98 lines
2.0 KiB
C++
98 lines
2.0 KiB
C++
///////////////////////////////////////////////////////////////
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// Copyright 2015 John Maddock. Distributed under the Boost
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// 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_
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//
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#ifdef TEST_POSIX
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#include "performance.hpp"
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#include <boost/lexical_cast.hpp>
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#include <regex.h>
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struct posix_regex : public abstract_regex
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{
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private:
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regex_t pe, pe2;
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bool init;
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public:
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posix_regex() : init(false) {}
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~posix_regex()
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{
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if(init)
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{
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regfree(&pe);
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regfree(&pe2);
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}
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}
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virtual bool set_expression(const char* pat, bool isperl)
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{
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if(isperl)
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return false;
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if(init)
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{
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regfree(&pe);
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regfree(&pe2);
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}
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else
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init = true;
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int r = regcomp(&pe, pat, REG_EXTENDED);
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std::string s(pat);
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if(s.size() && (s[0] != '^'))
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s.insert(0, 1, '^');
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if(s.size() && (*s.rbegin() != '$'))
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s.append("$");
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r |= regcomp(&pe2, s.c_str(), REG_EXTENDED);
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return r ? false : true;
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}
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virtual bool match_test(const char* text);
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virtual unsigned find_all(const char* text);
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virtual std::string name();
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struct initializer
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{
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initializer()
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{
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posix_regex::register_instance(boost::shared_ptr<abstract_regex>(new posix_regex));
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}
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void do_nothing()const {}
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};
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static const initializer init2;
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};
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const posix_regex::initializer posix_regex::init2;
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bool posix_regex::match_test(const char * text)
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{
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regmatch_t m[30];
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int r = regexec(&pe2, text, 30, m, 0);
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return r == 0;
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}
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unsigned posix_regex::find_all(const char * text)
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{
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unsigned count = 0;
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regmatch_t m[30];
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int flags = 0;
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while(regexec(&pe, text, 30, m, flags) == 0)
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{
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++count;
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text += m[0].rm_eo;
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if(m[0].rm_eo - m[0].rm_so)
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flags = *(text - 1) == '\n' ? 0 : REG_NOTBOL;
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else
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flags = 0;
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}
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return 0;
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}
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std::string posix_regex::name()
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{
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init2.do_nothing();
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return "POSIX";
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}
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#endif
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