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- migliorie e ottimizzazioni a ToString con interi.
This commit is contained in:
Dario Sassi
2025-01-10 16:27:56 +01:00
parent 6c57d57be1
commit 4b73f70232
1 changed files with 26 additions and 24 deletions
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EGnStringUtils.h
+26 -24
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@@ -184,45 +184,47 @@ EGN_EXPORT bool FromString( const std::string& sVal, DBLVECTOR& vdVal) ;
EGN_EXPORT bool FromString( const std::string& sVal, STRVECTOR& vsVal) ;
//----------------------------------------------------------------------------
EGN_EXPORT const std::string ToStringAdv( int nVal, int nPrec = 1, int nRadix = 10, int* pnErr = nullptr) ;
inline const std::string
ToString( int nVal, int nPrec = 1, int nRadix = 10)
ToString( int nVal, int nPrec = 1, int nRadix = 10, int* pnErr = nullptr)
{
// se necessario processing avanzato
if ( nPrec > 1 || nRadix < 6)
return ToStringAdv( nVal, nPrec, nRadix, pnErr) ;
// eseguo conversione
const int nBuffSize = 36 ;
const int nBuffSize = 16 ;
char szBuff[nBuffSize]{} ;
auto Res = std::to_chars( szBuff, szBuff + nBuffSize - 1, nVal, nRadix) ;
if ( Res.ec != std::errc()) {
std::string sOut = make_error_code( Res.ec).message() ;
return "#Error (" + sOut + ")" ;
if ( pnErr != nullptr)
*pnErr = int( Res.ec) ;
return "#Error" ;
}
// verifico lunghezza minima
int nLen = (int) strlen( szBuff) ;
if ( nLen >= nPrec)
return szBuff ;
// porto la stringa alla minima lunghezza
std::string sBuff( szBuff) ;
sBuff.insert( 0, ( nPrec - nLen), '0') ;
return sBuff ;
// gestione codice di errore
if ( pnErr != nullptr)
*pnErr = 0 ;
return szBuff ;
}
EGN_EXPORT const std::string ToStringAdv( unsigned int nVal, int nPrec = 1, int nRadix = 10, int* pnErr = nullptr) ;
inline const std::string
ToString( unsigned int nVal, int nPrec = 1, int nRadix = 10)
ToString( unsigned int nVal, int nPrec = 1, int nRadix = 10, int* pnErr = nullptr)
{
// se necessario processing avanzato
if ( nPrec > 1 || nRadix < 6)
return ToStringAdv( nVal, nPrec, nRadix, pnErr) ;
// eseguo conversione
const int nBuffSize = 36 ;
const int nBuffSize = 16 ;
char szBuff[nBuffSize]{} ;
auto Res = std::to_chars( szBuff, szBuff + nBuffSize - 1, nVal, nRadix) ;
if ( Res.ec != std::errc()) {
std::string sOut = make_error_code( Res.ec).message() ;
return "#Error (" + sOut + ")" ;
if ( pnErr != nullptr)
*pnErr = int( Res.ec) ;
return "#Error" ;
}
// verifico lunghezza minima
int nLen = (int) strlen( szBuff) ;
if ( nLen >= nPrec)
return szBuff ;
// porto la stringa alla minima lunghezza
std::string sBuff( szBuff) ;
sBuff.insert( 0, ( nPrec - nLen), '0') ;
return sBuff ;
// gestione codice di errore
if ( pnErr != nullptr)
*pnErr = 0 ;
return szBuff ;
}
template <size_t size>
const std::string ToString( const int (&nVal)[size], int nPrec = 1)