LocaleGuard.h

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/*---------------------------------------------------------------------\
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#ifndef ZYPP_BASE_LOCALEGUARD_H
#define ZYPP_BASE_LOCALEGUARD_H

#include <locale.h>
#include <string>

#include "zypp/base/Easy.h"

namespace zypp
{
  class LocaleGuard
  {
    NON_COPYABLE(LocaleGuard);
    NON_MOVABLE(LocaleGuard);

  public:
    LocaleGuard( int category_r, const std::string & value_r = "C" )
    : _category( -1 )
    {
      const char * ovalue = ::setlocale( category_r, nullptr );
      if ( ovalue && ovalue != value_r )
      {
        _category = category_r;
        _value    = ovalue;
        ::setlocale( _category, value_r.c_str() );
      }
    }

    ~LocaleGuard()
    { restore(); }

    void restore()
    {
      if ( _category != -1 )
      {
        ::setlocale( _category, _value.c_str() );
        _category = -1;
      }
    }

  private:
    int         _category;      
    std::string _value;         
  };
} // namespace zypp
#endif // ZYPP_BASE_LOCALEGUARD_H