From 61f1b1d325c260565db5ff8942826a25faf58ec4 Mon Sep 17 00:00:00 2001
From: David Sarrut <david.sarrut@creatis.insa-lyon.fr>
Date: Fri, 26 Jul 2013 08:33:53 +0200
Subject: [PATCH] Moved from repository clitk.private to tools

---
 tools/clitkMergeRootFiles.cxx | 122 ++++++++++++++++++++++++++++++++++
 tools/clitkMergeRootFiles.ggo |  13 ++++
 2 files changed, 135 insertions(+)
 create mode 100644 tools/clitkMergeRootFiles.cxx
 create mode 100644 tools/clitkMergeRootFiles.ggo

diff --git a/tools/clitkMergeRootFiles.cxx b/tools/clitkMergeRootFiles.cxx
new file mode 100644
index 0000000..4bd0634
--- /dev/null
+++ b/tools/clitkMergeRootFiles.cxx
@@ -0,0 +1,122 @@
+/**
+   =================================================
+   * @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;
+}
+//-----------------------------------------------------------------------------
diff --git a/tools/clitkMergeRootFiles.ggo b/tools/clitkMergeRootFiles.ggo
new file mode 100644
index 0000000..7baa396
--- /dev/null
+++ b/tools/clitkMergeRootFiles.ggo
@@ -0,0 +1,13 @@
+# --------------------------------------------
+# file clitkMergeRootFiles.ggo
+package "clitkMergeRootFiles"
+version "1.0"
+purpose "Merge several ROOT files"
+# --------------------------------------------
+
+option "config"                -  "Config file"               string no
+option "input"                 i  "Input ROOT filenames"      string multiple yes
+option "output"                o  "Output ROOT filename"      string yes
+option "fastmerge"             f  "Fast merge"                optional
+option "verbose"               v  "Verbose level"             int optional
+
-- 
2.45.1