comparison DEPENDENCIES/generic/include/boost/wave/util/time_conversion_helper.hpp @ 16:2665513ce2d3

Add boost headers

+ /*=============================================================================
+    Boost.Wave: A Standard compliant C++ preprocessor library
+
+    http://www.boost.org/
+
+    Copyright (c) 2001-2012 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)