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#include<vector>
#include "TROOT.h"
#include "TFile.h"
#include "TFileMerger.h"
#include "TDirectory.h"
#include "TChain.h"
#include "TObject.h"
#include "TCanvas.h"
#include "TMath.h"
#include "TLegend.h"
#include "TGraph.h"
#include "TH1.h"
#include "TH2.h"
#include "TH3.h"
#include "TTree.h"
#include "TF1.h"
#include "TPaveText.h"
TObject* GetObjectFromPath(TDirectory* File, const char* Path);
void merge_core(TDirectory* Output, TDirectory* Input);
void merge(char* InputFilePath,char* OutputFilePath)
{
gROOT->Reset();
char outname[2048];
char name[2048];
unsigned int PackN = 1;
unsigned int PackSize = 120;
for(unsigned int P=0;P<PackN;P++){
TFileMerger merger(kFALSE);
if(PackN>1){
sprintf(outname,"tmp_%s_%i.root",OutputFilePath,P);
}else{
sprintf(outname,"%s",OutputFilePath);
}
merger.OutputFile(outname);
merger.PrintFiles("true");
merger.SetFastMethod();
for(unsigned int i=0;i<PackSize;i++){
sprintf(name,InputFilePath,P*PackSize+i);
merger.AddFile(name);
}
merger.Merge();
}
if(PackN>1){
TFileMerger merger(kFALSE);
merger.OutputFile(OutputFilePath);
merger.PrintFiles("true");
merger.SetFastMethod();
for(unsigned int P=0;P<PackN;P++){
sprintf(outname,"tmp_%s_%i.root",OutputFilePath,P);
merger.AddFile(outname);
}
merger.Merge();
for(unsigned int P=0;P<PackN;P++){
sprintf(outname,"tmp_%s_%i.root",OutputFilePath,P);
remove(outname);
}
}
}
/*
TFile* Output = new TFile("out.root","RECREATE");
TFile* Input;
for(unsigned int i=0;i<100;i++){
char name[1024];
sprintf(name,"file:SingleMu_Discrim_%04i.root",i);
printf("Oppening %s\n",name);
Input = new TFile(name);
if(Input==NULL || Input->IsZombie() ){printf("### Bug With File %s\n### File will be skipped \n",name); continue;}
merge_core(Output, Input );
Input->Close();
delete Input;
}
Output->Write();
} Output->Close();
*/
void merge_core(TDirectory* Output, TDirectory* Input)
{
TH1::AddDirectory(kTRUE);
if(Input==NULL) return;
TList* input_list = Input->GetListOfKeys();
if(input_list==NULL){cout <<"LIST IS NULL\n";return;}
TObject* input_it = input_list->First();
while(input_it!=NULL){
if(input_it->IsFolder()){
// printf("Enter in %s\n",input_it->GetName());
TDirectory* in_dir_tmp = (TDirectory*)Input ->Get(input_it->GetName());
TDirectory* out_dir_tmp = (TDirectory*)Output->Get(input_it->GetName());
if(out_dir_tmp==NULL){
// printf("Directory do not exist\n");
out_dir_tmp = Output->mkdir(input_it->GetName());
}
merge_core(out_dir_tmp, in_dir_tmp);
}else{
TH1* in_hist_tmp = (TH1*)Input ->Get(input_it->GetName());
TH1* out_hist_tmp = (TH1*)Output->Get(input_it->GetName());
if(out_hist_tmp==NULL){
// printf("Creation of a new TH1*\n");
Output->cd();
out_hist_tmp = (TH1*)in_hist_tmp->Clone();
}else{
// printf("Summing Histograms\n");
out_hist_tmp->Add(in_hist_tmp,1);
}
}
input_it = input_list->After(input_it);
}
}
TObject* GetObjectFromPath(TDirectory* File, const char* Path)
{
string str(Path);
size_t pos = str.find("/");
if(pos < 256){
string firstPart = str.substr(0,pos);
string endPart = str.substr(pos+1,str.length());
TDirectory* TMP = (TDirectory*)File->Get(firstPart.c_str());
if(TMP!=NULL)return GetObjectFromPath(TMP,endPart.c_str());
printf("BUG\n");
return NULL;
}else{
return File->Get(Path);
}
}
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