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-rw-r--r--libxsd/xsd/cxx/tree/serialization/decimal.hxx124
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diff --git a/libxsd/xsd/cxx/tree/serialization/decimal.hxx b/libxsd/xsd/cxx/tree/serialization/decimal.hxx
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--- a/libxsd/xsd/cxx/tree/serialization/decimal.hxx
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-// file : xsd/cxx/tree/serialization/decimal.hxx
-// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
-
-#ifndef XSD_CXX_TREE_SERIALIZATION_DECIMAL_HXX
-#define XSD_CXX_TREE_SERIALIZATION_DECIMAL_HXX
-
-#include <limits> // std::numeric_limits
-#include <locale>
-#include <sstream>
-
-namespace xsd
-{
- namespace cxx
- {
- namespace tree
- {
- namespace bits
- {
- // The formula for the number of decimla digits required is given in:
- //
- // http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1822.pdf
- //
- template <typename C>
- std::basic_string<C>
- insert (const as_decimal<double>& d)
- {
- std::basic_ostringstream<C> os;
- os.imbue (std::locale::classic ());
- std::streamsize prec;
-
- const facet* f = d.facets ?
- facet::find (d.facets, facet::fraction_digits) : 0;
-
- if (f)
- prec = static_cast<std::streamsize> (f->value);
- else
- {
- // Precision.
- //
-#if defined (XSD_CXX_TREE_DECIMAL_PRECISION_MAX)
- prec = 2 + std::numeric_limits<double>::digits * 301/1000;
-#elif defined (XSD_CXX_TREE_DECIMAL_PRECISION)
- prec = XSD_CXX_TREE_DECIMAL_PRECISION;
-#else
- prec = std::numeric_limits<double>::digits10;
-#endif
- }
-
- os.precision (prec);
- os << std::fixed << d.x;
- std::basic_string<C> r (os.str ());
- const C* cr (r.c_str ());
-
- // Remove the trailing zeros and the decimal point if necessary.
- //
- typename std::basic_string<C>::size_type size (r.size ()), n (size);
-
- if (prec != 0)
- {
- for (; n > 0 && cr[n - 1] == '0'; --n)/*noop*/;
-
- if (n > 0 && cr[n - 1] == '.')
- --n;
- }
-
- // See if we have a restriction on total digits.
- //
- f = d.facets ? facet::find (d.facets, facet::total_digits) : 0;
-
- if (f && n > f->value)
- {
- // Point and sign do not count so figure out if we have them.
- //
- typename std::basic_string<C>::size_type extra (
- cr[0] == '-' ? 1 : 0);
-
- if (r.find ('.') < n)
- extra++;
-
- // Unless we have a point and the size difference is one,
- // remove some digits.
- //
- if ((n - extra) > f->value)
- n -= (n - extra - f->value);
-
- if (n > 0 && cr[n - 1] == '.')
- --n;
- }
-
- if (n != size)
- r.resize (n);
-
- return r;
- }
- }
-
- template <typename C>
- inline void
- operator<< (list_stream<C>& ls, const as_decimal<double>& d)
- {
- ls.os_ << bits::insert<C> (d);
- }
- }
- }
-}
-
-namespace XERCES_CPP_NAMESPACE
-{
- inline void
- operator<< (xercesc::DOMElement& e,
- const xsd::cxx::tree::as_decimal<double>& d)
- {
- e << xsd::cxx::tree::bits::insert<char> (d);
- }
-
- inline void
- operator<< (xercesc::DOMAttr& a,
- const xsd::cxx::tree::as_decimal<double>& d)
- {
- a << xsd::cxx::tree::bits::insert<char> (d);
- }
-}
-
-#endif // XSD_CXX_TREE_SERIALIZATION_DECIMAL_HXX