--- /dev/null
+/**
+ =================================================
+ * @file clitkMergeRootFiles.cxx
+ * @author David Sarrut <david.sarrut@creatis.insa-lyon.fr>
+ * @date 01 Apr 2009
+ *
+ * @brief
+ *
+ =================================================*/
+
+#include "clitkMergeRootFiles_ggo.h"
+#include "clitkCommon.h"
+#include "GateMergeManager.hh"
+#include <string>
+#include <TROOT.h>
+#include <TPluginManager.h>
+#include <TFile.h>
+#include <TKey.h>
+#include <TFileMerger.h>
+#include <TTree.h>
+#include <TChain.h>
+#include <TH1.h>
+#include <TH2.h>
+#include <iostream>
+
+using std::endl;
+using std::cout;
+
+struct PetInputFile
+{
+ string filename;
+ double mean_time;
+};
+
+bool sort_pet_input_file(const PetInputFile& a, const PetInputFile& b)
+{
+ return a.mean_time<b.mean_time;
+};
+
+typedef std::vector<PetInputFile> PetInputFiles;
+
+//-----------------------------------------------------------------------------
+int main(int argc, char * argv[]) {
+
+ gROOT->GetPluginManager()->AddHandler("TVirtualStreamerInfo", "*",
+ "TStreamerInfo", "RIO", "TStreamerInfo()");
+
+ // init command line
+ GGO(clitkMergeRootFiles, args_info);
+
+ // Check parameters
+ if (args_info.input_given < 2) {
+ FATAL("Error, please provide at least two inputs files");
+ }
+
+ { // Detect Pet output
+ bool all_pet_output = true;
+ PetInputFiles pet_input_files;
+ for (uint i=0; i<args_info.input_given; i++)
+ {
+ const char* filename = args_info.input_arg[i];
+ PetInputFile input_file;
+ input_file.filename = filename;
+ TFile* handle = TFile::Open(filename,"READ");
+ assert(handle);
+ TTree* hits = dynamic_cast<TTree*>(handle->Get("Hits"));
+ TTree* singles = dynamic_cast<TTree*>(handle->Get("Singles"));
+ const bool is_pet_output = (hits!=NULL) && (singles!=NULL);
+ cout << "testing " << filename << " is_pet_output " << is_pet_output;
+
+ if (is_pet_output)
+ {
+ double time;
+ double time_accum = 0;
+ singles->SetBranchAddress("time",&time);
+ size_t total = singles->GetEntries();
+ for (size_t kk=0; kk<total; kk++)
+ {
+ singles->GetEntry(kk);
+ time_accum += time;
+ }
+
+ input_file.mean_time = time_accum/total;
+ pet_input_files.push_back(input_file);
+ cout << " mean_time " << input_file.mean_time;
+ }
+
+ cout << endl;
+
+ handle->Close();
+ delete handle;
+ all_pet_output &= is_pet_output;
+ }
+ cout << "all_pet_output " << all_pet_output << endl;
+
+ if (all_pet_output)
+ {
+ GateMergeManager manager(args_info.fastmerge_given,args_info.verbose_arg,true,0,"");
+
+ cout << "sorting input file using singles time" << endl;
+ std::sort(pet_input_files.begin(),pet_input_files.end(),sort_pet_input_file);
+
+ Strings input_filenames;
+ for (PetInputFiles::const_iterator iter=pet_input_files.begin(); iter!=pet_input_files.end(); iter++)
+ input_filenames.push_back(iter->filename);
+
+ manager.StartMergingFromFilenames(input_filenames,args_info.output_arg);
+ return 0;
+ }
+ }
+
+
+ // Merge
+ TFileMerger * merger = new TFileMerger;
+ for (uint i=0; i<args_info.input_given; i++) merger->AddFile(args_info.input_arg[i]);
+ merger->OutputFile(args_info.output_arg);
+ merger->Merge();
+
+ // this is the end my friend
+ return 0;
+}
+//-----------------------------------------------------------------------------