CTxtImpFileReader Class Reference

#include <CTxtImpFileReader.h>

Inheritance diagram for CTxtImpFileReader:

Public Member Functions
	CTxtImpFileReader (IPMUnknown *boss)
virtual	~CTxtImpFileReader (void)
virtual void	SetStream (IPMStream *stream)
virtual int32	GetFileSizeInBytes (void)
virtual UTF16TextChar	GetNextTextChar (void)=0
Public Member Functions inherited from CPMUnknown< ITxtImpFileReader >
IPMUnknown *	QueryInterface (PMIID interfaceID) const
void	AddRef () const
void	Release () const
void	PreDirty (ImplementationID prop=kInvalidImpl, bool16 allowModification=kTrue)
void	PreDirtyNoMessage (ImplementationID prop=kInvalidImpl, bool16 allowModification=kTrue)
	CPMUnknown (const CPMUnknown &)=delete
CPMUnknown &	operator= (const CPMUnknown &)=delete

Protected Attributes
IPMStream *	fStream
UTF16TextChar *	fTCBuf
uchar *	fCBuf
int32	fLen
int32	fCurrMarker
int32	fEndOfReadMarker
Protected Attributes inherited from CPMUnknown< ITxtImpFileReader >
HelperInterface	fHelperInterface

Additional Inherited Members
Public Types inherited from ITxtImpFileReader
enum	Encoding {   kTxtImpEncodingInvalid = -1, kTxtImpEncodingASCII, kTxtImpEncodingRESERVED, kTxtImpEncodingShiftJIS,   kTxtImpEncodingJIS, kTxtImpEncodingEUCJP, kTxtImpEncodingUTF16BE, kTxtImpEncodingUTF16LE }
enum	{ kDefaultIID = IID_ITXTIMPFILEREADER }
Protected Member Functions inherited from CPMUnknown< ITxtImpFileReader >
	CPMUnknown (IPMUnknown *boss)

Detailed Description

CTxtImpFileReader Provides a partial implementation for a file reader. The only method that is missing is the GetNextTextChar, in which subclasses of CTxtImpFileReader will perform the actual conversions of various encodings to UNICODE, and store it in a local UTF16TextChar buffer.

Constructor & Destructor Documentation

CTxtImpFileReader::CTxtImpFileReader

(

IPMUnknown *

boss

)

Constructor

Parameters

boss	interface ptr from boss object on which this interface is aggregated.

CTxtImpFileReader::~CTxtImpFileReader ( void  )

virtual

Destructor

Member Function Documentation

int32 CTxtImpFileReader::GetFileSizeInBytes ( void  )

virtual

Returns the stream (file) size in bytes.

Implements ITxtImpFileReader.

virtual UTF16TextChar CTxtImpFileReader::GetNextTextChar ( void  )

pure virtual

(pure abstract method) Gets next text char from internal text char buffer. If the buffer has been read until the end or is empty, it reads a chunk out the stream, converts the text to UNICODE, and stores it in the buffer. Subclasses must provide the implementation.

Implements ITxtImpFileReader.

Implemented in ShiftJISFileReader, JISFileReader, ASCIIFileReader, and UNICODEFileReader.

void CTxtImpFileReader::SetStream ( IPMStream *  stream )

virtual

Sets the stream to read.

Parameters

stream

IPMStream to read.

Implements ITxtImpFileReader.

Member Data Documentation

uchar* CTxtImpFileReader::fCBuf

protected

Stores bytes directly read from stream. This is the data before UNICODE conversion

int32 CTxtImpFileReader::fCurrMarker

protected

Stores the current marker position within fTCBuf. Used in GetNextTextChar.

int32 CTxtImpFileReader::fEndOfReadMarker

protected

Stores the position of the last character within fTCBuf. Used in GetNextTextChar.

int32 CTxtImpFileReader::fLen

protected

Stores length of stream.

IPMStream* CTxtImpFileReader::fStream

protected

Stores IPMStream of currently opened stream (indicated by fFilename)

UTF16TextChar* CTxtImpFileReader::fTCBuf

protected

Stores a "chunk" of file text in a UNICODE buffer