RWUCharInputStream Class Reference

Handle class for all the UTF-16 character input stream implementation classes. More...

#include <rw/stream/RWUCharInputStream.h>

Inheritance diagram for RWUCharInputStream:

Public Member Functions
	RWUCharInputStream (RWUCharInputStreamImp *body)
	RWUCharInputStream (const RWUCharInputStream &handle)
RWSize	available () const
void	close ()
bool	isBad () const
bool	isEof () const
bool	isFail () const
bool	isGood () const
RWUCharInputStream &	operator= (const RWUCharInputStream &handle)
RWUCharInputStream &	operator>> (RWUCharInputStream &(*pf)(RWUCharInputStream &))
RWUCharInputStream	operator>> (RWUCharInputStream(*pf)(RWUCharInputStream &))
RWUCharInputStream &	operator>> (RWUChar &unicodeValue)
RWUChar	read ()
RWSize	read (RWUChar *unicodeArray, RWSize numUChars)
RWSize	readUntil (RWUChar *unicodeArray, RWSize maxSize, RWUChar 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.)
RWUCharInputStream &	rwDisc (RWUCharInputStream &stream)
RWUCharInputStream	rwGuard (RWUCharInputStream &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 UTF-16 character input stream implementation classes. Implements the handle idiom from the handle-body pattern.

Constructor & Destructor Documentation

RWUCharInputStream::RWUCharInputStream ( RWUCharInputStreamImp *  body )

inlineexplicit

Constructor.

RWUCharInputStream::RWUCharInputStream ( const RWUCharInputStream &  handle )

inline

Copy constructor.

Parameters

handle

A UTF-16 character stream handle used to initialize the newly created handle.

Member Function Documentation

RWSize RWUCharInputStream::available ( ) const

inline

Returns the number of UTF-16 characters that can be read from the stream without blocking. Throws no exceptions.

void RWUCharInputStream::close ( void  )

inline

Close the stream.

bool RWUCharInputStream::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 RWUCharInputStream::isEof ( ) const

inline

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

bool RWUCharInputStream::isFail ( ) const

inline

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

bool RWUCharInputStream::isGood ( ) const

inline

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

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

inline

Assignment operator. Throws no exceptions.

Parameters

handle

A UTF-16 character stream handle used to initialize this handle.

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

inline

Extractor executing a manipulator function.

Parameters

pf	The manipulator's function pointer.

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

inline

Extractor executing a manipulator function.

Parameters

pf	The manipulator's function pointer.

RWUCharInputStream& RWUCharInputStream::operator>> ( RWUChar &  unicodeValue )

inline

Reads a single UTF-16 character from the stream.

Parameters

unicodeValue

The UTF-16 character to be read from the stream.

RWUChar RWUCharInputStream::read ( void  )

inline

Reads a single UTF-16 character from the stream.

RWSize RWUCharInputStream::read ( RWUChar *  unicodeArray, RWSize  numUChars  )

inline

Reads an array of UTF-16 characters from the stream. The array must be pre-allocated to contain at least numUChars elements. The function returns the actual number of UTF-16 characters extracted from the stream.

Parameters

unicodeArray	A pointer to the first element of the array.
numUChars	The number of UTF-16 characters to be read from the stream.

RWSize RWUCharInputStream::readUntil ( RWUChar *  unicodeArray, RWSize  maxSize, RWUChar  delim  )

inline

Reads UTF-16 characters from the stream until the last UTF-16 character read is equal to delim, or maxSize UTF-16 characters have been read, or the end of the input sequence is reached. The UTF-16 characters read are stored in unicodeArray. The function returns the actual number of UTF-16 characters read from the stream.

Parameters

unicodeArray	A pointer to the array receiving the UTF-16 characters extracted from the stream.
maxSize	The maximum number of UTF-16 characters to be read.
delim	The UTF-16 character used as a delimiter.

RWSize RWUCharInputStream::skip ( RWSize  numUnits )

inline

Skips numUnits UTF-16 characters from the input sequence if possible. The function returns the actual number of UTF-16 characters skipped, which can be any value between 0 and numUnits.

Parameters

numUnits

The number of UTF-16 characters to be skipped.

Friends And Related Function Documentation

RWUCharInputStream & rwDisc ( RWUCharInputStream &  stream )

related

Manipulator that discards a UTF-16 character from a stream input sequence.

Parameters

stream

The UTF-16 character stream.

RWUCharInputStream rwGuard ( RWUCharInputStream &  stream )

related

Header File

#include <rw/stream/RWGuardedUCharInputStreamImp.h>

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

Parameters

stream

A UTF-16 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.

Example

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