54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
#pragma once
|
|
|
|
#include "./file.hpp"
|
|
|
|
#include <fstream>
|
|
|
|
struct FileRFile : public FileI {
|
|
std::ifstream _file;
|
|
|
|
FileRFile(std::string_view file_path) : _file(static_cast<std::string>(file_path), std::ios::binary) {
|
|
if (!_file.is_open()) {
|
|
return; // TODO: error
|
|
}
|
|
|
|
// figure out size
|
|
_file.seekg(0, _file.end);
|
|
_file_size = _file.tellg();
|
|
_file.seekg(0, _file.beg);
|
|
}
|
|
|
|
//FileRFile(std::ifstream&& other_file) : _file(std::move(other_file)) {}
|
|
//FileRFile(std::ifstream&& other_file, size_t file_size) : _file(std::move(other_file)), _file_size(file_size) {}
|
|
|
|
virtual ~FileRFile(void) {}
|
|
|
|
bool isGood(void) override {
|
|
return _file.is_open() && _file.good();
|
|
}
|
|
|
|
std::vector<uint8_t> read(uint64_t pos, uint32_t size) override {
|
|
if (_file_size > 0 && pos >= _file_size) {
|
|
return {};
|
|
}
|
|
|
|
// TODO: error check
|
|
_file.seekg(pos);
|
|
|
|
// TODO: optimize
|
|
std::vector<uint8_t> chunk;
|
|
int read_char;
|
|
for (size_t i = 0; i < size && (_file_size == 0 || i+pos < _file_size) && (read_char = _file.get()) != std::ifstream::traits_type::eof(); i++) {
|
|
chunk.push_back(read_char);
|
|
}
|
|
|
|
_bytes_read += chunk.size();
|
|
|
|
return chunk;
|
|
}
|
|
|
|
// read only
|
|
bool write(uint64_t, const std::vector<uint8_t>&) override { return false; }
|
|
};
|
|
|