| // ---------------------------------------------------------------------------- |
| // 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 |