src/TortoiseGitBlame/TortoiseGitBlameAppUtils.cpp

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2003-2011 - TortoiseGit
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 #include "StdAfx.h"
  20 #include "math.h"
  21 #include "..\Resources\LoglistCommonResource.h"
  22 #include "TortoiseGitBlameAppUtils.h"
  23 #include "Registry.h"
  24
  25 CAppUtils::CAppUtils(void)
  26 {
  27 }
  28
  29 CAppUtils::~CAppUtils(void)
  30 {
  31 }
  32
  33 /**
  34  * FUNCTION    :   FormatDateAndTime
  35  * DESCRIPTION :   Generates a displayable string from a CTime object in
  36  *                 system short or long format  or as a relative value
  37  *                                 cTime - the time
  38  *                                 option - DATE_SHORTDATE or DATE_LONGDATE
  39  *                                 bIncluedeTime - whether to show time as well as date
  40  *                                 bRelative - if true then relative time is shown if reasonable
  41  *                                 If HKCU\Software\TortoiseGit\UseSystemLocaleForDates is 0 then use fixed format
  42  *                                 rather than locale
  43  * RETURN      :   CString containing date/time
  44  */
  45 CString CAppUtils::FormatDateAndTime( const CTime& cTime, DWORD option, bool bIncludeTime /*=true*/,
  46         bool bRelative /*=false*/)
  47 {
  48         CString datetime;
  49         if ( bRelative )
  50         {
  51                 datetime = ToRelativeTimeString( cTime );
  52         }
  53         else
  54         {
  55                 // should we use the locale settings for formatting the date/time?
  56                 if (CRegDWORD(_T("Software\\TortoiseGit\\UseSystemLocaleForDates"), TRUE))
  57                 {
  58                         // yes
  59                         SYSTEMTIME sysTime;
  60                         cTime.GetAsSystemTime( sysTime );
  61
  62                         TCHAR buf[100];
  63
  64                         GetDateFormat(LOCALE_USER_DEFAULT, option, &sysTime, NULL, buf,
  65                                 _countof(buf) - 1);
  66                         datetime = buf;
  67                         if ( bIncludeTime )
  68                         {
  69                                 datetime += _T(" ");
  70                                 GetTimeFormat(LOCALE_USER_DEFAULT, 0, &sysTime, NULL, buf, _countof(buf) - 1);
  71                                 datetime += buf;
  72                         }
  73                 }
  74                 else
  75                 {
  76                         // no, so fixed format
  77                         if ( bIncludeTime )
  78                         {
  79                                 datetime = cTime.Format(_T("%Y-%m-%d %H:%M:%S"));
  80                         }
  81                         else
  82                         {
  83                                 datetime = cTime.Format(_T("%Y-%m-%d"));
  84                         }
  85                 }
  86         }
  87         return datetime;
  88 }
  89
  90 /**
  91  *      Converts a given time to a relative display string (relative to current time)
  92  *      Given time must be in local timezone
  93  */
  94 CString CAppUtils::ToRelativeTimeString(CTime time)
  95 {
  96         CString answer;
  97         // convert to COleDateTime
  98         SYSTEMTIME sysTime;
  99         time.GetAsSystemTime( sysTime );
 100         COleDateTime oleTime( sysTime );
 101         answer = ToRelativeTimeString(oleTime, COleDateTime::GetCurrentTime());
 102         return answer;
 103 }
 104
 105 /**
 106  *      Generates a display string showing the relative time between the two given times as COleDateTimes
 107  */
 108 CString CAppUtils::ToRelativeTimeString(COleDateTime time,COleDateTime RelativeTo)
 109 {
 110         CString answer;
 111         COleDateTimeSpan ts = RelativeTo - time;
 112         //years
 113         if(fabs(ts.GetTotalDays()) >= 3*365)
 114         {
 115                 answer = ExpandRelativeTime( (int)ts.GetTotalDays()/365, IDS_YEAR_AGO, IDS_YEARS_AGO );
 116         }
 117         //Months
 118         if(fabs(ts.GetTotalDays()) >= 60)
 119         {
 120                 answer = ExpandRelativeTime( (int)ts.GetTotalDays()/30, IDS_MONTH_AGO, IDS_MONTHS_AGO );
 121                 return answer;
 122         }
 123         //Weeks
 124         if(fabs(ts.GetTotalDays()) >= 14)
 125         {
 126                 answer = ExpandRelativeTime( (int)ts.GetTotalDays()/7, IDS_WEEK_AGO, IDS_WEEKS_AGO );
 127                 return answer;
 128         }
 129         //Days
 130         if(fabs(ts.GetTotalDays()) >= 2)
 131         {
 132                 answer = ExpandRelativeTime( (int)ts.GetTotalDays(), IDS_DAY_AGO, IDS_DAYS_AGO );
 133                 return answer;
 134         }
 135         //hours
 136         if(fabs(ts.GetTotalHours()) >= 2)
 137         {
 138                 answer = ExpandRelativeTime( (int)ts.GetTotalHours(), IDS_HOUR_AGO, IDS_HOURS_AGO );
 139                 return answer;
 140         }
 141         //minutes
 142         if(fabs(ts.GetTotalMinutes()) >= 2)
 143         {
 144                 answer = ExpandRelativeTime( (int)ts.GetTotalMinutes(), IDS_MINUTE_AGO, IDS_MINUTES_AGO );
 145                 return answer;
 146         }
 147         //seconds
 148                 answer = ExpandRelativeTime( (int)ts.GetTotalSeconds(), IDS_SECOND_AGO, IDS_SECONDS_AGO );
 149         return answer;
 150 }
 151
 152 /**
 153  * Passed a value and two resource string ids
 154  * if count is 1 then FormatString is called with format_1 and the value
 155  * otherwise format_2 is used
 156  * the formatted string is returned
 157 */
 158 CString CAppUtils::ExpandRelativeTime( int count, UINT format_1, UINT format_n )
 159 {
 160         CString answer;
 161         if ( count == 1 )
 162         {
 163                 answer.FormatMessage( format_1, count );
 164         }
 165         else
 166         {
 167                 answer.FormatMessage( format_n, count );
 168         }
 169         return answer;
 170 }
 171