tools/source/datetime/datetimeutils.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <tools/datetimeutils.hxx>
  11 #include <rtl/strbuf.hxx>
  12 #include <rtl/ustrbuf.hxx>
  13
  14
  15 /// Append the number as 2-digit when less than 10.
  16 template<class TStringBuffer>
  17 static void lcl_AppendTwoDigits( TStringBuffer &rBuffer, sal_Int32 nNum )
  18 {
  19     if ( nNum < 0 || nNum > 99 )
  20     {
  21         rBuffer.append( "00" );
  22         return;
  23     }
  24
  25     if ( nNum < 10 )
  26         rBuffer.append( '0' );
  27
  28     rBuffer.append( nNum );
  29 }
  30
  31 template<class TString, class TStringBuffer>
  32 static TString DateTimeToStringImpl( const DateTime& rDateTime )
  33 {
  34     const DateTime& aInUTC( rDateTime );
  35 // HACK: this is correct according to the spec, but MSOffice believes everybody lives
  36 // in UTC+0 when reading it back
  37 //    aInUTC.ConvertToUTC();
  38
  39     TStringBuffer aBuffer( 25 );
  40     aBuffer.append( sal_Int32( aInUTC.GetYear() ) );
  41     aBuffer.append( '-' );
  42
  43     lcl_AppendTwoDigits( aBuffer, aInUTC.GetMonth() );
  44     aBuffer.append( '-' );
  45
  46     lcl_AppendTwoDigits( aBuffer, aInUTC.GetDay() );
  47     aBuffer.append( 'T' );
  48
  49     lcl_AppendTwoDigits( aBuffer, aInUTC.GetHour() );
  50     aBuffer.append( ':' );
  51
  52     lcl_AppendTwoDigits( aBuffer, aInUTC.GetMin() );
  53     aBuffer.append( ':' );
  54
  55     lcl_AppendTwoDigits( aBuffer, aInUTC.GetSec() );
  56     aBuffer.append( 'Z' ); // we are in UTC
  57
  58     return aBuffer.makeStringAndClear();
  59 }
  60
  61 OString DateTimeToOString( const DateTime& rDateTime )
  62 {
  63     return DateTimeToStringImpl<OString,OStringBuffer>(rDateTime);
  64 }
  65
  66 OUString DateTimeToOUString( const DateTime& rDateTime )
  67 {
  68     return DateTimeToStringImpl<OUString,OUStringBuffer>(rDateTime);
  69 }
  70
  71 OString DateToOString( const Date& rDate )
  72 {
  73     tools::Time aTime( tools::Time::EMPTY );
  74     return DateTimeToOString( DateTime( rDate, aTime ) );
  75 }
  76
  77 OUString DateToDDMMYYYYOUString( const Date& rDate )
  78 {
  79     OUStringBuffer aBuffer( 25 );
  80     lcl_AppendTwoDigits( aBuffer, rDate.GetDay() );
  81     aBuffer.append( '/' );
  82
  83     lcl_AppendTwoDigits( aBuffer, rDate.GetMonth() );
  84     aBuffer.append( '/' );
  85
  86     aBuffer.append( sal_Int32( rDate.GetYear() ) );
  87
  88     return aBuffer.makeStringAndClear();
  89 }
  90
  91 std::ostream& operator<<(std::ostream& os, const Date& rDate)
  92 {
  93     os << rDate.GetYear() << "-" << rDate.GetMonth() << "-" << rDate.GetDay();
  94     return os;
  95 }