AutoFile Class Reference

Non-refcounted RAII wrapper for FILE*. More...

#include <streams.h>

Public Member Functions
	AutoFile (std::FILE *file, std::vector< std::byte > data_xor={})
	~AutoFile ()
	AutoFile (const AutoFile &)=delete
AutoFile &	operator= (const AutoFile &)=delete
bool	feof () const
int	fclose ()
std::FILE *	release ()
	Get wrapped FILE* with transfer of ownership. More...
bool	IsNull () const
	Return true if the wrapped FILE* is nullptr, false otherwise. More...
void	SetXor (std::vector< std::byte > data_xor)
	Continue with a different XOR key. More...
std::size_t	detail_fread (std::span< std::byte > dst)
	Implementation detail, only used internally. More...
void	seek (int64_t offset, int origin)
	Wrapper around fseek(). More...
int64_t	tell ()
	Find position within the file. More...
bool	Commit ()
	Wrapper around FileCommit(). More...
bool	Truncate (unsigned size)
	Wrapper around TruncateFile(). More...
void	write_buffer (std::span< std::byte > src)
	Write a mutable buffer more efficiently than write(), obfuscating the buffer in-place. More...
void	read (std::span< std::byte > dst)
void	ignore (size_t nSize)
void	write (std::span< const std::byte > src)
template<typename T >
AutoFile &	operator<< (const T &obj)
template<typename T >
AutoFile &	operator>> (T &&obj)

Protected Attributes
std::FILE *	m_file
std::vector< std::byte >	m_xor
std::optional< int64_t >	m_position

Detailed Description

Non-refcounted RAII wrapper for FILE*.

Will automatically close the file when it goes out of scope if not null. If you're returning the file pointer, return file.release(). If you need to close the file early, use file.fclose() instead of fclose(file).

Definition at line 391 of file streams.h.

Constructor & Destructor Documentation

AutoFile() [1/2]

AutoFile::AutoFile ( std::FILE *  file, std::vector< std::byte >  data_xor = {}  )

explicit

Definition at line 12 of file streams.cpp.

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~AutoFile()

AutoFile::~AutoFile ( )

inline

Definition at line 401 of file streams.h.

AutoFile() [2/2]

AutoFile::AutoFile ( const AutoFile &  )

delete

Member Function Documentation

Commit()

bool AutoFile::Commit

(

)

Wrapper around FileCommit().

Definition at line 113 of file streams.cpp.

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detail_fread()

std::size_t AutoFile::detail_fread

(

std::span< std::byte >

dst

)

Implementation detail, only used internally.

Definition at line 21 of file streams.cpp.

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fclose()

int AutoFile::fclose ( )

inline

Definition at line 409 of file streams.h.

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feof()

bool AutoFile::feof ( ) const

inline

Definition at line 407 of file streams.h.

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ignore()

void AutoFile::ignore

(

size_t

nSize

)

Definition at line 67 of file streams.cpp.

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IsNull()

bool AutoFile::IsNull ( ) const

inline

Return true if the wrapped FILE* is nullptr, false otherwise.

Definition at line 428 of file streams.h.

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operator<<()

template<typename T >

AutoFile & AutoFile::operator<< ( const T &  obj )

inline

Definition at line 459 of file streams.h.

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operator=()

AutoFile & AutoFile::operator= ( const AutoFile &  )

delete

operator>>()

template<typename T >

AutoFile & AutoFile::operator>> ( T &&  obj )

inline

Definition at line 466 of file streams.h.

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read()

void AutoFile::read

(

std::span< std::byte >

dst

)

Definition at line 60 of file streams.cpp.

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release()

std::FILE * AutoFile::release ( )

inline

Get wrapped FILE* with transfer of ownership.

Note

This will invalidate the AutoFile object, and makes it the responsibility of the caller of this function to clean up the returned FILE*.

Definition at line 419 of file streams.h.

seek()

void AutoFile::seek	(	int64_t	offset,
		int	origin
	)

Wrapper around fseek().

Will throw if seeking is not possible.

Definition at line 33 of file streams.cpp.

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SetXor()

void AutoFile::SetXor ( std::vector< std::byte >  data_xor )

inline

Continue with a different XOR key.

Definition at line 431 of file streams.h.

tell()

int64_t AutoFile::tell

(

)

Find position within the file.

Will throw if unknown.

Definition at line 54 of file streams.cpp.

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Truncate()

bool AutoFile::Truncate

(

unsigned

size

)

Wrapper around TruncateFile().

Definition at line 118 of file streams.cpp.

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write()

void AutoFile::write

(

std::span< const std::byte >

src

)

Definition at line 81 of file streams.cpp.

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write_buffer()

void AutoFile::write_buffer

(

std::span< std::byte >

src

)

Write a mutable buffer more efficiently than write(), obfuscating the buffer in-place.

Definition at line 100 of file streams.cpp.

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Member Data Documentation

m_file

std::FILE* AutoFile::m_file

protected

Definition at line 394 of file streams.h.

m_position

std::optional<int64_t> AutoFile::m_position

protected

Definition at line 396 of file streams.h.

m_xor

std::vector<std::byte> AutoFile::m_xor

protected

Definition at line 395 of file streams.h.

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The documentation for this class was generated from the following files:

• src/streams.h
• src/streams.cpp