/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_7/src/CalibFormats/SiPixelObjects/interface/PixelConfigList.h

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#ifndef PixelConfigList_h
#define PixelConfigList_h

namespace pos{
  class PixelConfigList {

  public:

    void writefile(){

      std::string directory=getenv("PIXELCONFIGURATIONBASE");
/*       directory+="/PixelConfigDataExamples/"; */
      directory+="/";
    
      std::string filename=directory+"/configurations.txt";

      std::ofstream out(filename.c_str());
      assert(out.good());

      for (unsigned int i=0;i<configs.size();i++){
        //std::cout << "key "<<i<<std::endl; 
        out << "key "<<i<<std::endl;
        configs[i].write(out);
        out <<std::endl;
        //std::cout <<std::endl; 
      }


    }


    void readfile(std::string filename){

      std::ifstream in(filename.c_str());

      std::string tag;
            
      in >> tag;
      while(tag.substr(0,1) == "#") {
        in.ignore(4096, '\n'); //skips to endl;
        in >> tag;
      }

      unsigned int version=0;

      while(!in.eof()){
        if (tag!="key"){
          std::cout << "PixelConfigDB: tag="<<tag<<std::endl;
          assert(0);
        }
        unsigned int tmp_version;
        in >> tmp_version;
        if (version!=tmp_version){
          std::cout << "PixelConfigDB: read version: "<<tmp_version<<" while expected "
                    << version << std::endl;
          assert(0);
        }

        in >> tag;
        while(tag.substr(0,1) == "#") {
          in.ignore(4096, '\n'); //skips to endl;
          in >> tag;
        }

        PixelConfig aConfig;
        while (tag!="key"&&in.good()){
          unsigned int tmp;
          in >>tmp;
          //std::cout << "adding: "<<tag<<" "<<tmp<<std::endl;
          aConfig.add(tag,tmp);
          in >> tag;
          while(tag.substr(0,1) == "#") {
            in.ignore(4096, '\n'); //skips to endl;
            in >> tag;
          }
        }
      
        configs.push_back(aConfig);
        version++;
      
      };
                
      in.close();

    }

    //Method will return new key
    unsigned int clone(unsigned int oldkey, std::string path, unsigned int version){
      PixelConfig aConfig=configs[oldkey];
    
      unsigned int oldversion;
    
      if (-1==aConfig.update(path,oldversion,version)){
        std::cout << "Old version not found for path="<<path<<" in config "<<oldkey<<std::endl;
        assert(0);
      }

      configs.push_back(aConfig);
    
      return configs.size()-1;

    }


    //Method will return new key
    unsigned int add(PixelConfig& aConfig){

      configs.push_back(aConfig);
    
      return configs.size()-1;

    }

    unsigned int size(){ return configs.size(); }

    PixelConfig& operator[](unsigned int i) {return configs[i];}
    
    void reload(std::string filename)
    {
      configs.clear() ;
      readfile(filename) ;
    }

    unsigned int numberOfConfigs() { return configs.size(); }

  private:

    std::vector<PixelConfig> configs;

  };
}
#endif