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// file : xsd/cxx/xml/string.ixx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2005-2009 Code Synthesis Tools CC
// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
#ifndef XSD_CXX_XML_STRING_IXX
#define XSD_CXX_XML_STRING_IXX
#include <cassert>
#include <cstring> // std::memcpy
#include <xercesc/util/XMLString.hpp>
#include <xsd/cxx/xml/std-memory-manager.hxx>
// We sometimes need this functionality even if we are building for
// wchar_t.
//
namespace xsd
{
namespace cxx
{
namespace xml
{
#ifndef XSD_USE_LCP
namespace bits
{
// UTF-16 to/from UTF-8 transcoder.
//
template <typename C>
struct char_transcoder
{
static std::basic_string<C>
to (const XMLCh* s, std::size_t length);
static XMLCh*
from (const C* s, std::size_t length);
private:
static const unsigned char first_byte_mask_[5];
};
}
#endif
template <>
inline std::basic_string<char>
transcode<char> (const XMLCh* s)
{
if (s == 0)
return std::basic_string<char> ();
#ifndef XSD_USE_LCP
return bits::char_transcoder<char>::to (
s, xercesc::XMLString::stringLen (s));
#else
// Use Xerces-C++ local code page transcoding.
//
std_memory_manager mm;
auto_array<char, std_memory_manager> r (
xercesc::XMLString::transcode (s, &mm), mm);
return std::basic_string<char> (r.get ());
#endif
}
template <>
inline std::basic_string<char>
transcode<char> (const XMLCh* s, std::size_t len)
{
if (s == 0 || len == 0)
return std::basic_string<char> ();
#ifndef XSD_USE_LCP
// Convert UTF-16 to UTF-8
//
return bits::char_transcoder<char>::to (s, len);
#else
// Use Xerces-C++ local code page transcoding.
//
auto_array<XMLCh> tmp (new XMLCh[len + 1]);
std::memcpy (tmp.get (), s, len * sizeof (XMLCh));
tmp[len] = XMLCh (0);
std_memory_manager mm;
auto_array<char, std_memory_manager> r (
xercesc::XMLString::transcode (tmp.get (), &mm), mm);
tmp.reset ();
return std::basic_string<char> (r.get ());
#endif
}
template <>
inline XMLCh*
transcode_to_xmlch (const char* s)
{
#ifndef XSD_USE_LCP
// Convert UTF-8 to UTF-16
//
return bits::char_transcoder<char>::from (
s, std::char_traits<char>::length (s));
#else
// Use Xerces-C++ local code page transcoding.
//
std_memory_manager mm;
return xercesc::XMLString::transcode (s, &mm);
#endif
}
template <>
inline XMLCh*
transcode_to_xmlch (const std::basic_string<char>& s)
{
#ifndef XSD_USE_LCP
// Convert UTF-8 to UTF-16
//
return bits::char_transcoder<char>::from (
s.c_str (), s.length ());
#else
// Use Xerces-C++ local code page transcoding.
//
std_memory_manager mm;
return xercesc::XMLString::transcode (s.c_str (), &mm);
#endif
}
}
}
}
#endif // XSD_CXX_XML_STRING_IXX
#if defined(XSD_USE_CHAR) || !defined(XSD_USE_WCHAR)
#ifndef XSD_CXX_XML_STRING_IXX_CHAR
#define XSD_CXX_XML_STRING_IXX_CHAR
#endif // XSD_CXX_XML_STRING_IXX_CHAR
#endif // XSD_USE_CHAR
#if defined(XSD_USE_WCHAR) || !defined(XSD_USE_CHAR)
#ifndef XSD_CXX_XML_STRING_IXX_WCHAR
#define XSD_CXX_XML_STRING_IXX_WCHAR
namespace xsd
{
namespace cxx
{
namespace xml
{
namespace bits
{
template <typename W, std::size_t S>
struct wchar_transcoder;
// Specialization for 2-byte wchar_t (resulting encoding is UTF-16).
//
template <typename W>
struct wchar_transcoder<W, 2>
{
static std::basic_string<W>
to (const XMLCh* s, std::size_t length);
static XMLCh*
from (const W* s, std::size_t length);
};
// Specialization for 4-byte wchar_t (resulting encoding is UCS-4).
//
template <typename W>
struct wchar_transcoder<W, 4>
{
static std::basic_string<W>
to (const XMLCh* s, std::size_t length);
static XMLCh*
from (const W* s, std::size_t length);
};
}
template <>
inline std::basic_string<wchar_t>
transcode<wchar_t> (const XMLCh* s)
{
if (s == 0)
return std::basic_string<wchar_t> ();
return bits::wchar_transcoder<wchar_t, sizeof (wchar_t)>::to (
s, xercesc::XMLString::stringLen (s));
}
template <>
inline std::basic_string<wchar_t>
transcode<wchar_t> (const XMLCh* s, std::size_t len)
{
if (s == 0 || len == 0)
return std::basic_string<wchar_t> ();
return bits::wchar_transcoder<wchar_t, sizeof (wchar_t)>::to (
s, len);
}
template <>
inline XMLCh*
transcode_to_xmlch (const wchar_t* s)
{
return bits::wchar_transcoder<wchar_t, sizeof (wchar_t)>::from (
s, std::char_traits<wchar_t>::length (s));
}
template <>
inline XMLCh*
transcode_to_xmlch (const std::basic_string<wchar_t>& s)
{
return bits::wchar_transcoder<wchar_t, sizeof (wchar_t)>::from (
s.c_str (), s.length ());
}
}
}
}
#endif // XSD_CXX_XML_STRING_IXX_WCHAR
#endif // XSD_USE_WCHAR
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