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110 lines
3.1 KiB
110 lines
3.1 KiB
15 years ago
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/* This file is part of the KDE project
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Copyright (C) 2005 David Faure <faure@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License version 2 as published by the Free Software Foundation.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <qstring.h>
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/**
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* Routines for converting to and from the ISO-8601 duration format
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* http://www.w3.org/TR/xmlschema-2/datatypes.html#duration
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*
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* This is not the ISO time format supported by Qt (HH:MM:SS),
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* it's PT1H15M12S for 1:15:12.
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*
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*/
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static QString minutesToISODuration( int mn )
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{
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bool neg = mn < 0;
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// PT == period of time - see ISO8601
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QString str = QString::fromLatin1( "PT00H%1M00S" ).arg( QABS( mn ) );
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if ( neg )
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str.prepend( '-' );
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return str;
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}
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static QString daysToISODuration( int days )
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{
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bool neg = days < 0;
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// P == period, time is ommitted - see ISO8601
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QString str = QString::fromLatin1( "P%1D" ).arg( QABS( days ) );
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if ( neg )
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str.prepend( '-' );
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return str;
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}
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static int ISODurationToMinutes( const QString& str )
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{
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int idx = 0;
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const int len = str.length();
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bool neg = str[idx] == '-';
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if ( neg )
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++idx;
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if ( idx < len && str[idx] == 'P' ) // should always be true
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++idx;
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if ( idx < len && str[idx] == 'T' )
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++idx;
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int minutes = 0;
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int currentNum = 0;
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while ( idx < len ) {
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if ( str[idx].isDigit() )
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currentNum = currentNum * 10 + str[idx].latin1() - '0';
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else {
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if ( str[idx] == 'D' )
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minutes += 24 * 60 * currentNum;
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else if ( str[idx] == 'H' )
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minutes += 60 * currentNum;
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else if ( str[idx] == 'M' )
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minutes += currentNum;
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currentNum = 0;
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}
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++idx;
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}
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return neg ? -minutes : minutes;
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}
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static int ISODurationToDays( const QString& str )
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{
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int idx = 0;
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const int len = str.length();
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bool neg = str[idx] == '-';
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if ( neg )
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++idx;
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if ( idx < len && str[idx] == 'P' ) // should always be true
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++idx;
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if ( idx < len && str[idx] == 'T' )
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++idx;
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int days = 0;
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int currentNum = 0;
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while ( idx < len ) {
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if ( str[idx].isDigit() )
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currentNum = currentNum * 10 + str[idx].latin1() - '0';
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else {
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if ( str[idx] == 'Y' )
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days += 365 * currentNum;
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else if ( str[idx] == 'M' )
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days += 30 * currentNum; // approx
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else if ( str[idx] == 'D' )
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days += currentNum;
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currentNum = 0;
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}
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++idx;
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}
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return neg ? -days : days;
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}
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