// file      : xsde/cxx/serializer/validating/time.cxx
// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file

#include <stdio.h> // sprintf/snprintf

#include <xsde/cxx/serializer/validating/time.hxx>
#include <xsde/cxx/serializer/validating/time-zone.hxx>

namespace xsde
{
  namespace cxx
  {
    namespace serializer
    {
      namespace validating
      {
        void time_simpl::
        pre (const time& value)
        {
          value_ = value;
        }

        void time_simpl::
        _serialize_content ()
        {
          // We only need strlen("hh:mm:ss.ssssss-hh:mm") + 1 characters to
          // hold all representations of time. We know that the seconds
          // part (represented as double) has default precision of 6.
          //
          char str[22];

          unsigned short h = value_.hours ();
          unsigned short m = value_.minutes ();
          double s = value_.seconds ();

          if (((h < 24 && m < 60 && s >= 0.0 && s < 60.0) ||
               (h == 24 && m == 0 && s == 0.0)) &&
              (!value_.zone_present () || bits::valid_time_zone (value_)))
          {
#ifdef XSDE_SNPRINTF
            int n = snprintf (str, 16, "%.2u:%.2u:%09f", h, m, s);
#else
            int n = sprintf (str, "%.2u:%.2u:%09f", h, m, s);
#endif
            if (n > 0 && n < 16)
            {
              // Remove trailing '0' and '.' if necessary.
              //
              while (str[n - 1] == '0')
                n--;

              if (str[n - 1] == '.')
                n--;

              if (value_.zone_present ())
              {
                if (int z = bits::serialize_time_zone (str + n, value_))
                  n += z;
                else
                {
                  _schema_error (schema_error::invalid_time_value);
                  return;
                }
              }

              _characters (str, static_cast<size_t> (n));
            }
            else
              _schema_error (schema_error::invalid_time_value);
          }
          else
            _schema_error (schema_error::invalid_time_value);
        }
      }
    }
  }
}
