mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
75 lines
2.0 KiB
75 lines
2.0 KiB
//+---------------------------------------------------------------------------
|
|
//
|
|
// Copyright (C) 1992 - 1994, Microsoft Corporation.
|
|
//
|
|
// File: fstrm.cxx
|
|
//
|
|
// Contents: Stream for transporting text from IFilter to cxx parser.
|
|
//
|
|
// Classes: CFilterTextStream
|
|
//
|
|
// History: 01-Aug-93 AmyA Created
|
|
// 17-Oct-94 BartoszM Rewrote
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
#include <pch.cxx>
|
|
#pragma hdrstop
|
|
|
|
//+-------------------------------------------------------------------------
|
|
//
|
|
// Member: CFilterTextStream::CFilterTextStream, public
|
|
//
|
|
// Synopsis: Constructor
|
|
//
|
|
// History: 01-Aug-93 AmyA Created
|
|
// 17-Oct-94 BartoszM Rewrote
|
|
//
|
|
//--------------------------------------------------------------------------
|
|
|
|
CFilterTextStream::CFilterTextStream(IFilter* pIFilter)
|
|
: CTextSource(_statChunk)
|
|
{
|
|
iEnd = 0;
|
|
iCur = 0;
|
|
Win4Assert (pIFilter != 0);
|
|
awcBuffer = _awcFilterBuffer;
|
|
_sc = pIFilter->GetChunk( &_statChunk );
|
|
if (SUCCEEDED(_sc))
|
|
{
|
|
_pFilter = pIFilter;
|
|
pfnFillTextBuffer = CTextSource::FillBuf;
|
|
_mapper.NewChunk ( _statChunk.idChunk, 0 );
|
|
_pMapper = &_mapper;
|
|
_sc = CTextSource::FillBuf( this );
|
|
}
|
|
}
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CFilterTextStream::GetMore, public
|
|
//
|
|
// Synopsis: Try to replenish the buffer
|
|
//
|
|
// History: 16-Nov-94 BartoszM Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
int CFilterTextStream::GetMore()
|
|
{
|
|
if (iCur == iEnd - 1)
|
|
{
|
|
_sc = FillBuf( this );
|
|
// if there was no more data
|
|
// the last lookahead was moved
|
|
// to the beginning and
|
|
// iCur == iEnd - 1
|
|
// next time around it will be
|
|
// iCur == iEnd
|
|
}
|
|
else
|
|
{
|
|
Win4Assert(iCur == iEnd);
|
|
return -1; // EOF
|
|
}
|
|
return awcBuffer[iCur++];
|
|
}
|