summaryrefslogtreecommitdiff
path: root/svtools/source/misc/templatefoldercache.cxx
blob: 41f0af0839cd2331763e26a9b727da7fdbca61b5 (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
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org 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 Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

#include <svtools/templatefoldercache.hxx>
#include <unotools/ucbstreamhelper.hxx>
#include <unotools/localfilehelper.hxx>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/sdbc/XResultSet.hpp>
#include <com/sun/star/ucb/XDynamicResultSet.hpp>
#include <com/sun/star/sdbc/XRow.hpp>
#include <com/sun/star/ucb/XContentAccess.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <com/sun/star/util/XOfficeInstallationDirectories.hpp>
#include <ucbhelper/content.hxx>
#include <rtl/ref.hxx>
#include <salhelper/simplereferenceobject.hxx>
#include <tools/urlobj.hxx>
#include <tools/debug.hxx>
#include <unotools/pathoptions.hxx>

#include "comphelper/processfactory.hxx"

#include <vector>
#include <list>
#include <functional>
#include <algorithm>

//.........................................................................
namespace svt
{
//.........................................................................

    using namespace ::utl;
    using namespace ::com::sun::star;
    using namespace ::com::sun::star::sdbc;
    using namespace ::com::sun::star::ucb;
    using namespace ::com::sun::star::uno;

    //=====================================================================
    //= helpers
    //=====================================================================
    //---------------------------------------------------------------------
    SvStream& operator << ( SvStream& _rStorage, const util::DateTime& _rDate )
    {
        _rStorage << _rDate.HundredthSeconds;
        _rStorage << _rDate.Seconds;
        _rStorage << _rDate.Minutes;
        _rStorage << _rDate.Hours;
        _rStorage << _rDate.Day;
        _rStorage << _rDate.Month;
        _rStorage << _rDate.Year;

        return _rStorage;
    }

    //---------------------------------------------------------------------
    SvStream& operator >> ( SvStream& _rStorage, util::DateTime& _rDate )
    {
        _rStorage >> _rDate.HundredthSeconds;
        _rStorage >> _rDate.Seconds;
        _rStorage >> _rDate.Minutes;
        _rStorage >> _rDate.Hours;
        _rStorage >> _rDate.Day;
        _rStorage >> _rDate.Month;
        _rStorage >> _rDate.Year;

        return _rStorage;
    }

    //---------------------------------------------------------------------
    sal_Bool operator == ( const util::DateTime& _rLHS, const util::DateTime& _rRHS )
    {
        return  _rLHS.HundredthSeconds == _rRHS.HundredthSeconds
            &&  _rLHS.Seconds   == _rRHS.Seconds
            &&  _rLHS.Minutes   == _rRHS.Minutes
            &&  _rLHS.Hours     == _rRHS.Hours
            &&  _rLHS.Day       == _rRHS.Day
            &&  _rLHS.Month     == _rRHS.Month
            &&  _rLHS.Year      == _rRHS.Year;
    }

    //---------------------------------------------------------------------
    sal_Bool operator != ( const util::DateTime& _rLHS, const util::DateTime& _rRHS )
    {
        return !( _rLHS == _rRHS );
    }

    //=====================================================================
    //= TemplateContent
    //=====================================================================
    struct TemplateContent;
    typedef ::std::vector< ::rtl::Reference< TemplateContent > >    TemplateFolderContent;
    typedef TemplateFolderContent::const_iterator           ConstFolderIterator;
    typedef TemplateFolderContent::iterator                 FolderIterator;

    /** a struct describing one content in one of the template dirs (or at least it's relevant aspects)
    */
    struct TemplateContent : public ::salhelper::SimpleReferenceObject
    {
    public:

    private:
        INetURLObject           m_aURL;
        String                  m_sLocalName;       // redundant - last segment of m_aURL
        util::DateTime          m_aLastModified;    // date of last modification as reported by UCP
        TemplateFolderContent   m_aSubContents;     // sorted (by name) list of the children

    private:
        inline  void    implResetDate( )
        {
            m_aLastModified.HundredthSeconds = m_aLastModified.Seconds = m_aLastModified.Minutes = m_aLastModified.Hours = 0;
            m_aLastModified.Day = m_aLastModified.Month = m_aLastModified.Year = 0;
        }

    private:
        ~TemplateContent();

    public:
        TemplateContent( const INetURLObject& _rURL );

        // attribute access
        inline String                   getName( ) const                            { return m_sLocalName; }
        inline String                   getURL( ) const                             { return m_aURL.GetMainURL( INetURLObject::DECODE_TO_IURI ); }
        inline void                     setModDate( const util::DateTime& _rDate )  { m_aLastModified = _rDate; }
        inline const util::DateTime&    getModDate( ) const                         { return m_aLastModified; }

        inline TemplateFolderContent&   getSubContents()            { return m_aSubContents; }
        inline const TemplateFolderContent& getSubContents() const  { return m_aSubContents; }

                inline ConstFolderIterator              begin() const   { return m_aSubContents.begin(); }
                inline ConstFolderIterator              end() const             { return m_aSubContents.end(); }
        inline TemplateFolderContent::size_type
                                        size() const    { return m_aSubContents.size(); }

        inline void                     push_back( const ::rtl::Reference< TemplateContent >& _rxNewElement )
                                                        { m_aSubContents.push_back( _rxNewElement ); }
    };

    //---------------------------------------------------------------------
    DBG_NAME( TemplateContent )

    //---------------------------------------------------------------------
    TemplateContent::TemplateContent( const INetURLObject& _rURL )
        :m_aURL( _rURL )
    {
        DBG_CTOR( TemplateContent, NULL );
        DBG_ASSERT( INET_PROT_NOT_VALID != m_aURL.GetProtocol(), "TemplateContent::TemplateContent: invalid URL!" );
        m_sLocalName = m_aURL.getName();
        implResetDate();
    }

    //---------------------------------------------------------------------
    TemplateContent::~TemplateContent()
    {
        DBG_DTOR( TemplateContent, NULL );
    }

    //=====================================================================
    //= stl helpers
    //=====================================================================
    //---------------------------------------------------------------------
    /// compares two TemplateContent by URL
    struct TemplateContentURLLess
        :public ::std::binary_function  <   ::rtl::Reference< TemplateContent >
                                        ,   ::rtl::Reference< TemplateContent >
                                        ,   bool
                                        >
    {
        bool operator() ( const ::rtl::Reference< TemplateContent >& _rxLHS, const ::rtl::Reference< TemplateContent >& _rxRHS ) const
        {
            return  _rxLHS->getURL() < _rxRHS->getURL()
                ?   true
                :   false;
        }
    };

    //---------------------------------------------------------------------
    /// sorts the sib contents of a TemplateFolderContent
    struct SubContentSort : public ::std::unary_function< ::rtl::Reference< TemplateContent >, void >
    {
        void operator() ( TemplateFolderContent& _rFolder ) const
        {
            // sort the directory by name
            ::std::sort(
                _rFolder.begin(),
                _rFolder.end(),
                TemplateContentURLLess()
            );

            // sort the sub directories by name
            ::std::for_each(
                _rFolder.begin(),
                _rFolder.end(),
                *this
            );
        }

        void operator() ( const ::rtl::Reference< TemplateContent >& _rxContent ) const
        {
            if ( _rxContent.is() && _rxContent->size() )
            {
                operator()( _rxContent->getSubContents() );
            }
        }
    };
    //---------------------------------------------------------------------
    /** does a deep compare of two template contents
    */
    struct TemplateContentEqual
        :public ::std::binary_function  <   ::rtl::Reference< TemplateContent >
                                        ,   ::rtl::Reference< TemplateContent >
                                        ,   bool
                                        >
    {
        //.................................................................
        bool operator() (const ::rtl::Reference< TemplateContent >& _rLHS, const ::rtl::Reference< TemplateContent >& _rRHS )
        {
            if ( !_rLHS.is() || !_rRHS.is() )
            {
                OSL_FAIL( "TemplateContentEqual::operator(): invalid contents!" );
                return true;
                    // this is not strictly true, in case only one is invalid - but this is a heavy error anyway
            }

            if ( _rLHS->getURL() != _rRHS->getURL() )
                return false;

            if ( _rLHS->getModDate() != _rRHS->getModDate() )
                return false;

            if ( _rLHS->getSubContents().size() != _rRHS->getSubContents().size() )
                return false;

            if ( _rLHS->getSubContents().size() )
            {   // there are children
                // -> compare them
                ::std::pair< FolderIterator, FolderIterator > aFirstDifferent = ::std::mismatch(
                    _rLHS->getSubContents().begin(),
                    _rLHS->getSubContents().end(),
                    _rRHS->getSubContents().begin(),
                    *this
                );
                if ( aFirstDifferent.first != _rLHS->getSubContents().end() )
                    return false;// the sub contents differ
            }

            return true;
        }
    };

    //---------------------------------------------------------------------
    /// base class for functors which act an an SvStream
    struct StorageHelper
    {
    protected:
        SvStream&   m_rStorage;
        StorageHelper( SvStream& _rStorage ) : m_rStorage( _rStorage ) { }
    };

    //---------------------------------------------------------------------
    /// functor which allows storing a string
    struct StoreString
            :public ::std::unary_function< String, void >
            ,public StorageHelper
    {
        StoreString( SvStream& _rStorage ) : StorageHelper( _rStorage ) { }

        void operator() ( const String& _rString ) const
        {
            m_rStorage.WriteByteString( _rString );
        }
    };

    //---------------------------------------------------------------------
    /// functor which stores the local name of a TemplateContent
    struct StoreLocalContentName
            :public ::std::unary_function< ::rtl::Reference< TemplateContent >, void >
            ,public StoreString
    {
        StoreLocalContentName( SvStream& _rStorage ) : StoreString( _rStorage ) { }

        void operator() ( const ::rtl::Reference< TemplateContent >& _rxContent ) const
        {
            DBG_ERRORFILE( "This method must not be used, the whole URL must be stored!" );

            // use the base class operator with the local name of the content
            StoreString::operator() ( _rxContent->getName() );
        }
    };

    //---------------------------------------------------------------------
    struct StoreContentURL
            :public ::std::unary_function< ::rtl::Reference< TemplateContent >, void >
            ,public StoreString
    {
        uno::Reference< util::XOfficeInstallationDirectories > m_xOfficeInstDirs;

        StoreContentURL( SvStream& _rStorage,
                         const uno::Reference<
                            util::XOfficeInstallationDirectories > &
                                xOfficeInstDirs )
        : StoreString( _rStorage ), m_xOfficeInstDirs( xOfficeInstDirs ) { }

        void operator() ( const ::rtl::Reference< TemplateContent >& _rxContent ) const
        {
            // use the base class operator with the local name of the content
            String sURL = _rxContent->getURL();
            // #116281# Keep office installtion relocatable. Never store
            // any direct references to office installation directory.
            sURL = m_xOfficeInstDirs->makeRelocatableURL( sURL );
            StoreString::operator() ( sURL );
        }
    };

    //---------------------------------------------------------------------
    /// functor which stores the complete content of a TemplateContent
    struct StoreFolderContent
            :public ::std::unary_function< ::rtl::Reference< TemplateContent >, void >
            ,public StorageHelper
    {
        uno::Reference< util::XOfficeInstallationDirectories > m_xOfficeInstDirs;

    public:
        StoreFolderContent( SvStream& _rStorage,
                         const uno::Reference<
                            util::XOfficeInstallationDirectories > &
                                xOfficeInstDirs )
        : StorageHelper( _rStorage ), m_xOfficeInstDirs( xOfficeInstDirs ) { }

        //.................................................................
        void operator() ( const TemplateContent& _rContent ) const
        {
            // store the info about this content
            m_rStorage << _rContent.getModDate();

            // store the info about the children
            // the number
            m_rStorage << (sal_Int32)_rContent.size();
            // their URLs ( the local name is not enough, since URL might be not a hierarchical one, "expand:" for example )
            ::std::for_each(
                _rContent.getSubContents().begin(),
                _rContent.getSubContents().end(),
                StoreContentURL( m_rStorage, m_xOfficeInstDirs )
            );
            // their content
            ::std::for_each(
                _rContent.getSubContents().begin(),
                _rContent.getSubContents().end(),
                *this
            );
        }

        //.................................................................
        void operator() ( const ::rtl::Reference< TemplateContent >& _rxContent ) const
        {
            if ( _rxContent.is() )
            {
                operator()( *_rxContent );
            }
        }
    };

    //---------------------------------------------------------------------
    /// functor which reads a complete TemplateContent instance
    struct ReadFolderContent
            :public ::std::unary_function< ::rtl::Reference< TemplateContent >, void >
            ,public StorageHelper
    {
        uno::Reference< util::XOfficeInstallationDirectories > m_xOfficeInstDirs;

        ReadFolderContent( SvStream& _rStorage,
                         const uno::Reference<
                            util::XOfficeInstallationDirectories > &
                                xOfficeInstDirs )
        : StorageHelper( _rStorage ), m_xOfficeInstDirs( xOfficeInstDirs ) { }

        //.................................................................
        void operator() ( TemplateContent& _rContent ) const
        {
            // store the info about this content
            util::DateTime aModDate;
            m_rStorage >> aModDate;
            _rContent.setModDate( aModDate );

            // store the info about the children
            // the number
            sal_Int32 nChildren = 0;
            m_rStorage >> nChildren;
            TemplateFolderContent& rChildren = _rContent.getSubContents();
            rChildren.resize( 0 );
            rChildren.reserve( nChildren );
            // initialize them with their (local) names
            while ( nChildren-- )
            {
                String sURL;
                m_rStorage.ReadByteString( sURL );
                sURL = m_xOfficeInstDirs->makeAbsoluteURL( sURL );
                INetURLObject aChildURL( sURL );
                rChildren.push_back( new TemplateContent( aChildURL ) );
            }

            // their content
            ::std::for_each(
                _rContent.getSubContents().begin(),
                _rContent.getSubContents().end(),
                *this
            );
        }

        //.................................................................
        void operator() ( const ::rtl::Reference< TemplateContent >& _rxContent ) const
        {
            if ( _rxContent.is() )
            {
                operator()( *_rxContent );
            }
        }
    };

    //=====================================================================
    //= TemplateFolderCacheImpl
    //=====================================================================
    class TemplateFolderCacheImpl
    {
    private:
        TemplateFolderContent           m_aPreviousState;   // the current state of the template dirs (as found on the HD)
        TemplateFolderContent           m_aCurrentState;    // the previous state of the template dirs (as found in the cache file)

        osl::Mutex                      m_aMutex;
        // will be lazy inited; never access directly; use getOfficeInstDirs().
        uno::Reference< util::XOfficeInstallationDirectories > m_xOfficeInstDirs;

        SvStream*                       m_pCacheStream;
        sal_Bool                        m_bNeedsUpdate : 1;
        sal_Bool                        m_bKnowState : 1;
        sal_Bool                        m_bValidCurrentState : 1;
        sal_Bool                        m_bAutoStoreState : 1;

    public:
        TemplateFolderCacheImpl( sal_Bool _bAutoStoreState );
        ~TemplateFolderCacheImpl( );

        sal_Bool    needsUpdate( sal_Bool _bForceCheck );
        void        storeState( sal_Bool _bForceRetrieval );

    private:
        sal_Bool    openCacheStream( sal_Bool _bForRead );
        void        closeCacheStream( );

        /// read the state of the dirs from the cache file
        sal_Bool    readPreviousState();
        /// read the current state of the dirs
        sal_Bool    readCurrentState();

        String      implParseSmart( const String& _rPath );

        sal_Bool    implReadFolder( const ::rtl::Reference< TemplateContent >& _rxRoot );

        static  String      getCacheFileName();
        static  sal_Int32   getMagicNumber();
        static  void        normalize( TemplateFolderContent& _rState );

        // @return <TRUE/> if the states equal
        static  sal_Bool    equalStates( const TemplateFolderContent& _rLHS, const TemplateFolderContent& _rRHS );

        // late initialize m_xOfficeInstDirs
        uno::Reference< util::XOfficeInstallationDirectories > getOfficeInstDirs();
    };

    //---------------------------------------------------------------------
    TemplateFolderCacheImpl::TemplateFolderCacheImpl( sal_Bool _bAutoStoreState )
        :m_pCacheStream         ( NULL )
        ,m_bNeedsUpdate         ( sal_True )
        ,m_bKnowState           ( sal_False )
        ,m_bValidCurrentState   ( sal_False )
        ,m_bAutoStoreState      ( _bAutoStoreState )
    {
    }

    //---------------------------------------------------------------------
    TemplateFolderCacheImpl::~TemplateFolderCacheImpl( )
    {
        // store the current state if possible and required
        if ( m_bValidCurrentState && m_bAutoStoreState )
            storeState( sal_False );

        closeCacheStream( );
    }

    //---------------------------------------------------------------------
    sal_Int32 TemplateFolderCacheImpl::getMagicNumber()
    {
        sal_Int32 nMagic = 0;
        ( nMagic += (sal_Int8)'T' ) <<= 4;
        ( nMagic += (sal_Int8)'D' ) <<= 4;
        ( nMagic += (sal_Int8)'S' ) <<= 4;
        ( nMagic += (sal_Int8)'C' ) <<= 0;
        return nMagic;
    }

    //---------------------------------------------------------------------
    String TemplateFolderCacheImpl::getCacheFileName()
    {
        return String::CreateFromAscii( ".templdir.cache" );
    }


    //---------------------------------------------------------------------
    void TemplateFolderCacheImpl::normalize( TemplateFolderContent& _rState )
    {
        SubContentSort()( _rState );
    }

    //---------------------------------------------------------------------
    sal_Bool TemplateFolderCacheImpl::equalStates( const TemplateFolderContent& _rLHS, const TemplateFolderContent& _rRHS )
    {
        if ( _rLHS.size() != _rRHS.size() )
            return sal_False;

        // as both arrays are sorted (by definition - this is a precondition of this method)
        // we can simply go from the front to the back and compare the single elements

        ::std::pair< ConstFolderIterator, ConstFolderIterator > aFirstDifferent = ::std::mismatch(
            _rLHS.begin(),
            _rLHS.end(),
            _rRHS.begin(),
            TemplateContentEqual()
        );

        return aFirstDifferent.first == _rLHS.end();
    }

    //---------------------------------------------------------------------
    void TemplateFolderCacheImpl::storeState( sal_Bool _bForceRetrieval )
    {
        if ( !m_bValidCurrentState || _bForceRetrieval )
            readCurrentState( );

        if ( m_bValidCurrentState && openCacheStream( sal_False ) )
        {
            *m_pCacheStream << getMagicNumber();

            // store the template root folders
            // the size
            *m_pCacheStream << (sal_Int32)m_aCurrentState.size();
            // the complete URLs
            ::std::for_each(
                m_aCurrentState.begin(),
                m_aCurrentState.end(),
                StoreContentURL( *m_pCacheStream, getOfficeInstDirs() )
            );

            // the contents
            ::std::for_each(
                m_aCurrentState.begin(),
                m_aCurrentState.end(),
                StoreFolderContent( *m_pCacheStream, getOfficeInstDirs() )
            );
        }
    }

    //---------------------------------------------------------------------
    String TemplateFolderCacheImpl::implParseSmart( const String& _rPath )
    {
        INetURLObject aParser;
        aParser.SetSmartProtocol( INET_PROT_FILE );
        aParser.SetURL( _rPath, INetURLObject::WAS_ENCODED );
        if ( INET_PROT_NOT_VALID == aParser.GetProtocol() )
        {
            String sURL;
            LocalFileHelper::ConvertPhysicalNameToURL( _rPath, sURL );
            aParser.SetURL( sURL, INetURLObject::WAS_ENCODED );
        }
        return aParser.GetMainURL( INetURLObject::DECODE_TO_IURI );
    }

    //---------------------------------------------------------------------
    void TemplateFolderCacheImpl::closeCacheStream( )
    {
        DELETEZ( m_pCacheStream );
    }

    //---------------------------------------------------------------------
    sal_Bool TemplateFolderCacheImpl::implReadFolder( const ::rtl::Reference< TemplateContent >& _rxRoot )
    {
        try
        {
            // create a content for the current folder root
            Reference< XResultSet > xResultSet;
            Sequence< ::rtl::OUString > aContentProperties( 4);
            aContentProperties[0] = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "Title" ));
            aContentProperties[1] = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "DateModified" ));
            aContentProperties[2] = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "DateCreated" ));
            aContentProperties[3] = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "IsFolder" ));

            // get the set of sub contents in the folder
            try
            {
                Reference< XDynamicResultSet > xDynResultSet;

                ::ucbhelper::Content aTemplateRoot( _rxRoot->getURL(), Reference< XCommandEnvironment >() );
                xDynResultSet = aTemplateRoot.createDynamicCursor( aContentProperties, ::ucbhelper::INCLUDE_FOLDERS_AND_DOCUMENTS );
                if ( xDynResultSet.is() )
                    xResultSet = xDynResultSet->getStaticResultSet();
            }
            catch( CommandAbortedException& )
            {
                DBG_ERRORFILE( "TemplateFolderCacheImpl::implReadFolder: caught a CommandAbortedException!" );
                return sal_False;
            }
            catch( ::com::sun::star::uno::Exception& )
            {
            }

            // collect the infos about the sub contents
            if ( xResultSet.is() )
            {
                Reference< XRow > xRow( xResultSet, UNO_QUERY_THROW );
                Reference< XContentAccess > xContentAccess( xResultSet, UNO_QUERY_THROW );

                while ( xResultSet->next() )
                {
                    INetURLObject aSubContentURL( xContentAccess->queryContentIdentifierString() );

                    // a new content instance
                    ::rtl::Reference< TemplateContent > xChild = new TemplateContent( aSubContentURL );

                    // the modified date
                    xChild->setModDate( xRow->getTimestamp( 2 ) );  // date modified
                    if ( xRow->wasNull() )
                        xChild->setModDate( xRow->getTimestamp( 3 ) );  // fallback: date created

                    // push back this content
                    _rxRoot->push_back( xChild );

                    // is it a folder?
                    if ( xRow->getBoolean( 4 ) && !xRow->wasNull() )
                    {   // yes -> step down
                                                ConstFolderIterator aNextLevelRoot = _rxRoot->end();
                        --aNextLevelRoot;
                        implReadFolder( *aNextLevelRoot );
                    }
                }
            }
        }
        catch( const Exception& )
        {
            OSL_FAIL( "TemplateFolderCacheImpl::implReadFolder: caught an exception!" );
            return sal_False;
        }
        return sal_True;
    }

    //---------------------------------------------------------------------
    sal_Bool TemplateFolderCacheImpl::readCurrentState()
    {
        // reset
        m_bValidCurrentState = sal_False;
        TemplateFolderContent aTemplateFolderContent;
        m_aCurrentState.swap( aTemplateFolderContent );

        // the template directories from the config
        const SvtPathOptions aPathOptions;
        String      aDirs = aPathOptions.GetTemplatePath();
        sal_uInt16  nDirs = aDirs.GetTokenCount( ';' );

        m_aCurrentState.reserve( nDirs );
        // loop through all the root-level template folders
        for ( sal_uInt16 i=0; i<nDirs; ++i)
        {
            String sTemplatePath( aDirs.GetToken( i, ';' ) );
            sTemplatePath = aPathOptions.ExpandMacros( sTemplatePath );
            // create a new entry
            m_aCurrentState.push_back( new TemplateContent( INetURLObject( sTemplatePath ) ) );
            TemplateFolderContent::iterator aCurrentRoot = m_aCurrentState.end();
            --aCurrentRoot;

            if ( !implReadFolder( *aCurrentRoot ) )
                return sal_False;
        }

        // normalize the array (which basically means "sort it")
        normalize( m_aCurrentState );

        m_bValidCurrentState = sal_True;
        return m_bValidCurrentState;
    }

    //---------------------------------------------------------------------
    sal_Bool TemplateFolderCacheImpl::readPreviousState()
    {
        DBG_ASSERT( m_pCacheStream, "TemplateFolderCacheImpl::readPreviousState: not to be called without stream!" );

        // reset
        TemplateFolderContent aTemplateFolderContent;
        m_aPreviousState.swap( aTemplateFolderContent );

        // check the magic number
        sal_Int32 nMagic = 0;
        *m_pCacheStream >> nMagic;
        DBG_ASSERT( getMagicNumber() == nMagic, "TemplateFolderCacheImpl::readPreviousState: invalid cache file!" );
        if ( getMagicNumber() != nMagic )
            return sal_False;

        // the root directories
        // their number
        sal_Int32 nRootDirectories = 0;
        *m_pCacheStream >> nRootDirectories;
        // init empty TemplateContens with the URLs
        m_aPreviousState.reserve( nRootDirectories );
        while ( nRootDirectories-- )
        {
            String sURL;
            m_pCacheStream->ReadByteString( sURL );
            // #116281# Keep office installtion relocatable. Never store
            // any direct references to office installation directory.
            sURL = getOfficeInstDirs()->makeAbsoluteURL( sURL );
            m_aPreviousState.push_back(
                new TemplateContent( INetURLObject(sURL) ) );
        }

        // read the contents of the root folders
        ::std::for_each(
            m_aPreviousState.begin(),
            m_aPreviousState.end(),
            ReadFolderContent( *m_pCacheStream, getOfficeInstDirs() )
        );

        DBG_ASSERT( !m_pCacheStream->GetErrorCode(), "TemplateFolderCacheImpl::readPreviousState: unknown error during reading the state cache!" );

        // normalize the array (which basically means "sort it")
        normalize( m_aPreviousState );

        return sal_True;
    }

    //---------------------------------------------------------------------
    sal_Bool TemplateFolderCacheImpl::openCacheStream( sal_Bool _bForRead )
    {
        // close any old stream instance
        closeCacheStream( );

        // get the storage directory
        String sStorageURL = implParseSmart( SvtPathOptions().GetStoragePath() );
        INetURLObject aStorageURL( sStorageURL );
        if ( INET_PROT_NOT_VALID == aStorageURL.GetProtocol() )
        {
            OSL_FAIL( "TemplateFolderCacheImpl::openCacheStream: invalid storage path!" );
            return sal_False;
        }

        // append our name
        aStorageURL.Append( getCacheFileName() );

        // open the stream
        m_pCacheStream = UcbStreamHelper::CreateStream( aStorageURL.GetMainURL( INetURLObject::DECODE_TO_IURI ),
            _bForRead ? STREAM_READ | STREAM_NOCREATE : STREAM_WRITE | STREAM_TRUNC );
        DBG_ASSERT( m_pCacheStream, "TemplateFolderCacheImpl::openCacheStream: could not open/create the cache stream!" );
        if ( m_pCacheStream && m_pCacheStream->GetErrorCode() )
        {
            DELETEZ( m_pCacheStream );
        }

        if ( m_pCacheStream )
            m_pCacheStream->SetStreamCharSet( RTL_TEXTENCODING_UTF8 );

        return NULL != m_pCacheStream;
    }

    //---------------------------------------------------------------------
    sal_Bool TemplateFolderCacheImpl::needsUpdate( sal_Bool _bForceCheck )
    {
        if ( m_bKnowState && !_bForceCheck )
            return m_bNeedsUpdate;

        m_bNeedsUpdate = sal_True;
        m_bKnowState = sal_True;

        if ( readCurrentState() )
        {
            // open the stream which contains the cached state of the directories
            if ( openCacheStream( sal_True ) )
            {   // opening the stream succeeded
                if ( readPreviousState() )
                {
                    m_bNeedsUpdate = !equalStates( m_aPreviousState, m_aCurrentState );
                }
                else
                {
                    closeCacheStream();
                }
            }
        }
        return m_bNeedsUpdate;
    }

    //---------------------------------------------------------------------
    uno::Reference< util::XOfficeInstallationDirectories >
    TemplateFolderCacheImpl::getOfficeInstDirs()
    {
        if ( !m_xOfficeInstDirs.is() )
        {
            osl::MutexGuard aGuard( m_aMutex );
            if ( !m_xOfficeInstDirs.is() )
            {
                // @@@ This is bad!
                uno::Reference< lang::XMultiServiceFactory > xSMgr
                    = comphelper::getProcessServiceFactory();
                OSL_ENSURE( xSMgr.is(), "No service manager!" );

                uno::Reference< beans::XPropertySet > xPropSet(
                    xSMgr, uno::UNO_QUERY );
                if ( xPropSet.is() )
                {
                    uno::Reference< uno::XComponentContext > xCtx;
                    xPropSet->getPropertyValue(
                        rtl::OUString(
                            RTL_CONSTASCII_USTRINGPARAM( "DefaultContext" ) ) )
                    >>= xCtx;

                    OSL_ENSURE( xCtx.is(),
                                "Unable to obtain component context from service manager!" );

                    if ( xCtx.is() )
                    {
                        xCtx->getValueByName(
                            rtl::OUString( RTL_CONSTASCII_USTRINGPARAM(
                                "/singletons/com.sun.star.util.theOfficeInstallationDirectories" ) ) )
                        >>= m_xOfficeInstDirs;
                    }

                    OSL_ENSURE( m_xOfficeInstDirs.is(),
                                "Unable to obtain office directories singleton!" );

                }
            }
        }
        return m_xOfficeInstDirs;
    }

    //=====================================================================
    //= TemplateFolderCache
    //=====================================================================
    //---------------------------------------------------------------------
    TemplateFolderCache::TemplateFolderCache( sal_Bool _bAutoStoreState )
        :m_pImpl( new TemplateFolderCacheImpl( _bAutoStoreState ) )
    {
    }

    //---------------------------------------------------------------------
    TemplateFolderCache::~TemplateFolderCache( )
    {
        DELETEZ( m_pImpl );
    }

    //---------------------------------------------------------------------
    sal_Bool TemplateFolderCache::needsUpdate( sal_Bool _bForceCheck )
    {
        return m_pImpl->needsUpdate( _bForceCheck );
    }

    //---------------------------------------------------------------------
    void TemplateFolderCache::storeState( sal_Bool _bForceRetrieval )
    {
        m_pImpl->storeState( _bForceRetrieval );
    }

//.........................................................................
}   // namespace sfx2
//.........................................................................

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */