255 lines
8 KiB
C++
255 lines
8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_SVTOOLS_SVPARSER_HXX
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#define INCLUDED_SVTOOLS_SVPARSER_HXX
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#include <svtools/svtdllapi.h>
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#include <tools/link.hxx>
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#include <tools/ref.hxx>
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#include <tools/solar.h>
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#include <rtl/textenc.h>
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#include <rtl/ustring.hxx>
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#include <vector>
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#include <memory>
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struct SvParser_Impl;
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class SvStream;
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enum SvParserState
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{
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SVPAR_ACCEPTED = 0,
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SVPAR_NOTSTARTED,
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SVPAR_WORKING,
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SVPAR_PENDING,
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SVPAR_WAITFORDATA,
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SVPAR_ERROR
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};
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class SVT_DLLPUBLIC SvParser : public SvRefBase
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{
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DECL_LINK_TYPED( NewDataRead, LinkParamNone*, void );
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protected:
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SvStream& rInput;
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OUString aToken; // scanned token
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sal_uLong nlLineNr; // current line number
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sal_uLong nlLinePos; // current column number
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std::unique_ptr<SvParser_Impl> pImplData; // internal data
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long nTokenValue; // additional value (RTF)
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bool bTokenHasValue; // indicates whether nTokenValue is valid
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SvParserState eState; // status also in derived classes
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rtl_TextEncoding eSrcEnc; // Source encoding
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sal_uLong nNextChPos;
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sal_uInt32 nNextCh; // current character codepoint in UTF32 for the "lex"
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bool bDownloadingFile : 1; // true: An external file is
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// currently being loaded, i.e.
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// all DataAvailable Links must
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// be ignored.
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// If none of the following
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// flags is set, the stream
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// is read as ANSI, but returned
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// as CharSet DONTKNOW.
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bool bUCS2BSrcEnc : 1; // or as big-endian UCS2
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bool bSwitchToUCS2 : 1; // switching is allowed
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bool bRTF_InTextRead : 1; // only for RTF-Parser!!!
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struct TokenStackType
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{
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OUString sToken;
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long nTokenValue;
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bool bTokenHasValue;
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int nTokenId;
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TokenStackType()
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: nTokenValue(0)
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, bTokenHasValue(false)
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, nTokenId(0)
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{
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}
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~TokenStackType() { }
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};
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// methods for Token stack
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int SkipToken( short nCnt = -1 ); // "skip" n Tokens back
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TokenStackType* GetStackPtr( short nCnt );
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// scan the next token:
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// work off Token stack and call GetNextToken_() if necessary.
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// That one is responsible for the recognition of new Tokens.
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int GetNextToken();
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virtual int GetNextToken_() = 0;
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// is called for each Token that is recognized in CallParser
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virtual void NextToken( int nToken );
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// at times of SvRefBase derivation, not everybody may delete
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virtual ~SvParser();
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void ClearTxtConvContext();
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private:
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TokenStackType* pTokenStack;
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TokenStackType *pTokenStackPos;
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sal_uInt8 nTokenStackSize, nTokenStackPos;
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public:
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SvParser( SvStream& rIn, sal_uInt8 nStackSize = 3 );
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virtual SvParserState CallParser() = 0; // calling of the parser
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inline SvParserState GetStatus() const { return eState; } // StatusInfo
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inline sal_uLong GetLineNr() const { return nlLineNr; }
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inline sal_uLong GetLinePos() const { return nlLinePos; }
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inline void IncLineNr() { ++nlLineNr; }
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inline sal_uLong IncLinePos() { return ++nlLinePos; }
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inline void SetLineNr( sal_uLong nlNum ); // inline bottom
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inline void SetLinePos( sal_uLong nlPos ); // inline bottom
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sal_uInt32 GetNextChar(); // Return next Unicode codepoint in UTF32.
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void RereadLookahead();
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inline bool IsParserWorking() const { return SVPAR_WORKING == eState; }
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Link<LinkParamNone*,void> GetAsynchCallLink() const
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{ return LINK( const_cast<SvParser*>(this), SvParser, NewDataRead ); }
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// for asynchronous reading from the SvStream
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void SaveState( int nToken );
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void RestoreState();
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virtual void Continue( int nToken );
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inline bool IsDownloadingFile() const { return bDownloadingFile; }
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// Set/get source encoding. The UCS2BEncoding flag is valid if source
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// encoding is UCS2. It specifies a big endian encoding.
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void SetSrcEncoding( rtl_TextEncoding eSrcEnc );
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rtl_TextEncoding GetSrcEncoding() const { return eSrcEnc; }
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// May the character set be switched to UCS/2, if a BOM
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// is in the first two characters of the stream?
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void SetSwitchToUCS2( bool bSet ) { bSwitchToUCS2 = bSet; }
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bool IsSwitchToUCS2() const { return bSwitchToUCS2; }
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// how many bytes a character consists of
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inline sal_uInt16 GetCharSize() const;
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int GetSaveToken() const;
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// build a Which-Map 'rWhichMap' from an array of WhichIds
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// 'pWhichIds'. It has the length 'nWhichIds'.
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// The WhichMap is not deleted.
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static void BuildWhichTable( std::vector<sal_uInt16> &rWhichMap,
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sal_uInt16 *pWhichIds,
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sal_uInt16 nWhichIds );
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};
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inline void SvParser::SetLineNr( sal_uLong nlNum )
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{ nlLineNr = nlNum; }
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inline void SvParser::SetLinePos( sal_uLong nlPos )
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{ nlLinePos = nlPos; }
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inline sal_uInt16 SvParser::GetCharSize() const
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{
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return (RTL_TEXTENCODING_UCS2 == eSrcEnc) ? 2 : 1;
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}
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/*========================================================================
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*
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* SvKeyValue.
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*
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*======================================================================*/
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class SvKeyValue
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{
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/** Representation.
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*/
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OUString m_aKey;
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OUString m_aValue;
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public:
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/** Construction.
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*/
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SvKeyValue()
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{}
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SvKeyValue (const OUString &rKey, const OUString &rValue)
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: m_aKey (rKey), m_aValue (rValue)
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{}
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SvKeyValue (const SvKeyValue &rOther)
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: m_aKey (rOther.m_aKey), m_aValue (rOther.m_aValue)
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{}
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/** Assignment.
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*/
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SvKeyValue& operator= (SvKeyValue &rOther)
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{
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m_aKey = rOther.m_aKey;
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m_aValue = rOther.m_aValue;
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return *this;
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}
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/** Operation.
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*/
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const OUString& GetKey() const { return m_aKey; }
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const OUString& GetValue() const { return m_aValue; }
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};
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/*========================================================================
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*
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* SvKeyValueIterator.
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*
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*======================================================================*/
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class SVT_DLLPUBLIC SvKeyValueIterator : public SvRefBase
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{
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struct Impl;
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std::unique_ptr<Impl> mpImpl;
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public:
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/** Construction/Destruction.
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*/
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SvKeyValueIterator();
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virtual ~SvKeyValueIterator();
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SvKeyValueIterator(const SvKeyValueIterator&) = delete;
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SvKeyValueIterator& operator=( const SvKeyValueIterator& ) = delete;
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/** Operation.
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*/
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virtual bool GetFirst (SvKeyValue &rKeyVal);
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virtual bool GetNext (SvKeyValue &rKeyVal);
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virtual void Append (const SvKeyValue &rKeyVal);
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};
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typedef tools::SvRef<SvKeyValueIterator> SvKeyValueIteratorRef;
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#endif // INCLUDED_SVTOOLS_SVPARSER_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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