src/TortoiseProc/LoglistUtils.cpp

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2008-2012 - TortoiseGit
   4 // Copyright (C) 2003-2008 - TortoiseSVN
   5
   6 // This program is free software; you can redistribute it and/or
   7 // modify it under the terms of the GNU General Public License
   8 // as published by the Free Software Foundation; either version 2
   9 // of the License, or (at your option) any later version.
  10
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this program; if not, write to the Free Software Foundation,
  18 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 //
  20 #include "stdafx.h"
  21 #include <math.h>
  22 #include "..\Resources\LoglistCommonResource.h"
  23 #include "LoglistUtils.h"
  24 #include "registry.h"
  25
  26 CLoglistUtils::CLoglistUtils(void)
  27 {
  28 }
  29
  30 CLoglistUtils::~CLoglistUtils(void)
  31 {
  32 }
  33
  34 /**
  35  * FUNCTION    :   FormatDateAndTime
  36  * DESCRIPTION :   Generates a displayable string from a CTime object in
  37  *                 system short or long format  or as a relative value
  38  *                                 cTime - the time
  39  *                                 option - DATE_SHORTDATE or DATE_LONGDATE
  40  *                                 bIncluedeTime - whether to show time as well as date
  41  *                                 bRelative - if true then relative time is shown if reasonable
  42  *                                 If HKCU\Software\TortoiseGit\UseSystemLocaleForDates is 0 then use fixed format
  43  *                                 rather than locale
  44  * RETURN      :   CString containing date/time
  45  */
  46 CString CLoglistUtils::FormatDateAndTime(const CTime& cTime, DWORD option, bool bIncludeTime /*=true*/, bool bRelative /*=false*/)
  47 {
  48         if (bRelative)
  49         {
  50                 return ToRelativeTimeString(cTime);
  51         }
  52         else
  53         {
  54                 // should we use the locale settings for formatting the date/time?
  55                 if (CRegDWORD(_T("Software\\TortoiseGit\\UseSystemLocaleForDates"), TRUE))
  56                 {
  57                         // yes
  58                         SYSTEMTIME sysTime;
  59                         cTime.GetAsSystemTime(sysTime);
  60
  61                         TCHAR buf[100];
  62
  63                         GetDateFormat(LOCALE_USER_DEFAULT, option, &sysTime, NULL, buf, _countof(buf) - 1);
  64                         CString datetime = buf;
  65                         if (bIncludeTime)
  66                         {
  67                                 datetime += _T(" ");
  68                                 GetTimeFormat(LOCALE_USER_DEFAULT, 0, &sysTime, NULL, buf, _countof(buf) - 1);
  69                                 datetime += buf;
  70                         }
  71                         return datetime;
  72                 }
  73                 else
  74                 {
  75                         // no, so fixed format
  76                         if (bIncludeTime)
  77                         {
  78                                 return cTime.Format(_T("%Y-%m-%d %H:%M:%S"));
  79                         }
  80                         else
  81                         {
  82                                 return cTime.Format(_T("%Y-%m-%d"));
  83                         }
  84                 }
  85         }
  86 }
  87
  88 /**
  89  *      Converts a given time to a relative display string (relative to current time)
  90  *      Given time must be in local timezone
  91  */
  92 CString CLoglistUtils::ToRelativeTimeString(CTime time)
  93 {
  94         // convert to COleDateTime
  95         SYSTEMTIME sysTime;
  96         time.GetAsSystemTime(sysTime);
  97         COleDateTime oleTime(sysTime);
  98         return ToRelativeTimeString(oleTime, COleDateTime::GetCurrentTime());
  99 }
 100
 101 /**
 102  *      Generates a display string showing the relative time between the two given times as COleDateTimes
 103  */
 104 CString CLoglistUtils::ToRelativeTimeString(COleDateTime time,COleDateTime RelativeTo)
 105 {
 106         COleDateTimeSpan ts = RelativeTo - time;
 107
 108         //years
 109         if(fabs(ts.GetTotalDays()) >= 3 * 365)
 110                 return ExpandRelativeTime((int)ts.GetTotalDays()/365, IDS_YEAR_AGO, IDS_YEARS_AGO);
 111
 112         //Months
 113         if(fabs(ts.GetTotalDays()) >= 60)
 114                 return ExpandRelativeTime((int)ts.GetTotalDays()/30, IDS_MONTH_AGO, IDS_MONTHS_AGO);
 115
 116         //Weeks
 117         if(fabs(ts.GetTotalDays()) >= 14)
 118                 return ExpandRelativeTime((int)ts.GetTotalDays()/7, IDS_WEEK_AGO, IDS_WEEKS_AGO);
 119
 120         //Days
 121         if(fabs(ts.GetTotalDays()) >= 2)
 122                 return ExpandRelativeTime((int)ts.GetTotalDays(), IDS_DAY_AGO, IDS_DAYS_AGO);
 123
 124         //hours
 125         if(fabs(ts.GetTotalHours()) >= 2)
 126                 return ExpandRelativeTime((int)ts.GetTotalHours(), IDS_HOUR_AGO, IDS_HOURS_AGO);
 127
 128         //minutes
 129         if(fabs(ts.GetTotalMinutes()) >= 2)
 130                 return ExpandRelativeTime((int)ts.GetTotalMinutes(), IDS_MINUTE_AGO, IDS_MINUTES_AGO);
 131
 132         //seconds
 133         return ExpandRelativeTime((int)ts.GetTotalSeconds(), IDS_SECOND_AGO, IDS_SECONDS_AGO);
 134 }
 135
 136 /**
 137  * Passed a value and two resource string ids
 138  * if count is 1 then FormatString is called with format_1 and the value
 139  * otherwise format_2 is used
 140  * the formatted string is returned
 141 */
 142 CString CLoglistUtils::ExpandRelativeTime(int count, UINT format_1, UINT format_n)
 143 {
 144         CString answer;
 145         if (count == 1)
 146                 answer.FormatMessage(format_1, count);
 147         else
 148                 answer.FormatMessage(format_n, count);
 149
 150         return answer;
 151 }