/*

 *

 * Copyright (c) 2004

 * John Maddock

 *

 * Use, modification and distribution are subject to 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)

 *

 */

 /*

  *   LOCATION:    see http://www.boost.org for most recent version.

  *   FILE         icu.hpp

  *   VERSION      see <boost/version.hpp>

  *   DESCRIPTION: Unicode regular expressions on top of the ICU Library.

  */

#ifndef BOOST_REGEX_ICU_HPP

#define BOOST_REGEX_ICU_HPP

#include <unicode/utypes.h>

#include <unicode/uchar.h>

#include <unicode/coll.h>

#include <boost/regex.hpp>

#include <boost/regex/pending/unicode_iterator.hpp>

#include <boost/mpl/int_fwd.hpp>

#include <bitset>

namespace boost{

namespace re_detail{

// 

// Implementation details:

//

class BOOST_REGEX_DECL icu_regex_traits_implementation

{

   typedef UChar32                      char_type;

   typedef std::size_t                  size_type;

   typedef std::vector<char_type>       string_type;

   typedef U_NAMESPACE_QUALIFIER Locale locale_type;

   typedef boost::uint_least32_t        char_class_type;

public:

   icu_regex_traits_implementation(const U_NAMESPACE_QUALIFIER Locale& l)

      : m_locale(l)

   {

      UErrorCode success = U_ZERO_ERROR;

      m_collator.reset(U_NAMESPACE_QUALIFIER Collator::createInstance(l, success));

      if(U_SUCCESS(success) == 0)

         init_error();

      m_collator->setStrength(U_NAMESPACE_QUALIFIER Collator::IDENTICAL);

      success = U_ZERO_ERROR;

      m_primary_collator.reset(U_NAMESPACE_QUALIFIER Collator::createInstance(l, success));

      if(U_SUCCESS(success) == 0)

         init_error();

      m_primary_collator->setStrength(U_NAMESPACE_QUALIFIER Collator::PRIMARY);

   }

   U_NAMESPACE_QUALIFIER Locale getloc()const

   {

      return m_locale;

   }

   string_type do_transform(const char_type* p1, const char_type* p2, const U_NAMESPACE_QUALIFIER Collator* pcoll) const;

   string_type transform(const char_type* p1, const char_type* p2) const

   {

      return do_transform(p1, p2, m_collator.get());

   }

   string_type transform_primary(const char_type* p1, const char_type* p2) const

   {

      return do_transform(p1, p2, m_primary_collator.get());

   }

private:

   void init_error()

   {

      std::runtime_error e("Could not initialize ICU resources");

      boost::throw_exception(e);

   }

   U_NAMESPACE_QUALIFIER Locale m_locale;                                  // The ICU locale that we're using

   boost::scoped_ptr< U_NAMESPACE_QUALIFIER Collator> m_collator;          // The full collation object

   boost::scoped_ptr< U_NAMESPACE_QUALIFIER Collator> m_primary_collator;  // The primary collation object

};

inline boost::shared_ptr<icu_regex_traits_implementation> get_icu_regex_traits_implementation(const U_NAMESPACE_QUALIFIER Locale& loc)

{

   return boost::shared_ptr<icu_regex_traits_implementation>(new icu_regex_traits_implementation(loc));

}

}

class BOOST_REGEX_DECL icu_regex_traits

{

public:

   typedef UChar32                      char_type;

   typedef std::size_t                  size_type;

   typedef std::vector<char_type>       string_type;

   typedef U_NAMESPACE_QUALIFIER Locale locale_type;

#ifdef BOOST_NO_INT64_T

   typedef std::bitset<64>              char_class_type;

#else

   typedef boost::uint64_t              char_class_type;

#endif

   struct boost_extensions_tag{};

   icu_regex_traits()

      : m_pimpl(re_detail::get_icu_regex_traits_implementation(U_NAMESPACE_QUALIFIER Locale()))

   {

   }

   static size_type length(const char_type* p);

   ::boost::regex_constants::syntax_type syntax_type(char_type c)const

   {

      return ((c < 0x7f) && (c > 0)) ? re_detail::get_default_syntax_type(static_cast<char>(c)) : regex_constants::syntax_char;

   }

   ::boost::regex_constants::escape_syntax_type escape_syntax_type(char_type c) const

   {

      return ((c < 0x7f) && (c > 0)) ? re_detail::get_default_escape_syntax_type(static_cast<char>(c)) : regex_constants::syntax_char;

   }

   char_type translate(char_type c) const

   {

      return c;

   }

   char_type translate_nocase(char_type c) const

   {

      return ::u_tolower(c);

   }

   char_type translate(char_type c, bool icase) const

   {

      return icase ? translate_nocase(c) : translate(c);

   }

   char_type tolower(char_type c) const

   {

      return ::u_tolower(c);

   }

   char_type toupper(char_type c) const

   {

      return ::u_toupper(c);

   }

   string_type transform(const char_type* p1, const char_type* p2) const

   {

      return m_pimpl->transform(p1, p2);

   }

   string_type transform_primary(const char_type* p1, const char_type* p2) const

   {

      return m_pimpl->transform_primary(p1, p2);

   }

   char_class_type lookup_classname(const char_type* p1, const char_type* p2) const;

   string_type lookup_collatename(const char_type* p1, const char_type* p2) const;

   bool isctype(char_type c, char_class_type f) const;

   int toi(const char_type*& p1, const char_type* p2, int radix)const

   {

      return re_detail::global_toi(p1, p2, radix, *this);

   }

   int value(char_type c, int radix)const

   {

      return u_digit(c, static_cast< ::int8_t>(radix));

   }

   locale_type imbue(locale_type l)

   {

      locale_type result(m_pimpl->getloc());

      m_pimpl = re_detail::get_icu_regex_traits_implementation(l);

      return result;

   }

   locale_type getloc()const

   {

      return locale_type();

   }

   std::string error_string(::boost::regex_constants::error_type n) const

   {

      return re_detail::get_default_error_string(n);

   }

private:

   icu_regex_traits(const icu_regex_traits&);

   icu_regex_traits& operator=(const icu_regex_traits&);

   //

   // define the bitmasks offsets we need for additional character properties:

   //

   enum{

      offset_blank = U_CHAR_CATEGORY_COUNT,

      offset_space = U_CHAR_CATEGORY_COUNT+1,

      offset_xdigit = U_CHAR_CATEGORY_COUNT+2,

      offset_underscore = U_CHAR_CATEGORY_COUNT+3,

      offset_unicode = U_CHAR_CATEGORY_COUNT+4,

      offset_any = U_CHAR_CATEGORY_COUNT+5,

      offset_ascii = U_CHAR_CATEGORY_COUNT+6

   };

   //

   // and now the masks:

   //

   static const char_class_type mask_blank;

   static const char_class_type mask_space;

   static const char_class_type mask_xdigit;

   static const char_class_type mask_underscore;

   static const char_class_type mask_unicode;

   static const char_class_type mask_any;

   static const char_class_type mask_ascii;

   static char_class_type lookup_icu_mask(const ::UChar32* p1, const ::UChar32* p2);

   boost::shared_ptr< ::boost::re_detail::icu_regex_traits_implementation> m_pimpl;

};

} // namespace boost

//

// template instances:

//

#define BOOST_REGEX_CHAR_T UChar32

#undef BOOST_REGEX_TRAITS_T

#define BOOST_REGEX_TRAITS_T , icu_regex_traits

#define BOOST_REGEX_ICU_INSTANCES

#ifdef BOOST_REGEX_ICU_INSTANTIATE

#  define BOOST_REGEX_INSTANTIATE

#endif

#include <boost/regex/v4/instances.hpp>

#undef BOOST_REGEX_CHAR_T

#undef BOOST_REGEX_TRAITS_T

#undef BOOST_REGEX_ICU_INSTANCES

#ifdef BOOST_REGEX_INSTANTIATE

#  undef BOOST_REGEX_INSTANTIATE

#endif

namespace boost{

// types:

typedef basic_regex< ::UChar32, icu_regex_traits> u32regex;

typedef match_results<const ::UChar32*> u32match;

typedef match_results<const ::UChar*> u16match;

//

// Construction of 32-bit regex types from UTF-8 and UTF-16 primitives:

//

namespace re_detail{

#if !defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(__IBMCPP__)

template <class InputIterator>

inline u32regex do_make_u32regex(InputIterator i, 

                              InputIterator j, 

                              boost::regex_constants::syntax_option_type opt, 

                              const boost::mpl::int_<1>*)

{

   typedef boost::u8_to_u32_iterator<InputIterator, UChar32> conv_type;

   return u32regex(conv_type(i), conv_type(j), opt);

}

template <class InputIterator>

inline u32regex do_make_u32regex(InputIterator i, 

                              InputIterator j, 

                              boost::regex_constants::syntax_option_type opt, 

                              const boost::mpl::int_<2>*)

{

   typedef boost::u16_to_u32_iterator<InputIterator, UChar32> conv_type;

   return u32regex(conv_type(i), conv_type(j), opt);

}

template <class InputIterator>

inline u32regex do_make_u32regex(InputIterator i, 

                              InputIterator j, 

                              boost::regex_constants::syntax_option_type opt, 

                              const boost::mpl::int_<4>*)

{

   return u32regex(i, j, opt);

}

#else

template <class InputIterator>

inline u32regex do_make_u32regex(InputIterator i, 

                              InputIterator j, 

                              boost::regex_constants::syntax_option_type opt, 

                              const boost::mpl::int_<1>*)

{

   typedef boost::u8_to_u32_iterator<InputIterator, UChar32> conv_type;

   typedef std::vector<UChar32> vector_type;

   vector_type v;

   conv_type a(i), b(j);

   while(a != b)

   {

      v.push_back(*a);

      ++a;

   }

   if(v.size())

      return u32regex(&*v.begin(), v.size(), opt);

   return u32regex(static_cast<UChar32 const*>(0), static_cast<u32regex::size_type>(0), opt);

}

template <class InputIterator>

inline u32regex do_make_u32regex(InputIterator i, 

                              InputIterator j, 

                              boost::regex_constants::syntax_option_type opt, 

                              const boost::mpl::int_<2>*)

{

   typedef boost::u16_to_u32_iterator<InputIterator, UChar32> conv_type;

   typedef std::vector<UChar32> vector_type;

   vector_type v;

   conv_type a(i), b(j);

   while(a != b)

   {

      v.push_back(*a);

      ++a;

   }

   if(v.size())

      return u32regex(&*v.begin(), v.size(), opt);

   return u32regex(static_cast<UChar32 const*>(0), static_cast<u32regex::size_type>(0), opt);

}

template <class InputIterator>

inline u32regex do_make_u32regex(InputIterator i, 

                              InputIterator j, 

                              boost::regex_constants::syntax_option_type opt, 

                              const boost::mpl::int_<4>*)

{

   typedef std::vector<UCHAR32> vector_type;

   vector_type v;

   while(i != j)

   {

      v.push_back((UCHAR32)(*i));

      ++a;

   }

   if(v.size())

      return u32regex(&*v.begin(), v.size(), opt);

   return u32regex(static_cast<UChar32 const*>(0), static_cast<u32regex::size_type>(0), opt);

}

#endif

}

//

// Construction from an iterator pair:

//

template <class InputIterator>

inline u32regex make_u32regex(InputIterator i, 

                              InputIterator j, 

                              boost::regex_constants::syntax_option_type opt)

{

   return re_detail::do_make_u32regex(i, j, opt, static_cast<boost::mpl::int_<sizeof(*i)> const*>(0));

}

//

// construction from UTF-8 nul-terminated strings:

//

inline u32regex make_u32regex(const char* p, boost::regex_constants::syntax_option_type opt = boost::regex_constants::perl)

{

   return re_detail::do_make_u32regex(p, p + std::strlen(p), opt, static_cast<boost::mpl::int_<1> const*>(0));

}

inline u32regex make_u32regex(const unsigned char* p, boost::regex_constants::syntax_option_type opt = boost::regex_constants::perl)

{

   return re_detail::do_make_u32regex(p, p + std::strlen(reinterpret_cast<const char*>(p)), opt, static_cast<boost::mpl::int_<1> const*>(0));

}

//

// construction from UTF-16 nul-terminated strings:

//

#ifndef BOOST_NO_WREGEX

inline u32regex make_u32regex(const wchar_t* p, boost::regex_constants::syntax_option_type opt = boost::regex_constants::perl)

{

   return re_detail::do_make_u32regex(p, p + std::wcslen(p), opt, static_cast<boost::mpl::int_<sizeof(wchar_t)> const*>(0));

}

#endif

#ifndef U_WCHAR_IS_UTF16

inline u32regex make_u32regex(const UChar* p, boost::regex_constants::syntax_option_type opt = boost::regex_constants::perl)

{

   return re_detail::do_make_u32regex(p, p + u_strlen(p), opt, static_cast<boost::mpl::int_<2> const*>(0));

}

#endif

//

// construction from basic_string class-template:

//

template<class C, class T, class A>

inline u32regex make_u32regex(const std::basic_string<C, T, A>& s, boost::regex_constants::syntax_option_type opt = boost::regex_constants::perl)

{

   return re_detail::do_make_u32regex(s.begin(), s.end(), opt, static_cast<boost::mpl::int_<sizeof(C)> const*>(0));

}

//

// Construction from ICU string type:

//

inline u32regex make_u32regex(const UnicodeString& s, boost::regex_constants::syntax_option_type opt = boost::regex_constants::perl)

{

   return re_detail::do_make_u32regex(s.getBuffer(), s.getBuffer() + s.length(), opt, static_cast<boost::mpl::int_<2> const*>(0));

}

//

// regex_match overloads that widen the character type as appropriate:

//

namespace re_detail{

template<class MR1, class MR2>

void copy_results(MR1& out, MR2 const& in)

{

   // copy results from an adapted MR2 match_results:

   out.set_size(in.size(), in.prefix().first.base(), in.suffix().second.base());

   out.set_base(in.base().base());

   for(int i = 0; i < (int)in.size(); ++i)

   {

      if(in[i].matched)

      {

         out.set_first(in[i].first.base(), i);

         out.set_second(in[i].second.base(), i);

      }

   }

}

template <class BidiIterator, class Allocator>

inline bool do_regex_match(BidiIterator first, BidiIterator last, 

                 match_results<BidiIterator, Allocator>& m, 

                 const u32regex& e, 

                 match_flag_type flags,

                 boost::mpl::int_<4> const*)

{

   return ::boost::regex_match(first, last, m, e, flags);

}

template <class BidiIterator, class Allocator>

bool do_regex_match(BidiIterator first, BidiIterator last, 

                 match_results<BidiIterator, Allocator>& m, 

                 const u32regex& e, 

                 match_flag_type flags,

                 boost::mpl::int_<2> const*)

{

   typedef u16_to_u32_iterator<BidiIterator, UChar32> conv_type;

   typedef match_results<conv_type>                   match_type;

   typedef typename match_type::allocator_type        alloc_type;

   match_type what;

   bool result = ::boost::regex_match(conv_type(first), conv_type(last), what, e, flags);

   // copy results across to m:

   if(result) copy_results(m, what);

   return result;

}

template <class BidiIterator, class Allocator>

bool do_regex_match(BidiIterator first, BidiIterator last, 

                 match_results<BidiIterator, Allocator>& m, 

                 const u32regex& e, 

                 match_flag_type flags,

                 boost::mpl::int_<1> const*)

{

   typedef u8_to_u32_iterator<BidiIterator, UChar32>  conv_type;

   typedef match_results<conv_type>                   match_type;

   typedef typename match_type::allocator_type        alloc_type;

   match_type what;

   bool result = ::boost::regex_match(conv_type(first), conv_type(last), what, e, flags);

   // copy results across to m:

   if(result) copy_results(m, what);

   return result;

}

} // namespace re_detail

template <class BidiIterator, class Allocator>

inline bool u32regex_match(BidiIterator first, BidiIterator last, 

                 match_results<BidiIterator, Allocator>& m, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   return re_detail::do_regex_match(first, last, m, e, flags, static_cast<mpl::int_<sizeof(*first)> const*>(0));

}

inline bool u32regex_match(const UChar* p, 

                 match_results<const UChar*>& m, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   return re_detail::do_regex_match(p, p+u_strlen(p), m, e, flags, static_cast<mpl::int_<2> const*>(0));

}

#if !defined(U_WCHAR_IS_UTF16) && !defined(BOOST_NO_WREGEX)

inline bool u32regex_match(const wchar_t* p, 

                 match_results<const wchar_t*>& m, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   return re_detail::do_regex_match(p, p+std::wcslen(p), m, e, flags, static_cast<mpl::int_<sizeof(wchar_t)> const*>(0));

}

#endif

inline bool u32regex_match(const char* p, 

                 match_results<const char*>& m, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   return re_detail::do_regex_match(p, p+std::strlen(p), m, e, flags, static_cast<mpl::int_<1> const*>(0));

}

inline bool u32regex_match(const unsigned char* p, 

                 match_results<const unsigned char*>& m, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   return re_detail::do_regex_match(p, p+std::strlen((const char*)p), m, e, flags, static_cast<mpl::int_<1> const*>(0));

}

inline bool u32regex_match(const std::string& s, 

                        match_results<std::string::const_iterator>& m, 

                        const u32regex& e, 

                        match_flag_type flags = match_default)

{

   return re_detail::do_regex_match(s.begin(), s.end(), m, e, flags, static_cast<mpl::int_<1> const*>(0));

}

#ifndef BOOST_NO_STD_WSTRING

inline bool u32regex_match(const std::wstring& s, 

                        match_results<std::wstring::const_iterator>& m, 

                        const u32regex& e, 

                        match_flag_type flags = match_default)

{

   return re_detail::do_regex_match(s.begin(), s.end(), m, e, flags, static_cast<mpl::int_<sizeof(wchar_t)> const*>(0));

}

#endif

inline bool u32regex_match(const UnicodeString& s, 

                        match_results<const UChar*>& m, 

                        const u32regex& e, 

                        match_flag_type flags = match_default)

{

   return re_detail::do_regex_match(s.getBuffer(), s.getBuffer() + s.length(), m, e, flags, static_cast<mpl::int_<sizeof(wchar_t)> const*>(0));

}

//

// regex_match overloads that do not return what matched:

//

template <class BidiIterator>

inline bool u32regex_match(BidiIterator first, BidiIterator last, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   match_results<BidiIterator> m;

   return re_detail::do_regex_match(first, last, m, e, flags, static_cast<mpl::int_<sizeof(*first)> const*>(0));

}

inline bool u32regex_match(const UChar* p, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   match_results<const UChar*> m;

   return re_detail::do_regex_match(p, p+u_strlen(p), m, e, flags, static_cast<mpl::int_<2> const*>(0));

}

#if !defined(U_WCHAR_IS_UTF16) && !defined(BOOST_NO_WREGEX)

inline bool u32regex_match(const wchar_t* p, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   match_results<const wchar_t*> m;

   return re_detail::do_regex_match(p, p+std::wcslen(p), m, e, flags, static_cast<mpl::int_<sizeof(wchar_t)> const*>(0));

}

#endif

inline bool u32regex_match(const char* p, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   match_results<const char*> m;

   return re_detail::do_regex_match(p, p+std::strlen(p), m, e, flags, static_cast<mpl::int_<1> const*>(0));

}

inline bool u32regex_match(const unsigned char* p, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   match_results<const unsigned char*> m;

   return re_detail::do_regex_match(p, p+std::strlen((const char*)p), m, e, flags, static_cast<mpl::int_<1> const*>(0));

}

inline bool u32regex_match(const std::string& s, 

                        const u32regex& e, 

                        match_flag_type flags = match_default)

{

   match_results<std::string::const_iterator> m;

   return re_detail::do_regex_match(s.begin(), s.end(), m, e, flags, static_cast<mpl::int_<1> const*>(0));

}

#ifndef BOOST_NO_STD_WSTRING

inline bool u32regex_match(const std::wstring& s, 

                        const u32regex& e, 

                        match_flag_type flags = match_default)

{

   match_results<std::wstring::const_iterator> m;

   return re_detail::do_regex_match(s.begin(), s.end(), m, e, flags, static_cast<mpl::int_<sizeof(wchar_t)> const*>(0));

}

#endif

inline bool u32regex_match(const UnicodeString& s, 

                        const u32regex& e, 

                        match_flag_type flags = match_default)

{

   match_results<const UChar*> m;

   return re_detail::do_regex_match(s.getBuffer(), s.getBuffer() + s.length(), m, e, flags, static_cast<mpl::int_<sizeof(wchar_t)> const*>(0));

}

//

// regex_search overloads that widen the character type as appropriate:

//

namespace re_detail{

template <class BidiIterator, class Allocator>

inline bool do_regex_search(BidiIterator first, BidiIterator last, 

                 match_results<BidiIterator, Allocator>& m, 

                 const u32regex& e, 

                 match_flag_type flags,

                 BidiIterator base,

                 boost::mpl::int_<4> const*)

{

   return ::boost::regex_search(first, last, m, e, flags, base);

}

template <class BidiIterator, class Allocator>

bool do_regex_search(BidiIterator first, BidiIterator last, 

                 match_results<BidiIterator, Allocator>& m, 

                 const u32regex& e, 

                 match_flag_type flags,

                 BidiIterator base,

                 boost::mpl::int_<2> const*)

{

   typedef u16_to_u32_iterator<BidiIterator, UChar32> conv_type;

   typedef match_results<conv_type>                   match_type;

   typedef typename match_type::allocator_type        alloc_type;

   match_type what;

   bool result = ::boost::regex_search(conv_type(first), conv_type(last), what, e, flags, conv_type(base));

   // copy results across to m:

   if(result) copy_results(m, what);

   return result;

}

template <class BidiIterator, class Allocator>

bool do_regex_search(BidiIterator first, BidiIterator last, 

                 match_results<BidiIterator, Allocator>& m, 

                 const u32regex& e, 

                 match_flag_type flags,

                 BidiIterator base,

                 boost::mpl::int_<1> const*)

{

   typedef u8_to_u32_iterator<BidiIterator, UChar32>  conv_type;

   typedef match_results<conv_type>                   match_type;

   typedef typename match_type::allocator_type        alloc_type;

   match_type what;

   bool result = ::boost::regex_search(conv_type(first), conv_type(last), what, e, flags, conv_type(base));

   // copy results across to m:

   if(result) copy_results(m, what);

   return result;

}

}

template <class BidiIterator, class Allocator>

inline bool u32regex_search(BidiIterator first, BidiIterator last, 

                 match_results<BidiIterator, Allocator>& m, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   return re_detail::do_regex_search(first, last, m, e, flags, first, static_cast<mpl::int_<sizeof(*first)> const*>(0));

}

template <class BidiIterator, class Allocator>

inline bool u32regex_search(BidiIterator first, BidiIterator last, 

                 match_results<BidiIterator, Allocator>& m, 

                 const u32regex& e, 

                 match_flag_type flags,

                 BidiIterator base)

{

   return re_detail::do_regex_search(first, last, m, e, flags, base, static_cast<mpl::int_<sizeof(*first)> const*>(0));

}

inline bool u32regex_search(const UChar* p, 

                 match_results<const UChar*>& m, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   return re_detail::do_regex_search(p, p+u_strlen(p), m, e, flags, p, static_cast<mpl::int_<2> const*>(0));

}

#if !defined(U_WCHAR_IS_UTF16) && !defined(BOOST_NO_WREGEX)

inline bool u32regex_search(const wchar_t* p, 

                 match_results<const wchar_t*>& m, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   return re_detail::do_regex_search(p, p+std::wcslen(p), m, e, flags, p, static_cast<mpl::int_<sizeof(wchar_t)> const*>(0));

}

#endif

inline bool u32regex_search(const char* p, 

                 match_results<const char*>& m, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   return re_detail::do_regex_search(p, p+std::strlen(p), m, e, flags, p, static_cast<mpl::int_<1> const*>(0));

}

inline bool u32regex_search(const unsigned char* p, 

                 match_results<const unsigned char*>& m, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   return re_detail::do_regex_search(p, p+std::strlen((const char*)p), m, e, flags, p, static_cast<mpl::int_<1> const*>(0));

}

inline bool u32regex_search(const std::string& s, 

                        match_results<std::string::const_iterator>& m, 

                        const u32regex& e, 

                        match_flag_type flags = match_default)

{

   return re_detail::do_regex_search(s.begin(), s.end(), m, e, flags, s.begin(), static_cast<mpl::int_<1> const*>(0));

}

#ifndef BOOST_NO_STD_WSTRING

inline bool u32regex_search(const std::wstring& s, 

                        match_results<std::wstring::const_iterator>& m, 

                        const u32regex& e, 

                        match_flag_type flags = match_default)

{

   return re_detail::do_regex_search(s.begin(), s.end(), m, e, flags, s.begin(), static_cast<mpl::int_<sizeof(wchar_t)> const*>(0));

}

#endif

inline bool u32regex_search(const UnicodeString& s, 

                        match_results<const UChar*>& m, 

                        const u32regex& e, 

                        match_flag_type flags = match_default)

{

   return re_detail::do_regex_search(s.getBuffer(), s.getBuffer() + s.length(), m, e, flags, s.getBuffer(), static_cast<mpl::int_<sizeof(wchar_t)> const*>(0));

}

template <class BidiIterator>

inline bool u32regex_search(BidiIterator first, BidiIterator last, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   match_results<BidiIterator> m;

   return re_detail::do_regex_search(first, last, m, e, flags, first, static_cast<mpl::int_<sizeof(*first)> const*>(0));

}

inline bool u32regex_search(const UChar* p, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   match_results<const UChar*> m;

   return re_detail::do_regex_search(p, p+u_strlen(p), m, e, flags, p, static_cast<mpl::int_<2> const*>(0));

}

#if !defined(U_WCHAR_IS_UTF16) && !defined(BOOST_NO_WREGEX)

inline bool u32regex_search(const wchar_t* p, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   match_results<const wchar_t*> m;

   return re_detail::do_regex_search(p, p+std::wcslen(p), m, e, flags, p, static_cast<mpl::int_<sizeof(wchar_t)> const*>(0));

}

#endif

inline bool u32regex_search(const char* p, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   match_results<const char*> m;

   return re_detail::do_regex_search(p, p+std::strlen(p), m, e, flags, p, static_cast<mpl::int_<1> const*>(0));

}

inline bool u32regex_search(const unsigned char* p, 

                 const u32regex& e, 

                 match_flag_type flags = match_default)

{

   match_results<const unsigned char*> m;

   return re_detail::do_regex_search(p, p+std::strlen((const char*)p), m, e, flags, p, static_cast<mpl::int_<1> const*>(0));

}

inline bool u32regex_search(const std::string& s, 

                        const u32regex& e, 

                        match_flag_type flags = match_default)

{

   match_results<std::string::const_iterator> m;

   return re_detail::do_regex_search(s.begin(), s.end(), m, e, flags, s.begin(), static_cast<mpl::int_<1> const*>(0));

}

#ifndef BOOST_NO_STD_WSTRING

inline bool u32regex_search(const std::wstring& s, 

                        const u32regex& e, 

                        match_flag_type flags = match_default)

{

   match_results<std::wstring::const_iterator> m;

   return re_detail::do_regex_search(s.begin(), s.end(), m, e, flags, s.begin(), static_cast<mpl::int_<sizeof(wchar_t)> const*>(0));

}

#endif

inline bool u32regex_search(const UnicodeString& s, 

                        const u32regex& e, 

                        match_flag_type flags = match_default)

{

   match_results<const UChar*> m;

   return re_detail::do_regex_search(s.getBuffer(), s.getBuffer() + s.length(), m, e, flags, s.getBuffer(), static_cast<mpl::int_<sizeof(wchar_t)> const*>(0));

}

//

// overloads for regex_replace with utf-8 and utf-16 data types:

//

namespace re_detail{

template <class I>

inline std::pair< boost::u8_to_u32_iterator<I>, boost::u8_to_u32_iterator<I> >

   make_utf32_seq(I i, I j, mpl::int_<1> const*)

{

   return std::pair< boost::u8_to_u32_iterator<I>, boost::u8_to_u32_iterator<I> >(boost::u8_to_u32_iterator<I>(i), boost::u8_to_u32_iterator<I>(j));

}

template <class I>

inline std::pair< boost::u16_to_u32_iterator<I>, boost::u16_to_u32_iterator<I> >

   make_utf32_seq(I i, I j, mpl::int_<2> const*)

{

   return std::pair< boost::u16_to_u32_iterator<I>, boost::u16_to_u32_iterator<I> >(boost::u16_to_u32_iterator<I>(i), boost::u16_to_u32_iterator<I>(j));

}

template <class I>

inline std::pair< I, I >

   make_utf32_seq(I i, I j, mpl::int_<4> const*)

{

   return std::pair< I, I >(i, j);

}

template <class charT>

inline std::pair< boost::u8_to_u32_iterator<const charT*>, boost::u8_to_u32_iterator<const charT*> >

   make_utf32_seq(const charT* p, mpl::int_<1> const*)

{

   return std::pair< boost::u8_to_u32_iterator<const charT*>, boost::u8_to_u32_iterator<const charT*> >(boost::u8_to_u32_iterator<const charT*>(p), boost::u8_to_u32_iterator<const charT*>(p+std::strlen((const char*)p)));

}

template <class charT>

inline std::pair< boost::u16_to_u32_iterator<const charT*>, boost::u16_to_u32_iterator<const charT*> >

   make_utf32_seq(const charT* p, mpl::int_<2> const*)

{

   return std::pair< boost::u16_to_u32_iterator<const charT*>, boost::u16_to_u32_iterator<const charT*> >(boost::u16_to_u32_iterator<const charT*>(p), boost::u16_to_u32_iterator<const charT*>(p+u_strlen((const UChar*)p)));

}

template <class charT>

inline std::pair< const charT*, const charT* >

   make_utf32_seq(const charT* p, mpl::int_<4> const*)

{

   return std::pair< const charT*, const charT* >(p, p+icu_regex_traits::length((UChar32 const*)p));

}

template <class OutputIterator>

inline OutputIterator make_utf32_out(OutputIterator o, mpl::int_<4> const*)

{

   return o;

}

template <class OutputIterator>

inline utf16_output_iterator<OutputIterator> make_utf32_out(OutputIterator o, mpl::int_<2> const*)

{

   return o;

}

template <class OutputIterator>

inline utf8_output_iterator<OutputIterator> make_utf32_out(OutputIterator o, mpl::int_<1> const*)

{

   return o;

}

template <class OutputIterator, class I1, class I2>

OutputIterator do_regex_replace(OutputIterator out,

                                 std::pair<I1, I1> const& in,

                                 const u32regex& e, 

                                 const std::pair<I2, I2>& fmt, 

                                 match_flag_type flags

                                 )

{

   // unfortunately we have to copy the format string in order to pass in onward:

   std::vector<UChar32> f;

#ifndef BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS

   f.assign(fmt.first, fmt.second);

#else

   f.clear();

   I2 pos = fmt.first;

   while(pos != fmt.second)

      f.push_back(*pos++);

#endif

   regex_iterator<I1, UChar32, icu_regex_traits> i(in.first, in.second, e, flags);

   regex_iterator<I1, UChar32, icu_regex_traits> j;

   if(i == j)

   {

      if(!(flags & regex_constants::format_no_copy))

         out = re_detail::copy(in.first, in.second, out);

   }

   else

   {

      I1 last_m = in.first;

      while(i != j)

      {

         if(!(flags & regex_constants::format_no_copy))

            out = re_detail::copy(i->prefix().first, i->prefix().second, out); 

         if(f.size())

            out = ::boost::re_detail::regex_format_imp(out, *i, &*f.begin(), &*f.begin() + f.size(), flags, e.get_traits());

         else

            out = ::boost::re_detail::regex_format_imp(out, *i, static_cast<UChar32 const*>(0), static_cast<UChar32 const*>(0), flags, e.get_traits());

         last_m = (*i)[0].second;

         if(flags & regex_constants::format_first_only)

            break;

         ++i;

      }

      if(!(flags & regex_constants::format_no_copy))

         out = re_detail::copy(last_m, in.second, out);

   }

   return out;

}

template <class BaseIterator>

inline const BaseIterator& extract_output_base(const BaseIterator& b)

{

   return b;

}

template <class BaseIterator>

inline BaseIterator extract_output_base(const utf8_output_iterator<BaseIterator>& b)

{

   return b.base();

}

template <class BaseIterator>

inline BaseIterator extract_output_base(const utf16_output_iterator<BaseIterator>& b)

{

   return b.base();

}

}  // re_detail

template <class OutputIterator, class BidirectionalIterator, class charT>

inline OutputIterator u32regex_replace(OutputIterator out,

                         BidirectionalIterator first,

                         BidirectionalIterator last,

                         const u32regex& e, 

                         const charT* fmt, 

                         match_flag_type flags = match_default)

{

   return re_detail::extract_output_base

#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)

   <OutputIterator>

#endif

    (

      re_detail::do_regex_replace(

         re_detail::make_utf32_out(out, static_cast<mpl::int_<sizeof(*first)> const*>(0)),

         re_detail::make_utf32_seq(first, last, static_cast<mpl::int_<sizeof(*first)> const*>(0)),

         e,

         re_detail::make_utf32_seq(fmt, static_cast<mpl::int_<sizeof(*fmt)> const*>(0)),

         flags)

      );

}

template <class OutputIterator, class Iterator, class charT>

inline OutputIterator u32regex_replace(OutputIterator out,

                         Iterator first,

                         Iterator last,

                         const u32regex& e, 

                         const std::basic_string<charT>& fmt,

                         match_flag_type flags = match_default)

{

   return re_detail::extract_output_base

#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)

   <OutputIterator>

#endif

    (

      re_detail::do_regex_replace(

         re_detail::make_utf32_out(out, static_cast<mpl::int_<sizeof(*first)> const*>(0)),

         re_detail::make_utf32_seq(first, last, static_cast<mpl::int_<sizeof(*first)> const*>(0)),

         e,

         re_detail::make_utf32_seq(fmt.begin(), fmt.end(), static_cast<mpl::int_<sizeof(charT)> const*>(0)),

         flags)

      );

}

template <class OutputIterator, class Iterator>

inline OutputIterator u32regex_replace(OutputIterator out,

                         Iterator first,

                         Iterator last,

                         const u32regex& e, 

                         const UnicodeString& fmt,

                         match_flag_type flags = match_default)

{

   return re_detail::extract_output_base

#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)

   <OutputIterator>

#endif

   (

      re_detail::do_regex_replace(

         re_detail::make_utf32_out(out, static_cast<mpl::int_<sizeof(*first)> const*>(0)),

         re_detail::make_utf32_seq(first, last, static_cast<mpl::int_<sizeof(*first)> const*>(0)),

         e,

         re_detail::make_utf32_seq(fmt.getBuffer(), fmt.getBuffer() + fmt.length(), static_cast<mpl::int_<2> const*>(0)),

         flags)

      );

}

template <class charT>

std::basic_string<charT> u32regex_replace(const std::basic_string<charT>& s,

                         const u32regex& e, 

                         const charT* fmt,

                         match_flag_type flags = match_default)

{

   std::basic_string<charT> result;

   re_detail::string_out_iterator<std::basic_string<charT> > i(result);

   u32regex_replace(i, s.begin(), s.end(), e, fmt, flags);

   return result;

}

template <class charT>

std::basic_string<charT> u32regex_replace(const std::basic_string<charT>& s,

                         const u32regex& e, 

                         const std::basic_string<charT>& fmt,

                         match_flag_type flags = match_default)

{

   std::basic_string<charT> result;

   re_detail::string_out_iterator<std::basic_string<charT> > i(result);

   u32regex_replace(i, s.begin(), s.end(), e, fmt.c_str(), flags);

   return result;

}

namespace re_detail{

class unicode_string_out_iterator

{

   UnicodeString* out;

public:

   unicode_string_out_iterator(UnicodeString& s) : out(&s) {}

   unicode_string_out_iterator& operator++() { return *this; }

   unicode_string_out_iterator& operator++(int) { return *this; }

   unicode_string_out_iterator& operator*() { return *this; }

   unicode_string_out_iterator& operator=(UChar v) 

   { 

      *out += v; 

      return *this; 

   }

   typedef std::ptrdiff_t difference_type;

   typedef UChar value_type;

   typedef value_type* pointer;

   typedef value_type& reference;

   typedef std::output_iterator_tag iterator_category;

};

}

inline UnicodeString u32regex_replace(const UnicodeString& s,

                         const u32regex& e, 

                         const UChar* fmt,

                         match_flag_type flags = match_default)

{

   UnicodeString result;

   re_detail::unicode_string_out_iterator i(result);

   u32regex_replace(i, s.getBuffer(), s.getBuffer()+s.length(), e, fmt, flags);

   return result;

}