1 files changed, 161 insertions, 0 deletions
diff --git a/libxsd/libxsd/cxx/xml/string.txx b/libxsd/libxsd/cxx/xml/string.txx
new file mode 100644
index 0000000..7902d8a
--- /dev/null
+++ b/libxsd/libxsd/cxx/xml/string.txx
@@ -0,0 +1,161 @@
+// file      : libxsd/cxx/xml/string.txx
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#ifndef XSD_CXX_XML_STRING_TXX
+#define XSD_CXX_XML_STRING_TXX
+
+
+#endif // XSD_CXX_XML_STRING_TXX
+
+#if defined(XSD_USE_WCHAR) || !defined(XSD_USE_CHAR)
+
+#ifndef XSD_CXX_XML_STRING_TXX_WCHAR
+#define XSD_CXX_XML_STRING_TXX_WCHAR
+
+#include <libxsd/cxx/xml/exceptions.hxx>
+
+namespace xsd
+{
+  namespace cxx
+  {
+    namespace xml
+    {
+      namespace bits
+      {
+        // wchar_transcoder (specialization for 2-byte wchar_t)
+        //
+        template <typename W>
+        std::basic_string<W> wchar_transcoder<W, 2>::
+        to (const XMLCh* s, std::size_t length)
+        {
+          std::basic_string<W> r;
+          r.reserve (length + 1);
+          r.resize (length);
+          W* rs (const_cast<W*> (r.c_str ()));
+
+          for (std::size_t i (0); i < length; ++s, ++i)
+          {
+            rs[i] = *s;
+          }
+
+          return r;
+        }
+
+        template <typename W>
+        XMLCh* wchar_transcoder<W, 2>::
+        from (const W* s, std::size_t length)
+        {
+#ifdef XSD_CXX11
+          std::unique_ptr<XMLCh[]> r (
+#else
+          auto_array<XMLCh> r (
+#endif
+            new XMLCh[length + 1]);
+
+          XMLCh* ir (r.get ());
+
+          for (std::size_t i (0); i < length; ++ir, ++i)
+          {
+            *ir = static_cast<XMLCh> (s[i]);
+          }
+
+          *ir = XMLCh (0);
+
+          return r.release ();
+        }
+
+
+        // wchar_transcoder (specialization for 4-byte wchar_t)
+        //
+        template <typename W>
+        std::basic_string<W> wchar_transcoder<W, 4>::
+        to (const XMLCh* s, std::size_t length)
+        {
+          const XMLCh* end (s + length);
+
+          // Find what the resulting buffer size will be.
+          //
+          std::size_t rl (0);
+
+          for (const XMLCh* p (s); p < end; ++p)
+          {
+            rl++;
+
+            if ((*p >= 0xD800) && (*p <= 0xDBFF))
+            {
+              // Make sure we have one more char and it has a valid
+              // value for the second char in a surrogate pair.
+              //
+              if (++p == end || !((*p >= 0xDC00) && (*p <= 0xDFFF)))
+                throw invalid_utf16_string ();
+            }
+          }
+
+          std::basic_string<W> r;
+          r.reserve (rl + 1);
+          r.resize (rl);
+          W* rs (const_cast<W*> (r.c_str ()));
+
+          std::size_t i (0);
+
+          for (const XMLCh* p (s); p < end; ++p)
+          {
+            XMLCh x (*p);
+
+            if (x < 0xD800 || x > 0xDBFF)
+              rs[i++] = W (x);
+            else
+              rs[i++] = ((x - 0xD800) << 10) + (*++p - 0xDC00) + 0x10000;
+          }
+
+          return r;
+        }
+
+        template <typename W>
+        XMLCh* wchar_transcoder<W, 4>::
+        from (const W* s, std::size_t length)
+        {
+          // Find what the resulting buffer size will be.
+          //
+          std::size_t rl (0);
+
+          for (const W* p (s); p < s + length; ++p)
+          {
+            rl += (*p & 0xFFFF0000) ? 2 : 1;
+          }
+
+#ifdef XSD_CXX11
+          std::unique_ptr<XMLCh[]> r (
+#else
+          auto_array<XMLCh> r (
+#endif
+            new XMLCh[rl + 1]);
+
+          XMLCh* ir (r.get ());
+
+          for (const W* p (s); p < s + length; ++p)
+          {
+            W w (*p);
+
+            if (w & 0xFFFF0000)
+            {
+              // Surrogate pair.
+              //
+              *ir++ = static_cast<XMLCh> (((w - 0x10000) >> 10) + 0xD800);
+              *ir++ = static_cast<XMLCh> ((w & 0x3FF) + 0xDC00);
+            }
+            else
+              *ir++ = static_cast<XMLCh> (w);
+          }
+
+          *ir = XMLCh (0);
+
+          return r.release ();
+        }
+      }
+    }
+  }
+}
+
+#endif // XSD_CXX_XML_STRING_TXX_WCHAR
+#endif // XSD_USE_WCHAR