RWWCharInputStream Class Reference

Handle class for all the wide character input stream implementation classes. More...

#include <rw/stream/RWWCharInputStream.h>

Inheritance diagram for RWWCharInputStream:

Public Member Functions
	RWWCharInputStream (RWWCharInputStreamImp *ptr)
	RWWCharInputStream (const RWWCharInputStream &handle)
RWSize	available () const
void	close ()
bool	isBad () const
bool	isEof () const
bool	isFail () const
bool	isGood () const
RWWCharInputStream &	operator= (const RWWCharInputStream &handle)
RWWCharInputStream &	operator>> (RWWCharInputStream &(*pf)(RWWCharInputStream &))
RWWCharInputStream	operator>> (RWWCharInputStream(*pf)(RWWCharInputStream &))
RWWCharInputStream &	operator>> (wchar_t &wcharValue)
wchar_t	read ()
RWSize	read (wchar_t *wcharArray, RWSize numWChars)
RWSize	readUntil (wchar_t *wcharArray, RWSize maxSize, wchar_t delim)
RWSize	skip (RWSize numUnits)
Public Member Functions inherited from RWHandleBase
bool	isValid (void) const
bool	operator!= (const RWHandleBase &second) const
bool	operator< (const RWHandleBase &second) const
bool	operator== (const RWHandleBase &second) const

Related Functions
(Note that these are not member functions.)
RWWCharInputStream &	rwDisc (RWWCharInputStream &stream)
RWWCharInputStream	rwGuard (RWWCharInputStream &stream)

Additional Inherited Members
Protected Member Functions inherited from RWHandleBase
	RWHandleBase (void)
	RWHandleBase (RWStaticCtor)
	RWHandleBase (RWBodyBase *body)
	RWHandleBase (const RWHandleBase &second)
	~RWHandleBase (void)
RWBodyBase &	body (void) const
RWHandleBase &	operator= (const RWHandleBase &second)

Detailed Description

Handle class for all the wide character input stream implementation classes. Implements the handle idiom from the handle-body pattern.

Constructor & Destructor Documentation

RWWCharInputStream::RWWCharInputStream ( RWWCharInputStreamImp *  ptr )

inlineexplicit

Constructor.

RWWCharInputStream::RWWCharInputStream ( const RWWCharInputStream &  handle )

inline

Copy constructor.

Parameters

handle

A wide character stream handle used to initialize the newly created handle.

Member Function Documentation

RWSize RWWCharInputStream::available ( ) const

inline

Returns the number of wide characters that can be read from the stream without blocking. Throws no exceptions.

void RWWCharInputStream::close ( void  )

inline

Closes the stream.

bool RWWCharInputStream::isBad ( ) const

inline

Returns true to indicate a loss of integrity resulting from an input operation, such as an irrecoverable read error from a file. Throws no exceptions.

bool RWWCharInputStream::isEof ( ) const

inline

Returns true to indicate that an input operation reached the end of an input sequence. Throws no exceptions.

bool RWWCharInputStream::isFail ( ) const

inline

Returns true to indicate that an input operation failed to read the expected data. Throws no exceptions.

bool RWWCharInputStream::isGood ( ) const

inline

Returns true to indicate a stream in a valid state. Throws no exceptions.

RWWCharInputStream& RWWCharInputStream::operator= ( const RWWCharInputStream &  handle )

inline

Assignment operator. Throws no exceptions.

Parameters

handle

A wide character stream handle used to initialize this handle.

RWWCharInputStream& RWWCharInputStream::operator>> ( RWWCharInputStream &(*)(RWWCharInputStream &)  pf )

inline

Extractor executing a manipulator function.

Parameters

pf	The manipulator's function pointer.

RWWCharInputStream RWWCharInputStream::operator>> ( RWWCharInputStream(*)(RWWCharInputStream &)  pf )

inline

Extractor executing a manipulator function.

Parameters

pf	The manipulator's function pointer.

RWWCharInputStream& RWWCharInputStream::operator>> ( wchar_t &  wcharValue )

inline

Reads a single wide character from the stream.

Parameters

wcharValue

The wide character to be read from the stream.

wchar_t RWWCharInputStream::read ( void  )

inline

Reads a single wide character from the stream.

RWSize RWWCharInputStream::read ( wchar_t *  wcharArray, RWSize  numWChars  )

inline

Reads an array of wide characters from the stream. The array must be pre-allocated to contain at least numWChars elements. The function returns the actual number of wide characters extracted from the stream.

Parameters

wcharArray	A pointer to the first element of the array.
numWChars	The number of wide characters to be read from the stream.

RWSize RWWCharInputStream::readUntil ( wchar_t *  wcharArray, RWSize  maxSize, wchar_t  delim  )

inline

Reads wide characters from the stream until the last wide character read is equal to delim, or maxSize wide characters have been read, or the end of the input sequence is reached. The wide characters read are stored in wcharArray. The function returns the actual number of wide characters read from the stream.

Parameters

wcharArray	A pointer to the array receiving the wide characters extracted from the stream.
maxSize	The maximum number of wide characters to be read.
delim	The wide character used as a delimiter.

RWSize RWWCharInputStream::skip ( RWSize  numUnits )

inline

Skips numUnits wide characters from the input sequence if possible. The function returns the actual number of wide characters skipped, which can be any value between 0 and numUnits.

Parameters

numUnits

The number of wide characters to be skipped.

Friends And Related Function Documentation

RWWCharInputStream & rwDisc ( RWWCharInputStream &  stream )

related

Manipulator that discards a narrow character from a stream input sequence.

Parameters

stream

The wide character stream.

RWWCharInputStream rwGuard ( RWWCharInputStream &  stream )

related

Header File

#include <rw/stream/RWGuardedWCharInputStreamImp.h>

Manipulator that is used to guard a series of extraction operations.

Parameters

stream

A wide character input stream.

A rwGuard() manipulator creates a temporary guarded stream that locks the internal mutex of the preceding synchronized stream. In this way, any extractions following the manipulator within the statement will be atomic, that is, uninterrupted by any other threads. Note that if the preceding stream is not a synchronized stream, the rwGuard() manipulator has no effect.

// Lock the stream for the duration of all three insertions:
instr >> rwGuard >> data1 >> data2 >> data3;