boost/regex/v4/cpp_regex_traits.hpp
/* * * 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 cpp_regex_traits.hpp * VERSION see <boost/version.hpp> * DESCRIPTION: Declares regular expression traits class cpp_regex_traits. */ #ifndef BOOST_CPP_REGEX_TRAITS_HPP_INCLUDED #define BOOST_CPP_REGEX_TRAITS_HPP_INCLUDED #include <boost/config.hpp> #ifndef BOOST_NO_STD_LOCALE #ifndef BOOST_RE_PAT_EXCEPT_HPP #include <boost/regex/pattern_except.hpp> #endif #ifndef BOOST_REGEX_TRAITS_DEFAULTS_HPP_INCLUDED #include <boost/regex/v4/regex_traits_defaults.hpp> #endif #ifdef BOOST_HAS_THREADS #include <boost/regex/pending/static_mutex.hpp> #endif #ifndef BOOST_REGEX_PRIMARY_TRANSFORM #include <boost/regex/v4/primary_transform.hpp> #endif #ifndef BOOST_REGEX_OBJECT_CACHE_HPP #include <boost/regex/pending/object_cache.hpp> #endif #include <istream> #include <ios> #ifdef BOOST_HAS_ABI_HEADERS # include BOOST_ABI_PREFIX #endif #ifdef BOOST_MSVC #pragma warning(push) #pragma warning(disable:4786) #endif namespace boost{ // // forward declaration is needed by some compilers: // template <class charT> class cpp_regex_traits; namespace re_detail{ // // class parser_buf: // acts as a stream buffer which wraps around a pair of pointers: // template <class charT, class traits = ::std::char_traits<charT> > class parser_buf : public ::std::basic_streambuf<charT, traits> { typedef ::std::basic_streambuf<charT, traits> base_type; typedef typename base_type::int_type int_type; typedef typename base_type::char_type char_type; typedef typename base_type::pos_type pos_type; typedef ::std::streamsize streamsize; typedef typename base_type::off_type off_type; public: parser_buf() : base_type() { setbuf(0, 0); } const charT* getnext() { return this->gptr(); } protected: std::basic_streambuf<charT, traits>* setbuf(char_type* s, streamsize n); typename parser_buf<charT, traits>::pos_type seekpos(pos_type sp, ::std::ios_base::openmode which); typename parser_buf<charT, traits>::pos_type seekoff(off_type off, ::std::ios_base::seekdir way, ::std::ios_base::openmode which); private: parser_buf& operator=(const parser_buf&); parser_buf(const parser_buf&); }; template<class charT, class traits> std::basic_streambuf<charT, traits>* parser_buf<charT, traits>::setbuf(char_type* s, streamsize n) { this->setg(s, s, s + n); return this; } template<class charT, class traits> typename parser_buf<charT, traits>::pos_type parser_buf<charT, traits>::seekoff(off_type off, ::std::ios_base::seekdir way, ::std::ios_base::openmode which) { if(which & ::std::ios_base::out) return pos_type(off_type(-1)); std::ptrdiff_t size = this->egptr() - this->eback(); std::ptrdiff_t pos = this->gptr() - this->eback(); charT* g = this->eback(); switch(way) { case ::std::ios_base::beg: if((off < 0) || (off > size)) return pos_type(off_type(-1)); else this->setg(g, g + off, g + size); break; case ::std::ios_base::end: if((off < 0) || (off > size)) return pos_type(off_type(-1)); else this->setg(g, g + size - off, g + size); break; case ::std::ios_base::cur: { std::ptrdiff_t newpos = pos + off; if((newpos < 0) || (newpos > size)) return pos_type(off_type(-1)); else this->setg(g, g + newpos, g + size); break; } default: ; } #ifdef BOOST_MSVC #pragma warning(push) #pragma warning(disable:4244) #endif return static_cast<pos_type>(this->gptr() - this->eback()); #ifdef BOOST_MSVC #pragma warning(pop) #endif } template<class charT, class traits> typename parser_buf<charT, traits>::pos_type parser_buf<charT, traits>::seekpos(pos_type sp, ::std::ios_base::openmode which) { if(which & ::std::ios_base::out) return pos_type(off_type(-1)); off_type size = static_cast<off_type>(this->egptr() - this->eback()); charT* g = this->eback(); if(off_type(sp) <= size) { this->setg(g, g + off_type(sp), g + size); } return pos_type(off_type(-1)); } // // class cpp_regex_traits_base: // acts as a container for locale and the facets we are using. // template <class charT> struct cpp_regex_traits_base { cpp_regex_traits_base(const std::locale& l) { imbue(l); } std::locale imbue(const std::locale& l); std::locale m_locale; std::ctype<charT> const* m_pctype; #ifndef BOOST_NO_STD_MESSAGES std::messages<charT> const* m_pmessages; #endif std::collate<charT> const* m_pcollate; bool operator<(const cpp_regex_traits_base& b)const { if(m_pctype == b.m_pctype) { #ifndef BOOST_NO_STD_MESSAGES if(m_pmessages == b.m_pmessages) { } return m_pmessages < b.m_pmessages; #else return m_pcollate < b.m_pcollate; #endif } return m_pctype < b.m_pctype; } bool operator==(const cpp_regex_traits_base& b)const { return (m_pctype == b.m_pctype) #ifndef BOOST_NO_STD_MESSAGES && (m_pmessages == b.m_pmessages) #endif && (m_pcollate == b.m_pcollate); } }; template <class charT> std::locale cpp_regex_traits_base<charT>::imbue(const std::locale& l) { std::locale result(m_locale); m_locale = l; m_pctype = &BOOST_USE_FACET(std::ctype<charT>, l); #ifndef BOOST_NO_STD_MESSAGES m_pmessages = &BOOST_USE_FACET(std::messages<charT>, l); #endif m_pcollate = &BOOST_USE_FACET(std::collate<charT>, l); return result; } // // class cpp_regex_traits_char_layer: // implements methods that require specialisation for narrow characters: // template <class charT> class cpp_regex_traits_char_layer : public cpp_regex_traits_base<charT> { typedef std::basic_string<charT> string_type; typedef std::map<charT, regex_constants::syntax_type> map_type; typedef typename map_type::const_iterator map_iterator_type; public: cpp_regex_traits_char_layer(const std::locale& l) : cpp_regex_traits_base<charT>(l) { init(); } cpp_regex_traits_char_layer(const cpp_regex_traits_base<charT>& b) : cpp_regex_traits_base<charT>(b) { init(); } void init(); regex_constants::syntax_type syntax_type(charT c)const { map_iterator_type i = m_char_map.find(c); return ((i == m_char_map.end()) ? 0 : i->second); } regex_constants::escape_syntax_type escape_syntax_type(charT c) const { map_iterator_type i = m_char_map.find(c); if(i == m_char_map.end()) { if(this->m_pctype->is(std::ctype_base::lower, c)) return regex_constants::escape_type_class; if(this->m_pctype->is(std::ctype_base::upper, c)) return regex_constants::escape_type_not_class; return 0; } return i->second; } private: string_type get_default_message(regex_constants::syntax_type); // TODO: use a hash table when available! map_type m_char_map; }; template <class charT> void cpp_regex_traits_char_layer<charT>::init() { // we need to start by initialising our syntax map so we know which // character is used for which purpose: #ifndef BOOST_NO_STD_MESSAGES #ifndef __IBMCPP__ typename std::messages<charT>::catalog cat = static_cast<std::messages<char>::catalog>(-1); #else typename std::messages<charT>::catalog cat = reinterpret_cast<std::messages<char>::catalog>(-1); #endif std::string cat_name(cpp_regex_traits<charT>::get_catalog_name()); if(cat_name.size()) { cat = this->m_pmessages->open( cat_name, this->m_locale); if((int)cat < 0) { std::string m("Unable to open message catalog: "); std::runtime_error err(m + cat_name); boost::re_detail::raise_runtime_error(err); } } // // if we have a valid catalog then load our messages: // if((int)cat >= 0) { try{ for(regex_constants::syntax_type i = 1; i < regex_constants::syntax_max; ++i) { string_type mss = this->m_pmessages->get(cat, 0, i, get_default_message(i)); for(typename string_type::size_type j = 0; j < mss.size(); ++j) { m_char_map[mss[j]] = i; } } this->m_pmessages->close(cat); } catch(...) { this->m_pmessages->close(cat); throw; } } else { #endif for(regex_constants::syntax_type i = 1; i < regex_constants::syntax_max; ++i) { const char* ptr = get_default_syntax(i); while(ptr && *ptr) { m_char_map[this->m_pctype->widen(*ptr)] = i; ++ptr; } } #ifndef BOOST_NO_STD_MESSAGES } #endif } template <class charT> typename cpp_regex_traits_char_layer<charT>::string_type cpp_regex_traits_char_layer<charT>::get_default_message(regex_constants::syntax_type i) { const char* ptr = get_default_syntax(i); string_type result; while(ptr && *ptr) { result.append(1, this->m_pctype->widen(*ptr)); ++ptr; } return result; } // // specialised version for narrow characters: // template <> class BOOST_REGEX_DECL cpp_regex_traits_char_layer<char> : public cpp_regex_traits_base<char> { typedef std::string string_type; public: cpp_regex_traits_char_layer(const std::locale& l) : cpp_regex_traits_base<char>(l) { init(); } cpp_regex_traits_char_layer(const cpp_regex_traits_base<char>& l) : cpp_regex_traits_base<char>(l) { init(); } regex_constants::syntax_type syntax_type(char c)const { return m_char_map[static_cast<unsigned char>(c)]; } regex_constants::escape_syntax_type escape_syntax_type(char c) const { return m_char_map[static_cast<unsigned char>(c)]; } private: regex_constants::syntax_type m_char_map[1u << CHAR_BIT]; void init(); }; #ifdef BOOST_REGEX_BUGGY_CTYPE_FACET enum { char_class_space=1<<0, char_class_print=1<<1, char_class_cntrl=1<<2, char_class_upper=1<<3, char_class_lower=1<<4, char_class_alpha=1<<5, char_class_digit=1<<6, char_class_punct=1<<7, char_class_xdigit=1<<8, char_class_alnum=char_class_alpha|char_class_digit, char_class_graph=char_class_alnum|char_class_punct, char_class_blank=1<<9, char_class_word=1<<10, char_class_unicode=1<<11 }; #endif // // class cpp_regex_traits_implementation: // provides pimpl implementation for cpp_regex_traits. // template <class charT> class cpp_regex_traits_implementation : public cpp_regex_traits_char_layer<charT> { public: typedef typename cpp_regex_traits<charT>::char_class_type char_class_type; typedef typename std::ctype<charT>::mask native_mask_type; #ifndef BOOST_REGEX_BUGGY_CTYPE_FACET BOOST_STATIC_CONSTANT(char_class_type, mask_blank = 1u << 24); BOOST_STATIC_CONSTANT(char_class_type, mask_word = 1u << 25); BOOST_STATIC_CONSTANT(char_class_type, mask_unicode = 1u << 26); #endif typedef std::basic_string<charT> string_type; typedef charT char_type; //cpp_regex_traits_implementation(); cpp_regex_traits_implementation(const std::locale& l) : cpp_regex_traits_char_layer<charT>(l) { init(); } cpp_regex_traits_implementation(const cpp_regex_traits_base<charT>& l) : cpp_regex_traits_char_layer<charT>(l) { init(); } std::string error_string(regex_constants::error_type n) const { if(!m_error_strings.empty()) { std::map<int, std::string>::const_iterator p = m_error_strings.find(n); return (p == m_error_strings.end()) ? std::string(get_default_error_string(n)) : p->second; } return get_default_error_string(n); } char_class_type lookup_classname(const charT* p1, const charT* p2) const { char_class_type result = lookup_classname_imp(p1, p2); if(result == 0) { string_type temp(p1, p2); this->m_pctype->tolower(&*temp.begin(), &*temp.begin() + temp.size()); result = lookup_classname_imp(&*temp.begin(), &*temp.begin() + temp.size()); } return result; } string_type lookup_collatename(const charT* p1, const charT* p2) const; string_type transform_primary(const charT* p1, const charT* p2) const; string_type transform(const charT* p1, const charT* p2) const; private: std::map<int, std::string> m_error_strings; // error messages indexed by numberic ID std::map<string_type, char_class_type> m_custom_class_names; // character class names std::map<string_type, string_type> m_custom_collate_names; // collating element names unsigned m_collate_type; // the form of the collation string charT m_collate_delim; // the collation group delimiter // // helpers: // char_class_type lookup_classname_imp(const charT* p1, const charT* p2) const; void init(); #ifdef BOOST_REGEX_BUGGY_CTYPE_FACET public: bool isctype(charT c, char_class_type m)const; #endif }; #ifndef BOOST_REGEX_BUGGY_CTYPE_FACET #if !defined(BOOST_NO_INCLASS_MEMBER_INITIALIZATION) template <class charT> typename cpp_regex_traits_implementation<charT>::char_class_type const cpp_regex_traits_implementation<charT>::mask_blank; template <class charT> typename cpp_regex_traits_implementation<charT>::char_class_type const cpp_regex_traits_implementation<charT>::mask_word; template <class charT> typename cpp_regex_traits_implementation<charT>::char_class_type const cpp_regex_traits_implementation<charT>::mask_unicode; #endif #endif template <class charT> typename cpp_regex_traits_implementation<charT>::string_type cpp_regex_traits_implementation<charT>::transform_primary(const charT* p1, const charT* p2) const { // // PRECONDITIONS: // // A bug in gcc 3.2 (and maybe other versions as well) treats // p1 as a null terminated string, for efficiency reasons // we work around this elsewhere, but just assert here that // we adhere to gcc's (buggy) preconditions... // BOOST_ASSERT(*p2 == 0); string_type result; // // swallowing all exceptions here is a bad idea // however at least one std lib will always throw // std::bad_alloc for certain arguments... // try{ // // What we do here depends upon the format of the sort key returned by // sort key returned by this->transform: // switch(m_collate_type) { case sort_C: case sort_unknown: // the best we can do is translate to lower case, then get a regular sort key: { result.assign(p1, p2); this->m_pctype->tolower(&*result.begin(), &*result.begin() + result.size()); result = this->m_pcollate->transform(&*result.begin(), &*result.begin() + result.size()); break; } case sort_fixed: { // get a regular sort key, and then truncate it: result.assign(this->m_pcollate->transform(p1, p2)); result.erase(this->m_collate_delim); break; } case sort_delim: // get a regular sort key, and then truncate everything after the delim: result.assign(this->m_pcollate->transform(p1, p2)); std::size_t i; for(i = 0; i < result.size(); ++i) { if(result[i] == m_collate_delim) break; } result.erase(i); break; } }catch(...){} while(result.size() && (charT(0) == *result.rbegin())) result.erase(result.size() - 1); if(result.empty()) { // character is ignorable at the primary level: result = string_type(1, charT(0)); } return result; } template <class charT> typename cpp_regex_traits_implementation<charT>::string_type cpp_regex_traits_implementation<charT>::transform(const charT* p1, const charT* p2) const { // // PRECONDITIONS: // // A bug in gcc 3.2 (and maybe other versions as well) treats // p1 as a null terminated string, for efficiency reasons // we work around this elsewhere, but just assert here that // we adhere to gcc's (buggy) preconditions... // BOOST_ASSERT(*p2 == 0); // // swallowing all exceptions here is a bad idea // however at least one std lib will always throw // std::bad_alloc for certain arguments... // string_type result; try{ result = this->m_pcollate->transform(p1, p2); // // Borland's STLPort version returns a NULL-terminated // string that has garbage at the end - each call to // std::collate<wchar_t>::transform returns a different string! // So as a workaround, we'll truncate the string at the first NULL // which _seems_ to work.... #if BOOST_WORKAROUND(__BORLANDC__, < 0x580) result.erase(result.find(charT(0))); #else // // some implementations (Dinkumware) append unnecessary trailing \0's: while(result.size() && (charT(0) == *result.rbegin())) result.erase(result.size() - 1); #endif BOOST_ASSERT(std::find(result.begin(), result.end(), charT(0)) == result.end()); } catch(...) { } return result; } template <class charT> typename cpp_regex_traits_implementation<charT>::string_type cpp_regex_traits_implementation<charT>::lookup_collatename(const charT* p1, const charT* p2) const { typedef typename std::map<string_type, string_type>::const_iterator iter_type; if(m_custom_collate_names.size()) { iter_type pos = m_custom_collate_names.find(string_type(p1, p2)); if(pos != m_custom_collate_names.end()) return pos->second; } #if !defined(BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS)\ && !BOOST_WORKAROUND(BOOST_MSVC, < 1300)\ && !BOOST_WORKAROUND(__BORLANDC__, <= 0x0551) std::string name(p1, p2); #else std::string name; const charT* p0 = p1; while(p0 != p2) name.append(1, char(*p0++)); #endif name = lookup_default_collate_name(name); #if !defined(BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS)\ && !BOOST_WORKAROUND(BOOST_MSVC, < 1300)\ && !BOOST_WORKAROUND(__BORLANDC__, <= 0x0551) if(name.size()) return string_type(name.begin(), name.end()); #else if(name.size()) { string_type result; typedef std::string::const_iterator iter; iter b = name.begin(); iter e = name.end(); while(b != e) result.append(1, charT(*b++)); return result; } #endif if(p2 - p1 == 1) return string_type(1, *p1); return string_type(); } template <class charT> void cpp_regex_traits_implementation<charT>::init() { #ifndef BOOST_NO_STD_MESSAGES #ifndef __IBMCPP__ typename std::messages<charT>::catalog cat = static_cast<std::messages<char>::catalog>(-1); #else typename std::messages<charT>::catalog cat = reinterpret_cast<std::messages<char>::catalog>(-1); #endif std::string cat_name(cpp_regex_traits<charT>::get_catalog_name()); if(cat_name.size()) { cat = this->m_pmessages->open( cat_name, this->m_locale); if((int)cat < 0) { std::string m("Unable to open message catalog: "); std::runtime_error err(m + cat_name); boost::re_detail::raise_runtime_error(err); } } // // if we have a valid catalog then load our messages: // if((int)cat >= 0) { // // Error messages: // for(boost::regex_constants::error_type i = static_cast<boost::regex_constants::error_type>(0); i <= boost::regex_constants::error_unknown; i = static_cast<boost::regex_constants::error_type>(i + 1)) { const char* p = get_default_error_string(i); string_type default_message; while(*p) { default_message.append(1, this->m_pctype->widen(*p)); ++p; } string_type s = this->m_pmessages->get(cat, 0, i+200, default_message); std::string result; for(std::string::size_type j = 0; j < s.size(); ++j) { result.append(1, this->m_pctype->narrow(s[j], 0)); } m_error_strings[i] = result; } // // Custom class names: // #ifndef BOOST_REGEX_BUGGY_CTYPE_FACET static const char_class_type masks[14] = { std::ctype<charT>::alnum, std::ctype<charT>::alpha, std::ctype<charT>::cntrl, std::ctype<charT>::digit, std::ctype<charT>::graph, std::ctype<charT>::lower, std::ctype<charT>::print, std::ctype<charT>::punct, std::ctype<charT>::space, std::ctype<charT>::upper, std::ctype<charT>::xdigit, cpp_regex_traits_implementation<charT>::mask_blank, cpp_regex_traits_implementation<charT>::mask_word, cpp_regex_traits_implementation<charT>::mask_unicode, }; #else static const char_class_type masks[14] = { ::boost::re_detail::char_class_alnum, ::boost::re_detail::char_class_alpha, ::boost::re_detail::char_class_cntrl, ::boost::re_detail::char_class_digit, ::boost::re_detail::char_class_graph, ::boost::re_detail::char_class_lower, ::boost::re_detail::char_class_print, ::boost::re_detail::char_class_punct, ::boost::re_detail::char_class_space, ::boost::re_detail::char_class_upper, ::boost::re_detail::char_class_xdigit, ::boost::re_detail::char_class_blank, ::boost::re_detail::char_class_word, ::boost::re_detail::char_class_unicode, }; #endif static const string_type null_string; for(unsigned int j = 0; j <= 13; ++j) { string_type s(this->m_pmessages->get(cat, 0, j+300, null_string)); if(s.size()) this->m_custom_class_names[s] = masks[j]; } } #endif // // get the collation format used by m_pcollate: // m_collate_type = re_detail::find_sort_syntax(this, &m_collate_delim); } template <class charT> typename cpp_regex_traits_implementation<charT>::char_class_type cpp_regex_traits_implementation<charT>::lookup_classname_imp(const charT* p1, const charT* p2) const { #ifndef BOOST_REGEX_BUGGY_CTYPE_FACET static const char_class_type masks[20] = { 0, std::ctype<char>::alnum, std::ctype<char>::alpha, cpp_regex_traits_implementation<charT>::mask_blank, std::ctype<char>::cntrl, std::ctype<char>::digit, std::ctype<char>::digit, std::ctype<char>::graph, std::ctype<char>::lower, std::ctype<char>::lower, std::ctype<char>::print, std::ctype<char>::punct, std::ctype<char>::space, std::ctype<char>::space, std::ctype<char>::upper, cpp_regex_traits_implementation<charT>::mask_unicode, std::ctype<char>::upper, std::ctype<char>::alnum | cpp_regex_traits_implementation<charT>::mask_word, std::ctype<char>::alnum | cpp_regex_traits_implementation<charT>::mask_word, std::ctype<char>::xdigit, }; #else static const char_class_type masks[20] = { 0, ::boost::re_detail::char_class_alnum, ::boost::re_detail::char_class_alpha, ::boost::re_detail::char_class_blank, ::boost::re_detail::char_class_cntrl, ::boost::re_detail::char_class_digit, ::boost::re_detail::char_class_digit, ::boost::re_detail::char_class_graph, ::boost::re_detail::char_class_lower, ::boost::re_detail::char_class_lower, ::boost::re_detail::char_class_print, ::boost::re_detail::char_class_punct, ::boost::re_detail::char_class_space, ::boost::re_detail::char_class_space, ::boost::re_detail::char_class_upper, ::boost::re_detail::char_class_unicode, ::boost::re_detail::char_class_upper, ::boost::re_detail::char_class_alnum | ::boost::re_detail::char_class_word, ::boost::re_detail::char_class_alnum | ::boost::re_detail::char_class_word, ::boost::re_detail::char_class_xdigit, }; #endif if(m_custom_class_names.size()) { typedef typename std::map<std::basic_string<charT>, char_class_type>::const_iterator map_iter; map_iter pos = m_custom_class_names.find(string_type(p1, p2)); if(pos != m_custom_class_names.end()) return pos->second; } std::size_t id = 1 + re_detail::get_default_class_id(p1, p2); BOOST_ASSERT(id < sizeof(masks) / sizeof(masks[0])); return masks[id]; } #ifdef BOOST_REGEX_BUGGY_CTYPE_FACET template <class charT> bool cpp_regex_traits_implementation<charT>::isctype(const charT c, char_class_type mask) const { return ((mask & ::boost::re_detail::char_class_space) && (m_pctype->is(std::ctype<charT>::space, c))) || ((mask & ::boost::re_detail::char_class_print) && (m_pctype->is(std::ctype<charT>::print, c))) || ((mask & ::boost::re_detail::char_class_cntrl) && (m_pctype->is(std::ctype<charT>::cntrl, c))) || ((mask & ::boost::re_detail::char_class_upper) && (m_pctype->is(std::ctype<charT>::upper, c))) || ((mask & ::boost::re_detail::char_class_lower) && (m_pctype->is(std::ctype<charT>::lower, c))) || ((mask & ::boost::re_detail::char_class_alpha) && (m_pctype->is(std::ctype<charT>::alpha, c))) || ((mask & ::boost::re_detail::char_class_digit) && (m_pctype->is(std::ctype<charT>::digit, c))) || ((mask & ::boost::re_detail::char_class_punct) && (m_pctype->is(std::ctype<charT>::punct, c))) || ((mask & ::boost::re_detail::char_class_xdigit) && (m_pctype->is(std::ctype<charT>::xdigit, c))) || ((mask & ::boost::re_detail::char_class_blank) && (m_pctype->is(std::ctype<charT>::space, c)) && !::boost::re_detail::is_separator(c)) || ((mask & ::boost::re_detail::char_class_word) && (c == '_')) || ((mask & ::boost::re_detail::char_class_unicode) && ::boost::re_detail::is_extended(c)); } #endif template <class charT> inline boost::shared_ptr<const cpp_regex_traits_implementation<charT> > create_cpp_regex_traits(const std::locale& l BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE(charT)) { cpp_regex_traits_base<charT> key(l); return ::boost::object_cache<cpp_regex_traits_base<charT>, cpp_regex_traits_implementation<charT> >::get(key, 5); } } // re_detail template <class charT> class cpp_regex_traits { private: typedef std::ctype<charT> ctype_type; public: typedef charT char_type; typedef std::size_t size_type; typedef std::basic_string<char_type> string_type; typedef std::locale locale_type; typedef boost::uint_least32_t char_class_type; struct boost_extensions_tag{}; cpp_regex_traits() : m_pimpl(re_detail::create_cpp_regex_traits<charT>(std::locale())) { } static size_type length(const char_type* p) { return std::char_traits<charT>::length(p); } regex_constants::syntax_type syntax_type(charT c)const { return m_pimpl->syntax_type(c); } regex_constants::escape_syntax_type escape_syntax_type(charT c) const { return m_pimpl->escape_syntax_type(c); } charT translate(charT c) const { return c; } charT translate_nocase(charT c) const { return m_pimpl->m_pctype->tolower(c); } charT translate(charT c, bool icase) const { return icase ? m_pimpl->m_pctype->tolower(c) : c; } charT tolower(charT c) const { return m_pimpl->m_pctype->tolower(c); } charT toupper(charT c) const { return m_pimpl->m_pctype->toupper(c); } string_type transform(const charT* p1, const charT* p2) const { return m_pimpl->transform(p1, p2); } string_type transform_primary(const charT* p1, const charT* p2) const { return m_pimpl->transform_primary(p1, p2); } char_class_type lookup_classname(const charT* p1, const charT* p2) const { return m_pimpl->lookup_classname(p1, p2); } string_type lookup_collatename(const charT* p1, const charT* p2) const { return m_pimpl->lookup_collatename(p1, p2); } bool isctype(charT c, char_class_type f) const { #ifndef BOOST_REGEX_BUGGY_CTYPE_FACET typedef typename std::ctype<charT>::mask ctype_mask; static const ctype_mask mask_base = static_cast<ctype_mask>( std::ctype<charT>::alnum | std::ctype<charT>::alpha | std::ctype<charT>::cntrl | std::ctype<charT>::digit | std::ctype<charT>::graph | std::ctype<charT>::lower | std::ctype<charT>::print | std::ctype<charT>::punct | std::ctype<charT>::space | std::ctype<charT>::upper | std::ctype<charT>::xdigit); if((f & mask_base) && (m_pimpl->m_pctype->is( static_cast<ctype_mask>(f & mask_base), c))) return true; else if((f & re_detail::cpp_regex_traits_implementation<charT>::mask_unicode) && re_detail::is_extended(c)) return true; else if((f & re_detail::cpp_regex_traits_implementation<charT>::mask_word) && (c == '_')) return true; else if((f & re_detail::cpp_regex_traits_implementation<charT>::mask_blank) && m_pimpl->m_pctype->is(std::ctype<charT>::space, c) && !re_detail::is_separator(c)) return true; return false; #else return m_pimpl->isctype(c, f); #endif } int toi(const charT*& p1, const charT* p2, int radix)const; int value(charT c, int radix)const { const charT* pc = &c; return toi(pc, pc + 1, radix); } locale_type imbue(locale_type l) { std::locale result(getloc()); m_pimpl = re_detail::create_cpp_regex_traits<charT>(l); return result; } locale_type getloc()const { return m_pimpl->m_locale; } std::string error_string(regex_constants::error_type n) const { return m_pimpl->error_string(n); } // // extension: // set the name of the message catalog in use (defaults to "boost_regex"). // static std::string catalog_name(const std::string& name); static std::string get_catalog_name(); private: boost::shared_ptr<const re_detail::cpp_regex_traits_implementation<charT> > m_pimpl; // // catalog name handler: // static std::string& get_catalog_name_inst(); #ifdef BOOST_HAS_THREADS static static_mutex& get_mutex_inst(); #endif }; template <class charT> int cpp_regex_traits<charT>::toi(const charT*& first, const charT* last, int radix)const { re_detail::parser_buf<charT> sbuf; // buffer for parsing numbers. std::basic_istream<charT> is(&sbuf); // stream for parsing numbers. // we do NOT want to parse any thousands separators inside the stream: last = std::find(first, last, BOOST_USE_FACET(std::numpunct<charT>, is.getloc()).thousands_sep()); sbuf.pubsetbuf(const_cast<charT*>(static_cast<const charT*>(first)), static_cast<std::streamsize>(last-first)); is.clear(); if(std::abs(radix) == 16) is >> std::hex; else if(std::abs(radix) == 8) is >> std::oct; else is >> std::dec; int val; if(is >> val) { first = first + ((last - first) - sbuf.in_avail()); return val; } else return -1; } template <class charT> std::string cpp_regex_traits<charT>::catalog_name(const std::string& name) { #ifdef BOOST_HAS_THREADS static_mutex::scoped_lock lk(get_mutex_inst()); #endif std::string result(get_catalog_name_inst()); get_catalog_name_inst() = name; return result; } template <class charT> std::string& cpp_regex_traits<charT>::get_catalog_name_inst() { static std::string s_name; return s_name; } template <class charT> std::string cpp_regex_traits<charT>::get_catalog_name() { #ifdef BOOST_HAS_THREADS static_mutex::scoped_lock lk(get_mutex_inst()); #endif std::string result(get_catalog_name_inst()); return result; } #ifdef BOOST_HAS_THREADS template <class charT> static_mutex& cpp_regex_traits<charT>::get_mutex_inst() { static static_mutex s_mutex = BOOST_STATIC_MUTEX_INIT; return s_mutex; } #endif } // boost #ifdef BOOST_MSVC #pragma warning(pop) #endif #ifdef BOOST_HAS_ABI_HEADERS # include BOOST_ABI_SUFFIX #endif #endif #endif