/*============================================================================= | |
Boost.Wave: A Standard compliant C++ preprocessor library | |
http://www.boost.org/ | |
Copyright (c) 2001-2011 Hartmut Kaiser. Distributed under 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) | |
=============================================================================*/ | |
#if !defined(TIME_CONVERSION_HELPER_HPP_DA97E389_1797_43BA_82AE_B071064B3EF4_INCLUDED) | |
#define TIME_CONVERSION_HELPER_HPP_DA97E389_1797_43BA_82AE_B071064B3EF4_INCLUDED | |
#include <ctime> | |
#include <cstring> | |
#include <boost/config.hpp> | |
#include <boost/spirit/include/classic_core.hpp> | |
#include <boost/spirit/include/classic_symbols.hpp> | |
#include <boost/spirit/include/classic_assign_actor.hpp> | |
#include <boost/spirit/include/classic_push_back_actor.hpp> | |
#if !defined(spirit_append_actor) | |
#define spirit_append_actor(actor) boost::spirit::classic::push_back_a(actor) | |
#define spirit_assign_actor(actor) boost::spirit::classic::assign_a(actor) | |
#endif // !defined(spirit_append_actor) | |
// this must occur after all of the includes and before any code appears | |
#ifdef BOOST_HAS_ABI_HEADERS | |
#include BOOST_ABI_PREFIX | |
#endif | |
/////////////////////////////////////////////////////////////////////////////// | |
namespace boost { | |
namespace wave { | |
namespace util { | |
namespace time_conversion { | |
using namespace std; // some systems have std::tm etc. in namespace std | |
/////////////////////////////////////////////////////////////////////////////// | |
// define, whether the rule's should generate some debug output | |
#define TRACE_CPP_TIME_CONVERSION \ | |
(BOOST_SPIRIT_DEBUG_FLAGS_CPP & BOOST_SPIRIT_DEBUG_FLAGS_TIME_CONVERSION) \ | |
/**/ | |
/////////////////////////////////////////////////////////////////////////////// | |
// Grammar for parsing a date/time string generated by the C++ compiler from | |
// __DATE__ and __TIME__ | |
class time_conversion_grammar : | |
public boost::spirit::classic::grammar<time_conversion_grammar> | |
{ | |
public: | |
time_conversion_grammar() : fYearIsCorrected(false) | |
{ | |
using namespace std; // some systems have memset in std | |
memset (&time_stamp, 0, sizeof(tm)); | |
BOOST_SPIRIT_DEBUG_TRACE_RULE_NAME(*this, "time_conversion_grammar", | |
TRACE_CPP_TIME_CONVERSION); | |
} | |
template <typename ScannerT> | |
struct definition { | |
definition(time_conversion_grammar const &self) | |
{ | |
using boost::spirit::classic::int_p; | |
using boost::spirit::classic::add; | |
char const *m[] = { | |
"Jan", "Feb", "Mar", "Apr", "May", "Jun", | |
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" | |
}; | |
for (int i = 0; i < 12; ++i) | |
add (month, m[i], i); | |
time_rule // expected format is 'Dec 29 2001 11:23:59' | |
= month[spirit_assign_actor(self.time_stamp.tm_mon)] | |
>> int_p[spirit_assign_actor(self.time_stamp.tm_mday)] | |
>> int_p[spirit_assign_actor(self.time_stamp.tm_year)] | |
>> int_p[spirit_assign_actor(self.time_stamp.tm_hour)] >> ':' | |
>> int_p[spirit_assign_actor(self.time_stamp.tm_min)] >> ':' | |
>> int_p[spirit_assign_actor(self.time_stamp.tm_sec)] | |
; | |
BOOST_SPIRIT_DEBUG_TRACE_RULE(time_rule, TRACE_CPP_TIME_CONVERSION); | |
} | |
boost::spirit::classic::rule<ScannerT> time_rule; | |
boost::spirit::classic::symbols<> month; | |
boost::spirit::classic::rule<ScannerT> const& | |
start() const { return time_rule; } | |
}; | |
void correct_year() | |
{ | |
if (!fYearIsCorrected) { | |
time_stamp.tm_year -= 1900; | |
fYearIsCorrected = true; | |
} | |
} | |
mutable tm time_stamp; | |
bool fYearIsCorrected; | |
}; | |
/////////////////////////////////////////////////////////////////////////////// | |
// calculate the time of the compilation as a std::time_t to ensure correctness | |
// of the saved dfa table | |
class time_conversion_helper | |
{ | |
public: | |
time_conversion_helper(char const *act_time) : compile_time(0) | |
{ | |
using namespace boost::spirit::classic; | |
time_conversion_grammar g; | |
parse_info<> pi = parse (act_time, g, space_p); | |
if (pi.hit) { | |
g.correct_year(); | |
compile_time = mktime(&g.time_stamp); | |
} | |
BOOST_ASSERT(0 != compile_time); | |
} | |
time_t get_time() const { return compile_time; } | |
private: | |
time_t compile_time; | |
}; | |
/////////////////////////////////////////////////////////////////////////////// | |
#undef TRACE_CPP_TIME_CONVERSION | |
} // namespace time_conversion | |
// import time_conversion into the boost::wave::util namespace | |
using namespace time_conversion; | |
/////////////////////////////////////////////////////////////////////////////// | |
} // namespace util | |
} // namespace wave | |
} // namespace boost | |
// the suffix header occurs after all of the code | |
#ifdef BOOST_HAS_ABI_HEADERS | |
#include BOOST_ABI_SUFFIX | |
#endif | |
#endif // !defined(TIME_CONVERSION_HELPER_HPP_DA97E389_1797_43BA_82AE_B071064B3EF4_INCLUDED) |