194 lines
6.1 KiB
C++
194 lines
6.1 KiB
C++
/*
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*
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* Copyright (c) 2004
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* John Maddock
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*
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* Use, modification and distribution are subject to the
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* Boost Software License, Version 1.0. (See accompanying file
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* LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*
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*/
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/*
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* LOCATION: see http://www.boost.org for most recent version.
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* FILE: c_regex_traits.cpp
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* VERSION: see <boost/version.hpp>
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* DESCRIPTION: Implements out of line c_regex_traits<char> members
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*/
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#define BOOST_REGEX_SOURCE
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#include <boost/config.hpp>
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#include <boost/detail/workaround.hpp>
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#include "internals.hpp"
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#if !BOOST_WORKAROUND(__BORLANDC__, < 0x560)
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#include <boost/regex/v4/c_regex_traits.hpp>
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#include <boost/regex/v4/primary_transform.hpp>
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#include <boost/regex/v4/regex_traits_defaults.hpp>
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#ifdef BOOST_NO_STDC_NAMESPACE
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namespace std{
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using ::strxfrm; using ::isspace;
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using ::ispunct; using ::isalpha;
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using ::isalnum; using ::iscntrl;
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using ::isprint; using ::isupper;
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using ::islower; using ::isdigit;
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using ::isxdigit; using ::strtol;
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}
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#endif
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_PREFIX
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#endif
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namespace boost{
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c_regex_traits<char>::string_type BOOST_REGEX_CALL c_regex_traits<char>::transform(const char* p1, const char* p2)
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{
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std::string result(10, ' ');
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std::size_t s = result.size();
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std::size_t r;
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std::string src(p1, p2);
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while(s < (r = std::strxfrm(&*result.begin(), src.c_str(), s)))
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{
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result.append(r - s + 3, ' ');
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s = result.size();
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}
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result.erase(r);
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return result;
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}
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c_regex_traits<char>::string_type BOOST_REGEX_CALL c_regex_traits<char>::transform_primary(const char* p1, const char* p2)
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{
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static char s_delim;
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static const int s_collate_type = ::boost::re_detail::find_sort_syntax(static_cast<c_regex_traits<char>*>(0), &s_delim);
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std::string result;
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//
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// What we do here depends upon the format of the sort key returned by
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// sort key returned by this->transform:
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//
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switch(s_collate_type)
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{
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case ::boost::re_detail::sort_C:
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case ::boost::re_detail::sort_unknown:
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// the best we can do is translate to lower case, then get a regular sort key:
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{
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result.assign(p1, p2);
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for(std::string::size_type i = 0; i < result.size(); ++i)
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result[i] = static_cast<char>((std::tolower)(static_cast<unsigned char>(result[i])));
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result = transform(&*result.begin(), &*result.begin() + result.size());
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break;
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}
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case ::boost::re_detail::sort_fixed:
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{
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// get a regular sort key, and then truncate it:
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result = transform(p1, p2);
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result.erase(s_delim);
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break;
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}
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case ::boost::re_detail::sort_delim:
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// get a regular sort key, and then truncate everything after the delim:
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result = transform(p1, p2);
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if(result.size() && (result[0] == s_delim))
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break;
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std::size_t i;
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for(i = 0; i < result.size(); ++i)
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{
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if(result[i] == s_delim)
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break;
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}
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result.erase(i);
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break;
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}
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if(result.empty())
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result = std::string(1, char(0));
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return result;
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}
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c_regex_traits<char>::char_class_type BOOST_REGEX_CALL c_regex_traits<char>::lookup_classname(const char* p1, const char* p2)
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{
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static const char_class_type masks[] =
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{
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0,
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char_class_alnum,
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char_class_alpha,
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char_class_blank,
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char_class_cntrl,
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char_class_digit,
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char_class_digit,
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char_class_graph,
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char_class_horizontal,
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char_class_lower,
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char_class_lower,
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char_class_print,
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char_class_punct,
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char_class_space,
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char_class_space,
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char_class_upper,
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char_class_unicode,
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char_class_upper,
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char_class_vertical,
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char_class_alnum | char_class_word,
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char_class_alnum | char_class_word,
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char_class_xdigit,
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};
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int idx = ::boost::re_detail::get_default_class_id(p1, p2);
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if(idx < 0)
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{
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std::string s(p1, p2);
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for(std::string::size_type i = 0; i < s.size(); ++i)
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s[i] = static_cast<char>((std::tolower)(static_cast<unsigned char>(s[i])));
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idx = ::boost::re_detail::get_default_class_id(&*s.begin(), &*s.begin() + s.size());
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}
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BOOST_ASSERT(std::size_t(idx+1) < sizeof(masks) / sizeof(masks[0]));
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return masks[idx+1];
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}
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bool BOOST_REGEX_CALL c_regex_traits<char>::isctype(char c, char_class_type mask)
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{
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return
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((mask & char_class_space) && (std::isspace)(static_cast<unsigned char>(c)))
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|| ((mask & char_class_print) && (std::isprint)(static_cast<unsigned char>(c)))
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|| ((mask & char_class_cntrl) && (std::iscntrl)(static_cast<unsigned char>(c)))
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|| ((mask & char_class_upper) && (std::isupper)(static_cast<unsigned char>(c)))
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|| ((mask & char_class_lower) && (std::islower)(static_cast<unsigned char>(c)))
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|| ((mask & char_class_alpha) && (std::isalpha)(static_cast<unsigned char>(c)))
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|| ((mask & char_class_digit) && (std::isdigit)(static_cast<unsigned char>(c)))
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|| ((mask & char_class_punct) && (std::ispunct)(static_cast<unsigned char>(c)))
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|| ((mask & char_class_xdigit) && (std::isxdigit)(static_cast<unsigned char>(c)))
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|| ((mask & char_class_blank) && (std::isspace)(static_cast<unsigned char>(c)) && !::boost::re_detail::is_separator(c))
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|| ((mask & char_class_word) && (c == '_'))
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|| ((mask & char_class_vertical) && (::boost::re_detail::is_separator(c) || (c == '\v')))
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|| ((mask & char_class_horizontal) && (std::isspace)(static_cast<unsigned char>(c)) && !::boost::re_detail::is_separator(c) && (c != '\v'));
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}
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c_regex_traits<char>::string_type BOOST_REGEX_CALL c_regex_traits<char>::lookup_collatename(const char* p1, const char* p2)
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{
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std::string s(p1, p2);
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s = ::boost::re_detail::lookup_default_collate_name(s);
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if(s.empty() && (p2-p1 == 1))
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s.append(1, *p1);
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return s;
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}
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int BOOST_REGEX_CALL c_regex_traits<char>::value(char c, int radix)
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{
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char b[2] = { c, '\0', };
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char* ep;
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int result = std::strtol(b, &ep, radix);
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if(ep == b)
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return -1;
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return result;
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}
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}
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_SUFFIX
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#endif
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#endif
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