PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // PDateTime 00004 // Copyright (c) 2002 by Nicolas Chapados 00005 00006 // Redistribution and use in source and binary forms, with or without 00007 // modification, are permitted provided that the following conditions are met: 00008 // 00009 // 1. Redistributions of source code must retain the above copyright 00010 // notice, this list of conditions and the following disclaimer. 00011 // 00012 // 2. Redistributions in binary form must reproduce the above copyright 00013 // notice, this list of conditions and the following disclaimer in the 00014 // documentation and/or other materials provided with the distribution. 00015 // 00016 // 3. The name of the authors may not be used to endorse or promote 00017 // products derived from this software without specific prior written 00018 // permission. 00019 // 00020 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00021 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00022 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00023 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00024 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00025 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00026 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00027 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00028 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00029 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00030 // 00031 // This file is part of the PLearn library. For more information on the PLearn 00032 // library, go to the PLearn Web site at www.plearn.org 00033 00034 /* ******************************************************* 00035 * $Id: PDateTime.h 8243 2007-11-12 18:11:30Z nouiz $ 00036 * This file is part of the PLearn library. 00037 ******************************************************* */ 00038 00039 00042 #ifndef PDateTime_INC 00043 #define PDateTime_INC 00044 00045 #include <iostream> 00046 #include <string> 00047 00048 namespace PLearn { 00049 using namespace std; 00050 00051 #define SECONDS_PER_DAY 86400 // 24*60*60 00052 00062 class PDateTime 00063 { 00064 public: 00065 short year; 00066 unsigned char month; 00067 unsigned char day; 00068 unsigned char hour; 00069 unsigned char min; 00070 unsigned char sec; 00071 00073 PDateTime(); 00074 00076 PDateTime(short the_year, unsigned char the_month, unsigned char the_day) 00077 : year(the_year), month(the_month), day(the_day), 00078 hour(0), min(0), sec(0) {} 00079 00080 PDateTime(int the_year, int the_month, int the_day) 00081 : year(the_year), month(int(the_month)), day(int(the_day)), 00082 hour(0), min(0), sec(0) {} 00083 00085 PDateTime(short the_year, unsigned char the_month, unsigned char the_day, 00086 unsigned char the_hour, unsigned char the_min, 00087 unsigned char the_sec) 00088 : year(the_year), month(the_month), day(the_day), 00089 hour(the_hour), min(the_min), sec(the_sec) {} 00090 00091 PDateTime(int the_year, int the_month, int the_day, 00092 int the_hour, int the_min, int the_sec) 00093 : year(the_year), month(the_month), day(the_day), 00094 hour(the_hour), min(the_min), sec(the_sec) {} 00095 00099 PDateTime(double julian_day); 00100 00103 PDateTime(string datetime); 00104 00106 bool isMissing() const; 00107 void setMissing(); 00108 00110 string info() const; 00111 00113 bool operator==(const PDateTime& rhs) const { 00114 return year == rhs.year && month == rhs.month && day == rhs.day 00115 && hour == rhs.hour && min == rhs.min && sec == rhs.sec; 00116 } 00117 00118 bool operator!=(const PDateTime& rhs) const { 00119 return ! (*this == rhs); 00120 } 00121 00122 bool operator<(const PDateTime& rhs) const { 00123 double datetime_to_double(const PDateTime& t); // declare the function 00124 return datetime_to_double(*this) < datetime_to_double(rhs); 00125 } 00126 00127 bool operator<=(const PDateTime& rhs) const { 00128 return *this == rhs || *this < rhs; 00129 } 00130 00131 bool operator>(const PDateTime& rhs) const { 00132 return ! (*this <= rhs); 00133 } 00134 00135 bool operator>=(const PDateTime& rhs) const { 00136 return ! (*this < rhs); 00137 } 00138 00139 bool sameDay(const PDateTime& rhs) const { 00140 return day == rhs.day && month == rhs.month && year == rhs.year; 00141 } 00142 00147 double toJulianDay() const; 00148 00150 void incSecond (int sec_inc); 00152 void incMinute (int min_inc); 00154 void incHour (int hour_inc); 00156 void incDay (int day_inc); 00157 00160 static PDateTime currentLocalTime(); 00161 }; 00162 00164 inline double operator-(const PDateTime& to_date, const PDateTime& from_date) 00165 { 00166 return to_date.toJulianDay() - from_date.toJulianDay(); 00167 } 00168 00169 inline ostream& operator<<(ostream& os, const PDateTime& date) 00170 { 00171 os << date.info(); 00172 return os; 00173 } 00174 00179 double datetime_to_double(const PDateTime& t); 00180 PDateTime double_to_datetime(double f); 00181 00183 double hhmmss_to_double(int hh, int mm, int ss); 00184 00186 void double_to_hhmmss(double fraction, int& hh, int& mm, int& ss); 00187 00190 int delta_seconds(const PDateTime& current, const PDateTime& past); 00191 00192 } // end of namespace PLearn 00193 00194 #endif 00195 00196 00197 /* 00198 Local Variables: 00199 mode:c++ 00200 c-basic-offset:4 00201 c-file-style:"stroustrup" 00202 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00203 indent-tabs-mode:nil 00204 fill-column:79 00205 End: 00206 */ 00207 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :