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#!/bin/bash
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src1=$1
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src2=$2
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dest=$3
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if [ -z "$src1" -o -z "$src2" -o -z "$dest" ]; then
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echo "Usage: mergeroot src1 src2 dest"
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exit
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fi
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which root > /dev/null 2>&1 || exit
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echo '
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TString indent;
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void clonedir(TDirectory const* src, TDirectory* dest)
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{
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std::cout << indent << src->GetName() << " (clone)" << std::endl;
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TList* objs = src->GetListOfKeys();
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TKey* key;
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TObject* obj = 0;
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TListIter* itr = (TListIter*)objs->MakeIterator();
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while((key = (TKey*)(itr->Next()))){
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obj = key->ReadObj();
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if(obj->InheritsFrom("TDirectory")){
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indent += " ";
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TDirectory* dir = dest->mkdir(obj->GetName());
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clonedir((TDirectory*)(obj), dir);
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}
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else if(obj->InheritsFrom("TNamed")){
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dest->cd();
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obj->Clone();
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}
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}
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indent = indent(0, indent.Length() - 2);
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}
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void mergedir(TDirectory const* src1, TDirectory const* src2, TDirectory* dest)
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{
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std::cout << indent << src1->GetName() << " (merge)" << std::endl;
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TList* objs1 = src1->GetListOfKeys();
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TList* objs2 = src2->GetListOfKeys();
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TList objs;
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TListIter* itr1 = (TListIter*)objs1->MakeIterator();
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TListIter* itr2 = (TListIter*)objs2->MakeIterator();
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TObject* obj;
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while((obj = itr1->Next())){
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if(!objs.FindObject(obj->GetName()))
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objs.Add(obj);
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}
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while((obj = itr2->Next())){
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if(!objs.FindObject(obj->GetName()))
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objs.Add(obj);
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}
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dest->cd();
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TListIter* itr = (TListIter*)objs.MakeIterator();
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while((obj = itr->Next())){
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TKey* key = (TKey*)(obj);
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TKey* key1 = src1->GetKey(obj->GetName());
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TKey* key2 = src2->GetKey(obj->GetName());
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TObject* obj = key->ReadObj();
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TObject* obj1 = key1 ? key1->ReadObj() : 0;
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TObject* obj2 = key2 ? key2->ReadObj() : 0;
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if(obj->InheritsFrom("TDirectory")){
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TDirectory* dir = dest->mkdir(obj->GetName());
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indent += " ";
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if(obj1 && obj2)
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mergedir((TDirectory*)(obj1), (TDirectory*)(obj2), dir);
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else if(obj1)
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clonedir((TDirectory*)(obj1), dir);
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else if(obj2)
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clonedir((TDirectory*)(obj2), dir);
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}
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else if(obj->InheritsFrom("TH1")){
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if(obj1 && obj2){
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TH1* hclone = (TH1*)(obj1->Clone());
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hclone->Add((TH1*)(obj2));
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}
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else if(obj1)
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obj1->Clone();
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else if(obj2)
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obj2->Clone();
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}
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else if(obj->InheritsFrom("TTree")){
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TList treeList;
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if(obj1)
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treeList.Add(obj1);
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if(obj2)
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treeList.Add(obj2);
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TTree::MergeTrees(&treeList);
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}
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else if(obj->InheritsFrom("TNamed")){
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if(obj1)
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obj1->Clone();
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else if(obj2)
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obj2->Clone();
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}
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}
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if(indent.Length() >= 2) indent = indent(0, indent.Length() - 2);
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}
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void mergeroot(char const* name1, char const* name2, char const* merged)
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{
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TFile* file1 = new TFile(name1);
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TFile* file2 = new TFile(name2);
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if(!file1 || file1->IsZombie() || !file2 || file2->IsZombie()){
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std::cerr << "IOError" << std::endl;
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return;
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}
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TFile* output = new TFile(merged, "recreate");
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mergedir(file1, file2, output);
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output->Write();
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output->Close();
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}
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' > mergeroot.C
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root -q -l "mergeroot.C(\"$src1\", \"$src2\", \"$dest\")"
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rm mergeroot.C
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