MGIfstream クラス

MGIfstream is a class to read the serialized data generated by MGOfstream. [詳解]

公開メンバ関数
	MGIfstream ()
	Default constructor. [詳解]
	MGIfstream (const TCHAR *file, bool map_clear=true)
	Ordinal constructor, file name file is used to open the file. [詳解]
virtual	~MGIfstream ()
	Destructor. [詳解]
void	operator>> (MGGroup &group)
MGIfstream &	operator>> (MGGel *&gel)
MGIfstream &	operator>> (char &ch)
	基本型のファイル入力関数 [詳解]
MGIfstream &	operator>> (unsigned char &uch)
MGIfstream &	operator>> (short &s)
MGIfstream &	operator>> (unsigned short &us)
MGIfstream &	operator>> (int &n)
MGIfstream &	operator>> (unsigned int &un)
MGIfstream &	operator>> (long &l)
MGIfstream &	operator>> (unsigned long &ul)
MGIfstream &	operator>> (float &f)
MGIfstream &	operator>> (double &d)
void	close ()
void	mapClear ()
	Clear the map area m_map. [詳解]
MGGel *	find (long pid)
bool	insert (long pid, MGGel *ptr)
int	open (const TCHAR *file, bool map_clear=true)
MGGel *	ReadPointer ()
MGIfstream &	readnChar (char *ps4, int n)
	n char版. [詳解]
void	set_map_clear (bool map_clear)
	Set map_clear flag. [詳解]
long	tellg ()
const char *	version () const
	Obtain the version number of the stream. [詳解]
char *	version ()

公開変数類
std::ifstream *	m_file

詳解

MGIfstream is a class to read the serialized data generated by MGOfstream.

All of the MGGel data serialized can be read by : (1) Construct: MGIfstream strm(file_name). (2) Then, MGGroup grp; strm>>grp. (3) The above grp holds all of the serialized data.

構築子と解体子

MGIfstream::MGIfstream

(

)

Default constructor.

MGIfstream::MGIfstream	(	const TCHAR *	file,
		bool	map_clear = true
	)

Ordinal constructor, file name file is used to open the file.

virtual MGIfstream::~MGIfstream ( )

virtual

Destructor.

関数詳解

void MGIfstream::close

(

)

Close the file. This can be used even open() was not used. Users need not use this close() if need not specify the file close before the destruction of the MGIfstream.

MGGel* MGIfstream::find

(

long

pid

)

Find the input pid's map address. If found, MGGel* will be returned. If not found, null pointer(0) will be returned.

bool MGIfstream::insert	(	long	pid,
		MGGel *	ptr
	)

Insert the ptr into the map. Function's return value is: True: if ptr did not exist in the map and insertion succeeded. False: if ptr did exist in the map and insertion failed.

void MGIfstream::mapClear

(

)

Clear the map area m_map.

int MGIfstream::open	(	const TCHAR *	file,
		bool	map_clear = true
	)

fileのオープン. Open the file. This is valid only when default constructor MGOfstream() is used. Function's return value is: =0: open succeeded. =1: file not found, or could not be opened. =2: file found, but, the format is not MGCL format.

void MGIfstream::operator>>

(

MGGroup &

group

)

Read in all the objects in the file. The file should be generated by the following function:

1. MGOfstream::make_file();
2. MGOfstream& operator<< (const MGGel& gel);
3. void operator<<(MGGroup& group);

MGIfstream& MGIfstream::operator>>

(

MGGel *&

gel

)

Read in an object into gel. Returned gel is: (1) null if end of file or illegal file. (2) non null newed object pointer. User must delete it.

MGIfstream& MGIfstream::operator>> ( char &  ch )

inline

基本型のファイル入力関数

MGIfstream& MGIfstream::operator>> ( unsigned char &  uch )

inline

MGIfstream& MGIfstream::operator>> ( short &  s )

inline

MGIfstream& MGIfstream::operator>> ( unsigned short &  us )

inline

MGIfstream& MGIfstream::operator>> ( int &  n )

inline

MGIfstream& MGIfstream::operator>> ( unsigned int &  un )

inline

MGIfstream& MGIfstream::operator>> ( long &  l )

inline

MGIfstream& MGIfstream::operator>> ( unsigned long &  ul )

inline

MGIfstream& MGIfstream::operator>> ( float &  f )

inline

MGIfstream& MGIfstream::operator>> ( double &  d )

inline

MGIfstream& MGIfstream::readnChar	(	char *	ps4,
		int	n
	)

n char版.

MGGel* MGIfstream::ReadPointer

(

)

Pointer base のオブジェクトファイル入力関数. 戻り値はオブジェクトポインタ. Null pointer(0)のときあり。

void MGIfstream::set_map_clear ( bool  map_clear )

inline

Set map_clear flag.

long MGIfstream::tellg

(

)

出力ポインタ位置関数. Tell the current input position of m_file(same as m_file.tellg).

const char* MGIfstream::version ( ) const

inline

Obtain the version number of the stream.

char* MGIfstream::version ( )

inline

メンバ詳解

std::ifstream* MGIfstream::m_file

Target input data stream. m_file is a public member. All of the CFile's member functions can be used.

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このクラス詳解は次のファイルから抽出されました:

• mg/Ifstream.h