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#include "stdafx.h"
#include "TraceReader.h"
using namespace Tracing;
const sTraceItem& TraceReader::operator[]( size_t idx ) const
{
if( idx >= countItems )
throw E_BOUNDS;
return items[ idx ];
}
CStringA TraceReader::getName( const sTraceItem& item ) const
{
const size_t idx = item.stringIndex;
if( idx >= countStrings )
throw E_BOUNDS;
const char* const source = stringData + stringIndex[ idx ];
CStringA res;
res.Format( source, item.formatArgs[ 0 ], item.formatArgs[ 1 ], item.formatArgs[ 2 ], item.formatArgs[ 3 ] );
return res;
}
HRESULT TraceReader::open( LPCTSTR path )
{
CHECK( file.Create( path, GENERIC_READ, FILE_SHARE_READ, OPEN_EXISTING ) );
CHECK( mapping.MapFile( file ) );
const uint8_t* rsi = mapping;
const sFileHeader& header = *(const sFileHeader*)rsi;
if( header.magic != header.correctMagic )
return E_INVALIDARG;
countItems = header.countItems;
countStrings = header.countStrings;
rsi += sizeof( sFileHeader );
payloadPointer = rsi;
rsi += header.bytesPayload;
stringIndex = (const uint32_t*)( rsi );
stringData = (const char*)( rsi + countStrings * 4 );
rsi += header.bytesStrings;
items = (const sTraceItem*)rsi;
return S_OK;
}
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