| /* |
| * |
| * Copyright (c) 1998-2002 |
| * 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: posix_api.cpp |
| * VERSION: see <boost/version.hpp> |
| * DESCRIPTION: Implements the Posix API wrappers. |
| */ |
| |
| #define BOOST_REGEX_SOURCE |
| |
| #include <cstdio> |
| #include <boost/regex.hpp> |
| #include <boost/cregex.hpp> |
| |
| #if defined(BOOST_NO_STDC_NAMESPACE) |
| namespace std{ |
| using ::sprintf; |
| using ::strcpy; |
| using ::strcmp; |
| } |
| #endif |
| |
| |
| namespace boost{ |
| |
| namespace{ |
| |
| unsigned int magic_value = 25631; |
| |
| const char* names[] = { |
| "REG_NOERROR", |
| "REG_NOMATCH", |
| "REG_BADPAT", |
| "REG_ECOLLATE", |
| "REG_ECTYPE", |
| "REG_EESCAPE", |
| "REG_ESUBREG", |
| "REG_EBRACK", |
| "REG_EPAREN", |
| "REG_EBRACE", |
| "REG_BADBR", |
| "REG_ERANGE", |
| "REG_ESPACE", |
| "REG_BADRPT", |
| "REG_EEND", |
| "REG_ESIZE", |
| "REG_ERPAREN", |
| "REG_EMPTY", |
| "REG_ECOMPLEXITY", |
| "REG_ESTACK", |
| "REG_E_PERL", |
| "REG_E_UNKNOWN", |
| }; |
| } // namespace |
| |
| typedef boost::basic_regex<char, c_regex_traits<char> > c_regex_type; |
| |
| BOOST_REGEX_DECL int BOOST_REGEX_CCALL regcompA(regex_tA* expression, const char* ptr, int f) |
| { |
| if(expression->re_magic != magic_value) |
| { |
| expression->guts = 0; |
| #ifndef BOOST_NO_EXCEPTIONS |
| try{ |
| #endif |
| expression->guts = new c_regex_type(); |
| #ifndef BOOST_NO_EXCEPTIONS |
| } catch(...) |
| { |
| return REG_ESPACE; |
| } |
| #else |
| if(0 == expression->guts) |
| return REG_E_MEMORY; |
| #endif |
| } |
| // set default flags: |
| boost::uint_fast32_t flags = (f & REG_PERLEX) ? 0 : ((f & REG_EXTENDED) ? regex::extended : regex::basic); |
| expression->eflags = (f & REG_NEWLINE) ? match_not_dot_newline : match_default; |
| // and translate those that are actually set: |
| |
| if(f & REG_NOCOLLATE) |
| { |
| flags |= regex::nocollate; |
| #ifndef BOOST_REGEX_V3 |
| flags &= ~regex::collate; |
| #endif |
| } |
| |
| if(f & REG_NOSUB) |
| { |
| //expression->eflags |= match_any; |
| flags |= regex::nosubs; |
| } |
| |
| if(f & REG_NOSPEC) |
| flags |= regex::literal; |
| if(f & REG_ICASE) |
| flags |= regex::icase; |
| if(f & REG_ESCAPE_IN_LISTS) |
| flags &= ~regex::no_escape_in_lists; |
| if(f & REG_NEWLINE_ALT) |
| flags |= regex::newline_alt; |
| |
| const char* p2; |
| if(f & REG_PEND) |
| p2 = expression->re_endp; |
| else p2 = ptr + std::strlen(ptr); |
| |
| int result; |
| |
| #ifndef BOOST_NO_EXCEPTIONS |
| try{ |
| #endif |
| expression->re_magic = magic_value; |
| static_cast<c_regex_type*>(expression->guts)->set_expression(ptr, p2, flags); |
| expression->re_nsub = static_cast<c_regex_type*>(expression->guts)->mark_count() - 1; |
| result = static_cast<c_regex_type*>(expression->guts)->error_code(); |
| #ifndef BOOST_NO_EXCEPTIONS |
| } |
| catch(const boost::regex_error& be) |
| { |
| result = be.code(); |
| } |
| catch(...) |
| { |
| result = REG_E_UNKNOWN; |
| } |
| #endif |
| if(result) |
| regfreeA(expression); |
| return result; |
| |
| } |
| |
| BOOST_REGEX_DECL regsize_t BOOST_REGEX_CCALL regerrorA(int code, const regex_tA* e, char* buf, regsize_t buf_size) |
| { |
| std::size_t result = 0; |
| if(code & REG_ITOA) |
| { |
| code &= ~REG_ITOA; |
| if(code <= (int)REG_E_UNKNOWN) |
| { |
| result = std::strlen(names[code]) + 1; |
| if(buf_size >= result) |
| re_detail::strcpy_s(buf, buf_size, names[code]); |
| return result; |
| } |
| return result; |
| } |
| if(code == REG_ATOI) |
| { |
| char localbuf[5]; |
| if(e == 0) |
| return 0; |
| for(int i = 0; i <= (int)REG_E_UNKNOWN; ++i) |
| { |
| if(std::strcmp(e->re_endp, names[i]) == 0) |
| { |
| #if BOOST_WORKAROUND(BOOST_MSVC, >= 1400) && !defined(_WIN32_WCE) && !defined(UNDER_CE) |
| (::sprintf_s)(localbuf, 5, "%d", i); |
| #else |
| (std::sprintf)(localbuf, "%d", i); |
| #endif |
| if(std::strlen(localbuf) < buf_size) |
| re_detail::strcpy_s(buf, buf_size, localbuf); |
| return std::strlen(localbuf) + 1; |
| } |
| } |
| #if BOOST_WORKAROUND(BOOST_MSVC, >= 1400) && !defined(_WIN32_WCE) && !defined(UNDER_CE) |
| (::sprintf_s)(localbuf, 5, "%d", 0); |
| #else |
| (std::sprintf)(localbuf, "%d", 0); |
| #endif |
| if(std::strlen(localbuf) < buf_size) |
| re_detail::strcpy_s(buf, buf_size, localbuf); |
| return std::strlen(localbuf) + 1; |
| } |
| if(code <= (int)REG_E_UNKNOWN) |
| { |
| std::string p; |
| if((e) && (e->re_magic == magic_value)) |
| p = static_cast<c_regex_type*>(e->guts)->get_traits().error_string(static_cast< ::boost::regex_constants::error_type>(code)); |
| else |
| { |
| p = re_detail::get_default_error_string(static_cast< ::boost::regex_constants::error_type>(code)); |
| } |
| std::size_t len = p.size(); |
| if(len < buf_size) |
| { |
| re_detail::strcpy_s(buf, buf_size, p.c_str()); |
| } |
| return len + 1; |
| } |
| if(buf_size) |
| *buf = 0; |
| return 0; |
| } |
| |
| BOOST_REGEX_DECL int BOOST_REGEX_CCALL regexecA(const regex_tA* expression, const char* buf, regsize_t n, regmatch_t* array, int eflags) |
| { |
| #ifdef BOOST_MSVC |
| #pragma warning(push) |
| #pragma warning(disable:4267) |
| #endif |
| bool result = false; |
| match_flag_type flags = match_default | expression->eflags; |
| const char* end; |
| const char* start; |
| cmatch m; |
| |
| if(eflags & REG_NOTBOL) |
| flags |= match_not_bol; |
| if(eflags & REG_NOTEOL) |
| flags |= match_not_eol; |
| if(eflags & REG_STARTEND) |
| { |
| start = buf + array[0].rm_so; |
| end = buf + array[0].rm_eo; |
| } |
| else |
| { |
| start = buf; |
| end = buf + std::strlen(buf); |
| } |
| |
| #ifndef BOOST_NO_EXCEPTIONS |
| try{ |
| #endif |
| if(expression->re_magic == magic_value) |
| { |
| result = regex_search(start, end, m, *static_cast<c_regex_type*>(expression->guts), flags); |
| } |
| else |
| return result; |
| #ifndef BOOST_NO_EXCEPTIONS |
| } catch(...) |
| { |
| return REG_E_UNKNOWN; |
| } |
| #endif |
| |
| if(result) |
| { |
| // extract what matched: |
| std::size_t i; |
| for(i = 0; (i < n) && (i < expression->re_nsub + 1); ++i) |
| { |
| array[i].rm_so = (m[i].matched == false) ? -1 : (m[i].first - buf); |
| array[i].rm_eo = (m[i].matched == false) ? -1 : (m[i].second - buf); |
| } |
| // and set anything else to -1: |
| for(i = expression->re_nsub + 1; i < n; ++i) |
| { |
| array[i].rm_so = -1; |
| array[i].rm_eo = -1; |
| } |
| return 0; |
| } |
| return REG_NOMATCH; |
| #ifdef BOOST_MSVC |
| #pragma warning(pop) |
| #endif |
| } |
| |
| BOOST_REGEX_DECL void BOOST_REGEX_CCALL regfreeA(regex_tA* expression) |
| { |
| if(expression->re_magic == magic_value) |
| { |
| delete static_cast<c_regex_type*>(expression->guts); |
| } |
| expression->re_magic = 0; |
| } |
| |
| } // namespace boost |
| |
| |
| |
| |