Dogcows Code - chaz/yoink/blob - src/stlplus/portability/time.cpp

   1 ////////////////////////////////////////////////////////////////////////////////
   2
   3 //   Author:    Andy Rushton
   4 //   Copyright: (c) Southampton University 1999-2004
   5 //              (c) Andy Rushton           2004 onwards
   6 //   License:   BSD License, see ../docs/license.html
   7
   8 ////////////////////////////////////////////////////////////////////////////////
   9 #include "time.hpp"
  10 #include "dprintf.hpp"
  11 #include <ctype.h>
  12 ////////////////////////////////////////////////////////////////////////////////
  13
  14 namespace stlplus
  15 {
  16
  17   ////////////////////////////////////////////////////////////////////////////////
  18
  19   time_t time_now(void)
  20   {
  21     return time(0);
  22   }
  23
  24   time_t localtime_create(int year, int month, int day, int hour, int minute, int second)
  25   {
  26     tm tm_time;
  27     tm_time.tm_year = year-1900;  // years are represented as an offset from 1900, for reasons unknown
  28     tm_time.tm_mon = month-1;     // internal format represents month as 0-11, but it is friendlier to take an input 1-12
  29     tm_time.tm_mday = day;
  30     tm_time.tm_hour = hour;
  31     tm_time.tm_min = minute;
  32     tm_time.tm_sec = second;
  33     tm_time.tm_isdst = -1;        // specify that the function should work out daylight savings
  34     time_t result = mktime(&tm_time);
  35     return result;
  36   }
  37
  38   int localtime_year(time_t t)
  39   {
  40     tm* tm_time = localtime(&t);
  41     return tm_time->tm_year + 1900;
  42   }
  43
  44   int localtime_month(time_t t)
  45   {
  46     tm* tm_time = localtime(&t);
  47     return tm_time->tm_mon + 1;
  48   }
  49
  50   int localtime_day(time_t t)
  51   {
  52     tm* tm_time = localtime(&t);
  53     return tm_time->tm_mday;
  54   }
  55
  56   int localtime_hour(time_t t)
  57   {
  58     tm* tm_time = localtime(&t);
  59     return tm_time->tm_hour;
  60   }
  61
  62   int localtime_minute(time_t t)
  63   {
  64     tm* tm_time = localtime(&t);
  65     return tm_time->tm_min;
  66   }
  67
  68   int localtime_second(time_t t)
  69   {
  70     tm* tm_time = localtime(&t);
  71     return tm_time->tm_sec;
  72   }
  73
  74   int localtime_weekday(time_t t)
  75   {
  76     tm* tm_time = localtime(&t);
  77     return tm_time->tm_wday;
  78   }
  79
  80   int localtime_yearday(time_t t)
  81   {
  82     tm* tm_time = localtime(&t);
  83     return tm_time->tm_yday;
  84   }
  85
  86   std::string localtime_string(time_t t)
  87   {
  88     tm* local = localtime(&t);
  89     std::string result = local ? asctime(local) : "*time not available*";
  90     // ctime appends a newline for no apparent reason - clean up
  91     while (!result.empty() && isspace(result[result.size()-1]))
  92       result.erase(result.size()-1,1);
  93     return result;
  94   }
  95
  96   std::string delaytime_string(time_t seconds)
  97   {
  98     unsigned minutes = (unsigned)seconds / 60;
  99     seconds %= 60;
 100     unsigned hours = minutes / 60;
 101     minutes %= 60;
 102     unsigned days = hours / 24;
 103     hours %= 24;
 104     unsigned weeks = days / 7;
 105     days %= 7;
 106     std::string result;
 107     if (weeks > 0)
 108       result += dformat("%dw ",weeks);
 109     if (!result.empty() || days > 0)
 110       result += dformat("%dd ", days);
 111     if (!result.empty() || hours > 0)
 112       result += dformat("%d:", hours);
 113     if (!result.empty() || minutes > 0)
 114     {
 115       if (!result.empty())
 116         result += dformat("%02d:", minutes);
 117       else
 118         result += dformat("%d:", minutes);
 119     }
 120     if (!result.empty())
 121       result += dformat("%02d:", seconds);
 122     else
 123       result += dformat("%ds", seconds);
 124     return result;
 125   }
 126
 127   ////////////////////////////////////////////////////////////////////////////////
 128
 129 } // end namespace stlplus