xmloff/inc/fasttokenhandler.hxx

   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
  10 #pragma once
  11
  12 #include <com/sun/star/xml/sax/XFastTokenHandler.hpp>
  13 #include <cppuhelper/implbase.hxx>
  14 #include <sax/fastattribs.hxx>
  15 #include <xmloff/token/tokens.hxx>
  16 #include <sal/log.hxx>
  17 #include <xmloff/dllapi.h>
  18
  19 namespace xmloff::token {
  20
  21 class TokenMap
  22 {
  23 public:
  24     explicit TokenMap();
  25             ~TokenMap();
  26
  27     /** Returns the UTF-8 name of the passed token identifier as byte sequence. */
  28     css::uno::Sequence< sal_Int8 > const & getUtf8TokenName( sal_Int32 nToken ) const
  29     {
  30         SAL_WARN_IF(nToken < 0 || nToken >= XML_TOKEN_COUNT, "xmloff", "Wrong nToken parameter");
  31         if( 0 <= nToken && nToken < XML_TOKEN_COUNT )
  32             return maTokenNamesUtf8[ nToken ];
  33         return EMPTY_BYTE_SEQ;
  34     }
  35
  36     const OUString& getTokenName( sal_Int32 nToken ) const
  37     {
  38         SAL_WARN_IF(nToken < 0 || nToken >= XML_TOKEN_COUNT, "xmloff", "Wrong nToken parameter");
  39         if( 0 <= nToken && nToken < XML_TOKEN_COUNT )
  40             return maTokenNames[ nToken ];
  41         return EMPTY_STRING;
  42     }
  43
  44     /** Returns the token identifier for the passed UTF-8 token name. */
  45     static sal_Int32 getTokenFromUtf8( const css::uno::Sequence< sal_Int8 >& rUtf8Name )
  46     {
  47         return getTokenFromUTF8( reinterpret_cast< const char* >(
  48                     rUtf8Name.getConstArray() ), rUtf8Name.getLength() );
  49     }
  50
  51     /** Returns the token identifier for a UTF-8 string */
  52     static sal_Int32 getTokenFromUTF8( const char *pToken, sal_Int32 nLength )
  53     {
  54         return getTokenPerfectHash( pToken, nLength );
  55     }
  56
  57 private:
  58     static sal_Int32 getTokenPerfectHash( const char *pToken, sal_Int32 nLength );
  59
  60     std::vector< css::uno::Sequence< sal_Int8 > > maTokenNamesUtf8;
  61     std::vector< OUString > maTokenNames;
  62
  63     static const css::uno::Sequence< sal_Int8 > EMPTY_BYTE_SEQ;
  64     static const OUString EMPTY_STRING;
  65 };
  66
  67 TokenMap& StaticTokenMap();
  68
  69 class FastTokenHandler final :
  70     public sax_fastparser::FastTokenHandlerBase
  71 {
  72 public:
  73     explicit FastTokenHandler();
  74     virtual ~FastTokenHandler() override;
  75
  76     // XFastTokenHandler
  77     virtual css::uno::Sequence< sal_Int8 > SAL_CALL getUTF8Identifier( sal_Int32 nToken ) override;
  78     virtual sal_Int32 SAL_CALL getTokenFromUTF8( const css::uno::Sequence< sal_Int8 >& Identifier ) override;
  79
  80     const OUString & getIdentifier( sal_Int32 nToken ) const;
  81
  82     // Much faster direct C++ shortcut to the method that matters
  83     virtual sal_Int32 getTokenDirect( const char *pToken, sal_Int32 nLength ) const override;
  84
  85 private:
  86     TokenMap& mrTokenMap;
  87 };
  88
  89 } // namespace xmloff::token
  90
  91 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */