source/time/timedelta.cpp

   1 /*
   2 This file is part of libmspcore
   3 Copyright © 2006  Mikko Rasa, Mikkosoft Productions
   4 Distributed under the LGPL
   5 */
   6 #include <sstream>
   7 #include <iomanip>
   8 #include "timedelta.h"
   9 #include "units.h"
  10
  11 using namespace std;
  12
  13 namespace {
  14
  15 void print_part(ostream &out, int64_t &value, int64_t unit, char sep, bool &first)
  16 {
  17         if(!value || (value<unit && first))
  18                 return;
  19
  20         if(!first)
  21                 out<<sep<<setw(2);
  22
  23         out<<value/unit;
  24         value%=unit;
  25         first=false;
  26 }
  27
  28 }
  29
  30 namespace Msp {
  31 namespace Time {
  32
  33 ostream &operator<<(ostream &out, const TimeDelta &td)
  34 {
  35         ostringstream ss;
  36         ss.fill('0');
  37
  38         int64_t value=td.raw();
  39
  40         if(value<0)
  41         {
  42                 ss<<'-';
  43                 value=-value;
  44         }
  45
  46         if(value==0)
  47                 ss<<'0';
  48         else if(value<1000)
  49                 ss<<value<<"µs";
  50         else if(value<1000000)
  51         {
  52                 ss<<value/1000;
  53                 value%=1000;
  54                 if(value)
  55                         ss<<'.'<<setw(3)<<value;
  56                 ss<<"ms";
  57         }
  58         else
  59         {
  60                 bool first=true;
  61                 print_part(ss, value, 86400000000LL,  0,  first);
  62                 print_part(ss, value, 3600000000LL,  '-', first);
  63                 print_part(ss, value, 60000000LL,    ':', first);
  64                 print_part(ss, value, 1000000LL,     ':', first);
  65
  66                 if(value)
  67                 {
  68                         ss<<'.';
  69                         if(value%1000)
  70                                 ss<<setw(6)<<value;
  71                         else
  72                                 ss<<setw(3)<<value/1000;
  73                 }
  74                 ss<<"s";
  75         }
  76
  77         out<<ss.str();
  78
  79         return out;
  80 }
  81
  82 } // namespace Time
  83 } // namespace Msp