AliTPCConfigDA.cxx Simple text configuration file parser

AliTPCConfigDA.h                 Simple text configuration file parser
(Jens Wiechula)

diff --git a/TPC/AliTPCConfigDA.cxx b/TPC/AliTPCConfigDA.cxx
new file mode 100644 (file)
index 0000000..0509346
--- /dev/null
+++ b/TPC/AliTPCConfigDA.cxx
@@ -0,0 +1,154 @@
+/**************************************************************************
+ * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ *                                                                        *
+ * Author: The ALICE Off-line Project.                                    *
+ * Contributors are mentioned in the code where appropriate.              *
+ *                                                                        *
+ * Permission to use, copy, modify and distribute this software and its   *
+ * documentation strictly for non-commercial purposes is hereby granted   *
+ * without fee, provided that the above copyright notice appears in all   *
+ * copies and that both the copyright notice and this permission notice   *
+ * appear in the supporting documentation. The authors make no claims     *
+ * about the suitability of this software for any purpose. It is          *
+ * provided "as is" without express or implied warranty.                  *
+ **************************************************************************/
+
+///////////////////////////////////////////////////////////////////////////////
+//                                                                           //
+//  Class for Parsing simple text configuration files                        //
+//  It produces a TMap for the Key=>Value pairs found in the                 //
+//  Configutation file.                                                      //
+//                                                                           //
+// The configuration file has a simple structure:                            //
+// * Lines starting with a # or empty lines are ignored                      //
+// * Key and Value are separated either by a <tab> or <space>es              //
+//                                                                           //
+//  Currently the class is used in the TPC DAs to allow an adjustment of     //
+//  the most relevant parameters without recompiling the DAs                 //
+///////////////////////////////////////////////////////////////////////////////
+
+
+#include <fstream>
+//Root includes
+#include <TObjString.h>
+#include <TObjArray.h>
+#include <TString.h>
+#include <TIterator.h>
+#include <TMap.h>
+//AliRoot includes
+
+//header
+#include "AliTPCConfigDA.h"
+
+
+
+AliTPCConfigDA::AliTPCConfigDA() :
+  TObject(),
+  fConfigMap(new TMap)
+{
+ //
+ // default constructor
+ //
+ fConfigMap->SetOwnerKeyValue();
+} 
+//_____________________________________________________________________
+AliTPCConfigDA::AliTPCConfigDA(const AliTPCConfigDA &cfg) :
+  TObject(),
+  fConfigMap((TMap*)cfg.fConfigMap->Clone())
+{
+  //
+  // copy constructor
+  //
+  fConfigMap->SetOwnerKeyValue();
+}
+
+//_____________________________________________________________________
+AliTPCConfigDA::AliTPCConfigDA(const char* cfgfile) :
+  TObject(),
+  fConfigMap(new TMap)
+{
+  //
+  // default constructor using the config file name as input parameter
+  //
+  fConfigMap->SetOwnerKeyValue();
+  if ( !cfgfile ) return;
+  ParseConfigFileTxt(cfgfile);
+}
+//_____________________________________________________________________
+AliTPCConfigDA& AliTPCConfigDA::operator = (const  AliTPCConfigDA &source)
+{
+  //
+  // assignment operator
+  //
+  if (&source == this) return *this;
+  new (this) AliTPCConfigDA(source);
+
+  return *this;
+}
+//_____________________________________________________________________
+AliTPCConfigDA::~AliTPCConfigDA()
+{
+ //
+ // dtor
+ //   
+  delete fConfigMap;
+}
+//_____________________________________________________________________
+Int_t AliTPCConfigDA::ParseConfigFileTxt(const char* cfgfile)
+{
+ //
+ // Function to parse a configuration file
+ //
+
+ ifstream file(cfgfile);
+ if ( !file.is_open() ){
+  Error("ParseConfigFileTxt","File %s could not be opened!", cfgfile);
+  return 1;
+ } 
+ TString strFile;
+ strFile.ReadFile(file);
+ TObjArray *arr=strFile.Tokenize("\n");
+ if ( !arr ) {
+   file.close(); 
+   return 2;
+ }
+ TIter nextLine(arr);
+ while (TObject *l=nextLine()){
+  TString line(((TObjString*)l)->GetString());
+  //remove whitespcaces 
+  line.Remove(TString::kBoth,' ');
+  line.Remove(TString::kBoth,'\t');
+  if ( line.BeginsWith("#") || line=="" ) continue;
+  TObjArray *arrValues=line.Tokenize(" \t");
+  //currently only name => Value is supported
+  if (arrValues->GetEntries()!=2){
+    printf("AliTPCConfigDA::ParseConfigFileTxt: Cannot parse line '%s'\n",line.Data());
+    delete arrValues;
+    continue;
+  }
+  fConfigMap->Add(arrValues->At(0)->Clone(),arrValues->At(1)->Clone());
+  delete arrValues; 
+ } 
+
+ delete arr;
+ return 0;
+}
+//_____________________________________________________________________
+Float_t AliTPCConfigDA::GetValue(const char *key)
+{
+  //
+  //Get value for the speciefied key
+  //
+  TObject *val=fConfigMap->GetValue(key);
+  if ( !val ) return -999.;
+  TString sval(((TObjString*)val)->GetString());
+  return sval.Atof(); 
+}
+//_____________________________________________________________________
+void AliTPCConfigDA::ResetMap()
+{
+  //
+  // Reset the map with the configuration values
+  //
+  fConfigMap->DeleteAll();
+}

diff --git a/TPC/AliTPCConfigDA.h b/TPC/AliTPCConfigDA.h
new file mode 100644 (file)
index 0000000..f40652c
--- /dev/null
+++ b/TPC/AliTPCConfigDA.h
@@ -0,0 +1,30 @@
+#ifndef ALITPCCONFIGDA_H
+#define ALITPCCONFIGDA_H
+/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * See cxx source for full Copyright notice                               */
+#include <TObject.h>
+
+class TMap;
+
+class AliTPCConfigDA : public TObject{
+  
+public:
+  AliTPCConfigDA();
+  AliTPCConfigDA(const char* cfgfile);
+  AliTPCConfigDA(const AliTPCConfigDA &cfg);
+  AliTPCConfigDA& operator = (const AliTPCConfigDA &cfg);
+ 
+  virtual ~AliTPCConfigDA();
+  
+  Int_t ParseConfigFileTxt(const char* cfgfile);
+  Float_t GetValue(const char* name); 
+
+  const TMap* GetConfigurationMap() const {return fConfigMap;}
+  void ResetMap();
+
+private:
+  TMap *fConfigMap;
+  
+  ClassDef(AliTPCConfigDA, 1)         // TPC DA configuration file parser
+};
+#endif