1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ 2 /* 3 * This file is part of the LibreOffice project. 4 * 5 * This Source Code Form is subject to the terms of the Mozilla Public 6 * License, v. 2.0. If a copy of the MPL was not distributed with this 7 * file, You can obtain one at http://mozilla.org/MPL/2.0/. 8 * 9 * This file incorporates work covered by the following license notice: 10 * 11 * Licensed to the Apache Software Foundation (ASF) under one or more 12 * contributor license agreements. See the NOTICE file distributed 13 * with this work for additional information regarding copyright 14 * ownership. The ASF licenses this file to you under the Apache 15 * License, Version 2.0 (the "License"); you may not use this file 16 * except in compliance with the License. You may obtain a copy of 17 * the License at http://www.apache.org/licenses/LICENSE-2.0 . 18 */ 19 20 #ifndef INCLUDED_SOT_SOURCE_SDSTOR_STGDIR_HXX 21 #define INCLUDED_SOT_SOURCE_SDSTOR_STGDIR_HXX 22 23 #include "stgavl.hxx" 24 #include "stgelem.hxx" 25 #include "stgstrms.hxx" 26 27 class StgIo; 28 class StgDirStrm; 29 30 class BaseStorageStream; 31 class StgDirEntry : public StgAvlNode 32 { 33 friend class StgIterator; 34 friend class StgDirStrm; 35 StgEntry m_aSave; // original dir entry 36 StgDirEntry* m_pUp; // parent directory 37 StgDirEntry* m_pDown; // child directory for storages 38 StgStrm* m_pStgStrm; // storage stream 39 StgTmpStrm* m_pTmpStrm; // temporary stream 40 StgTmpStrm* m_pCurStrm; // temp stream after commit 41 sal_Int32 m_nEntry; // entry # in TOC stream (temp) 42 sal_Int32 m_nPos; // current position 43 bool m_bDirty; // dirty directory entry 44 bool m_bRemoved; // removed per Invalidate() 45 void InitMembers(); // ctor helper 46 virtual sal_Int32 Compare( const StgAvlNode* ) const override; 47 bool StoreStream( StgIo& ); // store the stream 48 bool StoreStreams( StgIo& ); // store all streams 49 void RevertAll(); // revert the whole tree 50 bool Strm2Tmp(); // copy stgstream to temp file 51 bool Tmp2Strm(); // copy temp file to stgstream 52 public: 53 StgEntry m_aEntry; // entry data 54 sal_Int32 m_nRefCnt; // reference count 55 StreamMode m_nMode; // open mode 56 bool m_bTemp; // true: delete on dir flush 57 bool m_bDirect; // true: direct mode 58 bool m_bZombie; // true: Removed From StgIo 59 bool m_bInvalid; // true: invalid entry 60 StgDirEntry(const void* pBuffer, sal_uInt32 nBufferLen, 61 sal_uInt64 nUnderlyingStreamSize, bool * pbOk); 62 explicit StgDirEntry( const StgEntry& ); 63 virtual ~StgDirEntry() override; 64 65 void Invalidate( bool ); // invalidate all open entries 66 void Enum( sal_Int32& ); // enumerate entries for iteration 67 void DelTemp( bool ); // delete temporary entries 68 bool Store( StgDirStrm& ); // save entry into dir strm 69 SetDirty()70 void SetDirty() { m_bDirty = true; } 71 bool IsDirty(); 72 73 bool Commit(); 74 75 void OpenStream( StgIo& ); // set up an appropriate stream 76 void Close(); 77 sal_Int32 GetSize() const; 78 bool SetSize( sal_Int32 ); 79 sal_Int32 Seek( sal_Int32 ); 80 sal_Int32 Read( void*, sal_Int32 ); 81 sal_Int32 Write( const void*, sal_Int32 ); 82 void Copy( BaseStorageStream& ); 83 }; 84 85 class StgDirStrm : public StgDataStrm 86 { 87 friend class StgIterator; 88 StgDirEntry* m_pRoot; // root of dir tree 89 void SetupEntry( sal_Int32, StgDirEntry* ); 90 public: 91 explicit StgDirStrm( StgIo& ); 92 virtual ~StgDirStrm() override; 93 virtual bool SetSize( sal_Int32 ) override; // change the size 94 bool Store(); 95 void* GetEntry( sal_Int32 n, bool );// get an entry GetRoot()96 StgDirEntry* GetRoot() { return m_pRoot; } 97 static StgDirEntry* Find( StgDirEntry&, const OUString& ); 98 StgDirEntry* Create( StgDirEntry&, const OUString&, StgEntryType ); 99 }; 100 101 class StgIterator : public StgAvlIterator 102 { 103 public: StgIterator(StgDirEntry & rStg)104 explicit StgIterator( StgDirEntry& rStg ) : StgAvlIterator( rStg.m_pDown ) {} First()105 StgDirEntry* First() { return static_cast<StgDirEntry*>( StgAvlIterator::First() ); } Next()106 StgDirEntry* Next() { return static_cast<StgDirEntry*>( StgAvlIterator::Next() ); } 107 }; 108 109 #endif 110 111 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ 112