solanaceae_util/solanaceae/file/file2.hpp
2024-03-28 15:34:43 +01:00

26 lines
654 B
C++

#pragma once
#include <solanaceae/util/span.hpp>
#include <vector>
#include <variant>
struct File2I {
// read only
uint64_t _file_size {0};
const bool can_write {false};
const bool can_read {false};
// TODO: non-seekable files?
explicit File2I(bool can_write_, bool can_read_) : can_write(can_write_), can_read(can_read_) {}
virtual ~File2I(void) {}
virtual bool isGood(void) = 0;
// pos -1 means stream, append to last written, or read position (independent, like FILE*s)
virtual bool write(const ByteSpan data, int64_t pos = -1) = 0;
virtual std::variant<ByteSpan, std::vector<uint8_t>> read(uint64_t size, int64_t pos = -1) = 0;
};