// $Id: HbookName.h,v 1.2 2006/12/10 19:11:56 leggett Exp $
 // ============================================================================
 #ifndef GAUDIALG_HBOOKNAME_H 
 #define GAUDIALG_HBOOKNAME_H 1
 // Include files
 #include <string>
 #include <algorithm>
 
 /** @file 
  *  few useful function to construct names of Hbook histograms 
  *  and directories 
  *  functions are imported from 
  *  Tools/LoKi and Calo/CaloUtils packages 
  *  @author Vanya BELYAEV Ivan.Belyaev@itep.ru
  *  @date   2002-07-25
  */
 
 namespace 
 {
   /** @fn dirHbookName
    *  
    *  simple function to convert any valid Gaudi address
    *  (name in Transient Store)
    *  to address, which is simultaneously valid for Hbook directory
    *
    *    examples:  
    *   "verylongname"  -->  "verylong/name"
    *
    *  @param   old    old address 
    *  @param   maxLen maximum allowed length of directory name (16 for Hbook) 
    *  @return  new  address 
    *
    *  @author Vanya BELYAEV Ivan.Belyaev@itep.ru
    *  @date   06/07/2001
    */
   inline std::string dirHbookName 
   ( const std::string& addr        , 
     const int          maxLen = 16 )
   {
     // ignore empty locations 
     if( addr.empty() ) { return std::string(); }
     //
     std::string old( addr );
     // remove long names
     if( 0 < maxLen &&  maxLen < (int) old.size() ) 
     { 
       std::string::iterator p1,p2;
       p1 = old.begin();
       const char sep('/');
       while( old.end() != p1 )
       {
         p1 = 
           std::find_if( p1        , 
                         old.end() , 
                         std::bind2nd(std::not_equal_to<char>(),sep));
         p2 = std::find( p1 , old.end() , sep ) ;
         if( ( p2 - p1 ) <= (int) maxLen  ) { p1 = p2 ; continue ; }
         old.insert( p1 + maxLen , sep ) ;  
         p1 = old.begin() ; 
       }
     }
     ///
     return old;
   }
   
   /** @fn histoHbookName
    *  
    *  simple function to convert any valid 
    *   Gaudi address(name in Transient Store)
    *  to address, which is simultaneously valid for Hbook histogram
    *
    *    examples:  
    *   "verylongname/116"  -->  "verylong/name/116"
    *   "verylongname"      -->  "verylong/name/1"
    *   "somename/here/"    -->  "somename/here/1"
    *   "directory/object"  -->  "director/y/object/1"
    *
    *  @param   old    old address 
    *  @param   maxLen maximum allowed length of directory name (8 for Hbook) 
    *  @return  new  address 
    *
    *  @author Vanya BELYAEV Ivan.Belyaev@itep.ru
    *  @date   06/07/2001
    */
   inline std::string histoHbookName 
   ( const std::string& addr       , 
     const int          maxLen = 8 )
   {
     // ignore empty locations 
     if( addr.empty() ) { return std::string(); }
     //
     std::string old( addr );
     { // make valid histogram ID (integer)  
       std::string::size_type pos 
         = old.find_last_of( '/' );
       if      ( std::string::npos == pos ) { old += "/1" ; }
       else if ( old.size() - 1    == pos ) { old += '1'  ; }
       else
       {
         const int id = 
           atoi( std::string( old , pos + 1 , std::string::npos ).c_str() );
         if( 0 == id ) { old+="/1"; }
       }
     }
     // remove long names
     if( 0 < maxLen &&  maxLen < (int) old.size() ) 
     { 
       std::string::iterator p1,p2;
       p1 = old.begin();
       const char sep('/');
       while( old.end() != p1 )
       {
         p1 = 
           std::find_if( p1        , 
                         old.end() , 
                         std::bind2nd(std::not_equal_to<char>(),sep));
         p2 = std::find( p1 , old.end() , sep ) ;
         if( ( p2 - p1 ) <= (int) maxLen  ) { p1 = p2 ; continue ; }
         old.insert( p1 + maxLen , sep ) ;  
         p1 = old.begin() ; 
       }
     }
     //
     return old;
   }
   
 } // end of anynous namespace 
 
 // ============================================================================
 // The END 
 // ============================================================================
 #endif // GAUDIALG_HBOOKNAME_H
 // ============================================================================
 

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