regex_traits.hpp

boost库提供标准的C++ API 配合dev c++使用,功能更加强大

   }

   static int BOOST_REGEX_CALL toi(unsigned short c)
   { 
      return c_regex_traits<regex_wchar_type>::toi(c); 
   }
   static int BOOST_REGEX_CALL toi(const unsigned short*& first, const unsigned short* last, int radix)
   { 
      return c_regex_traits<regex_wchar_type>::toi(
         reinterpret_cast<const regex_wchar_type*&>(first), 
         reinterpret_cast<const regex_wchar_type*>(last), 
         radix); 
   }

   static boost::uint_fast32_t BOOST_REGEX_CALL lookup_classname(const unsigned short* first, const unsigned short* last)
   {
      return c_regex_traits<regex_wchar_type>::lookup_classname(
         reinterpret_cast<const regex_wchar_type*>(first), 
         reinterpret_cast<const regex_wchar_type*>(last));
   }

   static bool BOOST_REGEX_CALL lookup_collatename(std::basic_string<unsigned short>& s, const unsigned short* first, const unsigned short* last)
   {
      return c_regex_traits<regex_wchar_type>::lookup_collatename(
         reinterpret_cast<std::basic_string<regex_wchar_type>&>(s), 
         reinterpret_cast<const regex_wchar_type*>(first), 
         reinterpret_cast<const regex_wchar_type*>(last));
   }

   static locale_type BOOST_REGEX_CALL imbue(locale_type l){ return l; }
   locale_type BOOST_REGEX_CALL getloc()const{ return locale_type(); }

   struct sentry
   {
      sentry(const c_regex_traits<unsigned short>&)
      { c_regex_traits<unsigned short>::update(); }
      ~sentry(){}
      operator void*() { return this; }
   };
   static void BOOST_REGEX_CALL update()
   { 
      c_regex_traits<regex_wchar_type>::update(); 
   }
   void swap(c_regex_traits&){}
   c_regex_traits(){};
   ~c_regex_traits(){};
   static std::size_t BOOST_REGEX_CALL strnarrow(char *s1, std::size_t len, const unsigned short *s2)
   { 
      return c_regex_traits<regex_wchar_type>::strnarrow(
         s1, 
         len, 
         reinterpret_cast<const regex_wchar_type *>(s2)); 
   }
   static std::size_t BOOST_REGEX_CALL strwiden(unsigned short *s1, std::size_t len, const char *s2)
   { 
      return c_regex_traits<regex_wchar_type>::strwiden(
         reinterpret_cast<regex_wchar_type *>(s1), len, s2); 
   }

private:
   c_regex_traits<regex_wchar_type> m_init;

};

#endif // BOOST_REGEX_HAS_SHORT_WCHAR_T

#endif // wide characters

#if defined(_WIN32) && !defined(BOOST_REGEX_NO_W32)

namespace re_detail{

struct BOOST_REGEX_DECL w32_traits_base : public regex_traits_base
{
   enum{
   char_class_none = 0,
   char_class_alnum = C1_ALPHA | C1_DIGIT,
   char_class_alpha = C1_ALPHA,
   char_class_cntrl = C1_CNTRL,
   char_class_digit = C1_DIGIT,
   char_class_graph = C1_UPPER | C1_LOWER | C1_DIGIT | C1_PUNCT | C1_ALPHA,
   char_class_lower = C1_LOWER,
   char_class_print = C1_UPPER | C1_LOWER | C1_DIGIT | C1_PUNCT | C1_BLANK | C1_ALPHA,
   char_class_punct = C1_PUNCT,
   char_class_space = C1_SPACE,
   char_class_upper = C1_UPPER,
   char_class_xdigit = C1_XDIGIT,
   char_class_blank = C1_BLANK,
   char_class_underscore = 0x4000,
   char_class_word = C1_ALPHA | C1_DIGIT | char_class_underscore,
   char_class_unicode = 0x8000,
   char_class_win = 0x01FF
   };


public:
   static std::string BOOST_REGEX_CALL set_message_catalogue(const std::string& s);
protected:
   static char regex_message_catalogue[BOOST_REGEX_MAX_PATH];
   enum syntax_map_size
   {
      map_size = UCHAR_MAX + 1
   };

   static unsigned char syntax_map[map_size];
   static unsigned short class_map[map_size];
   static char lower_case_map[map_size];

   static boost::uint_fast32_t BOOST_REGEX_CALL do_lookup_class(const char* p);
   static bool BOOST_REGEX_CALL do_lookup_collate(std::string& buf, const char* p);
   static void BOOST_REGEX_CALL do_free();
   static void BOOST_REGEX_CALL do_init();
public:
   static std::string BOOST_REGEX_CALL error_string(unsigned id);
   static char* BOOST_REGEX_CALL get_catalogue() { return regex_message_catalogue; }
};


} // namespace re_detail

template<class charT>
class w32_regex_traits;

template<>
class BOOST_REGEX_DECL w32_regex_traits<char> : public re_detail::w32_traits_base
{
   typedef re_detail::w32_traits_base base_type;
public:
   typedef char char_type;
   typedef unsigned char uchar_type;
   typedef unsigned int size_type;
   typedef std::string string_type;
   typedef int locale_type;

   static std::size_t BOOST_REGEX_CALL length(const char_type* p)
   {
      return std::strlen(p);
   }
   static unsigned int BOOST_REGEX_CALL syntax_type(size_type c)
   {
      return syntax_map[c];
   }
   static char BOOST_REGEX_CALL translate(char c, bool icase)
   {
      return icase ? lower_case_map[(size_type)(uchar_type)c] : c;
   }
   static void BOOST_REGEX_CALL transform(std::string& out, const std::string& in);

   static void BOOST_REGEX_CALL transform_primary(std::string& out, const std::string& in);

   static bool BOOST_REGEX_CALL is_separator(char c)
   {
      return BOOST_REGEX_MAKE_BOOL((c == '\n') || (c == '\r'));
   }

   static bool BOOST_REGEX_CALL is_combining(char)
   {
      return false;
   }
   
   static bool BOOST_REGEX_CALL is_class(char c, boost::uint_fast32_t f)
   {
      return BOOST_REGEX_MAKE_BOOL(class_map[(size_type)(uchar_type)c] & f);
   }

   static int BOOST_REGEX_CALL toi(char c);
   static int BOOST_REGEX_CALL toi(const char*& first, const char* last, int radix);

   static boost::uint_fast32_t BOOST_REGEX_CALL lookup_classname(const char* first, const char* last)
   {
      std::string s(first, last);
      return do_lookup_class(s.c_str());
   }

   static bool BOOST_REGEX_CALL lookup_collatename(std::string& buf, const char* first, const char* last)
   {
      std::string s(first, last);
      return do_lookup_collate(buf, s.c_str());
   }

   static locale_type BOOST_REGEX_CALL imbue(locale_type l){ return l; }
   locale_type BOOST_REGEX_CALL getloc()const{ return locale_type(); }

   struct sentry
   {
      sentry(const w32_regex_traits<char>&)
      { w32_regex_traits<char>::update(); }
      ~sentry(){}
      operator void*() { return this; }
   };
   static void BOOST_REGEX_CALL update();
   void swap(w32_regex_traits&){}
   w32_regex_traits();
   ~w32_regex_traits();
private:
   static w32_regex_traits<char> i;
};

#ifndef BOOST_NO_WREGEX
template<>
class BOOST_REGEX_DECL w32_regex_traits<regex_wchar_type> : public re_detail::w32_traits_base
{
   typedef re_detail::w32_traits_base base_type;
public:
   typedef regex_wchar_type char_type;
   typedef unsigned short uchar_type;
   typedef unsigned int size_type;
   typedef std::basic_string<regex_wchar_type> string_type;
   typedef int locale_type; 
#ifndef BOOST_REGEX_HAS_SHORT_WCHAR_T
   static std::size_t BOOST_REGEX_CALL length(const char_type* p)
   {
      return std::wcslen(p);
   }
#else
   static std::size_t BOOST_REGEX_CALL length(const char_type* p)
   {
      return std::wcslen(reinterpret_cast<const wchar_t*>(p));
   }
#endif
   static unsigned int BOOST_REGEX_CALL syntax_type(size_type c);
   static regex_wchar_type BOOST_REGEX_CALL translate(regex_wchar_type c, bool icase)
   {
      return icase ? ((c < 256) ? re_detail::wide_lower_case_map[(uchar_type)c] : wtolower(c)) : c;
   }

   static void BOOST_REGEX_CALL transform(std::basic_string<regex_wchar_type>& out, const std::basic_string<regex_wchar_type>& in);

   static void BOOST_REGEX_CALL transform_primary(std::basic_string<regex_wchar_type>& out, const std::basic_string<regex_wchar_type>& in);

   static bool BOOST_REGEX_CALL is_separator(regex_wchar_type c)
   {
      return BOOST_REGEX_MAKE_BOOL((c == L'\n') || (c == L'\r') || (c == (regex_wchar_type)0x2028) || (c == (regex_wchar_type)0x2029));
   }

   static bool BOOST_REGEX_CALL is_combining(regex_wchar_type c)
   { return re_detail::is_combining(c); }
   
   static bool BOOST_REGEX_CALL is_class(regex_wchar_type c, boost::uint_fast32_t f)
   {
      return BOOST_REGEX_MAKE_BOOL(((uchar_type)c < 256) ? (wide_unicode_classes[(size_type)(uchar_type)c] & f) : do_iswclass(c, f));
   }

   static int BOOST_REGEX_CALL toi(regex_wchar_type c);
   static int BOOST_REGEX_CALL toi(const regex_wchar_type*& first, const regex_wchar_type* last, int radix);

   static boost::uint_fast32_t BOOST_REGEX_CALL lookup_classname(const regex_wchar_type* first, const regex_wchar_type* last);

   static bool BOOST_REGEX_CALL lookup_collatename(std::basic_string<regex_wchar_type>& s, const regex_wchar_type* first, const regex_wchar_type* last);

   static locale_type BOOST_REGEX_CALL imbue(locale_type l){ return l; }
   locale_type BOOST_REGEX_CALL getloc()const{ return locale_type(); }

   struct sentry
   {
      sentry(const w32_regex_traits<regex_wchar_type>&)
      { w32_regex_traits<regex_wchar_type>::update(); }
      ~sentry(){}
      operator void*() { return this; }
   };
   static void BOOST_REGEX_CALL update();
   void swap(w32_regex_traits&){}
   w32_regex_traits();
   ~w32_regex_traits();
   static std::size_t BOOST_REGEX_CALL strnarrow(char *s1, std::size_t len, const regex_wchar_type *s2);
   static std::size_t BOOST_REGEX_CALL strwiden(regex_wchar_type *s1, std::size_t len, const char *s2);

private:
   static bool BOOST_REGEX_CALL do_iswclass(regex_wchar_type c, boost::uint_fast32_t f);
   static bool BOOST_REGEX_CALL do_lookup_collate(std::basic_string<regex_wchar_type>& out, const regex_wchar_type* first, const regex_wchar_type* last);
   static w32_regex_traits<regex_wchar_type> init_;
   static regex_wchar_type BOOST_REGEX_CALL wtolower(regex_wchar_type c);
   static unsigned short wide_unicode_classes[];
};

#ifdef BOOST_REGEX_HAS_SHORT_WCHAR_T
//
// What follows here is Visual Studio specific - it is a thin wrapper
// that redirects calls to w32_regex_traits<unsigned short> to
// w32_regex_traits<__wchar_t>.  This allows the library to be built
// so that it supports programs built both with and without /Zc:wchar_t.
//
template<>
class w32_regex_traits<unsigned short> : public re_detail::w32_traits_base
{
   typedef re_detail::w32_traits_base base_type;
public:
   typedef unsigned short char_type;
   typedef unsigned short uchar_type;
   typedef unsigned int size_type;
   typedef std::basic_string<unsigned short> string_type;
   typedef int locale_type; 
   static std::size_t BOOST_REGEX_CALL length(const char_type* p)
   {
      return w32_regex_traits<regex_wchar_type>::length(
         reinterpret_cast<const regex_wchar_type*>(p));
   }
   static unsigned int BOOST_REGEX_CALL syntax_type(size_type c)
   { 
      return w32_regex_traits<regex_wchar_type>::syntax_type(c); 
   }
   static unsigned short BOOST_REGEX_CALL translate(unsigned short c, bool icase)
   {
      return w32_regex_traits<regex_wchar_type>::translate(c, icase);
   }

   static void BOOST_REGEX_CALL transform(std::basic_string<unsigned short>& out, const std::basic_string<unsigned short>& in)
   { 
      w32_regex_traits<regex_wchar_type>::transform(
         reinterpret_cast<std::basic_string<regex_wchar_type>&>(out), 
         reinterpret_cast<const std::basic_string<regex_wchar_type>&>(in)); 
   }

   static void BOOST_REGEX_CALL transform_primary(std::basic_string<unsigned short>& out, const std::basic_string<unsigned short>& in)
   { 
      w32_regex_traits<regex_wchar_type>::transform_primary(
         reinterpret_cast<std::basic_string<regex_wchar_type>&>(out), 
         reinterpret_cast<const std::basic_string<regex_wchar_type>&>(in)); }

   static bool BOOST_REGEX_CALL is_separator(unsigned short c)
   {
      return w32_regex_traits<regex_wchar_type>::is_separator(c);
   }

   static bool BOOST_REGEX_CALL is_combining(unsigned short c)
   { 
      return w32_regex_traits<regex_wchar_type>::is_combining(c); 
   }
   
   static bool BOOST_REGEX_CALL is_class(unsigned short c, boost::uint_fast32_t f)
   {
      return w32_regex_traits<regex_wchar_type>::is_class(c, f);
   }

   static int BOOST_REGEX_CALL toi(unsigned short c)
   { 
      return w32_regex_traits<regex_wchar_type>::toi(c); 
   }
   static int BOOST_REGEX_CALL toi(const unsigned short*& first, const unsigned short* last, int radix)
   { 
      return w32_regex_traits<regex_wchar_type>::toi(
         reinterpret_cast<const regex_wchar_type*&>(first), 
         reinterpret_cast<const regex_wchar_type*>(last), 
         radix); 
   }

   static boost::uint_fast32_t BOOST_REGEX_CALL lookup_classname(const unsigned short* first, const unsigned short* last)
   {
      return w32_regex_traits<regex_wchar_type>::lookup_classname(
         reinterpret_cast<const regex_wchar_type*>(first), 
         reinterpret_cast<const regex_wchar_type*>(last));
   }

   static bool BOOST_REGEX_CALL lookup_collatename(std::basic_string<unsigned short>& s, const unsigned short* first, const unsigned short* last)
   {
      return w32_regex_traits<regex_wchar_type>::lookup_collatename(
         reinterpret_cast<std::basic_string<regex_wchar_type>&>(s), 
         reinterpret_cast<const regex_wchar_type*>(first), 
         reinterpret_cast<const regex_wchar_type*>(last));
   }

   static locale_type BOOST_REGEX_CALL imbue(locale_type l){ return l; }
   locale_type BOOST_REGEX_CALL getloc()const{ return locale_type(); }

   struct sentry
   {
      sentry(const w32_regex_traits<unsigned short>&)
      { w32_regex_traits<unsigned short>::update(); }
      ~sentry(){}
      operator void*() { return this; }
   };
   static void BOOST_REGEX_CALL update()
   { 
      w32_regex_traits<regex_wchar_type>::update(); 
   }
   void swap(w32_regex_traits&){}
   w32_regex_traits(){};
   ~w32_regex_traits(){};
   static std::size_t BOOST_REGEX_CALL strnarrow(char *s1, std::size_t len, const unsigned short *s2)
   { 
      return w32_regex_traits<regex_wchar_type>::strnarrow(
         s1, 
         len, 
         reinterpret_cast<const regex_wchar_type *>(s2)); 
   }
   static std::size_t BOOST_REGEX_CALL strwiden(unsigned short *s1, std::size_t len, const char *s2)
   { 
      return w32_regex_traits<regex_wchar_type>::strwiden(
         reinterpret_cast<regex_wchar_type *>(s1), len, s2); 
   }

private:
   w32_regex_traits<regex_wchar_type> m_init;

};

#endif // BOOST_REGEX_HAS_SHORT_WCHAR_T

#endif // Wide strings
#endif // Win32