Include/EGnStringKeyVal.h

//----------------------------------------------------------------------------
//  EgalTech 2015-2022
//----------------------------------------------------------------------------
// File : EGnStringKeyVal.h      Data : 13.05.22          Versione : 2.4e2
// Contenuto : Funzioni per gestione coppie chiave-valore in stringhe.
//
//
//
// Modifiche : 23.05.15 DS Creazione modulo.
//             27.11.18 DS Aggiunte Set/Get/RemoveValInNotes.
//             13.05.22 DS In SetValInNotes e GetValInNotes aggiunta gestione separatore ':'.
//
//----------------------------------------------------------------------------

#pragma once

#include "/EgtDev/Include/EGnStringUtils.h"

//----------------------------------------------------------------------------
static const char  EQUAL = '=' ;
static const char  COLON = ':' ;

//----------------------------------------------------------------------------
inline bool
IsValidKey( const std::string& sKey, bool bFull = false)
{
   return ( ! sKey.empty()  &&
            sKey.find( '\n') == std::string::npos  &&
            (( bFull  &&  ( sKey.back() == EQUAL  ||  sKey.back() == COLON))  ||
             sKey.find( EQUAL) == std::string::npos)  &&
            sKey.find_first_not_of( " \t\r\n") != std::string::npos) ;
}

//----------------------------------------------------------------------------
inline bool
FindKey( const std::string& sString, const std::string& sKey, bool bFull = false)
{
   if ( sString.empty()  ||  ! IsValidKey( sKey, bFull))
      return false ;
   return ( sString.compare( 0, sKey.length(), sKey) == 0  &&
            ( bFull  ||  ( sString.length() > sKey.length()  &&  sString[sKey.length()] == EQUAL))) ;
}

//----------------------------------------------------------------------------
inline bool
IsValidVal( const std::string& sString)
{
   return ( sString.empty()  ||
            ( sString.find( '\n') == std::string::npos  &&
              sString.find_first_not_of( " \t\r\n") != std::string::npos)) ;
}

//----------------------------------------------------------------------------
inline bool
ValidateVal( std::string& sString)
{
   std::string::size_type i ;
   while ( ( i = sString.find_first_of( "\t\r\n")) != std::string::npos)
      sString[i] = '_' ;
   return true ;
}

//----------------------------------------------------------------------------
inline bool
SetVal( const std::string& sKey, const std::string& sVal, std::string& sString)
{
   if ( ! IsValidKey( sKey)  ||  ! IsValidVal( sVal))
      return false ;
   sString = sKey + EQUAL + sVal ;
   return true ;
}

//----------------------------------------------------------------------------
template <class T> 
inline bool
SetVal( const std::string& sKey, T& Val, std::string& sString)
{
   return SetVal( sKey, ToString( Val), sString) ;
}

//----------------------------------------------------------------------------
inline bool
GetVal( const std::string& sString, const std::string& sKey, std::string& sVal)
{
   if ( ! FindKey( sString, sKey))
      return false ;
   sVal = sString.substr( sKey.length() + 1) ;
   return true ;
}

//----------------------------------------------------------------------------
template <class T> 
inline bool
GetVal( const std::string& sString, const std::string& sKey, T& Val)
{
   std::string sVal ;
   return ( GetVal( sString, sKey, sVal) && FromString( sVal, Val)) ;
}

//----------------------------------------------------------------------------
inline bool
SetValInNotes( const std::string& sKey, const std::string& sVal, std::string& sNotes)
{
  // verifiche validità chiave
   if ( ! IsValidKey( sKey)  ||  ! IsValidVal( sVal))
      return false ;
  // chiave con carattere finale speciale
   std::string sTkey = sKey ;
   if ( sKey.back() != COLON)
      sTkey += EQUAL ;
  // ricerca se già presente
   STRVECTOR vsTokens ;
   Tokenize( sNotes, ";", vsTokens) ;
   bool bFound = false ;
   for ( auto& sToken : vsTokens) {
      if ( FindKey( sToken, sTkey, true)) {
         sToken = sTkey + sVal ;
         bFound = true ;
         break ;
      }
   }
  // altrimenti aggiunta
   if ( ! bFound)
      vsTokens.emplace_back( sTkey + sVal) ;
  // ricostruzione delle note
   sNotes.clear() ;
   for ( const auto& sToken : vsTokens) {
      if ( ! IsEmptyOrSpaces( sToken))
         sNotes += sToken + ";" ;
   }
   return true ;
}

//----------------------------------------------------------------------------
template <class T> 
inline bool
SetValInNotes( const std::string& sKey, T& Val, std::string& sNotes)
{
   return SetValInNotes( sKey, ToString( Val), sNotes) ;
}

//----------------------------------------------------------------------------
inline bool
GetValInNotes( const std::string& sNotes, const std::string& sKey, std::string& sVal)
{
  // verifiche validità chiave
   if ( sNotes.empty()  ||  ! IsValidKey( sKey))
      return false ;
  // chiave con carattere finale speciale
   std::string sTkey = sKey ;
   if ( sKey.back() != COLON)
      sTkey += EQUAL ;
  // ricerca
   STRVECTOR vsTokens ;
   Tokenize( sNotes, ";", vsTokens) ;
   for ( const auto& sToken : vsTokens) {
      if ( FindKey( sToken, sTkey, true)) {
         sVal = sToken.substr( sTkey.length()) ;
         return true ;
      }
   }
   return false ;
}

//----------------------------------------------------------------------------
template <class T> 
inline bool
GetValInNotes( const std::string& sNotes, const std::string& sKey, T& Val)
{
   std::string sVal ;
   return ( GetValInNotes( sNotes, sKey, sVal) && FromString( sVal, Val)) ;
}

//----------------------------------------------------------------------------
inline bool
RemoveValInNotes( const std::string& sKey, std::string& sNotes)
{
  // verifiche validità chiave
   if ( sNotes.empty()  ||  ! IsValidKey( sKey))
      return false ;
  // chiave con carattere finale speciale
   std::string sTkey = sKey ;
   if ( sKey.back() != COLON)
      sTkey += EQUAL ;
  // ricerca
   STRVECTOR vsTokens ;
   Tokenize( sNotes, ";", vsTokens) ;
   bool bFound = false ;
   for ( size_t i = 0; i < vsTokens.size() ; ++ i) {
      if ( FindKey( vsTokens[i], sTkey, true)) {
         vsTokens.erase( vsTokens.begin() + i) ;
         bFound = true ;
         break ;
      }
   }
  // se trovato e cancellato, devo ricostruire le note
   if ( bFound) {
      sNotes.clear() ;
      for ( const auto& sToken : vsTokens) {
         if ( ! IsEmptyOrSpaces( sToken))
            sNotes += sToken + ";" ;
      }
   }
   return true ;
}