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GETDecoder: Ignore File_Header, LoadMetaData() return number of entries. #3

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GETDecoder: Ignore File_Header, LoadMetaData() return number of entries. #3

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56 changes: 54 additions & 2 deletions source/GETCore/GETDecoder.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -118,6 +118,7 @@ void GETDecoder::Initialize()
if ( fMutantFrame == NULL) fMutantFrame = new GETMutantFrame();
else fMutantFrame -> Clear();

fInitialPosition = 0;
fPrevDataID = 0;
fPrevPosition = 0;
}
Expand All @@ -131,6 +132,7 @@ void GETDecoder::Clear() {

fDataSize = 0;
fCurrentDataID = -1;
fInitialPosition = 0;

fFrameInfoIdx = 0;
fCoboFrameInfoIdx = 0;
Expand Down Expand Up @@ -226,6 +228,54 @@ Bool_t GETDecoder::SetData(Int_t index)
std::cout << "== [GETDecoder] " << filename << " is opened!" << std::endl;

fData.seekg(0);

std::string startOfFileHeader = "<File_Header><";
std::string endofFileHeader = "</File_Header>";
UInt_t sizeOfString = endofFileHeader.size();

std::string lastString = endofFileHeader;
for (UInt_t iChar = 0; iChar < sizeOfString; ++iChar)
lastString[iChar] = ' ';

Bool_t isExistFileHeader = kFALSE;
Char_t buffer;

for (UInt_t iRead = 0; iRead < 100; ++iRead) {
fData.read(&buffer, sizeof(Char_t));

for (UInt_t iChar = 1; iChar < sizeOfString; ++iChar)
lastString[iChar-1] = lastString[iChar];
lastString[sizeOfString-1] = buffer;

if (lastString == startOfFileHeader) {
isExistFileHeader = kTRUE;
break;
}
}

if (!isExistFileHeader)
fInitialPosition = 0;
else {
std::cout << "== [GETDecoder] File Header do exist!" << std::endl;
for (UInt_t iRead = 0; iRead < 10000; ++iRead) {
fData.read(&buffer, sizeof(Char_t));

for (UInt_t iChar = 1; iChar < sizeOfString; ++iChar)
lastString[iChar-1] = lastString[iChar];
lastString[sizeOfString-1] = buffer;

if (lastString == endofFileHeader) {
fInitialPosition = fData.tellg();
break;
}
}
if (fInitialPosition == 0) {
std::cout << "== [GETDecoder] Cannot find end of File Header!" << std::endl;
return kFALSE;
}
}

fData.seekg(fInitialPosition);

if (!fIsDataInfo) {
fHeaderBase -> Read(fData, kTRUE);
Expand Down Expand Up @@ -667,7 +717,7 @@ Bool_t GETDecoder::SetWriteFile(TString filename, Bool_t overwrite)
SetData(0);

std::ofstream outFile(fWriteFile.Data(), std::ios::ate|std::ios::binary|std::ios::app);
fData.seekg(0);
fData.seekg(fInitialPosition);
fData.read(fBuffer, fTopologyFrame -> GetFrameSize());
outFile.write(fBuffer, fTopologyFrame -> GetFrameSize());
outFile.close();
Expand Down Expand Up @@ -834,7 +884,7 @@ void GETDecoder::SaveMetaData(Int_t runNo, TString filename, Int_t coboIdx) {
}
}

void GETDecoder::LoadMetaData(TString filename) {
UInt_t GETDecoder::LoadMetaData(TString filename) {
TFile *metaFile = new TFile(filename);

UInt_t dataID = 0, eventID = 0, deltaT = 0;
Expand Down Expand Up @@ -897,4 +947,6 @@ void GETDecoder::LoadMetaData(TString filename) {

fIsDoneAnalyzing = kTRUE;
fIsMetaData = kTRUE;

return numEntries;
}
6 changes: 4 additions & 2 deletions source/GETCore/GETDecoder.hh
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Original file line number Diff line number Diff line change
Expand Up @@ -95,8 +95,8 @@ class GETDecoder
void GoToEnd();
//! Write metadata into ROOT file
void SaveMetaData(Int_t runNo = -1, TString filename = "", Int_t coboIdx = -1);
//! Load metadata from ROOT file
void LoadMetaData(TString filename);
//! Load metadata from ROOT file. Return number of entries
UInt_t LoadMetaData(TString filename);

//! Set topology frame information manually
void SetPseudoTopologyFrame(Int_t asadMask, Bool_t check = kFALSE);
Expand Down Expand Up @@ -154,6 +154,8 @@ class GETDecoder
Int_t fPrevDataID; ///< Data ID for going back to original data
ULong64_t fPrevPosition; ///< Byte number for going back to original data

ULong64_t fInitialPosition; ///< Initial file position just after end of File Header

ClassDef(GETDecoder, 1); /// added for making dictionary by ROOT
};

Expand Down