111 lines
2.4 KiB
Plaintext
111 lines
2.4 KiB
Plaintext
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// file : xsd/cxx/xml/char-iso8859-1.txx
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// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
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#include <xsd/cxx/config.hxx> // XSD_CXX11
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#ifdef XSD_CXX11
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# include <memory> // std::unique_ptr
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#else
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# include <xsd/cxx/auto-array.hxx>
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#endif
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namespace xsd
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{
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namespace cxx
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{
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namespace xml
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{
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template <typename C>
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C char_iso8859_1_transcoder<C>::unrep_char_ = 0;
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template <typename C>
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std::basic_string<C> char_iso8859_1_transcoder<C>::
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to (const XMLCh* s, std::size_t len)
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{
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const XMLCh* end (s + len);
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// Find what the resulting buffer size will be.
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//
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std::size_t rl (0);
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unsigned int u (0); // Four byte UCS-4 char.
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bool valid (true);
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const XMLCh* p (s);
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for (; p < end; ++p)
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{
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if (*p >= 0xD800 && *p <= 0xDBFF)
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{
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// Make sure we have one more char and it has a valid
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// value for the second char in a surrogate pair.
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//
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if (++p == end || !((*p >= 0xDC00) && (*p <= 0xDFFF)))
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{
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valid = false;
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break;
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}
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}
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rl++;
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}
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if (!valid)
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throw invalid_utf16_string ();
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std::basic_string<C> r;
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r.reserve (rl + 1);
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r.resize (rl);
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C* rs (const_cast<C*> (r.c_str ()));
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std::size_t i (0);
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p = s;
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// Tight first loop for the common case.
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//
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for (; p < end && *p < 0x100; ++p)
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rs[i++] = C (*p);
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if (p < end && unrep_char_ == 0)
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throw iso8859_1_unrepresentable ();
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for (; p < end; ++p)
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{
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XMLCh x (*p);
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if ((x >= 0xD800) && (x <= 0xDBFF))
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{
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u = ((x - 0xD800) << 10) + (*++p - 0xDC00) + 0x10000;
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}
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else
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u = x;
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rs[i++] = u < 0x100 ? C (u) : unrep_char_;
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}
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return r;
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}
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template <typename C>
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XMLCh* char_iso8859_1_transcoder<C>::
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from (const C* s, std::size_t len)
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{
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const C* end (s + len);
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#ifdef XSD_CXX11
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std::unique_ptr<XMLCh[]> r (
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#else
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auto_array<XMLCh> r (
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#endif
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new XMLCh[len + 1]);
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XMLCh* ir (r.get ());
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for (const C* p (s); p < end; ++p)
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*ir++ = static_cast<unsigned char> (*p);
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*ir = XMLCh (0);
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return r.release ();
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}
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}
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}
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}
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