51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
|
#pragma once
|
||
|
|
|
||
|
|
#include "./file2.hpp"
|
||
|
|
|
||
|
|
#include <fstream>
|
||
|
|
|
||
|
|
// std fstream backed files
|
||
|
|
|
||
|
|
// write steam file
|
||
|
|
// no preallocation required, but seeking is disabled
|
||
|
|
struct File2WFile : public File2I {
|
||
|
|
std::fstream _file;
|
||
|
|
|
||
|
|
// dont truncate by default
|
||
|
|
File2WFile(std::string_view file_path, bool trunc = false);
|
||
|
|
|
||
|
|
virtual ~File2WFile(void) {}
|
||
|
|
|
||
|
|
bool isGood(void) override;
|
||
|
|
|
||
|
|
bool write(const ByteSpan data, int64_t pos = -1) override;
|
||
|
|
std::variant<ByteSpan, std::vector<uint8_t>> read(uint64_t size, int64_t pos = -1) override;
|
||
|
|
};
|
||
|
|
|
||
|
|
// read write, requires an existing file, file size is fixed
|
||
|
|
struct File2RWFile : public File2I {
|
||
|
|
std::fstream _file;
|
||
|
|
|
||
|
|
// dont truncate by default
|
||
|
|
// pass -1 for fetching the size from file
|
||
|
|
File2RWFile(std::string_view file_path, uint64_t file_size = -1, bool trunc = false);
|
||
|
|
|
||
|
|
virtual ~File2RWFile(void) {}
|
||
|
|
|
||
|
|
bool isGood(void) override;
|
||
|
|
|
||
|
|
bool write(const ByteSpan data, int64_t pos = -1) override;
|
||
|
|
std::variant<ByteSpan, std::vector<uint8_t>> read(uint64_t size, int64_t pos = -1) override;
|
||
|
|
};
|
||
|
|
|
||
|
|
// cut down interface (write disabled)
|
||
|
|
// TODO: remove
|
||
|
|
struct File2RFile : public File2RWFile {
|
||
|
|
File2RFile(std::string_view file_path) : File2RWFile(file_path) {}
|
||
|
|
virtual ~File2RFile(void) {}
|
||
|
|
using File2RWFile::isGood;
|
||
|
|
using File2RWFile::read;
|
||
|
|
bool write(const ByteSpan, int64_t = -1) override { return false; }
|
||
|
|
};
|
||
|
|
|