Implements a buffer that can be used with narrow character input streams. More...

#include <rw/stream/RWBufferedCharInputStreamImp.h>

Inheritance diagram for RWBufferedCharInputStreamImp:

Public Member Functions
virtual void	readStringUntil (RWCString &string, char delim)

Public Member Functions inherited from RWTInputStreamBufferImp< RWCharInputStream, RWFilteredCharInputStreamImp >
virtual	~RWTInputStreamBufferImp ()

virtual RWSize	available () const

virtual bool	isBad () const

virtual bool	isEof () const

virtual bool	isFail () const

virtual bool	isGood () const

virtual element_type	read ()

virtual RWSize	read (element_type *array, RWSize num)

virtual RWSize	readUntil (element_type *array, RWSize maxSize, element_type delim)

virtual RWSize	skip (RWSize numUnits)

Public Member Functions inherited from RWFilteredCharInputStreamImp
virtual	~RWFilteredCharInputStreamImp ()

virtual void	close ()

virtual RWSize	read (char *charArray, RWSize numChars)

virtual RWSize	readUntil (char *charArray, RWSize maxSize, char delim)

Public Member Functions inherited from RWCharInputStreamImp
virtual	~RWCharInputStreamImp ()

virtual RWCharInputStream	acquire ()

virtual void	release ()

Public Member Functions inherited from RWInputStreamImp
virtual	~RWInputStreamImp ()

Public Member Functions inherited from RWStreamImp
virtual	~RWStreamImp ()

Static Public Member Functions
static RWCharInputStream	make (const RWCharInputStream &sourceStream)

static RWCharInputStream	make (const RWCharInputStream &sourceStream, RWSize bufSize)

static RWCharInputStream	make (const RWCharInputStream &sourceStream, char *buffer, RWSize bufSize)

Static Public Member Functions inherited from RWTInputStreamBufferImp< RWCharInputStream, RWFilteredCharInputStreamImp >
static RWCharInputStream	make (const RWCharInputStream &sourceStream)

static RWCharInputStream	make (const RWCharInputStream &sourceStream, RWSize bufSize)

static RWCharInputStream	make (const RWCharInputStream &sourceStream, element_type *buffer, RWSize bufSize)

Protected Member Functions
	RWBufferedCharInputStreamImp (const RWCharInputStream &sourceStream)

	RWBufferedCharInputStreamImp (const RWCharInputStream &sourceStream, RWSize bufSize)

	RWBufferedCharInputStreamImp (const RWCharInputStream &sourceStream, char *buffer, RWSize bufSize)

Protected Member Functions inherited from RWTInputStreamBufferImp< RWCharInputStream, RWFilteredCharInputStreamImp >
	RWTInputStreamBufferImp (const RWCharInputStream &sourceStream)

	RWTInputStreamBufferImp (const RWCharInputStream &sourceStream, RWSize bufSize)

	RWTInputStreamBufferImp (const RWCharInputStream &sourceStream, element_type *buffer, RWSize bufSize)

element_type *	eback () const

element_type *	ebuf () const

element_type *	egptr () const

void	freeBuffer ()

void	gbump (RWSize n)

element_type *	gptr () const

void	setBufferEnd (element_type *gend_arg)

void	setg (element_type gbeg_arg, element_type gcur_arg, element_type *gend_arg)

bool	underflow ()

Protected Member Functions inherited from RWFilteredCharInputStreamImp
	RWFilteredCharInputStreamImp (const RWCharInputStream &sourceStream)

RWCharInputStream &	getSourceStream ()

const RWCharInputStream &	getSourceStream () const

Protected Member Functions inherited from RWCharInputStreamImp
	RWCharInputStreamImp ()

Protected Member Functions inherited from RWInputStreamImp
	RWInputStreamImp ()

Protected Member Functions inherited from RWStreamImp
	RWStreamImp ()

Protected Member Functions inherited from RWBodyBase
	RWBodyBase (void)

	RWBodyBase (RWStaticCtor)

	RWBodyBase (const RWBodyBase &second)

virtual	~RWBodyBase (void)

RWBodyBase &	operator= (const RWBodyBase &second)

Protected Member Functions inherited from RWTCountingBody< RWMutexLock >
	RWTCountingBody (unsigned initCount=0)

	RWTCountingBody (RWStaticCtor)

	RWTCountingBody (const RWTCountingBody< RWMutexLock > &second)

RWTCountingBody< RWMutexLock > &	operator= (const RWTCountingBody< RWMutexLock > &second)

	~RWTCountingBody (void)

unsigned	addReference (void)

unsigned	references (void) const

unsigned	removeReference (void)

Protected Member Functions inherited from RWTMonitor< RWMutexLock >
	RWTMonitor ()

	RWTMonitor (RWStaticCtor)

	RWTMonitor (const RWTMonitor< RWMutexLock > &second)

	~RWTMonitor ()

void	acquire ()

bool	isAcquired () const

RWTMonitor< RWMutexLock > &	monitor () const

RWMutexLock &	mutex ()

RWTMonitor< RWMutexLock > &	operator= (const RWTMonitor< RWMutexLock > &)

void	release ()

bool	tryAcquire ()

Additional Inherited Members
Public Types inherited from RWTInputStreamBufferImp< RWCharInputStream, RWFilteredCharInputStreamImp >
typedef RWCharInputStream::element_type	element_type

typedef RWCharInputStream	RWInputStream_type

Protected Types inherited from RWTCountingBody< RWMutexLock >
typedef RWTLockGuard< RWTMonitor< RWMutexLock > >	LockGuard

typedef RWTTryLockGuard< RWTMonitor< RWMutexLock > >	TryLockGuard

typedef RWTUnlockGuard< RWTMonitor< RWMutexLock > >	UnlockGuard

Protected Types inherited from RWTMonitor< RWMutexLock >
typedef RWTLockGuard< RWTMonitor< RWMutexLock > >	LockGuard

typedef RWTTryLockGuard< RWTMonitor< RWMutexLock > >	TryLockGuard

typedef RWTUnlockGuard< RWTMonitor< RWMutexLock > >	UnlockGuard

Detailed Description

Class RWBufferedCharInputStreamImp implements a buffer that can be used with narrow character input streams. The size of the buffer is specified in its static member make() function, which is used to create it.

Example: // This is an input buffer used for narrow character streams.

#include <rw/stream/RWBufferedCharInputStreamImp.h>

#include <rw/stream/RWCharFromStreambufInputStreamImp.h>

#include <rw/stream/RWStreambufFromCharInputStream.h>

#include <fstream.h>

#include <iostream.h>

#include <rw/rwfile.h>

int main() {

filebuf fbuf;

if(!RWFile::Exists("RWBufferedCharOutputStreamImp.out")) {

cout << "The input file does not exist."<< endl;

}

else {

fbuf.open("RWBufferedCharOutputStreamImp.out",

ios::in);

RWCharInputStream charStream =

RWCharFromStreambufInputStreamImp::make(fbuf);

RWCharInputStream bufferedStream =

RWBufferedCharInputStreamImp::make(charStream, 128);

RWStreambufFromCharInputStream adaptor(bufferedStream);

istream in(&adaptor);

int i;

in >> i;

cout << i << endl;

}

return 0;

}

Constructor & Destructor Documentation

RWBufferedCharInputStreamImp::RWBufferedCharInputStreamImp ( const RWCharInputStream & sourceStream )

protected

Initializes the reference to the input stream that will be used as the source of narrow characters, as well as the internal buffer capacity, which will be equal to RW_STREAM_BUFFER_SIZE.

Exceptions

RWExternalStreamException Thrown if an illegal buffer size was requested or if the memory allocation request for the buffer fails.

Parameters

sourceStream Input stream that will serve as the source of narrow characters.

RWBufferedCharInputStreamImp::RWBufferedCharInputStreamImp	(	const RWCharInputStream &	sourceStream,
		RWSize	bufSize
	)

protected

Initializes the reference to the input stream that will be used as the source of narrow characters, as well as the buffer capacity.

Exceptions

RWExternalStreamException Thrown if an illegal buffer size was requested or if the memory allocation request for the buffer fails.

Parameters

sourceStream	Input stream that will serve as the source of narrow characters.
bufSize	Buffer capacity in number of narrow characters.

RWBufferedCharInputStreamImp::RWBufferedCharInputStreamImp	(	const RWCharInputStream &	sourceStream,
		char *	buffer,
		RWSize	bufSize
	)

protected

Initializes the reference to the input stream that will be used as the source of narrow characters, as well as the internal buffer.

Exceptions

RWExternalStreamException Thrown if an illegal buffer size was requested or if the memory allocation request for the buffer fails.

Parameters

sourceStream	Input stream that will serve as the source of narrow characters.
buffer	Pre-allocated buffer of size bufSize to be used internally by the constructed RWBufferedCharInputStreamImp object.
bufSize	Buffer capacity in number of narrow characters.

Member Function Documentation

static RWCharInputStream RWBufferedCharInputStreamImp::make ( const RWCharInputStream & sourceStream )

inlinestatic

Constructs a RWBufferedCharInputStreamImp instance that uses sourceStream as its source of narrow characters, and returns a handle to it. The internal buffer is dynamically allocated to be of size RW_STREAM_BUFFER_SIZE.

Exceptions

RWExternalStreamException Thrown if an illegal buffer size was requested or if the memory allocation request for the buffer fails.

Parameters

sourceStream Input stream that will serve as the source of narrow characters.

static RWCharInputStream RWBufferedCharInputStreamImp::make	(	const RWCharInputStream &	sourceStream,
		RWSize	bufSize
	)

inlinestatic

Constructs a RWBufferedCharInputStreamImp instance that uses sourceStream as its source of narrow characters, and returns a handle to it. The internal buffer is dynamically allocated to be of size bufSize.

Exceptions

RWExternalStreamException Thrown if an illegal buffer size was requested or if the memory allocation request for the buffer fails.

Parameters

sourceStream	The input stream that will serve as the source of narrow characters.
bufSize	The buffer capacity in number of narrow characters.

static RWCharInputStream RWBufferedCharInputStreamImp::make	(	const RWCharInputStream &	sourceStream,
		char *	buffer,
		RWSize	bufSize
	)

inlinestatic

Constructs an RWBufferedCharInputStreamImp instance that uses sourceStream as its source of narrow characters, and returns a handle to it. The internal buffer is initialized using the pre-allocated narrow character's array of size bufSize.

Exceptions

RWExternalStreamException Thrown if an illegal buffer size was requested or if the memory allocation request for the buffer fails.

Parameters

sourceStream	The input stream that will serve as the source of narrow characters.
buffer	A pre-allocated buffer of size bufSize to be used internally by the constructed RWBufferedCharInputStreamImp object.
bufSize	The buffer capacity in number of narrow characters.

virtual void RWBufferedCharInputStreamImp::readStringUntil	(	RWCString &	string,
		char	delim
	)

virtual

Reads narrow character(s) from the attached source stream until the last character read is equal to delim, or the end of the input sequence is reached. The narrow character(s) read are stored in a narrow string object.

Parameters

string	A string object receiving the narrow character(s) extracted from the stream.
delim	The narrow character used as a delimiter.

Reimplemented from RWFilteredCharInputStreamImp.

SourcePro® API Reference Guide

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation