summaryrefslogtreecommitdiffstats
path: root/tqtinterface/qt4/src/tools/tqgvector.cpp
blob: e30c1723ab7579b3dfd10f2063b904d11dfbc36f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
/****************************************************************************
**
** Implementation of TQGVector class
**
** Created : 930907
**
** Copyright (C) 2010 Timothy Pearson and (C) 1992-2008 Trolltech ASA.
**
** This file is part of the tools module of the TQt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
** included in the packaging of this file.  Licensees holding valid TQt
** Commercial licenses may use this file in accordance with the TQt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/

#include "tqglobal.h"
#if defined(TQ_CC_BOR)
// needed for qsort() because of a std namespace problem on Borland
#include "tqplatformdefs.h"
#endif

#define	 TQGVECTOR_CPP
#include "tqgvector.h"
#include "tqglist.h"
#include "tqstring.h"
#include "tqdatastream.h"
#include <stdlib.h>

#ifdef TQT_THREAD_SUPPORT
#  include <private/tqmutexpool_p.h>
#endif // TQT_THREAD_SUPPORT

#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

/*!
  \class TQGVector
  \reentrant
  \ingroup collection

  \brief The TQGVector class is an internal class for implementing TQt
  collection classes.

  \internal

  TQGVector is an internal class that acts as a base class for the
  TQPtrVector collection class.

  TQGVector has some virtual functions that may be reimplemented in
  subclasses to customize behavior.

  \list
  \i compareItems() compares two collection/vector items.
  \i read() reads a collection/vector item from a TQDataStream.
  \i write() writes a collection/vector item to a TQDataStream.
  \endlist
*/

/*****************************************************************************
  Default implementation of virtual functions
 *****************************************************************************/

/*!
  This virtual function compares two list items.

  Returns:
  <ul>
  <li> 0 if \a d1 == \a d2
  <li> non-zero if \a d1 != \a d2
  </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 \a d1 == \a d2
  <li> \> 0 (positive integer) if \a d1 \> \a d2
  <li> \< 0 (negative integer) if \a d1 \< \a d2
  </ul>

  The TQPtrVector::sort() and TQPtrVector::bsearch() functions require that
  compareItems() is implemented as described here.

  This function should not modify the vector because some const
  functions call compareItems().
*/

int TQGVector::compareItems( Item d1, Item d2 )
{
    return d1 != d2;				// compare pointers
}

#ifndef TQT_NO_DATASTREAM
/*!
  Reads a collection/vector item from the stream \a s and returns a reference
  to the stream.

  The default implementation sets \a d to 0.

  \sa write()
*/

TQDataStream &TQGVector::read( TQDataStream &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()
*/

TQDataStream &TQGVector::write( TQDataStream &s, Item ) const
{						// write item to stream
    return s;
}
#endif // TQT_NO_DATASTREAM

/*****************************************************************************
  TQGVector member functions
 *****************************************************************************/

TQGVector::TQGVector()				// create empty vector
{
    vec = 0;
    len = numItems = 0;
}

TQGVector::TQGVector( uint size )			// create vectors with nullptrs
{
    len = size;
    numItems = 0;
    if ( len == 0 ) {				// zero length
	vec = 0;
	return;
    }
    vec = NEW(Item,len);
    TQ_CHECK_PTR( vec );
    memset( (void*)vec, 0, len*sizeof(Item) );	// fill with nulls
}

TQGVector::TQGVector( const TQGVector &a )		// make copy of other vector
    : TQPtrCollection( a )
{
    len = a.len;
    numItems = a.numItems;
    if ( len == 0 ) {
	vec = 0;
	return;
    }
    vec = NEW( Item, len );
    TQ_CHECK_PTR( vec );
    for ( uint i = 0; i < len; i++ ) {
	if ( a.vec[i] ) {
	    vec[i] = newItem( a.vec[i] );
	    TQ_CHECK_PTR( vec[i] );
	} else {
	    vec[i] = 0;
	}
    }
}

TQGVector::~TQGVector()
{
    clear();
}

TQGVector& TQGVector::operator=( const TQGVector &v )
{
    if ( &v == this )
	return *this;

    clear();
    len = v.len;
    numItems = v.numItems;
    if ( len == 0 ) {
	vec = 0;
	return *this;
    }
    vec = NEW( Item, len );
    TQ_CHECK_PTR( vec );
    for ( uint i = 0; i < len; i++ ) {
	if ( v.vec[i] ) {
	    vec[i] = newItem( v.vec[i] );
	    TQ_CHECK_PTR( vec[i] );
	} else {
	    vec[i] = 0;
	}
    }
    return *this;
}


bool TQGVector::insert( uint index, Item d )	// insert item at index
{
#if defined(TQT_CHECK_RANGE)
    if ( index >= len ) {			// range error
	qWarning( "TQGVector::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 );
	TQ_CHECK_PTR( vec[index] );
	numItems++;
	return vec[index] != 0;
    } else {
	vec[index] = 0;				// reset item
    }
    return TRUE;
}

bool TQGVector::remove( uint index )		// remove item at index
{
#if defined(TQT_CHECK_RANGE)
    if ( index >= len ) {			// range error
	qWarning( "TQGVector::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;
}

TQPtrCollection::Item TQGVector::take( uint index )		// take out item
{
#if defined(TQT_CHECK_RANGE)
    if ( index >= len ) {			// range error
	qWarning( "TQGVector::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;
}

void TQGVector::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;
    }
}

bool TQGVector::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)
	if ( newsize == 0 ) {
	    DELETE(vec);
	    vec = 0;
	    return FALSE;
	}
	Item *newvec = NEW(Item,newsize);		// manual realloc
        if (!newvec)
            return FALSE;
	memcpy( newvec, vec, (len < newsize ? len : newsize)*sizeof(Item) );
	DELETE(vec);
	vec = newvec;
#else
	Item *newvec = (Item*)realloc( (char *)vec, newsize*sizeof(Item) );
        if (!newvec)
            return FALSE;
        vec = newvec;
#endif
    } else {					// create new vector
	vec = NEW(Item,newsize);
        if (!vec)
            return FALSE;
	len = numItems = 0;
    }
    if ( newsize > len )			// init extra space added
	memset( (void*)&vec[len], 0, (newsize-len)*sizeof(Item) );
    len = newsize;
    return TRUE;
}


bool TQGVector::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 TQGVector *sort_vec=0;			// current sort vector


#if defined(TQ_C_CALLBACKS)
extern "C" {
#endif

#ifdef TQ_OS_TEMP
static int _cdecl cmp_vec( const void *n1, const void *n2 )
#else
static int cmp_vec( const void *n1, const void *n2 )
#endif
{
    return sort_vec->compareItems( *((TQPtrCollection::Item*)n1), *((TQPtrCollection::Item*)n2) );
}

#if defined(TQ_C_CALLBACKS)
}
#endif


void TQGVector::sort()				// sort vector
{
    if ( count() == 0 )				// no elements
	return;
    register Item *start = &vec[0];
    register Item *end	= &vec[len-1];
    Item tmp;
    for (;;) {				// 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;
	}
    }

#ifdef TQT_THREAD_SUPPORT
    TQMutexLocker locker( tqt_global_mutexpool ?
			 tqt_global_mutexpool->get( &sort_vec ) : 0 );
#endif // TQT_THREAD_SUPPORT

    sort_vec = (TQGVector*)this;
    qsort( vec, count(), sizeof(Item), cmp_vec );
    sort_vec = 0;
}

int TQGVector::bsearch( Item d ) const		// binary search; when sorted
{
    if ( !len )
	return -1;
    if ( !d ) {
#if defined(TQT_CHECK_NULL)
	qWarning( "TQGVector::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 = ((TQGVector*)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) && !((TQGVector*)this)->compareItems(d, vec[mid-1]) )
	mid--;
    return mid;
}

int TQGVector::tqfindRef( Item d, uint index) const // tqfind exact item in vector
{
#if defined(TQT_CHECK_RANGE)
    if ( index > len ) {			// range error
	qWarning( "TQGVector::tqfindRef: Index %d out of range", index );
	return -1;
    }
#endif
    for ( uint i=index; i<len; i++ ) {
	if ( vec[i] == d )
	    return i;
    }
    return -1;
}

int TQGVector::tqfind( Item d, uint index ) const	// tqfind equal item in vector
{
#if defined(TQT_CHECK_RANGE)
    if ( index >= len ) {			// range error
	qWarning( "TQGVector::tqfind: 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] && ((TQGVector*)this)->compareItems( vec[i], d ) == 0 )
	    return i;
    }
    return -1;
}

uint TQGVector::tqcontainsRef( 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;
}

uint TQGVector::tqcontains( 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] && ((TQGVector*)this)->compareItems( vec[i], d ) == 0 )
	    count++;
    }
    return count;
}

bool TQGVector::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;
}

void TQGVector::toList( TQGList *list ) const	// store items in list
{
    list->clear();
    for ( uint i=0; i<len; i++ ) {
	if ( vec[i] )
	    list->append( vec[i] );
    }
}


void TQGVector::warningIndexRange( uint i )
{
#if defined(TQT_CHECK_RANGE)
    qWarning( "TQGVector::operator[]: Index %d out of range", i );
#else
    TQ_UNUSED( i )
#endif
}


/*****************************************************************************
  TQGVector stream functions
 *****************************************************************************/
#ifndef TQT_NO_DATASTREAM
TQDataStream &operator>>( TQDataStream &s, TQGVector &vec )
{						// read vector
    return vec.read( s );
}

TQDataStream &operator<<( TQDataStream &s, const TQGVector &vec )
{						// write vector
    return vec.write( s );
}

TQDataStream &TQGVector::read( TQDataStream &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 );
	TQ_CHECK_PTR( d );
	if ( !d )				// no memory
	    break;
	vec[i] = d;
    }
    return s;
}

TQDataStream &TQGVector::write( TQDataStream &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;
}

/* Returns whether v equals this vector or not */

bool TQGVector::operator==( const TQGVector &v ) const
{
    if ( size() != v.size() )
	return FALSE;
    if ( count() != v.count() )
	return FALSE;
    for ( int i = 0; i < (int)size(); ++i ) {
	if ( ( (TQGVector*)this )->compareItems( at( i ), v.at( i ) ) != 0 )
	    return FALSE;
    }
    return TRUE;
}

#endif // TQT_NO_DATASTREAM