ios Class Reference

Error and state information for all streams. More...

#include <ios.h>

Inherits ios_base.

Inherited by StreamBaseClass [virtual], istream [virtual], and ostream [virtual].

Public Member Functions
	ios ()
	operator const void * () const
bool	operator! () const
	operator bool () const
iostate	rdstate () const
bool	good () const
bool	eof () const
bool	fail () const
bool	bad () const
void	clear (iostate state=goodbit)
void	setstate (iostate state)
Public Member Functions inherited from ios_base
	ios_base ()
char	fill ()
char	fill (char c)
fmtflags	flags () const
fmtflags	flags (fmtflags fl)
int	precision () const
int	precision (unsigned int n)
fmtflags	setf (fmtflags fl)
fmtflags	setf (fmtflags fl, fmtflags mask)
void	unsetf (fmtflags fl)
unsigned	width ()
unsigned	width (unsigned n)

Private Attributes
iostate	m_iostate = 0

Additional Inherited Members
Public Types inherited from ios_base
enum	seekdir { beg , cur , end }
typedef unsigned char	iostate
typedef uint32_t	streamsize
typedef uint32_t	pos_type
typedef int32_t	off_type
typedef uint64_t	streamsize
typedef uint64_t	pos_type
typedef int64_t	off_type
typedef unsigned int	fmtflags
typedef uint8_t	openmode
Static Public Attributes inherited from ios_base
static const iostate	goodbit = 0x00
static const iostate	badbit = 0X01
static const iostate	eofbit = 0x02
static const iostate	failbit = 0X04
static const fmtflags	left = 0x0001
static const fmtflags	right = 0x0002
static const fmtflags	internal = 0x0004
static const fmtflags	dec = 0x0008
static const fmtflags	hex = 0x0010
static const fmtflags	oct = 0x0020
static const fmtflags	boolalpha = 0x0100
static const fmtflags	showbase = 0x0200
static const fmtflags	showpoint = 0x0400
static const fmtflags	showpos = 0x0800
static const fmtflags	skipws = 0x1000
static const fmtflags	uppercase = 0x4000
static const fmtflags	adjustfield = left | right | internal
static const fmtflags	basefield = dec | hex | oct
static const openmode	app = 0X4
static const openmode	ate = 0X8
static const openmode	binary = 0X10
static const openmode	in = 0X20
static const openmode	out = 0X40
static const openmode	trunc = 0X80
Protected Member Functions inherited from ios_base
uint8_t	flagsToBase ()

Detailed Description

Error and state information for all streams.

Constructor & Destructor Documentation

ios()

ios::ios ( )

inline

Create ios with no error flags set

Member Function Documentation

bad()

bool ios::bad ( ) const

inline

Returns

true if bad bit is set else false.

clear()

void ios::clear ( iostate  state = goodbit )

inline

Clear iostate bits.

Parameters

[in]

state

The flags you want to set after clearing all flags.

eof()

bool ios::eof ( ) const

inline

Returns

true if end of file has been reached else false.

Warning: An empty file returns false before the first read.

Moral: eof() is only useful in combination with fail(), to find out whether EOF was the cause for failure

fail()

bool ios::fail ( ) const

inline

Returns

true if any iostate bit other than eof are set else false.

good()

bool ios::good ( ) const

inline

Returns

True if no iostate flags are set else false.

operator bool()

ios::operator bool ( ) const

inlineexplicit

Returns

false if fail() else true.

operator const void *()

ios::operator const void * ( ) const

inline

Returns

null pointer if fail() is true.

operator!()

bool ios::operator! ( ) const

inline

Returns

true if fail() else false.

rdstate()

iostate ios::rdstate ( ) const

inline

Returns

The iostate flags for this file.

setstate()

void ios::setstate ( iostate  state )

inline

Set iostate bits.

Parameters

[in]

state

Bitts to set.

Member Data Documentation

m_iostate

iostate ios::m_iostate = 0

private

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

• ios.h