mirror of
https://github.com/AppleWin/AppleWin.git
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145 lines
3.4 KiB
C++
145 lines
3.4 KiB
C++
/*
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AppleWin : An Apple //e emulator for Windows
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Copyright (C) 1994-1996, Michael O'Brien
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Copyright (C) 1999-2001, Oliver Schmidt
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Copyright (C) 2002-2005, Tom Charlesworth
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Copyright (C) 2006-2014, Tom Charlesworth, Michael Pohoreski
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AppleWin is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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AppleWin is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with AppleWin; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "StdAfx.h"
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#include "Util_Text.h"
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#include "Util_MemoryTextFile.h"
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// MemoryTextFile _________________________________________________________________________________
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const int EOL_NULL = 0;
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//===========================================================================
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bool MemoryTextFile_t::Read( const std::string & pFileName )
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{
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bool bStatus = false;
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FILE *hFile = fopen( pFileName.c_str(), "rb" );
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if (hFile)
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{
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fseek( hFile, 0, SEEK_END );
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long nSize = ftell( hFile );
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fseek( hFile, 0, SEEK_SET );
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m_vBuffer.reserve( nSize + 1 );
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m_vBuffer.insert( m_vBuffer.begin(), nSize+1, 0 ); // NOTE: Can NOT m_vBuffer.clear(); MUST insert() _before_ using at()
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char *pBuffer = & m_vBuffer.at(0);
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fread( (void*)pBuffer, nSize, 1, hFile );
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fclose(hFile);
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m_bDirty = true;
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GetLinePointers();
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bStatus = true;
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}
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return bStatus;
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}
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//===========================================================================
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void MemoryTextFile_t::GetLine( const int iLine, char *pLine, const int nMaxLineChars )
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{
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if (m_bDirty)
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{
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GetLinePointers();
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}
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ZeroMemory( pLine, nMaxLineChars );
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strncpy( pLine, m_vLines[ iLine ], nMaxLineChars-1 );
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}
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// cr/new lines are converted into null, string terminators
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//===========================================================================
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void MemoryTextFile_t::GetLinePointers()
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{
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if (! m_bDirty)
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return;
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m_vLines.erase( m_vLines.begin(), m_vLines.end() );
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char *pBegin = & m_vBuffer[ 0 ];
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char *pLast = & m_vBuffer[ m_vBuffer.size()-1 ];
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char *pEnd = NULL;
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char *pStartNextLine;
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while (pBegin <= pLast)
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{
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if ( *pBegin ) // Only keep non-empty lines
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m_vLines.push_back( pBegin );
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pEnd = const_cast<char*>( SkipUntilEOL( pBegin ));
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if (*pEnd == EOL_NULL)
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{
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// Found EOL via null
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pStartNextLine = pEnd + 1;
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}
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else
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{
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pStartNextLine = const_cast<char*>( EatEOL( pEnd ));
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// DOS/Win "Text" mode converts LF CR (0D 0A) to CR (0D)
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// but just in case, the file is read in binary.
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int nEOL = pStartNextLine - pEnd;
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while (nEOL-- > 1)
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{
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*pEnd++ = ' ';
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}
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// assert( pEnd != NULL );
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*pEnd = EOL_NULL;
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}
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pBegin = pStartNextLine;
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}
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m_bDirty = false;
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}
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//===========================================================================
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void MemoryTextFile_t::PushLine( char *pLine )
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{
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char *pSrc = pLine;
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while (pSrc && *pSrc)
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{
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if (*pSrc == CHAR_CR)
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m_vBuffer.push_back( EOL_NULL );
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else
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if (*pSrc == CHAR_LF)
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m_vBuffer.push_back( EOL_NULL );
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else
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m_vBuffer.push_back( *pSrc );
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pSrc++;
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}
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m_vBuffer.push_back( EOL_NULL );
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m_bDirty = true;
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}
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