//----------------------------------------------------------------------------
//  EgalTech 2013-2013
//----------------------------------------------------------------------------
// File : EgnStringUtils.h      Data : 20.11.13          Versione : 1.3a1
// Contenuto : Dichiarazione delle funzioni di utilità per le stringhe.
//
//
//
// Modifiche : 20.11.13 DS Creazione modulo.
//
//
//----------------------------------------------------------------------------

#pragma once

#include <algorithm>
#include "/EgtDev/Include/EgnStringBase.h"

//----------------------- Macro per import/export -----------------------------
#undef EGN_EXPORT
#if defined( I_AM_EGN)            // da definirsi solo nella DLL
   #define EGN_EXPORT __declspec( dllexport)
#else
   #define EGN_EXPORT __declspec( dllimport)
#endif

//----------------------------------------------------------------------------
typedef std::vector<std::string> STRVECTOR ;

//----------------------------------------------------------------------------
inline std::string&
TrimLeft( std::string& sString, const char* szTarget = " \t\r\n")
      {  size_t iStartPos = sString.find_first_not_of( szTarget) ;
         if ( iStartPos != std::string::npos)
            sString.erase( 0, iStartPos) ;
         else
            sString.clear() ;
         return sString ; }
inline std::string&
TrimRight( std::string& sString, const char* szTarget = " \t\r\n")
      {  size_t iEndPos = sString.find_last_not_of( szTarget) ;
         if ( iEndPos != std::string::npos)
            sString.erase( iEndPos + 1) ;
         else
            sString.clear() ;
         return sString ; }
inline std::string&
Trim( std::string& sString, const char* szTarget = " \t\r\n")
      { return TrimLeft( TrimRight( sString, szTarget), szTarget) ; }
inline std::string&
TrimUtf8Bom( std::string& sString)
      { if ( sString[0] == '\xef'  &&  sString[1] == '\xbb'  &&  sString[2] == '\xbf')
           sString.erase( 0, 3) ;
        return sString ; }

//----------------------------------------------------------------------------
inline std::string&
ToUpper( std::string& sString)
      { std::transform( sString.begin(), sString.end(), sString.begin(), ::toupper) ;
        return sString ; }
inline std::string&
ToLower( std::string& sString)
      { std::transform( sString.begin(), sString.end(), sString.begin(), ::tolower) ;
        return sString ; }

//----------------------------------------------------------------------------
inline bool
FromString( const std::string& sVal, int& nVal)
      { const char* pStart ;
        char* pStop ;
        errno = 0 ;
        pStart = sVal.c_str() ;
        nVal = strtol( pStart, &pStop, 10) ;
        return ( pStop != pStart  &&  *pStop == '\0'  &&  errno == 0) ; }
inline bool
FromString( const std::string& sVal, bool& bVal)
      { int nTmp ;
        if ( ! FromString( sVal, nTmp))
           return false ;
        bVal = ( nTmp != 0) ;
        return true ; }
inline bool
FromString( const std::string& sVal, double& dVal)
      { const char* pStart ;
        char* pStop ;
        errno = 0 ;
        pStart = sVal.c_str() ;
        dVal = strtod( pStart, &pStop) ;
        return ( pStop != pStart  &&  *pStop == '\0'  &&  errno == 0) ; }
EGN_EXPORT const std::string ToString( int nVal, int nPrec = 1) ;
inline const std::string
ToString( bool bVal)
      { return std::string( ( bVal ? "1" : "0")) ; }
EGN_EXPORT const std::string ToString( double dVal, int nPrec = 6) ;

//----------------------------------------------------------------------------
EGN_EXPORT void Split( const std::string& sString, const std::string& sSeparator, bool bFirstVsLast,
                       std::string& sFirst, std::string& sLast) ;
inline void
SplitFirst( const std::string& sString, const std::string& sSeparator, std::string& sFirst, std::string& sLast)
      { Split( sString, sSeparator, true, sFirst, sLast) ; }
inline void
SplitLast( const std::string& sString, const std::string& sSeparator, std::string& sFirst, std::string& sLast)
      { Split( sString, sSeparator, false, sFirst, sLast) ; }

//----------------------------------------------------------------------------
EGN_EXPORT bool Tokenize( const std::string& sString, const std::string& sSeparators, STRVECTOR& vsTokens) ;
EGN_EXPORT bool Tokenize( const std::string& sString, const std::string& sSeparators,
                          const std::string& sAtomStarts, const std::string& sAtomEnds, STRVECTOR& vsTokens) ;

//----------------------------------------------------------------------------
EGN_EXPORT int ReplaceString( std::string& sString, const std::string& sOld, const std::string& sNew) ;