00001 #pragma ident "$Id: UnixTime.cpp 3178 2012-06-29 16:32:18Z snelsen $"
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00041 #include "UnixTime.hpp"
00042 #include "TimeConstants.hpp"
00043
00044 namespace gpstk
00045 {
00046 UnixTime& UnixTime::operator=( const UnixTime& right )
00047 throw()
00048 {
00049 tv.tv_sec = right.tv.tv_sec ;
00050 tv.tv_usec = right.tv.tv_usec;
00051 timeSystem = right.timeSystem;
00052 return *this;
00053 }
00054
00055 CommonTime UnixTime::convertToCommonTime() const
00056 throw( gpstk::InvalidRequest )
00057 {
00058 try
00059 {
00060 CommonTime ct;
00061 return ct.set( ( MJD_JDAY + UNIX_MJD + tv.tv_sec / SEC_PER_DAY ),
00062 ( tv.tv_sec % SEC_PER_DAY ),
00063 ( static_cast<double>( tv.tv_usec ) * 1e-6 ),
00064 timeSystem );
00065 }
00066 catch (InvalidParameter& ip)
00067 {
00068 InvalidRequest ir(ip);
00069 GPSTK_THROW(ip);
00070 }
00071 }
00072
00073 void UnixTime::convertFromCommonTime( const CommonTime& ct )
00074 throw( gpstk::InvalidRequest )
00075 {
00077 static const CommonTime MIN_CT = UnixTime(0, 0, TimeSystem::Any);
00080 static const CommonTime MAX_CT = UnixTime(2147483647, 999999, TimeSystem::Any);
00081
00082 if ( ct < MIN_CT || ct > MAX_CT )
00083 {
00084 InvalidRequest ir("Unable to convert given CommonTime to UnixTime.");
00085 GPSTK_THROW(ir);
00086 }
00087
00088 long jday, sod;
00089 double fsod;
00090 ct.get( jday, sod, fsod, timeSystem );
00091
00092 tv.tv_sec = (jday - MJD_JDAY - UNIX_MJD) * SEC_PER_DAY + sod;
00093
00094
00095 tv.tv_usec = static_cast<time_t>( fsod * 1e6 + 0.5 ) ;
00096
00097 if (tv.tv_usec >= 1000000)
00098 {
00099 tv.tv_usec -= 1000000;
00100 ++tv.tv_sec;
00101 }
00102 }
00103
00104 std::string UnixTime::printf( const std::string& fmt ) const
00105 throw( gpstk::StringUtils::StringException )
00106 {
00107 try
00108 {
00109 using gpstk::StringUtils::formattedPrint;
00110 std::string rv( fmt );
00111
00112 rv = formattedPrint(rv, getFormatPrefixInt() + "U",
00113 "Ulu", tv.tv_sec);
00114 rv = formattedPrint(rv, getFormatPrefixInt() + "u",
00115 "ulu", tv.tv_usec);
00116 rv = formattedPrint(rv, getFormatPrefixInt() + "P",
00117 "Ps", timeSystem.asString().c_str() );
00118 return rv;
00119 }
00120 catch( gpstk::StringUtils::StringException& se )
00121 {
00122 GPSTK_RETHROW( se );
00123 }
00124 }
00125
00126 std::string UnixTime::printError( const std::string& fmt ) const
00127 throw( gpstk::StringUtils::StringException )
00128 {
00129 try
00130 {
00131 using gpstk::StringUtils::formattedPrint;
00132 std::string rv( fmt );
00133
00134 rv = formattedPrint(rv, getFormatPrefixInt() + "U",
00135 "Us", getError().c_str());
00136 rv = formattedPrint(rv, getFormatPrefixInt() + "u",
00137 "us", getError().c_str());
00138 rv = formattedPrint( rv, getFormatPrefixInt() + "P",
00139 "Ps", getError().c_str());
00140 return rv;
00141 }
00142 catch( gpstk::StringUtils::StringException& se )
00143 {
00144 GPSTK_RETHROW( se );
00145 }
00146 }
00147
00148 bool UnixTime::setFromInfo( const IdToValue& info )
00149 throw()
00150 {
00151 using namespace gpstk::StringUtils;
00152
00153 for( IdToValue::const_iterator i = info.begin(); i != info.end(); i++ )
00154 {
00155 switch( i->first )
00156 {
00157 case 'U':
00158 tv.tv_sec = asInt( i->second );
00159 break;
00160
00161 case 'u':
00162 tv.tv_usec = asInt( i->second );
00163 break;
00164
00165 case 'P':
00166 timeSystem = static_cast<TimeSystem>(asInt( i->second ));
00167 break;
00168
00169 default:
00170
00171 break;
00172 };
00173 }
00174
00175 return true;
00176 }
00177
00178 bool UnixTime::isValid() const
00179 throw()
00180 {
00181 UnixTime temp;
00182 temp.convertFromCommonTime( convertToCommonTime() );
00183 if( *this == temp )
00184 {
00185 return true;
00186 }
00187 return false;
00188 }
00189
00190 void UnixTime::reset()
00191 throw()
00192 {
00193 tv.tv_sec = tv.tv_usec = 0;
00194 timeSystem = TimeSystem::Unknown;
00195 }
00196
00197 bool UnixTime::operator==( const UnixTime& right ) const
00198 throw()
00199 {
00201 if ((timeSystem != TimeSystem::Any &&
00202 right.timeSystem != TimeSystem::Any) &&
00203 timeSystem != right.timeSystem)
00204 return false;
00205
00206 if( tv.tv_sec == right.tv.tv_sec &&
00207 abs(tv.tv_usec - right.tv.tv_usec) < CommonTime::eps )
00208 {
00209 return true;
00210 }
00211 return false;
00212 }
00213
00214 bool UnixTime::operator!=( const UnixTime& right ) const
00215 throw()
00216 {
00217 return ( !operator==( right ) );
00218 }
00219
00220 bool UnixTime::operator<( const UnixTime& right ) const
00221 throw( gpstk::InvalidRequest )
00222 {
00224 if ((timeSystem != TimeSystem::Any &&
00225 right.timeSystem != TimeSystem::Any) &&
00226 timeSystem != right.timeSystem)
00227 {
00228 gpstk::InvalidRequest ir("CommonTime objects not in same time system, cannot be compared");
00229 GPSTK_THROW(ir)
00230 }
00231
00232 if( tv.tv_sec < right.tv.tv_sec )
00233 {
00234 return true;
00235 }
00236 if( tv.tv_sec == right.tv.tv_sec &&
00237 tv.tv_usec < right.tv.tv_usec )
00238 {
00239 return true;
00240 }
00241 return false;
00242 }
00243
00244 bool UnixTime::operator>( const UnixTime& right ) const
00245 throw( gpstk::InvalidRequest )
00246 {
00247 return ( !operator<=( right ) );
00248 }
00249
00250 bool UnixTime::operator<=( const UnixTime& right ) const
00251 throw( gpstk::InvalidRequest )
00252 {
00253 return ( operator<( right ) ||
00254 operator==( right ) );
00255 }
00256
00257 bool UnixTime::operator>=( const UnixTime& right ) const
00258 throw( gpstk::InvalidRequest )
00259 {
00260 return ( !operator<( right ) );
00261 }
00262
00263 }