mirror of https://github.com/libAthena/athena.git
112 lines
2.7 KiB
C++
112 lines
2.7 KiB
C++
#pragma once
|
|
|
|
#ifdef _WIN32
|
|
#ifndef WIN32_LEAN_AND_MEAN
|
|
#define WIN32_LEAN_AND_MEAN
|
|
#endif
|
|
#include <windows.h>
|
|
#else
|
|
#include <cstdio>
|
|
#endif
|
|
|
|
#include "athena/IStreamWriter.hpp"
|
|
#include "athena/Types.hpp"
|
|
|
|
namespace athena::io {
|
|
class FileWriter : public IStreamWriter {
|
|
public:
|
|
explicit FileWriter(std::string_view filename, bool overwrite = true, bool globalErr = true);
|
|
explicit FileWriter(std::wstring_view filename, bool overwrite = true, bool globalErr = true);
|
|
~FileWriter() override;
|
|
|
|
std::string filename() const {
|
|
#ifdef _WIN32
|
|
return utility::wideToUtf8(m_filename);
|
|
#else
|
|
return m_filename;
|
|
#endif
|
|
}
|
|
std::wstring wfilename() const {
|
|
#ifdef _WIN32
|
|
return m_filename;
|
|
#else
|
|
return utility::utf8ToWide(m_filename);
|
|
#endif
|
|
}
|
|
|
|
void open(bool overwrite = true);
|
|
void close();
|
|
bool isOpen() const { return m_fileHandle != nullptr; }
|
|
void seek(atInt64 pos, SeekOrigin origin = SeekOrigin::Current) override;
|
|
atUint64 position() const override;
|
|
atUint64 length() const override;
|
|
void writeUBytes(const atUint8* data, atUint64 len) override;
|
|
|
|
#ifdef _WIN32
|
|
using HandleType = HANDLE;
|
|
#else
|
|
using HandleType = FILE*;
|
|
#endif
|
|
|
|
HandleType _fileHandle() { return m_fileHandle; }
|
|
|
|
private:
|
|
#ifdef _WIN32
|
|
std::wstring m_filename;
|
|
#else
|
|
std::string m_filename;
|
|
#endif
|
|
HandleType m_fileHandle;
|
|
bool m_globalErr;
|
|
};
|
|
|
|
class TransactionalFileWriter : public IStreamWriter {
|
|
#ifdef _WIN32
|
|
std::wstring m_filename;
|
|
#else
|
|
std::string m_filename;
|
|
#endif
|
|
bool m_overwrite, m_globalErr;
|
|
std::vector<uint8_t> m_deferredBuffer;
|
|
atUint64 m_position = 0;
|
|
|
|
public:
|
|
explicit TransactionalFileWriter(std::string_view filename, bool overwrite = true, bool globalErr = true)
|
|
: m_overwrite(overwrite), m_globalErr(globalErr) {
|
|
#ifdef _WIN32
|
|
m_filename = utility::utf8ToWide(filename);
|
|
#else
|
|
m_filename = filename;
|
|
#endif
|
|
}
|
|
explicit TransactionalFileWriter(std::wstring_view filename, bool overwrite = true, bool globalErr = true)
|
|
: m_overwrite(overwrite), m_globalErr(globalErr) {
|
|
#ifdef _WIN32
|
|
m_filename = filename;
|
|
#else
|
|
m_filename = utility::wideToUtf8(filename);
|
|
#endif
|
|
}
|
|
|
|
void flush() {
|
|
if (m_deferredBuffer.size()) {
|
|
FileWriter w(m_filename, m_overwrite, m_globalErr);
|
|
w.writeUBytes(m_deferredBuffer.data(), m_deferredBuffer.size());
|
|
cancel();
|
|
}
|
|
}
|
|
|
|
void cancel() {
|
|
m_deferredBuffer.clear();
|
|
m_position = 0;
|
|
}
|
|
|
|
atUint64 position() const override { return m_position; }
|
|
atUint64 length() const override { return m_deferredBuffer.size(); }
|
|
void seek(atInt64 pos, SeekOrigin origin = SeekOrigin::Current) override;
|
|
void writeUBytes(const atUint8* data, atUint64 len) override;
|
|
|
|
~TransactionalFileWriter() override { flush(); }
|
|
};
|
|
} // namespace athena::io
|