/usr/include/xsd/cxx/xml/string.txx is in xsdcxx 4.0.0-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// copyright : Copyright (c) 2005-2014 Code Synthesis Tools CC
// 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 <xsd/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
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