Release-1.2.2-20001015

1 files changed, 638 insertions, 0 deletions

diff --git a/qtools/qgvector.cpp b/qtools/qgvector.cpp
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+/****************************************************************************
+** 
+**
+** Implementation of QGVector class
+**
+** Created : 930907
+**
+** 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.
+**
+**********************************************************************/
+
+#define	 QGVECTOR_CPP
+#include "qgvector.h"
+#include "qglist.h"
+#include "qstring.h"
+#include "qdatastream.h"
+#include <stdlib.h>
+
+#define USE_MALLOC				// comment to use new/delete
+
+#undef NEW
+#undef DELETE
+
+#if defined(USE_MALLOC)
+#define NEW(type,size)	((type*)malloc(size*sizeof(type)))
+#define DELETE(array)	(free((char*)array))
+#else
+#define NEW(type,size)	(new type[size])
+#define DELETE(array)	(delete[] array)
+#define DONT_USE_REALLOC			// comment to use realloc()
+#endif
+
+// NOT REVISED
+
+/*!
+  \class QGVector qgvector.h
+
+  \brief The QGVector class is an internal class for implementing Qt
+  collection classes.
+
+  QGVector is a strictly internal class that acts as a base class for
+  the QVector collection class.
+
+  QGVector has some virtual functions that may be reimplemented in
+  subclasses to to customize behavior.
+
+  <ul>
+  <li> compareItems() compares two collection/vector items.
+  <li> read() reads a collection/vector item from a QDataStream.
+  <li> write() writes a collection/vector item to a QDataStream.
+  </ul>
+*/
+
+/*****************************************************************************
+  Default implementation of virtual functions
+ *****************************************************************************/
+
+/*!
+  This virtual function compares two list items.
+
+  Returns:
+  <ul>
+  <li> 0 if \a item1 == \a item2
+  <li> non-zero if \a item1 != \a item2
+  </ul>
+
+  This function returns \e int rather than \e bool so that
+  reimplementations can return one of three values and use it to sort
+  by:
+
+  <ul>
+  <li> 0 if \e item1 == \e item2
+  <li> \> 0 (positive integer) if \a item1 \> \a item2
+  <li> \< 0 (negative integer) if \a item1 \< \a item2
+  </ul>
+
+  The QVector::sort() and QVector::bsearch() functions require that
+  compareItems() is implemented as described here.
+
+  This function should not modify the vector because some const
+  functions call compareItems().
+*/
+
+int QGVector::compareItems( Item d1, Item d2 )
+{
+    return d1 != d2;				// compare pointers
+}
+
+#ifndef QT_NO_DATASTREAM
+/*!
+  Reads a collection/vector item from the stream \a s and returns a reference
+  to the stream.
+
+  The default implementation sets \e item to 0.
+
+  \sa write()
+*/
+
+QDataStream &QGVector::read( QDataStream &s, Item &d )
+{						// read item from stream
+    d = 0;
+    return s;
+}
+
+/*!
+  Writes a collection/vector item to the stream \a s and returns a reference
+  to the stream.
+
+  The default implementation does nothing.
+
+  \sa read()
+*/
+
+QDataStream &QGVector::write( QDataStream &s, Item ) const
+{						// write item to stream
+    return s;
+}
+#endif // QT_NO_DATASTREAM
+
+/*****************************************************************************
+  QGVector member functions
+ *****************************************************************************/
+
+/*!
+  \internal
+*/
+
+QGVector::QGVector()				// create empty vector
+{
+    vec = 0;
+    len = numItems = 0;
+}
+
+/*!
+  \internal
+*/
+QGVector::QGVector( uint size )			// create vectors with nullptrs
+{
+    len = size;
+    numItems = 0;
+    if ( len == 0 ) {				// zero length
+	vec = 0;
+	return;
+    }
+    vec = NEW(Item,len);
+    CHECK_PTR( vec );
+    memset( (void*)vec, 0, len*sizeof(Item) );	// fill with nulls
+}
+
+/*!
+  \internal
+*/
+
+QGVector::QGVector( const QGVector &a )		// make copy of other vector
+    : QCollection( a )
+{
+    len = a.len;
+    numItems = a.numItems;
+    vec = NEW(Item,len);
+    CHECK_PTR( vec );
+    for ( uint i=0; i<len; i++ ) {
+	vec[i] = a.vec[i] ? newItem( a.vec[i] ) : 0;
+	CHECK_PTR( vec[i] );
+    }
+}
+
+/*!
+  \internal
+*/
+
+QGVector::~QGVector()
+{
+    clear();
+}
+
+
+/*!
+  \internal
+*/
+
+QGVector& QGVector::operator=( const QGVector &v )
+{						// assign from other vector
+    clear();					// first delete old vector
+    len = v.len;
+    numItems = v.numItems;
+    vec = NEW(Item,len);				// create new vector
+    CHECK_PTR( vec );
+    for ( uint i=0; i<len; i++ ) {		// copy elements
+	vec[i] = v.vec[i] ? newItem( v.vec[i] ) : 0;
+	CHECK_PTR( vec[i] );
+    }
+    return *this;
+}
+
+
+/*!
+  \fn Item *QGVector::data() const
+  \internal
+*/
+
+/*!
+  \fn uint QGVector::size() const
+  \internal
+*/
+
+/*!
+  \fn uint QGVector::count() const
+  \internal
+*/
+
+/*!
+  \fn Item QGVector::at( uint index ) const
+  \internal
+*/
+
+/*!
+  \internal
+*/
+
+bool QGVector::insert( uint index, Item d )	// insert item at index
+{
+#if defined(CHECK_RANGE)
+    if ( index >= len ) {			// range error
+	qWarning( "QGVector::insert: Index %d out of range", index );
+	return FALSE;
+    }
+#endif
+    if ( vec[index] ) {				// remove old item
+	deleteItem( vec[index] );
+	numItems--;
+    }
+    if ( d ) {
+	vec[index] = newItem( d );
+	CHECK_PTR( vec[index] );
+	numItems++;
+	return vec[index] != 0;
+    } else {
+	vec[index] = 0;				// reset item
+    }
+    return TRUE;
+}
+
+/*!
+  \internal
+*/
+
+bool QGVector::remove( uint index )		// remove item at index
+{
+#if defined(CHECK_RANGE)
+    if ( index >= len ) {			// range error
+	qWarning( "QGVector::remove: Index %d out of range", index );
+	return FALSE;
+    }
+#endif
+    if ( vec[index] ) {				// valid item
+	deleteItem( vec[index] );		// delete it
+	vec[index] = 0;				// reset pointer
+	numItems--;
+    }
+    return TRUE;
+}
+
+/*!
+  \internal
+*/
+
+QCollection::Item QGVector::take( uint index )		// take out item
+{
+#if defined(CHECK_RANGE)
+    if ( index >= len ) {			// range error
+	qWarning( "QGVector::take: Index %d out of range", index );
+	return 0;
+    }
+#endif
+    Item d = vec[index];				// don't delete item
+    if ( d )
+	numItems--;
+    vec[index] = 0;
+    return d;
+}
+
+
+/*!
+  \internal
+*/
+
+void QGVector::clear()				// clear vector
+{
+    if ( vec ) {
+	for ( uint i=0; i<len; i++ ) {		// delete each item
+	    if ( vec[i] )
+		deleteItem( vec[i] );
+	}
+	DELETE(vec);
+	vec = 0;
+	len = numItems = 0;
+    }
+}
+
+/*!
+  \internal
+*/
+
+bool QGVector::resize( uint newsize )		// resize array
+{
+    if ( newsize == len )			// nothing to do
+	return TRUE;
+    if ( vec ) {				// existing data
+	if ( newsize < len ) {			// shrink vector
+	    uint i = newsize;
+	    while ( i < len ) {			// delete lost items
+		if ( vec[i] ) {
+		    deleteItem( vec[i] );
+		    numItems--;
+		}
+		i++;
+	    }
+	}
+	if ( newsize == 0 ) {			// vector becomes empty
+	    DELETE(vec);
+	    vec = 0;
+	    len = numItems = 0;
+	    return TRUE;
+	}
+#if defined(DONT_USE_REALLOC)
+	Item *newvec = NEW(Item,newsize);		// manual realloc
+	memcpy( newvec, vec, (len < newsize ? len : newsize)*sizeof(Item) );
+	DELETE(vec);
+	vec = newvec;
+#else
+	vec = (Item*)realloc( (char *)vec, newsize*sizeof(Item) );
+#endif
+    } else {					// create new vector
+	vec = NEW(Item,newsize);
+	len = numItems = 0;
+    }
+    CHECK_PTR( vec );
+    if ( !vec )					// no memory
+	return FALSE;
+    if ( newsize > len )			// init extra space added
+	memset( (void*)&vec[len], 0, (newsize-len)*sizeof(Item) );
+    len = newsize;
+    return TRUE;
+}
+
+
+/*!
+  \internal
+*/
+
+bool QGVector::fill( Item d, int flen )		// resize and fill vector
+{
+    if ( flen < 0 )
+	flen = len;				// default: use vector length
+    else if ( !resize( flen ) )
+	return FALSE;
+    for ( uint i=0; i<(uint)flen; i++ )		// insert d at every index
+	insert( i, d );
+    return TRUE;
+}
+
+
+static QGVector *sort_vec=0;			// current sort vector
+
+
+#if defined(Q_C_CALLBACKS)
+extern "C" {
+#endif
+
+static int cmp_vec( const void *n1, const void *n2 )
+{
+    return sort_vec->compareItems( *((QCollection::Item*)n1), *((QCollection::Item*)n2) );
+}
+
+#if defined(Q_C_CALLBACKS)
+}
+#endif
+
+
+/*!
+  \internal
+*/
+
+void QGVector::sort()				// sort vector
+{
+    if ( count() == 0 )				// no elements
+	return;
+    register Item *start = &vec[0];
+    register Item *end	= &vec[len-1];
+    Item tmp;
+    while ( TRUE ) {				// put all zero elements behind
+	while ( start < end && *start != 0 )
+	    start++;
+	while ( end > start && *end == 0 )
+	    end--;
+	if ( start < end ) {
+	    tmp = *start;
+	    *start = *end;
+	    *end = tmp;
+	} else {
+	    break;
+	}
+    }
+    sort_vec = (QGVector*)this;
+    qsort( vec, count(), sizeof(Item), cmp_vec );
+    sort_vec = 0;
+}
+
+/*!
+  \internal
+*/
+
+int QGVector::bsearch( Item d ) const		// binary search; when sorted
+{
+    if ( !len )
+	return -1;
+    if ( !d ) {
+#if defined(CHECK_NULL)
+	qWarning( "QGVector::bsearch: Cannot search for null object" );
+#endif
+	return -1;
+    }
+    int n1 = 0;
+    int n2 = len - 1;
+    int mid = 0;
+    bool found = FALSE;
+    while ( n1 <= n2 ) {
+	int  res;
+	mid = (n1 + n2)/2;
+	if ( vec[mid] == 0 )			// null item greater
+	    res = -1;
+	else
+	    res = ((QGVector*)this)->compareItems( d, vec[mid] );
+	if ( res < 0 )
+	    n2 = mid - 1;
+	else if ( res > 0 )
+	    n1 = mid + 1;
+	else {					// found it
+	    found = TRUE;
+	    break;
+	}
+    }
+    if ( !found )
+	return -1;
+    // search to first of equal items
+    while ( (mid - 1 >= 0) && !((QGVector*)this)->compareItems(d, vec[mid-1]) )
+	mid--;
+    return mid;
+}
+
+
+/*!
+  \internal
+*/
+
+int QGVector::findRef( Item d, uint index) const // find exact item in vector
+{
+#if defined(CHECK_RANGE)
+    if ( index >= len ) {			// range error
+	qWarning( "QGVector::findRef: Index %d out of range", index );
+	return -1;
+    }
+#endif
+    for ( uint i=index; i<len; i++ ) {
+	if ( vec[i] == d )
+	    return i;
+    }
+    return -1;
+}
+
+/*!
+  \internal
+*/
+
+int QGVector::find( Item d, uint index ) const	// find equal item in vector
+{
+#if defined(CHECK_RANGE)
+    if ( index >= len ) {			// range error
+	qWarning( "QGVector::find: Index %d out of range", index );
+	return -1;
+    }
+#endif
+    for ( uint i=index; i<len; i++ ) {
+	if ( vec[i] == 0 && d == 0 )		// found null item
+	    return i;
+	if ( vec[i] && ((QGVector*)this)->compareItems( vec[i], d ) == 0 )
+	    return i;
+    }
+    return -1;
+}
+
+/*!
+  \internal
+*/
+
+uint QGVector::containsRef( Item d ) const	// get number of exact matches
+{
+    uint count = 0;
+    for ( uint i=0; i<len; i++ ) {
+	if ( vec[i] == d )
+	    count++;
+    }
+    return count;
+}
+
+/*!
+  \internal
+*/
+
+uint QGVector::contains( Item d ) const		// get number of equal matches
+{
+    uint count = 0;
+    for ( uint i=0; i<len; i++ ) {
+	if ( vec[i] == 0 && d == 0 )		// count null items
+	    count++;
+	if ( vec[i] && ((QGVector*)this)->compareItems( vec[i], d ) == 0 )
+	    count++;
+    }
+    return count;
+}
+
+
+/*!
+  \internal
+*/
+
+bool QGVector::insertExpand( uint index, Item d )// insert and grow if necessary
+{
+    if ( index >= len ) {
+	if ( !resize( index+1 ) )		// no memory
+	    return FALSE;
+    }
+    insert( index, d );
+    return TRUE;
+}
+
+
+/*!
+  \internal
+*/
+
+void QGVector::toList( QGList *list ) const	// store items in list
+{
+    list->clear();
+    for ( uint i=0; i<len; i++ ) {
+	if ( vec[i] )
+	    list->append( vec[i] );
+    }
+}
+
+
+void QGVector::warningIndexRange( uint i )
+{
+#if defined(CHECK_RANGE)
+    qWarning( "QGVector::operator[]: Index %d out of range", i );
+#else
+    Q_UNUSED( i )
+#endif
+}
+
+
+/*****************************************************************************
+  QGVector stream functions
+ *****************************************************************************/
+#ifndef QT_NO_DATASTREAM
+QDataStream &operator>>( QDataStream &s, QGVector &vec )
+{						// read vector
+    return vec.read( s );
+}
+
+QDataStream &operator<<( QDataStream &s, const QGVector &vec )
+{						// write vector
+    return vec.write( s );
+}
+
+/*!
+  \internal
+*/
+
+QDataStream &QGVector::read( QDataStream &s )	// read vector from stream
+{
+    uint num;
+    s >> num;					// read number of items
+    clear();					// clear vector
+    resize( num );
+    for (uint i=0; i<num; i++) {		// read all items
+	Item d;
+	read( s, d );
+	CHECK_PTR( d );
+	if ( !d )				// no memory
+	    break;
+	vec[i] = d;
+    }
+    return s;
+}
+
+/*!
+  \internal
+*/
+
+QDataStream &QGVector::write( QDataStream &s ) const
+{						// write vector to stream
+    uint num = count();
+    s << num;					// number of items to write
+    num = size();
+    for (uint i=0; i<num; i++) {		// write non-null items
+	if ( vec[i] )
+	    write( s, vec[i] );
+    }
+    return s;
+}
+#endif // QT_NO_DATASTREAM