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diff --git a/tderesources/exchange/dateset.h b/tderesources/exchange/dateset.h
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+/*
+ This file is part of libkpimexchange.
+ Copyright (c) 2002 Jan-Pascal van Best <janpascal@vanbest.org>
+
+ This library is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Library General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or (at your
+ option) any later version.
+
+ This library is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
+ License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to the
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
+*/
+
+// $Id$
+
+#ifndef _DATESET_H
+#define _DATESET_H
+
+#include <tqdatetime.h>
+#include <tqpair.h>
+#include <tqptrlist.h>
+
+/*
+class DateRange {
+ public:
+ DateRange() { }
+ DateRange( TQDate const& from, TQDate const& to )
+ : mFrom( from ), mTo( to ) { }
+ bool operator< ( const DateRange& r ) { return mFrom < r.from(); }
+ bool contains( TQDate const& d ) { return ( mFrom <= d && d <= mTo ); }
+ bool contains( TQDate const& from, TQDate const& to ) { return ( mFrom <= from && to <= mTo ); }
+
+ TQDate from() { return mFrom; }
+ TQDate to() { return mTo; }
+
+ private:
+ TQDate mFrom;
+ TQDate mTo;
+}
+*/
+
+class RangeList : public TQPtrList< TQPair<TQDate, TQDate> > {
+ protected:
+ virtual int compareItems(TQPtrCollection::Item item1, TQPtrCollection::Item item2) {
+ TQPair<TQDate,TQDate> *i1 = static_cast<TQPair<TQDate,TQDate> *> (item1);
+ TQPair<TQDate,TQDate> *i2 = static_cast<TQPair<TQDate,TQDate> *> (item2);
+ if ( *i1 < *i2 ) return -1;
+ if ( *i2 < *i1 ) return 1;
+ return 0;
+ }
+};
+
+class DateSet {
+ public:
+ DateSet();
+ ~DateSet();
+
+ void add( TQDate const& date );
+ void add( TQDate const& from, TQDate const& to );
+
+ void remove( TQDate const& date );
+ void remove( TQDate const& from, TQDate const& to );
+
+ bool contains( TQDate const& date );
+ // returns true if and only if the whole range is in the set
+ bool contains( TQDate const& from, TQDate const& to );
+
+ int find( TQDate const &date );
+ void print();
+
+ protected:
+ private:
+ bool tryMerge( int i );
+ RangeList *mDates;
+
+ TQDate mOldestDate;
+ TQDate mNewestDate;
+};
+
+#endif