/**************************************************************************** ** $Id$ ** ** Definition of Qt template library classes ** ** Created : 990128 ** ** Copyright (C) 1992-2000 Trolltech AS. All rights reserved. ** ** This file is part of the tools module of the Qt GUI Toolkit. ** ** This file may be distributed under the terms of the Q Public License ** as defined by Trolltech AS of Norway and appearing in the file ** LICENSE.QPL included in the packaging of this file. ** ** This file may be distributed and/or modified under the terms of the ** GNU General Public License version 2 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. ** ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition ** licenses may use this file in accordance with the Qt Commercial License ** Agreement provided with the Software. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for ** information about Qt Commercial License Agreements. ** See http://www.trolltech.com/qpl/ for QPL licensing information. ** See http://www.trolltech.com/gpl/ for GPL licensing information. ** ** Contact info@trolltech.com if any conditions of this licensing are ** not clear to you. ** **********************************************************************/ #ifndef QTL_H #define QTL_H #ifndef QT_H #include "qglobal.h" #include "qtextstream.h" #include "qstring.h" #endif // QT_H #ifndef QT_NO_TEXTSTREAM template <class T> class QTextOStreamIterator { protected: QTextOStream& stream; QString separator; public: QTextOStreamIterator( QTextOStream& s) : stream( s ) {} QTextOStreamIterator( QTextOStream& s, const QString& sep ) : stream( s ), separator( sep ) {} QTextOStreamIterator<T>& operator= ( const T& x ) { stream << x; if ( !separator.isEmpty() ) stream << separator; return *this; } QTextOStreamIterator<T>& operator*() { return *this; } QTextOStreamIterator<T>& operator++() { return *this; } QTextOStreamIterator<T>& operator++(int) { return *this; } }; #endif //QT_NO_TEXTSTREAM template <class InputIterator, class OutputIterator> inline OutputIterator qCopy( InputIterator _begin, InputIterator _end, OutputIterator _dest ) { while( _begin != _end ) *_dest++ = *_begin++; return _dest; } template <class BiIterator, class BiOutputIterator> inline BiOutputIterator qCopyBackward( BiIterator _begin, BiIterator _end, BiOutputIterator _dest ) { while ( _begin != _end ) *--_dest = *--_end; return _dest; } template <class InputIterator1, class InputIterator2> inline bool qEqual( InputIterator1 first1, InputIterator1 last1, InputIterator2 first2 ) { // ### compare using !(*first1 == *first2) in Qt 4.0 for ( ; first1 != last1; ++first1, ++first2 ) if ( *first1 != *first2 ) return FALSE; return TRUE; } template <class ForwardIterator, class T> inline void qFill( ForwardIterator first, ForwardIterator last, const T& val ) { for ( ; first != last; ++first ) *first = val; } #if 0 template <class BiIterator, class OutputIterator> inline OutputIterator qReverseCopy( BiIterator _begin, BiIterator _end, OutputIterator _dest ) { while ( _begin != _end ) { --_end; *_dest = *_end; ++_dest; } return _dest; } #endif template <class InputIterator, class T> inline InputIterator qFind( InputIterator first, InputIterator last, const T& val ) { while ( first != last && *first != val ) ++first; return first; } template <class InputIterator, class T, class Size> inline void qCount( InputIterator first, InputIterator last, const T& value, Size& n ) { for ( ; first != last; ++first ) if ( *first == value ) ++n; } template <class T> inline void qSwap( T& _value1, T& _value2 ) { T tmp = _value1; _value1 = _value2; _value2 = tmp; } template <class InputIterator> Q_INLINE_TEMPLATES void qBubbleSort( InputIterator b, InputIterator e ) { // Goto last element; InputIterator last = e; --last; // only one element or no elements ? if ( last == b ) return; // So we have at least two elements in here while( b != last ) { bool swapped = FALSE; InputIterator swap_pos = b; InputIterator x = e; InputIterator y = x; y--; do { --x; --y; if ( *x < *y ) { swapped = TRUE; qSwap( *x, *y ); swap_pos = y; } } while( y != b ); if ( !swapped ) return; b = swap_pos; b++; } } template <class Container> inline void qBubbleSort( Container &c ) { qBubbleSort( c.begin(), c.end() ); } template <class Value> Q_INLINE_TEMPLATES void qHeapSortPushDown( Value* heap, int first, int last ) { int r = first; while ( r <= last / 2 ) { if ( last == 2 * r ) { // node r has only one child if ( heap[2 * r] < heap[r] ) qSwap( heap[r], heap[2 * r] ); r = last; } else { // node r has two children if ( heap[2 * r] < heap[r] && !(heap[2 * r + 1] < heap[2 * r]) ) { // swap with left child qSwap( heap[r], heap[2 * r] ); r *= 2; } else if ( heap[2 * r + 1] < heap[r] && heap[2 * r + 1] < heap[2 * r] ) { // swap with right child qSwap( heap[r], heap[2 * r + 1] ); r = 2 * r + 1; } else { r = last; } } } } template <class InputIterator, class Value> Q_INLINE_TEMPLATES void qHeapSortHelper( InputIterator b, InputIterator e, Value, uint n ) { // Create the heap InputIterator insert = b; Value* realheap = new Value[n]; // Wow, what a fake. But I want the heap to be indexed as 1...n Value* heap = realheap - 1; int size = 0; for( ; insert != e; ++insert ) { heap[++size] = *insert; int i = size; while( i > 1 && heap[i] < heap[i / 2] ) { qSwap( heap[i], heap[i / 2] ); i /= 2; } } // Now do the sorting for( uint i = n; i > 0; i-- ) { *b++ = heap[1]; if ( i > 1 ) { heap[1] = heap[i]; qHeapSortPushDown( heap, 1, (int)i - 1 ); } } delete[] realheap; } template <class InputIterator> Q_INLINE_TEMPLATES void qHeapSort( InputIterator b, InputIterator e ) { // Empty ? if ( b == e ) return; // How many entries have to be sorted ? InputIterator it = b; uint n = 0; while ( it != e ) { ++n; ++it; } // The second last parameter is a hack to retrieve the value type // Do the real sorting here qHeapSortHelper( b, e, *b, n ); } template <class Container> Q_INLINE_TEMPLATES void qHeapSort( Container &c ) { if ( c.begin() == c.end() ) return; // The second last parameter is a hack to retrieve the value type // Do the real sorting here qHeapSortHelper( c.begin(), c.end(), *(c.begin()), (uint)c.count() ); } template <class Container> class QBackInsertIterator { public: Q_EXPLICIT QBackInsertIterator( Container &c ) : container( &c ) { } QBackInsertIterator<Container>& operator=( const Q_TYPENAME Container::value_type &value ) { container->push_back( value ); return *this; } QBackInsertIterator<Container>& operator*() { return *this; } QBackInsertIterator<Container>& operator++() { return *this; } QBackInsertIterator<Container>& operator++(int) { return *this; } protected: Container *container; }; template <class Container> inline QBackInsertIterator<Container> qBackInserter( Container &c ) { return QBackInsertIterator<Container>( c ); } #endif