399 lines
10 KiB
C
399 lines
10 KiB
C
|
/*
|
||
|
|
* mptFileIO.h
|
||
|
|
* -----------
|
||
|
|
* Purpose: A wrapper around std::fstream, enforcing usage of mpt::PathString.
|
||
|
|
* Notes : You should only ever use these wrappers instead of plain std::fstream classes.
|
||
|
|
* Authors: OpenMPT Devs
|
||
|
|
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include "openmpt/all/BuildSettings.hpp"
|
||
|
|
|
||
|
|
#if defined(MPT_ENABLE_FILEIO)
|
||
|
|
|
||
|
|
#include "mpt/io_read/filecursor_memory.hpp"
|
||
|
|
#include "mpt/io_read/filecursor_stdstream.hpp"
|
||
|
|
|
||
|
|
#include "../common/mptString.h"
|
||
|
|
#include "../common/mptPathString.h"
|
||
|
|
#include "../common/FileReaderFwd.h"
|
||
|
|
|
||
|
|
#if defined(MPT_COMPILER_QUIRK_WINDOWS_FSTREAM_NO_WCHAR)
|
||
|
|
#if MPT_GCC_AT_LEAST(9,1,0)
|
||
|
|
#include <filesystem>
|
||
|
|
#endif // MPT_GCC_AT_LEAST(9,1,0)
|
||
|
|
#endif // MPT_COMPILER_QUIRK_WINDOWS_FSTREAM_NO_WCHAR
|
||
|
|
#include <fstream>
|
||
|
|
#include <ios>
|
||
|
|
#include <ostream>
|
||
|
|
#include <streambuf>
|
||
|
|
#include <utility>
|
||
|
|
|
||
|
|
#if MPT_COMPILER_MSVC
|
||
|
|
#include <cstdio>
|
||
|
|
#endif // !MPT_COMPILER_MSVC
|
||
|
|
|
||
|
|
#ifdef MODPLUG_TRACKER
|
||
|
|
#if MPT_OS_WINDOWS
|
||
|
|
#include <windows.h>
|
||
|
|
#endif // MPT_OS_WINDOWS
|
||
|
|
#endif // MODPLUG_TRACKER
|
||
|
|
|
||
|
|
#endif // MPT_ENABLE_FILEIO
|
||
|
|
|
||
|
|
|
||
|
|
OPENMPT_NAMESPACE_BEGIN
|
||
|
|
|
||
|
|
|
||
|
|
#if defined(MPT_ENABLE_FILEIO)
|
||
|
|
|
||
|
|
|
||
|
|
// Sets the NTFS compression attribute on the file or directory.
|
||
|
|
// Requires read and write permissions for already opened files.
|
||
|
|
// Returns true if the attribute has been set.
|
||
|
|
// In almost all cases, the return value should be ignored because most filesystems other than NTFS do not support compression.
|
||
|
|
#ifdef MODPLUG_TRACKER
|
||
|
|
#if MPT_OS_WINDOWS
|
||
|
|
bool SetFilesystemCompression(HANDLE hFile);
|
||
|
|
bool SetFilesystemCompression(int fd);
|
||
|
|
bool SetFilesystemCompression(const mpt::PathString &filename);
|
||
|
|
#endif // MPT_OS_WINDOWS
|
||
|
|
#endif // MODPLUG_TRACKER
|
||
|
|
|
||
|
|
|
||
|
|
namespace mpt
|
||
|
|
{
|
||
|
|
|
||
|
|
namespace detail
|
||
|
|
{
|
||
|
|
|
||
|
|
template<typename Tbase>
|
||
|
|
inline void fstream_open(Tbase & base, const mpt::PathString & filename, std::ios_base::openmode mode)
|
||
|
|
{
|
||
|
|
#if defined(MPT_COMPILER_QUIRK_WINDOWS_FSTREAM_NO_WCHAR)
|
||
|
|
#if MPT_GCC_AT_LEAST(9,1,0)
|
||
|
|
base.open(static_cast<std::filesystem::path>(filename.AsNative()), mode);
|
||
|
|
#else // !MPT_GCC_AT_LEAST(9,1,0)
|
||
|
|
// Warning: MinGW with GCC earlier than 9.1 detected. Standard library does neither provide std::fstream wchar_t overloads nor std::filesystem with wchar_t support. Unicode filename support is thus unavailable.
|
||
|
|
base.open(mpt::ToCharset(mpt::Charset::Locale, filename.AsNative()).c_str(), mode);
|
||
|
|
#endif // MPT_GCC_AT_LEAST(9,1,0)
|
||
|
|
#else // !MPT_COMPILER_QUIRK_WINDOWS_FSTREAM_NO_WCHAR
|
||
|
|
base.open(filename.AsNativePrefixed().c_str(), mode);
|
||
|
|
#endif // MPT_COMPILER_QUIRK_WINDOWS_FSTREAM_NO_WCHAR
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace detail
|
||
|
|
|
||
|
|
// We cannot rely on implicit conversion of mpt::PathString to std::filesystem::path when constructing std::fstream
|
||
|
|
// because of broken overload implementation in GCC libstdc++ 8, 9, 10.
|
||
|
|
// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95642
|
||
|
|
// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90704
|
||
|
|
|
||
|
|
class fstream
|
||
|
|
: public std::fstream
|
||
|
|
{
|
||
|
|
private:
|
||
|
|
typedef std::fstream Tbase;
|
||
|
|
public:
|
||
|
|
fstream() {}
|
||
|
|
fstream(const mpt::PathString & filename, std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out)
|
||
|
|
{
|
||
|
|
detail::fstream_open<Tbase>(*this, filename, mode);
|
||
|
|
}
|
||
|
|
#if MPT_COMPILER_MSVC
|
||
|
|
protected:
|
||
|
|
fstream(std::FILE * file)
|
||
|
|
: std::fstream(file)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
#endif // MPT_COMPILER_MSVC
|
||
|
|
public:
|
||
|
|
void open(const mpt::PathString & filename, std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out)
|
||
|
|
{
|
||
|
|
detail::fstream_open<Tbase>(*this, filename, mode);
|
||
|
|
}
|
||
|
|
void open(const char * filename, std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) = delete;
|
||
|
|
void open(const std::string & filename, std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) = delete;
|
||
|
|
#if MPT_OS_WINDOWS
|
||
|
|
void open(const wchar_t * filename, std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) = delete;
|
||
|
|
void open(const std::wstring & filename, std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) = delete;
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
class ifstream
|
||
|
|
: public std::ifstream
|
||
|
|
{
|
||
|
|
private:
|
||
|
|
typedef std::ifstream Tbase;
|
||
|
|
public:
|
||
|
|
ifstream() {}
|
||
|
|
ifstream(const mpt::PathString & filename, std::ios_base::openmode mode = std::ios_base::in)
|
||
|
|
{
|
||
|
|
detail::fstream_open<Tbase>(*this, filename, mode);
|
||
|
|
}
|
||
|
|
#if MPT_COMPILER_MSVC
|
||
|
|
protected:
|
||
|
|
ifstream(std::FILE * file)
|
||
|
|
: std::ifstream(file)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
#endif // MPT_COMPILER_MSVC
|
||
|
|
public:
|
||
|
|
void open(const mpt::PathString & filename, std::ios_base::openmode mode = std::ios_base::in)
|
||
|
|
{
|
||
|
|
detail::fstream_open<Tbase>(*this, filename, mode);
|
||
|
|
}
|
||
|
|
void open(const char * filename, std::ios_base::openmode mode = std::ios_base::in) = delete;
|
||
|
|
void open(const std::string & filename, std::ios_base::openmode mode = std::ios_base::in) = delete;
|
||
|
|
#if MPT_OS_WINDOWS
|
||
|
|
void open(const wchar_t * filename, std::ios_base::openmode mode = std::ios_base::in) = delete;
|
||
|
|
void open(const std::wstring & filename, std::ios_base::openmode mode = std::ios_base::in) = delete;
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
class ofstream
|
||
|
|
: public std::ofstream
|
||
|
|
{
|
||
|
|
private:
|
||
|
|
typedef std::ofstream Tbase;
|
||
|
|
public:
|
||
|
|
ofstream() {}
|
||
|
|
ofstream(const mpt::PathString & filename, std::ios_base::openmode mode = std::ios_base::out)
|
||
|
|
{
|
||
|
|
detail::fstream_open<Tbase>(*this, filename, mode);
|
||
|
|
}
|
||
|
|
#if MPT_COMPILER_MSVC
|
||
|
|
protected:
|
||
|
|
ofstream(std::FILE * file)
|
||
|
|
: std::ofstream(file)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
#endif // MPT_COMPILER_MSVC
|
||
|
|
public:
|
||
|
|
void open(const mpt::PathString & filename, std::ios_base::openmode mode = std::ios_base::out)
|
||
|
|
{
|
||
|
|
detail::fstream_open<Tbase>(*this, filename, mode);
|
||
|
|
}
|
||
|
|
void open(const char * filename, std::ios_base::openmode mode = std::ios_base::out) = delete;
|
||
|
|
void open(const std::string & filename, std::ios_base::openmode mode = std::ios_base::out) = delete;
|
||
|
|
#if MPT_OS_WINDOWS
|
||
|
|
void open(const wchar_t * filename, std::ios_base::openmode mode = std::ios_base::out) = delete;
|
||
|
|
void open(const std::wstring & filename, std::ios_base::openmode mode = std::ios_base::out) = delete;
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
enum class FlushMode
|
||
|
|
{
|
||
|
|
None = 0, // no explicit flushes at all
|
||
|
|
Single = 1, // explicitly flush higher-leverl API layers
|
||
|
|
Full = 2, // explicitly flush *all* layers, up to and including disk write caches
|
||
|
|
};
|
||
|
|
|
||
|
|
inline FlushMode FlushModeFromBool(bool flush)
|
||
|
|
{
|
||
|
|
return flush ? FlushMode::Full : FlushMode::None;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef MODPLUG_TRACKER
|
||
|
|
|
||
|
|
class SafeOutputFile
|
||
|
|
{
|
||
|
|
private:
|
||
|
|
FlushMode m_FlushMode;
|
||
|
|
#if MPT_COMPILER_MSVC
|
||
|
|
std::FILE *m_f = nullptr;
|
||
|
|
#else // !MPT_COMPILER_MSVC
|
||
|
|
mpt::ofstream m_s;
|
||
|
|
#endif // MPT_COMPILER_MSVC
|
||
|
|
#if MPT_COMPILER_MSVC
|
||
|
|
class FILEostream
|
||
|
|
: public mpt::ofstream
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
FILEostream(std::FILE * file)
|
||
|
|
: mpt::ofstream(file)
|
||
|
|
{
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
FILEostream m_s;
|
||
|
|
static mpt::tstring convert_mode(std::ios_base::openmode mode, FlushMode flushMode);
|
||
|
|
std::FILE * internal_fopen(const mpt::PathString &filename, std::ios_base::openmode mode, FlushMode flushMode);
|
||
|
|
#endif // MPT_COMPILER_MSVC
|
||
|
|
public:
|
||
|
|
SafeOutputFile() = delete;
|
||
|
|
explicit SafeOutputFile(const mpt::PathString &filename, std::ios_base::openmode mode = std::ios_base::out, FlushMode flushMode = FlushMode::Full)
|
||
|
|
: m_FlushMode(flushMode)
|
||
|
|
#if MPT_COMPILER_MSVC
|
||
|
|
, m_s(internal_fopen(filename, mode | std::ios_base::out, flushMode))
|
||
|
|
#else // !MPT_COMPILER_MSVC
|
||
|
|
, m_s(filename, mode)
|
||
|
|
#endif // MPT_COMPILER_MSVC
|
||
|
|
{
|
||
|
|
if(!stream().is_open())
|
||
|
|
{
|
||
|
|
stream().setstate(mpt::ofstream::failbit);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
mpt::ofstream& stream()
|
||
|
|
{
|
||
|
|
return m_s;
|
||
|
|
}
|
||
|
|
operator mpt::ofstream& ()
|
||
|
|
{
|
||
|
|
return stream();
|
||
|
|
}
|
||
|
|
const mpt::ofstream& stream() const
|
||
|
|
{
|
||
|
|
return m_s;
|
||
|
|
}
|
||
|
|
operator const mpt::ofstream& () const
|
||
|
|
{
|
||
|
|
return stream();
|
||
|
|
}
|
||
|
|
operator bool() const
|
||
|
|
{
|
||
|
|
return stream() ? true : false;
|
||
|
|
}
|
||
|
|
bool operator!() const
|
||
|
|
{
|
||
|
|
return stream().operator!();
|
||
|
|
}
|
||
|
|
~SafeOutputFile() noexcept(false);
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif // MODPLUG_TRACKER
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef MODPLUG_TRACKER
|
||
|
|
|
||
|
|
// LazyFileRef is a simple reference to an on-disk file by the means of a
|
||
|
|
// filename which allows easy assignment of the whole file contents to and from
|
||
|
|
// byte buffers.
|
||
|
|
class LazyFileRef {
|
||
|
|
private:
|
||
|
|
const mpt::PathString m_Filename;
|
||
|
|
public:
|
||
|
|
LazyFileRef(const mpt::PathString &filename)
|
||
|
|
: m_Filename(filename)
|
||
|
|
{
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
public:
|
||
|
|
LazyFileRef & operator = (const std::vector<std::byte> &data);
|
||
|
|
LazyFileRef & operator = (const std::vector<char> &data);
|
||
|
|
LazyFileRef & operator = (const std::string &data);
|
||
|
|
operator std::vector<std::byte> () const;
|
||
|
|
operator std::vector<char> () const;
|
||
|
|
operator std::string () const;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif // MODPLUG_TRACKER
|
||
|
|
|
||
|
|
|
||
|
|
} // namespace mpt
|
||
|
|
|
||
|
|
|
||
|
|
class InputFile
|
||
|
|
{
|
||
|
|
private:
|
||
|
|
mpt::PathString m_Filename;
|
||
|
|
mpt::ifstream m_File;
|
||
|
|
bool m_IsValid;
|
||
|
|
bool m_IsCached;
|
||
|
|
std::vector<std::byte> m_Cache;
|
||
|
|
public:
|
||
|
|
InputFile(const mpt::PathString &filename, bool allowWholeFileCaching = false);
|
||
|
|
~InputFile();
|
||
|
|
bool IsValid() const;
|
||
|
|
bool IsCached() const;
|
||
|
|
mpt::PathString GetFilename() const;
|
||
|
|
std::istream& GetStream();
|
||
|
|
mpt::const_byte_span GetCache();
|
||
|
|
private:
|
||
|
|
bool Open(const mpt::PathString &filename, bool allowWholeFileCaching = false);
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
template <typename Targ1>
|
||
|
|
inline FileCursor make_FileCursor(Targ1 &&arg1)
|
||
|
|
{
|
||
|
|
return mpt::IO::make_FileCursor<mpt::PathString>(std::forward<Targ1>(arg1));
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename Targ1, typename Targ2>
|
||
|
|
inline FileCursor make_FileCursor(Targ1 &&arg1, Targ2 &&arg2)
|
||
|
|
{
|
||
|
|
return mpt::IO::make_FileCursor<mpt::PathString>(std::forward<Targ1>(arg1), std::forward<Targ2>(arg2));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// templated in order to reduce header inter-dependencies
|
||
|
|
class InputFile;
|
||
|
|
template <typename TInputFile, std::enable_if_t<std::is_same<TInputFile, InputFile>::value, bool> = true>
|
||
|
|
inline FileCursor make_FileCursor(TInputFile &file)
|
||
|
|
{
|
||
|
|
if(!file.IsValid())
|
||
|
|
{
|
||
|
|
return FileCursor();
|
||
|
|
}
|
||
|
|
if(file.IsCached())
|
||
|
|
{
|
||
|
|
return mpt::IO::make_FileCursor<mpt::PathString>(file.GetCache(), std::make_shared<mpt::PathString>(file.GetFilename()));
|
||
|
|
} else
|
||
|
|
{
|
||
|
|
return mpt::IO::make_FileCursor<mpt::PathString>(file.GetStream(), std::make_shared<mpt::PathString>(file.GetFilename()));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
template <typename Targ1>
|
||
|
|
inline FileCursor GetFileReader(Targ1 &&arg1)
|
||
|
|
{
|
||
|
|
return make_FileCursor(std::forward<Targ1>(arg1));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
template <typename Targ1, typename Targ2>
|
||
|
|
inline FileCursor GetFileReader(Targ1 &&arg1, Targ2 &&arg2)
|
||
|
|
{
|
||
|
|
return make_FileCursor(std::forward<Targ1>(arg1), std::forward<Targ2>(arg2));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#if defined(MODPLUG_TRACKER) && MPT_OS_WINDOWS
|
||
|
|
|
||
|
|
class OnDiskFileWrapper
|
||
|
|
{
|
||
|
|
|
||
|
|
private:
|
||
|
|
|
||
|
|
mpt::PathString m_Filename;
|
||
|
|
bool m_IsTempFile;
|
||
|
|
|
||
|
|
public:
|
||
|
|
|
||
|
|
OnDiskFileWrapper(FileCursor& file, const mpt::PathString& fileNameExtension = P_("tmp"));
|
||
|
|
|
||
|
|
~OnDiskFileWrapper();
|
||
|
|
|
||
|
|
public:
|
||
|
|
|
||
|
|
bool IsValid() const;
|
||
|
|
|
||
|
|
mpt::PathString GetFilename() const;
|
||
|
|
|
||
|
|
}; // class OnDiskFileWrapper
|
||
|
|
|
||
|
|
#endif // MODPLUG_TRACKER && MPT_OS_WINDOWS
|
||
|
|
|
||
|
|
|
||
|
|
#endif // MPT_ENABLE_FILEIO
|
||
|
|
|
||
|
|
|
||
|
|
OPENMPT_NAMESPACE_END
|
||
|
|
|