1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #ifndef _CACHESTR_HXX 25 #define _CACHESTR_HXX 26 27 #include <tools/stream.hxx> 28 #include <tools/string.hxx> 29 #include <tools/link.hxx> 30 #include "tools/toolsdllapi.h" 31 32 // ----------------- 33 // - SvCacheStream - 34 // ----------------- 35 36 class TempFile; 37 class TOOLS_DLLPUBLIC SvCacheStream : public SvStream 38 { 39 private: 40 String aFileName; 41 sal_uIntPtr nMaxSize; 42 int bPersistent; 43 44 SvStream* pSwapStream; 45 SvStream* pCurrentStream; 46 TempFile* pTempFile; 47 48 Link aFilenameLinkHdl; 49 50 TOOLS_DLLPRIVATE virtual sal_uIntPtr GetData( void* pData, sal_uIntPtr nSize ); 51 TOOLS_DLLPRIVATE virtual sal_uIntPtr PutData( const void* pData, sal_uIntPtr nSize ); 52 TOOLS_DLLPRIVATE virtual sal_uIntPtr SeekPos( sal_uIntPtr nPos ); 53 TOOLS_DLLPRIVATE virtual void FlushData(); 54 TOOLS_DLLPRIVATE virtual void SetSize( sal_uIntPtr nSize ); 55 56 public: 57 SvCacheStream( sal_uIntPtr nMaxMemSize = 0 ); 58 SvCacheStream( const String &rFileName, 59 sal_uIntPtr nExpectedSize = 0, 60 sal_uIntPtr nMaxMemSize = 0 ); 61 ~SvCacheStream(); 62 63 void SetFilenameHdl( const Link& rLink); 64 const Link& GetFilenameHdl() const; SetFilename(const String & rFN)65 void SetFilename( const String& rFN ) 66 { aFileName = rFN; } // darf nur vom FilenameHdl gerufen werden! GetFilename() const67 const String& GetFilename() const { return aFileName; } 68 69 void SwapOut(); 70 const void* GetBuffer(); 71 sal_uIntPtr GetSize(); 72 IsPersistent()73 sal_Bool IsPersistent() { return bPersistent != 0; } SetPersistence(sal_Bool b=sal_True)74 void SetPersistence( sal_Bool b = sal_True ) { bPersistent = b; } SetSwapStream(SvStream * p)75 void SetSwapStream( SvStream *p ) 76 { pSwapStream = p; } // darf nur vom FilenameHdl gerufen werden! 77 }; 78 79 #endif 80