~FileWorker() {
}
bool FileWorker::open(const char* filename, FS_AccessMode access_mode, FS_OpenMode open_mode) {
bool result = fs_api.get()->file.open(&file, filename, access_mode, open_mode);
if(!result) {
show_error_internal("Cannot open\nfile");
close();
return false;
}
return check_common_errors();
}
bool FileWorker::close() {
fs_api.get()->file.close(&file);
return check_common_errors();
}
bool FileWorker::mkdir(const char* dirname) {
FS_Error fs_result = fs_api.get()->common.mkdir(dirname);
if(fs_result != FSE_OK && fs_result != FSE_EXIST) {
show_error_internal("Cannot create\nfolder");
return false;
};
return check_common_errors();
}
bool FileWorker::remove(const char* filename) {
FS_Error fs_result = fs_api.get()->common.remove(filename);
if(fs_result != FSE_OK && fs_result != FSE_NOT_EXIST) {
show_error_internal("Cannot remove\nold file");
return false;
};
return check_common_errors();
}
bool FileWorker::read(void* buffer, uint16_t bytes_to_read) {
if(!read_internal(buffer, bytes_to_read)) {
return false;
}
return check_common_errors();
}
bool FileWorker::read_until(string_t str_result, char separator) {
string_clean(str_result);
const uint8_t buffer_size = 32;
uint8_t buffer[buffer_size];
do {
uint16_t read_count = fs_api.get()->file.read(&file, buffer, buffer_size);
if(file.error_id != FSE_OK) {
show_error_internal("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(!tell_internal(&position)) {
return false;
}
position = position - read_count + i + 1;
if(!seek_internal(position, true)) {
return false;
}
result = true;
break;
} else {
string_push_back(str_result, buffer[i]);
}
}
if(result || read_count == 0) {
break;
}
} while(true);
return check_common_errors();
}
bool FileWorker::read_hex(uint8_t* buffer, uint16_t bytes_to_read) {
uint8_t text[2];
for(uint8_t i = 0; i < bytes_to_read; i++) {
if(i != 0) {
// space
if(!read_internal(text, 1)) {
return false;
}
}
// actual data
if(!read_internal(text, 2)) {
return false;
}
// convert hex value to byte
buffer[i] = strtol(reinterpret_cast<char*>(text), NULL, 16);
}
return check_common_errors();
}
bool FileWorker::tell(uint64_t* position) {
if(!tell_internal(position)) {
return false;
}
return check_common_errors();
}
bool FileWorker::seek(uint64_t position, bool from_start) {
if(!seek_internal(position, from_start)) {
return false;
}
return check_common_errors();
}
bool FileWorker::write(const void* buffer, uint16_t bytes_to_write) {
if(!write_internal(buffer, bytes_to_write)) {
return false;
}
return check_common_errors();
}
bool FileWorker::write_hex(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(!write_internal(space, 1)) {
return false;
}
}
if(!write_internal(byte_text, 2)) {
return false;
}
}
return check_common_errors();
}
void FileWorker::show_error(const char* error_text) {
sd_ex_api.get()->show_error(sd_ex_api.get()->context, error_text);
}
bool FileWorker::file_select(
const char* path,
const char* extension,
char* result,
uint8_t result_size,
char* selected_filename) {
return sd_ex_api.get()->file_select(
sd_ex_api.get()->context, path, extension, result, result_size, selected_filename);
}
bool FileWorker::check_common_errors() {
sd_ex_api.get()->check_error(sd_ex_api.get()->context);
return true;
}
void FileWorker::show_error_internal(const char* error_text) {
if(!silent) {
show_error(error_text);
}
}
bool FileWorker::read_internal(void* buffer, uint16_t bytes_to_read) {
uint16_t read_count = fs_api.get()->file.read(&file, buffer, bytes_to_read);
if(file.error_id != FSE_OK || read_count != bytes_to_read) {
show_error_internal("Cannot read\nfile");
return false;
}
return true;
}
bool FileWorker::write_internal(const void* buffer, uint16_t bytes_to_write) {
uint16_t write_count = fs_api.get()->file.write(&file, buffer, bytes_to_write);
if(file.error_id != FSE_OK || write_count != bytes_to_write) {
show_error_internal("Cannot write\nto file");
return false;
}
return true;
}
bool FileWorker::tell_internal(uint64_t* position) {
*position = fs_api.get()->file.tell(&file);
if(file.error_id != FSE_OK) {
show_error_internal("Cannot tell\nfile offset");
return false;
}
return true;
}
bool FileWorker::seek_internal(uint64_t position, bool from_start) {
fs_api.get()->file.seek(&file, position, from_start);
if(file.error_id != FSE_OK) {
show_error_internal("Cannot seek\nfile");
return false;
}
return true;
}