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122 lines
2.4 KiB
C++
122 lines
2.4 KiB
C++
#include "StdAfx.h"
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#pragma hdrstop
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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( char *pFileName )
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{
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bool bStatus = false;
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FILE *hFile = fopen( pFileName, "rt" );
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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 );
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char *pBuffer = & m_vBuffer.at(0);
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fread( (void*)pBuffer, nSize, 1, hFile );
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m_vBuffer.push_back( EOL_NULL );
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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.at( 0 );
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char *pLast = & m_vBuffer[ m_vBuffer.size() ];
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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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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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