source/time/timedelta.cpp

   1 /* $Id$
   2
   3 This file is part of libmspcore
   4 Copyright © 2006  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <sstream>
   9 #include <iomanip>
  10 #include "timedelta.h"
  11 #include "units.h"
  12
  13 using namespace std;
  14
  15 namespace {
  16
  17 using Msp::Time::RawTime;
  18
  19 void print_part(ostream &out, RawTime &value, RawTime unit, char sep, bool &first)
  20 {
  21         if(value<unit && first)
  22                 return;
  23
  24         if(!first)
  25                 out<<sep<<setw(2);
  26
  27         out<<value/unit;
  28         value %= unit;
  29         first = false;
  30 }
  31
  32 }
  33
  34 namespace Msp {
  35 namespace Time {
  36
  37 ostream &operator<<(ostream &out, const TimeDelta &td)
  38 {
  39         ostringstream ss;
  40         ss.fill('0');
  41
  42         RawTime value = td.raw();
  43
  44         if(value<0)
  45         {
  46                 ss<<'-';
  47                 value = -value;
  48         }
  49
  50         if(value==0)
  51                 ss<<'0';
  52         else if(value<1000)
  53                 ss<<value<<"µs";
  54         else if(value<1000000)
  55         {
  56                 ss<<value/1000;
  57                 value %= 1000;
  58                 if(value)
  59                         ss<<'.'<<setw(3)<<value;
  60                 ss<<"ms";
  61         }
  62         else
  63         {
  64                 bool first = true;
  65                 print_part(ss, value, 86400000000LL,  0,  first);
  66                 print_part(ss, value, 3600000000LL,  '-', first);
  67                 print_part(ss, value, 60000000LL,    ':', first);
  68                 print_part(ss, value, 1000000LL,     ':', first);
  69
  70                 if(value)
  71                 {
  72                         ss<<'.';
  73                         if(value%1000)
  74                                 ss<<setw(6)<<value;
  75                         else
  76                                 ss<<setw(3)<<value/1000;
  77                 }
  78                 ss<<"s";
  79         }
  80
  81         out<<ss.str();
  82
  83         return out;
  84 }
  85
  86 } // namespace Time
  87 } // namespace Msp