flipperzero-firmware/lib/file_reader/file_reader.cpp

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#include "file_reader/file_reader.hpp"
std::string FileReader::getline(File* file) {
std::string str;
size_t newline_index = 0;
bool found_eol = false;
while(1) {
if(file_buf_cnt > 0) {
size_t end_index = 0;
char* endline_ptr = (char*)memchr(file_buf, '\n', 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);
}
str.append(file_buf, end_index);
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 +=
fs_api->file.read(file, &file_buf[file_buf_cnt], sizeof(file_buf) - file_buf_cnt);
if(file_buf_cnt == 0) {
break; // end of reading
}
}
return str;
}