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#include "TList.h"
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#include "TIterator.h"
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#include "TRegexp.h"
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#include "TFile.h"
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#include "TObject.h"
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#include "TKey.h"
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#include "TH1.h"
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#include "TStyle.h"
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#include "TClass.h"
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#include <iostream>
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#include "histio.h"
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void saveHist(const char* filename, const char* pat) {
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TList* list = gDirectory->GetList();
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TIterator* iter = list->MakeIterator();
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TRegexp re(pat, kTRUE);
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TFile outf(filename, "RECREATE");
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TObject* obj;
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while (obj = iter->Next()) {
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if (TString(obj->GetName()).Index(re) >= 0) {
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obj->Write() ;
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std::cout << "." ;
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std::cout.flush() ;
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}
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}
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std::cout << std::endl ;
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outf.Close() ;
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delete iter ;
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}
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void loadHist(const char* filename, const char* pfx, const char* pat, Bool_t doAdd) {
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TFile inf(filename);
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TList* list = inf.GetListOfKeys();
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TIterator* iter = list->MakeIterator();
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TRegexp re(pat, kTRUE);
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std::cout << "pat = " << pat << std::endl;
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gDirectory->cd("Rint:");
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TObject* obj;
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TKey* key;
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std::cout << "doAdd = " << (doAdd ? "T" : "F") << std::endl;
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std::cout << "loadHist: reading.";
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while (key = (TKey*)iter->Next()) {
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Int_t ridx = TString(key->GetName()).Index(re);
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if (ridx == -1)
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continue;
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obj = inf.Get(key->GetName());
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TObject* clone;
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if (pfx) {
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// Find existing TH1-derived objects
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TObject* oldObj = 0 ;
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if (doAdd) {
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oldObj = gDirectory->Get(Form("%s_%s", pfx, obj->GetName()));
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if (oldObj && !oldObj->IsA()->InheritsFrom(TH1::Class()))
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oldObj = 0;
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}
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if (oldObj) {
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clone = oldObj;
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((TH1*)clone)->Add((TH1*)obj);
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} else
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clone = obj->Clone(Form("%s_%s", pfx, obj->GetName()));
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} else {
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// Find existing TH1-derived objects
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TObject* oldObj = 0;
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if (doAdd) {
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oldObj = gDirectory->Get(key->GetName());
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if (oldObj && !oldObj->IsA()->InheritsFrom(TH1::Class()))
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oldObj = 0;
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}
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if (oldObj) {
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clone = oldObj;
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((TH1*)clone)->Add((TH1*)obj);
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} else
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clone = obj->Clone();
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}
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if (!gDirectory->GetList()->FindObject(clone))
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gDirectory->Append(clone);
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std::cout << ".";
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std::cout.flush();
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}
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std::cout << std::endl;
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inf.Close();
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delete iter;
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}
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