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// ----------------------------------------------------------------------------
// Copyright (C) 2002-2006 Marcin Kalicinski
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// For more information, see www.boost.org
// ----------------------------------------------------------------------------
#ifndef BOOST_PROPERTY_TREE_DETAIL_PTREE_UTILS_HPP_INCLUDED
#define BOOST_PROPERTY_TREE_DETAIL_PTREE_UTILS_HPP_INCLUDED
#include <boost/limits.hpp>
#include <boost/type_traits/integral_constant.hpp>
#include <boost/mpl/has_xxx.hpp>
#include <boost/mpl/and.hpp>
#include <string>
#include <algorithm>
#include <locale>
namespace boost { namespace property_tree { namespace detail
{
template<class T>
struct less_nocase
{
typedef typename T::value_type Ch;
std::locale m_locale;
inline bool operator()(Ch c1, Ch c2) const
{
return std::toupper(c1, m_locale) < std::toupper(c2, m_locale);
}
inline bool operator()(const T &t1, const T &t2) const
{
return std::lexicographical_compare(t1.begin(), t1.end(),
t2.begin(), t2.end(), *this);
}
};
template <typename Ch>
struct is_character : public boost::false_type {};
template <>
struct is_character<char> : public boost::true_type {};
template <>
struct is_character<wchar_t> : public boost::true_type {};
BOOST_MPL_HAS_XXX_TRAIT_DEF(internal_type)
BOOST_MPL_HAS_XXX_TRAIT_DEF(external_type)
template <typename T>
struct is_translator : public boost::mpl::and_<
has_internal_type<T>, has_external_type<T> > {};
// Naively convert narrow string to another character type
template<class Ch>
std::basic_string<Ch> widen(const char *text)
{
std::basic_string<Ch> result;
while (*text)
{
result += Ch(*text);
++text;
}
return result;
}
// Naively convert string to narrow character type
template<class Ch>
std::string narrow(const Ch *text)
{
std::string result;
while (*text)
{
if (*text < 0 || *text > (std::numeric_limits<char>::max)())
result += '*';
else
result += char(*text);
++text;
}
return result;
}
// Remove trailing and leading spaces
template<class Ch>
std::basic_string<Ch> trim(const std::basic_string<Ch> &s,
const std::locale &loc = std::locale())
{
typename std::basic_string<Ch>::const_iterator first = s.begin();
typename std::basic_string<Ch>::const_iterator end = s.end();
while (first != end && std::isspace(*first, loc))
++first;
if (first == end)
return std::basic_string<Ch>();
typename std::basic_string<Ch>::const_iterator last = end;
do --last; while (std::isspace(*last, loc));
if (first != s.begin() || last + 1 != end)
return std::basic_string<Ch>(first, last + 1);
else
return s;
}
} } }
#endif
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